Change search
Refine search result
12 51 - 76 of 76
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 51.
    Hällmark, Robert
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Jackson, Paul
    Ramböll (formerly Gifford), Southampton.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Post-installed shear connectors: coiled spring pins2016In: IABSE CONGRESS, STOCKHOLM, 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment / [ed] Lennart Elfgren, Johan Jonsson, Mats Karlsson, Lahja Rydberg-Forssbeck and Britt Sigfrid, CH - 8093 Zürich, Switzerland, 2016, p. 1227-1234Conference paper (Refereed)
    Abstract [en]

    Many existing bridges were not originally designed for the traffic loads and the number of load cycles which they now experience. In order to increase the load capacity of steel-concrete bridges, post installed shear connectors can be used. This paper presents a state-of the art study of postinstalled shear connectors in general and coiled spring connectors in particular

  • 52.
    Hällmark, Robert
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Jackson, Paul
    Ramboll, Ringwood Rd., Woodlands, Netley Marsh, Southampton, UK.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Ramboll, Ringwood Rd., Woodlands, Netley Marsh, Southampton, UK.
    White, Harry
    New York State Dept. of Transportation, Albany, NY.
    Strengthening Bridges with Postinstalled Coiled Spring Pin Shear Connectors: State-of-the-Art Review2019In: Practice Periodical on Structural Design and Construction, ISSN 1084-0680, E-ISSN 1943-5576, Vol. 24, no 1, article id 03118001Article in journal (Refereed)
    Abstract [en]

    Many existing bridge structures experience much more significant loads and load cycles than were anticipated when the bridges were originally designed. An effective way to increase the load capacity and fatigue resistance of steel girder with non-composite concrete deck bridge structures is to retrofit the structure with shear connectors to create a composite girder-deck structure. This paper presents a state-of the art study of post-installed shear connectors in general and coiled spring connectors in particular. The strengthening method is described together with experiences from real bridge strengthening projects, along with a study of load capacity and structural behavior.

  • 53.
    Hällmark, Robert
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    White, Harry
    New York State Department of Transportation, Albany, NY.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Prefabricated bridge construction across Europe and America2012In: Practice Periodical on Structural Design and Construction, ISSN 1084-0680, E-ISSN 1943-5576, Vol. 17, no 3, p. 82-92Article in journal (Refereed)
    Abstract [en]

    Determining the most efficient and economical way to build a new or replacement bridge is not as straightforward a process as it once was. The total cost of a bridge project is not limited to the amount spent on concrete, steel, and labor. Construction activities disrupt the typical flow of traffic around the project and results in additional costs to the public in the form of longer wait times, additional mileage traveled to get around the work zone, or business lost attributable to customers avoiding the construction. The risk of injury to workers because of traffic interactions or construction activities increase with each hour spent at the construction site. Finding a way to shorten the time spent on the jobsite is beneficial to the contractor, the owner, and the traveling public. Prefabricating certain bridge elements reduces the time spent at the construction site and reduces the effects on the road users and the surrounding community. For example, steel beams with composite concrete decks reduce the construction time over cast-in-place concrete superstructures. In some instances, entire structures have been fabricated off-site under strict environmental and quality controls and then shipped to the site and erected in a matter of days instead of months. The total cost of using prefabricated bridge elements (PBE) depends greatly on the scale of the prefabrication. The more that prefabrication is used, the lower the costs. Even under limited use, however, prefabrication is usually comparable to traditional construction techniques. However, when durability and user costs are taken into account, the overall cost may be significantly less than traditional pieceby-piece construction. To improve the competitiveness of prefabricated composite bridges, a European research and development project, ELEM RFSR-CT-2008-00039, was started in 2008. The overall objective of the project is to make prefabricated bridges more competitive through development of new cost-effective, time-efficient, and sustainable bridge structures. The project has started with a knowledge extension, in the form of the workshop on “Composite Bridges with Prefabricated Deck Elements.” This workshop was held in Stockholm, Sweden, in March 2009 to share the knowledge and experience gained by agencies around the globe. During the workshop, experiences from Europe and the United States were presented in an effort to promote the use of accelerated bridge construction (ABC) and prefabricated bridge elements.

  • 54. Johansson, Bernt
    et al.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Betola samverkansbjälklag: rapport december 19871987Report (Other academic)
  • 55. Johansson, Bernt
    et al.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    High strength steel - the construction material of the future1999In: Steel and composite structures: international conference, 24 and 25 February 1999, Delft, The Netherlands : proceedings / [ed] J. W. P. M. Brekelmans; A W Tomà, Rijswijk: TNO Building and Construction Research , 1999, p. 11.1-11.14Conference paper (Refereed)
  • 56.
    Lundmark, Tore
    et al.
    Ramböll, Luleå.
    Hällmark, Robert
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Dahlman, Lars
    Trafikverket, Eskilstuna.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Upgrading of an old railway bridge: the Old Årsta Bridge2016In: IABSE CONGRESS, STOCKHOLM, 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment / [ed] Lennart Elfgren, Johan Jonsson, Mats Karlsson, Lahja Rydberg-Forssbeck and Britt Sigfrid, CH - 8093 Zürich, Switzerland, 2016, p. 624-631Conference paper (Refereed)
    Abstract [en]

    The old Årsta Bridge, a double track railway bridge with a main span carried by a truss arch, was opened in 1929. Due to high fatigue loading and the low ductility of the rail girders and the cross girders, it was decided to replace the bridge deck in year 2015. This paper describes the project from the design stage to the reopening of the upgraded bridge.

  • 57.
    Möller, Mikael
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Johansson, Bernt
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    New analytical model of inelastic local flange buckling1997In: Journal of constructional steel research, ISSN 0143-974X, E-ISSN 1873-5983, Vol. 43, no 1-3, p. 43-63Article in journal (Refereed)
    Abstract [en]

    This paper deals with analytical modelling of inelastic local flange buckling of compressed I-beam flanges. A short discussion of the relevance of different constitutive models for the inelastic material behaviour is carried out. It is claimed that what is known as the `plastic buckling paradox' is not at all a paradox but a result of improper use of plasticity theory. An analytical model for the inelastic local buckling of an I-beam flange is proposed. The model considers the buckling process as being composed of two pans. The first is associated with inelastic torsional buckling of a compressed flange and the second part corresponds to a yield line plate buckling configuration which includes the effect of stress redistribution due to large deformations. The transition between these phases is left out in the model. The model is capable of predicting approximately the force-deformation relation of a locally buckling stocky flange for different stress-strain relations. The model is evaluated against experiments and the agreement is found quite reasonable.

  • 58. Nilsson, Martin
    et al.
    Husson, Wylliam
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Veljkovic, Milan
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Petursson, Hans
    Monitoring of a bridge with integral abutment2007In: Improving Infrastructure Worldwide: IABSE symposium, Weimar 2007, [September 19 - 21, 2007] ; report / [ed] Ulrike Kuhlmann, Zürich: International Association for Bridge and Structural Engineering, 2007Conference paper (Refereed)
    Abstract [en]

    Preliminary results obtained from short term test-loading are used to illustrate possibilities of FEM used to calibrate complex interaction characteristics between a pile and soil in a bridge with integral abutments. The measurements are obtained during the winter season on the bridge over Ledån, Northern Sweden. The bridge is built in 2006 and used for long term monitoring within the international project supported by RFCS. The main objective of the on-going research project is to proposed recommendations for rational analysis and design of bridges with integral abutments.

  • 59.
    Nilsson, Mattias
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Eriksson, Kjell
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
    James, Gerard
    Projektengagemang i Stockholm AB.
    The instrumentation and monitoring of the Vårby Bridge2010In: Large structures and infrastructures for environmentally constrained and urbanised areas: IABSE symposium, Venice 2010 ; [34th International Symposium on Bridge and Structural Engineering, Venice, Italy, September 22 - 24, 2010] / [ed] Anton Steffen, International Association for Bridge and Structural Engineering, 2010Conference paper (Refereed)
    Abstract [en]

    Numerous cracks have been discovered in the Vårby Bridge near Stockholm, Sweden. All cracks are found at the junctions between cross girders and the main girders, more specifically, at the welds connecting the vertical web stiffeners to the top flanges of the main girders. In order to identify the reason for the observed cracks, an ongoing investigation under the commision of the bridge owner was started in the spring of 2009. One conclusions so far is that the observed cracks are to 100 % certainty a result of fatigue.FEM-modeling is currently going on as a part of a master thesis. As the fatigue process is distortional the propagation phase of the observed cracks might slow down or even stop. One task will thus be to determine the stress intensity factor versus crack length relationship in order to model a growing crack. Suggestions of possible of methods of refurbishment, based upon the results, will then be presented to the bridge owner.

  • 60.
    Nilsson, Mattias
    et al.
    Ramböll Sverige, Ramböll Sverige AB, Luleå.
    Eriksson, Kjell
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
    James, Gerard
    Royal Institute of Technology, Projektengagemang i Stockholm AB.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    The Instrumentation and monitoring of the Varby Bridge2010In: Large structures and infrastructures for environmentally constrained and urbanised areas: IABSE symposium, Venice 2010 ; [34th International Symposium on Bridge and Structural Engineering, Venice, Italy, September 22 - 24, 2010] / [ed] Anton Steffen, Zürich: International Association for Bridge and Structural Engineering, 2010, p. 300-301Conference paper (Refereed)
    Abstract [en]

    Numerous cracks have been discovered in the Varby Bridge near Stockholm, Sweden. All cracks are found at the junctions between the cross girders and the main girders, more specifically, at the welds connecting the vertical web stiffeners to the top flanges of the main girders. The cracks might possibly be causing serious problems if they are allowed to propagate through the entire length of the weld, thereby permitting out-of-plane bending of the main girder web. In order to identify the reason for the observed cracks, an ongoing investigation under the commision of the bridge owner was started in the spring of 2009. One conclusion so far, is that the observed cracks conclusively are a result of fatigue As a part of a master thesis, FEM-modelling is currently under way. As the fatigue process is distortional, the propagation phase of the observed cracks might slow down or even stop. One task will be to determine the stress intensity factor versus crack length relationship in order to model a growing crack. The final chosen method of refurbishment will be based upon the results of the study and will be implemented in cooperation with the bridge owner

  • 61.
    Nilsson, Mattias
    et al.
    Ramböll Sverige.
    Eriksson, Kjell
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
    James, Gerard
    Projektengagemang AB.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    The Instrumentation and monitoring of the Vårby Bridge2011In: International Workshop Strengthening of Steel Bridges: Topics of relevance for the BRIFAG project / [ed] Peter Collin; Mattias Nilsson; Milan Veljkovic, Luleå: Luleå tekniska universitet, 2011Conference paper (Refereed)
  • 62.
    Pipinato, Alessio
    et al.
    AP& P srl, Rovigo, Italy.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Hällmark, Robert
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Prolonging the Lifetime of Old Steel and Steel–Concrete Bridges: Assessment Procedures and Retrofitting Interventions2019In: Structural Engineering International, ISSN 1016-8664, E-ISSN 1683-0350, Vol. 29, no 4Article in journal (Refereed)
    Abstract [en]

    The structural analysis of existing bridges is not widely covered by the various codes and standards, resulting in the insecure and, in some cases, critical condition of this type of structure. Regarding national regulation, few states include compulsory codes that define the methods and procedures of inspection, assessment, maintenance and retrofitting of bridges. Although an accurate retrofitting procedure can prolong the life of an existing bridge, the more accurate management of national infrastructure assets can result in financial savings in the long term. This article deals with: (a) the assessment step-level procedure, (b) suggestions for bridge load tests and bridge categories, (c) bridge material analysis, (d) structural testing analysis, and (e) the main retrofitting interventions to prolong the life of existing steel and steel composite bridges. Furthermore, a representative case study is analysed and discussed, including examples of the retrofitting solutions implemented to prolong the service life of the bridge.

  • 63.
    Pétursson, Hans
    Ramböll Sverige AB, Luleå.
    Veljkovic, Milan (Editor)
    International workshop on the bridges with integral abutments: topics of relevance for the INTAB project2006Report (Other academic)
    Abstract [en]

    Since mid 2005 a European R&D project, INTAB (Economic and Durable Design of Composite Bridges with Integral Abutments), is running with support from RFCS, RFSR-CT-2005-00041, and national sponsors. The project concerns bridges with integral abutments, a concept saving investment as well as maintenance costs. The project includes international comparisons, theoretical studies, in situ and laboratory testing of bridges and the preparing of guidelines for design of such bridges. A bridge for monitoring was constructed in mid Sweden in the summer of 2006. In May 2006 an international workshop with participants from eight countries was held at Ramböll’s Swedish head office in Stockholm. The report consists of contributions from the leading structural engineers from these countries and addresses problems relevant for the INTAB project.

  • 64.
    Pétursson, Hans
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Composite bridges with integral abutments minimizing lifetime cost2002In: IABSE symposium Melbourne 2002: towards a better built environment - innovation, sustainability, information technology; Melbourne, Australia 11 - 13 September, 2002, Zürich: International Association for Bridge and Structural Engineering, 2002Conference paper (Refereed)
    Abstract [en]

    The cost of maintenance is an ever- growing problem for road administrations around the world, and bridges are no exception to the rule. One way to reduce the need for future maintenance, as well as the investment cost, is to make bridges without transition joints. In order to investigate if the crossshaped steel pile commonly used in Sweden is suitable for use in integral abutments, two full-scale laboratory tests were carried out. Experience from the United States shows that bridges with integral abutments are increasingly outclassing the traditional bridges with joints, the former being not only less expensive to maintain, but also more affordable to build. In the following, two analytical methods are described that can be used to calculate the capacity of piles based on plastic design.

  • 65.
    Pétursson, Hans
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Innovative Solutions for Integral Abutments2006In: International workshop on the bridges with integral abutments: topics of relevance for the INTAB project, Luleå: Luleå tekniska universitet, 2006, p. 65-76Chapter in book (Other academic)
    Abstract [en]

    The cost of maintenance is an ever-growing problem for road administrations around the world, and bridges are no exception to the rule. One way to reduce the need for future maintenance, as well as the investment cost, is to make bridges without transition joints. In order to investigate if the cross-shaped steel pile commonly used in Sweden is suitable for use in integral abutments, two full-scale laboratory tests were carried out. Experience from the United States shows that bridges with integrated abutments are increasingly outclassing the traditional bridges with joints, the former being not only less expensive to maintain, but also more affordable to build. In the following, two analytical methods are described that can be used to calculate the capacity of piles based on plastic design.

  • 66.
    Pétursson, Hans
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Andersson, Jörgen
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Veljkovic, Milan
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Monitoring of a swedish integral abutment bridge2011In: Structural Engineering International, ISSN 1016-8664, E-ISSN 1683-0350, Vol. 21, no 2, p. 175-180Article in journal (Refereed)
    Abstract [en]

    One of the most commonly discussed problems regarding bridges with integral abutments is the influence of longitudinal elongation of the superstructure as a result of seasonal temperature variations. A bridge built with integral abutments is often supported by a row of piles made of steel or concrete. The longitudinal elongation of the superstructure induces a displacement and a rotation at the top of the pile, which in turn may cause strains that exceeds the yield strain. Such seasonal variations may lead to low-cyclic fatigue failure in the pile. Therefore, it is of great interest to investigate the amplitude of these strains, as well as the general behaviour of the bridge. In 2005, the European R&D project, INTAB (RFSR-CT-2005-00041, "Economic and Durable Design of Bridges with Integral Abutments, 2005-2008") was started. Within the INTAB project a composite bridge was built and monitored in Northern Sweden.

  • 67.
    Pétursson, Hans
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Eriksson, Kjell
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Low-cycle fatigue of steel piles2010In: Large structures and infrastructures for environmentally constrained and urbanised areas: IABSE symposium, Venice 2010 ; [34th International Symposium on Bridge and Structural Engineering, Venice, Italy, September 22 - 24, 2010] / [ed] Anton Steffen, Zürich: International Association for Bridge and Structural Engineering, 2010Conference paper (Refereed)
  • 68.
    Pétursson, Hans
    et al.
    Swedish Transport Administration, Borlänge.
    Eriksson, Kjell
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Low-cycle fatigue strength of steel piles2010In: Large structures and infrastructures for environmentally constrained and urbanised areas: IABSE symposium, Venice 2010 ; [34th International Symposium on Bridge and Structural Engineering, Venice, Italy, September 22 - 24, 2010] / [ed] Anton Steffen, Zürich: International Association for Bridge and Structural Engineering, 2010, p. 628-629Conference paper (Refereed)
    Abstract [en]

    In integral abutment bridges clamped abutment piles are in addition to a compressive normal force subjected to bending load cycles from daily and yearly temperature variations. Through experiments with full-scale specimens representing a clamped pile it is shown that a steel pipe pile loaded in bending can withstand several hundred load cycles at strain ranges greater than 6 times the yield strain with almost full load bearing capacity. By means of an example it is shown that by permitting pile strains greater than the yield strain, in contrast to most present design codes, integral abutment bridges can be erected with a span length up to 500m and a prospected service life of 120 years.

  • 69.
    Pétursson, Hans
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Möller, Mikael
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Low-cycle fatigue strength of steel piles under bending2013In: Structural Engineering International, ISSN 1016-8664, E-ISSN 1683-0350, Vol. 23, no 3, p. 278-284Article in journal (Refereed)
    Abstract [en]

    Clamped abutment piles for integral abutment bridges experience both a compressive normal force and bending load cycles stemming from daily and yearly temperature variations. This paper describes experiments using full-scale models of clamped piles to demonstrate that a steel pipe pile can accommodate large inelastic deformations under strains six times greater than the yield strain for several hundred load cycles. This indicates that by permitting pile strains in excess of the yield strain (which is not permissible under most current design codes), integral abutment bridges could be erected with spans of up to 500 m and a projected service life of 120 years. The tests were carried out as a step towards the development of design rules for determining the capacity of piles for integral abutment bridges.

  • 70.
    Sedlacek, Gerhard
    et al.
    RWTH Aachen.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Composite bridge design for small and medium spans2003Report (Refereed)
  • 71.
    Stoltz, Anders
    et al.
    Luleå tekniska universitet.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Johansson, Bernt
    Bridge deck elements with dry joints2001In: NSCC 2001 Proceedings: Helsinki, Finland, 18 - 20 June 2001 / [organized by Helsinki University of Technology ...] / [ed] P. Mäkeläinen; J. Kesti; A. Jutila; O. Kaitila, Helsinki: Helsinki University of Technology , 2001Conference paper (Refereed)
  • 72.
    Varedian, Mattias
    et al.
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Eriksson, Kjell
    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
    A new improved type of friction connection: An experimental study2017In: IABSE Conference, Vancouver 2017: Engineering the Future, Zürich, Switzerland: IABSE -International Association for Bridges and Structural Engineering , 2017, p. 214-221Conference paper (Refereed)
    Abstract [en]

    Indenters in the slip planes of a bolted lap joint increase its load bearing capacity. In an experimental study, conducted at the Luleå University of Technology, Sweden, a part of the European R&D project PROLIFE, RFCS 2015-00025, indenters between two plates a) were loaded in compression and b) shear loaded in a lap joint. The load to press a 2.5 mm diameter stainless steel indenter 2.3 mm into the plates was 11 kN and the effective friction of the joint was improved. In a reference test with two shear planes and plain as rolled plates, no indenters and an M30 bolt pre-loaded to 320 kN, the joint slip resistance force was 54.5 kN and the effective friction coefficient μeff=0.09. For an identical arrangement but with 29 indenters per shear plane, the slip resistance was close to 250 kN and μeff was increased to 0.40, at the current Eurocode acceptable joint slip of 0.15 mm.

  • 73.
    Vestman, Victor
    et al.
    Ramböll, Luleå.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Häggström, Jens
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
    Improvement of fatigue resistance through box-action for I-girder composite bridges2016In: IABSE CONGRESS, STOCKHOLM, 2016: Challenges in Design and Construction of an Innovativeand Sustainable Built Environment / [ed] ennart Elfgren, Johan Jonsson, Mats Karlsson, Lahja Rydberg-Forssbeck and Britt Sigfrid, CH - 8093 Zürich, Switzerland, 2016, p. 1988-1994Conference paper (Refereed)
    Abstract [en]

    When strengthening existing I-girder composite bridges one idea is to make the cross section act like a box section, by adding a horizontal truss between the bottom flanges. This means that eccentric loads produce a torque that is transferred by shear forces around the section. The magnitude of the effects coming from introducing such a framework between girders is addressed in this article. The fatigue resistance will be improved by the reduced stress ranges and increased amount of tolerated load cycles and extend the lifetime of the details, and by so the lifetime for the bridge.

  • 74.
    White, Harry
    et al.
    New York State Department of Transportation, Albany, NY.
    Pétursson, Hans
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Collin, Peter
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Integral abutment bridges: the European way2010In: Practice Periodical on Structural Design and Construction, ISSN 1084-0680, E-ISSN 1943-5576, Vol. 15, no 3, p. 201-208Article in journal (Refereed)
    Abstract [en]

    Integral abutment bridges are becoming more popular in Europe, but the traditions differ from country to country. This leads to different technical solutions for the same problem in each country. A European survey was conducted in early 2007 to illustrate the design criteria used by each different country for integral abutment bridges. The survey requested information useful to a designer comparing the design requirements and restrictions of various European countries. As an added measure of comparison, these results were compared to some recently conducted surveys of state agencies within the United States. When looking at the results of the European survey responses and past surveys of U.S. transportation agencies, it is clear that there are many similarities in design assumptions and construction practices. Yet, there are also significant differences.

  • 75. Collin, Peter (Editor)
    Hällmark, Robert (Editor)
    Nilsson, Martin (Editor)
    International workshop on prefabricated composite bridges2009Report (Other academic)
  • 76. Collin, Peter (Editor)
    Nilsson, Mattias (Editor)
    Veljkovic, Milan (Editor)
    International Workshop Strengthening of Steel Bridges: Topics of relevance for the BRIFAG project2011Report (Other academic)
12 51 - 76 of 76
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf