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Heistermann, Christine
Publikasjoner (10 av 17) Visa alla publikasjoner
Pavlovic, M., Heistermann, C., Veljkovic, M., Pak, D., Feldmann, M., Rebelo, C. & Silva, L. S. (2015). Connections in towers for wind converters: part I: Evaluation of down-scaled experiments (ed.). Journal of constructional steel research, 115, 445-457
Åpne denne publikasjonen i ny fane eller vindu >>Connections in towers for wind converters: part I: Evaluation of down-scaled experiments
Vise andre…
2015 (engelsk)Inngår i: Journal of constructional steel research, ISSN 0143-974X, E-ISSN 1873-5983, Vol. 115, s. 445-457Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The cost of a tubular steel tower supporting a wind converter becomes increasingly important in a competitive energy market. In-situ connection between tower segments is an important factor of the design. The tower segments are usually connected by welded ring flanges. An alternative solution based on a novel single lap friction connection is analysed. The purpose of the research presented in this paper is to thoroughly analyse the behaviour of both connections by an experimental testing programme and advanced finite element analysis (FEA). Down-scaled experiments of ring flange and friction connection in circular towers were performed using a 4-point bending test set-up. Altogether eight connections joining cylindrical shell, 1 m diameter, plate thickness 8 mm and total span of about 7 m were tested. A friction connection with long open slotted holes and two different cases of the ring flange connection are considered: with perfectly flat flanges and flanges with geometric imperfection. Results of advanced quasi-static FEA, using explicit dynamic solver and ductile damage material model for bolts, are compared to experiments. Failure modes, bolt forces and distribution of meridional membrane stresses in the shell in the vicinity of connections are analysed. Existing hand-calculation models, for the bolt force and normal stress distribution in the shell are validated by experiments and FEA.

HSV kategori
Forskningsprogram
Stålbyggnad; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
urn:nbn:se:ltu:diva-2614 (URN)10.1016/j.jcsr.2015.09.002 (DOI)000364617800035 ()2-s2.0-84944159014 (Scopus ID)04086828-6636-41e8-9ce9-6e0443483b5f (Lokal ID)04086828-6636-41e8-9ce9-6e0443483b5f (Arkivnummer)04086828-6636-41e8-9ce9-6e0443483b5f (OAI)
Merknad

Validerad; 2015; Nivå 2; 20151001 (andbra)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2019-03-29bibliografisk kontrollert
Pavlovic, M., Heistermann, C., Veljkovic, M., Pak, D., Feldmann, M., Rebelo, C. & Silva, L. S. (2015). Connections in towers for wind converters: Part II: The friction connection behaviour (ed.). Journal of constructional steel research, 115, 458-466
Åpne denne publikasjonen i ny fane eller vindu >>Connections in towers for wind converters: Part II: The friction connection behaviour
Vise andre…
2015 (engelsk)Inngår i: Journal of constructional steel research, ISSN 0143-974X, E-ISSN 1873-5983, Vol. 115, s. 458-466Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A novel friction connection consisting of a single lap joint with long open slotted holes is proposed for use in tubular towers for wind converters for in-situ connections. This is a competitive alternative to the common ring flange connection as it has been shown in the European Project “HISTWIN”. Two sets of experiments are analysed: the down-scaled tubular steel tower 4-point bending experiments using high-strength bolts M20 and a single lap joint using plate thickness 25 mm and tension control bolts M30.The main motivation for this paper is a much higher bending resistance obtained in the 4-point bending experiments compared to predictions based on hand-calculation models.Results of experiments are used to validate finite element analysis (FEA). Explicit solver and the most realistic geometry of the bolts are the main characteristics of the FEA performed. Very good agreement between the experiments and FEA results is obtained, which provides credibility of the computational approach used to thoroughly examine experimental results. New evidences of the friction connection behaviour are provided: a short-term loss of preloading force due to external loading, transfer of shear force in the single lap joint and influence of the slotted hole on the joint resistance.Results obtained from hand-calculation models are used to predict the loss of preloading, the bending resistance of the connection and meridional stresses in the tower shell in the vicinity of the connection, which are compared to the experiments and the FEA. Recommendations related to use of the hand-calculation models in the design are provided.

HSV kategori
Forskningsprogram
Stålbyggnad; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
urn:nbn:se:ltu:diva-3406 (URN)10.1016/j.jcsr.2015.05.009 (DOI)000364617800036 ()2-s2.0-84944173402 (Scopus ID)13c5a8c0-2e25-488f-bd8a-a9c65a4fe54c (Lokal ID)13c5a8c0-2e25-488f-bd8a-a9c65a4fe54c (Arkivnummer)13c5a8c0-2e25-488f-bd8a-a9c65a4fe54c (OAI)
Merknad

Validerad; 2015; Nivå 2; 20140822 (chrott)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2019-03-29bibliografisk kontrollert
Pavlovic, M., Heistermann, C., Veljkovic, M., Pak, D., Feldmann, M., Rebelo, C. & Silva, L. S. (2015). Friction connection vs. ring flange connection in steel towers for wind converters (ed.). Engineering structures, 98, 151-162
Åpne denne publikasjonen i ny fane eller vindu >>Friction connection vs. ring flange connection in steel towers for wind converters
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2015 (engelsk)Inngår i: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 98, s. 151-162Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Tubular steel towers are the most commonly used structures to support wind converters. Towers are fabricated in welded segments, complying with the traffic requirements for transportation, and in-situ assembled. Ring flange connections are used to connect two segments. Fatigue endurance of the ring flange to the shell weld, class 71, is often the design criterion and imposes a limit on the shell thickness. Recently studied friction connections with long opened slotted holes, in HISTWIN and HISTWIN2 projects, provides a remedy for this limitation. The main purpose of this paper is to compare performance of the ring flange connection and the novel friction considering connection of a real tubular tower segment 3.37 m in diameter and 24 mm shell thickness. This cross-section is designed for the ultimate load MEd = 45.8 MNm and the steel grade S355. Finite Element Method is used to investigate possible failure modes of the connection. Advanced FEA comprise the realistic geometry of the connection, ductile damage material model and element removal using explicit dynamic solver. This allows sophisticated analysis of the behaviour and direct comparison of the results for both connection alternatives. The FEA is validated by down-scaled experiments performed previously within the HISTWIN project. The friction connection is thoroughly examined: geometry of the connection, influence of the shell imperfection in the vicinity of the connection and possible use of higher resistance steel grades. By focusing on key issues of the friction connection recommendations for the design are provided together with a numerical example

HSV kategori
Forskningsprogram
Stålbyggnad; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
urn:nbn:se:ltu:diva-4109 (URN)10.1016/j.engstruct.2015.04.026 (DOI)000357351000014 ()2-s2.0-84929462310 (Scopus ID)1fb8c65b-15c7-4602-86b4-dfcb0a93b85a (Lokal ID)1fb8c65b-15c7-4602-86b4-dfcb0a93b85a (Arkivnummer)1fb8c65b-15c7-4602-86b4-dfcb0a93b85a (OAI)
Merknad

Validerad; 2015; Nivå 2; 20140826 (chrott)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2019-03-29bibliografisk kontrollert
Andrade, P., Pavlovic, M., Heistermann, C., Veljkovic, M. & Heistermann, T. (2015). Structural Behaviour of a Novel Column-Splice Joint: Finger Connection (ed.). In: (Ed.), Markku Heinisuo; Jari Mäkinen (Ed.), The 13th Nordic Steel Construction Conference: NSCC-2015. Paper presented at Nordic Steel Construction Conference : 23/09/2015 - 25/09/2015 (pp. 215-216). Tampere: Tampere University of Technology, Department of Civil Engineering
Åpne denne publikasjonen i ny fane eller vindu >>Structural Behaviour of a Novel Column-Splice Joint: Finger Connection
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2015 (engelsk)Inngår i: The 13th Nordic Steel Construction Conference: NSCC-2015 / [ed] Markku Heinisuo; Jari Mäkinen, Tampere: Tampere University of Technology, Department of Civil Engineering , 2015, s. 215-216Konferansepaper, Meeting abstract (Fagfellevurdert)
Abstract [en]

The novel joint presented in this paper is a friction connection used for column-splice connections of modular buildings as part of the innovative construction method introduced in the research project Optimization of frames for effective assembling - FRAMEUP. This type of joint provides a quick assembly and can deal with misalignments by introducing a connection gap. A filler and finger plate are welded to the upper part of the column to this end.The gap between finger plates and lower column faces is closed during tightening of the bolts and, thus, establishes a slip-resistant connection. The efficiency of the joint resistance based on different connection gaps subjected to uniform compression is assessed.The column-splice is composed of four slip-resistant connections, one at each side of the tube. Each finger plate consists of three long slotted holes and is welded to the upper column face. Long slotted holes are used to accommodate vertical misalignments and, therefore, allow fitting the bolts which are pre-installed in the lower column. Filler plates with different thicknesses (4, 6 and 8 mm) welded between the finger plate and upper column face are used to create a connection gap which allows balancing horizontal misalignments. The lower column faces consist of each nine holes with no clearance in order to pre-fit the bolts in a workshop. Thus, the assembling process on the construction site can be speeded up as once the lowercolumns are in place all bolts can be tightened immediately.

sted, utgiver, år, opplag, sider
Tampere: Tampere University of Technology, Department of Civil Engineering, 2015
Emneord
Finger Connection, slip-resistance connection, Engineering mechanics - Construction engineering, Teknisk mekanik - Konstruktionsteknik
HSV kategori
Forskningsprogram
Stålbyggnad
Identifikatorer
urn:nbn:se:ltu:diva-27929 (URN)18593bf7-99f9-402f-8911-3223b1dccbf3 (Lokal ID)978-952-15-3578-9 (ISBN)978-952-15-3579-6 (ISBN)18593bf7-99f9-402f-8911-3223b1dccbf3 (Arkivnummer)18593bf7-99f9-402f-8911-3223b1dccbf3 (OAI)
Konferanse
Nordic Steel Construction Conference : 23/09/2015 - 25/09/2015
Prosjekter
FRAMEUP - Optimization of frames for effective assembling
Merknad
Godkänd; 2015; 20151007 (pedand)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-06-08bibliografisk kontrollert
Heistermann, C., Pavlovic, M., Andrade, P., Veljkovic, M., Rebelo, C. & Silva, L. S. (2014). Finite Element Analysis of Lap Joints in Steel Tubular Towers (ed.). In: (Ed.), Raffaele Landolfo; Frederico M. Mazzolani (Ed.), Eurosteel 2014: 7th European Conference on Steel and Composite Structures. Paper presented at European Conference on Steel and Composite Structures : 10/09/2014 - 12/09/2014 (pp. 291-292). Brussels, Belgium: European Convention for Constructional Steelwork, ECCS
Åpne denne publikasjonen i ny fane eller vindu >>Finite Element Analysis of Lap Joints in Steel Tubular Towers
Vise andre…
2014 (engelsk)Inngår i: Eurosteel 2014: 7th European Conference on Steel and Composite Structures / [ed] Raffaele Landolfo; Frederico M. Mazzolani, Brussels, Belgium: European Convention for Constructional Steelwork, ECCS , 2014, s. 291-292Konferansepaper, Meeting abstract (Fagfellevurdert)
sted, utgiver, år, opplag, sider
Brussels, Belgium: European Convention for Constructional Steelwork, ECCS, 2014
Emneord
Friction connection, Finite element analysis, Loss of pretension, Long open slotted hole, Finger plate buckling, Civil engineering and architecture - Building manufacturing engineering, Samhällsbyggnadsteknik och arkitektur - Byggproduktionsteknik
HSV kategori
Forskningsprogram
Stålbyggnad
Identifikatorer
urn:nbn:se:ltu:diva-30391 (URN)42c01d98-55a2-4c73-be78-bae2b210c3ff (Lokal ID)978-92-9147-121-8 (ISBN)42c01d98-55a2-4c73-be78-bae2b210c3ff (Arkivnummer)42c01d98-55a2-4c73-be78-bae2b210c3ff (OAI)
Konferanse
European Conference on Steel and Composite Structures : 10/09/2014 - 12/09/2014
Prosjekter
FRAMEUP - Optimization of frames for effective assembling
Merknad
Godkänd; 2014; 20140917 (chrott)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-06-08bibliografisk kontrollert
Heistermann, C., Tran, A. T., Veljkovic, M. & Rebelo, C. (2014). Flangeless Connections in Steel Tubular Wind Towers (ed.). In: (Ed.), Kuldeep Virdi; Lauri Tenhunen (Ed.), Proceedings of the METNET Seminar 2013 in Luleå: Metnet Annual Seminar in Luleå, Sweden, on 22 - 23 October 2013 (pp. 157-168). Hämeenlinna: HAMK University of Applied Science
Åpne denne publikasjonen i ny fane eller vindu >>Flangeless Connections in Steel Tubular Wind Towers
2014 (engelsk)Inngår i: Proceedings of the METNET Seminar 2013 in Luleå: Metnet Annual Seminar in Luleå, Sweden, on 22 - 23 October 2013 / [ed] Kuldeep Virdi; Lauri Tenhunen, Hämeenlinna: HAMK University of Applied Science , 2014, s. 157-168Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

Extensive research is conducted on the improvement of renewable energies. One field is the use of wind energy, where the tower construction is one of the main issues. This paper deals with new ideas and ongoing research in this area. To raise the height of steel tubular towers, fatigue as the design limit and constraints due to transportation issues have to be overcome. Changes in the cross-section are considered as one of possible solutions. This work presents an extensive finite element study dealing with different ways to improve shell stability, which become the limiting criteria if a friction connection substitutes the common flange connection between two tower segments. The use of circular and polygonal cross-sections is briefly described and will be investigated in an experimental program.

sted, utgiver, år, opplag, sider
Hämeenlinna: HAMK University of Applied Science, 2014
HSV kategori
Forskningsprogram
Stålbyggnad; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
urn:nbn:se:ltu:diva-35219 (URN)9aa6babf-d61d-4a37-ae9a-0cdf81b05ff8 (Lokal ID)978-951-784-641-7 (ISBN)978-951-784-642-4 (ISBN)9aa6babf-d61d-4a37-ae9a-0cdf81b05ff8 (Arkivnummer)9aa6babf-d61d-4a37-ae9a-0cdf81b05ff8 (OAI)
Merknad

Godkänd; 2014; 20140217 (chrott)

Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2019-03-29bibliografisk kontrollert
Heistermann, C. (2014). Resistance of Friction Connections with Open Slotted Holes in Towers for Wind Turbines (ed.). (Doctoral dissertation). Paper presented at . : Luleå tekniska universitet
Åpne denne publikasjonen i ny fane eller vindu >>Resistance of Friction Connections with Open Slotted Holes in Towers for Wind Turbines
2014 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The most common solutions for in-situ connections of steel tubular towersegments of onshore wind turbines are ring flange connections. These havecertain drawbacks, such as e.g. costly production, long delivery time and ratherlow fatigue endurance. Friction connections with long open slotted holes havepreviously been proven to be a competitive alternative. In this work, the newtype of connection is investigated in various scales: segment tests, down-scaledexperiments and full-scale models. The influence of tower cross-section shape,execution tolerance (horizontal gap between the tower segments) and length ofthe connection on the bending resistance is thoroughly studied. In addition,buckling behaviour of the shell in the vicinity of the friction connection intowers with circular and polygonal cross-sections is analysed in order to checkpossible advantages of either cross-section. The influence of two types of theexecution tolerances on the connection strength is investigated: inwards bent“fingers”, leading to inclined gaps, and a parallel gap created by differentdiameters of the tower segments. Based on validated finite element analysesrecommendations for execution tolerances are proposed.A closer look is taken at the level of bolt forces under load application for thenew friction connections as well as for the ring flange connection. For theformer case, the influence of slotted holes on the joint resistance is checked.For both types of connections, comparison is drawn to hand calculation modelsused in engineering practice. Additionally, the distribution of meridionalstresses in the shell in the vicinity of the connection is studied.Based on the findings from the above described investigations,recommendations for the design of friction connections with open slotted holesin steel tubular towers for onshore wind turbines are given.

sted, utgiver, år, opplag, sider
Luleå tekniska universitet, 2014
Serie
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
HSV kategori
Forskningsprogram
Stålbyggnad
Identifikatorer
urn:nbn:se:ltu:diva-18533 (URN)90da20d2-14ab-4cf8-aee6-fbc1b4b39708 (Lokal ID)978-91-7583-151-0 (ISBN)978-91-7583-152-7 (ISBN)90da20d2-14ab-4cf8-aee6-fbc1b4b39708 (Arkivnummer)90da20d2-14ab-4cf8-aee6-fbc1b4b39708 (OAI)
Merknad
Godkänd; 2014; 20141011 (chrott); Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Christine Heistermann Ämne: Stålbyggnad/Steel Structures Avhandling: Resistance of Friction Connections with Open Slotted Holes in Towers for Wind Turbines Opponent: Professor Peter Schaumann, Institut für Stahlbau, Leibniz Universität Hannover, Tyskland Ordförande: Professor Milan Veljkovic, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Tid: Torsdag den 18 december 2014, kl 10,00 Plats: F531, Luleå tekniska universitetTilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2017-11-24bibliografisk kontrollert
Heistermann, C., Veljkovic, M., Simões, R., Rebelo, C. & Silva, L. S. (2013). Design of slip resistant lap joints with long open slotted holes (ed.). Journal of constructional steel research, 82, 223-233
Åpne denne publikasjonen i ny fane eller vindu >>Design of slip resistant lap joints with long open slotted holes
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2013 (engelsk)Inngår i: Journal of constructional steel research, ISSN 0143-974X, E-ISSN 1873-5983, Vol. 82, s. 223-233Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Current design procedures for slip resistant connections according to Eurocodes and American specifications are reviewed. Although failure of a slip resistant connection is defined at different levels of slip, 0.15 mm and 0.5 mm respectively, the calculation of the resistance is similar. Most of the research is performed on bolts in normal clearance holes. A testing program was conceived to evaluate the influence of long open slotted holes on the behavior of slip resistant lap joints with tension control bolts because of possible use of such connections in towers for wind turbines. In comparison to specimens with normal clearance holes it is found that the friction coefficient is about 4% lower. This reduction is lower than suggested by the current correction factors. Since none of the design procedures takes the reduction in bolt forces by time into account, the loss of pretension force is experimentally studied and an approximation is proposed. A second testing program was carried out with friction standard specimens in order to determine the slip factor for different surface treatments and steel grades in range between S275 and S690. The achieved slip factors for different surface preparations are in accordance with the classification of friction surfaces in EN 1090-2:2008 and differences obtained are addressed to variations in exposure to weather conditions. The steel grade does not have a significant influence.

HSV kategori
Forskningsprogram
Stålbyggnad; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
urn:nbn:se:ltu:diva-3913 (URN)10.1016/j.jcsr.2012.11.012 (DOI)000317156500019 ()2-s2.0-84872274385 (Scopus ID)1c3c63b4-1dfb-4d1b-abb5-f4e7ee99ce68 (Lokal ID)1c3c63b4-1dfb-4d1b-abb5-f4e7ee99ce68 (Arkivnummer)1c3c63b4-1dfb-4d1b-abb5-f4e7ee99ce68 (OAI)
Merknad

Validerad; 2013; 20130121 (andbra)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2019-03-29bibliografisk kontrollert
Heistermann, C. & Veljkovic, M. (2012). Bolts for slip resistant joints in towers for wind turbines (ed.). In: (Ed.), Kuldeep Virdi; Lauri Tenhunen (Ed.), Proceedings of the METNET Seminar 2012 in Izmir: Metnet Annual Seminar in Izmir, Turkey, on 10 - 11 October 2012. Paper presented at Metnet Annual Seminar : 10/10/2012 - 11/10/2012 (pp. 31-39). Hämeenlinna, Finland: HAMK University of Applied Science
Åpne denne publikasjonen i ny fane eller vindu >>Bolts for slip resistant joints in towers for wind turbines
2012 (engelsk)Inngår i: Proceedings of the METNET Seminar 2012 in Izmir: Metnet Annual Seminar in Izmir, Turkey, on 10 - 11 October 2012 / [ed] Kuldeep Virdi; Lauri Tenhunen, Hämeenlinna, Finland: HAMK University of Applied Science , 2012, s. 31-39Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

This paper deals with a new solution to connect various segments in a tubular steel tower for wind power plants. Tests are performed to determine appropriate bolts for such connections. They focus on checking the development of pretension forces in the bolts during a period of one week. The behaviour of four different types of bolts is described and evaluated. For one type of bolt the force reduction is monitored for two different clamping lengths. Finally, recommendations for further tests are given.

sted, utgiver, år, opplag, sider
Hämeenlinna, Finland: HAMK University of Applied Science, 2012
HSV kategori
Forskningsprogram
Stålbyggnad; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
urn:nbn:se:ltu:diva-31346 (URN)580e50be-20ee-42e3-82a2-67be45c66fcb (Lokal ID)978-951-784-592-2 (ISBN)978-951-784-593-9 (ISBN)580e50be-20ee-42e3-82a2-67be45c66fcb (Arkivnummer)580e50be-20ee-42e3-82a2-67be45c66fcb (OAI)
Konferanse
Metnet Annual Seminar : 10/10/2012 - 11/10/2012
Merknad

Godkänd; 2012; 20130218 (chrott)

Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2019-03-29bibliografisk kontrollert
Heistermann, C., Heistermann, T., Limam, M. & Veljkovic, M. (2012). Finite element analysis of a single lap joint (ed.). In: (Ed.), Nordic Steel Construction Conference 2012: September 5-7, 2012 Oslo, Norway : Proceedings. Paper presented at Nordic Steel Construction Conference : 05/09/2012 - 07/09/2012 (pp. 673-682). Oslo: Norwegian Steel Association
Åpne denne publikasjonen i ny fane eller vindu >>Finite element analysis of a single lap joint
2012 (engelsk)Inngår i: Nordic Steel Construction Conference 2012: September 5-7, 2012 Oslo, Norway : Proceedings, Oslo: Norwegian Steel Association , 2012, s. 673-682Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

A single shear lap joint of steel grade S355 is modelled with finite elements to investigate the influence of externally applied tensile loading on the loss of pretension in the engaged bolts. Additionally, a parameter study is performed to understand the effect of various steel grades on the loss of pretension. It is found that the slip resistance of the specimen depends on the steel grade of the clamped plates. Besides, the final resistance of the single shear lap joint has been found to increase after a slip of 0,15 mm has occurred due to a secondary bending moment. However, the final resistance of the specimen has been found to depend on the size of assembling tolerances; the bigger the distance between the clamped plates, the lower the resistance.

sted, utgiver, år, opplag, sider
Oslo: Norwegian Steel Association, 2012
HSV kategori
Forskningsprogram
Stålbyggnad; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
urn:nbn:se:ltu:diva-31856 (URN)62975fba-e835-4908-9131-60fd87333747 (Lokal ID)978-82-91466-12-5 (ISBN)62975fba-e835-4908-9131-60fd87333747 (Arkivnummer)62975fba-e835-4908-9131-60fd87333747 (OAI)
Konferanse
Nordic Steel Construction Conference : 05/09/2012 - 07/09/2012
Merknad

Godkänd; 2012; 20120920 (chrott)

Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2019-03-29bibliografisk kontrollert
Organisasjoner