Mechanical behaviour of steel-concrete twin I-girder bridges

Weiwei Lin*, Heang Lam, Teruhiko Yoda

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


Steel-concrete composite twin l-girder bridges have been built a lot in both Europe and Japan, but the lack of redundancy has always been a concern in U.S. and many other countries. In addition, few experimental studies have been performed on the mechanical performance of such bridges, particularly for the intact bridges. On this background, a steel-concrete composite twin l-Girder bridge model was designed according to the current highway bridge design specification in Japan and tested in the laboratory. The static loading tests were performed, and two loading conditions including both symmetrical loading and unsymmetrical loading were applied. Load versus deflection relationships were measured in the loading test, and the failure mode of the test specimen was discussed. The flexural strain development on bottom flanges of two main girders was also reported in this paper to confirm the load transfer between two main girders. In addition, the theoretical results on the basis of the classic theory were also provided to compare with the test results. The comparison indicates that the theoretical analyses can predict the behaviour of the twin l-girder bridges very well in the elastic stage by considering the effective width of the slab. The load transfer paths in such bridges were also discussed on the basis of the test results under un-symmetrical loading.

Original languageEnglish
Title of host publicationIABSE Conference, Kuala Lumpur 2018
Subtitle of host publicationEngineering the Developing World - Report
PublisherInternational Association for Bridge and Structural Engineering
Number of pages8
ISBN (Electronic)9783857481598
Publication statusPublished - 1 Jan 2018
MoE publication typeNot Eligible
EventIABSE Conference Kuala Lumpur: Engineering the Developing World - Kuala Lumpur, Malaysia
Duration: 25 Apr 201827 Apr 2018


ConferenceIABSE Conference Kuala Lumpur: Engineering the Developing World
CityKuala Lumpur


  • Loading test
  • Mechanical behaviour
  • Steel-concrete composite girder
  • Twin girders


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