Structure and behavior of floor system of two super high-speed railway Changjiang composite bridges |
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| Authors: | ZHANG Ye-zhi ZHANG Min |
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| Affiliation: | (1) Federation of American Scientists, Washington, DC, USA;(2) Public Interest Energy Research, California Energy Commission, Sacramento, CA, USA;(3) CBM Engineers, Inc., Houston, TX, USA;(4) Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA;(5) Department of Architecture, Massachusetts Institute of Technology, Cambridge, MA, USA;(6) Shelter for Life, Oshkosh, WI, USA |
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| Abstract: | Wuhan Tianxingzhou Changjiang (WTC) Bridge and Nanjing Dashengguan Changjiang (NDC) Bridge are two super high-speed railway
3-trusses composite bridges. This is the first time of using three trusses in such large bridges in the world. These two types
of railway floor systems of the two bridges have never been used in China before. The problem how to conform the deformations
and stress levels of the railway floor system of WTC Bridge was studied. After finite element analysis and comparison, the
plan of arranging one expansion stringer every two panels in railway floor system were proposed and good effect was obtained.
Because of the application of three trusses, the allocation of the loads acted on the deck in three trusses is different and
varies in different places of NDC Bridge. This problem was studied by model experiment and 3D finite element analysis. The
results of 3D FEM analysis coincide with the model test results. The allocation rule of the loads acting on the deck in three
trusses was presented. Because of the application of monolithic decks, the stiffness and structural integrity of NDC Bridge
are high. |
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| Keywords: | high-speed railway composite mechanics characteristics floor system Wuhan Tianxingzhou Changjiang Bridge Nanjing Dashengguan Changjiang Bridge |
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