CONSTRUCTION SIMULATION FOR LARGE-SPAN CONTINUOUS STEEL-CONCRETE COMPOSITE BEAM BRIDGE
Lishuiqiao segment of light railway Line S in Beijing City is a large-span continuous steel-concrete composite beam bridge. To ensure the quality and safety of the whole construction process, numerical simulation is carried out for construction process for Lishuiqiao Bridge. Based on ANSYS software, three dimensional nonlinear analysis about composite beam bridge made of steel box beam and concrete slab is conducted in this paper. For steel box beam including stiffens, shel1181 element are adopted; and for concrete slab, solid65 elements are adopted. The ordinary steel bars in the concrete are defined through the real constant; the pre-stressed steel bars are adopted as link8 elements, and the prestress is definite through real constants of the element. Slips between concrete slab and the steel beam are not considered in the Finite Element model because of the whole model in stress elastic state during construction process; the material nonlinear property of steel and concrete is considered through stress-strain relationship of nonlinear material. A whole bridge model is established to make a numerical simulation of the construction process of the composite bridges. Death and birth of the elements are applied in the analysis to simulate the different structural systems in the corresponding construction process. The result demonstrated the good mechanical characteristic of the steel-concrete composite bridge and the feasibility of the construction process as well. In addition, numerical results agree well with test results, which illustrated that finite element analysis can simulate real construction process of bridge construction successfully. It proves that the finite element analysis can be used instead of some test research.
steel-concrete composite beam bridge construction process numerical simulation finite element test on spot
Zi-Wen Jia Ai-Guo Chen
School of Civil Engineering, Changan University, Xian 710061, P.R. China School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, P.R. Chin
国际会议
广州
英文
1296-1301
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）