Elasto-plastic dynamic time response and damage evaluation of a part cable-stayed bridge under severe earthquake
Xijiang Large Bridge is a part cable-stayed bridge with 5 spans and 4 towers in Guangdong province of China. The FEM analytical model of the whole bridge is established by the commercial FEM software ANSYS. Then, the elasto-plastic dynamic time response is calculated under the earthquake excitation. It is seen that the natural frequencies of the part cablestayed bridge are much greater than the normal cablestayed bridge. The plastic hinge would first occur at the bottom of the main bridge pier under the strong earthquake. Finally, the solid FEM model of the main pier is established by the commercial FEM software ABAQUS. A user subroutine (UAMT) based on the damage theory is inserted into the software ABAQUS. The damage evolution process of the main pier is simulated in details under the earthquake excitation. The result shows that Xijiang Large Bridge has a good seismic resistance. The proposed method is valuable for the damage evaluation and safety assessment of the large-span bridges.
Part cable-stayed bridge Reinforced concrete structure Earthquake Elasto-plastic dynamic time response Damage evaluation
Xuesong Tang Xingye Chen Fan Geng
School of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha, Hunan 410114, China
国际会议
2012 International Symposium on Structural Integrity 2012国际结构完整性学术研讨会 ISSI 2012
济南
英文
335-341
2012-10-31（万方平台首次上网日期，不代表论文的发表时间）