Research on anti-buckling restraint support for damping control of long-span steel truss deck-type arch bridge

[摘要] In this paper, the principle of energy dissipation of anti-buckling support and the simulation method in finite element are introduced. A large-span steel truss deck type arch bridge with a large span is selected as the research object. Based on the analysis of seismic response characteristics, the anti-buckling restraint support is used to systematically study the damping control of long-span steel truss arch bridges. By comparing the seismic responses of the arch bridges before and after the anti-buckling support, the arrangement position of the anti-buckling support was optimized, and the damping effect of anti-buckling support was analyzed. The results show that the reasonable anti-buckling arrangement has better damping effect for long-span arch bridges, but the damping effect of anti-buckling support under different arrangements is quite different.

[发布机构] School of Civil Engineering, Beijing Jiaotong University, Beijing; 100044, China^1;China Railway Eryuan Engineering Group Co. Ltd., Sichuan Province, Chengdu; 610031, China^2

[效力级别] 无线电电子学

[关键词] Damping control;Damping effect;Large span;Long-span arch bridges;Research object;Seismic response characteristics;Steel truss;Steel truss-arch bridge