约束体系对大跨度斜拉桥抗震性能的影响研究

Effect Analysis of Constrained System on Seismic Performance of Long-span Cable-stayed Bridge

文章采用非线性时程分析方法研究了地震作用下弹性约束体系和黏滞阻尼器体系对斜拉桥桥墩内力和塔顶位移的影响。结果表明,弹性约束体系和黏滞阻尼器体系均能有效地降低结构位移,但弹性约束体系墩底剪力和弯矩有所增大,设计时应予以注意。

In this paper, the effect of elastic restrained system and viscous dampers system on the internal force and displacement of long-span cable-stayed bridge tower under seismic load using nonlinear time history analysis method. The results show that, the structural displacement is reduced effectively with elastic restrained system or viscous dampers system, but the shear force and bending moment of tower top are increased with elastic restrained system, which should be noticed in seismic design.