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该文运用反应谱和非线性时程方法分析并校核了红水河大桥两种设计概率地震下的抗震性能。在明确结构易损部位破坏的基础上,开展了减隔震构造措施研究,并对阻尼器阻尼系数和双曲球形减隔震支座滑动面半径进行参数化分析,获得了减隔震措施最优设计参数。分析表明:E2地震作用大桥单向支座水平力不满足抗震性能要求,通过设置减隔震措施能够有效地改善结构抗震性能。
In this paper, response spectrum and nonlinear time-history method are used to analyze and verify the seismic performance under two kinds of designed probability earthquakes of Hongshuihe Bridge. On the basis of the clear damage of the structural vulnerable parts, the seismic isolation measures are studied, and the damping coefficients of the damper and the radius of the sliding surface of the hyperbolic spherical seismically isolated bearing are analyzed parametrically. Excellent design parameters. The analysis shows that the horizontal force of one-way bearing of E2 earthquake can not meet the requirements of seismic performance, and the anti-seismic measures can effectively improve the seismic performance of the structure.