唐津高速公路永定新河大桥减隔震设计介绍

The Design of Seismic Isolation and Energy Absorption for Yong Ding New River Bridge at Tang Jin Expressway

本文根据活动盆式支座和弧形钢板条的减、隔震原理，通过对永定新河大桥主桥的抗震非线性分析，采用了弧形钢板条耗能器和活动盆式支座组合体系作为抗震设计的措施。计算表明，该体系取得了理想的减震、耗能效果。这种抗震设计思想对高烈度地区的大跨径连续梁桥设计具有现实意义。

In this paper, based on the principle of seismic isolation and energy absorption for sliding pot bearing and curved steel strip, according to seismic nonlinear analysis of Yong Ding New river bridge, a system of sliding pot bearings incorporating curved steel strip energy absorber is presented. Computation shows that this system is suitable for seismic isolation and energy absorption. This idea can be used for design of large span continuous beam in strong seismic area.