大跨径长联轨道交通工程连续梁桥抗震设计

Seismic Design of Continuous Beam Bridge for Long-span Long-rail Traffic Project

采用反应谱法对大跨径长联轨道交通工程连续梁桥进行了E1和E3地震下的纵、横向的地震反应分析,并根据规范进行了验算。计算结果表明:对只设置一个制动墩的大跨径长联连续梁,在不设置粘滞阻尼器但考虑活动墩摩阻力的情况下,E1地震弹性状态和E3地震塑性状态下的抗震能力验算均可满足规范要求。

The response spectrum method is used to analyze the vertical and horizontal seismic response of a continuous beam bridge of long-span long-rail traffic project under E1 and E3 earthquakes, and to check and calculate based on the norm. The calculation result shows that the seismic capacity checking calculation of long-span continuous beam constructed with only one braking pier in the E1 earthquake elastic state and E3 earthquake plastic state under the condition of not setting up viscous damper but considering frictional resistance of movable pier can satisfy the requirements of specifications.