简支梁桥的地震反应性能

Characteristic of Seismic Responses of Simply Supported Beam Bridges

分析研究了简支梁桥在地震作用下的空间地震反应性能，着重讨论了桥梁支座在地震过程中的反应特点和滑动铰支座的摩擦系数对桥梁空间地震反应性能的影响。因为摩擦的滞回特性，所以在地震过程耗散大量的能量。滑动铰支座的摩擦存在对桥梁的抗震是有利的。

The characteristic of seismic responses of simply supported beam bridges is systematically studied, with emphasis put upon the seismic responses of bridge bearings and the effect of friction coefficient of the sliding bearings. It is shown that a great deal of energy is absorbed during an earthquake due to the hysteretic characteristic of friction. Therefore, it is desirable for friction to be increased in the sliding bearings for an aseismatic design.