针对我国汶川地震中小跨径梁桥的典型震害特征,提出一种新型摩擦型挡块代替常规混凝土挡块作为桥梁横向限位装置;然后以一座三跨连续梁桥为例,在考虑板式橡胶支座滑动、挡块非线性等力学因素的基础上,对分别采用常规混凝土挡块和摩擦型挡块时结构的横向地震反应特点进行了分析计算。结果表明,与常规混凝土挡块相比,摩擦型挡块通过自身的摩擦滞回耗能可以有效地降低结构的地震响应,大大改善结构的抗震性能。 Aiming at the typical damage characteristics of small-span beam bridges in Wenchuan earthquake of our country, a new type of frictional stop is proposed to replace the conventional concrete stoppers as the transverse limiter of bridge. Then, taking a three-span continuous beam bridge as an example, Bearing slip and block non-linearity, the characteristics of transverse seismic response of the structure with conventional concrete block and frictional block were analyzed and calculated. The results show that compared with the conventional concrete block, the frictional hysteresis energy consumption of the friction block can effectively reduce the seismic response of the structure and greatly improve the seismic performance of the structure.