不同挡块形式对中小跨径梁桥横向抗震性能的影响

发布时间：2018-06-07 18:03

本文选题：中小跨径梁桥 + 板式橡胶支座滑动　；参考：《工程力学》2016年03期

【摘要】：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。
[Abstract]:In view of the typical earthquake damage characteristics of small span beam bridge in Wenchuan earthquake in China, a new type of friction block is proposed to replace the conventional concrete block as the lateral limit device of the bridge, and then a three-span continuous beam bridge is taken as an example. On the basis of considering the mechanical factors such as slippage and nonlinearity of the plate rubber bearing, the transverse seismic response characteristics of the structure with conventional concrete block and friction block are analyzed and calculated. The results show that the friction block can reduce the seismic response of the structure effectively and greatly improve the seismic performance of the structure through its own friction hysteretic energy dissipation compared with the conventional concrete block.
【作者单位】：同济大学土木工程防灾国家重点实验室;
【基金】：国家973项目(2013CB036302) 国家自然科学基金项目(51278371) 交通运输部建设科技项目(2013318800020)
【分类号】：U442.55

【共引文献】