既有砌体结构低成本摩擦滑移加固方法的拟静力试验研究  

Pseudo-static test research on friction-slip reinforcement method for existing masonry structures with low cost

作　　者：尹保江 程绍革 黄世敏 丁相宜 韩淼[3] 殷浚铭 宗立阳 Yin Bao-jiang;Cheng Shao-ge;Huang Shi-min;Ding Xiang-yi;Han Miao;Yin Jun-ming;Zong Liyang(China Academy of Building Research,Beijing 100013,China;State Key Laboratory of Building Safety and Environment,Beijing 100013,China;School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]建筑安全与环境国家重点实验室,北京100013 [3]北京建筑大学土木和交通学院,北京100044

出　　处：《工程抗震与加固改造》2023年第6期141-149,159,共10页Earthquake Resistant Engineering and Retrofitting

基　　金：国家重点研发计划(2019YFC1509304)。

摘　　要：基于摩擦滑移隔震原理,提出既有砌体结构“双圈梁+扁担梁”摩擦滑移加固方法。设计和制作采用了该方法加固前后的砖墙模型,进行了拟静力对比试验,分析了加固前后墙片的破坏形态、承载力、刚度退化、延性及耗能能力,测试了滑移面的摩擦系数。研究结果表明,本文提出的摩擦滑移加固方法,轻松实现了既有结构隔震加固的托换改造,大大降低了结构隔震改造成本和施工难度,缩短了改造周期;该方法削减了地震能量向上部结构的输入,墙片耗能能力及延性大幅提高,刚度退化速度变缓,上部结构完好;同时限位装置避免了主体结构倾覆,实现了“有限滑移”,确保了大震后建筑功能的快速恢复。Based on the principle of friction-slip isolation,a friction-slip reinforcement method of"double ring beam+flat pole beam"for existing masonry structures is proposed.The brick wall model before and after reinforcement by this method is designed and fabricated,and the quasi-static comparison test is carried out to analyze the failure mode,bearing capacity,stiffness degradation,ductility and energy dissipation capacity of the wall before and after reinforcement.The friction coefficient of the slip surface is estimated.The research results show that the friction-slip reinforcement method proposed in this paper can easily realize the underpinning transformation of the existing structure for seismic isolation and reinforcement,and greatly reduces the structural isolation transformation cost,construction difficulty and transformation period,and reduce the input of seismic energy to the upper structure,greatly improve the energy dissipation capacity and ductility of the wall,and the stiffness degradation rate becomes slower and the upper structure is intact;At the same time,the limit device avoids the risk of excessive slippage and overturning of the main structure,realizes"limited slippage",ensures the rapid recovery of building functions after a major earthquake.

关 键 词：既有砌体结构 摩擦滑移 限位装置 拟静力试验 摩擦系数 

分 类 号：TU362[建筑科学—结构工程] TU365