海南火山石砌体结构的FRP抗震加固试验研究  

Experimental study on FRP seismic strengthening of Hainan volcanic rock masonry structure

作　　者：熊雯磊 王珍珍 周智 陈云 王志佳[1] 段晓农 XIONG Wenlei;WANG Zhenzhen;ZHOU Zhi;CHEN Yun;WANG Zhijia;DUAN Xiaonong(School of Civil Engineering and Architecture,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学土木建筑工程学院,海南海口570228

出　　处：《自然灾害学报》2023年第1期161-170,共10页Journal of Natural Disasters

基　　金：2019年海南省基础与应用基础研究计划(自然科学领域)高层次人才项目(2019RC097);海南省院士创新平台项目(YSPTZX202006)。

摘　　要：文中聚焦热带海洋腐蚀环境下砌体结构的抗震加固问题,提出了一种新型FRP材料加固砌体结构方法,分别在FRP加固前后2种情况下对一栋缩尺比为1∶4的火山石砌体房屋模型进行振动台试验,对加固前后火山石砌体结构的破坏现象、动力特性、加速度反应和位移反应进行了分析。试验结果表明:采用该FRP加固方法使结构在地震作用下的刚度退化减缓,整体性增强,同时大幅提高了砌体结构的变形能力;采用该FRP加固砌体结构后,结构的抗震性能得到显著提升,大幅减小了砌体结构在强震作用下的损伤。Focusing on the seismic strengthening of masonry structure under tropical marine corrosion environment,a new method of strengthening masonry structure with FRP materials was proposed.Shaking table tests were carried out on a 1∶4 scale volcanic rock masonry building model without and with FRP reinforcement respectively.The failure phenomena,dynamic characteristics,acceleration response and displacement response of unreinforced and reinforced volcanic stone masonry structures were analyzed.The test results show that the FRP reinforcement method delays the stiffness degradation of the structure under severe earthquakes,increases the integrity of the masonry structure,and effectively improves the deformation capacity of the masonry structure.The seismic performance of masonry structure strengthened with FRP is significantly better than that of masonry structure without reinforcement,which can greatly reduce the damage of masonry structure under severe earthquakes.

关 键 词：热带海洋腐蚀环境 砌体结构 FRP 抗震加固 振动台试验 

分 类 号：TU365[建筑科学—结构工程]