摘要
为改善普通填充墙(板)结构的抗震性能,基于黏弹性阻尼器的原理和构造,提出一种构造简单、减震机理明确、具有自主知识产权的新型减震填充墙(板)。本文介绍减震填充墙(板)的构造及工作原理;给出适合构筑减震层的材料及其滞回性能;对减震填充墙(板)单元、带减震填充墙(板)平面框架进行性能试验,揭示减震填充墙(板)通过相邻砌体(墙板)单元间的相对运动迫使减震层发生剪切滞回变形、耗散地震输入能量的减震机理,建立减震填充墙(板)平面内"双斜撑"力学模型;通过带减震填充墙(板)三维框架的动力时程分析,验证地震下减震填充墙(板)可通过削减墙体自身对主体结构的刚度效应,显著降低对主体结构动力特性及抗震性能的影响,保护墙体不破坏的有效性;对减震填充墙(板)的平面外性能进行试验及分析,揭示减震填充墙(板)"拱承载机制"的平面外工作机理及"四铰拱"的破坏模式;介绍减震填充墙(板)在楼梯间、(震损)加固建筑等应用场景中的原理及构造;给出减震填充墙(板)今后研究的问题及方向。
In order to improve the seismic performance of conventional infilled masonry wall,an innovative configuration named damped infilled wall/wallboard(DIW)was proposed by introducing the principle of viscoelastic damper.DIW has a simple construction,explicit working mechanism and independent intellectual property right.In this paper,the configuration and working mechanism of DIW was introduced.The material suitable for damping layer construction and its corresponding hysteretic performance were given.Seismic performance tests were carried out on DIW unit as well as plane frame structures with DIW.The in-plane working mechanism that the shear hysteretic deformation which is casued by relative movement between adjacent subpanel of DIW dissipates the input seismic energy was revealed.The double bracing macro-modelling method was proposed.The proposed model was used in the time-history analysis of a 3 D frame structure with DIW.Results show that DIW is able to significantly reduce the influence on the dynamic characteristic and seismic performance of the main structures,and to protect the wall from suffering damages through decreasing the stiffness effect of wall/wallboard on structure.Out-of-plane performance of DIW was also studied by tests.The results reveal that the out-of-plane mechanism is the arching mechanism and the failure mode is fourhinge arching.The problems and directions that need to be further studied were given.
作者
周云
陈章彦
郭阳照
张超
ZHOU Yun;CHEN Zhangyan;GUO Yangzhao;ZHANG Chao(School of Civil Engineering,Guangzhou University,Guangzhou 510006,China;Sichuan Institute of Building Research,Chengdu 610081,China)
出处
《防灾减灾工程学报》
CSCD
北大核心
2021年第4期753-767,共15页
Journal of Disaster Prevention and Mitigation Engineering
基金
国家重点研发计划(2017YFC0703600)
国家自然科学基金项目(51178128,51478133,51508117)
广东省自然科学基金(2016A030310259)资助
关键词
填充墙
减震填充墙
装配式减震墙板
抗震性能
震损加固
楼梯间
infilled masonry wall
damped infilled wall
precast damping wallboard
seismic performance
reinforcement of damaged structure
staircase
