高性能泡沫混凝土耗能墙-RC框架结构抗震性能数值模拟  

Numerical simulation of the seismic performance of high-performance foam concrete energy dissipation wall-RC frame structures

作　　者：杨守猛 孙柏涛[1,2] 陈相兆 YANG Shoumeng;SUN Baitao;CHEN Xiangzhao(Key Laboratory of Earthquake Engineering and Engineering Vibration of CEA,Institute of Engineering Mechanics,CEA,Harbin 150080,Heilongjiang,China;Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,Heilongjiang,China)

机构地区：[1]中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]地震灾害防治应急管理部重点实验室,黑龙江哈尔滨150080

出　　处：《地震工程学报》2024年第5期1142-1150,1171,共10页China Earthquake Engineering Journal

基　　金：国家重点研发计划课题(2022YFC3005704);国家自然科学联合基金重点项目(U2239252);国家重点研发计划课题(2019YFC1509301)。

摘　　要：为了降低填充墙与框架柱在地震中发生的不利相互作用(如短柱破坏),提出将高性能泡沫混凝土作为耗能墙布置在填充墙与框架柱接触区域,减缓框架柱的损伤;结合现有试验,对耗能墙-RC框架进行模拟,选取模型参数与材料本构关系,划分各构件单元类型,设置构件之间相互作用形式,建立高性能泡沫混凝土耗能墙精细有限元模型;并对耗能墙-RC框架进行滞回加载模拟,以获取其在地震作用下的响应。模拟结果表明,在层间位移角较小时,耗能墙耗能效果不明显,随着层间位移角的增大其耗能能力逐渐显现;当层间位移角为1/109时,耗能墙相比于普通填充墙,耗能能力增加了约30.20%;层间位移角为1/48时,其耗能能力增加了约21.54%。相较于普通填充墙,在相同的位移下,耗能填充墙与框架柱的接触压力最大值减小了约2/3。从模拟结果可以看出,提出的组合墙体对于地震高烈度区填充墙框架抗震设计具有一定的借鉴意义。To address the adverse interactions between infilled walls and frame columns,such as short-column damage under earthquakes,this paper proposes the use of high-performance foam concrete as an energy dissipation wall in the contact area between infill walls and frame columns.This approach aims to mitigate damage to the frame columns.Building on existing tests,the energy dissipation wall-RC frame system was simulated.The model parameters and material constitutive relationships were carefully selected,and the element types of each member were identified.A detailed finite element model of the high-performance foam concrete energy dissipation wall was then developed by defining the interactions between elements.The energy dissipation wall-RC frame was subjected to hysteretic loading in simulations to observe its earthquake response.Simulation results indicated that the energy dissipation effect of the wall is not significant at small story drift ratios.However,as the story drift ratio increases,the energy dissipation capacity becomes more pronounced.Specifically,at a story drift ratio of 1/109,the energy consumption capacity of the wall increases by approximately 30.20%compared to an ordinary infilled wall.At a story drift ratio of 1/48,the capacity increases by approximately 21.54%.Compared with ordinary infilled walls,the maximum contact pressure between the frame column and the energy dissipation infilled wall is reduced by approximately 2/3 under the same displacement.These findings suggest that the proposed composite wall could provide valuable insights for the seismic design in areas with high seismic intensity.

关 键 词：高性能泡沫混凝土 抗震性能 填充墙框架结构 耗能墙 数值模拟 

分 类 号：TU377.9[建筑科学—结构工程]