摘要
为增强装配式剪力墙的耗能能力,提高其施工效益,提出一种具有摩擦抗剪与耗能功能的新型装配式剪力墙结构,并进行了抗震性能试验.为弥补试件数量不足以及精确确定最优起滑荷载的设计需求,结合新型装配式剪力墙抗震性能试验结果,探讨相应高精度有限元模型建立方法,并进行多参数结构抗震性能影响分析.最后,基于有限元分析结果和新型装配式剪力墙工作原理,确定最优起滑荷载.研究结果表明:所提出的新型装配式剪力墙具有良好的滞回耗能能力;螺栓预紧力、钢材摩擦因数、螺栓总距等对结构抗震性能影响显著,应作为相应结构设计的主要参数,竖向荷载、钢板厚度、钢材弹性模量影响较小,可以忽略不计;当起滑荷载设定为墙体屈服荷载时,结构模型耗能达到峰值,同时耗能系数开始明显降低,因而将结构的最优起滑荷载确定为屈服荷载.
To improve the energy dissipation capacity and construction benefit of prefabricated shear walls,a new type of prefabricated shear wall structure with the function of friction shear resistance and energy dissipation was proposed,and the seismic performance tests were carried out.To make up for the insufficient quantity of specimens and accurately determine the design requirements of the optimal slip load,based on the seismic performance test results of the proposed structure,this paper discussed the establishment method of the corresponding high-precision finite element model.The multi-parameter analysis of structural seismic performance was carried on.At last,based on the finite element analysis results and the working principle of the new prefabricated shear wall,the optimal slip load was determined.The results show that the proposed new prefabricated shear wall has good hysteretic energy dissipation capacity.Bolt preload,steel friction coefficient and total bolt distance have significant effect on the seismic performance of the structure,and they can be used as the main design parameters of the structure.Vertical load,steel plate thickness and steel elastic modulus have little effects and can be ignored.When the slip load is set as the yield load of the wall,the energy dissipation value of the structure model reaches the peak,and the energy dissipation coefficient begins to decrease significantly.Therefore,the yield load of the wall can be determined as the optimal slip load of the structure.
作者
樊禹江
黄欢欢
廖凯
丁佳雄
葛俊
FAN Yujiang;HUANG Huanhuan;LIAO Kai;DING Jiaxiong;GE Jun(School of Architecture,Chang’an University,Xi’an 710061,China;School of Civil Engineering,Chang’an University,Xi’an 710061,China)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2023年第3期41-50,共10页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(51808046)。
关键词
装配式结构
抗震性能
有限元模拟
摩擦滑移
屈服荷载
prefabricated construction
seismic performance
finite element analysis
sliding friction
yield load
