HPFRC耗能墙-RC框架结构有限元模拟及参数分析  

Numerical and parametric study on the HPFRC energy dissipation wall-RC frame structure

作　　者：杨鹏辉[1,2] 辛力[3] 何伟 梁兴文[2] YANG Penghui;XIN Li;HE Wei;LIANG Xingwen(General Institute of Design and Research,Xi'an University of Architecture&Technology,Xi'an 710055,China;School of Civil Engineering,Xi'an University of Architecture&Technology,Xi'an 710055,China;China Northwest Architecture Design and Research Institute Co.,Ltd.,Xi'an 710018,China;China Qiyuan Engineering Design and Research Institute Co.,Ltd.,Xi'an 710018,China)

机构地区：[1]西安建筑科技大学设计研究总院,陕西西安710055 [2]西安建筑科技大学土木工程学院,陕西西安710055 [3]中国建筑西北设计研究院有限公司,陕西西安710018 [4]中国启源工程设计研究院有限公司,陕西西安710018

出　　处：《地震工程与工程振动》2021年第2期122-133,共12页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51278402)。

摘　　要：在高性能纤维增强混凝土(HPFRC)耗能墙-钢筋混凝土(RC)框架结构抗震性能试验研究基础上,对其进行了有限元模拟分析,结果表明:有限元计算结果与试验结果吻合较好。在此基础上,考虑HPFRC耗能墙材料强度、配筋率、距离柱边距离、耗能墙宽厚比以及高宽比等因素,利用有限元方法进行了参数扩展分析。结果表明:随着上述前3个参数取值的增加,试件各个荷载特征点的水平承载力均有所提高,但变形能力变化不大;随着HPFRC耗能墙宽厚比的增大,试件各个荷载特征点的水平承载力均明显减小,极限位移也有所减小;随着HPFRC耗能墙高宽比的增大,试件各个荷载特征点的水平承载力均明显减小,但峰值荷载点对应的位移有所增大。为保证此类结构的抗震性能,针对HPFRC耗能墙材料强度、配筋率、HPFRC耗能墙宽厚比、高宽比和HPFRC耗能墙距离柱边距离等参数,提出了相关建议值供设计参考。Based on the experimental study of seismic behavior of high performance fiber reinforced concrete(HPFRC)energy dissipation wall-reinforced concrete(RC)frame structure,the finite element analysis was carried out.The analysis results show that the finite element calculation results are in good agreement with the test results.On this basis,considering HPFRC strength,reinforcement ratio,distance from column edge,width-to-thickness ratio,and aspect ratio of HPFRC energy dissipation wall,the finite element method is used for parameter expansion analysis.The results show that:with the increase of the first three parameters,the horizontal bearing capacity of each load characteristic point of the specimen has been improved,but the deformation capacity has little change;with the increase of width-to-thickness ratio of HPFRC energy dissipation wall,the horizontal bearing capacity of each load characteristic point and the ultimate displacement of the specimen have been decreased;with the increase of aspect ratio of HPFRC energy dissipation wall,the horizontal bearing capacity of each load characteristic point of the specimen has been decreased obviously,but the displacement corresponding to the peak load point increases.In order to ensure the aseismic performance of this structure,the paper puts forward some suggestions for the parameters of HPFRC energy dissipation wall to provide reference for design,such as HPFRC strength,reinforcement ratio,width-to-thickness ratio,aspect ratio and the distance between HPFRC energy dissipation wall and column.

关 键 词：纤维增强混凝土耗能墙 钢筋混凝土框架 有限元分析 高宽比 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程] TU377.94