纤维增强水泥基复合材料装配式节点抗震性能研究  

Research on seismic performance of fiber-reinforced cementitious composites fabricated joints

作　　者：吕相蓉 李秀领[1,2] 郭强 孙广[4] 李言 丁经伟 鲁西 Lv Xiangrong;Li Xiuling;Guo Qiang;Sun Guang;Li Yan;Ding Jingwei;Lu Xi(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Key Laboratory of Building Structural Retrofitting and Underground Space Engineering,Ministry of Education,Shandong Jianzhu University,Jinan 250101,China;The Second Construction Limited Company of China Construction Eighth Engineering Division,Jinan 250000,China;China Construction Second Engineering Bureau Ltd,Beijing 101100;School of Civil Engineering,Tianjin City University,Tianjin 300350,China)

机构地区：[1]山东建筑大学土木工程学院,山东济南250101 [2]建筑结构加固改造与地下空间工程教育部重点实验室,山东济南250101 [3]中建八局第二建设有限公司,山东济南250000 [4]中国建筑第二工程局有限公司,北京101100 [5]天津大学建筑工程学院,天津300350

出　　处：《建筑科学》2021年第9期80-89,共10页Building Science

基　　金：国家自然科学基金项目(编号:51278290);山东省自然科学基金(编号:ZR2020ME245);中国地震局工程力学研究所实验室开放课题(编号:2019D10)。

摘　　要：为了研究普通混凝土和高性能纤维增强水泥基复合材料(High-performance fiber-reinforced cementitious composites,简称HPFRCC)两种不同核心区浇筑材料对装配式节点抗震性能的影响,进行了拟静力试验,并在试验基础上利用Open Sees软件对比计算,分析轴压比和计算模型的影响。结果表明,在低周往复作用下,模拟与试验结果吻合度较好;HPFRCC应用于装配式节点核心区,可提高节点核心区的抗剪承载力和节点的耗能能力;提高轴压比对构件承载力有利,但过高的轴压比对节点延性不利,建议轴压比取0.3~0.5;采用弹性节点模拟比采用刚性节点的模拟有更好的精度。In order to study the seismic performance of RC fabricated joint and HPFRCC joint,a pseudo-static test is carried out.According to the experiments and OpenSees calculation,the influence of axial compression ratio and calculation model is analyzed.The result shows that under low-cycle reciprocating action,the simulation and test results are in good agreement.HPFRCC can improve the shear capacity of the core area of the node and the energy consumption capacity of the node.Increasing the axial compression ratio is beneficial to the bearing capacity of the component,but an excessively high axial compression ratio is not good for the ductility of the joint.It is recommended that the axial compression ratio be 0.3~0.5.The simulation with elastic nodes has better accuracy than the simulation with rigid nodes.

关 键 词：高性能纤维增强水泥基复合材料 装配式节点 抗震性能 数值模拟 轴压比 

分 类 号：TU528.572[建筑科学—建筑技术科学]