装配式混凝土型钢削弱梁柱连接抗震性能的参数影响  

Influence of Parameters on Seismic Performance of Prefabricated Concrete Reduced Beam Section

作　　者：沈华[1,3] 张爱环 马锋[2] 许茜 王庆华[1,3] SHEN Hua;ZHANG Ai-huan;MA Feng;XU Qian;WANG Qing-hua(School of Civil Engineering,Nantong Vocational University,Nantong 226007,China;General Manager’s Office,Nantong 8th Construction Group Co.,Ltd.,Nantong 226002,China;Building Industrialization Research Room,Jiangsu Research and Development Center of AI and BIM Integration Construction Engineering,Nantong 226007,China)

机构地区：[1]南通职业大学建筑工程学院,江苏南通226007 [2]南通八建集团有限公司总经理室,江苏南通226002 [3]江苏省AI与BIM融合式智能建造工程技术研究开发中心建筑工业化研究室,江苏南通226007

出　　处：《南通职业大学学报》2024年第4期87-94,共8页Journal of Nantong Vocational University

基　　金：江苏省产学研合作项目(BY20230331);南通青年科技人才创新专项(JC12022042);南通市226高层次人才培养工程资助项目(2022Ⅱ282);南通市住建局项目(2023KJ16);南通职业大学重点自科项目(22ZK02)。

摘　　要：为探究相关参数对装配式混凝土型钢削弱连接抗震性能的影响,基于OpenSEES平台建立了节点的数值分析模型,进行比较试验和数值分析,验证数值分析模型的有效性。进一步采用数值分析模型,分析了轴压比、型钢长度比、削弱梁截面(reduced beam section,RBS)削弱比和型钢规格等参数对节点抗震性能的影响。结果表明:轴压比增加对弹性承载力影响较小,弹塑性承载力则显著降低;型钢长度比增大引起的RBS位置改变对弹性承载力的影响很小,但塑性铰的外移导致弹塑性承载力明显增大;RBS削弱比的增大使得节点弹性和弹塑性承载力均呈下降趋势,弹塑性承载力下降更为显著;截面积越大,其弹性承载力和弹塑性承载力相对越高,且更易实现型钢与钢筋混凝土截面的力传递。Based on OpenSEES platform,the numerical analysis model for the reduced beam section is established to compare the results of numerical analysis with those of experiment,and verify the effectiveness of the established numerical model.The model is further used to examine the influence of the parameters on seismic performance such as axial compression ratio,length ratio of steel to beam,reduction ratio of RBS(Reduced Beam Section)and steel specification.The results show that the increase of axial compression has little effect on elastic bearing capacity,but causes a significant decrease of elastoplastic bearing capacity;the increase of length ratio shifts the position of RBS,which exerts little effect on elastic bearing capacity,but the elastoplastic bearing capacity increases dramatically due to the outward movement of plastic hinge.With the increase of sectional reduction ratio of RBS,both elastic and elastoplastic bearing capacity tend to decrease,especially elastoplastic bearing capacity,which decreases sharply.The larger the section area,the higher the elastic bearing capacity and elastic-plastic bearing capacity,and the easier for the force transmission between the section steel and reinforced concrete section.

关 键 词：抗震性能 装配式结构 型钢削弱梁柱连接 参数化研究 数值分析 

分 类 号：TU375[建筑科学—结构工程]