装配式钢纤维混凝土梁柱中节点滞回性能试验研究  

EXPERIMENTAL RESEARCH ON HYSTERETIC PROPERTIES OF INTERIOR BEAM-COLUMN JOINTS FOR PREFABRICATED CONCRETE FRAMES CAST BY STEEL FIBER CONCRETE

作　　者：戎贤[1,2] 杨洪渭 张健新[1,2] RONG Xian;YANG Hongwei;ZHANG Jianxin(School of Civil Engineering,Hebei University of Technology,Tianjin 300401,China;Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China)

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《工业建筑》2020年第6期67-70,共4页Industrial Construction

基　　金：河北省自然科学基金项目(E2018202290,E2017202278);天津市建委科技项目(HE1863);河北省高层次人才资助项目(B2017003003)。

摘　　要：基于装配式钢纤维混凝土梁柱中节点和同一条件下普通钢筋混凝土中节点的拟静力试验研究,分析对比中节点试件的破坏特征、滞回曲线、骨架曲线、刚度退化和承载力退化等性能指标。研究结果表明:与现浇普通混凝土中节点试件相比,采用新型装配式钢纤维混凝土中节点构件的承载能力和变形能力得到提高,滞回性能得到改善,节点刚度的退化得以延缓,承载力降低系数增加。钢纤维的加入能显著改善节点的破坏形态,有利于结构的抗震。Based on the quasi-static test study of interion beam-column joints for prefabricated concrete frame cast by steel fiber concrete in site and interior beam-column joints cast by ordinary concrete in situ under the same condition,the failure characteristics,hysteretic curve,skeleton curve,stiffness degradation and bearing capacity degradation were analyzed.The results showed that,compared with that of the joints cast ordinary concrete in site,the bearing capacity and deformation capacity of the joints cast by steel fiber concrete in site were improved,the hysteretic performance was significantly improved,and the stiffness degradation of the joints was retarded and the bearing capacity reduction coefficient increased.The addition of steel fiber to the joints could improve the failure mode significantly,which could be conducive to the seismic resistance of the structure.

关 键 词：装配式混凝土中节点 钢纤维 滞回性能 拟静力试验 

分 类 号：TU37[建筑科学—结构工程]