全预制装配式混凝土框架结构新型梁柱节点研究  

Study on New Beam-column Joints of Fully Prefabricated Concrete Frame Structures

作　　者：曹永红[1] 金豪 蒋豪 CAO Yonghong;JIN Hao;JIANG Hao(School of Civil Engineering,Chongqing University,Chongqing 400045,China)

机构地区：[1]重庆大学土木工程学院,重庆400045

出　　处：《施工技术》2020年第5期29-33,84,共6页Construction Technology

基　　金：“十三五”国家重点研发计划(2016YFC0701902)。

摘　　要：在套筒灌浆连接、螺栓连接和混合连接的基础上,提出一种新型全预制装配式混凝土框架结构梁柱节点,并利用ABAQUS软件建立了4个不同轴压比下的现浇梁柱节点模型和4个新型节点模型。为了验证新型节点的可靠性,对不同轴压比下的现浇节点和新型节点进行梁端加载低周往复数值模拟,并对各模型的抗震性能影响因素进行了对比分析。研究表明,在相同轴压比下,梁端加载的新型节点的承载力略高于现浇节点、延性性能高于现浇节点、耗能能力低于现浇节点、刚度退化比现浇节点慢。Based on the sleeve grouting connection,bolting connection and hybrid connection,a new type of prefabricated concrete frame structure beam-column joint is proposed,and the cast-in-situ beamcolumn joint models with four different axial compression ratios and four new beam-column joint models are established by ABAQUS software.In order to verify the reliability of the new joint,the joint models and the four new joint models are used to simulate the low-cycle reciprocating of the cast-in-place joints and new joints under different axial compression ratios,and the seismic performance of every model.A comparative analysis is conducted.The research shows that the bearing capacity of the new beam loaded at the same axial compression ratio is slightly higher than that of the cast-in-situ joint,the ductility is higher than that of the cast-in-situ joint,the energy consumption is lower than that of the cast-in-situ joint,and the stiffness degradation is slower than that of the cast-in-situ joint.

关 键 词：预制装配式建筑 混合连接 梁柱节点 数值模拟 抗震性能 

分 类 号：TU37[建筑科学—结构工程]