新型装配式混凝土框架中节点抗震性能研究  

Research on seismic performance of joints in new prefabricated concrete frames

作　　者：宋扬 孙立建 江建 白宇航 徐东 SONG Yang;SUN Lijian;JIANG Jian;BAI Yuhang;XU Dong(Shenzhen Tagen Group Co.,Ltd.,Shenzhen 518034,Guangdong,China;Shenzhen SEZ Construction Group Co.,Ltd.,Shenzhen 518034,Guangdong,China;Power China Northwest Engineering Corporation Limited,Xi’an 710065,Shaanxi,China)

机构地区：[1]深圳市天健(集团)股份有限公司,广东深圳518034 [2]深圳市特区建工集团有限公司,广东深圳518034 [3]中国电建集团西北勘测设计研究院有限公司,陕西西安710048

出　　处：《工程建设》2025年第4期27-35,共9页Engineering Construction

摘　　要：为丰富装配式节点设计,提高装配式节点抗震性能,文章设计了一种新型装配式混凝土框架中节点,基于该新型装配式混凝土框架节点的试验,建立装配式节点有限元模型,对其在低周往复水平荷载作用下的非线性行为展开分析。随后,通过分析获取了装配式节点的应力云图、破坏形态、滞回曲线和骨架曲线,并与实际试验结果进行对比,验证了模型的合理性。此外,还对装配式节点进行了扩展参数分析,以探究相关影响规律。结果表明:型钢强度的改变对节点水平承载力和延性性能影响较小;混凝土强度和梁柱线刚度比k的提高可显著提高节点水平承载力,但节点延性性能会降低,合理的梁柱线刚度比可以提高装配式节点的抗震性能。To enrich the design of prefabricated joints and improve their mechanical performance,a new type of prefabricated joint has been designed.Based on the test of the new prefabricated concrete frame joint,the prefabricated joint model is established,and the nonlinear behavior of the prefabricated joint under low cyclic reciprocating horizontal load is analyzed by finite element method.The skeleton curve,stress nephogram,failure process and failure mode of the prefabricated joint are obtained,and compared with the actual test,the rationality of the model is verified,and the extended parameter analysis of the prefabricated joint is carried out to explore its influence law.The results indicate that changes in the strength of steel sections have a relatively small impact on the horizontal bearing capacity and ductility performance of joints;The increase of concrete strength and beam-column stiffness ratio k is beneficial to the horizontal bearing capacity of fabricated joints,but the ductility of joints would be reduced.Reasonable beam-column stiffness ratio can improve the seismic performance of fabricated joints.

关 键 词：装配式结构 框架节点 非线性分析 梁柱线刚度比 有限元分析 

分 类 号：TU398.9[建筑科学—结构工程] TU352.11