带钢端头的装配式高强钢筋混凝土梁柱中节点受力性能研究  

Research on Mechanical Properties Performance of Prefabricated High-Strength Steel Reinforced Concrete Beam-Column Joints with Steel Ends

作　　者：张晓巍 戎贤 杨洪渭 张健新 ZHANG Xiaowei;RONG Xian;YANG Hongwei;ZHANG Jianxin(School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China;Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China)

机构地区：[1]河北工业大学土木与交通学院,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》2023年第11期110-116,共7页Industrial Construction

基　　金：天津市自然科学基金项目(20JCZDJC00370);河北省自然科学基金项目(E2020202134)。

摘　　要：通过循环反复加载试验研究了3个带钢端头的新型装配式高强钢筋混凝土梁柱中节点的受力性能,分析该高强钢筋混凝土梁柱中节点的破坏特征、弯矩-转角、核心区剪力-转角、强度退化以及应变规律。根据试验结果发现,设计的新型装配式高强钢筋混凝土梁柱节点均呈现出预期设计的节点核心区剪切破坏。预埋钢连接件与钢筋混凝土梁之间的连接可靠,带钢端头装配式高强钢筋混凝土梁柱节点中能够有效传递内力,显现出较高的转动能力和较平缓的强度退化,节点受力性能良好。钢端头中横隔板和设置的腹板受力充分,可与箍筋和混凝土分担受力。3个被测试构件中水平连接板间设置腹板且装配部位后浇混凝土的节点受力性能最佳。Three new fabricated high-strength reinforced concrete beam-column joints with steel ends were subjected to quasi-static loading tests to investigate their mechanical properties.The failure characteristics moment-rotation hysteresis curves,sheared-rotation force-deformation skeleton curves in core area,strength degradation,and strain laws of the joints were analyzed.The test results showed that the proposed new prefabricated high-strength reinforced concrete beam-column joints occurred the expected shear damage in the core area.The connection between the embedded steel connectors and reinforced concrete beams was reliable.The prefabricated high-strength reinforced concrete beam-column joints with steel ends could effectively transfer internal forces,showing high rotation capacity and gentle strength degradation.Thus the joints showed a good mechanical properties.force performance.The spacer and the web set in the steel end could be stressed with the stirrups and concrete.The joint with webs between horizontal connecting plates and post-cast concrete in the assembly area exhibited the best mechanical properties performance among the three specimens.

关 键 词：装配式梁柱节点 钢端头 受力性能 HRB600钢筋 循环反复荷载 

分 类 号：TU375[建筑科学—结构工程]