摘要
为研究装配式高强钢筋混凝土梁柱节点的抗震性能,设计1个普通现浇高强钢筋混凝土梁柱节点和2个采用钢节点连接装配式高强钢筋混凝土梁柱节点进行低周往复加载试验,比较了新型装配式高强钢筋梁柱节点的破坏特性、滞回性能和刚度退化等抗震性能指标。研究表明:与普通现浇混凝土节点相比,采用对拉螺栓连接和内设十字隔板的方钢管连接的两种装配式高强钢筋混凝土梁柱节点均具有更优良的抗震性能,滞回曲线更为饱满,耗能能力得到提高,刚度退化更为缓慢。预制柱内采用内设十字隔板的方钢管连接的方式能更好地改善节点的破坏形态,提高承载力,综合抗震性能最优。
In order to investigate the seismic performance of prefabricated high strength reinforced concrete beam-column joints, one ordinary cast-in-place high strength reinforced concrete beam-column joint and two prefabricated high strength reinforced concrete beam-column joints connected by steel node are designed, which are tested under the low cyclic loading, and the seismic performance indexes of the new type of prefabricated high-strength reinforced concrete beam-column joints are contrasted, such as failure characteristic, hysteresis behavior and stiffness degradation. The research shows that compared with ordinary cast-in-place concrete joints, the two kinds of prefabricated high strength reinforced concrete beam-column joints connected by bolts and square steel tubes with cross baffles respectively have more excellent seismic performance, fuller hysteretic curve, higher energy dissipation ability and slower stiffness degradation. In addition, the joints connected by square steel pipes with cross baffles in the precast columns can better improve the failure mode of joints, enhance the bearing capacity and achieve the best comprehensive seismic performance.
作者
李艳艳
王梦瑶
李雨辰
Li Yanyan;Wang Mengyao;Li Yuchen(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China)
出处
《建筑科学》
CSCD
北大核心
2022年第11期90-96,共7页
Building Science
基金
河北省自然科学基金(E2020202134)
河北省重点研发计划项目(22374501D)
河北省建设科技研究项目(2022-2130)。
关键词
装配式混凝土
梁柱节点
抗震性能
高强钢筋
prefabricated concrete
beam-column joint
seismic behavior
high-strength steel bar
