摘要
为研究节点预制、构件预制、构件后浇UHPC连接的装配式混凝土框架的抗震性能,进行了一榀缩尺比例为1∶2的两层两跨框架试件的拟静力试验。分析了试件的破坏过程、滞回曲线、骨架曲线、位移延性、刚度退化和耗能能力。试验结果表明,试件破坏机制为混合破坏机制,节点核心区仅有少量细微裂缝,预制装配式框架实现了强柱弱梁、强节点弱构件的设计目标。试件具有较好的承载能力、位移变形能力和耗能能力,试件顶点正负向极限位移角分别为1/34和1/36,满足大震不倒的位移角限值要求,说明这种新型装配式框架具有可靠的抗震性能。
To study the seismic performance of precast concrete frames with precast joints-precast members connected by UHPC,quasi-static tests on a two-story,two-span frame specimen with a scale ratio of 1∶2 were completed.The failure process,hysteresis curve,skeleton curve,displacement ductility,stiffness degradation and energy dissipation capacity of the specimen were analyzed.The test results show that the failure mechanism of the specimen is a mixed failure mechanism,and there are only a few fine cracks in the core area of the joint.The prefabricated frame realizes the design goal of strong column weak beam and strong joint weak member.The specimen has good bearing capacity,displacement deformation ability and energy dissipation ability.The positive and negative extreme displacement angles of the specimen are 1/34 and 1/36 respectively.It meets the requirements of the displacement angle limit for large earthquakes.These demonstrate that this new fabricated frame has good seismic performance.
作者
郑七振
陈威钢
龙莉波
马跃强
陈刚
ZHENG Qizhen;CHEN Weigang;LONG Libo;MA Yueqiang;CHEN Gang(School of Envoriment and Architecture,University of Shanghai for Science and Technology,Shanghai 20093,China;Shanghai Construction No.2(Group)Co.,Ltd.,Shanghai 200080,China)
出处
《上海理工大学学报》
CAS
CSCD
北大核心
2019年第6期584-590,共7页
Journal of University of Shanghai For Science and Technology
基金
上海市科委科研计划项目（17DZ1203503）
