三层单跨装配式预应力混凝土框架节点的抗震性能研究  

Study on Seismic Behavior of Prestressing Prefabricated Concrete Frame Joints with Three Stories and Single Span

作　　者：胡珊珊[1] 杨晓波[2] HU Shan-shan;YANG Xiao-bo(College of City Construction, Lu'an Vocational Technical College, 237158, Lu 'an, Anhui, China;College of Civil and Hydraulic Engineering, 233030, Bengbu, Anhui, China)

机构地区：[1]六安职业技术学院城市建设学院,安徽省六安市237158 [2]蚌埠学院土木与水利工程学院,安徽省蚌埠市233030

出　　处：《河北水利电力学院学报》2021年第1期41-45,共5页Journal of Hebei University Of Water Resources And Electric Engineering

基　　金：安徽省质量工程项目:示范实验实训中心——装饰技术实训中心(2017sxzx51);安徽省质量工程项目:土木工程专业综合改革试点(2016zy052)。

摘　　要：在我国建筑工业化政策的引导下,如何提高预制构件节点连接处的装配性能是建筑业共同关注的问题。通过对一榀三层单跨装配式预应力混凝土框架进行拟静力抗震试验,了解了试验框架处于极限破坏状态时各节点的裂缝及损伤情况,计算分析了各节点的抗裂程度,根据荷载(位移)-剪切角滞回曲线讨论了节点核心区的变形特征和剪力传递机理,并结合ANSYS有限元软件进行了非线性模拟。研究结果表明,装配式预应力混凝土框架的破坏出现在梁端,而节点核心区在双向应力状态下并未发生破坏。整体结构具有较好的延性,节点核心区有较强的抗裂和抗变形能力,符合“强节点弱构件”的抗震设计要求。Under the guidance of China's construction industrialization policy,how to improve the assembly performance of prefabricated component joints is a common concern of the construction industry.Based on the quasi-static seismic test of a three story single span prefabricated prestressed concrete frame,the crack and damage of each joint in the ultimate failure state of the test frame are understood,and the crack resistance degree of each joint is calculated and analyzed.According to the load(displacement)-shear angle hysteretic curve,the deformation characteristics and shear transfer mechanism of the joint core area are discussed,and the nonlinear simulation is carried out by using the ANSYS finite element software.The research results show that the failure of prefabricated prestressed concrete frame occurs at the beam end,while the core zone of the joint does not occur under the condition of bidirectional stress.The whole structure has good ductility,and the core area of joints has strong anti-crack and anti-deformation ability,which meets the seismic design requirements of“strong joints and weak members”.

关 键 词：装配式 预应力 混凝土 节点 拟静力 

分 类 号：TU378.4[建筑科学—结构工程] TU352.11