新型装配式混凝土框架结构后浇整体式梁柱节点研究

摘要

装配式框架结构以其施工速度快、质量有保证、绿色环保、便于维修以及能够获取大空间的优点,受到越来越多的关注.梁柱节点是影响装配式结构抗震性能的重要因素之一,好的节点不仅需要具有良好的抗震性能,同时还需要具有方便运输和安装等特点.后浇整体式梁柱节点是我国目前应用最广泛的一种节点形式,本文从构件划分以及钢筋连接形式两个方面对其形式进行了阐述,并设计了3种新型装配式框架节点形式.为研究这3种节点形式的抗震性能,本文对4个足尺梁柱节点进行了低周往复试验,通过试验发现,这3种节点在强度和刚度方面能够等同现浇节点.%Precast concrete frame structure has attracted more attention due to the advantages of good quality,rapid construction,low impact on environment and obtaining large space.Beam-column connection is one of the important factors which can influence the seismic performance of the precast concrete structure.A good connection not only needs to have a good seismic performance,but also should be easy to transport and install.The cast-in-situ monolithic beam-column connection is used most widely in China and this kind of connection has been expounded based on the component division and connection of rebar.Three kinds of new precast concrete beamcolumn connections have been designed.In order to study the seismic performance of the three kinds of connections,four full size beamcolumn connections have been tested under low-cyclic loading.It shows that the precast beam-column connections are equivalent to castin-situ connection on strength and stiffness.