一种新型装配式框架边节点抗震性能试验研究

为研究预制梁、预制柱之间连接的抗震性能，设计了一种新型装配整体式钢筋混凝土框架边节点，并完成了1个整浇RC试件和2个纵筋搭接长度不同的装配式PC试件的低周反复载荷试验。研究了其破坏过程、破坏形态、滞回曲线、骨架曲线、位移延性、强度退化及耗能能力等内容。结果表明：装配式试件与整浇试件具有相似的破坏过程，破坏模式为梁端塑性铰区弯曲破坏，节点核心区处于弹性状态，节点整体性能良好，承载能力、初始刚度和耗能能力与整浇试件相当。基于“钢筋直锚短搭接”高效连接技术的装配式框架边节点连接可靠、施工方便、质量可控，具有较好的工程应用价值。

Experimental study on seismic behavior of a new prefabricated frame side joint

In order to study the seismic behavior of the connection between precast beam and precast column, a new type of assembled monolithic reinforced concrete frame structure side joint was designed, and the low cycle repeated load tests of one integral cast-in-place RC specimen and two assembled PC specimens with different lap lengths of longitudinal reinforcement were completed. The failure process, failure mode, hysteretic curve, skeleton curve, displacement ductility, strength degradation and energy dissipation capacity were studied. The results show that the failure process of the fabricated specimens is similar to that of the cast-in-place specimens, and the failure mode is the bending failure in the plastic hinge area of the beam end. The core area of the joint is in an elastic state, and the overall performance of the joint is good. The bearing capacity, initial stiffness and energy dissipation capacity of the fabricated specimens are equivalent to those of the cast-in-place specimens.The fabricated frame side joints based on the efficient connection technology of "rebar straight anchor short lap" are reliable in connection, convenient in construction and controllable in quality, and have good engineering application value.