不对称混合连接节点的耗能能力模拟及分析

Simulation and Analysis of Energy Dissipation Capacity of Asymmetric Hybrid Connection Nodes

装配式连接节点的力学可靠性是保证装配式结构整体性能的关键,本文以混凝土中节点为研究对象,采用DRAIN-2DX有限元分析软件,分析了三榀不同混合连接节点的装配式框架滞回曲线,分析了不同装配方式下混合连接节点的耗能能力,进一步研究了不对称混合连接的普通钢筋的配筋率和初始无连接长度、预应力筋的初始有效预应力三个关键参数的合理取值,为设计不对称混合连接框架提供了有力参考。

The mechanical reliability of assembly connection nodes is the key to ensuring the overall performance of prefabricated structures.Taking concrete nodes as the research object,the DRAIN-2DX finite element analysis software is used to analyze the hysteresis curves of three different hybrid connection nodes in prefabricated frames.The energy dissipation capacity of hybrid connection nodes under different assembly methods is analyzed.Furthermore,the reasonable values of the reinforcement ratio of ordinary steel bars and the initial unconnected length,as well as the initial effective prestress of prestressed bars in asymmetric hybrid connections are further studied,providing strong reference for the design of asymmetric hybrid connection frames.