预制管混凝土柱-梁中节点承载力分析
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（1 天津大学建筑工程学院，天津 300072； 2 天津大学滨海土木工程结构与安全教育部重点实验室，天津 300072）
［摘要］为了得到受力性能最好的预制管混凝土柱-梁中节点结构形式，对其进行了四种形式的初步设计，并基于ABAQUS软件建立了各节点形式的有限元模型，对四种预制管混凝土柱-梁中节点及普通现浇柱-梁中节点进行了竖向和水平向承载力分析，分析中考虑了各柱-梁中节点形式的应力变化情况、破坏模式和承载力的异同。研究表明：梁纵筋贯穿式中节点、柱整体贯穿环梁式中节点和环梁整体贯穿立柱式中节点在竖向荷载作用下满足“强节点弱构件”的原则，且其受拉区在水平荷载作用下没有发生节点贯通。［关键词］预制管混凝土柱; 柱-梁中节点; 承载力中图分类号：TU375.3 文献标识码：A 文章编号：1002-848X(2016)10-0080-07
Analysis of bearing capacity of beam-column internal joints for precast-concrete tube column structureDing Hongyan1,2, Guo Yaohua1, Zhang Puyang1,2, Yang Yifei1(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Key Laboratory of Coast Civil Structure Safety of China Ministry of Education (TianjinUniversity), Tianjin 300072, China)Abstract: In order to obtain the best mechanism performance of beam-column internal joints for precast concrete tube column, preliminary designs of four structural forms were carried out on beam-column internal joints. Finite element models of all joint forms were established based on the ABAQUS software. Vertical and horizontal bearing capacities analyses were carried out on four beam-column internal joints for precast concrete tube column and one ordinary cast-in-situ beam-column internal joint. The differences of stress variation, compressive failure mode and bearing capacity of the joints were considered in the analysis. Research shows that three forms of joints satisfy the principle of “strong joint and weak component” under the vertical loads, including beam longitudinal reinforcement penetration internal joint, internal joint with integrated column penetrating ring beam, and internal joint with integrated ring beam penetrating column. And there is no occurrence of the joint penetration in tension zone under the horizontal loads.Keywords: precast concrete tube column; beam-column internal joint; bearing capacity
作者简介：丁红岩，教授，博士，博士生导师， Email: dhy_td@163.com。
