預(yù)制管混凝土柱-梁中節(jié)點(diǎn)承載力分析
丁紅巖1,2，郭耀華1，張浦陽(yáng)1,2，楊一飛1
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（1 天津大學(xué)建筑工程學(xué)院，天津 300072； 2 天津大學(xué)濱海土木工程結(jié)構(gòu)與安全教育部重點(diǎn)實(shí)驗(yàn)室，天津 300072）
［摘要］為了得到受力性能最好的預(yù)制管混凝土柱-梁中節(jié)點(diǎn)結(jié)構(gòu)形式，對(duì)其進(jìn)行了四種形式的初步設(shè)計(jì)，并基于ABAQUS軟件建立了各節(jié)點(diǎn)形式的有限元模型，對(duì)四種預(yù)制管混凝土柱-梁中節(jié)點(diǎn)及普通現(xiàn)澆柱-梁中節(jié)點(diǎn)進(jìn)行了豎向和水平向承載力分析，分析中考慮了各柱-梁中節(jié)點(diǎn)形式的應(yīng)力變化情況、破壞模式和承載力的異同。研究表明：梁縱筋貫穿式中節(jié)點(diǎn)、柱整體貫穿環(huán)梁式中節(jié)點(diǎn)和環(huán)梁整體貫穿立柱式中節(jié)點(diǎn)在豎向荷載作用下滿足“強(qiáng)節(jié)點(diǎn)弱構(gòu)件”的原則，且其受拉區(qū)在水平荷載作用下沒(méi)有發(fā)生節(jié)點(diǎn)貫通。［關(guān)鍵詞］預(yù)制管混凝土柱; 柱-梁中節(jié)點(diǎn); 承載力中圖分類號(hào)：TU375.3 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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
作者簡(jiǎn)介：丁紅巖，教授，博士，博士生導(dǎo)師， Email: dhy_td@163.com。
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