基于ABAQUS大偏心梁柱节点损伤分析  

Analysis of Beam-column Joints with Large Eccentricity

作　　者：石海丽 姬若鹏 肖冠湘 刘源[3] 张顺强 李亚军 SHI Haili;JI Ruopeng;XIAO Guanxiang;LIU Yuan;ZHANG Shunqiang;LI Yajun(China United Northwest Institute for Engineering Design and Research Corporation,Xi′an,Shaanxi 710077,China;Zhejiang Architectural Design and Research Institute,Hangzhou,Zhejiang 310001,China;China Northwest Architectural Design and Research Institute Co.,Ltd.,Xi′an,Shaanxi 710018,China;Shaanxi Sanqin Construction Drawing Examination Co.,Ltd.,Xi′an,Shaanxi 710000,China)

机构地区：[1]中联西北工程设计研究院有限公司,陕西西安710077 [2]浙江省建筑设计研究院,浙江杭州310001 [3]中国建筑西北设计研究院有限公司,陕西西安710018 [4]陕西三秦施工图审查有限公司,陕西西安710000

出　　处：《水利与建筑工程学报》2024年第3期167-173,共7页Journal of Water Resources and Architectural Engineering

基　　金：中联西北工程设计研究院有限公司科研项目(2022KY-09)。

摘　　要：为了研究大偏心梁柱节点损伤程度,结合某高层建筑框架剪力墙梁柱大偏心节点情况,研究梁柱偏心对节点核心区抗剪承载力的不利影响。通过节点精细化有限元模型,定量分析梁柱节点偏心所产生的附加扭矩、附加弯矩,以及由于梁柱偏心对节点核心区抗剪承载力的不利影响。分析结果表明,对于典型的强柱弱梁的节点体系(即柱子截面较大而梁截面较小的情况),在不采用梁端水平加腋的构造措施的条件下,偏心节点核心区的混凝土最大应力值仍小于节点核心区材料的抗压强度标准值。由于节点核心区周围楼板的存在可在一定程度上承担部分节点核心区由于偏心引起的附加扭矩作用,使柱节点核心区的抗剪会有较大的富余度。Based on the large eccentric joints of a frame shear wall high-rise building,the adverse effects of eccentric joints on the shear capacity of the core joint area were analyzed.Through the refined finite element model of the joint,the additional torque and bending moment of beam-column joint eccentricity and the adverse effect of eccentricity on the shear capacity of the core joint area were quantitatively analyzed.The results indicate that for the typical strong columns and weak beams joint system(large columns and small beam sections),the maximum stress value of concrete in the core area of eccentric joints is still less than the standard compressive strength value of materials in the core area of eccentric joints,even if the structural measures like horizontal haunch at beam ends are not adopted.Furthermore,because the floor around the core joint area mitigated part additional moment resulting from eccentricity,thus the shear resistance of the core area of column joint has a larger surplus.

关 键 词：梁柱大偏心节点 节点核心区抗剪承载力 强柱弱梁 梁端水平加腋 

分 类 号：TU37[建筑科学—结构工程]