内埋空间钢构架圆形钢管混凝土柱轴压性能分析  

Analysis of axial behavior of circular steel tubular concrete columns filled spatial steel frame

作　　者：王梨燕 唐兴荣[1] 杨静明 陆国琦 WANG Li-yan;TANG Xing-rong;YANG Jing-ming;LU Guo-qi(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 205011,China;Suzhou Huazao Architecture Design Co.,Ltd,Suzhou 215021,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011 [2]中衡.苏州华造建筑设计有限公司,江苏苏州215021

出　　处：《广西大学学报（自然科学版）》2018年第4期1386-1395,共10页Journal of Guangxi University（Natural Science Edition）

基　　金：建设部科技研究项目(99-031-2)

摘　　要：为了改善圆形钢管混凝土柱的受力性能,在圆钢管混凝土中内埋空间钢构架形成一种新型的双约束混凝土组合柱。为了进一步探究这种双约束组合柱的轴压性能,在试验研究的基础上,采用ABAQUS软件建立内埋空间钢构架圆形钢管混凝土轴压短柱非线性有限元模型,其计算值与试验值吻合较好。在此基础上,以影响内埋空间钢构架圆形钢管混凝土短柱轴压性能的因素为参数,对这种新型组合柱的轴压性能进行模拟分析。分析表明:内埋空间钢构架圆钢管混凝土短柱有较高的承载力和变形能力,外部钢管套箍指标和内部空间钢构架的约束影响系数是影响这种新型组合柱轴压性能的主要因素。In order to improve the mechanical behaviors of concrete filled circular steel tubular concrete columns,a spatial steel frame was buried in the column,and a new type of double confined concrete composite column was formed.In order to explore the axial behavior of this double confined concrete composite column,a nonlinear finite element model for the column was established by using ABAQUS,and the calculated results agree well with the experimental results.On this basis,taking the factors influencing the axially compressive behavior of the new composite columns as parameters,the axially compressive behavior of the new composite columns is simulated and analyzed.It is shown that the composite columns have high bearing capacity and deformability.And the hoop index of the external steel tube and the confining coefficient of the inner spatial steel frame are the main factors affecting the axial behavior of the composite columns.

关 键 词：圆形钢管混凝土柱 空间钢构架混凝土 轴压性能 有限元分析 

分 类 号：TU375.3[建筑科学—结构工程]