方中空夹层钢管陶瓷再生混凝土柱偏压力学性能研究  

Research on Behavior of Recycled Ceramic Aggregate Concrete-Filled Double Skin Square Steel Tubular Columns Under Eccentric Compression

作　　者：黄宏[1,2] 王恺 胡文斌 杨超 张立卿 左勇 HUANG Hong;WANG Kai;HU Wenbin;YANG Chao;ZHANG Liqing;ZUO Yong(School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China;School of Civil Engineering and Architecture,Yangzhou Polytechnic Institute,Yangzhou 225127,China)

机构地区：[1]华东交通大学土木建筑学院,南昌昌330013 [2]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,南昌330013 [3]扬州工业职业技术学院建筑工程学院,江苏扬州225127

出　　处：《建筑钢结构进展》2023年第4期37-45,共9页Progress in Steel Building Structures

基　　金：国家自然科学基金(51868020);江西省自然科学基金(20192ACBL21002);江西省教育厅科学技术研究重点项目(GJJ210649)。

摘　　要：为研究粗骨料类型、空心率、长细比和偏心距对方中空夹层钢管陶瓷再生混凝土柱偏压力学性能的影响,进行了16根试件的偏压试验,其中粗骨料类型分别为废弃陶瓷和天然碎石。试验结果表明:所有试件均表现为弹塑性失稳破坏;试件的极限承载力和抗弯刚度随长细比和偏心距的增大而降低,其中中空夹层试件的极限承载力高于实心试件的相应值;陶瓷再生混凝土试件展现出了较好的延性和变形能力,其极限承载力与普通混凝土试件接近。使用有限元软件对试验进行模拟,模拟得到的荷载-跨中挠度曲线整体与试验曲线接近。采用T/CCES 7—2020和DB 36/J001—2007分别对中空夹层试件和实心试件极限承载力进行计算,计算结果接近试验值。16 specimens are designed in order to study the effect of coarse aggregate type,hollow section ratio,slenderness ratio and load eccentricity on the recycled ceramic aggregate concrete-filled double skin square steel tubular columns under eccentric compression.The coarse aggregate types are waste ceramic and crushed stone,respectively.The test results indicate that specimens under eccentric compression are characterized by the elastic-plastic instability failure.The ultimate bearing capacity and flexural rigidity of specimens decrease with the increase of slenderness ratio and load eccentricity.The ultimate bearing capacity of concrete-filled double skin steel tubular specimens is higher than that of ordinary concrete-filled steel tubular specimens.The recycled ceramic concrete specimens exhibit a good ductility.The ultimate bearing capacity of recycled ceramic concrete specimens is close to that of ordinary concrete specimens.The experiment is simulated by using finite element method,which shows that the finite element simulation of loaddeflection curves on the mid-span agree well with the experimental results.T/CCES 7-2020 and DB 36/J001-2007 are used to calculate the ultimate bearing capacity of double skin concrete-filled steel tubular specimens and ordinary concrete-filled steel tubular specimens respectively,which is close to the experimental results.

关 键 词：方中空夹层钢管混凝土 陶瓷再生混凝土 偏心受压性能 弹塑性失稳破坏 有限元模拟 

分 类 号：TU398[建筑科学—结构工程]