外方内圆钢管混凝土短柱轴压性能试验研究  

EXPERIMENTAL STUDY OF AXIAL COMPRESSIVE BEHAVIOR ON CONCRETE-FILLED DOUBLE SKIN STEEL TUBULAR SHORT COLUMNS

作　　者：张艳刚 王继升 丛术平[3] 赵文博[4] ZHANG Yangang;WANG Jisheng;CONG Shuping;ZHAO Wenbo(Taiyuan Institute of Technology,Shanxi Taiyuan 030008,China;Qingdao Tengyuan Design Firm,Shandong Qingdao 266100,China;Shandong University of Science and Technology,Shandong Qingdao 266590,China;Hohai University,Nanjing 210024,China)

机构地区：[1]太原工业学院,山西太原030008 [2]青岛腾远设计事务所有限公司,山东青岛266100 [3]山东科技大学,山东青岛266590 [4]河海大学,南京210024

出　　处：《低温建筑技术》2024年第1期55-59,共5页Low Temperature Architecture Technology

摘　　要：研究采用轴压试验方法,探究外方内圆钢管混凝土短柱的轴压力学性能。通过设计6根含有相同钢率的外方内圆钢管混凝土短柱,并与2根方钢管混凝土短柱对比分析,发现外方内圆钢管混凝土短柱的极限承载力较方钢管小,但剩余承载力更高。在相同含钢率条件下,增大内钢管直径有助于提高承载力;而在相同内、外钢管直径条件下,增大内钢管面积则减小极限承载力。通过非线性有限元分析验证试验结果,为深化理解外方内圆钢管混凝土短柱性能提供实证支持。This study employs an axial compression test method to investigate the axial compressive mechanical properties of square outer-inner circular steel tube concrete short columns.By designing six short columns with iden⁃tical steel ratios and conducting a comparative analysis with two square steel tube concrete short columns,it is ob⁃served that the ultimate bearing capacity of outer-inner circular steel tube concrete short columns is smaller than that of square steel tube columns,but their residual bearing capacity is higher.Under equivalent steel ratio condi⁃tions,increasing the inner steel tube diameter enhances the bearing capacity,while enlarging the inner steel tube ar⁃ea reduces the ultimate bearing capacity under the same inner and outer steel tube diameter conditions.Nonlinear fi⁃nite element analysis is conducted to validate experimental results,providing empirical support for a deeper under⁃standing of the performance of square outer-inner circular steel tube concrete short columns.

关 键 词：外方内圆钢管混凝土 轴心受压试验 极限承载力 

分 类 号：TU375.3[建筑科学—结构工程]