工程力学 ›› 2019, Vol. 36 ›› Issue (S1): 298-305.doi: 10.6052/j.issn.1000-4750.2018.05.S065

• 土木工程学科 • 上一篇    下一篇

不锈钢管混凝土短柱轴压承载力试验研究

代鹏1, 杨璐1, 卫璇1, 周宇航1,2   

  1. 1. 北京工业大学建筑工程学院, 北京 100124;
    2. 北京电力工程有限公司, 北京 100070
  • 收稿日期:2018-01-31 修回日期:2018-10-19 出版日期:2019-06-18 发布日期:2019-06-18
  • 通讯作者: 杨璐(1982-),男,湖北人,教授,博士,博导,主要从事钢结构及施工技术研究(E-mail:lyang@bjut.edu.cn). E-mail:lyang@bjut.edu.cn
  • 作者简介:代鹏(1994-),男,安徽人,硕士生,主要从事钢结构研究(E-mail:daipengfo@163.com);卫璇(1992-),男,河南人,硕士生,主要从事钢结构研究(E-mail:weiyxmm@163.com);周宇航(1991-),男,北京人,硕士生,主要从事钢结构研究(E-mail:452216984@qq.com).
  • 基金资助:
    北京市科技新星项目(2016117);北京市优秀人才培养资助(拔尖自然科学)项目(2017000026833ZK26)

EXPERIMENTAL STUDIES ON THE BEHAVIOR AND CAPACITY OF CONCRETE FILLED STAINLESS STEEL TUBE SHORT COLUMNS

DAI Peng1, YANG Lu1, WEI Xuan1, ZHOU Yu-hang1,2   

  1. 1. The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;
    2. Beijing Electric Power Engineering Co., Ltd., Beijing 100070, China
  • Received:2018-01-31 Revised:2018-10-19 Online:2019-06-18 Published:2019-06-18

摘要: 对9根奥氏体型和9根双相型不锈钢管混凝土短柱进行轴压试验,测得了短柱在轴压作用下的极限荷载、纵向应变和环向应变等,重点考察了钢管壁厚和混凝土强度对短柱承载性能的影响,并参考普通钢管混凝土设计规程欧洲规程(Eurocode 4)、美国规程(ACI 318-99)、日本规程(AIJ-CFT),我国相关规程DBJ 13-51―2003、DL/T5085―1999和CECS 28:2012计算了不锈钢管混凝土短柱的承载力并进行对比分析。结果表明,不锈钢管混凝土轴压短柱在核心混凝土强度等级相同的情况下,构件承载力随钢管壁厚的增加而增大,混凝土强度对其有影响。6种规程在计算不锈钢管混凝土短柱承载力时偏于安全,其中CECS 28:2012更接近试验结果,该文成果对不锈钢管混凝土短柱承载力的设计有一定的参考意义。

关键词: 不锈钢管混凝土, 短柱, 轴压试验, 承载性能, 设计规程

Abstract: The loading capacity of nine concrete filled austenitic stainless-steel tube short columns and nine concrete filled duplex stainless-steel tube short columns for their axial compression tests were investigated. The ultimate load-bearing capacity, longitudinal strains, and circumferential strains were tested, and emphatically investigated the influence of bearing capacity of the short columns. In addition, the design codes of common concrete filled steel tubes for European Code (Eurocode 4), American Code (ACI 318-99), Japanese Code (AIJ-CFT), Chinese Code DBJ 13-51-2003, DL/T 5085-1999 and CECS 28:2012 were referred to calculating the bearing capacity of concrete filled stainless steel tube short columns, and analyzed the differences between tests and calculating results. The results indicate that:under the condition of the same strength of core concrete, the bearing capacity of the member increases with the increase of steel tube wall thickness under the same strength grade of core concrete, and the strength of concrete also has an effect on the capacity. The calculating results of the six codes for concrete filled stainless steel tube short columns are rather safe. The result of CECS 28:2012 code is closer to that of the test. Thusly, the research results can provide a reference for the design of concrete filled stainless steel tube short columns.

Key words: concrete filled stainless steel tube, short columns, axial compression test, loading capacity, design codes

中图分类号: 

  • TU391
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