[1]傅中秋,吉伯海,胡正清,等.钢管轻集料混凝土长柱轴压性能试验研究[J].东南大学学报(自然科学版),2009,39(3):546-551.[doi:10.3969/j.issn.1001-0505.2009.03.024]
 Fu Zhongqiu,Ji Bohai,Hu Zhengqing,et al.Experimental study on behavior of lightweight aggregate concrete-filled steel tube long columns under axial compression[J].Journal of Southeast University (Natural Science Edition),2009,39(3):546-551.[doi:10.3969/j.issn.1001-0505.2009.03.024]
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钢管轻集料混凝土长柱轴压性能试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第3期
页码:
546-551
栏目:
土木工程
出版日期:
2009-05-20

文章信息/Info

Title:
Experimental study on behavior of lightweight aggregate concrete-filled steel tube long columns under axial compression
作者:
傅中秋12 吉伯海12 胡正清12 高建明3
1 河海大学土木工程学院,南京 210098; 2 水资源高效利用及工程安全国家工程研究中心,南京 210098; 3 东南大学材料科学与工程学院,南京 210096
Author(s):
Fu Zhongqiu12 Ji Bohai12 Hu Zhengqing12 Gao Jianming3
1 College of Civil Engineering, Hohai University, Nanjing 210098,China
2 National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing 210098,China
3 School of Material Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
钢管轻集料混凝士 轴压试验 长细比 稳定系数
Keywords:
lightweight aggregate concrete-filled steel tube axial compression test slenderness ratio stability factor
分类号:
TU398
DOI:
10.3969/j.issn.1001-0505.2009.03.024
摘要:
对18根不同长细比和含钢率的钢管轻集料混凝土长柱进行轴压试验,研究了钢管轻集料混凝土长柱在轴心压力下的受力性能,并与钢管普通混凝土进行了对比.结果表明:钢管轻集料混凝土长柱破坏属于整体失稳破坏,长细比越大,其承载力和稳定系数越低,加载过程中由全截面受压转为一侧受拉一侧受压,最终因为挠度过大而破坏; 相同长细比情况下,钢管轻集料混凝土构件的承载力随含钢率增大而增大; 核心混凝土性能对钢管混凝土的界限长细比有一定影响,钢管轻集料混凝土的界限长细比低于钢管普通混凝土; 钢管轻集料混凝土的稳定系数要高于长细比相同的钢管普通混凝土.
Abstract:
Based on axial compression tests of 18 lightweight aggregate concrete-filled steel tube(LACFST)long columns,the behavior of LACFST long columns was studied and compared with that of normal CFST. The results demonstrate that the failure of LACFST long columns belong to general instability failure. The larger the slenderness ratio, the lower the bearing capacity and stability factor. In the loading process, the stress distribution changes from compression on the whole section to compression on one side and tension on the other side. With the same slenderness ratio, the bearing capacity of the specimen increases with the steel ratio. The core concrete performance influences the boundary slenderness ratio and stability factor of LACFST. It is proved that the boundary slenderness ratio of LACFST is lower than that of normal CFST, and the stability factor of LACFST is larger than that of normal CFST.

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备注/Memo

备注/Memo:
作者简介: 傅中秋(1983—),男,博士生; 吉伯海(联系人),男,博士,教授,博士生导师,bhji@hhu.edu.cn.
基金项目: 江苏省自然科学基金资助项目(BK2008359)、江苏省“六大人才高峰”2007资助项目(B类07-F-011).
引文格式: 傅中秋,吉伯海,胡正清,等.钢管轻集料混凝土长柱轴压性能试验研究[J].东南大学学报:自然科学版,2009,39(3):546-551. [doi:10.3969/j.issn.1001-0505.2009.03.024]
更新日期/Last Update: 2009-05-20