| 内圆外方复合钢管混凝土短柱轴压承载力试验研究 |
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| 引用本文： | 张扬,钱稼茹,纪晓东,曹万林.内圆外方复合钢管混凝土短柱轴压承载力试验研究[J].世界地震工程,2011,27(3). |
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| 作者姓名： | 张扬 钱稼茹 纪晓东 曹万林 |
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| 作者单位： | 1. 清华大学土木工程系结构安全与耐久教育部重点试验室,北京,100084
2. 北京工业大学建筑工程学院,北京,100124 |
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| 基金项目： | 北京市科技计划重大项目(D09050600370000); 北京市教委科技计划重点项目(KZ200910005008); 清华大学自主科研计划项目(20101081766) |
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| 摘 要： | 为研究内圆外方复合钢管混凝土柱的轴压承载力,完成了10个试件的轴心受压试验。试验结果表明:达到峰值承载力时,方钢管纵向已屈服、横向尚未屈服;试件的破坏形态为方钢管向外鼓曲、沿纵向局部撕裂,方钢管与圆钢管之间的混凝土已经酥松、局部压碎;大部分试件即使纵向平均压应变达到0.11,尚能承担不小于其峰值承载力70%的轴力;压缩刚度的计算值平均为实测值的83.6%。采用钢管仅提供轴压承载力、不提供横向约束的假定计算得到的试件的轴压承载力,与试验结果符合最好。
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| 关 键 词： | 内圆外方复合钢管混凝土短柱 轴心受压试验 约束 轴压承载力 |
Experimental study on axial compressive strength of concrete filled composite steel tube short columns |
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| ZHANG Yang,QIAN Jiaru,JI Xiaodong,CAO Wanlin.Experimental study on axial compressive strength of concrete filled composite steel tube short columns[J].World Information On Earthquake Engineering,2011,27(3). |
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| Authors: | ZHANG Yang QIAN Jiaru JI Xiaodong CAO Wanlin |
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| Institution: | ZHANG Yang1,QIAN Jiaru1,JI Xiaodong1,CAO Wanlin2 (1.Department of Civil Engineering,Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Tsinghua University,Beijing 100084,China,2.College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | To study the axial compressive strength of the concrete filled composite steel tube short column which is the concrete filled square steel tube reinforced with a central circular steel tube,10 specimens were tested under the axial compressive loading.Test results indicated that at the peak axial load the square steel tube had yielded in the vertical direction and did not yield in the lateral direction;the specimens failed in local buckling and tearing of square steel tube,crushing of concrete between the sq... |
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| Keywords: | concrete filled composite steel tube short column axial compressive loading test confinement compressive strength |
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