CALCULATION OF AXIAL COMPRESSION CAPACITY FOR SRC COLUMNS WITH CIRCLE STEEL TUBE AND ANALYSIS OF RADIUS- THICKNESS RATIO
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摘要: 通过考虑外围混凝土和箍筋对钢管以及核心混凝土的约束作用,根据钢管屈服推导出钢管与核心混凝土的实际受压极限强度,并建立配圆钢管钢骨混凝土柱轴压承载力计算公式,其计算值与试验结果吻合良好。在此基础上分析了钢管径厚比与承载力之间的关系,提出一些有用的建议,可供设计参考。Abstract: The actual ultimate strength of steel tube and core concrete is given according to steel tube yielded, with a view?of restriction of outer concrete and hoop bar on steel tube and core concrete.The calculation formula of axial compression?capacity for SRC columns with circle steel tube is established.The calculation results agree well with the test results.On the?basis of this, the relation between the ratio of radius-thickness and strength is also analyzed.Some advice is proposed for?design.
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Key words:
- SRC /
- circle steel tube /
- axial compression capacity /
- ratio of radius-thickness
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[2] 周起敬, 姜维山, 潘泰华.钢与混凝土组合结构设计施工手册.北京:中国建筑工业出版社, 1991; 林拥军.配有圆钢管的钢骨混凝土柱试验研究:[博士学位论文].南京:东南大学, 2002; [3] 曹平周.钢管混凝土柱侧压效应系数分析和极限强度计算.钢结构, 1998, 13(3):20~24; [4] ECES28B90钢管混凝土结构设计与施工规程; [5] 徐明.约束式钢骨混凝土柱的试验、理论与应用研究:[博士学位论文].南京:东南大学, 2000
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