| 扩大截面加固轴心受压圆截面短柱承载力计算 |
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| 引用本文： | 谢立栋,刘寒冰. 扩大截面加固轴心受压圆截面短柱承载力计算[J]. 重庆交通大学学报(自然科学版), 2009, 28(1): 8-10,48 |
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| 作者姓名： | 谢立栋 刘寒冰 |
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| 作者单位： | 1. 徐州工程学院土木工程学院,江苏,徐州,221008
2. 吉林大学交通学院,吉林,长春,130025 |
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| 摘 要： | 轴心受压圆截面短柱因承载力不足而采用扩大截面法进行加固,为了研究加固柱的破坏界限和正截面承载力,根据结合面处混凝土受力平衡,通过数值迭代解法求出加固柱的径向应变,从而按三向受压计算旧混凝土的纵向抗压强度;新混凝土按环向受拉、纵向受压计算抗压强度。当外包新混凝土达到拉应变极限时,外包混凝土开裂,加固柱达到破坏界限。
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| 关 键 词： | 扩大截面法 加固柱 二次受力 三向受力 数值计算 |
Calculation of Bearing Capacity of Axial Compression Short Column with Round Cross-Section Reinforced by Enlarging Cross-Section Method |
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| XIE Li-dong,LIU Han-bing. Calculation of Bearing Capacity of Axial Compression Short Column with Round Cross-Section Reinforced by Enlarging Cross-Section Method[J]. Journal of Chongqing Jiaotong University, 2009, 28(1): 8-10,48 |
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| Authors: | XIE Li-dong LIU Han-bing |
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| Affiliation: | 1.School of Civil Engineering;Xuzhou Institute of Technology;Jiangsu Xuzhou 221008;China;2.School of Transportation;Jilin University;Jilin Changchun 130025;China |
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| Abstract: | Axial compression short column with round cross-section is reinforced by enlarging cross-section method,for it is short of bearing capacity.In order to study the destruction limits and the bearing capability of normal cross-section of reinforced column,the radical stress of the reinforced column is obtained through the iterative numerical solution,according to the force balance of concrete at the junction of old concrete and new concrete.The vertical compressive strength of old concrete is calculated by tri... |
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| Keywords: | enlarging cross-section method strengthened column secondary loading tri-axial stress numerical calculation |
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