| 早龄期钢筋混凝土柱压弯性能有限元分析 |
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| 引用本文： | 蔡雪峰,陶钢,庄金平.早龄期钢筋混凝土柱压弯性能有限元分析[J].混凝土,2020(6):7-10,14. |
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| 作者姓名： | 蔡雪峰 陶钢 庄金平 |
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| 作者单位： | 福建工程学院 土木工程学院,福建 福州 350118;福建工程学院 土木工程学院,福建 福州 350118;闽台合作土木工程技术福建省高校工程研究中心(福建工程学院),福建 福州 350118 |
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| 基金项目： | 福建工程学院科研发展项目;福建省科技厅项目;国家自然科学基金 |
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| 摘 要： | 以C40各龄期对称配筋钢筋混凝土柱为例,采用有限元软件ABAQUS分析各龄期钢筋混凝土柱的压弯性能,并得到相应的弯矩M-轴力N的相关曲线.建立了10组各龄期的钢筋混凝土柱模型,其中轴压模型1个,小偏心受压模型5个,大偏心受压模型3个,纯弯模型1个,每组均考虑龄期为1、3、7 d的情况.结果表明:混凝土龄期越早,有限元计算得出的弯矩M-轴力N的相关曲线与按早龄期强度套用规范公式计算得到弯矩M-轴力N的相关曲线相差越大.
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| 关 键 词： | 钢筋混凝土柱 早龄期 ABAQUS M-N相关曲线 |
Analysis on early reinforcement concrete column bending property curve by finite element |
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| CAI Xuefeng,TAO Gang,ZHUANG Jinping.Analysis on early reinforcement concrete column bending property curve by finite element[J].Concrete,2020(6):7-10,14. |
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| Authors: | CAI Xuefeng TAO Gang ZHUANG Jinping |
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| Affiliation: | (College of Civil Engineering,Fujian University of Technology,Fuzhou 350118,china;Fujian-Taiwan Cooperative Institute of Civil Engineering Technology in Universities of Fujian Province(Fujian University of Technology),Fuzhou 350118,china) |
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| Abstract: | Taking C40 reinforced concrete columns with symmetrical reinforcement at different ages as an example,finite element software ABAQUS was used to analyze their mechanical properties under the combined action of axial force and bending moment.Ten groups of reinforced concrete column models of each age were established,including 1 axial pressure model,5 small eccentric pressure models,3 large eccentric pressure models,and 1 pure bending model.Each group considered the age of 1,3 and 7 d.The results show that the earlier the concrete age is,the greater the difference between the correlation curve of moment M-axial force N obtained by finite element calculation and the correlation curve of moment M-axial force N obtained by applying the standard formula according to the strength of early age is. |
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| Keywords: | reinforced concrete column early age ABAQUS M-N related curve |
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