| 描述结构动力卸载刚度的指标验证 |
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| 引用本文： | 林煌斌,王全凤.描述结构动力卸载刚度的指标验证[J].华侨大学学报(自然科学版),2011,32(6):676-679. |
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| 作者姓名： | 林煌斌 王全凤 |
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| 作者单位： | 1. 华侨大学土木工程学院,福建泉州361021;同济大学航空航天与力学学院,上海200092;集美大学工程技术学院,福建厦门361021
2. 华侨大学土木工程学院,福建泉州,361021 |
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| 基金项目： | 国家自然科学基金资助项目(50578066); 高等学校博士学科点专项科研基金资助项目(200803850001); 福建省自然科学基金资助项目(2011J01320) |
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| 摘 要： | 提出可用于描述结构动力卸载刚度修正系数和能量变换关系系数,建立卸载过程的弹性变形能及卸载刚度表达式,并用钢骨混凝土柱恢复力试验数据对结论进行可行性验证.研究结果表明:对于在评价结构弹塑性时程分析中引入结构卸载刚度修正系数和能量变换关系系数,可以定量评价结构动力卸载,较好地解释卸载时,结构卸载刚度矩阵随时间变化构成的时变...
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| 关 键 词： | 描述指标 卸载刚度 混凝土结构 恢复力模型 弹性变形能 |
Analysis and Experiment of New Indices to Describe Dynamic Unloading Rigidity of Concrete Structure |
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| LIN Huang-bin,WANG Quan-feng.Analysis and Experiment of New Indices to Describe Dynamic Unloading Rigidity of Concrete Structure[J].Journal of Huaqiao University(Natural Science),2011,32(6):676-679. |
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| Authors: | LIN Huang-bin WANG Quan-feng |
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| Institution: | LIN Huang-bin1,2,3,WANG Quan-feng1(1.College of Civil Engineering,Huaqiao University,Quanzhou 362021,China,2.School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,3.College of Engineering Technology,Jimei University,Xiamen 361021,China) |
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| Abstract: | Unloading stiffness coefficient and energy correlation coefficient to describe unloading stiffness of structure were presented.The expression of elastic deformation energy due to damage during unloading process was established,which was validated by the experimental data of steel reinforce concrete columns.In elastic-plastic time history analysis of concrete structure,the introduction of unloading stiffness coefficient and energy correlation coefficient is conducive to evaluate quantitively the dynamic unlo... |
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