| 修正的钢筋混凝土结构Park-Ang损伤模型 |
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| 引用本文： | 陈林之,蒋欢军,吕西林.修正的钢筋混凝土结构Park-Ang损伤模型[J].同济大学学报(自然科学版),2010,38(8):1103-1107. |
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| 作者姓名： | 陈林之 蒋欢军 吕西林 |
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| 作者单位： | 同济大学,土木工程防灾国家重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目，国家"973"重点基础研究发展计划资助项目，上海市教委科研创新项目 |
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| 摘 要： | 针对钢筋混凝土结构Park-Ang损伤模型在上下界不收敛的问题提出了修正形式,然后利用美国太平洋地震工程研究中心的钢筋混凝土柱试验数据库和作者完成的试验,研究了修正后损伤模型组合系数的取值,并根据试件的轴压比、剪跨比和箍筋横向约束指标等进行非线性回归分析,得到该系数的经验表达式.对比研究表明相对于Park-Ang模型而言,采用修正后的模型计算的试验破坏点的损伤指标均值更接近于1,离散性较小,能更好地反映钢筋混凝土结构的损伤水平.最后对建筑结构中常见的钢筋混凝土构件给出了组合系数的建议值.
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| 关 键 词： | 钢筋混凝土结构 地震损伤 损伤模型 |
| 收稿时间： | 4/15/2009 5:58:43 PM |
| 修稿时间： | 5/5/2010 10:37:07 AM |
Modified Park-Ang Damage Model for Reinforced Concrete Structures |
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| CHEN Linzhi,JIANG Huanjun and LU Xilin.Modified Park-Ang Damage Model for Reinforced Concrete Structures[J].Journal of Tongji University(Natural Science),2010,38(8):1103-1107. |
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| Authors: | CHEN Linzhi JIANG Huanjun and LU Xilin |
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| Institution: | State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | The modified form of the Park-Ang damage model for reinforced concrete(RC) structures is put forward with a consideration of the non-convergence of the original model on the upper and lower limit.Then the combination coefficient is calculated on the basis of the cyclic test results of RC columns from the database of the Pacific Earthquake Engineering Research Center(PEER) and the authors' tests.An empirical formula is derived through nonlinear regression analysis to relate the coefficient with the axial loa... |
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| Keywords: | reinforced concrete structures seismic damage damage model |
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