| 方钢管高强混凝土柱恢复力模型研究 |
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| 引用本文： | 马恺泽,梁兴文,李斌.方钢管高强混凝土柱恢复力模型研究[J].世界地震工程,2011,27(1). |
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| 作者姓名： | 马恺泽 梁兴文 李斌 |
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| 作者单位： | 1. 西安建筑科技大学,土木工程学院,陕西,西安,710055
2. 内蒙古科技大学建筑与土木工程学院,内蒙古,包头,014010 |
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| 基金项目： | 高等学校博士学科点专项基金项目(20070703002); 内蒙古自然科学基金项目(2007110201); 内蒙古教育厅项目(NJ06141) |
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| 摘 要： | 根据23根方钢管高强混凝土柱在反复水平荷载作用下的试验结果,通过理论分析和试验结果的回归分析,提出了方钢管高强混凝土柱的恢复力模型;确定了轴压比、约束效应系数、长细比等主要参数与恢复力模型之间的关系;给出了各特征点参数的计算方法。研究结果表明:最大荷载与屈服荷载的比值、退化刚度与弹性刚度的比值都随着轴压比和长细比的增加而减小,随着约束效应系数的增加而增大;按建议的恢复力模型计算的骨架曲线与试验曲线符合较好。文中建议的恢复力模型既反映了主要影响因素,又便于对结构进行非线性动力分析。
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| 关 键 词： | 方钢管混凝土柱 恢复力模型 轴压比 约束效应系数 长细比 |
Research on the restoring force model of high strength concrete-filled rectangular steel tubular columns |
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| MA Kaize,LIANG Xingwen,LI Bin.Research on the restoring force model of high strength concrete-filled rectangular steel tubular columns[J].World Information On Earthquake Engineering,2011,27(1). |
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| Authors: | MA Kaize LIANG Xingwen LI Bin |
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| Institution: | MA Kaize1,LIANG Xingwen1,LI Bin2(1.School of Civil Engineering,Xi'an University of Architecture and Technology,Shaanxi 710055,China,2.Architectural Engineering Institute,Inner Mongolia Scientific And Technical University,Baotou 014010,China) |
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| Abstract: | Based on experimental results of 23 high strength concrete-filled rectangular steel tubular(HCRST) columns subjected to cyclic lateral load,the restoring force model of HCRST columns is researched.Through theoretical and regression analysis and experimental results,the relations between the restoring model of HCRST columns and axial load ratio,confinement effect coefficient as well as slenderness ratio are discussed.The calculating methods and steps are established.The results show that the ratios of degrad... |
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| Keywords: | concrete-filled rectangular steel tubular columns restoring force model axial load ratios confinement effect coefficient slenderness ratio |
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