| 碳纤维布约束混凝土柱的非线性分析 |
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| 引用本文： | 李静,钱稼茹. 碳纤维布约束混凝土柱的非线性分析[J]. 工程力学, 2005, 22(1): 159-163,199 |
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| 作者姓名： | 李静 钱稼茹 |
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| 作者单位： | 清华大学土木工程系,北京,100084;清华大学土木工程系,北京,100084 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 用分级加曲率、逐步数值积分的方法计算缠绕碳纤维布(CFS)的混凝土柱的截面弯矩—曲率(M-f)关系曲线及其在轴压力和水平力共同作用下的水平力-柱顶位移(P-δ)曲线;编制了CFS约束混凝土柱在轴压力和水平力共同作用下的非线性全过程分析程序。电算得到的8根CFS约束混凝土柱和1根普通混凝土柱的P-δ曲线与试验结果吻合较好。通过非线性分析,研究了CFS约束程度、轴压比对CFS约束混凝土柱屈服后变形能力的影响,分析结果与试验结果在概念上一致。
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| 关 键 词： | 碳纤维布(CFS) 混凝土柱 CFS约束程度 轴压比 变形能力 |
| 文章编号： | 1000-4750(2005)01-0159-05 |
NONLINEAR ANALYSIS OF CARBON FIBER SHEET CONFINED CONCRETE COLUMNS |
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| LI Jing,QIAN Jia-ru. NONLINEAR ANALYSIS OF CARBON FIBER SHEET CONFINED CONCRETE COLUMNS[J]. Engineering Mechanics, 2005, 22(1): 159-163,199 |
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| Authors: | LI Jing QIAN Jia-ru |
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| Abstract: | With gradual increase of curvature and step-by-step numerical integration method, the section moment-curvature (M-f) relationship curve of carbon fiber sheet (CFS) confined concrete column as well as the lateral force - top displacement (P-δ) curve of CFS confined concrete column subjected to monotonic increasing lateral load are obtained. A computer program is developed to perform full-range nonlinear analysis of CFS confined concrete columns subjected to monotonic increasing lateral load. The calculated P-δ curves of 8 CFS confined concrete column specimens and 1 unconfined concrete column specimen are in good agreement with the experimental results. The influence of confinement degree of CFS and the axial load ratio on the post-yield deformation capacity of the CFS confined concrete column is investigated. |
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| Keywords: | carbon fiber sheet (CFS) reinforced concrete column CFS confinement degree axial force ratio deformation capacity |
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