| 基于柔度法的异形截面钢筋混凝土构件非线性分析 |
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| 引用本文： | 张守军,李青宁.基于柔度法的异形截面钢筋混凝土构件非线性分析[J].世界地震工程,2008,24(1):34-39. |
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| 作者姓名： | 张守军 李青宁 |
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| 作者单位： | 西安建筑科技大学,土木工程学院,陕西,西安,710055 |
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| 摘 要： | 钢筋混凝土异形截面构件在住宅建筑中已被广泛应用,但适合此类长细比较小的异形截面构件空间分析模型并不成熟.目前国内外学者提出的基于有限单元柔度法的纤维单元模型,还不能考虑剪切变形对构件刚度的影响,对于短肢剪力墙这类长细比较小的构件是不适用的.本文建立了考虑剪切变形的基于柔度法的弹塑性纤维单元,对L形钢筋混凝土构件进行了算例分析.模拟计算结果与试验结果显示出良好的一致性,L形截面构件在侧力作用下会发生斜弯曲现象,钢筋混凝土构件在纯弯矩作用下杆件具有伸长特性.
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| 关 键 词： | 有限单元柔度法 纤维模型单元 剪切变形 非线性分析 异形截面 有限单元柔度法 异形截面 钢筋 混凝土 构件 线性分析 特性 杆件 弯矩作用 现象 弯曲 发生 一致性 显示 试验 结果 模拟计算 算例分析 纤维单元模型 塑性纤维 |
| 文章编号： | 1007-6069（2008）01-0034-06 |
| 收稿时间： | 2007-09-21 |
| 修稿时间： | 2008-01-23 |
Nonliner analysis mordel for special-shaped RC beam-column members |
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| ZHANG Shou-jun,LI Qing-ning.Nonliner analysis mordel for special-shaped RC beam-column members[J].World Information On Earthquake Engineering,2008,24(1):34-39. |
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| Authors: | ZHANG Shou-jun LI Qing-ning |
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| Abstract: | Special shaped RC members has been widely used in housing buildings,but there is no effective three-dimensional nonlinear analysis model in dealing with members with small ratios of slenderness.Flexibility-based finite element model proposed by former scholars has ignored the shear deformation of the beam-column member.It is unsuitable for the special shaped RC members or shear walls,which ratios of slenderness are small.Flexibility-based nonlinear finite element model with considering shear deformation is set up in this paper,which extends the application of flexibility-based finite element method to beam-column members with small ratios of slenderness.The analyzed result of an example on L-shaped column shows that is well conform with the test result,oblique bending and elongation of the member may happen for the special-shaped RC beam-column members under lateral force. |
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| Keywords: | flexibility-based finite element method elastic-plastic fiber element shear deformation nonlinear analysis special-shaped RC member |
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