| 聂建国,唐亮.基于固定角软化桁架模型的钢筋混凝土[J].计算力学学报,2007,24(5):545~549 |
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| 基于固定角软化桁架模型的钢筋混凝土 |
| Nonlinear analysis of reinforced concrete torsional member based on fixed-angle softened truss model |
| 修订日期：2005-05-17 |
| DOI：10.7511/jslx20075107 |
| 中文关键词: 钢筋混凝土构件,纯扭,固定角软化桁架模型,非线性分析 |
| 英文关键词:reinforced concrete members,pure torsion,fixed-angle softened truss model,nonlinear analysis |
| 基金项目:国家自然科学基金(50438020)资助项目 |
| 聂建国 唐亮 |
| 清华大学土木工程系结构与振动教育部重点实验室 北京100084 |
| 摘要点击次数: 1553 |
| 全文下载次数: 17 |
| 中文摘要: |
| 在固定角软化桁架模型的基础上,提出了钢筋混凝土构件在纯扭作用下的非线性分析方法。根据平衡条件、变形协调条件和材料本构关系,推导出16个方程,其中包含20个变量。而后根据扭转问题的特点,提出了求解这些方程的有效算法。该方法不仅可以预测受扭构件的极限强度,而且可以预测其开裂后的荷载-变形历史。通过对63个试件的计算验证,计算结果与试验结果吻合良好。 |
| 英文摘要: |
| A new nonlinear analysis method is developed for torsion of reinforced concrete members based on fixed-angle softened truss model,which assumes the cracks to be oriented in the principal compression direction of the externally applied stresses.Sixteen equations involving twenty variables were derived from equilibrium,compatibility,and constitutive laws of materials.And an efficient algorithm was proposed to solve these simultaneous equations according to the characteristic of torsion problem.This method can predict not only the torsional strength but also the post-cracking behavior of RC members subjected to pure torsion.Through analyzing 63 specimens available in the literature the results predicted by this method are in good agreement with those obtained from tests. |
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