| 钢管混凝土偏心受压应力-应变关系模型研究 |
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| 引用本文： | 陈宝春,陈友杰,王来永,韩林海. 钢管混凝土偏心受压应力-应变关系模型研究[J]. 中国公路学报, 2004, 17(1): 24-28 |
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| 作者姓名： | 陈宝春 陈友杰 王来永 韩林海 |
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| 作者单位： | 福州大学,土木建筑工程学院,福建,福州,350002 |
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| 基金项目： | 国家自然科学基金项目(50078016) |
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| 摘 要： | 提出钢管混凝土偏心受压应力-应变关系的纤维单元模型。钢管采用一维四段直线的应力-应变关系,混凝土采用以一维形式表达、考虑钢管与混凝土相互作用的应力-应变关系。提出了偏心受压的钢管混凝土考虑钢管径向应力梯度对紧箍作用影响的核心混凝土的应力-应变关系模型。最后应用提出的钢管混凝土偏心受压应力-应变关系,对钢管混凝土偏心受压柱和钢管混凝土拱面内受力全过程进行了计算分析。
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| 关 键 词： | 桥梁工程 应力-应变关系 纤维单元模型 偏心受压 钢管混凝土 |
| 文章编号： | 1001-7372(2004)01-0024-05 |
| 修稿时间： | 2003-03-18 |
Study of stress-strain relation of concrete filled steel tubular eccentric compression column |
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| CHEN Bao-chun,CHEN You-jie,WANG Lai-yong,HAN Lin-hai. Study of stress-strain relation of concrete filled steel tubular eccentric compression column[J]. China Journal of Highway and Transport, 2004, 17(1): 24-28 |
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| Authors: | CHEN Bao-chun CHEN You-jie WANG Lai-yong HAN Lin-hai |
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| Abstract: | A fiber element model of stress-strain relation of eccentric compression CFST is proposed. The stress-strain relation of steel tube is composed of four straight lines. The stress-strain relation of core concrete is a model in the one dimensional shape. A stress-strain relation of core concrete is presented,in which the confinement effect of steel tube to core concrete is modified by the circumference stress grade. Finally,this material model of CFST is used to analyze the whole behaviors of CFST eccentric compression columns and the CFST arches. |
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| Keywords: | bridge engineering stress-strain relation fiber element model eccentric compression concrete-filled steel tube(CFST) |
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