| 钢管混凝土拱肋面内弹塑性承载力分析 |
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| 引用本文： | 颜全胜,王頠.钢管混凝土拱肋面内弹塑性承载力分析[J].昆明理工大学学报(理工版),2003,28(5):110-113. |
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| 作者姓名： | 颜全胜 王頠 |
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| 作者单位： | 华南理工大学,交通学院,广东,广州,510640 |
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| 摘 要： | 采用基于纤维模型的分段——分块的杆系结构有限元方法，推导了钢管混凝土拱肋的弹塑性刚度矩阵，提出了计算钢管混凝土拱肋弹塑性稳定承载力的计算模型，编制了相应的FORTRAN程序。采用本文方法，计算了圆管截面钢管混凝土拱肋的面内弹塑性极限承载力，理论分析结果与文献报道的试验和理论分析结果吻合良好。
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| 关 键 词： | 钢管混凝土 拱肋 弹塑性承载力 纤维模型 有限元分析 拱桥 应力-应变关系 增量平衡方程 |
| 文章编号： | 1007-855X(2003)05-0110-04 |
| 修稿时间： | 2003年5月9日 |
Ultimate Load Analysis for Concrete-filled-steel-tube Arch Ribs |
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| YAN Quan sheng,WANG Wei.Ultimate Load Analysis for Concrete-filled-steel-tube Arch Ribs[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2003,28(5):110-113. |
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| Authors: | YAN Quan sheng WANG Wei |
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| Abstract: | An approach to the ultimate load analysis of the concrete-filled-steel-tube (CFST) arch bridge in plane is presented. Based on the fiber model of beam structure, the elastic-plastic stiffness matrix of the arch rib elements is deduced, and a FORTRAN program in which both the geometric and material non-linearity are taken into account, is developed. The elastic-plastic ultimate loads of two CFST arch rib models with circular section are calculated. The total load-deflection relation curves of the two models are obtained. And the results show that the present results agree well with those by the previously experimental and numerical studies. |
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| Keywords: | concrete-filled-steel-tube arch bridge ultimate load elastic-plastic analysis |
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