| 新型加强型钢拱梁的性能分析及优化 |
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| 引用本文： | 王秀丽,陈志祥.新型加强型钢拱梁的性能分析及优化[J].建筑科学,2007,23(3):1-5,14. |
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| 作者姓名： | 王秀丽 陈志祥 |
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| 作者单位： | 兰州理工大学,土木工程学院,兰州,730050 |
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| 基金项目： | 国家自然科学基金;兰州理工大学优秀青年教师计划 |
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| 摘 要： | 通过有限元软件ANSYS,本文计算分析了在钢拱梁轴线平面内增加适当的撑杆和预应力索而形成的新型加强型钢拱梁结构的受力性能,并且分析了改变加强型钢拱梁两侧撑杆的相对长度对改善结构受力性能所起到的优化作用,显示了两个加强型钢拱梁在不同竖向荷载作用下结构应力和位移的变化规律。结果显示两加强型钢拱梁的刚度和承载力与普通大跨度钢拱梁相比均有很大的提高,改变两侧撑杆相对长度的加强型钢拱梁与原加强型钢拱梁相比受力更加合理。
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| 关 键 词： | 加强型钢拱梁 预应力 刚度 承载力 |
| 文章编号： | 1002-8528（2007）03-0001-05 |
| 收稿时间： | 2006-03-21 |
| 修稿时间： | 2006-03-21 |
The Property Analysis and Optimization of a New Reinforced Steel Arch Beam |
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| WANG Xiu-li,CHEN Zhi-xiang.The Property Analysis and Optimization of a New Reinforced Steel Arch Beam[J].Building Science,2007,23(3):1-5,14. |
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| Authors: | WANG Xiu-li CHEN Zhi-xiang |
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| Affiliation: | School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | By using the finite element analysis software "ANSYS",this paper analyzes mechanical behavior of a new reinforced steel arch beam-a structure where proper stay bars and prestressed cables are arranged along the axial plane of the steel arch beam,and analyzes the optimization of improving the internal force characteristics of the structure when the relative length of two sides' stay bars of the reinforced steel arch beam is changed so as to show their variation regularities of stress and deformation under vertical loads.The analysis results display that stiffness and load-bearing capacity of the two reinforced steel arch beams increase greatly,and the structure which has changed the length of two sides' stay bars is more superior. |
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| Keywords: | reinforced steel arch beam prestressed stiffness load-bearing capacity |
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