| 日照温差作用下天桥特大桥稳定性分析 |
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| 引用本文： | 黄己伟.日照温差作用下天桥特大桥稳定性分析[J].交通科技与经济,2014(4):83-87. |
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| 作者姓名： | 黄己伟 |
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| 作者单位： | 四川建筑职业技术学院工程管理系,四川德阳618000 |
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| 摘 要： | 以日照温差对天桥特大桥超高墩大跨度桥梁的稳定性影响为例,介绍有限元软件ANSYS中BEAM188单元温度梯度的施加方法并建立有限元模型,分析日照温差作用下桥梁在102m和155m高墩最大悬臂施工阶段以及成桥阶段稳定性。计算结果表明:三种工况下的稳定系数均在规范许可范围之内,说明该桥基本能够满足正常施工和安全运营的需要。
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| 关 键 词： | 刚构桥 有限元 日照温差 稳定性分析 |
Effect by Solar Temperature Difference on Stability of Tianqiao Bridge |
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| HUANG Ji-wei.Effect by Solar Temperature Difference on Stability of Tianqiao Bridge[J].Technology & Economy in Areas of Communications,2014(4):83-87. |
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| Authors: | HUANG Ji-wei |
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| Institution: | HUANG Ji-wei(Department of Management Engineering, Sichuan College of Architectural Technology, Deyang 618000, Sichuan, China) |
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| Abstract: | The solar temperature difference has significant influence on the stability of long-span bridges with high pier. As Tianqiao bridge for example,the applied method of temperature gradient BEAM188 unit in the finite element software ANSYS is introduced and the finite element model is established. Then, the stability of 102 m and 155 m high pier in the maximum cantilever construction stage and finished stage under effect by solar temperature difference are analyzed. The results show that the stabiltye coefficients under the three conditions are all in the range of the specification, which indicate the bridge can meet the need of the normal construction and safe operation. |
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| Keywords: | rigid frame bridge finite element solar temperature difference stability analysis |
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