| 变截面预应力混凝土箱形连续梁桥设计若干问题的探讨 |
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| 引用本文： | 廖娟 叶贵如 徐兴. 变截面预应力混凝土箱形连续梁桥设计若干问题的探讨[J]. 中南公路工程, 2005, 30(4): 133-135 |
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| 作者姓名： | 廖娟 叶贵如 徐兴 |
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| 作者单位： | 浙江大学交通工程研究所,浙江杭州310027 |
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| 摘 要： | 采用了一种新型的虚拟层合板壳单元进行空间有限元分析计算。计算结果验证了预应力混凝土箱形连续梁桥中出现斜裂缝的原因推测。经计算发现设计改良后桥梁的工作状态得到了极大的改善，且利用虚拟层合板壳单元法计算，不仅可大大减少单元数量且计算结果精确，计算速度快。
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| 关 键 词： | 预应力混凝土箱形连续梁桥 虚拟层合板壳单元 空间有限元分析 斜裂缝 |
| 文章编号： | 1002-1205(2005)04-0133-03 |
| 收稿时间： | 2004-04-12 |
| 修稿时间： | 2004-04-12 |
Study on the design of non-uniform continual box-gird with pre-stressed concrete bridge |
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| LIAO Juan, YE Guiru, XU Xing. Study on the design of non-uniform continual box-gird with pre-stressed concrete bridge[J]. Central South Highway Engineering, 2005, 30(4): 133-135 |
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| Authors: | LIAO Juan YE Guiru XU Xing |
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| Affiliation: | Institute of Traffic Engineering, Zhejiang University, Hangzhou, Zhejiang 310027 |
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| Abstract: | A new style element--virtual lamina shell element was applied to do the FEM spatial analysis of structure. Results prove that presumption of the causes of diagonal cracks in continual box-gird with prestressed concrete bridge is correct. According to the results of analysis of the improved design, the active state of the bridge has been greatly improved. By use of the method of virtual lamina shell element, not only the calculation speed is increased, but also the number of elements reduced. |
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| Keywords: | virtual lamina shell element FEM spatial analysis continual box-gird with pre-stressed concrete bridge diagonal cracks |
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