| 大跨度钢桁梁桥施工变形监测有限元模型研究 |
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| 引用本文： | 石华胜,吴兆福.大跨度钢桁梁桥施工变形监测有限元模型研究[J].测绘通报,2017,0(10):124-127. |
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| 作者姓名： | 石华胜 吴兆福 |
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| 作者单位： | 1. 安徽省地矿局安庆测绘技术院, 安徽 安庆 246003;2. 合肥工业大学土木与水利工程学院, 安徽 合肥 230009 |
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| 摘 要： | 桥梁是交通运输网络中重要的组成部分，当前我国工程建设快速发展，大跨度桥梁层出不穷，对桥梁工程质量水平也提出了新的要求。本文针对大跨度钢桁梁桥施工监测，运用有限元法，建立了有效的有限元模型，并通过理论分析和模型计算，推演了钢桁梁桥在落架工况下的挠度变化。结果显示，该模型能较好地预测自然条件下钢桁梁挠度变化，符合实际变化规律，对确保施工安全有较大帮助。
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| 关 键 词： | 有限元模型 大跨度钢桁梁 变形监测 挠度 模型修正 |
| 收稿时间： | 2017-05-22 |
Research on Finite Element Model for Large Span Steel Truss Bridge Construction Deformation Monitoring |
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| SHI Huasheng,WU Zhaofu.Research on Finite Element Model for Large Span Steel Truss Bridge Construction Deformation Monitoring[J].Bulletin of Surveying and Mapping,2017,0(10):124-127. |
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| Authors: | SHI Huasheng WU Zhaofu |
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| Institution: | 1. Anqing Institute of Surveying and Mapping, Bureau of Geology and Mineral Exporation of Anhui Province, Anqing 246003, China;2. School of Civil Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | Bridge is an important part of transport network. At present, China' s engineering construction is developing rapidly, with an endless stream of large span bridges, bridge engineering quality level proposed new requirements. In this paper, establishing efficient finite element model for large span steel truss bridge construction monitoring using the finite element method. Deducing steel truss bridge deflection changes in working conditions of off the shelf through theoretical analysis and model calculations. The results show that the model can preferably predict steel truss beam deflection changes on the natural conditions, meet the actual variation, and thus greatly help to ensure construction safety. |
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| Keywords: | finite element model large span steel truss deformation monitoring deflection model updating |
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