| 温度场作用下混凝土桥塔Ⅰ型裂纹开裂面应力场分析 |
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| 引用本文： | 任翔,黄平明.温度场作用下混凝土桥塔Ⅰ型裂纹开裂面应力场分析[J].世界桥梁,2011(6):50-53. |
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| 作者姓名： | 任翔 黄平明 |
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| 作者单位： | 1. 西安科技大学建筑与土木工程学院,陕西西安,710054
2. 长安大学桥梁与隧道陕西省重点实验室,陕西西安,710064 |
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| 基金项目： | 陕西教育厅科研计划项目资助(11JK0887); 西安科技大学培育基金项目(2010036) |
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| 摘 要： | 为了确定温差作用下混凝土桥塔开裂面的应力分布状态,采用奇异单元模拟裂纹尖端应力场的奇异性,建立相应计算Ⅰ型裂纹开裂面应力分布的有限元模型.通过数值计算,考察有限元模型中裂纹尖端附近区域网格参数的变化对应力场计算精度的影响,确定各个参数的敏感程度,发现在裂纹尖端区布置奇异单元时,第1行单元半径的大小对尖端应力场有较大的影...
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| 关 键 词： | 桥梁工程 桥塔 温度场 裂纹 应力场 有限元法 |
Analysis of Cracking Surface Stress Field of Type I Crack of Concrete Bridge Tower Under Action of Temperature Field |
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| REN Xiang,HUANG Ping-ming.Analysis of Cracking Surface Stress Field of Type I Crack of Concrete Bridge Tower Under Action of Temperature Field[J].World Bridges,2011(6):50-53. |
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| Authors: | REN Xiang HUANG Ping-ming |
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| Institution: | REN Xiang1,HUANG Ping-ming2 |
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| Abstract: | To determine the stress distribution conditions of the cracking surface of Type I crack of concrete bridge tower under the action of temperature differences,the singularity elements were used to simulate the singularity of the stress field at the crack tip and the corresponding finite element models for calculating the stress distribution of the cracking surface were established.Through the numerical calculation,the influences of grid parameter changes in the area near the crack tip in the finite element mo... |
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| Keywords: | bridge engineering bridge tower temperature field crack stress field finite element method |
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