| 设置软垫层坝后背管接触非线性有限元分析 |
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| 引用本文： | 何勇,林涛,徐远杰. 设置软垫层坝后背管接触非线性有限元分析[J]. 长江科学院院报, 2006, 23(6): 88-91 |
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| 作者姓名： | 何勇 林涛 徐远杰 |
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| 作者单位： | 武汉大学,水资源与水电工程科学国家重点实验室,武汉,430072;武汉大学,土木建筑工程学院,武汉,430072;武汉大学,水资源与水电工程科学国家重点实验室,武汉,430072;武汉大学,土木建筑工程学院,武汉,430072 |
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| 摘 要： | 以三峡水电站坝后背管为例，借助有限元软件ANSYS建立了坝后背管设置软垫层与内衬钢管面摩擦接触有限元模型，考虑接触非线性和混凝土开裂非线性，分析计算了设软垫层坝后背管、钢筋的受力性态及混凝土的开裂情况，结果表明：垫层能有效减小钢管向外围混凝土传递的内水压力，提高钢管的承载比，改善外围混凝土的应力状态。对设置软垫层的提出了优化建议。
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| 关 键 词： | ANSYS 坝后背管 软垫层 非线性 |
| 文章编号： | 1001-5485（2006）06-0088-04 |
| 收稿时间： | 2006-03-17 |
| 修稿时间： | 2006-03-17 |
Contact Nonlinear Finite-Element method for Analyses of Penstock on the Downstream Dam Surface with Soft Layer |
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| HE Yong,LIN Tao,XU Yuan-jie. Contact Nonlinear Finite-Element method for Analyses of Penstock on the Downstream Dam Surface with Soft Layer[J]. Journal of Yangtze River Scientific Research Institute, 2006, 23(6): 88-91 |
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| Authors: | HE Yong LIN Tao XU Yuan-jie |
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| Affiliation: | 1. State Key Laboratory of Water Resources and Hydropower Engineer Science , Wuhan University 430072, China; 2. School of civil engineering, Wuhan University 430072, China |
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| Abstract: | In connection with Three Gorges Project,the model of contact between soft layer and inner lining steel tube surface is built by ANSYS,Based on the contact nonlinear and nonlinear cracking,by the non-linear finite element method,the state of stress of steel bar and cracking of concrete are analyzed.The result of calculating indicates:placing soft layer between penstock and concrete can reduce tension stress and improve the anti cracking safety of surrounding concrete,and thoroughly play penstock into full play.The opinions for optimization were put forward finally. |
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| Keywords: | ANSYS penstock on the downstream dam surface raft layer nonlinear |
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