| 大型预应力U型薄壳渡槽施工过程仿真分析 |
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| 引用本文： | 王清云,王丽梅,杨开云,谢巍.大型预应力U型薄壳渡槽施工过程仿真分析[J].华北水利水电学院学报,2006,27(2):23-25. |
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| 作者姓名： | 王清云 王丽梅 杨开云 谢巍 |
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| 作者单位： | 华北水利水电学院土木工程系,河南,郑州,450011 |
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| 摘 要： | 针对预应力U型薄壳渡槽的施工问题,采用单元“生和死”的技术及“时程”分析的方法进行了仿真计算,得出了预应力U型薄壳渡槽在张拉纵、环向预应力锚索、装配横杆、造槽机移位过跨等受载过程中槽身混凝土的力学行为变化规律.在上述一系列的施工过程中,施加预压应力效果较好,采用造槽机施工对槽身损伤小,为渡槽的设计和施工提供了依据.
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| 关 键 词： | U型渡槽施工 仿真分析 预应力 造槽机 |
| 文章编号： | 1002-5634（2006）02-0023-03 |
| 收稿时间： | 2005-11-10 |
| 修稿时间： | 2005-12-30 |
Simulative Analysis of Construction of Large-scale Prestressed U-shape Thin Shell Aqueducts |
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| WANG Qing-yun,WANG Li-mei,YANG Kai-yun,XIE Wei.Simulative Analysis of Construction of Large-scale Prestressed U-shape Thin Shell Aqueducts[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2006,27(2):23-25. |
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| Authors: | WANG Qing-yun WANG Li-mei YANG Kai-yun XIE Wei |
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| Affiliation: | North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China |
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| Abstract: | A simulative analysis of the construction of prestressed U-shape thin shell aqueducts is conducted with the methods of ″element birth and death″ and ″time-history analysis″.From the analysis the mechanical variations of the concrete in prestressed U-shape thin shell aqueducts are obtained during a series of construction process including prestressing the longitudinal and circumferential tendons,assembling traversing lever,moving the aqueduct-making machine to cross-over span,etc..Following conclusions are made: application of pre-compressive stress could result better effects;and using aqueduct-making machines in aqueduct construction may reduce damage to the aqueduct in the above mentioned operations,which are bases for aqueduct design and construction. |
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| Keywords: | construction of the U-shape aqueduct simulative analysis prestress the aqueduct-making machine |
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