| 大型U形渡槽动力性能分析 |
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| 引用本文： | 吴轶,莫海鸿,杨春.大型U形渡槽动力性能分析[J].建筑技术开发,2005(3). |
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| 作者姓名： | 吴轶 莫海鸿 杨春 |
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| 作者单位： | 广州大学土木工程学院，华南理工大学，华南理工大学 广州510405，华南理工大学，广州510640，广州510640，广州510640 |
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| 摘 要： | 以东深供水改造工程中樟洋渡槽和某小型渡槽为研究对象 ,对比分析大型预应力U形渡槽结构动力特性 ,研究渡槽结构在Mexico强震激励下的振动反应 ,以获得渡槽中动水压力资料。研究表明常规的抗震设计方法可以满足小型渡槽结构的抗震设计要求 ,而大型渡槽中水体的大幅晃动作用较大程度地改变了水压力、槽体应力的分布和数值 ,对渡槽中预应力钢筋不利 ,在渡槽的抗震设计中 ,动水压力应该作为一项主要的外荷载予以考虑。
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| 关 键 词： | 渡槽结构 任意拉格郎日-欧拉(ALE) 流固耦合 |
STUDY ON DYNAMIC PERFORMANCES OF LARGE U SHAPE AQUEDUCT |
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| Wu Yi Mo Hai-hong Yang Chun.STUDY ON DYNAMIC PERFORMANCES OF LARGE U SHAPE AQUEDUCT[J].Building Technique Development,2005(3). |
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| Authors: | Wu Yi Mo Hai-hong Yang Chun |
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| Affiliation: | Wu Yi Mo Hai-hong Yang Chun |
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| Abstract: | Zhangyang aqueduct built in water conveyance projects from the east Pearl River in GunagDong province to HongKong and a small aqueduct are selected,comparative numerical simulations of large prestressing U shape aqueduct structure are carried out to study the dynamic features and earthquake response of aqueduct under Mexico strong earthquake action,and to obtain data on hydrodynamic pressure in the aqueduct structure.Results show that normal design aseismic method can meet the requirement of small aqueduct,while large amplitude sloshing effects will greatly change the distribution and value of hydrodynamic pressure and stress of large queduct,which will affect the effectiveness of prestressing steel bar in the large prestressing U shape aqueduct structure.Therefore,hydrodynamic pressure should be treated as an important external load in the aseismatic design of large aqueduct. |
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| Keywords: | Aqueduct structure Arbitrary Lagrangian Eulerian(ALE) Fluid-structure interaction(FSI) |
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