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	坝基混凝土防渗墙应力位移影响因素分析
	王刚 ; 张建民 ; 濮家骝 ; Wang Gang ; Zhang Jianmin ; Pu Jialiu
	2010-07-19 ; 2010-07-19
关键词	防渗墙 应力变形 围堰 土石坝 溪洛渡 diaphragm wall stress-deformation cofferdam embankment Xiluodu hydropower station TV543.8
其他题名	An evaluation of the factors influencing the stress and deformation of concrete diaphragm wall in dams
中文摘要	以溪洛渡围堰的设计对比方案为例,采用二维和三维有限元方法计算堰体和防渗墙的应力位移,揭示防渗墙应力位移随主要影响因素的变化规律。研究表明:防渗墙的水平位移主要由堰体型式决定;防渗墙材料的模量越高,其适应堰体变形的能力越差,安全性就越低;降低防渗墙上部材料的模量能在一定程度上降低防渗墙的应力;墙厚在合理范围(0.8￣1.2 m)内变化,对防渗墙的应力位移影响很小;三维效应对防渗墙的中间断面应力位移影响较小,但两岸陡坡处可能变危险。上述结论可为同类土石坝和围堰的方案设计和优化提供参考。; Stress and deformation analyses were performed on the design schemes of Xiluodu upstream cofferdam by using 2-D and 3-D FEM.Based on the calculation results,main factors influencing the stress and deformation of the diaphragm wall under a dam were revealed.The major findings include the followings:(1) the horizontal displacement of the diaphragm wall is governed by the dam type;(2) the higher the wall's modulus,the more dangerous the wall becomes;(3) the stress in the wall can be significantly reduced by decreasing the modulus of the filled materials above the wall;(4) a change of wall thickness within a reasonable range(from 0.8 m to 1.2 m)has little effect on the stress and displacement of the wall;(5) 3-D effect of the valley is of little significance for the stress and deformation of the middle wall section,whereas sections near steep slopes may become more dangerous.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/74549]
专题	清华大学
推荐引用方式 GB/T 7714	王刚,张建民,濮家骝,等. 坝基混凝土防渗墙应力位移影响因素分析[J],2010, 2010.
APA	王刚,张建民,濮家骝,Wang Gang,Zhang Jianmin,&Pu Jialiu.(2010).坝基混凝土防渗墙应力位移影响因素分析..
MLA	王刚,et al."坝基混凝土防渗墙应力位移影响因素分析".(2010).

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