三河口拱坝底孔闸墩预应力锚索布置方案设计研究  

Layout Design of Prestressed Anchor Cable in Bottom Hole of Sanhekou Arch Dam

作　　者：魏克武[1] 赵玮[1] WEI Kewu;ZHAO Wei(Shaanxi Investigation and Design Institute of Water Conservancy and Electric Power,Xi’an,Shaanxi 710001,China)

机构地区：[1]陕西省水利电力勘测设计研究院,陕西西安710001

出　　处：《水利与建筑工程学报》2020年第2期101-105,175,共6页Journal of Water Resources and Architectural Engineering

摘　　要：三河口拱坝底孔是高水头、工作闸门承受大推力和出口闸墩为大悬臂的复杂受力结构,闸墩采用预应力结构,较大改善了闸墩的受力条件及应力状态。通过ANSYS三维有限元计算分析,对闸墩锚索的布置参数、张拉顺序、应力影响范围以及相互影响进行分析、评价,确定锚索布置的设计方案,并进一步对选定方案研究,验证设计方案的合理性。该研究成果将为类似深底孔设计及闸墩大悬臂结构高拱坝的应力分析提供一定参考依据。The bottom hole of Sanhekou Arch Dam is a complicated structure with high water pressure, working gate bearing large thrust, and the outlet gate pier is a complex bearing structure with large cantilever. The stress condition and stress distribution of the pier can be greatly improved by optimizing the prestressed structure. Through the three-dimensional finite element analysis based on ANSYS, the layout parameters, tension sequence, stress influence range and mutual influence of the pier anchor cable are analyzed and evaluated,and the final design scheme is determined. Further study was finished to verify the rationality of the design scheme. The research results could provide some references for the design of similar deep bottom hole and the stress analysis of large cantilever structure high arch dam.

关 键 词：闸墩结构 预应力锚索 张拉顺序 拱坝底孔 

分 类 号：TU472[建筑科学—结构工程]