Study on the influence factors on orifice stress of arch dam's orifice

被引：0
|
作者：
Li S. [1 ]
Yang S. [2 ]
Gao J. [1 ]
机构：
[1] Institute of Hydroelectric Engineering, Xi'an University of Technology
[2] Hydrochina Chengdu Engineering Corporation
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2010年 / 18卷 / 01期
关键词：
3D FEM; Arch dam; Cantilever structures; Orifice stress; Submodeling;
D O I：
10.3969/j.issn.1005-0930.2010.01.003
中图分类号：
学科分类号：
摘要：
The discharge orifice stress distribution of high arch dam is very complicate and influenced by such factors as cantilever in the inlet and outlet of the orifice, water pressure in orifice, dam gravity, upstream water pressure, temperature and so on. In this paper the 3D finite element model of arch dam was built with combination to an engineering case, and the orifice stress distribution of bottom discharge orifice was calculated and analyzed by submodeling techniques of ANSYS. Through multi-scheme calculations for different structure forms and load effects, the factors influencing orifice stress distribution were roundly analyzed. It was found from the analyses that cantilever structures had a great influence on stress distribution of inlet and outlet region and high tension stress along flow direction appears on the discharge orifice side wall, which was contrary to traditional view that the hoop tension stress of orifice was higher than tension stress along flow direction. This paper can be reference for reinforcing design of discharge orifice and similar engineering design.
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页码：20 / 27
页数：7
相关论文
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