摘要
通过物理模型试验 ,本文分析了龙羊峡工程导流洞堵头的受力性态 ,论述了堵头的超载安全系数可以达到 5 ,揭示即便超载安全系数达 1 1时 ,堵头也不会沿洞壁推出。对于大型堵头笔者建议塞体总长一般可以在 1 .5～ 2 .0倍洞径情况下选取 ,必要时经非线性有限元或物理模型试验最终予以肯定。文中并对其它一些设计问题进行了讨论。
The article researches the mechanism characteristics of the plug in the diversion tunnel of Longyangxia project. The overload safety factor of the plug has been found to be 5, and even if it comes to 11, the plug can not be yet pushed away along the tunnel in the physical model test. It is proposed that the length of the plug can generally be selected in the range of 1 5～2 0 times of the diameter of the hole for large scale diversion tunnel, and if necessary, the non linear FEM calculation or physical model test ought to be conducted to confirm its rationality finally. Some design problems are discussed in the article as well.
出处
《水力发电学报》
CSCD
北大核心
2000年第3期14-22,共9页
Journal of Hydroelectric Engineering
