摘要
万家寨水利枢纽拦河坝轴线处河道断面呈偏宽“Ｕ”字形， 坝型为直线半整体式重力坝。由于两岸边坡陡峻， 岸高在１００ ｍ 以上， 存在高边坡坝段的稳定及应力问题。在设计中先后进行了坝体三维模型试验， 采用刚体极限平衡法、拱梁分载法、有限元分析法进行分析计算， 得出的结论是： 边坡坝段之间与河床坝段之间采用半整体式连接为宜； 边坡坝段之间的并缝高程分别为９４８ ｍ 、９４０ ｍ ， 岸坡坝段与河床坝段之间在９１５ ｍ 高程并缝； 并缝水位以９７０ ｍ 为好； 应采取适当措施以减小岸坡渗透压力， 保证大坝稳定及安全运行。
The dam axis of Wanjiazhai Water Control Project is located in the wide U shaped channel. The dam type is a straight semi monolithic gravity dam. Because of two steep bank slopes with the height of more than 100m, its stability and stresses in the abutment sections should be paid attention to. In the design, three-dimensional model tests on the dam body have been made. The calculations have also been conducted by the methods of rigid limit equilibrium, load sharing between arch and beam, and finite element analysis. The conclusions are that the semi monolithic link between abutment sections and channel dam sections is suitable; the parallel joint evaluations between abutment sections shall be 948m and 940m respectively; the parallel joint evaluation between abutment section and channel dam section shall be 915m. Meanwhile, some measures shall be adopted to reduce the seepage pressure in order to guarantee the stability and safe operation of dam.
出处
《水力发电》
北大核心
1999年第12期15-16,53,共3页
Water Power
关键词
重力坝
边坡坝段
坝肩稳定
应力分析
水利枢纽
semi-monolithic gravity dam, abutment section, abutment stability, stress analysis, engineering measures, Wanjiazhai Water Control Project
