隔河岩上重下斜封拱式重力拱坝设计研究

Design of Geheyan arch gravity dam featured by upper gravity dam and lower oblique arch

为适应隔河岩坝址特殊的自然条件,采用拱梁分载法进行平、斜封拱坝的比较计算,并对各种斜封拱坝方案进行分析研究,结合三维有限元计算及结构模型试验验证,选用三心单曲、上重下斜封拱式重力拱坝体型.安全监测资料表明:大坝受力条件优越,运动正常.

In consideration of the natural condition at the Geheyan dam site, the arch cantilever loaddistribution method was applied to comparison of the flat arch dam with the oblique arch dam, and various schemes of oblique arch dam were studied. In combination with 3D FEM computation and structural model tests, a threecenter singlecurvature and upper gravity lower oblique arch dam was finally determined. It has been in normal operation for 8 years since it begun to retain water in April 1994. Safety monitoring data show that the stressing condition of the dam is favorable, testifying its successful design.