CAJ | 학술논문

采用三维非线性有限元法,模拟了杨房沟拱坝坝体、坝基岩体及主要断层结构面,对坝体进行了位移应力分析,并结合三维极限平衡法分析,对坝肩关键性的可能滑动块体进行了有限元法抗滑稳定分析,论证了两岸关键性的滑块抗滑稳定安全系数均满足设计要求.超载法计算分析成果表明,杨房沟拱坝起裂超载系数在1.6左右,拱坝强度超载系数为4.5~5.0,与国内同等规模拱坝水平相当.在地震作用下,拱坝变形和应力与国内同等工程相类似,坝肩可能滑动块体抗震稳定性满足要求.综上所述,杨房沟高拱坝在正常工况、超载工况及地震工况下均具有较好的整体安全性.
채용삼유비선성유한원법,모의료양방구공패패체、패기암체급주요단층결구면,대패체진행료위이응력분석,병결합삼유겁한평형법분석,대패견관건성적가능활동괴체진행료유한원법항활은정분석,론증료량안관건성적활괴항활은정안전계수균만족설계요구.초재법계산분석성과표명,양방구공패기렬초재계수재1.6좌우,공패강도초재계수위4.5~5.0,여국내동등규모공패수평상당.재지진작용하,공패변형화응력여국내동등공정상유사,패견가능활동괴체항진은정성만족요구.종상소술,양방구고공패재정상공황、초재공황급지진공황하균구유교호적정체안전성.
Three-dimensional nonlinear finite element analyses are carried out on the arch dam in Yangfanggou Hydro -power Station , in which the arch dam , the rock foundation and major fault structural planes are simulated.The stability of the dam abutment is then analyzed by the three-dimensional limit equilibrium method.Results show that the crack ini-tiation and ultimate strength overload coefficients of the arch dam are 1.6 and 4.5~5.0 respectively, which are of the same level as similar arch dams in China.Under the earthquake condition , deformation and stresses of the dam body are similar to other arch dams.The stability of the dam abutment against sliding also meets the design requirement.In con-clusion , the Yangfanggou arch dam is of good global safety levels under the normal , overload and earthquake conditions.