CAJ | 학술논문

对锦屏一级拱坝右岸坝肩采用非线性有限元分析方法,进行三维弹塑性数值模拟,通过使用多重网格法,在任意滑动面上(平面或曲面)对有限元应力计算结果进行转换,计算得到滑块体的安全系数.弹塑性计算结果表明,基本工况条件下,左岸坝肩的最小安全系数为4.88(大于3.5),出现在温降工况下1 740 m高程处;右岸坝肩的最小安全系数为3.41(小于3.5),出现在温升工况下1 710 m高程处.该结果表明对右岸坝肩采取一定的加固措施是有必要的.
대금병일급공패우안패견채용비선성유한원분석방법,진행삼유탄소성수치모의,통과사용다중망격법,재임의활동면상(평면혹곡면)대유한원응력계산결과진행전환,계산득도활괴체적안전계수.탄소성계산결과표명,기본공황조건하,좌안패견적최소안전계수위4.88(대우3.5),출현재온강공황하1 740 m고정처;우안패견적최소안전계수위3.41(소우3.5),출현재온승공황하1 710 m고정처.해결과표명대우안패견채취일정적가고조시시유필요적.
Based on nonlinear finite element analysis, 3-D elastic-plastic numerical simulation of Jin-pingⅠhigh arch dam is developed. By multi-grid method, the stress result of FEM could transfer on any sliding surface (plane or surface), and the safety factors of sliding blocks could be obtained. The elas-tic-plastic calculation results indicate that the minimal safety factor of the left abutment under basic condition is 4.88 (larger than 3.5), which appears on the 1 740 m elevation under temperature drop con-dition, and the minimal safety factor of the right abutment under basic condition is 3.41 (less than 3.5), appearing on the 1 710 m elevation under temperature rise condition, which means it is necessary to take reinforcement measures for right abutment.