CAJ | 학술논문

温度是混凝土坝的主要荷载之一,不利的温度荷载导致坝体产生裂缝,特别在运行期,不利水压荷载与温度荷载的组合使得裂缝进一步扩展,严重危害大坝安全运行。石漫滩碾压混凝土重力坝裂缝严重,尤其是部分坝段存在有规律的横向裂缝。现采用大型通用有限元软件ANSYS,依据石漫滩水库的水温和气温等监测资料,分析了大坝运行期的温度场和温度应力场,从温度效应角度揭示了该坝横向裂缝产生和发展的主要原因及其危害,为大坝加固处理提供技术支撑。
온도시혼응토패적주요하재지일,불리적온도하재도치패체산생렬봉,특별재운행기,불이수압하재여온도하재적조합사득렬봉진일보확전,엄중위해대패안전운행。석만탄년압혼응토중력패렬봉엄중,우기시부분패단존재유규률적횡향렬봉。현채용대형통용유한원연건ANSYS,의거석만탄수고적수온화기온등감측자료,분석료대패운행기적온도장화온도응력장,종온도효응각도게시료해패횡향렬봉산생화발전적주요원인급기위해,위대패가고처리제공기술지탱。
Temperature is one of the main loads of concrete dam, and the adverse temperature load can cause cracks in the dam, especialy during the operation period, the combinat ion of unfavorable hydraulic pressure load and temperature load can expand the cracks, resulting in the damage for the dam safety operation. The Shimantan RCC gravity dam has serious cracks, and regu-lar transverse cracks occur in several sections of the dam. Based on the observed water temperature and air tem perat ure data of the Shimantan reservoir, the large general finite element software ANSYS was used to analyze the temperature field and temper-ature stress field of the dam during the operation period, and to il ustrate the main reasons of the occurrence and developmentof the transverse cracks in aspectof temperature effects, which can provide technical support for reinforcementof the dam.