【摘要】：錦屏一級拱壩壩高305 m,運用有限元仿真分析方法模擬了錦屏一級特高拱壩自第一倉混凝土澆筑至蓄水運行全過程,基于監(jiān)測資料對后期發(fā)熱溫升、壩體與基礎(chǔ)彈性模量等主要熱力學參數(shù)進行了反演分析,并對下一階段蓄水的工作性態(tài)進行了預(yù)測。計算結(jié)果表明,錦屏一級拱壩后期發(fā)熱溫升約為5~6℃,短期蓄水過程中混凝土和地基彈性模量約為設(shè)計初始值的1.65倍左右。在水位上升至1 880 m時,徑向最大變形出現(xiàn)在1 730.0 m高程的PL13-4監(jiān)測點。預(yù)測值與監(jiān)測值吻合較好,證明仿真分析成果能基本反映大壩實際工作性態(tài),分析結(jié)果也為其他特高拱壩的設(shè)計提供了參考。
[Abstract]:The dam height of Jinping first grade arch dam is 305 m. The whole process of concrete pouring from the first storehouse to the storage of the dam is simulated by using the finite element simulation analysis method. Based on the monitoring data, the temperature rise of the later stage is analyzed. The main thermodynamic parameters such as elastic modulus of dam and foundation are inversed and the working behavior of water storage in the next stage is predicted. The results show that the temperature rise of the first grade arch dam is about 5 ~ 6 鈩，

本文編號：2226821