摘要
针对雅砻江杨房沟水电站拱坝混凝土温控防裂,根据坝址气候条件、拱坝结构特征、混凝土施工条件、混凝土材料特性等基本参数,分析了拱坝温控设计的气温、水温边界条件,提出了温度控制标准,并研究了温控防裂措施。通过对拱坝混凝土施工期温度控制仿真计算,分析了拱坝混凝土从浇筑至拱坝封拱后的温度场、温度应力状态及变化历程,评价了拱坝混凝土各时期的抗裂安全状态,推荐了温控措施综合方案。研究结果可为拱坝混凝土温控设计、施工提供参考。
Aiming at the concrete temperature control and crack resistance of the arch dam of Yangfanggou Hydropower Station on the Yalong River,on the basis of the climatic conditions of the dam site and structural characteristics of the arch dam,the concrete construction conditions and concrete material properties,the air temperature and water temperature boundary conditions of the arch dam temperature control design were analyzed,the temperature control standard was proposed and the temperature control and crack prevention measures were studied.Through simulation calculation of temperature control during arch dam concrete construction,the temperature field,temperature stress state and variation of the arch dam concrete from pouring to arch dam sealing were analyzed.The anticracking safety status of arch dam concrete in various periods was evaluated,and a comprehensive program of temperature control measures were recommended,which provided reference for arch dam concrete temperature control design and construction.
作者
郭传科
刘西军
殷亮
黄熠辉
GUO Chuanke;LIU Xijun;YIN Liang;HUANG Yihui(PowerChina,Huangdong Engineering Corporation Limited,Hangzhou 311122,China)
出处
《水利水电快报》
2021年第6期31-34,共4页
Express Water Resources & Hydropower Information
关键词
拱坝
混凝土
温控
防裂
雅砻江
杨房沟水电站
arch dam
concrete
temperature control
crack control
Yangfanggou Hydropower Station
