中国农村水利水电
中國農村水利水電
중국농촌수이수전
CHINA RURAL WATER AND HYDROPOWER
2015年
4期
149-152
,共4页
梁睿斌%包腾飞%许焱鑫%宋锦焘%沈寿亮%刘天祥
樑睿斌%包騰飛%許焱鑫%宋錦燾%瀋壽亮%劉天祥
량예빈%포등비%허염흠%송금도%침수량%류천상
特高拱坝%温度回升%有限元仿真%工作性态
特高拱壩%溫度迴升%有限元倣真%工作性態
특고공패%온도회승%유한원방진%공작성태
super high arch dam%temperature rise%finite element simulation%working behavior
针对特高拱坝封拱后温度回升现象,对某拱坝温度监测资料进行分析,认为温度回升是边界热传导和混凝土后期水化热共同作用的结果,并由坝体内部温度计实测温度回升过程线拟合得到混凝土后期水化热过程线。用ABAQUS对该拱坝施工及蓄水过程进行有限元仿真,结果显示计算温度场与实测温度场吻合情况较好,温度回升引起坝体明显向上游变形,并导致坝体上下游表面出现大范围拉应力区,对大坝工作性态造成了不利影响。
針對特高拱壩封拱後溫度迴升現象,對某拱壩溫度鑑測資料進行分析,認為溫度迴升是邊界熱傳導和混凝土後期水化熱共同作用的結果,併由壩體內部溫度計實測溫度迴升過程線擬閤得到混凝土後期水化熱過程線。用ABAQUS對該拱壩施工及蓄水過程進行有限元倣真,結果顯示計算溫度場與實測溫度場吻閤情況較好,溫度迴升引起壩體明顯嚮上遊變形,併導緻壩體上下遊錶麵齣現大範圍拉應力區,對大壩工作性態造成瞭不利影響。
침대특고공패봉공후온도회승현상,대모공패온도감측자료진행분석,인위온도회승시변계열전도화혼응토후기수화열공동작용적결과,병유패체내부온도계실측온도회승과정선의합득도혼응토후기수화열과정선。용ABAQUS대해공패시공급축수과정진행유한원방진,결과현시계산온도장여실측온도장문합정황교호,온도회승인기패체명현향상유변형,병도치패체상하유표면출현대범위랍응력구,대대패공작성태조성료불리영향。
Targeted at the phenomenon of temperature rise in super high arch dams after arch closure ,an analysis of monitoring data of a typical arch dam is carried out .It shows that the temperature rise is a joint result of thermal conduction from external environ‐ment and residual hydration heat .Also based on the time history curves of abundant thermometers inside the dam body ,the time his‐tory curve of residual hydration heat is fitted out .The process of construction and impounding of this arch dam is simulated by ABAQUS ,and it shows that the simulated temperature field matches well with the real temperature field .Temperature rise induces prominent deformation upward and large-scale tensile stress zone in the dam body ,which is harmful to the working behavior .