太平湾混凝土重力坝变形时空分布规律分析  

Analysis of Spatio-Temporal Distribution of Deformation in Taipingwan Concrete Gravity Dam

作　　者：荆凯 常亮 王千 常洪军 

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]太平湾发电厂,辽宁丹东118216

出　　处：《东北电力技术》2018年第1期23-26,共4页Northeast Electric Power Technology

摘　　要：太平湾大坝地处鸭绿江下游,在我国典型东北地区气候特征影响下,大坝变形时空分布既具混凝土重力坝一般规律,又有自身特殊性。通过真空激光长期观测结果分析表明,影响坝体变形的主要因素为温度荷载的变化,库水作用不明显。低温工况下,在坝型过渡区存在较明显变形差,左岸出现因水平位移"相异变形"导致的扭曲变形现象;高温工况下变形趋于协调,变形差减小或消除,左岸扭曲变形基本消失,大坝变形安全系数提高。Taipingwan dam is located in the lower reaches of the Yalu River. Under the influence of typical climate characteristics in Northeast China,the spatio-temporal distribution of dam deformation is not only the general law of concrete gravity dam,but also its own particularity. Through the long-term observation of vacuum laser,the analysis shows that the main factor affecting the deformation of the dam is the change of the temperature load,and the effect of the reservoir water is not obvious. In low temperature condition,there is obvious deformation in the transition zone of dam type,and the distortion phenomenon resulted from different deformation of horizontal displacement on the left bank. Under high temperature conditions,the deformation tends to be coordinated and the deformation difference decreases or eliminates. The distortion of the left bank basically disappears,the deformation safety factor of dam increases.

关 键 词：变形 混凝土坝 温度荷载 水荷载 

分 类 号：TV642.3[水利工程—水利水电工程]