摘要
新疆北部山区地处西北寒冷干旱地区,碾压混凝土坝在温度场和温度应力场时空分布规律方面具有独特的特点。结合具有较好代表性的新疆北部山区某高碾压混凝土重力坝工程为实例,研究了寒冷干旱地区碾压混凝土重力坝温度场及温度应力场时空分布规律。坝体越冬层上下游面附近存在较大拉应力超标,因此表面保温特别是越冬层顶面及上下游棱角部位的保温是防裂的关键。
As the north mountain area of Xinjiang is located in the cold and arid area,the distribution laws of temperature and thermal stress of the RCC dam is rather unique. Based on a RCC project in the north of Xinjiang,this paper studies on the temporal and spatial distribution laws of temperature and thermal stress of the RCC gravity dam in the cold and arid area. Because there are large stress concentrations near the dam upstream and downstream faces of the over-winter layer,insulation of the dam surface,especially at the top surface of the over-winter layer and corners of the dam upstream and downstream faces,is essential to prevent cracks from occurring.
出处
《电网与清洁能源》
2014年第4期98-101,共4页
Power System and Clean Energy
基金
国家高等学校博士点专项研究基金(20106504110005)
新疆水利水电工程重点学科基金资助项目(xjzdxk-2010-02-12)~~
