高寒大温差对高拱坝工作性态影响及应对措施  

Study on the Influence of Severe Cold and High Temperature Differences on the Working Behavior of High Arch Dams and the Preliminary Solution

作　　者：刘毅[1,2,3] 杨波[3] 程恒[2,3] 周秋景[2,3] 张国新[1,3] 张秀崧[4] 李海涛[5] LIU Yi;YANG Bo;CHENG Heng;ZHOU Qiujing;ZHANG Guoxin;ZHANG Xiusong;LI Haitao(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Key Laboratory of Construction and Safety of Hydraulic Engineering of Ministry of Water Resources,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Department of Structure and Materials,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;China Water Resources Beifang Investigation,Design and Research Co.,Ltd.,Tianjing 300222,China;Xinjiang Ertix River Basin Development Engineering Construction Management Bureau,Urumqi 830000,Xinjiang,China)

机构地区：[1]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038 [2]中国水利水电科学研究院水利部水工程建设与安全重点实验室,北京100038 [3]中国水利水电科学研究院结构材料研究所,北京100038 [4]中水北方勘测设计研究有限责任公司,天津300222 [5]新疆额尔齐斯河流域开发工程建设管理局,新疆乌鲁木齐830002

出　　处：《水力发电》2021年第10期37-44,共8页Water Power

基　　金：国家重点研发计划项目(2018YFC0406703);国家自然科学基金项目(51779277,51779276);中国水科院科研专项(SS0-145B612017,SS0145B392016);流域水循环模拟与调控国家重点实验室自主研究课题(SKL2020ZY10)。

摘　　要：高纬度寒冷地区具有年均气温低、负温时间长、年内温差大等特点,给高拱坝的安全建设带来了极大的挑战。结合QBT拱坝的建设需求,分析了高纬度寒冷地区的气象特点,系统研究了高寒区混凝土拱坝与气候温和区混凝土拱坝的性态差异。并基于对高寒区高拱坝工作性态的认识,阐明了高寒区高拱坝施工运行过程中的开裂风险,从体形结构、混凝土材料、施工期温度控制、蓄水运行期控制措施等方面提出了高寒区混凝土坝全过程防裂的新理念。研究成果为QBT拱坝的深化设计提供了依据,也可为高寒地区其他高拱坝设计提供参考。The high latitude and cold regions have the characteristics of low average annual temperature,long negative temperature period and large annual temperature difference,which bring great challenges to the safety of high arch dams construction.Combined with the construction demands of QBT arch dam,the meteorological characteristics of the high latitude and cold region is analyzed and the differences of the concrete arch dams properties between in the high latitude and cold region and in the low latitude and mild region are systematically studied.Based on the understanding of the working behavior of high arch dam in the high latitude and cold region,the cracking risks in the construction and operation of high arch dam in the high latitude and cold region are expounded,and a new idea of preventing the cracks in the whole process of the concrete dam is put forward from the aspects of shape structure,concrete material,temperature control during the construction period and control measures during the storage operation period.The research results provide a basis for the further design of QBT arch dam,and also provide a reference for the design of other high arch dams in the high latitude and cold region.

关 键 词：高寒大温差 高拱坝 工作性态差异 全过程防裂 

分 类 号：TV431[水利工程—水工结构工程]