东庄水利枢纽拱坝混凝土温控措施敏感性分析  

Sensitivity analysis of temperature control measures for arch dam concrete in the Dongzhuang Water Conservancy Hub

作　　者：孙淑贞 任培琦 张波 SUN Shuzhen;REN Peiqi;ZHANG Bo(Shaanxi Dongzhuang Water Conservancy Project Construction Co.,Ltd.,Xi’an 710011,China;Xi’an University of Technology,Xi’an 710048,China;Power China Central Investment Co.,Ltd.,Wuhan 430050,China)

机构地区：[1]陕西省东庄水利枢纽工程建设有限责任公司,陕西西安710011 [2]西安理工大学,陕西西安710048 [3]中国电建集团华中投资有限公司,湖北武汉430050

出　　处：《水利建设与管理》2025年第1期55-60,48,共7页Water Conservancy Construction and Management

基　　金：陕西水利科技项目(2019slkj-B 2,2021slkj-3)。

摘　　要：混凝土坝在施工过程中会受到环境温度、混凝土的配比、浇筑速度、散热条件等多种因素的影响,可能导致混凝土内部产生热应力,进而引发裂缝。为确保混凝土坝的质量和安全,需采取一系列措施来控制温度和防止裂缝产生。东庄水利枢纽拱坝是坝高230m的双曲高拱坝,结构受力复杂,施工中温控防裂显得尤为重要。本文结合国内外拱坝混凝土温控防裂研究成果和工程实践经验,采用三维有限元法对东庄水利枢纽拱坝大体积混凝土的温度场进行仿真计算分析,通过单坝段的温控参数敏感性分析,推荐可行的配套温控措施,确保大坝混凝土具有较高的抗裂安全性。Concrete dams are influenced by various factors during construction,such as ambient temperature,concrete mix proportions,pouring speed,and heat dissipation conditions,all of which can generate thermal stress within the concrete and potentially lead to cracking.To ensure the quality and safety of concrete dams,a series of measures must be implemented to control temperature and prevent cracking.The Dongzhuang Water Conservancy Hub arch dam is a 200-meter-high double-curvature arch dam with complex structural stress conditions,making temperature control and crack prevention particularly critical during construction.This paper integrates domestic and international research on temperature control and crack prevention for concrete arch dams,along with practical engineering experience.Using a three-dimensional finite element method,the study simulates and analyzes the temperature field of the large-volume concrete in the Dongzhuang arch dam.Through sensitivity analysis of temperature control parameters for a single dam segment,feasible complementary temperature control measures are recommended to ensure high crack resistance and safety of the dam concrete.

关 键 词：混凝土温度控制 东庄水利枢纽 仿真分析 敏感性分析 

分 类 号：TV315[水利工程—水工结构工程]