Simulation of thermal stress and control measures for rock-filled concrete dam in high-altitude and cold regions

Zhang Yuxiang; Pan Jianwen; Sun Xinjian; Feng Jijun; Sheng Dengqiang; Wang Haiyun; Zhou Xinjie; He Yinpeng; Diao Mushuang; Zhan Qibing

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Simulation of thermal stress and control measures for rock-filled concrete dam in high-altitude and cold regions

机译：高空和寒冷地区岩石填充混凝土坝热应力和控制措施的仿真

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摘要

High-altitude and cold regions (HACR) have extremely low temperatures accompanied by frequent cold currents in winter, causing significant thermal stress and cracking in concrete structures. Based on previous studies, by using ABAQUS as the development platform and FORTRAN as the development tool, a calculation program for temperature fields during concrete dam construction and operation processes was established to test the accuracy of the program. Jinqiao Rock-filled Concrete (RFC) Gravity Dam, located in HACR of Tibet, China, is as an example to simulate the thermal stress under three working conditions. The results show that: (1) the hydration temperature rise of RFC is lower than that of normal concrete; the use of RFC can reduce the temperature and thermal stress of the concrete dam. (2) In HACR, installing an insulation layer on the surface of the dam body can significantly increase the surface temperature and reduce its difference and tensile stress, meeting the requirements of temperature control and crack prevention.

机译：高空和寒冷地区（HACR）具有极低的温度，冬季频繁的耐冷速，在混凝土结构中引起显着的热应力和裂缝。基于以前的研究，通过使用ABAQUS作为开发平台和FORTRAN作为开发工具，建立了混凝土坝施工和操作过程中温度场的计算程序，以测试程序的准确性。金桥填充混凝土（RFC）Gravity Dam，位于中国西藏HACR，是在三个工作条件下模拟热应力的示例。结果表明：（1）RFC的水化温度升高低于正常混凝土; RFC的使用可以降低混凝土坝的温度和热应力。（2）在HACR中，在坝体的表面上安装绝缘层可以显着提高表面温度并降低其差异和拉伸应力，满足温度控制和防爆的要求。

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来源
《Engineering Structures》 |2021年第1期|111721.1-111721.10|共10页
作者
Zhang Yuxiang; Pan Jianwen; Sun Xinjian; Feng Jijun; Sheng Dengqiang; Wang Haiyun; Zhou Xinjie; He Yinpeng; Diao Mushuang; Zhan Qibing;
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作者单位

Qinghai Univ Xining 810016 Qinghai Peoples R China;

Tsinghua Univ State Key Lab Hydrosci & Engn Beijing 100084 Peoples R China;

Qinghai Univ Xining 810016 Qinghai Peoples R China;

Tibet Dev & Investment Jinqiao Hydropower Co Ltd Jiali 852400 Peoples R China;

Tibet Dev & Investment Jinqiao Hydropower Co Ltd Jiali 852400 Peoples R China;

Tibet Dev & Investment Jinqiao Hydropower Co Ltd Jiali 852400 Peoples R China;

Qinghai Univ Xining 810016 Qinghai Peoples R China;

Qinghai Univ Xining 810016 Qinghai Peoples R China;

Qinghai Univ Xining 810016 Qinghai Peoples R China;

Wuhan Univ Sch Water Resources & Hydropower Engn Wuhan 430072 Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
High-altitude and cold region; Rock-filled concrete gravity dam; Finite element method; Thermal stress; ABAQUS subroutine;

机译：高空和寒冷地区;岩石填充混凝土重力坝;有限元法;热应力;ABAQUS子程序;

Simulation of thermal stress and control measures for rock-filled concrete dam in high-altitude and cold regions

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