Cracking Risk Analysis of Roller Compacted Concrete Gravity Dam inConstruction Period Based on Temperature Control Simulation

doi:10.11988/ckyyb.20170455

Journal of Changjiang River Scientific Research Institute ›› 2018, Vol. 35 ›› Issue (10): 148-152.DOI: 10.11988/ckyyb.20170455

• HYDRAULIC STRUCTURE AND MATERIAL • Previous Articles Next Articles

Cracking Risk Analysis of Roller Compacted Concrete Gravity Dam inConstruction Period Based on Temperature Control Simulation

YUAN Yan-ling^1,2, PENG Song-tao³, CHEN Jian-kang^1,2, GAO Ce⁴, PEI Liang^1,2

1.State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065,China; 2.College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China;
3.Dagu Hydropower Branch of China Huadian Corporation Tibet Energy Co., Ltd., Sangri 856200,China;
4.Operation Management Bureau of China Three Gorges Corporation,Yichang 443131,China

Received:2017-04-24 Published:2018-10-01 Online:2018-10-01

Abstract

Abstract: Temperature load is the main cause of cracks in mass concrete in construction period. The cracking risk probability and reliability of a roller compacted concrete (RCC) gravity dam are calculated by Monte-Carlo method with factors affecting the cracks in mass concrete as random variables in establishing the limit state function by response surface method based on simulation of temperature control measures. Results demonstrate that the recommended temperature control measures are reasonable. Calculation results of cracking risk probability and reliability reflect that the cracking risks of feature points inside the RCC dam are higher than those exterior to the dam, and the maximum cracking risk appears in the end of the first-phase cooling stage.

Key words: RCC gravity dam, temperature control simulation, anti-cracking safety, response surface method, cracking risk, reliability

CLC Number:

TV33

YUAN Yan-ling, PENG Song-tao, CHEN Jian-kang, GAO Ce, PEI Liang. Cracking Risk Analysis of Roller Compacted Concrete Gravity Dam inConstruction Period Based on Temperature Control Simulation[J]. Journal of Changjiang River Scientific Research Institute, 2018, 35(10): 148-152.

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Cracking Risk Analysis of Roller Compacted Concrete Gravity Dam inConstruction Period Based on Temperature Control Simulation

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