A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill Concrete
In the present study, we investigate the effect of the adiabatic temperature rise property of rock-fill concrete (RFC) on the temperature stress and crack resistance of RFC gravity dams. We conducted tests on the adiabatic temperature rise of RFC with a rock-fill ratio of 42%, 49%, and 55%, respecti...
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Series: | Mathematical Problems in Engineering |
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doaj-ea9be579aeba40b6829c34b2c06b070f2020-11-24T21:47:45ZengHindawi LimitedMathematical Problems in Engineering1024-123X1563-51472018-01-01201810.1155/2018/39649263964926A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill ConcreteXiaofei Zhang0Qian Liu1Xin Zhang2Yanlong Li3Xiaoping Wang4State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaChina Hydropower Consulting Group, Northwest Institute of Survey and Design, Xi’an 710075, ChinaIn the present study, we investigate the effect of the adiabatic temperature rise property of rock-fill concrete (RFC) on the temperature stress and crack resistance of RFC gravity dams. We conducted tests on the adiabatic temperature rise of RFC with a rock-fill ratio of 42%, 49%, and 55%, respectively. Based on the regression analysis of the test data, a calculation model of the adiabatic temperature rise, considering the rock-fill ratio, is developed, and the finite element analysis software ANSYS is employed to simulate the whole process of the temperature and temperature stress fields of a RFC gravity dam. The main findings of the study are as follows: (1) Both the adiabatic temperature rise rate and the final adiabatic temperature rise of RFC are negatively correlated with the rock-fill ratio. (2) The calculation model of the adiabatic temperature rise of RFC is characterized by its high accuracy, which can help predict the adiabatic temperature rise of RFC with different rock-fill ratios. (3) Without any temperature control measures, the maximum temperature stress of RFC generated by the temperature rise of hydration heat in the RFC gravity dam is 0.93 MPa, which meets the standard of temperature stress control. The results of the present study indicate that dam construction with RFC can simplify the measures of temperature control and crack prevention, improve the construction efficiency, and reduce the cost of dam construction.http://dx.doi.org/10.1155/2018/3964926 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaofei Zhang Qian Liu Xin Zhang Yanlong Li Xiaoping Wang |
spellingShingle |
Xiaofei Zhang Qian Liu Xin Zhang Yanlong Li Xiaoping Wang A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill Concrete Mathematical Problems in Engineering |
author_facet |
Xiaofei Zhang Qian Liu Xin Zhang Yanlong Li Xiaoping Wang |
author_sort |
Xiaofei Zhang |
title |
A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill Concrete |
title_short |
A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill Concrete |
title_full |
A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill Concrete |
title_fullStr |
A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill Concrete |
title_full_unstemmed |
A Study on Adiabatic Temperature Rise Test and Temperature Stress Simulation of Rock-Fill Concrete |
title_sort |
study on adiabatic temperature rise test and temperature stress simulation of rock-fill concrete |
publisher |
Hindawi Limited |
series |
Mathematical Problems in Engineering |
issn |
1024-123X 1563-5147 |
publishDate |
2018-01-01 |
description |
In the present study, we investigate the effect of the adiabatic temperature rise property of rock-fill concrete (RFC) on the temperature stress and crack resistance of RFC gravity dams. We conducted tests on the adiabatic temperature rise of RFC with a rock-fill ratio of 42%, 49%, and 55%, respectively. Based on the regression analysis of the test data, a calculation model of the adiabatic temperature rise, considering the rock-fill ratio, is developed, and the finite element analysis software ANSYS is employed to simulate the whole process of the temperature and temperature stress fields of a RFC gravity dam. The main findings of the study are as follows: (1) Both the adiabatic temperature rise rate and the final adiabatic temperature rise of RFC are negatively correlated with the rock-fill ratio. (2) The calculation model of the adiabatic temperature rise of RFC is characterized by its high accuracy, which can help predict the adiabatic temperature rise of RFC with different rock-fill ratios. (3) Without any temperature control measures, the maximum temperature stress of RFC generated by the temperature rise of hydration heat in the RFC gravity dam is 0.93 MPa, which meets the standard of temperature stress control. The results of the present study indicate that dam construction with RFC can simplify the measures of temperature control and crack prevention, improve the construction efficiency, and reduce the cost of dam construction. |
url |
http://dx.doi.org/10.1155/2018/3964926 |
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