MATEC Web Conf.
Volume 275, 20191st International Conference on Advances in Civil Engineering and Materials (ACEM1) and 1st World Symposium on Sustainable Bio-composite Materials and Structures (SBMS1) (ACEM2018 and SBMS1)
|Number of page(s)||5|
|Section||New Materials and Structural Engineering|
|Published online||13 March 2019|
Study on Temperature Control and Crack Prevention of Mass Concrete for Large Powerhouse Constructed in Cold Area
1 College of Water Conservancy and Hydropower, Hohai University, 210098 Nanjing, China
2 HydroChina Huadong Engieering Corporation Limited, 311122 Hangzhou, China
3 College of Civil Engineering, Xijing University, 710123 Xi’an, China
* Corresponding author: email@example.com
Due to complex structure, large scale, and cold climate, the temperature field and stress field during construction of BoYi Station is different with ordinary mass concrete. Therefore the corresponding crack prevention method must be explored. In order to simulate the complicated construction course, cold climate, multiple materials and unusual structure, a finite element program is adopted. In 5 numerical simulation cases, different temperature control methods are tried to decrease the tensile stress of mass concrete. Based on the simulation analysis and combined with the engineering experience, the scheme and indexes of temperature control and crack prevention are recommended. The mainly measures are controlling pouring temperature, insulation of concrete surface, pipe cooling, block partition and extra steel bar reinforcement. The values of temperature indexes are sharply lower than that of ordinary hydropower station mass concrete. The suggested measures and indexes in this paper, which are various with season, structure position and material, may provide some reference to similar large hydropower station workshop in cold area.
© The Authors, published by EDP Sciences, 2019
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