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Temperature control and cracking prevention in coastal thin-wall concrete structures
Authors:Li-xia GUO  Xiao-hong BAI  Ling ZHONG  Sheng QIANG
Affiliation:1. Faculty of Water Conservancy Engineering, North China University of Water Conservancy and Electric Power,Zhengzhou 450011, P R. China
2. College of Planning and Architectural Engineering, Henan University of Science and Technology,Luoyang 471003, P R. China
3. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P. R. China
Abstract:A three-dimensional finite element program for thermal analysis of hydration heat in concrete structures with a plastic pipe cooling system is introduced in this paper. The program was applied to simulation of the temperature and stress field of the Cao'e Sluice during the construction period. From the calculated results, we can find that the temperature and stress of concrete cooled with plastic pipes are much lower than those of concrete without pipes. Moreover, plastic pipes could not be corroded by seawater. That is to say, a good effect of temperature control and cracking prevention can be achieved, which provides a useful reference for other similar nearshore concrete projects.
Keywords:coastal structures  plastic pipe cooling  temperature control  cracking prevention  steel corrosion  
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