期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：5
页码：1-7
DOI：10.1088/1755-1315/304/5/052045
出版社：IOP Publishing
摘要：Large pumping stations have the characteristics of complex structure, large amount of concrete pouring block, easy cracking of concrete and long construction period, etc. For the stress safety of the flow channel structure during construction period, temperature control simulation for a large pumping station during construction period is carried out. By comparing and analyzing the variation law of temperature field and stress field of the two types of pouring layers which are one 6m layer and two 3m layers, the influence of thick-layer pouring on concrete stress is studied. The simulation results show that thick-layer pouring may cause the increasement of tensile stress peak in concrete structure, but this adverse effect can be eliminated by appropriate temperature control measures. The effect of the same temperature control measures on the reduction of tensile stress of thick-layer concrete structure is more obvious. Thick-layer pouring can shorten the construction cycle of pumping station under the premise of ensuring safety which has a wide application prospect in the field of concrete construction.
