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To solve the problem that temperature cracks appear easily on lining concrete construction in summer of the large section tunnel.Taking Xiluodu hydropower station diversion tunnel for an example,ANSYS finite element simulation software is used to analyze the temperature control effect in different pouring ways under different conditions,and the reasonable temperature control program is given.The results show that pouring whole in one time can not prevent temperature cracks;the temperature changes little that pouring whole in twice time,but the maximum tensile stress of the representative points is reduced effectively,especially the first main stress of the middle point in lining concrete,which meets the requirements of prevention cracks for lining concrete.So,the lining concrete can prevent temperature cracks as the specification claim with the later pouring way,as well as there is no more excess security and it is relative economic.
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Basic Information:
DOI：10.20040/j.cnki.1000-7709.2013.03.024
China Classification Code:TV554.14
Citation Information:
[1]ZOU Kaifang,DUAN Yahui(State Key Laboratory of Water Resources and Hydropower Engineering,Wuhan University,Wuhan 430072,China).Study of Effect of Thermal Control on Lining Concrete of Diversion Tunnel of Xiluodu Hydropower Station that Pouring Concrete by Stage in Summer[J].Water Resources and Power,2013,31(03):90-93+138.DOI:10.20040/j.cnki.1000-7709.2013.03.024.
2013-03-25
2013-03-25