水利水电技术2017，Vol.48Issue(6)：27-31,5.DOI:10.13928/j.cnki.wrahe.2017.06.006
厚倒丁字型高强度混凝土墩墙施工期水管冷却温控效果研究
Study on temperature control effect with pipe-cooling of thick inverted T-shaped concrete pier-wall during construction
唐巨山1
作者信息
- 1. 浙江省水利水电勘测设计院,浙江杭州310002
- 折叠
摘要
Abstract
In order to make a reasonable pipe-cooling scheme,the changing laws of temperature and stress of high strength thick inverted T-shaped concrete structure under the cooling conditions of cooling without pipe,cooling with single-row pipe and cooling with double-row pipes are calculated based on ANSYS finite element simulation,and then the anti-cracking effects from the temperature controls during the construction period are discussed herein as well.The study result shows that after adopting the schemes of the coolings with single-row pipe and double-row pipes,the temperature differences between both the inside and the outside of the high strength concrete pier-wall are decreased by 42％ and 90％ respectively,the early outer surface stresses are reduced by over 40％ and 80％ respectively,the late inner stresses are reduced by over 20％ and 75％ respectively.Therefore,the effect from the cooling with double-row pipes is obviously better than that from the single-row pipe,thus can effectively avoid the risk from the cracking of the concrete pier-wall.The result shows that the cooling pipes must be more closely arranged and the spaces among the pipes are better within 1 m during the construction period of the thick inverted T-shaped concrete structure.关键词
混凝土/水管冷却/温控/厚倒丁字型墩墙Key words
concrete/pipe-cooling/temperature control/thick inverted T-shaped pier-wall分类
建筑与水利引用本文复制引用
唐巨山..厚倒丁字型高强度混凝土墩墙施工期水管冷却温控效果研究[J].水利水电技术,2017,48(6):27-31,5.
