摘要
通过模拟陶岔渠首枢纽工程引水闸结构的施工建造过程,分析引水闸孔顶水平向拉应力较大的原因。认为引水闸结构孔顶出现较大的拉应力是施工期温度应力过大所致,产生原因是施工间歇期过长,解决办法是尽可能安排孔顶上方混凝土按正常间歇期（7~14 d）浇筑,避免出现长间歇期。提出：如果孔顶至158 m高程混凝土不能确保在2012年3月前完成浇筑,就应推迟到2012年5~6月浇筑。通过这样处理,可以解决孔顶施工期温度应力过大的问题。
Through simulation of construction process of water diversion sluice at Taocha canal head of Middle Route Project of S-N Water Diversion,the causes of larger horizontal tensile stress at top part of the sluice hole are analyzed.The results show that the temperature stress is the larger tensile stress during construction stage and it is caused by long construction intermission;the problem of larger tensile stress can be solved by shortening concrete pouring intermission（7~14 d）.It is suggested that the concrete pouring for the part that from the top of sluice hole to El.158 m should be postponed to May-June of 2012 if concrete pouring can not be completed before March,2012.
出处
《人民长江》
北大核心
2010年第10期34-37,共4页
Yangtze River
基金
"十一五"国家科技支撑计划重大项目(2006BAB04A01)
关键词
仿真计算
温度应力
间歇期
陶岔渠首引水闸
simulation calculation
temperature stress
construction intermission
diversion sluice at Taocha canal head
