现浇渡槽槽身混凝土裂缝成因分析及控制措施  

Cause Analysis and Control Measures of Cracks in Cast-in-place Aqueduct Body Concrete

作　　者：陈汉法 刘安宇 CHEN Hanfa;LIU Anyu(Hubei Dayu Construction Co., Limited by Shares, Wuhan 430000, China)

机构地区：[1]湖北大禹建设股份有限公司,湖北武汉430000

出　　处：《水电与新能源》2022年第5期17-21,24,共6页Hydropower and New Energy

摘　　要：基于现浇三向预应力混凝土矩形渡槽产生裂缝的成因分析及控制措施探索,通过采取各种相应的有效措施,严格控制混凝土的入仓浇筑温度、混凝土中心最高温度和槽身混凝土的内外温差、槽身表面和环境的温差,较好地解决了现浇大跨度、大体积矩形渡槽槽身混凝土的裂缝问题。To control the concrete cracks in cast-in-place three-dimensional pre-stressed rectangular aqueduct,possible causes of the cracks are analyzed.Then,corresponding control measures are proposed,including the strict control of the pouring temperature,the maximum temperature in the concrete center,the temperature difference between the internal and external concrete,and the temperature difference between the aqueduct body and the environment.With these measures,the crack problem of the concrete in cast-in-place large-span and large-volume rectangular aqueduct is effectively solved.

关 键 词：现浇 三向预应力矩形渡槽 裂缝 成因分析 控制措施 

分 类 号：TV672.3[水利工程—水利水电工程]