摘要
结合某拱坝的仿真计算讨论了中小拱坝不分缝分块,利用一个低温季节浇筑的可能性及应采取的温控措施.结果表明,碾压混凝土冬季施工方案、碾压混凝土加河水冷却和常态混凝土外掺MgO方案都不能完全解决温度应力问题而避免裂缝的发生.常态混凝土、掺适量MgO另加河水水管冷却可望使中小混凝土拱坝在一个冬季完工而不发生危害性裂缝.
The stresses in the high concrete dams are influenced remarkablely by the process of construction.Methods are proposed to compute the stresses in the high concrete dams simulating the construction process.
出处
《水利水电技术》
CSCD
北大核心
2002年第12期19-22,共4页
Water Resources and Hydropower Engineering
关键词
拱坝
仿真分析
微膨胀混凝土
温度控制
concrete dam
simulating analysis
complex compound-layer element
uniform compound-layer element
algorithm of different step-length in different regions
equivalent heat conduction equation considering the effect of pipe cooling
