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溢洪道控制段结构单薄,弧门水推力较大,工程又地处严寒。因此,在综合分析结构受力状况、混凝土温度应力及温控措施时,统计分析光弹试验成果,采用有限元计算方法等,提出了控制牛腿斜裂缝设计安全系数K_f和剪跨比μ_0分别取1.5和0.25;牛腿闸墩斜拉筋分两个扇区布置,第一扇区拉力全部由钢筋承担,第二扇区混凝土和钢筋分别承担70％和30％;泄水闸隔孔开启时,挡水侧堰体强度靠配筋解决;混凝土温控采用分缝分块薄层浇筑,加强养护及表面保护的综合措施。
Spillway control section structure is thin, larger arc gate thrust, the project is located in the cold. Therefore, in the comprehensive analysis of the stress state of the structure, the temperature stress of concrete and the temperature control measures, the results of the photoelastic test are statistically analyzed and the finite element method is used to calculate the design safety factor K_f and the shear span ratio μ_0 Take 1.5 and 0.25; cowhide pier diagonal two-sector layout, the first sector pull all bear by the steel, the second sector of concrete and steel bear 70% and 30% respectively; , The strength of the weir side of the weir is solved by the reinforcement; the temperature control of the concrete is subdivided into layers and thin layers, so as to strengthen the comprehensive measures of conservation and surface protection.