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钢筋混凝土地下粮仓仓壁承受土压力、水压力及结构自重等多种荷载的作用,其承载特性复杂.采用现场检测试验方法,对仓容100t的地下试验仓进行仓壁侧压力及仓壁结构受力检测试验.采用Rankine土压力理论比较静止、主动和被动土压力大小,对比仓壁侧压力的理论计算结果与实测结果,分析确定了钢筋混凝土地下粮仓仓壁土压力取值方法.分别采用圆柱壳模型分析法和有限元分析法计算地下试验仓仓壁竖向弯矩和环向力,研究钢筋混凝土地下粮仓仓壁结构受力特性,分析仓壁竖向弯矩和环向力分布规律,对比理论计算结果与实测结果后指出:仓壁土压力取值方法合理;仓壁结构受力的圆柱壳模型分析法和有限元分析法结果均与试验结果吻合较好;但仓壁与仓顶、仓底连接处因边缘约束效应的影响,受力状况比较复杂,建议采用有限元分析法对结构关键部位进行精细化受力分析.
Reinforced concrete underground silo wall to withstand earth pressure, water pressure and self-weight structure such as the role of a variety of load bearing characteristics of the complex. Using on-site testing methods to test the underground storage warehouse 100t warehouse wall pressure and warehouse wall structure Force test.Using Rankine’s earth pressure theory to compare static, active and passive soil pressure, comparing theoretical calculation results and measured results of silo side pressure, the method of obtaining earth pressure on silo wall of reinforced concrete underground was analyzed and determined.Using cylindrical shell Model analysis method and finite element analysis method to calculate the vertical bending moment and hoop force of the underground test warehouse wall, study the force characteristics of the warehouse wall structure of the reinforced concrete underground silo, analyze the distribution rules of vertical bending moment and hoop force of the warehouse wall, The theoretical calculation results and the measured results indicate that: the reasonable value of the earth pressure on the silo wall is reasonable; the results of the cylindrical shell model analysis and the finite element analysis of the silo wall structure are in good agreement with the experimental results; however, Due to the influence of the edge restraint effect at the bottom connection, the stress conditions are complicated. It is suggested that the finite element analysis be used to finely structure the key parts of the structure Stress Analysis.