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为了研究土中浅埋粮仓仓壁结构的受力状况,应用地层结构模型分析了浅埋地下粮仓空间结构与土体的相互作用。推导了轴对称薄壁一维杆单元刚度短阵公式,编写了非线性轴对称地下结构计算程序。土体的本构关系采用邓肯——张模型,并考虑偏应力历史影响,应用该程序对河南省信阳、巩县地区地下粮仓工程进行了结构计算,并对仓壁不同边坡进行了分析研究。本文提出了浅埋土中粮仓结构仓壁的位移、应力的变化规律及土体的变形特征,分析了不同仓壁边坡的受力状况,对土中浅埋粮仓的设计与施工提出了一些看法,供设计及施工部门参考。
In order to study the stress conditions of shallow granary silo structures in soils, the interaction between the spatial structure of shallow granary silos and the soil was analyzed using a stratigraphic structure model. The formula of axisymmetric thin-walled one-dimensional rod element stiffness formulas was deduced, and a nonlinear axisymmetric underground structure calculation program was compiled. The constitutive relation of the soil is Duncan-Chang model, and considering the historical influence of deviatoric stress, this program was used to calculate the structure of underground granaries in Xinyang and Gongxian districts of Henan Province, and the different slopes on the silo wall were analyzed and studied. . This paper proposes the change laws of displacement and stress and the deformation characteristics of soil in the silo wall of shallow burial silos, analyzes the stress conditions of different silo wall slopes, and proposes some design and construction of shallow granary in soil. Views for design and construction department reference.