复合地基上钢筋混凝土板的冲击应变分析

为研究三江源地区复合地基上的钢筋混凝土板在冲击荷载作用下的变形特征,本文建立了地基与钢筋混凝土板冲击接触作用的分析模型.地基采用Extended Drucker-Prager模型,钢筋混凝土板使用Concrete Damage Plasticity损伤塑性本构模型.采用显式有限元分析方法计算了特殊地基与板的相互作用的位...

Impact Strain Analysis of Reinforced Concrete Slab on Composite Foundation

In order to study the deformation characteristics of the reinforced concrete slab on the composite foundation in the Sanjiangyuan area under the impact load,an analysis model of the impact contact between the foundation and the reinforced concrete slab is established in this paper.The foundation adopts the Extended Drucker-Prager model,and the reinforced concrete slab adopts the Concrete Damage Plasticity damage plastic constitutive model.The displacement field and stress field of the interaction between the special foundation and the slab are calculated by the explicit finite element analysis method.The numerical calculation results show that:under the action of impact load,the free reinforced concrete slab on the four sides of the elastic-plastic composite foundation is subjected to compressive stress at the top,while the bottom is subjected to tensile stress;the settlement of the composite foundation mainly occurs in the range of contact with the slab;The depth range is 0.0m-1.2m from the foundation surface;the maximum stress in the vertical direction of the reinforced concrete slab appears symmetrically at 1/3 of the height from the bottom of the slab.