Mechanism study on subsoil-strap footing-framework interaction in mining subsidence area

By applying the theory of structural mechanics,mine exploitation subsidence science,soil mechanics,and material mechanics synthetically,the mechanical model of ground-strap footing-framework interaction in mining subsidence area was established.Influence factors such as the dynamic effect of the ground deformation on the structure during the forming process of exploitation basin,the length of the frame structure and its foundation were comprehensively considered in this model.The effect of the deformation of structure and internal force during exploitation was theoretically analyzed,and equations to calculate the deformation of structure and various additional internal forces in mining subsidence area were derived.Validated by actual examples,these expressions provided theoretical arguments and calculative facilities for the protection,reinforcement and design of frame structures in mining subsidence area.