Study On Coordinating Action Theory Of Ground, Foundation And Structure Of Building In Mining Area And Its Application

Based on field survey, similarity material experiment, numerical simulation and theoretical analysis, this dissertation synthesizes the knowledge of many disciplines such as mining subsidence, mine rockmass mechanics, material mechanics and advanced mathematics and etc., and establishes coordinating action mechanic model of ground, foundation and structure of building in mining area. This model can be used to calculate the movement, deformation and various additional stress such as ground reaction force, bending moment, shearing force and horizontal action of building in mining area. The corresponding calculation programs have been developed so as to provide theoretical base and calculation instrument for future building protecting and designing in mining area. This dissertation also systematically studies the relationship between building movement deformation and ground movement deformation, analyzes the varying pattern of building various additional action force under the effect of different factors. Based on field surveying data, the dissertation establishes many relation formulas between different kinds of building fissure width and various kinds of deformation of ground surface, draws relation figures for different length-height ratios building damage grade evaluation and puts forward the concept of house fissure angle. On the basis of the above research findings, new protective measures concerning buildings in mining area are proposed and application study of practical case is conducted.