Full Article: PDF
Scientific Object Identifier: http://s-o-i.org/1.1/TAS-11-79-82
DOI: https://dx.doi.org/10.15863/TAS.2019.11.79.82
Language: English
Citation: Khasanov, A., & Tursunov, S. (2019). Researches of joint work of beams and soil bases. ISJ Theoretical & Applied Science, 11 (79), 401-406. Soi: http://s-o-i.org/1.1/TAS-11-79-82 Doi: https://dx.doi.org/10.15863/TAS.2019.11.79.82 |
Pages: 401-406
Published: 30.11.2019
Abstract: Basic principles for calculating contact tasks of a structure interacting with a soil base. The main objectives of the theory of contact interaction tasks (lying or embedded in an array of soil building structures loaded with external or gravitational loads) of structure and soil foundation: a) Structures interacting with the ground foundation perceive external ?? ?? and reactive stress Р(x) soil pressure, from the difference of which in the body structure bindings ?? ?? , bending moments M(x) and crossing stress Q(x). In this case, the calculation of the displacements and stress of the beam must satisfy two basic requirements: when calculating the deflection of a beam, the static requirements must be satisfied ?? ?? +Р(??)=??. b) The deflections of the beam must be calculated taking into account the elastic-plastic work of the soil foundation corresponding to the moment of stabilization of its sediment. Depending on the type of loading, at a certain distance l from the axis of loading will have restrictions on displacements ????? ?? ? ?? ?????? . The precipitation of the foundation system as a whole is carried out taking into account the basic laws of soil mechanics, in particular, according to elastic-plastic models. c) The deflection of building structures and (deformation) of the soil in the contact area meets the requirements of continuity, i.e. ???Р(??)???,????, where R-reactive stresses do not exceed the quasilinear region of soil deformation. The functional of the reactive pressure P (x) depends on the type of loading and the type of soil located in the contact area of the beam thickness - ?? ?? . d). The total or total stiffness of the structure (EI) lying in or embedded in the ground and the quasilinear deformable soil base t (bending stiffness of the soil) forms the deflection function of the structure ????? ?? ? ?? ?????? and the function of the radius of curvature ?? ?? = ?? ? (??). The function of the soil reactive pressure on the structure P (x), together with external forces q (x) while maintaining the equilibrium condition, forms the function of internal forces and affects the magnitude of the bending moments M (x) and cutting forces Q (x).
Key words: structures interacting; contact interaction; buckling; reactive pressure.
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