Abstract
Strip foundations on an elastic soil foundation and on a Winkler-type elastic foundation were used in the construction of buildings and structures from the most common types of shallow foundations. The article presents the results of studies related to the analysis of the features of the formation of structural solutions of strip foundations. It was found that various aspects associated with the development of multifactor mathematical models that determine the design parameters and modern regulatory requirements, provide conditions for not exceeding the limiting conditions of structures and soil base. It improves the functional quality indicators of strip foundations. Based on the results of the study, the need to study the possibilities of using strip foundations (beams on an elastic base) was identified, and the main provisions of the model of a Winkler-type soil base (with one, two and three bed coefficients) were considered. An algorithm is developed for determining the initial parameters and numerical solution of boundary value problems. The prospects of a shallow foundation model with a variable cross section or a beam of finite length with variable stiffness, which is accepted as one of the options for modifying a typical structural solution of a strip foundation, are shown.
Highlights
The Winkler type of the elastic base is the most simplified model that takes into account the joint work of the above-ground structure and the elastic base
It goes without saying that if you build the base of the house on unstable soil, as well as soil that rises unevenly in winter, the belt foundation will crack, which will lead to the destruction of the building, which is built on it
Structural solutions of belt foundations of monolithic reinforced concrete slabs and walls allow laying on the ground base exclusively continuous method
Summary
The Winkler type of the elastic base is the most simplified model that takes into account the joint work of the above-ground structure and the elastic base (figure 1). This is one of the important moments of the construction of a building or structure. All loads from the overlying structures it perceives and transmits it to the foundation base, except the transmitting loads must meet the requirements of durability reliability and be economically justified. Elastic base - the soil on which the foundation is located. The elastic base is replaced by a simplified calculation model. The most common model of all proposed is the proportionality between the load applied at a given point of the base surface and the sediment of the same point of the elastic base. The essential difference between the models, in each case, is the distribution of reactions occurring between the foundation and the base
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