Determination of Homogeneous Foundation’s Settlement Based on the Integral Estimation Method

Abstract

To meet the requirements of Federal Law No. 384 “Technical regulations on the safety of buildings and facilities”, it is necessary to prevent the unacceptable strain level of the building base. Consequently, the design of foundations should be carried out taking into account the limiting base settlement. In this regard, pride of place goes to the issue of projecting the settlement of foundations on compressible bases, the determination of their unevenness and settlement progress. This article proposes the development of a new determining method for homogeneous foundation’s settlement based on the integral estimation method, that can help reduce the number of performed calculations. Assuming that the ground deformations occur mainly in a zone of some thickness directly under the foundation base, and the ground distortion decreases with depth, it may be concluded that it is possible to predict the ultimate settlement of a homogeneous foundation tell by the settlement of one layer of some finite thickness. Assume that the total foundation base settlement is proportional to the ratio of the total stress in a layer of some finite thickness tending to 0, to the total additional stress in a layer with a thickness tending to infinity. Using developed coefficient Kα makes it possible to determine foundation settlement by calculating the deformations of one ground layer located directly under the foundation base, which greatly simplifies the underground structure design. The value of the coefficients α Kα is calculated under various parameters η; with ξ integration by parts and is presented in the article as a table. The settlement values determined by the current regulatory documents and by the developed methodology coincide, which allows us to conclude that the proposed method has a sufficient degree of reliability and can significantly facilitate the process of determining base deformations of buildings and structures.