МЕТОД ДЕФОРМАЦІЙ ПРИ РОЗРАХУНКУ ФУНДАМЕНТНИХ КОНСТРУКЦІЙ

Abstract

Метод деформації дозволяє описати напружено-деформований стан конструкції фундаменту через залежність, що пов'язує осідання фундаменту з параметрами жорсткості системи «фундамент-грунт» за різних коефіцієнтів жорсткості по довжини конструкції або глибини фундамент. Запропонований спосіб може покращити розрахунок напружено-деформованого стану симетрично та асиметрично завантажених фундаментів, що може значно покращити експлуатаційні характеристики будівель і споруд. Деформація фундаментної конструкції описується наближеною кореляцією, включаючи осадку фундаменту та параметр жорсткості системи «фундамент-основа». Розрахунок охоплює різні (лінійні та нелінійні) режими розподілу жорсткості конструкції по довжині конструкції та характеристики розподілу ґрунтової основи.

The unceasing process of urbanization all over the world and the constantly growing cost of land plots allotted for development makes investors, scientists and engineers look for and find ways to reduce the unit cost of construction of useful areas of buildings and structures for various purposes. The most effective way to reduce the unit cost of construction of useful areas of buildings and structures is to increase their number of storeys and depths of underground parts. But with an increase in the height of buildings, the loads on their foundations also increase, stimulating scientists and engineers to search for more advanced methods and methods for solving problems related to determining the rational parameters of the foundations of buildings and structures, improving the quality and reliability of the calculation methods used. The results obtained using modern methods of calculating foundations in some cases lead to an overestimation of the costs of building materials, in some - to a decrease in comparison with the real strength and deformation indicators of the foundations of construction objects. This book describes a deformation method that allows you to improve the calculations of the stress-strain state of pile and some other types of foundations by expressing the deformations of foundation structures by the dependence of the foundation settlement on the rigidity of the “foundation-foundation” system and the coefficient of foundation rigidity, which varies along the length or depth of the foundations, which will significantly improve the performance of buildings and structures. Based on the hypothesis of direct proportionality (Winkler), we use the ability of such a model of the basis to take any variable stiffness along the length of the structure that transmits the load to the ground. Representing a system of unconnected springs of different stiffness, such a base is able to mimic the resolution of the currently used different models within the base of the foundations. However, outside the sole, Winkler cannot consider the resolution of the real soil in terms of interaction with adjacent foundations. Thus, we are going to take into account only the "internal" resolution of different models of the basis. It is not difficult to obtain this information using analytical and numerical methods for determining the stress-strain state of the soil base.