Taking into account technological features of the diaphragm wall for deep pits

Abstract

This article analyzes the existing analytical and numerical methods for calculating the structures of the pit enclosure by the method of trench wall in the ground. The discrepancy of the results of various calculations among themselves is shown and the main disadvantages of each calculation scheme are revealed. None of the existing analytical methods allows taking into account technological and design features in a complex manner, which leads to a significant error in the results. The authors considered an approach to solving this problem in a spatial setting using various finite element complexes, taking into account the nonlinearity of concrete and soil. The results of numerical experiments demonstrate a significant reduction in forces in the enclosure, which can serve as a justification for the need for a new methodology that will optimize design solutions.

Modeling residual moisture content of leather

“…The effect of squeezing moisture out of wet materials is determined by the amount of fluid removed. Its quantity is determined by the flow rate through the roll contact curves and depends on the deformation of leather and the rate of fluid filtration [28].…”

“…During the process of leather squeezing, the filtration of fluid from leather into the cloth of the roll occurs along the polar radius r [28].…”

“…As is known [28], the amount of removed fluid flowing along the roll contact curve (polar radius) can be determined by the following expression:…”

“…amount of fluid removed, the fluid extracted from the wet material under squeezing is determined by the following expression[28]:…”