Analysis of methods for calculating the stability of cellular structures

Author:

Terikhov Egor M.1,Anshakov Aleksandr S.1ORCID

Affiliation:

1. Moscow State University of Civil Engineering (National Research University) (MGSU)

Abstract

Introduction. Cellular structures are widely used in world practice to solve various problems. By means of such structures mooring and barrier constructions, and also the cofferdams are erected which allow to drain territory below a water level for the subsequent construction of the main structures on dry land. In domestic practice, these structures are often made of sheet piling profiles with high moment of inertia and moment of resistance as a part of anchored or interanchored thin walls. This design solution requires heavy-duty sheet piling sections and heavy anchoring devices at considerable water depths, which increases the steel intensity of the structure. For temporary structures the material and labor-intensive nature of the structure is undesirable. The honeycomb construction consists of flat sheet piles with cavities filled with soil. Materials and methods. Various stability tests of the cellular structure variant have been carried out in accordance with the current regulatory documents; recommendations for the design of these structures by the European company ArcelorMittal, which has extensive experience in designing realized projects of structures using this technical solution, have also been used. The stability indicator results are compared with the results of finite-element model calculations performed in the MIDAS FEA NX calculation complex. Results. Based on the calculation of a three-dimensional model of a cellular structure, a comparison was made with analytical methods for calculating stability. The analytical calculation of stability according to the deep shear scheme in accordance with current regulations has both a close convergence of the stability coefficient and a potential buckling surface in comparison with the FEM problem in a three-dimensional formulation. Conclusions. The main limiting factor in calculations of stability of cellular structures is the stability coefficient according to the scheme of deep shear.

Publisher

Moscow State University of Civil Engineering

Subject

General Medicine

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