Cylindrical excavations in clayey soils retained by jet grout walls: Numerical analysis and parametric study considering the influence of consolidation

• Type: Article in International Scientific Journal
• Date: 2014

Authors

José Leitão Borges (Author) FEUP; Gonçalo Torrão Guerra (Author) FEUP

Journal

Title: Computers and Geotechnics

Vol. 55

Pages: 42-56

ISSN: 0266-352X

Publisher: Elsevier

Indexing

ISI Web of Science

Scopus

INSPEC

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

DOI: 10.1016/j.compgeo.2013.07.008

Abstract (EN): Using a computer program based on the finite element method, a study is conducted to analyse the consolidation-dependent behaviour of a cylindrical excavation in a clayey soil, retained by a jet-grout wall. A parametric study is also performed in order to analyse the influence of three factors, namely the diameter of excavation, the embedded length of the wall and the elastic modulus of the wall material. The numerical model incorporates the Biot¿s consolidation theory (coupled formulation of the equilibrium and flow equations) with soil constitutive relations simulated by the p¿q¿h critical state model. Special emphasis is given to the analysis of excess pore pressures and displacements in the ground, as well as circumferential compression stresses, bending moments and horizontal displacements in the wall, and earth pressures on the wall faces.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15