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RISFace Stability Analysis for a Shield-Driven Tunnel in Anisotropic and Nonhomogeneous Soils by the Kinematical Approach
Publisher: American Society of Civil Engineers
Abstract: The stability on a tunnel face is of great practical significance for safe construction in tunnel engineering. In this work, an advanced three-dimensional (3D) failure mechanism is extended to the face stability analysis ...
3D Numerical Analysis of a Single Footing on Soft Soil Reinforced by Rigid Inclusions
Publisher: ASCE
Abstract: In the absence of high-quality soils, the rigid inclusion reinforcement technique has been extensively used in geotechnical engineering practice to meet the serviceability requirements of construction projects. This article ...
3D Numerical Modeling of a Piled Embankment under Cyclic Loading
Publisher: American Society of Civil Engineers
Abstract: Embankments over pile-reinforced soft soil (called piled embankments) are known as one of the interesting techniques for soft soil improvement. They have been broadly applied in infrastructure projects thanks to their ...
Probabilistic Analysis of Pressurized Tunnels against Face Stability Using Collocation-Based Stochastic Response Surface Method
Publisher: American Society of Civil Engineers
Abstract: A probabilistic analysis of the face stability of a tunnel driven by a compressed-air pressurized shield is presented. The collocation-based stochastic response surface methodology (CSRSM) is used. The deterministic model ...
Face Stability Analysis of Circular Tunnels Driven by a Pressurized Shield
Publisher: American Society of Civil Engineers
Abstract: The aim of this paper is to determine the face collapse pressure of a circular tunnel driven by a pressurized shield. The analysis is performed in the framework of the kinematical approach of limit analysis theory. It is ...
Probabilistic Analysis of Circular Tunnels in Homogeneous Soil Using Response Surface Methodology
Publisher: American Society of Civil Engineers
Abstract: A probabilistic analysis of a shallow circular tunnel driven by a pressurized shield in a frictional and/or cohesive soil is presented. Both the ultimate limit state (ULS) and serviceability limit state (SLS) are considered ...
Two-Dimensional Physical and Numerical Modeling of a Pile-Supported Earth Platform over Soft Soil
Publisher: American Society of Civil Engineers
Abstract: This paper focuses on the mechanisms occurring in a granular earth platform over soft ground improved by rigid piles. Two-dimensional physical model experiments were performed using the Schneebeli’s analogical soil to ...
Three-Dimensional Numerical Modeling of a Piled Embankment
Publisher: American Society of Civil Engineers
Abstract: This paper proposes a three-dimensional numerical modeling of an embankment over a soft ground mass improved by vertical stiff piles, using a finite-difference continuum approach (FLAC3D). Arching occurs in the embankment ...
Multiphase Constitutive Model for the Design of Piled-Embankments: Comparison with Three-Dimensional Numerical Simulations
Publisher: American Society of Civil Engineers
Abstract: This contribution presents a so-called “multiphase” model for soft grounds improved by rigid vertical piles, aimed at capturing the global constitutive behavior of the reinforced ground. A special emphasis is put on the ...
Probabilistic Analysis and Design of Circular Tunnels against Face Stability
Publisher: American Society of Civil Engineers
Abstract: This paper presents a reliability-based approach for the three-dimensional analysis and design of the face stability of a shallow circular tunnel driven by a pressurized shield. Both the collapse and the blow-out failure ...