Performance of Diaphragm Wall Constructed Using Top-Down Method

Ou, Chang‐Yu; Liao, Jui-Tang; Lin, Huapeng

doi:10.1061/(asce)1090-0241(1998)124:9(798)

Cited by 246 publications

(69 citation statements)

References 6 publications

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“…Since the publication of Peck [7], lots of researchers have devoted themselves to the analysis of field measurements 2 Mathematical Problems in Engineering to reveal the performances of excavations and retaining structures (e.g., O'Rourke, 1981 [8]; Finno et al, 1989 [9]; Ou et al, 1998 [10]; Finno et al, 2007 [11]; and Tan and Wei, 2011 [12]). With the increasing employment of tieback anchored retaining walls, the analysis of the mechanical behavior for an excavation supported by tieback walls is also prevalent in the available literature.…”

Section: Introductionmentioning

confidence: 99%

Design Analysis and Observed Performance of a Tieback Anchored Pile Wall in Sand

Han

Zhao

Chen

et al. 2017

Mathematical Problems in Engineering

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This paper aims to study the design process and service performance of a deep excavation supported by tieback anchored pile walls. The design procedure and design approaches for deep excavation in China are described. Based on the excavation case history for Shenyang, China, design results obtained using the elastic method and the finite element method (FEM) are compared and analyzed. Special emphasis is given to the analysis of horizontal wall deformations, internal forces in the wall, earth pressures on the wall, ground surface settlements, and stabilities of the excavation. The similarities and differences between the Chinese code (JGJ 120-2012) and the European code (EN 1997-1) for the design of geotechnical structures are presented based on a design example. Through the comparison, it is indicated that the Chinese code focuses on the design result, while the European code focuses on the design process. The crucial construction methods for reducing construction risk based on the excavation case history are described. The mechanical behaviors of the excavation retained by an anchored pile wall were investigated by analyzing observed field cases. The results provide good, practical guidelines for the design and construction of a tieback anchored pile wall retained excavation in sandy soil.

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Section: Introductionmentioning

confidence: 99%

Design Analysis and Observed Performance of a Tieback Anchored Pile Wall in Sand

Han

Zhao

Chen

et al. 2017

Mathematical Problems in Engineering

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“…This paper adopts a well-documented excavation case history, namely Taipei National Enterprise Center (TNEC), presented by Ou et al (1998). TNEC constructed by top-down construction method had the diaphragm wall with thickness of 0.9 m and depth of 35 m. There were totally 7 excavation stages.…”

Section: Analytical Modelsmentioning

confidence: 99%

Responses of adjacent ground and building induced by excavation using 3D decoupled simulation

Lin

Mendy

Dang

et al. 2016

JGS Special Publication

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This paper presents a study on excavation-induced deformation characteristics of ground and adjacent building using three-dimensional (3D) decoupled simulations. A decoupled analytical technique is proposed to enhance the consideration of both the 3D nonlinear soil behavior and the inelastic structure responses. The excavation effects and the adjacent structure's responses are decoupled and simulated by two separate programs: PLAXIS 3D for excavation and SAP 2000 for structure. Two models are bridged by a simple iteration scheme. A well-documented excavation case history and low-rise framed building are used for demonstration. The obtained results exhibit that the decoupled analytical method is feasible to incorporate properly the 3D nonlinear soil behavior and the inelastic structure responses. It also seems practical to use since the numerical outcomes often converge within several iterations. The analytical results show that the lateral and vertical movements of the structure are significantly different from those of the greenfield ground. In addition, more in-depth inelastic structure responses can be investigated such as where the plastic hinge may occur in the structure. This is a significant advancement as it provides additional insights on assessing the building's potential damage and serviceability.

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“…The natural bedrock stratum is located at a depth of 46 m. All the soil parameters have been measured by triaxial compression and extension, field vane shear and cone penetration tests with pore-water pressure measurement. In the following numerical calculations, the required soil parameters and state variables are directly taken from the literature [9], [10], [11], correlated with given quantities or estimated.…”

Section: Numerical Simulation 21 Finite-element-modelmentioning

confidence: 99%

On the deformation behaviour of strip footings during the construction process of an adjacent diaphragm wall in soft clayey ground

Schäfer¹,

Triantafyllidis²

2009

Bautechnik

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The installation process of diaphragm walls in soft clayey soil deposits can produce considerable deformations on the adjacent ground, affecting the serviceability of nearby structures. This article highlights the influence of the stepwise D-wall construction process on the development of settlements of neighbouring strip footings. For the simulation of the construction process, a threedimensional finite element model of a plain diaphragm wall section and an adjacent footing is assumed. The stress-strain behaviour of the ground is described by an advanced constitutive model, which especially takes into account the rheological properties of the soft clay, like creep, relaxation and a rate-dependent stiffness. Numerous calculations are performed, considering the impact of the panel geometry and the installation sequence of the diaphragm wall. Furthermore, the loading as well as the bending stiffness of the strip footing is varied. With respect to the serviceability of the footing, recommendations for the D-wall construction are finally given, aiming at a prevention oriented construction technique.

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Performance of Diaphragm Wall Constructed Using Top-Down Method

Cited by 246 publications

References 6 publications

Design Analysis and Observed Performance of a Tieback Anchored Pile Wall in Sand

Design Analysis and Observed Performance of a Tieback Anchored Pile Wall in Sand

Responses of adjacent ground and building induced by excavation using 3D decoupled simulation

On the deformation behaviour of strip footings during the construction process of an adjacent diaphragm wall in soft clayey ground

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