Seismic soil pressure for building walls: An updated approach

Ostadan, Farhang

doi:10.1016/j.soildyn.2004.11.035

Cited by 56 publications

(43 citation statements)

References 4 publications

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“…This approach has been adopted by other researchers and similarly high seismically induced earth pressures were computed, e.g. Matsuo and Ohara [19], Prakash [20], Sherif et al [15], Ostadan and White [21] and Ostadan [22]. However, very few structures are perfectly rigid and FEMA 750 [2] explicitly points out that this solution applies to non-yielding walls "founded on rock or very stiff soil".…”

Section: "Non-yielding" Stiff Retaining Structuresmentioning

confidence: 99%

On seismic response of stiff and flexible retaining structures

Wagner¹,

Sitar

2016

Soil Dynamics and Earthquake Engineering

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A B S T R A C TThis paper presents an overview of the results of experimental and analytical studies of the seismic response of stiff and flexible retaining structures. These studies were motivated by very large dynamic forces in areas of high seismicity predicted by current seismic design methodologies based on the work of Okabe [3] and Mononobe and Matsuo [4]. However, there is no evidence of systematic failures of retaining structures in major earthquakes even when the ground accelerations clearly exceeded the design assumptions. The experimental program consisted of a series of geotechnical centrifuge model studies with different types of structures with cohesionless and cohesive backfill. Overall, the results of these studies show that the Mononobe-Okabe (M-O) method of analysis provides a reasonable upper bound for the response of stiff retaining structures and that flexible retaining structures experience loads significantly smaller than those predicted by this method. Moreover, for deep embedded structures the dynamic forces do not continue to increase with depth and gradually become a small fraction of the overall load on the walls.

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Section: "Non-yielding" Stiff Retaining Structuresmentioning

confidence: 99%

On seismic response of stiff and flexible retaining structures

Wagner¹,

Sitar

2016

Soil Dynamics and Earthquake Engineering

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“…In order to validate the present model, pressure distribution values on the soil standing behind the quay wall are compared against the theoretical formulas of Ostadan [16]. The results of this comparison are shown on Figure 4 which show favorable agreement between the obtained results and that of [16]. …”

Section: Analysis Assumptionsmentioning

confidence: 77%

Investigation of Soil and Quay Wall Interaction Under Seismic Loading

Abtahi¹,

Ghadimi

Zamanian³

et al. 2013

AJCEA

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Optimal design of Quay Walls against seismic forces has become a challenge for engineers. For countries that are placed on the earthquake belt, it is very important to investigate the strength and behavior of quay walls against earthquakes. In this study, the behavior of cantilever concrete quay walls placed on the saturated cohesive soil is studied using finite element method in ANSYS Software. Patterns of the interaction between soil and structure prove to be very complicated. On the other hand, with the consideration of the interactions between soil and structure under the seismic forces, the problem will be made much more complicated. In the present study, height of the quay walls, soil type, strength and duration of the earthquake on the Bending moment against the wall are considered and pressure distributions behind the wall have been investigated.

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“…Recent experimental studies have challenged the M-O method as being overly conservative for cantilever U-shaped walls [10] and free-standing retaining walls [11], and as providing a reasonable upper-bound for braced walls [12]. By contrast, analytical elasto-dynamic solutions [13], [14] and numerical modeling studies [15] have challenged M-O as being unconservative. This has led to confusion among practicing engineers and researchers regarding appropriate methods of analysis.…”

Section: Introductionmentioning

confidence: 99%

Approximate solution for seismic earth pressures on rigid walls retaining inhomogeneous elastic soil

Brandenberg

Mylonakis

Stewart

2017

Soil Dynamics and Earthquake Engineering

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An approximate elasto-dynamic solution is developed for computing seismic earth pressures acting on rigid walls retaining continuously inhomogeneous elastic material and excited by vertically propagating shear waves. The shear modulus of the soil is represented as a nonlinear function of depth, in a manner that is consistent with established analytical and empirical relationships, while mass density and Poisson's ratio are assumed constant. Solutions are presented for a single wall and for a pair of walls spaced at a finite distance. A shape function characterizing the vertical variation of horizontal displacement of the soil column in the free-field is assigned, and simplifying assumptions regarding the dynamic vertical stresses and the vertical-to-horizontal displacement gradient are made to facilitate closed-form expressions for horizontal displacement and stress fields. These solutions are used to compute the distribution of dynamic horizontal earth pressure acting on the wall. A Winkler stiffness intensity relationship is then derived such that the proposed method can be extended beyond the boundary conditions considered herein. These solutions agree well with exact analytical elasto-dynamic solutions for inhomogeneous soil that are considerably more complicated to implement. Causes of differences between the solutions are discussed.

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Seismic soil pressure for building walls: An updated approach

Cited by 56 publications

References 4 publications

On seismic response of stiff and flexible retaining structures

On seismic response of stiff and flexible retaining structures

Investigation of Soil and Quay Wall Interaction Under Seismic Loading

Approximate solution for seismic earth pressures on rigid walls retaining inhomogeneous elastic soil

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