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Lateral earth pressure

About: Lateral earth pressure is a research topic. Over the lifetime, 5334 publications have been published within this topic receiving 62552 citations.


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Journal ArticleDOI
TL;DR: In this paper, an apparatus has been developed to model the excavation of a tunnel in the laboratory and 2D model tests are carried out to investigate the surface settlement and the earth pressure brought about by the tunneling.

32 citations

Journal Article
TL;DR: In this article, a geometry-based simple method is proposed to study the relationship between joint opening and tunnel squating based on the tunnel crown settlement, which provides a very convenient way to estimate the safety state of shield tunnels.
Abstract: The transverse deformation of shield tunnels may ultimately threaten the safety of tunnel structure.The surcharge above the tunnels is one of the leading factor to cause their transverse deformation.The evolution of transverse defromation of the tunnels under surchage is firstly studied using numerical simulation considering the effect of the elastic resistance of surrounding soil and lateral coefficient of earth pressure at rest.It is found that the development of joint opening and the stress states of both tunnel concrete and bolts are dependent on the variation of tunnel diameter.Thus,the variation of tunnel diameter can be taken as the assessment index to predict the performance of shield tunnels in soft soils.The criteria for tunnel assessment are determined in terms of diameter change.Then,a geometry-based simple method is proposed to study the relationship between joint opening and tunnel squating based on the tunnel crown settlement.The method is verified by the abovementioned numerical simulation.This simple method provides a very convenient way to estimate the safety state of shield tunnels.

32 citations

Journal ArticleDOI
TL;DR: In this paper, the authors discuss the unit dissipated energy and the unit activation energy as possible energy criteria for evaluation of dynamic instability in soils, based on the influence of confining stress, coefficient of earth pressure at rest, dynamic stress amplitude and frequency of loading in the development of instability in the clays.

32 citations

Journal ArticleDOI
TL;DR: In this paper, a parametric study was carried out on a pair of embedded cantilevered walls in dry sand, subjected to real earthquakes scaled at different values of the maximum acceleration.
Abstract: This paper is a numerical investigation of the physical phenomena that control the dynamic behaviour of embedded cantilevered retaining walls. Recent experimental observations obtained from centrifuge tests have shown that embedded cantilevered retaining walls experience permanent displacements even before the acceleration reaches its critical value, corresponding to full mobilisation of the soil strength. The motivation for this work stems from the need to incorporate these observations in simplified design procedures. A parametric study was carried out on a pair of embedded cantilevered walls in dry sand, subjected to real earthquakes scaled at different values of the maximum acceleration. The results of these analyses indicate that, for the geotechnical design of the wall, the equivalent acceleration to be used in pseudo-static calculations can be related to the maximum displacement that the structure can sustain, and can be larger than the maximum acceleration expected at the site. For the structural ...

32 citations

Journal ArticleDOI
TL;DR: In this paper, a wave-propagation-based solution for the design of retaining walls for earthquake action is presented. But the use of these solutions in practice appears to be limited.
Abstract: Design of retaining walls for earthquake action is traditionally performed by limit analysis procedures—notably the classical solution of Mononobe-Okabe and its variants. Fundamental assumptions of these methods are (1) the static nature of seismic excitation, (2) the compliance in sliding and/or rocking of the base of the wall, (3) the shear failure of the backfill and the soil-wall interface, and (4) the prespecified point of application of soil thrust. Given the restrictive nature of these assumptions, alternative solutions based on wave-propagation theory have been developed that do not require failure of the backfill and thereby are applicable to nonyielding walls. Because of the complex mathematics involved, the use of these solutions in practice appears to be limited. A special integration technique inspired from the seminal work of Vlasov and Leontiev is presented, which simplifies the analysis by providing closed-form solutions suitable for practical use.

32 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023166
2022303
2021268
2020254
2019238
2018288