Topic
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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TL;DR: In this article, a pseudo-dynamic approach is adopted to calculate the seismic active force supporting c-Φ backfill, considering a planar rupture surface, the effect of wide range of parameters like inclination of retaining wall, wall friction and soil friction angle, shear wave and compression wave velocity, horizontal and vertical seismic coefficients are taken into account.
Abstract: Knowledge of seismic active earth pressure behind rigid retaining wall is very important. In this paper, the pseudo-dynamic approach, which considers the effect of both compression and shear wave propagation, is adopted to calculate the seismic active force supporting c-Φ backfill. Considering a planar rupture surface, the effect of wide range of parameters like inclination of retaining wall, wall friction and soil friction angle, shear wave and compression wave velocity, horizontal and vertical seismic coefficients are taken into account to evaluate the seismic active force. Results are presented in terms of seismic coefficients in tabular form and variation of pressure with depth.
31 citations
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TL;DR: In this paper, a contact model considering rolling resistance in particles was explained and imple- mented into the distinct element method (DEM) and the parameters of the contact model were determined from DEM simulation of biaxial tests on a sandy specimen.
Abstract: The focus of this paper is to analyze earth pres- sure against a rigid retaining wall under various wall move- ment modes with a contact model considering inter-particle rolling resistance implemented into the distinct element method (DEM). Firstly, a contact model considering rolling resistance in particles was generally explained and imple- mented into the DEM. The parameters of the contact model are determined from DEM simulation of biaxial tests on a sandy specimen. Then, the influence of inter-particle rolling resistance in the backfill is discussed by comparing the active and passive earth pressure against a rigid wall subjected to a translational displacement with and without inter-particle rolling resistance in the material. Third, the DEM model con- sidering the rolling resistance is used to investigate active and passive earth pressures while the rigid wall moves in a more general manner such as rotation or translation. The influence of rolling resistance on the earth pressures is examined from the microscopic particle scale (e.g., shear strain field) as well as the macroscopic scale (e.g., the magnitude and action point of resultant earth pressures). Finally, the effect of the initial density and the particle size of the backfill are discussed. The results show that when rolling resistance in the particles is taken into account in the DEM simulation, the simulation results are more appropriate and are in line with practical
31 citations
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TL;DR: In this paper, an axisymmetric physical model test with full instrumentation was carried out to understand the consolidation process of the treated ground treated by deep cement mixing (DCM) treated ground.
Abstract: The soil ground treated by deep cement mixing (DCM) in the field normally consists of cement–soil mixed columns and untreated soils Although many attempts have been made, research on the consolidation behavior of the treated soil ground has been limited To better understand the consolidation process of the DCM treated ground, in this study, an axisymmetric physical model test with full instrumentation was carried out The physical model ground consisted of a central cement–soil column and surrounding soft soil Excess pore water pressures in the soil and vertical pressures carried by the DCM column and the untreated soil were recorded throughout the test Responses of excess pore pressure under loading and unloading stages are highlighted Based on the data analysis, it is revealed that the improved ground consolidates faster than the pure soil ground The major reason is considered to be that the DCM column reduces the vertical stress increment in the soil and results in a lower value of excess pore pr
31 citations
15 Mar 1981
31 citations
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TL;DR: In this paper, shaking table tests were carried out in model-scale to investigate seismic performance of reinforced soil retaining walls (RSRW) subjected to the combined forces of rainfall and earthquakes.
31 citations