Results 21 to 30 of about 6,760,865 (281)

Orbital dynamics of earth-orbiting 'smart dust' spacecraft under the effects of solar radiation pressure and aerodynamic drag [PDF]

open access: yes, 2010
This paper investigates how the perturbations due to asymmetric solar radiation pressure, in presence of Earth's shadow, and atmospheric drag can be balanced to obtain long-lived Earth centered orbits for swarms of SpaceChips, without the use of active ...
Colombo, C., McInnes, C.R.
core   +4 more sources

Revisiting Active and Passive Earth Pressure Problems using Three Stability Factors

open access: yes, 2023
This paper presents rigorous plasticity solutions to the classical active and passive earth pressure problems. The primary method adopted is a conventional equation based on the soil property and three stability factors (Fc, Fs, and Fγ), that are ...
Nguyen, Tan   +3 more
core   +1 more source

Active Soil Pressure of Unsaturated Soil under Rainfall Conditions

open access: yesAdvances in Civil Engineering, 2022
To study the change in unsaturated active earth pressure under rainfall conditions, based on the thin layer element method and shear strength formula of unsaturated soil, Iverson analysis was used to improve the traditional Coulomb earth pressure theory,
Qizhi Hu, Yugang Li
doaj   +1 more source

Numerical analysis of soil pressure on single bucket wall of new bucket foundation breakwater

open access: yesShuili Shuiyun Gongcheng Xuebao, 2016
The key analysis of the stability of the new bucket foundation breakwater on soft foundation is the analysis of the soil pressure on the bucket wall. According to the practical works and by means of numerical analysis,the soil pressure distribution on ...
CAI Zheng-yin   +3 more
doaj   +1 more source

DEM Analysis of Backfilled Walls Subjected to Active Translation Mode [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2017
In this paper, the problem of a retaining wall under active translation mode is investigated numerically. To this end, a series of numerical models is conducted using the discrete element code, PFC2D.
Mohammad Hossein Khosravi   +3 more
doaj   +1 more source

Active Earth Pressure against Rigid Retaining Walls for Finite Soils in Sloping Condition considering Shear Stress and Soil Arching Effect

open access: yesAdvances in Civil Engineering, 2020
The horizontal differential layer element method was used to study the active earth pressure of the finite-width soil formed by the rigid retaining wall for the embankment or adjacent foundation pits.
Weidong Hu   +4 more
doaj   +1 more source

Earth Pressure of Three-Dimensional Stress States under Different Strength Criteria and Its Application

open access: yesAdvances in Materials Science and Engineering, 2021
To solve the Earth pressure problems in practical engineering, such as retaining walls and foundation pits, we derive active and passive Earth pressure formulas in accordance with the relationship between intermediate principal stress and excavation ...
Yu Zhang   +6 more
doaj   +1 more source

Discussion on Nonlinear Distribution of Active Earth Pressure

open access: yesProceedings of the International Workshop on Environment and Geoscience, 2018
In the theory of Coulomb, Rankine and Mononobe, the unit earth pressure is distributed in a triangle along the height of the wall and the point of resultant earth pressure is at 1/3 height from the bottom of the wall, which are different from a mass of theoretical analysis and experiments.
Ningxin Zhang   +5 more
openaire   +3 more sources

Quantification of the Active Lateral Earth Pressure Changes on Retaining Walls at the Leading Edge of Steep Slopes

open access: yesFrontiers in Earth Science, 2022
Retaining walls may become unstable when the steep slope angle of the top of the wall (β) is greater than the internal friction angle of the earth behind the wall (φ). To examine this behaviour, an active earth pressure model test setup was designed with
Kui Wang   +5 more
doaj   +1 more source

Palaeoenvironmental signatures revealed from rare earth element (REE) compositions of vertebrate microremains of the Vesiku Bone Bed (Homerian, Wenlock), Saaremaa Island, Estonia [PDF]

open access: yes, 2015
The Estonian Journal of Earth Sciences is an open access journal and applies the Creative Commons Attribution 4.0 International License CC BY to all its papers (http://creativecommons.org/licenses/by/4.0/).
Alberto Pérez-Huerta   +20 more
core   +2 more sources

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