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 paper, a load transfer model for open-ended pipe piles was proposed, where a trilinear model for the external shaft friction was introduced, while a rigid plastic model was adopted to describe the load transfer at the pile-plug interface.
Abstract: Open-ended pipe piles have been increasingly used as the foundations for offshore structures. Considering the soil plugging effect, a novel analytical model is proposed in this paper to study the load transfer mechanism of open-ended pipe piles. A trilinear model for the external shaft friction was introduced, while a rigid plastic model was adopted to describe the load transfer at the pile-plug interface. Furthermore, an equilibrium equation of the soil plug was proposed, based on the hypothesis of a trilinear distribution of lateral earth pressure. The pile end resistance was analyzed by dividing it into two parts, i.e., the soil plug and pile annulus, the behaviors of which were described by the double broken line model. A calculation example was carried out to analyze the load transfer properties of the open-ended pipe piles. As a validation, similar load transfer processes of the open-ended pile were also captured in a newly built discrete element method model, mimicking the 100g centrifuge testing conditions.
17 citations
TL;DR: In this paper, a discrete-continuous model to analyze a buried structure response to static surface loading as well as the soil gravitational load at "service-state" conditions is presented, which can represent positive and negative arching and provides an understanding of the effects that various variables have on the arching type and on the structure response.
17 citations
TL;DR: In this paper, the relationship between undrained shear strength and consolidation pressure in compression and extension shear modes was studied in a Boston Blue clay sample and the in situ coefficient of earth pressure at rest was near to 0·9 as compared to K0p = 0·56 of the normally consolidated young clay in the compression range beyond the preconsolidation pressure.
Abstract: Block samples of a Boston Blue clay crust were used in a detailed study of the relationship between undrained shear strength and consolidation pressure in the compression and extension shear modes. The glacial silty clay sample that was mainly composed of quartz, feldspar, illite and chlorite has developed an overconsolidation ratio near to 3·0 by desiccation. The in situ coefficient of earth pressure at rest was near to 0·9 as compared to K0p = 0·56 of the normally consolidated young clay in the compression range beyond the preconsolidation pressure. In the compression range, for each consolidation-shear mode, undrained shear strength to vertical consolidation pressure ratio as well as shearing-induced pore water pressure to vertical consolidation pressure ratio, friction angle mobilized at yield, and the coefficient of earth pressure at rest, were constant and independent of consolidation pressure. The mobilized undrained shear strength of the normally consolidated young clay obtained by consolidating s...
17 citations
TL;DR: In this paper, the distribution of earth pressure on a cylindrical wall embedded in granular material and subjected to radial displacement has been investigated, and the results indicated a rapid decrease in lateral earth pressure when a small wall movement was introduced.
Abstract: This paper describes the results from an experimental program that has been conducted to investigate the distribution of earth pressure on a cylindrical wall embedded in granular material and subjected to radial displacement. The model shaft has been designed and built using mechanically adjustable segments to control the magnitude and uniformity of the wall movement during the tests. A series of experiments have been performed, and the progressive changes in earth pressure along the shaft have been continuously measured for different wall displacements. Results indicated a rapid decrease in lateral earth pressure when a small wall movement was introduced. When the wall movement reached about 2.5% of the shaft radius, the earth pressure distribution along the shaft became uniform and independent of any additional wall displacement. The experimental results are also compared with some of the available theoretical solutions, and the applicability of these solutions is then examined.
17 citations
TL;DR: In this paper, the authors investigated changes in vertical earth pressure (VEP) on high-filled cut-and-cover tunnels relative to the thickness and spread distance of the RLC soil layer, the ratio of the width of the valley to the diameter of the CCT (referred to as the B/D ratio), and the slope angle.
17 citations