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Embedment

About: Embedment is a research topic. Over the lifetime, 2441 publications have been published within this topic receiving 31444 citations.


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Journal ArticleDOI
TL;DR: In this article, a new method of analysis is described for estimating the deformations and strains caused by shallow undrained penetration of piles and caissons in clay, which combines previous analyses for steady, deep penetration, with methods used to compute soil deformations due to near-surface ground loss.
Abstract: A new method of analysis is described for estimating the deformations and strains caused by shallow undrained penetration of piles and caissons in clay. The formulation combines previous analyses for steady, deep penetration, with methods used to compute soil deformations due to near-surface ground loss, and is referred to as the Shallow Strain Path Method (SSPM). Complete analytical solutions for the velocity and strain rates are given for a planar wall, an axisymmetric, closed-ended pile and unplugged, open-ended pile geometries. In these examples, the analyses consider a single source penetrating through the soil at a constant rate, generating a family of penetrometers with rounded tips, referred to as simple wall, pile and tube geometries. Soil deformations and strains are obtained by integrating the velocity and strain rates along the particle paths. The transition from shallow to deep penetration is analysed in detail. Shallow penetration causes heave at the ground surface, while settlements occur only in a thin veneer of material adjacent to the shaft and in a bulb-shaped region around the tip. The size of this region increases with the embedment depth. Deformations inside an open-ended pile/caisson are affected significantly by details of the simple tube wall geometry. © 1997 by John Wiley & Sons, Ltd.

51 citations

Journal ArticleDOI
TL;DR: In this paper, an array of equally spaced sensors was applied to the side of a single lap tapered joint, in order to simulate its embedment into the composite laminate, and the position of the crack tip was monitored using both an optical microscope and an ultrasonic phased array sensor.

51 citations

Journal ArticleDOI
TL;DR: In this paper, a series of model tests were conducted to provide insight into the behavior of a torpedo anchor during dynamic installation and monotonic pullout in lightly overconsolidated calcareous silt.
Abstract: Challenges associated with dynamically installed anchors include prediction of the anchor embedment depth, which dictates the anchor's holding capacity. This is particularly true for calcareous sediments, as very little performance data exist for this anchor type in these soils. This paper reports results from a series of model tests undertaken to provide insight into the behaviour of a torpedo anchor during dynamic installation and monotonic pullout in lightly overconsolidated calcareous silt. The tests were carried out in a beam centrifuge, varying the drop height and consequently the impact velocity, and the consolidation period prior to anchor pullout. The mudline load inclination was also varied to encompass various mooring configurations. The centrifuge model test data were used to calibrate: (a) an analytical dynamic embedment model, based on conventional bearing and frictional resistance factors but with strain-rate-dependent undrained shear strength for the soil; and (b) an analytical quasi-stati...

51 citations

Journal ArticleDOI
TL;DR: In this paper, the critical internal skirt spacing for the undrained failure of shallow skirted foundations under conditions of plane strain based on the criterion that the confined soil plug should ideally displace as a rigid block, such that optimal bearing capacity is realized.
Abstract: Finite-element limit analysis is used to identify the critical internal skirt spacing for the undrained failure of shallow skirted foundations under conditions of plane strain based on the criterion that the confined soil plug should ideally displace as a rigid block, such that optimal bearing capacity is realized. General loading (vertical, horizontal, and moment) is considered for foundations with skirt embedments ranging from 5 to 50% of the foundation breadth in soil having either uniform strength or strength proportional to depth. The results explicitly identify the number of internal skirts required to ensure soil plug rigidity under arbitrary combinations of horizontal and moment loading expressed as a function of the normalized skirt embedment and the maximum expected level of vertical loading as a fraction of the ultimate vertical bearing capacity. It is shown that fewer internal skirts are required with increasing normalized foundation embedment, but more internal skirts are required wit...

51 citations

Journal ArticleDOI
TL;DR: In this paper, the results of an experimental research related to chemical anchors in natural stone are presented. And the applicability of some numerical models for the prediction of the bearing capacity of the anchor is investigated, whereas the theoretical formulations are not feasible.

50 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023202
2022355
2021160
2020120
2019125
2018139