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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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TL;DR: In this paper, the maximum amplitude of the sliding and rocking oscillations and the frequencies at which these maximum amplitudes occur were derived for the system with and without radiation damping, and graphical relationships were presented to facilitate the determination of these coefficients.
Abstract: Wide ranges of soil properties, foundation dimensions, and depths of embedment are considered, and typical results are presented for the maximum amplitudes of the sliding and rocking oscillations and the frequencies at which these maximum amplitudes occur. The natural frequencies of the system with and without radiation damping are dependent on the shear wave velocity and Poisson's ratio of the half-space material, the geometric proportions of the foundation, and the depth of embedment, and they increase substantially as the depth of embedment increases. The total peak amplitude of vibration for the coupled motion is expressed in terms of a linear function whose coefficients are dependent on Poisson's ratio, the foundation dimensions, and the depth of embedment depth, and graphical relationships are presented to facilitate the determination of these coefficients. The results obtained clearly illustrate that embedment of the foundation significantly decreases its total peak amplitude for a given exciting force.
11 citations
01 Jan 1993
TL;DR: In this article, the authors describe new model wall experiments which were undertaken at the University of Surrey and provide further data on the performance of free embedded cantilever walls in granular soil.
Abstract: This paper describes new model wall experiments which were undertaken at the University of Surrey. Their aim was to provide further data on the performance of free embedded cantilever walls in granular soil. These experiments used a simplified technique which consisted of modelling only the segment of wall which was situated below the excavation level. These results fit well with a previously normalized data set. The trend of increasing bending moment with depth of embedment, for a constant plane strain angle of internal friction, which was postulated on the basis of the previously available experimental results, is confirmed. These data have been re- interpreted in the form of charts, which the authors suggest may be used for preliminary design purposes. For the covering abstract see IRRD 860485.
11 citations
TL;DR: In this paper, the authors analyzed the behavior of prestress strand anchorages by bonding with an epoxy adhesive for structural strengthening use and compared with theoretical results regarding maximum pullout and transmittable loads and also draw-in results.
Abstract: The objective of this study was to analyse the behaviour of prestress strand anchorages by bonding with an epoxy adhesive for structural strengthening use. Pull-out and push-in tests were carried out on 15·2 mm diameter prestress steel strands sealed in 18 mm diameter holes with several embedment lengths, complemented by long-term tests. Experimental results are presented and compared with theoretical results regarding maximum pull-out and transmittable loads and also draw-in results. Theoretical results are obtained by solving the governing equation of the bond phenomenon adopting a non-linear local bond/slip law derived from pull-out tests with short embedment length. The study shows that it is reasonable to assume an average constant bond stress for anchorage design with the studied epoxy adhesive in the range of the studied values of anchor embedment length and diameter. The average values for bond stress to be used for determining the maximum pull-out and transmittable loads were found to be 12·0 and...
11 citations
DOI•
01 Jan 1993
TL;DR: In this paper, the axisymmetric and three-dimensional analysis of the headed studs embedded in a plane concrete block is presented, and the influence of different geometrical and material parameters have been studied using finite element method and nonlocal microplane model.
Abstract: Anchoring elements such as headed and expansion studs and grouted or undercut anchors, are often used for local transfer of loads inlo concrete members. In order to better understand the failure mechanism, a large number of experiments have been carried out in the past. Ho,\·cver. due to the complicated three-dimensional load transfer a. very few or no numerical studies have been performed for a. number of different fastening situations i.c. influence of the embedment depth, crack-width in ftuence (fastening in cracked concrete), influence of the edge distance etc. Therefore, in the present study some results of the axisymmetric and three-dimensional nume rical analysis of the headed studs embedded in plane concrete block are presented. Influence of different geometrical and material parameters have been studied em ploying finite element method and nonlocal microplane model. Comparison between experimental and numerical results indicate reasonable good agreement. Generally it has been observed that the failure mechanism is governed by fr acture energy ral her than by tensile strength of concrete. As a consequence, the size effect is strong
11 citations