Topic
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 use of steel link beams with their ends embedded in the reinforced concrete walls is proposed to achieve better ductility and energy absorption than previously possible, and preliminary experimental results are reported for two full-scale reversed cyclic loading tests of portions of ductile flexural walls coupled with steel link beam.
Abstract: Ductile coupled flexural walls are the primary seismic load resisting systems of many structures. The coupling beams of these structures must exhibit excellent ductility and energy‐absorption ability. To achieve better ductility and energy absorption than previously possible, the use of steel link beams with their ends embedded in the reinforced concrete walls is proposed. Preliminary experimental results are reported for two full‐scale reversed cyclic‐loading tests of portions of ductile flexural walls coupled with steel link beams. The excellent performance, together with the ease of construction, demonstrate the feasibility of this alternative form of construction. To ensure ductile response, design and detailing guidelines for both the clear span and embedded portions of the link beams and the reinforced concrete embedment region are presented. An assessment, based on comparisons with other structural systems, of this new type of construction is presented.
111 citations
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TL;DR: In this paper, two segregated vascule fabrication techniques are demonstrated, and their interactions with propagating Mode I and II cracks determined, and large resin pockets were found to redirect the crack around the vascules under Mode II conditions, therefore, it is recommended to avoid this configuration for self-healing applications.
110 citations
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01 Jan 1982
TL;DR: In this article, an analytical model for predicting the behavior of single deformed reinforcing bars embedded in confirmed concrete and subjected to generalized excitations in the range of low cycle fatigue is presented.
Abstract: This report presents an analytical model for predicting the behavior of single deformed reinforcing bars embedded in confirmed concrete and subjected to generalized excitations in the range of low cycle fatigue. The model is based on a general local bond stress-slip relationship, derived from the results of an extensive study performed at Berkeley, and on either a bilinear or a simple but sufficiently accurate nonlinear stress-strain relationship for the reinforcing steel bar. An efficient numerical scheme for the integration of the governing differential equation of bond along the embedment length of the bar is presented.
108 citations
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TL;DR: In this paper, results of small-scale laboratory model tests to determine the ultimate bearing capacity of a strip foundation supported by sand with multiple layers of geogrid reinforcement are presented.
Abstract: Results of small-scale laboratory model tests to determine the ultimate bearing capacity of a strip foundation supported by sand with multiple layers of geogrid reinforcement are presented. Tests were conducted with only one type of geogrid and a sand compacted to one relative density. The embedment ratio of the foundation was varied from zero to 0.6. It is found that, for the given reinforcement-depth ratio, the bearing capacity ratio with respect to ultimate load increases with embedment. The relationship between the bearing capacity ratio at ultimate load and at limited levels of settlement (less than or equal to 5% of foundation width) is also presented. The bearing capacity ratio at limited levels of settlement is smaller than the value at ultimate load.
108 citations
01 Dec 1985
TL;DR: In this paper, the uplift capacity of helix anchors in sand is investigated and the experimental results indicate that a cylindrical soil failure surface develops below the top helical shaped plate during pullout.
Abstract: Results of field and laboratory investigations of the uplift capacity of helix anchors in sand are presented. Equipment and instrumentation were used to measure uplift load, anchor deflection and sand surface deflections. Instrumentation was also used in the laboratory tests to monitor movements within the soil mass during uplift loading. The experimental results indicate that a cylindrical soil failure surface develops below the top helical shaped plate during pullout. Above the top plate the failure surface is dependent on depth of anchor embedment. Anchor installation and soil relative density also influence failure surface development. A method for estimating uplift capacity based on results of laboratory study and generally accepted soil mechanics principles is presented.
107 citations