Anchoring in Rock and Soil


Book Description

Anchoring in Rock and Soil




Pullout Resistance of Soil Anchors in Cohesionless Soil Under Varying Velocities by Experimental Methods


Book Description

An examination of the literature in respect to buried soil anchors shows an existing gap in parameters studied. An in depth study on soil anchors subjected to varying pullout velocities has yet to be studied in detail. This thesis outlines an experimental program to test anchors of two different diameters at various embedment depths and pullout velocities using symmetry. The analyzed data suggests the ultimate pullout resistance is rate dependent and is further influenced by diameter size and embedment depth. Anchors embedded at deeper depths with the larger diameter size showed to be more influenced by pullout velocities than those at shallower depths. Therefore, anchors pulled at high velocities should be considered during design process. Furthermore, results from this study can be used to update existing models to account for strain rate effects in addition to validate and calibrate new numerical models to include anchor foundations in potential applications that are subjected to dynamic loading.










Irregular Shape Anchor in Cohesionless Soils


Book Description

Irregular Shape Anchors in Cohesionless Soils presents a new type of soil anchor that can significantly lower cost and preparation time for application in low cohesion soils. The experimental data provided helps readers design and implement the new devices for their projects. The author introduces the specific problem of soil anchors in low cohesion soils in chapter one. In chapter two, a literature review is presented comparing findings of previous researchers and positioning irregular shape anchors (ISA) within the most traditional types of soil anchors. In chapter three, the methods used for testing ISA are presented together with the specific properties of sands, anchor materials, and the model of the fracture mechanism. The experimental results are covered in chapter four, including comparisons in embedment ration and sand density. The failure mechanism is discussed both for loose and dense sands. In chapter five, the author compares the experimental data with the theoretical and computational results. In chapter six, the author presents his conclusions and recommendations on the usage of ISA to projects. Researchers in geotechnical engineering can use the methods and models presented in the book for their own projects. Practicing engineers will benefit from the compiled experimental data and comparisons with most traditional types of soil anchors. Introduces a new type of soil anchor Offers a thorough literature review on soil anchor types Presents design specifications and practical data that can be used in new projects Provides engineers with a way to save implementation time and costs in geotechnical projects







Earth Anchors


Book Description

Anchors are primarily used in the construction of foundations of earth-supported and earth-retaining structures. The fundamental reason for using earth anchors in construction is to transmit the outwardly directed load to the soil at a greater depth and/or farther away from the structure. Although earth anchors have been used in practice for several hundred years, proper theoretical developments for purposes of modern engineering designs have taken place only during the past 40 to 45 years. This book summarizes most theoretical and experimental works directed toward the development of proper relationships for ultimate and allowable holding capacity of earth anchors. J. Ross Publishing offers a supplemental download — A customizable PowerPoint instructional slide presentation prepared by the authors that complements the material covered in the book, chapter-by-chapter.




Earth Anchors


Book Description

Anchors are primarily used in the construction of foundations of earth-supported and earth-retaining structures. The anchors are used in construction to transmit the outwardly-directed load to soil at a greater depth and/or farther from the structure. Although earth anchors have been used in practice for several hundred years, proper theoretical developments for purposes of modern engineering design have taken place only during the past twenty years or so. This book summarizes most of the theoretical and experimental works directed toward the ultimate and allowable holding capacity of earth anchors. The book contains six chapters with detailed discussions on horizontal, vertical and inclined anchor plates, helical anchors, and anchor piles. Discussions on the failure mechanism in soil located around the anchor, as well as various theories to calculate the ultimate and allowable loads, are presented. Laboratory and field test results which are required to supplement and verify the theories have also been included. This book is of interest to consulting engineers in geotechnical engineering, as well as geotechnical engineering researchers and engineering libraries.