Uplift Behavior of Anchor Foundations in Soil PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Uplift Behavior of Anchor Foundations in Soil PDF full book. Access full book title Uplift Behavior of Anchor Foundations in Soil by Samuel P. Clemence. Download full books in PDF and EPUB format.
Author: Samuel P. Clemence
Publisher:
ISBN:
Category : Anchorage (Structural engineering)
Languages : en
Pages : 140
Get Book Here
Book Description
Author: Samuel P. Clemence
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 140
Get Book Here
Book Description
Author: Samuel P. Clemence
Publisher:
ISBN:
Category : Anchorage (Structural engineering)
Languages : en
Pages : 0
Get Book Here
Book Description
Author: Samuel P. CLEMENCE
Publisher:
ISBN:
Category :
Languages : it
Pages :
Get Book Here
Book Description
Author: Costakis N. Nicolaides
Publisher:
ISBN:
Category : Foundations
Languages : en
Pages : 788
Get Book Here
Book Description
Author: Jessica Marie Young
Publisher:
ISBN:
Category : Anchorage (Structural engineering)
Languages : en
Pages : 156
Get Book Here
Book Description
Helical anchors are a type of deep foundation element that can be installed quickly in almost any location and can accept the immediate application of operational loads. The use of helical anchors has expanded in recent decades from its established application in the power transmission industry to more traditional civil engineering applications such as residential construction, communication tower installations, and static and seismic structural retrofitting and reconstruction. Despite the wide range of helical anchor applications, few advances have been made in improving the understanding of their behavior. For example, existing helical anchor design methods, for cases where the anchors are loaded in uplift in cohesive soils, are based on the assumption that the soil above the helical plate is mobilized in a manner analogous to that beneath a deep foundation in bearing. An appropriate design method would acknowledge the effect of load directionality on the assumed failure mechanism. This thesis evaluates the existing cylindrical shear and individual plate bearing design methods for helical anchor capacity in uplift. Additionally, new capacity models are proposed to improve prediction accuracy and reduce prediction variability. A load test database of helical anchors loaded in tension is established from tests reported in the literature. The existing and proposed capacity models are compared to the capacities observed during loading tests using the statistical bias and its distribution. Load and Resistance Factor Design (LRFD) resistance factors are derived from closed-form solutions using First Order Second Moment (FOSM) reliability procedures. Finally, load-displacement models are developed through the evaluation of observed individual anchor plate breakout behavior and back-calculation of side shear capacity from load tests on multi-plate anchors. The new displacement models are compared to the load-displacement tests in the database. In general the comparisons indicate that the displacement-based models developed in this thesis provide a reasonable estimate of load-displacement behavior of helical anchors for service-level displacements. These findings provide engineers with new tools for design of helical anchor foundations.
Author: Hamed Niroumand
Publisher: Butterworth-Heinemann
ISBN: 0128095644
Category : Computers
Languages : en
Pages : 272
Get Book Here
Book Description
Soil Reinforcement for Anchor Plates and Uplift Response presents a comprehensive and rigorous review of the current knowledge in soil improvement for anchor plates, and is based on original research that includes experimental data on how to enhance uplift response of soil anchor plates by using several soil reinforcement methods. Divided into 6 chapters, the author makes an introduction to both Ancho Plates and Soil Reinforcement in chapter one, then providing a comprehensive literature review on the topic in chapter 2. Chapter 3 presents how the experiment was set up, the different types of geotextiles used, and the types of soil tested. Chapter 4 presents experimental data, along with data provided by simulation softwares, including Plaxis. Chapter 5 compares the experimental results to the numerical simulation data, providing researchers and geotechnical engineers with tools they can apply to their own projects. In chapter 6, the author presents his conclusions and recommendations on the usage of soil reinforcement to maximize uplift response to anchor plates. Researchers in geotechnical engineering can use the methods and experimental data presented in the book on their own projects, and practicing engineers will benefit from the comparisons between experimental and simulation data provided to make appropriate selection of soil reinforcement techniques that can be applied to their projects. Presents techniques for improving uplift response by 40% or more Discusses the uplift capacity of symmetrical anchor plates in several scenarios Provides a complete review of soil reinforcement for anchor plates Includes numerical analyses methods for validating experimental test results
Author:
Publisher: Cengage Learning
ISBN: 0357684834
Category :
Languages : en
Pages : 900
Get Book Here
Book Description
Author: James Pirtle Stewart
Publisher:
ISBN:
Category : Foundations
Languages : en
Pages : 538
Get Book Here
Book Description
Author: Chong Tang
Publisher: CRC Press
ISBN: 0429655959
Category : Technology & Engineering
Languages : en
Pages : 497
Get Book Here
Book Description
Model Uncertainties in Foundation Design is unique in the compilation of the largest and the most diverse load test databases to date, covering many foundation types (shallow foundations, spudcans, driven piles, drilled shafts, rock sockets and helical piles) and a wide range of ground conditions (soil to soft rock). All databases with names prefixed by NUS are available upon request. This book presents a comprehensive evaluation of the model factor mean (bias) and coefficient of variation (COV) for ultimate and serviceability limit state based on these databases. These statistics can be used directly for AASHTO LRFD calibration. Besides load test databases, performance databases for other geo-structures and their model factor statistics are provided. Based on this extensive literature survey, a practical three-tier scheme for classifying the model uncertainty of geo-structures according to the model factor mean and COV is proposed. This empirically grounded scheme can underpin the calibration of resistance factors as a function of the degree of understanding – a concept already adopted in the Canadian Highway Bridge Design Code and being considered for the new draft for Eurocode 7 Part 1 (EN 1997-1:202x). The helical pile research in Chapter 7 was recognised by the 2020 ASCE Norman Medal.
Author: B.M. Das
Publisher: Elsevier
ISBN: 0444596607
Category : Technology & Engineering
Languages : en
Pages : 254
Get Book Here
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.
