Behavior of Laterally Loaded Piles in Cohesionless Soils PDF Download

Author: Arthur Fang Sheen
Publisher:
ISBN:
Category : Soil mechanics
Languages : en
Pages : 256

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Author: Dipanjan Basu
Publisher: Purdue University Press
ISBN: 9781622601264
Category : Transportation
Languages : en
Pages : 152

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This report focuses on the development of a new method of analysis of laterally loaded piles embedded in a multi-layered soil deposit treated as a three-dimensional continuum. Assuming that soil behaves as a linear elastic material, the governing differential equations for the deflection of laterally loaded piles were obtained using energy principles and calculus of variations. The differential equations were solved using both the method of initial parameters and numerical techniques. Soil resistance, pile deflection, slope of the deflected pile, bending moment and shear force can be easily obtained at any depth along the entire pile length. The results of the analysis were in very good agreement with three-dimensional finite element analysis results. The analysis was further extended to account for soil nonlinearity. A few simple constitutive relationships that allow for modulus degradation with increasing strain were incorporated into the analysis. The interaction of piles in groups was also studied.

Author: H. L. Gill
Publisher:
ISBN:
Category :
Languages : en
Pages : 66

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Field tests were performed to study the horizontal load-displacement characteristics of natural soil deposits and to associate these characteristics with the behavior of laterally loaded piles. The ultimate objective of the tests was to acquire information essential for the design of laterally loaded soil-supported structures. Three soil conditions were considered: (1) bay mud with a desiccated crust in its natural dry state, (2) bay mud submerged within the area of testing, and (3) a hydraulic fill of granular material classified as SP by the unified soil classification system. Segmental pile tests were performed with three sizes of laterally loaded segments and at various depths below ground surface in the bay mud. (Similar tests in the hydraulic fill were covered in a previous NCEL report.) Lateral load tests on full-scale piles from 4 to 16 inches in diameter were performed at each test site. Theoretical information, available soil data, and results of the segmental pile tests were compared and combined to establish representative lateral load-displacement relationships for the soil at any depth at the three sites by using rectangular hyperbolas. Theoretical predictions of the response of laterally loaded piles were made using these relationships, and the results were compared with data obtained during the lateral load tests on piles. Experimental data and theoretical predictions compared favorably. (Author).

Author: H. G. Poulos
Publisher: Krieger Publishing Company
ISBN: 9780894644498
Category : Technology & Engineering
Languages : en
Pages : 397

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Author: Jeffrey A. Frantzen
Publisher:
ISBN:
Category :
Languages : en
Pages : 146

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Author: Teerawut Juirnarongrit
Publisher:
ISBN:
Category :
Languages : en
Pages : 818

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Author: Mohamed Nabeel Abdel-Salam
Publisher:
ISBN:
Category : Marine geotechnics
Languages : en
Pages : 508

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Author: Lymon C. Reese
Publisher: CRC Press
ISBN: 1439894302
Category : Technology & Engineering
Languages : en
Pages : 529

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The complexities of designing piles for lateral loads are manifold as there are many forces that are critical to the design of big structures such as bridges, offshore and waterfront structures and retaining walls. The loads on structures should be supported either horizontally or laterally or in both directions and most structures have in common t

Author: Ken Fleming
Publisher: CRC Press
ISBN: 9780751401943
Category : Technology & Engineering
Languages : en
Pages : 400

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Book Description
Piling is a fast-moving field and in recent years there have been major advances in theory, methods, testing procedures and equipment. Some of these changes have been driven by the need for economies by improved efficiency, reduced spoil production and new methods of pile bore support. Advances in theoretical analyses allow pile design to be refined so that piles and pile groups perform to better advantage.

Author: SM. Gleser
Publisher:
ISBN:
Category : Deflection
Languages : en
Pages : 25

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A method previously presented by the author (in ASTM STP 154) is generalized to encompass soils having nonlinear p-y characteristics. This results in a method that can handle, but is not restricted to, pile-soil systems having (1) piles greater than 9 m (30 ft) in length having free, fixed, or partially fixed heads, and any cross-sectional shape and length relationship, for example, constant, tapered, or stepped, and of any materials or combination of materials; (2) soils of any variation with depth, whether homogeneous, stratified, or combinations thereof, and having p-y characteristics of any nature; (3) ability to qualitatively and quantitatively predict behavior and stresses under static, fluctuating, and repetitive lateral loadings, or where larger emergency loads can be interspersed between normal loads. Ways are suggested for dealing with each of these factors. In addition, a method is proposed for obtaining the effective soil constant at a given site for a range of lateral loads, using empirical test data from free-head piles of the same characteristics subjected to lateral loads. The method is validated by use on previously published data of a comprehensive series of tests on free-head piles by Assadeh and Davison (Journal of the Soil Mechanics and Foundation Division, Proceedings of the American Society of Civil Engineers, Volume 96, No. SM5, Sept. 1970, pp. 1583-1603). Using the soil constants resulted in computed load-deflection curves closely approximating actual data. These constants are used in turn to compute the expected deflections and pile stress of those same piles under fixed-head conditions.