Research Review on Bearing Capacity Behavior of Pile Foundation under Lateral Load

Based on review of current study on pile foundation under lateral load, an introduciton is given to some theoretical methods commonly used at home and aboard, with emphasis placed on the elastic subgrade reaction method and the p-y method as well as their characteristics and applicability, and some problems needed for further study are put forward. The present study provides a train of thought for further research on the behavior of large-diameter pile under lateral load.

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Research Review on Bearing Capacity of Pile Foundation under Complex Loads

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.256-259.125 ◽

2012 ◽

Vol 256-259 ◽

pp. 125-128

Author(s):

Jian Wei Zhang ◽

Qing Mei Kong ◽

Bo Wang

Keyword(s):

Mechanical Property ◽

Bearing Capacity ◽

Deformation Mechanism ◽

Pile Foundation ◽

Research Review ◽

Mountainous Areas ◽

Complex Load ◽

Urban Construction ◽

Train Of Thought

With the deepening of China's urbanization, the urban construction land in the mountainous areas is becoming increasingly tense, more and more bulidings pile had to be built on the hillsides. The pile is not only as foundation, but also have the role of reinforcement slope, its mechanical property is complex more than the anti-slide pile and ground piles under lateral load. Now the analysis against its bearing characteristics and deformation mechanism are not perfect, carrying out a thorough and meticulous research review is necessarily. Based on the review of current study on pile under icomplex loads, the present study provides a train of thought for further research on the behavior of pile under complex load.

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Bearing Characteristics of Composite Pile Group Foundations with Long and Short Piles under Lateral Loading in Loess Areas

Mathematical Problems in Engineering ◽

10.1155/2018/8145356 ◽

2018 ◽

Vol 2018 ◽

pp. 1-17 ◽

Cited By ~ 1

Author(s):

Tianzhong Ma ◽

Yanpeng Zhu ◽

Xiaohui Yang ◽

Yongqiang Ling

Keyword(s):

Bearing Capacity ◽

Pile Foundation ◽

Horizontal Displacement ◽

Pile Group ◽

Lateral Load ◽

Test Model ◽

Pile Head ◽

Load Bearing ◽

Composite Pile ◽

Pile Length

It is very necessary to research the bearing characteristics of composite pile group foundations with long and short piles under lateral load in loess areas, because these foundations are used widely. But few people researched this problem in loess areas up to now worldwide. In this paper, firstly, an indoor test model of a composite pile foundation with long and short piles is designed and then employed to explore the vertical load bearing characteristics and load transfer mechanisms of a single pile, a four-pile group, and a nine-pile group under different lateral loads. Secondly, ANSYS software is employed to analyze the load-bearing characteristics of the test model, and for comparison with the experimental results. The results demonstrate the following. (1) The lateral force versus pile head displacement curves of the pile foundation exhibit an obvious steep drop in section, which is a typical feature of piercing damage. A horizontal displacement limit of the pile foundation is 10 mm and 6mm for the ones sensitive to horizontal displacement. (2) The axial force along a pile and frictional resistance do not coincide, due to significant variations and discontinuities in the collapsibility of loess; a pile body exhibits multiple neutral points. Therefore, composite pile groups including both long and short piles could potentially maximize the bearing capacity and reduce pile settlement. (3) The distribution of stress and strain along the pile length is mainly concentrated from the pile head to a depth of about 1/3 of the pile length. If the lateral load is too large, short piles undergo rotation about their longitudinal axis and long piles undergo flexural deformation. Therefore, the lateral bearing capacity mainly relies on the strength of the soil at the interface with the pile or the horizontal displacement of the pile head.

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Experimental Study on Static Load of Large-Diameter Piles in Nonuniform Gravel Soil

Advances in Civil Engineering ◽

10.1155/2020/6291826 ◽

2020 ◽

Vol 2020 ◽

pp. 1-15

Author(s):

Baoyun Zhao ◽

Xiaoping Wang ◽

Mijia Yang ◽

Dongyan Liu ◽

DongSheng Liu ◽

...

Keyword(s):

Bearing Capacity ◽

Pile Foundation ◽

Static Load ◽

Large Diameter ◽

Skin Resistance ◽

Geological Structure ◽

Load Test ◽

Pile Foundations ◽

Gradual Change ◽

Test Pile

With the development of tourism, the number of multistorey buildings in mountain areas is increasing gradually, and the requirements of the form and bearing capacity of foundation in landslide areas are getting more demanding than ever. In-situ testing of rock and soil mass in slope area has important practical significance for improving the stability of building foundation. Taking a project in Baishi Mountain located in southwest of China as an example, firstly, the geological structure and mechanical properties of soil are analyzed. Then, two types of pile foundations, i.e., empty-bottom pile foundations and solid-bottom pile foundations, are designed based on the characteristics of the geological structure for carrying out the static load test on pile foundation. The test results are as follows: (a) the load settlement curve (Q-S) of the empty-bottom test pile shows a steep drop, while the Q-S curve of the solid-bottom test pile shows a gradual change, showing that the end-bearing friction pile’s property and the ultimate bearing capacity of the solid-bottom pile are higher than those of the empty-bottom pile. (b) The maximum lateral friction of the four test piles is 139.158 kPa, 148.015 kPa, 150.828 kPa, and 154.956 kPa, respectively. (c) The shaft skin resistance under ultimate load is coming close to the maximum value, and the maximum values are 9.792 mm, 7.939 mm, 9.881 mm, and 14.97 mm, respectively. Research results can serve as design bases for the pile foundation of multistorey buildings located in landslide areas of Baishi Mountain in the southwest of China and also as references for the engineering application of pile foundation in similar geological fracture areas.

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Analysis of Embedded Retaining Wall Using the Subgrade Reaction Method

Studia Geotechnica et Mechanica ◽

10.1515/sgem-2015-0008 ◽

2015 ◽

Vol 37 (1) ◽

pp. 59-73 ◽

Cited By ~ 2

Author(s):

Tomasz Pasik ◽

Marek Chalecki ◽

Eugeniusz Koda

Keyword(s):

Retaining Wall ◽

Earth Pressure ◽

Subgrade Reaction ◽

Quaternary Deposits ◽

Limit Values ◽

Reaction Method ◽

Different Types ◽

Subgrade Reaction Method ◽

Internal Forces

Abstract This paper analyzes the distribution of internal forces and displacements of embedded retaining wall in Quaternary deposits and Tertiary clays. Calculations have been based on the Subgrade Reaction Method (SRM) for two different types of earth pressure behind the wall (active, at-rest) in order to show the differences resulting from adopting the limit values. An algorithm for calculation of “cantilever wall” using the Mathematica program was proposed.

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