Application of Back Analysis on Laterally Loaded Single Pile

doi:10.1007/s12204-015-1679-7

Abstract

Abstract:

In views of the limitations of the existing methods for calculating the pile foundation capacity, a back analysis approach of the $m$-value is introduced. In order to consider the sensitivity of pile behavior to the $m$-value, the relationships between the applied horizontal loads at pile head and the corresponding $m$-value along with the pile stiffness changes are studied. Based on statistics data from the extensive in-situ tests, the back analysis results suggest an exponential expression for the $m$-value in various soil conditions and horizontal displacements at pile head. This method is capable of providing an accurate $m$-value in calculating the pile responses under lateral loads.

Key words: laterally loaded piles|$m$-method|back analysis|horizontal displacement

CLC Number:

U 656.1

Feng WU, Jing-hai GONG, Kun FU. Application of Back Analysis on Laterally Loaded Single Pile[J]. Journal of Shanghai Jiao Tong University(Science), 2015, 20(6): 696-702.

References 17

[1]	JTS 167-4-2012, Code for pile foundation of harbor engineering[S].(in Chinese).
[2]	Wang Mei, Lou Zhi-gang, Li Jian-xiang,et al. Nonlinear analysis of 'm' method for single pile under lateral loading [J]. Rock and Soil Mechanics, 2002, 23(1): 23-27 (in Chinese).
[3]	Wang Bo-hui, Shangguan Xing.New development of bored pile in China [M]. Beijing: China Communications Press, 1999 (in Chinese).
[4]	Zhang Zhong-miao.Pile foundation engineering [M]. Beijing: China Architecture & Building Press, 2007 (in Chinese).
[5]	Karthigeyan S, Ramakrishna V V G S T, Rajagopal K. Numerical investigation of the effect of vertical load on the lateral response of piles[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2007, 133(5): 512-521.
[6]	Yang Min, Zhu Bi-tang.Finite element method used in modeling lateral soil movement due to surcharge loads and its effect on adjacent piles[J]. Journal of Tongji University, 2003, 31(7): 772-777 (in Chinese).
[7]	Fan C C, Long J H.Assessment of existing methods for predicting soil response of laterally loaded piles in sand[J]. Computers and Geotechnics, 2005, 32: 274-289.
[8]	Liu Q S, Li J L. The viscoelastic-plastic displacement back analysis of rock mass with non-stationary parameters [J]. Advanced Materials Research, 2012, 455-456: 1538-1544.
[9]	Yazdani M, Sharifzadeh M, Kamrani K,et al.Displacement-based numerical back analysis for estimation of rock mass parameters in Siah Bisheh powerhouse cavern using continuum and discontinuum approach[J]. Tunnelling and Underground Space Technology, 2012, 28: 41-48.
[10]	Zhang L Q, Yue Z Q, Yang Z F,et al.A displacement-based back-analysis method for rock mass modulus and horizontal in situ stress in tunneling: Illustrated with a case study[J]. Tunnelling and Underground Space Technology, 2006, 21: 636-649.
[11]	Deng X H. Back analysis of initial stress and mechanical parameters in deep buried highway tunnel [J]. Advanced Materials Research, 2011, 261-263: 1738-1742.
[12]	Kaiser P K, Zou D, Lang P A.Stress determination by back analysis of excavation-induced stress changes: A case study[J]. Rock Mechanics and Rock Engineering, 1990, 23(3): 185-200.
[13]	Zou D, Kaiser P K.Determination of in situ stresses from excavation induced stress changes[J]. Rock Mechanics and Rock Engineering, 1990, 23(3), 167-184.
[14]	Hu Ren-li.Analysis and design of pile foundation in bridge engineering [M]. Beijing: China Railway Publishing House, 1987 (in Chinese).
[15]	Sun Wen-jun, Zhu Yan-feng.Back analysis of field test results for laterally loaded piles[J]. Journal of Hohai University, 1994, 22(4): 60-66 (in Chinese).
[16]	Liu Xia-shi.Optimum design of engineering structure [M]. Beijing: Science Press, 1984 (in Chinese).
[17]	Wan Yao-qin, Liang Geng-rong, Chen Zhi-qiang.Common assemblers for optimum calculating method [M]. Beijing: China Worker Publishing House, 1983 (in Chinese).