Nonlinear analysis of the response of a single pile subjected to tension load using a hyperbolic model

2016 ◽  
Vol 22 (2) ◽  
pp. 181-191 ◽  
Author(s):  
Shuai Cheng ◽  
Qian-qing Zhang ◽  
Shu-cai Li ◽  
Li-ping Li ◽  
Shi-min Zhang ◽  
...  
Keyword(s):  
Nonlinear Analysis ◽  
Hyperbolic Model ◽  
Single Pile ◽  
Tension Load

Analysis on Response of a Single Pile Subjected to Tension Load Using a Softening Model and a Hyperbolic Model

2014 ◽  
Vol 33 (2) ◽  
pp. 167-176 ◽  
Author(s):  
Qian-Qing Zhang ◽  
Shu-Cai Li ◽  
Qian Zhang ◽  
Li-Ping Li ◽  
Bo Zhang
Keyword(s):  
Hyperbolic Model ◽  
Single Pile ◽  
Tension Load

The Review on the Modified Exponential Model in the Fitting of Loading-Settlement Curves of Single Pile

2014 ◽  
Vol 501-504 ◽  
pp. 892-904
Author(s):  
Yu Chuan Shuan ◽  
Bo Yang Ding ◽  
Ming Ouyang
Keyword(s):  
Static Load ◽  
Exponential Model ◽  
Measured Data ◽  
Load Test ◽  
Hyperbolic Model ◽  
Single Pile ◽  
Static Load Test ◽  
Single Piles ◽  
Test Pile ◽  
Better Than

According to optimized fitting analysis for measured data in static load test of 22 different types of single piles, a new modified exponential model was proposed by authors in this paper. In comparison between the hyperbolic model and the integrated exponential curve model, the correlativity coefficients R of the modified exponential model were over 0.996. The fitting effect of the model of proposed in this paper is better than that of other models above-mentioned. The deviations between fitting and measured data in static load test for single pile was small, especially, in the tail pasts of fitting curves, the mean deviations of 2 test pile given in the paper are 1.61% and 1.99% respectively. The modified exponential model can be better described Q-S curves of single piles. It can be used to better evaluate the ultimate bearing capacity of single piles.

Response of a Single Pile Subjected to Tension Load by Using Softening Models

2017 ◽  
Vol 54 (1) ◽  
pp. 24-31 ◽  
Author(s):  
Fei Xu ◽  
Qian-Qing Zhang ◽  
Li-Ping Li ◽  
Kang Wang ◽  
Shi-Min Zhang ◽  
...  
Keyword(s):  
Single Pile ◽  
Tension Load

scholarly journals NON-LINEAR ANALYSIS OF AN INTEGRAL BRIDGE

2010 ◽  
Vol 16 (3) ◽  
pp. 387-394 ◽  
Author(s):  
Jamaloddin Noorzaei ◽  
Aeid. A. Abdulrazeg ◽  
Mohamed Saleh Jaafar ◽  
Omid Kohnehpooshi
Keyword(s):  
Nonlinear Analysis ◽  
Degrees Of Freedom ◽  
Near Field ◽  
Element Model ◽  
Soil Mass ◽  
Linear Analysis ◽  
Hyperbolic Model ◽  
Integral Abutment ◽  
Soil Response ◽  
The Difference

This study describes the implementation of a 2‐D finite element model of an integral abutment bridge (IAB) system which explicitly incorporates the nonlinear soil response. The superstructure members have been represented by means of three‐node isoparametric beam elements with three degrees of freedom per node. The soil mass is idealized by eight node isoperimetric quadrilateral element at near field and five node isoparametric infinite element to simulate the far field behavior of the soil media. The non‐linearity of the soil mass has been represented by using the Duncan and Chang hyperbolic model. The applicability of this model was demonstrated by analyzing a single span IAB. This study has shown that the soil nonlinearity has significant effect on the response of the structure, where the displacement that have been obtained on basis of nonlinear analysis is 1.5–2.0 times higher than that obtained from linear analysis. The stress magnitudes in the nonlinear analysis are also higher where in some point the difference reached almost 3 times. Santrauka Straipsnyje aprašoma, kaip taikomas 2‐D baigtiniu elementu metodas tilto sistemai su integraliniais ramtais analizuoti, apimant ir netiesine grunto elgsena. Antžemines tilto dalies laikantieji elementai modeliuojami taikant triju mazgu izoparametrinius strypinius elementus su trimis laisves laipsniais kiekviename mazge. Grunto masyvui modeliuoti taikomi aštuoniu mazgu izoparametriniai ketursieniai elementai arti tilto esančioje aplinkoje ir penkiu mazgu izoparametriniai begaliniai elementai, imituojantys grunto terpes elgsena nuo tilto nutolusiose srityse. Grunto masyvo elgsenos netiesiškumas ivertinamas Duncan ir Chang hiperboliniu modeliu. Jo tinkamumas aiškinamas analizuojant vieno tarpatramio integralini tilta. Atlikti tyrimai parode, kad grunto savybiu netiesiškumas turi didele itaka tilto konstrukciju elgsenai. Tilto poslinkiai, nustatyti taikant netiesine analize, yra 1,5–2,0 karto didesni už poslinkius, nustatytus taikant tiesine analize. Atlikus netiesine analize nustatyti itempiai taip pat yra didesni, o kai kuriais atvejais skirtumas siekia beveik tris kartus.

A Modified Shear Displacement Method for Calculating Settlement of Single Pile

2011 ◽  
Vol 261-263 ◽  
pp. 1804-1808 ◽  
Author(s):  
Qian Qing Zhang ◽  
Zhong Miao Zhang
Keyword(s):  
Shear Displacement ◽  
Hyperbolic Model ◽  
Single Pile ◽  
Displacement Method ◽  
Stress Strain ◽  
Modified Model ◽  
Modified Method ◽  
Shear Displacement Method ◽  
Strain Relationship ◽  
Relationship Of

A modified shear displacement method is presented to analyze the load-settlement response of a single pile in homogenous soil using two models. One model adopts a hyperbolic model to simulate the stress-strain relationship of soil under shear stress before failure occurs, and the other model uses a non-linear stress-strain relationship to evaluate the load-displacement behavior of the soil beneath the pile base. Comparisons of the load-settlement responses between the present modified model and the model suggested by Randolph and Wroth are given to demonstrate the effectiveness and accuracy of the proposed modified method.

A simplified nonlinear approach for single pile settlement analysis

2012 ◽  
Vol 49 (11) ◽  
pp. 1256-1266 ◽  
Author(s):  
Qian-qing Zhang ◽  
Zhong-miao Zhang
Keyword(s):  
Nonlinear Analysis ◽  
Relative Displacement ◽  
Single Pile ◽  
Displacement Response ◽  
Nonlinear Approach ◽  
Settlement Behavior ◽  
Proposed Model ◽  
Loading Case ◽  
Load Displacement ◽  
Settlement Analysis

A simple analytical approach for nonlinear analysis of the load–displacement response of a single pile is presented. Two models are adopted in the proposed approach. One model uses a softening nonlinear relationship to simulate the degradation behavior between the unit skin friction and the pile–soil relative displacement developed in the pile–soil interface, and the other model adopts a bilinear load–displacement relationship to capture the pile-end response. Based on the two proposed models, a highly effective computer program has been developed for nonlinear analysis of the load–settlement behavior of a single pile. Comparisons are made between the present method, other analytical methods, and a well-documented field experimental pile loading case. The results of the comparisons indicate that the proposed method is generally in good agreement with field-observed behavior and the calculated results derived from other approaches. A parametric study is conducted to assess the influence of the parameters related to the proposed model on the load–displacement response of a single pile.

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