Centrifuge model testing to ascertain vertical displacements of a pile under cyclic lateral loads

2021 ◽  
Vol 22 (9) ◽  
pp. 760-766
Author(s):  
Gang Zheng ◽  
Ji-bin Sun ◽  
Tian-qi Zhang ◽  
Yang Jiao ◽  
Yu Diao
Keyword(s):  
Model Testing ◽  
Lateral Loads ◽  
Centrifuge Model ◽  
Vertical Displacements

scholarly journals Lateral Response of a Single Pile under Combined Axial and Lateral Cyclic Loading in Sandy Soil

2018 ◽  
Vol 4 (9) ◽  
pp. 1996 ◽  
Author(s):  
Muqdad Abdallah Kahribt ◽  
Jasim M. Abbas
Keyword(s):  
Lateral Displacement ◽  
Slenderness Ratio ◽  
Offshore Structures ◽  
Lateral Loading ◽  
Loading Conditions ◽  
Lateral Loads ◽  
Dense Sand ◽  
Lateral Response ◽  
Loading System ◽  
Vertical Displacements

According to practical situation, there have been limited investigations on the response of piles subjected to combined loadings especially when subjected to cyclic lateral loads. Those few studies led to contradictory results with regard to the effects of vertical loads on the lateral response of piles. Therefore, a series of experimental investigation into piles in dense sand subjected to combination of static vertical and cyclic lateral loading were conducted with instrumented model piles. The effect of the slenderness ratio (L/D) was also considered in this study (i.e. L/D= 25 and 40). In addition, a variety of two-way cyclic lateral loading conditions were applied to model piles using a mechanical loading system. One hundred cycles were used in each test to represent environmental loading such as offshore structures. It was found that under combined vertical and cyclic lateral loads the lateral displacement of piles decreased with an increase in vertical load whereas it causes large vertical displacements at all slenderness ratios. In addition, for all loading conditions the lateral, vertical (settlement and upward) displacements and bending moments increased as either the magnitude of cyclic load or the number of cycles increases. 

Centrifuge model testing on reliquefaction characteristics of sand

2018 ◽  
Vol 17 (1) ◽  
pp. 141-157 ◽  
Author(s):  
Bin Ye ◽  
Liang Zhang ◽  
Huihao Wang ◽  
Xudong Zhang ◽  
Ping Lu ◽  
...  
Keyword(s):  
Model Testing ◽  
Centrifuge Model

Centrifuge Model Testing of Loess Landslides Induced by Excavation in Northwest China

2020 ◽  
Vol 20 (4) ◽  
pp. 04020022 ◽  
Author(s):  
Shuo Zhang ◽  
Xiangjun Pei ◽  
Shanyong Wang ◽  
Runqiu Huang ◽  
Xiaochao Zhang
Keyword(s):  
Northwest China ◽  
Model Testing ◽  
Centrifuge Model ◽  
Loess Landslides

Centrifuge static and dynamic lateral pile behaviour

1987 ◽  
Vol 24 (2) ◽  
pp. 198-207 ◽  
Author(s):  
John M. Ting ◽  
Claudia R. Kauffman ◽  
Maryann Lovicsek
Keyword(s):  
Dynamic Stiffness ◽  
Dynamic Test ◽  
American Petroleum Institute ◽  
Test Results ◽  
Lateral Loads ◽  
Centrifuge Model ◽  
Lateral Resistance ◽  
Data Reduction Method ◽  
Pile Resistance ◽  
Static And Dynamic Loading

The behaviour of a single vertical pile embedded in saturated sand and subjected to cyclic static and dynamic loading is studied using an extensive centrifuge model testing program. A reliable data reduction method allows computation of the dynamic and static cyclic lateral pile resistance–deflection p–y curves. The results are compared with full-scale dynamic test results and oil industry design guidelines.From these comparisons, the centrifuge technique appears to model the dynamic soil–pile system properly. For loadings causing significant nonlinearity, the static stiffness appears to be greater than the dynamic stiffness, while material hysteresis appears about the same in each case. Current American Petroleum Institute guidelines for static cyclic loading appear to overestimate the dynamic lateral resistance for medium dense sands. Key words: centrifuge model, cyclic loads, dynamic response, lateral loads, liquefaction, model tests, pile lateral loads.

scholarly journals Centrifuge Model Testing of Liquefaction Mitigation via Microbially Induced Calcite Precipitation

2019 ◽  
Vol 145 (10) ◽  
pp. 04019084 ◽  
Author(s):  
Kathleen M. Darby ◽  
Gabby L. Hernandez ◽  
Jason T. DeJong ◽  
Ross W. Boulanger ◽  
Michael G. Gomez ◽  
...  
Keyword(s):  
Model Testing ◽  
Calcite Precipitation ◽  
Microbially Induced Calcite Precipitation ◽  
Centrifuge Model ◽  
Liquefaction Mitigation
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