scholarly journals NONLINEAR HORIZONTAL SOIL RESISTANCE OF PILE GROUP FOUNDATION SUBJECTED TO ARBITARY DIRECTION LOAD

2016 ◽  
Vol 81 (721) ◽  
pp. 505-514 ◽  
Author(s):  
Takaharu NAKANO ◽  
Yuji MIYAMOTO
Keyword(s):  
Pile Group ◽  
Soil Resistance

scholarly journals Comparison of static lateral behavior of three pile group configurations using three-dimensional finite element modeling

2018 ◽  
Vol 55 (1) ◽  
pp. 107-118 ◽  
Author(s):  
Murad Abu-Farsakh ◽  
Ahmad Souri ◽  
George Voyiadjis ◽  
Firouz Rosti
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Three Dimensional ◽  
Pile Group ◽  
Lateral Load ◽  
Material Behavior ◽  
Soil Resistance ◽  
Pile Groups ◽  
Element Modeling ◽  
Lateral Resistance

The lateral resistance of three pile group configurations was investigated using three dimensional (3-D) finite element modeling. The three pile groups considered in the study were a vertical pile group, a battered pile group, and a mix of vertical and battered piles in a group. The study was motivated by the full-scale static load test that was conducted on the M19 pier foundation in the I-10 twin span bridge in Louisiana. The static lateral resistance of the M19 battered pile group was investigated previously using a 3-D finite element simulation and verified with the aid of experimental results. In the present study, the M19 battered pile group model was used as the basis for the vertical and mixed pile groups for developing their 3-D finite element models. The nonlinear material behavior was accounted for using elastoplastic constitutive models such as the concrete damaged plasticity model and the anisotropic modified Cam clay model. The lateral resistance of the pile groups was investigated in terms of load–displacement, axial load, bending moment, pile damage, soil resistance, and p-multipliers. The results show that the battered pile group had the largest lateral resistance, followed by the mixed and vertical pile groups, respectively. The largest lateral load share was carried by the two middle rows in the battered pile group, while it was in the leading row in the vertical and mixed pile groups. The soil resistance profiles show that the vertical pile group mobilized greater soil resistance than the battered and mixed pile groups at the same lateral load. The back-calculated p-multipliers are the highest in the battered pile group case, followed by the mixed and vertical pile groups, respectively.

Study of static lateral behavior of battered pile group foundation at I-10 Twin Span Bridge using three-dimensional finite element modeling

2016 ◽  
Vol 53 (6) ◽  
pp. 962-973 ◽  
Author(s):  
Ahmad Souri ◽  
Murad Abu-Farsakh ◽  
George Voyiadjis
Keyword(s):  
Three Dimensional ◽  
Pile Group ◽  
Lateral Load ◽  
Load Test ◽  
Fe Model ◽  
Soil Resistance ◽  
Group Effect ◽  
Dimensional Finite Element ◽  
Lateral Behavior ◽  
Three Dimensional Finite Element

In this study, the static lateral behavior of a battered pile group foundation was investigated using three-dimensional finite element (FE) analysis. The FE model was used to simulate the static lateral load test that was performed during the construction of the I-10 Twin Span Bridge over Lake Pontchartrain, La., in which two adjacent bridge piers were pulled against each other. The pier of interest was supported by 24, 1:6 batter, 34 m long piles in a 6 × 4 row configuration. The FE model of the battered pile group was developed in Abaqus and verified using the results from the field test. The model utilized an advanced constitutive model for concrete, which allowed distinct behavior in tension and compression, and introduced damage to the concrete stiffness. The soil domain comprised of several layers in which the constitutive behavior of clay layers was modeled using the anisotropic modified Cam-clay (AMCC) model, and for sands using the elastic perfectly plastic Drucker–Prager (DP) model. FE results showed good agreement with the results of the lateral load test in terms of lateral deformations and bending moments. The results showed that the middle rows carried a larger share of lateral load than the first and the last rows. The pile group resisted a maximum lateral load of 2494 t at which the piles were damaged within a 6 m zone from the bottom of the pile cap. The edge piles carried larger internal forces and exhibited more damage compared to the inner piles. The soil resistance profiles showed that soil layering influenced the distribution of resistance between the soil layers. A series of p–y curves were extracted from the FE model, and then used to study the influence of the group effect on the soil resistance. The p–y curves showed that the group effect reduced the soil resistance in all rows, with the lowest resistance in the third row. Finally, the p-multipliers were calculated using the extracted p–y curves, and compared to the reported p-multipliers for vertical pile groups.

Lateral Response of Pile Group

2011 ◽  
Vol 1 (3) ◽  
pp. 13-17
Author(s):  
Jasim M Abbas
Keyword(s):  
Pile Group ◽  
Lateral Response

SIMPLE METHOD FOR STRESS OF PILE DURING EARTHQUAKES OF EMBEDDED FOUNDATION ON PILE GROUP BASED ON SWAY-ROCKING MODEL

1999 ◽  
Vol 64 (523) ◽  
pp. 55-62 ◽  
Author(s):  
Takeshi FUJIMORI ◽  
Kaeko YAHATA ◽  
Toshiaki HATORI ◽  
Taro NAKAGAWA ◽  
Masaru TANAKA
Keyword(s):  
Pile Group ◽  
Simple Method ◽  
Embedded Foundation
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