scholarly journals SEISMIC BEHAVIOR OF PILE-SUPPORTED BUILDING WITH SEMI-RIGID PILE HEAD CONNECTIONS IN LIQUEFIABLE SOIL

2012 ◽  
Vol 77 (677) ◽  
pp. 1089-1097
Author(s):  
Sadayuki ISHIZAKI ◽  
Kohji TOKIMATSU ◽  
Toshiaki NAGAO
Keyword(s):  
Seismic Behavior ◽  
Pile Head ◽  
Rigid Pile ◽  
Liquefiable Soil

Centrifuge Modeling on Seismic Behavior of Pile in Liquefiable Soil Ground

2013 ◽  
Vol 479-480 ◽  
pp. 1139-1143
Author(s):  
Wen Yi Hung ◽  
Chung Jung Lee ◽  
Wen Ya Chung ◽  
Chen Hui Tsai ◽  
Ting Chen ◽  
...  
Keyword(s):  
Seismic Behavior ◽  
Soil Structure ◽  
Lateral Displacement ◽  
Bending Moment ◽  
Soil Liquefaction ◽  
Centrifuge Modeling ◽  
Shaking Table ◽  
Pile Head ◽  
Liquefiable Soil ◽  
Tip Mass

Dramatic failure of pile foundations caused by the soil liquefaction was founded leading to many studies for investigating the seismic behavior of pile. The failures were often accompanied with settlement, lateral displacement and tilting of superstructures. Therefore soil-structure interaction effects must be properly considered in the pile design. Two tests by using the centrifuge shaking table were conducted at an acceleration field of 80 g to investigate the seismic response of piles attached with different tip mass and embedded in liquefied or non-liquefied deposits during shaking. It was found that the maximum bending moment of pile occurs at the depth of 4 m and 5 m for dry sand and saturated sand models, respectively. The more tip mass leads to the more lateral displacement of pile head and the more residual bending moment.

scholarly journals Settlement and bearingcapacity of long pile

Vestnik MGSU ◽  
2015 ◽  
pp. 52-61
Author(s):  
Armen Zavenovich Ter-Martirosyan ◽  
Zaven Grigor’evich Ter-Martirosyan ◽  
Tuan Viet Trinh ◽  
Ivan Nikolaevich Luzin
Keyword(s):  
Analytical Solution ◽  
Bearing Capacity ◽  
Quantitative Estimation ◽  
Pile Head ◽  
Dead Load ◽  
Rigid Pile ◽  
Side Face ◽  
Pile Settlement ◽  
General Force ◽  
Surrounding Soil

When a long pile is interacting with the soil, the combined force applied to the pile head is distributed among the side face and the pile toe inhomogeneously. The toe gets not more than 30 % from the general force, which doesn’t let using the reserves of the bearing capacity of relatively firm soil under the fifth pile. Account for the depth of the pile toe and the dead load of the soil allows increasing the bearing capacity of the soil under the pile toe and decrease the pile settlement in general. For the quantitative estimation of these factors it is necessary to solve the task on the interaction of the rigid long pile with the surrounding soil, which includes under the pile toe, which is absolutely rigid round stamp.The article presents the formulation and analytical solution to a quantification of the settlement of a circular foundation with the due account for its depth, basing on the development of P. Mindlin’s studies as well as the interactions between a long rigid pile and surrounding soils, including under pile toe.It is proposed to compare the estimated value of stresses under the heel of pile with the initial critical load for the round foundation to check the condition that the estinated value is less than the intial critical one.

Analysis for Seismic Response of Compacted Soil-Cement Pile Composite Foundations

2011 ◽  
Vol 368-373 ◽  
pp. 456-460
Author(s):  
Hong Huan Cui ◽  
Li Qun Zhang ◽  
Hai Long Wang
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Seismic Behavior ◽  
Composite Foundation ◽  
Response Analysis ◽  
Compacted Soil ◽  
Rigid Pile ◽  
Soil Cement ◽  
Earthquake Load ◽  
Rigid Pile Composite Foundation

Compacted soil-cement pile possess the excellences both flexible pile and rigid pile. The composite foundation of compacted soil-cement pile are getting more and more applicable to construction． However, the research on their response under dynamic load, especially under earthquake load，is quite limited．Now the seismic response analysis in time domain is performed with finite element method(ABAQUS).Some parameters influencing the anti-seismic behavior of half-rigid pile composite foundation are studied． Based on these research , some conclusions which may be of some value for anti-seismic design of this type of composite foundations are drawn．

Centrifugal Modeling of Seismic Behavior of Large-Diameter Pipe in Liquefiable Soil

2003 ◽  
Vol 129 (12) ◽  
pp. 1092-1101 ◽  
Author(s):  
Hoe I. Ling ◽  
Yoshiyuki Mohri ◽  
Toshinori Kawabata ◽  
Huabei Liu ◽  
Christopher Burke ◽  
...  
Keyword(s):  
Seismic Behavior ◽  
Large Diameter ◽  
Large Diameter Pipe ◽  
Liquefiable Soil ◽  
Diameter Pipe

scholarly journals DISCUSSION ON ESTIMATION METHODS OF PILE HEAD RIGIDITY FOR SIMPLIFIED SEMI-RIGID PILE HEAD CONNECTION

2013 ◽  
Vol 78 (688) ◽  
pp. 1095-1104
Author(s):  
Junji HAMADA ◽  
Tomohiro TANIKAWA ◽  
Tomio TSUCHIYA ◽  
Tetsu USAMI
Keyword(s):  
Estimation Methods ◽  
Pile Head ◽  
Rigid Pile

Comparative Analysis of Different Types of Rigid-Pile-Reinforced Embankments

2013 ◽  
Vol 712-715 ◽  
pp. 845-849
Author(s):  
Wen Feng Huang ◽  
Hai Hong Mo ◽  
Ying Guang Fang
Keyword(s):  
Comparative Analysis ◽  
Bending Moment ◽  
Composite Foundation ◽  
Shearing Force ◽  
Pile Head ◽  
Rigid Pile ◽  
Different Types ◽  
Reinforced Embankments ◽  
Piled Embankments

Due to the fact that the large bending moment and shearing force distributes at the upper-side pile of the available piled embankments when the embankment fill is thick, a rigid grid-pile composite foundation is presented. Using a comparative analysis, the force behaviors for the middle pile, side pile and geogrid in different types of rigid-pile-reinforced embankments are investigated. The research shows that the tension distributing in geogrid decreases by the setting of the pile head or the rigid grid. The setting of the rigid grid contributes obviously to decreasing the bending moment and shearing force at the upper-side pile.

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