Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Geomechanics and Engineering Volume 31, Number 5, December10 2022 , pages 477-488 DOI: https://doi.org/10.12989/gae.2022.31.5.477 |
|
|
|
Effects of inclined bedrock on dissimilar pile composite foundation under vertical loading |
||
Kaiyu Jiang, Weiming Gong,Jiang Xu, Guoliang Dai and Xia Guo
|
||
| Abstract | ||
| Pile composite foundation (PCF) has been commonly applied in practice. Existing research has focused primarily on semi-infinite media having equal pile lengths with little attention given to the effects of inclined bedrock and dissimilar pile lengths. This investigation considers the effects of inclined bedrock on vertical loaded PCF with dissimilar pile lengths. The pile-soil system is decomposed into fictitious piles and extended soil. The Fredholm integral equation about the axial force along fictitious piles is then established based on the compatibility of axial strain between fictitious piles and extended soil. Then, an iterative procedure is induced to calculate the PCF characteristics with a rigid cap. The results agree well with two field load tests of a single pile and numerical simulation case. The settlement and load transfer behaviors of dissimilar 3-pile PCFs and the effects of inclined bedrock are analyzed, which shows that the embedded depth of the inclined bedrock significantly affects the pile-soil load sharing ratios, non-dimensional vertical stiffness N0/wdEs, and differential settlement for different length-diameter ratios of the pile l/d and pile-soil stiffness ratio k conditions. The differential settlement and pile-soil load sharing ratios are also influenced by the inclined angle of the bedrock for different k and l/d. The developed model helps better understand the PCF characteristics over inclined bedrock under vertical loading. | ||
| Key Words | ||
| boundary element method; inclined bedrock; fictious pile; pile composite foundation; vertical loading | ||
| Address | ||
| Kaiyu Jiang: Key of Laboratory for RC and PRC Structure of Education Ministry, Southeast University, Nanjing 211189, China; School of Civil Engineering, Southeast University, Nanjing 211189, China; School of Civil Engineering, Chongqing Three Gorges University, Chongqing, 404100, China Weiming Gong and Guoliang Dai:Key of Laboratory for RC and PRC Structure of Education Ministry, Southeast University, Nanjing 211189, China; School of Civil Engineering, Southeast University, Nanjing 211189, China Jiang Xu: College of Civil Science and Engineering, Yangzhou University, Yangzhou, 225000, China Xia Guo: Nuclear Industry Huzhou Survey Planning & Design Institute Co., Ltd. , Zhejiang, 313002, China | ||