Lateral cyclic response of an aluminum model pile in sand

Jiunn Shyang Chiou, Zhi Wei Xu, Cheng Chang Tsai, Jin Hung Hwang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Lateral cyclic load tests were performed on an aluminum model pile in dry sand. Two levels of loading were adopted to represent different service load conditions. The maximum number of loading cycles was 1,000. From the test results, it was found that the even though in the service load condition, the pile response was still affected by cyclic effects and a larger load level would produce more significant influence. In a global point of view, the lateral displacement and maximum moment increased with loading cycles, while the secant stiffness within a cycle decreased with cycles. The cyclic effect was more significant on the lateral displacement than on the moment. In a local point of view, cyclic loading would degrade the equivalent subgrade stiffness for the soil shallower than about seven times diameter. In addition, the secant subgrade stiffness within a cycle increased with loading cycles. Some experimental relationships of lateral pile response and loading cycles were built and compared with those in the literature.

Original languageEnglish
Pages (from-to)554-563
Number of pages10
JournalMarine Georesources and Geotechnology
Volume36
Issue number5
DOIs
StatePublished - 4 Jul 2018

Keywords

  • Cyclic loads
  • lateral loads
  • model tests
  • piles
  • sand
  • subgrade stiffness

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