黏土中桶式基础的宏单元模拟

Translated title of the contribution: Macroelement modelling of caisson foundation in clay

Jia Ying Chen, Jing Cheng Teng, Zhen Yu Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

The purpose of this study is to model the caisson in clay from a complete finite element analysis to a simplified microelement modeling. First, the finite element method is used to analyze the caisson foundation in clay under different monotonic combined loadings. To ensure the reliability of the simulation results, the hardened soil model (HS) is adopted to simulate the normally consolidated clay. The effectiveness of the finite element analysis using the HS model is verified through comparing with centrifugal tests, and the swipe tests with radial displacement control is further extended to the study of failure modes in V-H-M (vertical force-horizontal force-bending moment) space. A three-dimensional failure envelope formula for the caisson foundation in clay in V-H-M space is proposed. Then, using this three-dimensional failure envelope formula, a macroelement design model for the caisson foundation in clay is proposed using a hypoplastic framework. By comparing with the experimental results, the validity of the strength and deformation response of the caisson foundation under simulated monotonic and cyclic loading conditions are verified. The proposed macroelement based model is practically useful in marine geotechnical design.

Translated title of the contributionMacroelement modelling of caisson foundation in clay
Original languageChinese (Simplified)
Pages (from-to)3823-3830
Number of pages8
JournalYantu Lixue/Rock and Soil Mechanics
Volume41
Issue number11
DOIs
Publication statusPublished - 10 Nov 2020

Keywords

  • Caisson foundation
  • Clay
  • Cyclic loading
  • Failure envelope
  • Finite element method
  • Macro-element

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

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