Poroelastic response of unsaturated soils to cyclic loads with arbitrary waveforms

Wei Cheng Lo, Ronaldo I. Borja, Nan Chieh Chao, Yu Cheng Liu, Jhe Wei Lee

研究成果: Article同行評審

摘要

We develop an analytical solution to the problem of one-dimensional consolidation of unsaturated soil subjected to cyclic loads with arbitrary waveforms. The solution predicts the excess pore water and pore air pressures and the accompanying vertical compression in a poroelastic, unsaturated soil material. Cyclic loading occurs in a variety of engineering applications and often generates higher excess pore fluid pressures and larger vertical compression than does a time-invariant load. In the present study, the loading function is allowed to take on any arbitrary waveform represented by a Fourier trigonometric series. Analytical solution to the boundary-value problem in one dimension is given in closed form describing the frequency-independent and frequency-dependent components of the poroelastic response. We verify the analytical solution through representative examples involving cyclic loads with square and triangular patterns. Apart from the shape of the forcing function, we also investigate the effects of initial water saturation, soil texture, and excitation frequency on the system response.

原文English
頁(從 - 到)679-700
頁數22
期刊International Journal for Numerical and Analytical Methods in Geomechanics
48
發行號3
DOIs
出版狀態Published - 2024 2月 25

All Science Journal Classification (ASJC) codes

  • 計算力學
  • 一般材料科學
  • 岩土工程與工程地質
  • 材料力學

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