A NUMERICAL METHOD FOR DETERMINING PRE-CONSOLIDATION PRESSURE

CAI Qingchi; XIE Hankang

doi:10.13204/j.gyjzG20061201

Volume 51 Issue 5

Sep. 2021

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CAI Qingchi, XIE Hankang. A NUMERICAL METHOD FOR DETERMINING PRE-CONSOLIDATION PRESSURE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 164-167,187. doi: 10.13204/j.gyjzG20061201

Citation:

CAI Qingchi, XIE Hankang. A NUMERICAL METHOD FOR DETERMINING PRE-CONSOLIDATION PRESSURE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 164-167,187. doi: 10.13204/j.gyjzG20061201

CAI Qingchi, XIE Hankang. A NUMERICAL METHOD FOR DETERMINING PRE-CONSOLIDATION PRESSURE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 164-167,187. doi: 10.13204/j.gyjzG20061201

Citation:

CAI Qingchi, XIE Hankang. A NUMERICAL METHOD FOR DETERMINING PRE-CONSOLIDATION PRESSURE[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 164-167,187. doi: 10.13204/j.gyjzG20061201

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A NUMERICAL METHOD FOR DETERMINING PRE-CONSOLIDATION PRESSURE

doi: 10.13204/j.gyjzG20061201

Department of Civil Engineering, Ningde Normal University, Ningde 352100, China

Received Date: 2020-06-12
Available Online: 2021-09-16
Publish Date: 2021-09-16

Abstract

Abstract

The Casagrande method is a famous graphic method to obtain pre-consolidation pressure from consolidation test data, in which the one of the procedures is fitting the second half curve of compression curves based on the point of the greatest curvature. In the light of complexity and hard to control proper scales for the traditional graphic method, a program was developed by the software of MATLAB to calculate pre-consolidation pressure. Analysis on the deficiency of Harris Model on processing compression curves and taking account of disturbed factors for soil specimens, a new parameter from test was adopted, and the modified calculation method about the pre-consolidation pressure was proposed based on Harris model. It was shown that the calculated results by the modified method accorded with the actal pre-consolidation pressure for tests at medium and high pressure. Furthermore, soil consolidation experiments should contain higher pressure which could be 1 600 to 3 200 kPa.
- pre-consolidation pressure,
- Harris model,
- numerical calculation

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References(13)

References

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