Quantitative assessment on the variation of compressibility of Wenzhou marine clay during destructuration

Bian, Xia; Ding, Jianwen; Shi, Jian; Qian, Shunzhi

doi:10.1007/s12205-016-0395-7

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…In recent decades, the boom in reef and island engineering has enabled increasingly more land to be reclaimed successfully on the coast or even on the sea. The reclaimed land is mainly composed of dredged marine clay deposits with high initial water content, high compressibility and very low bearing capability 1–5 . Improving the soft soil is an essential and challenging work to ensure short‐term and long‐term stability for superstructures.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear consolidation of soft foundation improved by prefabricated vertical drains based on elliptical cylindrical equivalent model

Tian

Wen

et al. 2021

Num Anal Meth Geomechanics

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This study builds up an elliptical cylindrical equivalent model (ECEM) of prefabricated vertical drains (PVD)‐improved foundation which incorporates the nonlinear variation of compressibility and permeability and the preconsolidate state of soil. An exact solution and a simplified solution are derived for the nonlinear consolidation model under a combined vacuum and surcharge preloading. Considering the stratification of improved soil and the reduction of vacuum pressure along PVD, a precise settlement prediction method is proposed. The rightness and applicability of present solutions are verified by carrying out a series of comparative analyses. Also, a parametric study is conducted to investigate the characteristics of nonlinear consolidation under different Nσ, Cnormalc/Cnormalk, over‐consolidation ratios (OCRs). The results show that, when Cnormalc/Cnormalk=1 the applied load has no impact on the dissipation of excess pore‐water pressure, whereas a larger applied load would induce a quicker settlement rate; the consolidation rate would be underestimated if the over‐consolidated stress history is neglected, and greater OCR produces more obvious underestimation.

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Section: Introductionmentioning

confidence: 99%

Nonlinear consolidation of soft foundation improved by prefabricated vertical drains based on elliptical cylindrical equivalent model

Tian

Wen

et al. 2021

Num Anal Meth Geomechanics

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“…It is recognized that the natural sedimentary clays are generally subjected to soil structure e ects developed during the depositional and the postdepositional processes [1,[38][39][40][41][42][43], resulting in the vertical yield stress (σ p ′ ) often being larger than the e ective overburden pressure. e soil structure results relatively the small deformation of natural clays under e ective vertical stress up to the consolidation yield stress.…”

Section: Assessment On Embankment Settlementsmentioning

confidence: 99%

Settlement of Funing Natural Clays under 14‐Year Embankment Loads: A Case Study

Wang

Zeng

Ding

et al. 2019

Advances in Civil Engineering

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The settlement behavior of soft natural clays under a 14-year embankment load is investigated by obtaining the high-quality undisturbed samples of soft natural clays beneath a constructed embankment. It is found that the conditional way of determining the settlement by combining the layerwise summation method of calculating settlement, the Osterberg method of determining the embankment load-induced stress in subsoil, and the compression parameters determined from high-quality undisturbed samples overestimates the settlement, compared with the field observations. The key cause is that the Osterberg method overestimates the vertical superimposed stress in this case. The modified method of determining the vertical stress in subsoil suggested by the authors is adopted for improving the accuracy of vertical superimposed stress calculated. The balance among errors in the settlement calculation model, determination of vertical superimposed stress induced by embankment loads, and measurement of compression parameters are also discussed.

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Deformation modulus of reconstituted and naturally sedimented clays

Bian

Zeng

et al. 2021

Engineering Geology

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Quantitative assessment on the variation of compressibility of Wenzhou marine clay during destructuration

Cited by 6 publications

References 38 publications

Nonlinear consolidation of soft foundation improved by prefabricated vertical drains based on elliptical cylindrical equivalent model

Nonlinear consolidation of soft foundation improved by prefabricated vertical drains based on elliptical cylindrical equivalent model

Settlement of Funing Natural Clays under 14‐Year Embankment Loads: A Case Study

Deformation modulus of reconstituted and naturally sedimented clays

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