| Effect of Sample Disturbance on Unconfined Compression Strength of Natural Marine Clays |
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| 作者姓名： | 刘汉龙 洪振舜 |
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| 作者单位： | eotechnical Institute，Institute of Geotechnical Engineering Hohai University，Nanjing 210024，China，Southeast University，Nanjing 210096，China |
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| 基金项目： | ThisresearchprojectwasfinanciallysupportedbyChina DutchCooperationProjectonWaterResourcesEducationandDomesticResearchFellowshipoftheMinistryofScienceandTechnology,Japan (1999-2 0 0 1) |
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| 摘 要： | 1 .IntroductionCoastalstructuresoftenencountersettlementandstabilityproblemsofsoftmarinefoundation (Liuetal.,1 999;Zhouetal.,2 0 0 0 ;Liuetal.,2 0 0 3) .Manyresearchershaveillustratedthatnaturalmarineclaysaregenerallysubjectedtotheeffectsofsoilstructureduringtheirdepositionalandpost depositionalprocesses (Zhangetal.,1 995;Hongetal.,2 0 0 3a ;2 0 0 3b) .Thesoilstructureofnat uralmarineclaysiseasilydamagedduringsamplingandhandlingbecausenaturalmarineclaysgeneral lyhavehighwatercontentandlowsti…
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Effect of Sample Disturbance on Unconfined Compression Strength of Natural Marine Clays |
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| LIU Han-long a, and HONG Zhen-shunb aGeotechnical Institute,Hohai University,Nanjing ,China bInstitute of Geotechnical Engineering,Southeast University,Nanjing ,China.Effect of Sample Disturbance on Unconfined Compression Strength of Natural Marine Clays[J].China Ocean Engineering,2003,17(3). |
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| Authors: | LIU Han-long a and HONG Zhen-shunb aGeotechnical Institute Hohai University Nanjing China bInstitute of Geotechnical Engineering Southeast University Nanjing China |
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| Institution: | LIU Han-long a,1 and HONG Zhen-shunb aGeotechnical Institute,Hohai University,Nanjing 210024,China bInstitute of Geotechnical Engineering,Southeast University,Nanjing 210096,China |
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| Abstract: | Quantitatively correcting the unconfined compressive strength for sample disturbance is an important research project in the practice of ocean engineering and geotechnical engineering. In this study, the specimens of undisturbed natural marine clay obtained from the same depth at the same site were deliberately disturbed to different levels. Then, the specimens with different extents of sample disturbance were trimmed for both oedometer tests and unconfined compression tests. The degree of sample disturbance SD is obtained from the oedometer test data. The relationship between the unconfined compressive strength q u and SD is studied for investigating the effect of sample disturbance on q u. It is found that the value of q u decreases linearly with the increase in SD. Then, a simple method of correcting q u for sample disturbance is proposed. Its validity is also verified through analysis of the existing published data. |
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| Keywords: | correcting method degree of sample disturbance liquid limit natural marine clays natural water content oedometer test data unconfined compressive strength |
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