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| Consolidation and Creep Behaviors of Two Typical Marine Clays in China | |
| 作者姓名： | 蒋明镜 刘静德 尹振宇 |
| 作者单位： | [1]State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; [2]Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University, Shanghai 200092, China; [3]Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; [4]Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
| 基金项目： | This work was financially supported by China National Funds for Distinguished Young Scientists （Grant No. 51025932）, Program for Changjiang Scholars and Innovative Research Team in University （Grant No. IRT 1029）, Ph.D. Programs Foundation of the Ministry of Education of China （Grant No. 20100072110048） and the National Natural Science Foundation of China （Grant No. 10972158）. |
| 摘 要： | This paper presents an experimental investigation into the deformation characteristics of two typical marine clays obtained from Dalian and Shanghai, respectively, in China. Three kinds of laboratory tests, i.e. conventional oedometer tests, one-dimensional and triaxial creep tests were carried out. The results obtained from consolidation tests demonstrate linear v e ？ log？ relationships for Shanghai clay at normally consolidated state, while partly or even global non-linearrelationships for Dalian clay. The compression index c C for both clays follows the correlation of Cc=0.009（WL-10）where WL is the liquid limit of soil. The relationship between v log Kv （ Kv is the hydraulic conductivity of soil） and voidratio e is generally linear and the hydraulic conductivity change index kv C can be described by their initial void ratio forboth clays. The secondary compressibility of Dalian clay lies in medium to high range and is higher than that of Shanghaiclay which lies in the range of low to medium. Furthermore, based on drained triaxial creep tests, the stress-strain-timerelationships following Mesri＇s creep equation have been developed for Dalian and Shanghai clays which can predict thelong-term deformation of both clays reasonably well. |
| 关 键 词： | marine clay compressibility consolidation creep |
Consolidation and creep behaviors of two typical marine clays in China |
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| JIANG Ming-jing , LIU Jing-de , YIN Zhen-yu.Consolidation and Creep Behaviors of Two Typical Marine Clays in China[J].China Ocean Engineering,2014,28(5):629-644. | |
| Authors: | JIANG Ming-jing LIU Jing-de YIN Zhen-yu |
| Institution: | 1. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University, Shanghai 200092, China;Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China 3. Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
| Abstract: | This paper presents an experimental investigation into the deformation characteristics of two typical marine clays obtained from Dalian and Shanghai, respectively, in China. Three kinds of laboratory tests, i.e. conventional oedometer tests, one-dimensional and triaxial creep tests were carried out. The results obtained from consolidation tests demonstrate linear ve -log relationships for Shanghai clay at normally consolidated state, while partly or even global non-linear relationships for Dalian clay. The compression index cC for both clays follows the correlation of c LC=0.009(w-10) where Lw is the liquid limit of soil. The relationship between vlog k(vk is the hydraulic conductivity of soil) and void ratio e is generally linear and the hydraulic conductivity change index vkC can be described by their initial void ratio for both clays. The secondary compressibility of Dalian clay lies in medium to high range and is higher than that of Shanghai clay which lies in the range of low to medium. Furthermore, based on drained triaxial creep tests, the stress-strain-time relationships following Mesri's creep equation have been developed for Dalian and Shanghai clays which can predict the long-term deformation of both clays reasonably well. |
| Keywords: | marine clay compressibility consolidation creep |
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