岩土工程学报2012，Vol.34Issue(2)：379-384,6.
天津滨海地区两种典型软黏土蠕变特性试验研究
Experimental research on creep properties of two typical soft clays in coastal region of Tianjin
摘要
Abstract
The non-linear creep characteristics of two typical clays, which are muddy clay and silt clay in the coastal region of Tianjin, are studied by means of triaxial creep tests. The tests are carried out by the step loading method, and the creep curves of the soft clays under different stress states are got from the raw data by Mr. Chen＇s method. Considering with the change law of the stress-strain isoehronal curves, the results of the creep tests are fitted by the Merchant model based on the creep curves. The model parameters are confirmed, and then a non-linear rheological model suitable for these soft clays in the coastal region of Tianjin is established. Based on the comparative analysis of the change law of model parameters, the empirical formulas for the relation of these main parameters with the stress are confirmed finally. It is shown that the modulus of Hooke spring＇s elasticity with stress difference increases in a negative exponent way; and the modulus of Kelvin component＇s elasticity with stress I difference increases in a linear way at the same time.关键词
三轴蠕变试验/Merchant模型/非线性蠕变/天津滨海/软黏土Key words
triaxial creep test/Merchant model/non-linear theology/coastal region of Tianjin/soft clay分类
建筑与水利引用本文复制引用
王元战,黄东旭,尚忠..天津滨海地区两种典型软黏土蠕变特性试验研究[J].岩土工程学报,2012,34(2):379-384,6.基金项目
国家自然科学基金项目(50979069) （50979069）
天津市科技支撑计划重点项目(10JCYBJC03400) （10JCYBJC03400）
天津市自然科学基金项目(10SYSYJC27300) （10SYSYJC27300）
