文档介绍：岩
土
工
程
学
报
第 33卷
2011 年
第 6 期
6 月
June 2011
Chinese Journal of Geotechnical Engineering
土的抗剪真强度探索
蔡 建 1,蔡继锋 2
(1. 中交上海航道勘察设计研究院有限公司,上海 200120;2. 江苏城市职业学院,江苏南通 226000)
摘
要:为了研究土的含水率不变时土的抗剪强度与有效应力的关系,根据土的卸载抗剪强度的计算方法,结合超固
结土与正常固结土的应力关系,分析了加载和卸载过程中土的抗剪强度的变化规律,然后从理论上分析出伏斯列夫在
试验的基础上提出真强度理论的两个真强度参数的计算公式。经过推导得出了伏斯列夫土的抗剪真强度线的理论解。最后通过求极限和求导数的方法由伏斯列夫超固结土真强度理论得到真正意义上同一结构的超固结土、正常固结土、欠固结土的抗剪真强度的计算公式。
关键词:抗剪真强度;卸载抗剪强度;超固结土;正常固结土
中图分类号:TU43
文献标识码:A
文章编号:1000–4548(2011)06–0934–06
作者简介:蔡建(1966–),男,江苏如东人,博士,从事岩土工程专业设计、检测研究工作。E-mail: cjshiw@。
True shear strength of soil
CAI Jian1, CAI Ji-feng2
(1. Shanghai Waterway Engineering Design and Consulting Co., Ltd., , Shanghai 200120, China; 2. Jiangsu City Vocation College,
Nantong 226000, China)
Abstract: In order to investigate the relation between the shear strength and the effective normal stress of soil under the same water content, according to the methods for unloading shear strength of soil, the variation rules of shear strength of the soil under loading and unloading conditions are analyzed considering the stress relation between over-consolidated soil and normally consolidated soil. Formulas for the two true strength parameters of the true strength theory based on the tests by Hvorslev are proposed. Finally, the formula of shear strength with the same structure in a real sense for over-consolidated soi