基于流变仪测试超软土强度的试验方法

鲁双; 范宁; 年廷凯; 赵维; 吴昊

doi:10.11779/CJGE2017S1018

基于流变仪测试超软土强度的试验方法 English Version

鲁双¹,
范宁¹,
年廷凯^1,2,3, ,,
赵维¹,
吴昊¹

1. 大连理工大学海岸和近海工程国家重点实验室,辽宁大连 116024;
2. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州 221008;
3. 国土资源部海洋油气资源与环境地质重点实验室,山东青岛 266071

基金项目: 国家自然科学基金项目（51579032）; 国土资源部海洋油气资源与环境地质重点实验室基金项目（MRE201304）; 中国矿业大学深部岩土力学与地下工程国家重点实验室基金项目（SKLGDUEK1307）

详细信息

作者简介:
鲁双(1991-),女,硕士研究生,主要从事超软土强度分析方面研究。E-mail:Lushuang91@126.com。

通讯作者:
年廷凯，E-mail：tknian@dlut.edu.cn

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出版历程
- 收稿日期: 2016-11-27
- 发布日期: 2017-11-19

Experimental approach for strength of ultra-soft clay by using rheometer

1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
2. State Key Laboratory for Geomechanics GeoMechanicsand Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221008, China;
3. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China

摘要

摘要: 随着中国港口工程建设与海洋资源开发的快速发展,遇到了许多涉及超软土的工程问题。对这类具有一定流动性的超软土,常规土工测试方法难以有效地测量其强度。引入流体测试中的流变仪,开展了多组超软土试样的强度和流变特性试验研究,在对试验结果深入分析的基础上,系统探讨了转子尺寸、剪切速率增量和转子轴杆摩阻力对测试结果的影响,提出了一种使用流变仪进行超软土强度测试的有效方法。通过与前人测试结果进行对比分析,验证了该仪器和测试方法的可靠性,从而为超软土不排水剪切强度的有效测量提供了新的途径。
- 超软土 /
- 流变仪 /
- 剪切速率 /
- 不排水剪切强度
Abstract: The actual engineering problems induced by super low-strength soft clay are paid more and more attention with the rapid development of port and ocean engineering. However, the routine geotechnical experimental method can not test the strength of this kind of soft clay effectively. A RST rheometer used in fluid tests is introduced here to carry out some experiments on the strength and rheological characteristics of the ultra-soft clay. Based on the comprehensive analysis of the experimental results, the quantitative effects of spindles size, strain rate increment and shaft friction are systematically discussed, and an effective experimental approach to test the strength of the ultra-soft clay is offered. Compared with those of the conventional rheometer, the accuracy and the reliability of this apparatus are verified. The new device provides a new way to test the undrained shear strength of ultra-soft clay in submarine engineering.
- ultra-soft clay /
- rheometer /
- shear rate /
- undrained shear strength

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参考文献(13)

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