Experimental research on cyclic behaviors of clay in the northern region of South China Sea

ZHANG Wei; LI Ya; ZHOU Song-wang; JIANG Zheng-bo; WU Fei; LIANG Wen-zhou

doi:10.16285/j.rsm.2016.2242

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Experimental research on cyclic behaviors of clay in the northern region of South China Sea

更新时间：2026-06-25

- Experimental research on cyclic behaviors of clay in the northern region of South China Sea
- Vol. 39, Issue 7, Pages: 2413-2423(2018)
- 作者机构：
  
  1. 中海油研究总院,北京,100028
  2. 中海油田服务股份有限公司物探事业部,天津,300451
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.2242
  CLC： P751;TU411.8
- Online First：05 August 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
ZHANG Wei, LI Ya, ZHOU Song-wang, et al. Experimental research on cyclic behaviors of clay in the northern region of South China Sea[J]. 2018, 39(7): 2413-2423.
DOI：

ZHANG Wei, LI Ya, ZHOU Song-wang, et al. Experimental research on cyclic behaviors of clay in the northern region of South China Sea[J]. 2018, 39(7): 2413-2423. DOI： 10.16285/j.rsm.2016.2242.

摘要

采用南海北部区域油田场址钻孔原状土样，开展黏土循环动力特性试验研究。结合共振柱与应变控制的循环单剪试验，获取动剪切模量和阻尼比随循环剪应变的变化规律，将最大动剪切模量与原位静力触探的计算结果进行对比。开展应力控制的循环单剪试验，采用对称加载方式获取土样动强度阈值，基于该阈值，通过单、双向加载方式获取土样动强度包络线，并将试验结果与Drammen黏土及世界范围内其余区域黏土进行对比。该研究初步获取了南海北部区域性黏土的循环特性及动力学参数，为南海北部区域油气田结构设计和地质风险评估提供基础资料，掌握了循环动力特性试验方法，为岩土工程动力学试验研究及数据分析提供技术参考。

Abstract

Experimental research on cyclic behaviors of clay is performed based on undisturbed soil samples from the boreholes of oil field sites in northern region of South China Sea. Combined resonant column test and strain-controlled cyclic direct simple shear test

the dynamic shear modulus and damping ratio of the soils over a range of cyclic shear strain are studied. Additionally

the maximum dynamic shear moduli are compared with the calculation results on the basis of cone penetration test. Stress-controlled cyclic direct simple shear test is developed to capture the threshold value of cyclic strength by symmetric loading method. And then

based on the threshold value

the envelope curves of cyclic strength can be obtained by one-way and two-way loading methods. The test data are compared with Drammen clay and other clays obtained from different locations in the world. The cyclic performance and dynamic parameters of soils in the northern region of South China Sea are studied

which provides the basic data for structure design and evaluation of geological risks. Besides

experimental methods of cyclic tests are mastered

which can provide technical reference for dynamic experimental study and data analysis of geotechnical engineering.

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