Experimental Studies on the Dynamic Shear Modulus and Damping Ratio Characteristics of Marine Soils in the Jintang Strait

CHEN Guoxing

您当前的位置：

首页 >

文章列表页 >

Experimental Studies on the Dynamic Shear Modulus and Damping Ratio Characteristics of Marine Soils in the Jintang Strait

更新时间：2025-09-25

- Experimental Studies on the Dynamic Shear Modulus and Damping Ratio Characteristics of Marine Soils in the Jintang Strait
- Issue 1, Pages: 1-8(2020)
- 作者机构：
  
  南京工业大学岩土工程研究所,江苏,南京,210009
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Published：2020
- 稿件说明：
移动端阅览
陈国兴,杨文保,岳文泽,秦悠.金塘海峡海洋土动剪切模量与阻尼比特性研究∗[J].防灾减灾工程学报,2020,(1):1-8

CHEN Guoxing. Experimental Studies on the Dynamic Shear Modulus and Damping Ratio Characteristics of Marine Soils in the Jintang Strait[J]. 2020, (1): 1-8.
陈国兴,杨文保,岳文泽,秦悠.金塘海峡海洋土动剪切模量与阻尼比特性研究∗[J].防灾减灾工程学报,2020,(1):1-8 DOI：

CHEN Guoxing. Experimental Studies on the Dynamic Shear Modulus and Damping Ratio Characteristics of Marine Soils in the Jintang Strait[J]. 2020, (1): 1-8. DOI：

摘要

为探究金塘海峡各类海洋土的动剪切模量G与阻尼比λ特征，对金塘海峡四个钻孔不同埋深的各类原状海洋土进行了系列室内共振柱试验，试验结果表明：(1) 各类海洋土均呈现出“低剪切模量，高阻尼比”的强非线性与滞后性特性；各类海洋土的最大动剪切模量Gmax均随埋深的增加而增大，且粉质黏土、粉土、粉质黏土混粉砂、粉砂的Gmax随埋深的增长速率依次减慢。(2) 随着埋深的增加，各类海洋土的G/Gmax — γ曲线移向右上侧，非线性特性减弱；相反，λ — γ曲线移向右下侧，土体的滞后性减弱。(3) 给出了金塘海峡各类海洋土G/Gmax — γ和λ — γ曲线随埋深变化的参数值。

Abstract

In order to explore the characteristics of dynamic shear modulus G and damping ratio λ for various marine soils in the Jintang Strait

a series of resonant column tests were carried out on various undisturbed marine soils with different depth from four sampling boreholes in the Jintang Strait. The test results show that: (1) various marine soils exhibit strong nonlinearity and hysteresis characterized by “low shear modulus and high damping ratio”; the maximum dynamic shear modulus Gmax for various marine soils increases with increasing depth

and the increasing rate of Gmax with soil depth decreases follwing the sequence of silty clay

silt

silty clay mixed silty sand and silty sand. (2) with increasing depth

the G/Gmax — γ curves of various marine soils shift towards the upper right characterized by low nonlinearity

while the λ — γ curves move downward and rightward characterized by decreasing hysteresis. (3) parameters of G/Gmax — γ and λ — γ curves of various marine soils with depth in the Jintang Strait are presented.

关键词

Keywords

references

Koutsoftas D C,Fisher J A.Dynamic properties of two marine clays?[J].Journal of the Geotechnical Engineering Division,ASCE,1980,106(6):645-657.?

Kagawa T.Moduli and damping factors of soft marine clays?[J].Journal of Geotechnical Engineering,ASCE,1992,118(9):1 360-1 375.?

Vrettos C,Savidis S.Shear modulus and damping for Mediterranean sea clays of medium plasticity?[M].Rotterdam,Balkema：Earthquake Geotechnical Engineering,1999:71-76.?

Lanzo G,Pagliaroli A,Tommasi P,et al.Simple shear testing of sensitive,very soft offshore clay for wide strain range?[J].Canadian Geotechnical Journal,2009,46(11):1 277-1 288.?

孙田,陈国兴,周恩全,等.琼州海峡100 m以浅海洋土动剪切模量比和阻尼比试验研究?[J].岩土工程学报,2013,35(增2):375-382. Sun T,Chen G X,Zhou E Q,et al.Experimental study on dynamic shear modulus ratio and damping ratio of marine soils in Qiongzhou Strait with depth less than 100 m?[J].Chinese Journal of Geotechnical Engineering,2013,35(Sup 2):375-382.(in Chinese)?

兰景岩,刘化涤,吕悦军,等.渤海海域典型场地土的动剪切模量比和阻尼比的统计值?[J].地震研究,2012,35(2):260-267. Lan J Y,Liu H D,Lyu Y J,et al.Statistical value of dynamic shear modulus ratio and damping ratio of the soils in bohai sea?[J].Journal of Seismological Research,2012,35(2):260-267.(in Chinese)?

Chen G X,Zhao D F,Chen W Y,et al.Excess pore-water pressure generation in cyclic undrained testing?[J].Journal of Geotechnical and Geoenvironmental Engineering,ASCE,2019,145(7),04019022.?

Hardin B O,Drnevich V P.Shear modulus and damping in soils:design equations and curves?[J].Journal of the Soil Mechanics and Foundations Division,ASEC,1972,98(7):667-692.?

杨文保,吴琪,陈国兴.长江入海口原状土动剪切模量预测方法探究?[J].岩土力学,2019,40(10):3 889-3 896. Yang W B,Wu Q,Chen G X.Study on dynamic shear modulus prediction method of undisturbed soil in the estuary of the Yangtze River ?[J].Rock and Soil Mechanics,2019,40(10):3 889-3 896.(in Chinese)?

Martin P P,Seed H B.One-dimensional dynamic ground response analyses?[J].Journal of the Geotechnical Engineering Division,ASCE,1982,108(7):935-952.?

陈国兴,刘雪珠,朱定华,等.南京新近沉积土动剪切模量比与阻尼比的试验研究?[J].岩土工程学报,2006,28(8):1 023-1 027. Chen G X,Liu X Zh,Zhu D H,et al.Experimental studies on dynamic shear modulus ratio and damping ratio of recently deposited soils in Nanjing?[J].Chinese Journal of Geotechnical Engineering,2006,28(8):1023-1 027.(in Chinese)?

陈国兴,卜屹凡,周正龙,等.沉积相和深度对第四纪土动剪切模量和阻尼比的影响?[J].岩土工程学报,2017,39(7):1 344-1 350. Chen G X,Bu Y F,Zhou Zh L,et al.The influence of quaternary soil sedimentary facies and depth on the normalized dynamic shear modulus and damping ratio over a wide strain range?[J].Chinese Journal of Geotechnical Engineering,2017,39(7):1 344-1 350.(in Chinese)

Views

1311

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on Dynamic Characteristics and Microstructure of Steel Slag Filler Considering Time Effects

Effect of Deposition Orientation on the Dynamic Shear Modulus and Damping Ratio of Coral Sand

Influence of Rubber Gravel Grade on the Cyclic Shear Properties of the Reinforced‑Soil Interface

Comparison Research on the Normalized Dynamic Shear Modulus and Damping Ratio by Resonant Column and Cyclic Triaxial Tests

Related Author

JIANG Fei

WANG Liyan

LIU Tao

YU Yaohong

WANG Binghui

NONG Zhenzhen

XU Zihao

QIN You

Related Institution

School of Archifecture and Civil Engineering, Jiangsu University of Science and Technology

School of Mechanical Engineering, Nanjing University of Science and Technology

Civil Engineering and Earthquake Disaster Prevention Center of Jiangsu Province

School of Mechanics and Engineering Science, Shanghai University

Shanghai Pudong Architectural Design and Research Institute Co., Ltd.

⁰