Small-strain shear modulus prediction model related to grain gradation of coral sand

LIANG Ke; YUE Chong; ZHOU Zhenglong; HANG Tianzhu

doi:10.11835/j.issn.2096-6717.2022.121

您当前的位置：

首页 >

文章列表页 >

Small-strain shear modulus prediction model related to grain gradation of coral sand

Earthquake Disaster Prevention and Mitigation Engineering | 更新时间：2023-11-21

- Small-strain shear modulus prediction model related to grain gradation of coral sand
- Journal of Civil and Environmental Engineering Vol. 45, Issue 6, Pages: 95-103(2023)
- 作者机构：
  
  1.北京工业大学城市与工程安全减灾教育部重点实验室,北京 100124
  2.南京工业大学岩土工程研究所,南京 210009
- 作者简介：
  
  LIANG Ke (1991- ), PhD, main research interest: soil dynamics, E-mail: liangk91@163.com.
- 基金信息：
  
  Beijing Natural Science Foundation(8224082);China Postdoctoral Science Foundation(2021M700309)
- DOI：10.11835/j.issn.2096-6717.2022.121
  CLC： TU441;TU411.8
- Received：27 July 2022，
  
  Published：25 December 2023
- 稿件说明：
移动端阅览
梁珂,岳冲,周正龙等.考虑级配影响的珊瑚砂最大动剪切模量试验研究[J].土木与环境工程学报,2023,45(06):95-103.

LIANG Ke,YUE Chong,ZHOU Zhenglong,et al.Small-strain shear modulus prediction model related to grain gradation of coral sand[J].Journal of Civil and Environmental Engineering,2023,45(06):95-103.
梁珂,岳冲,周正龙等.考虑级配影响的珊瑚砂最大动剪切模量试验研究[J].土木与环境工程学报,2023,45(06):95-103. DOI： 10.11835/j.issn.2096-6717.2022.121.

LIANG Ke,YUE Chong,ZHOU Zhenglong,et al.Small-strain shear modulus prediction model related to grain gradation of coral sand[J].Journal of Civil and Environmental Engineering,2023,45(06):95-103. DOI： 10.11835/j.issn.2096-6717.2022.121.

摘要

对不同级配的南沙岛礁珊瑚砂进行共振柱试验，测试不同孔隙比

的珊瑚砂在20~300 kPa围压下的最大动剪切模量

，分析不均匀系数

、平均粒径

和细粒含量

对珊瑚砂

的影响，并建立珊瑚砂的

经验模型。结果表明：珊瑚砂的孔隙比

普遍大于陆源砂砾土；同一有效围压

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=50179495&type=

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=50179491&type=

1.18533325

4.14866638

下，珊瑚砂的

曲线随

的增大而降低，随

的增大而升高，以

≈20%为界，随

的增大先降低后缓慢升高；陆源砂砾土的

经验模型将低估珊瑚砂的

值；

对

影响的本质是不同细粒含量的珊瑚砂具有不同的

和

，

和

对

的影响隐含了

对

的影响。基于Hardin模型给出考虑

、

影响的珊瑚砂

预测模型，并引入修正系数

，以考虑颗粒类型等复杂因素的综合影响，采用不同海洋珊瑚砂的试验数据对

预测模型进行验证。

Abstract

A series of resonant column tests were conducted on coral sand taken from the Nansha Islands

South China Sea with different grain gradations. The small-strain shear modulus

of the coral sands with various void ratio

with the confining stress of 20~300 kPa was obtained. The influence of coefficients of uniformity

mean particle size

and fines content

of coral sand was investigated

and the

formulation for coral sand was established. For the constant effective confining pressure

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=50179496&type=

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=50179500&type=

1.18533325

4.14866638

the curve of

moves downward as the increasing

and moves upward as the increasing

. The

firstly decreases and then increases as the increasing

and the

reaches the minimum value for

of about 20%. The

prediction equations of terrigenous sandy and gravelly soils will obviously underestimate the

value of coral sand. The influence of

essentially results from the change of

and

for coral sand with various

. The

prediction equation of coral sand related to

and

which implies the influence of

was proposed

and the correction factor

related to the morphology and mineralogy of the particle form of coral sands was incorporated in the proposed

prediction equation. The validity of the

prediction equation was verified by comparing the measured and predicted

values of coral sands from different seas.

关键词

Keywords

references

YANG J , GU X Q . Shear stiffness of granular material at small strains: Does it depend on grain size [J]. Géotechnique , 2013 , 63 ( 2 ): 165 - 179 .

顾晓强 , 杨峻 , 黄茂松 , 等 . 砂土剪切模量测定的弯曲元、共振柱和循环扭剪试验 [J]. 岩土工程学报 , 2016 , 38 ( 4 ): 740 - 746 .

GU X Q , YANG J , HUANG M S , et al . Combining bender element, resonant column and cyclic torsional shear tests to determine small strain shear modulus of sand [J]. Chinese Journal of Geotechnical Engineering , 2016 , 38 ( 4 ): 740 - 746 . (in Chinese)

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 , 1972 , 98 ( 7 ): 667 - 692 .

HARDIN B O , Jr RICHART F E . Elastic wave velocities in granular soils [J]. Journal of the Soil Mechanics and Foundations Division , 1963 , 89 ( 1 ): 33 - 65 .

MENQ F . Dynamic properties of sandy and gravelly soils [D]. Austin : The University of Texas , 2003 .

WICHTMANN T , TRIANTAFYLLIDIS T . Influence of the grain-size distribution curve of quartz sand on the small strain shear modulus G max [J]. Journal of Geotechnical and Geoenvironmental Engineering , 2009 , 135 ( 10 ): 1404 - 1418 .

LIU X , YANG J . Influence of size disparity on small-strain shear modulus of sand-fines mixtures [J]. Soil Dynamics and Earthquake Engineering , 2018 , 115 : 217 - 224 .

毕昇 , 陈国兴 , 周正龙 , 等 . 细粒含量及固结应力对饱和砂土动剪切模量和阻尼比影响试验研究 [J]. 岩土工程学报 , 2017 , 39 ( Sup1 ): 48 - 52 .

BI S , CHEN G X , ZHOU Z L , et al . Experimental study on influences of fines content and consolidation stress on shear modulus and damping ratio of saturated sand [J]. Chinese Journal of Geotechnical Engineering , 2017 , 39 ( Sup1 ): 48 - 52 . (in Chinese)

PAYAN M , et al . Effect of particle shape and validity of Gmax models for sand: A critical review and a new expression [J]. Computers and Geotechnics , 2016 , 72 : 28 - 41 .

SENETAKIS K , ANASTASIADIS A , PITILAKIS K . The small-strain shear modulus and damping ratio of quartz and volcanic sands [J]. Geotechnical Testing Journal , 2012 , 35 ( 6 ): 20120073 .

梁珂 , 何杨 , 陈国兴 . 南沙珊瑚砂的动剪切模量和阻尼比特性试验研究 [J]. 岩土力学 , 2020 , 41 ( 1 ): 23 - 31, 38 .

LIANG K , HE Y , CHEN G X . Experimental study of dynamic shear modulus and damping ratio characteristics of coral sand from Nansha Islands [J]. Rock and Soil Mechanics , 2020 , 41 ( 1 ): 23 - 31, 38 . (in Chinese)

HA GIANG P H , VAN IMPE P O , VAN IMPE W F , et al . Small-strain shear modulus of calcareous sand and its dependence on particle characteristics and gradation [J]. Soil Dynamics and Earthquake Engineering , 2017 , 100 : 371 - 379 .

MORSY A M , SALEM M A , ELMAMLOUK H H . Evaluation of dynamic properties of calcareous sands in Egypt at small and medium shear strain ranges [J]. Soil Dynamics and Earthquake Engineering , 2019 , 116 : 692 - 708 .

CHO G C , DODDS J , SANTAMARINA J C . Particle shape effects on packing density, stiffness, and strength: natural and crushed sands [J]. Journal of Geotechnical and Geoenvironmental Engineering , 2006 , 132 ( 5 ): 591 - 602 .

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 , 2019 , 145 ( 7 ): 04019022 .

SENETAKIS K , ANASTASIADIS A , PITILAKIS K . Normalized shear modulus reduction and damping ratio curves of quartz sand and rhyolitic crushed rock [J]. Soils and Foundations , 2013 , 53 ( 6 ): 879 - 893 .

CATANO J , PANDO M A . Static and dynamic properties of a calcareous sand from southwest Puerto Rico [C]// GeoFlorida 2010 . February 20-24, 2010 , Orlando, Florida, USA . Reston, VA, USA : American Society of Civil Engineers , 2010 : 842 - 851 .

WANG Y . Dynamic properties of fine liquefiable sand and calcareous sand from resonant column testing [D]. Austin : The University of Texas , 2003 .

YILMAZ Y , MOLLAMAHMUTOGLU M . Characterization of liquefaction susceptibility of sands by means of extreme void ratios and/or void ratio range [J]. Journal of Geotechnical and Geoenvironmental Engineering , 2009 , 135 ( 12 ): 1986 - 1990 .

CHEN G X , WU Q , SUN T , et al . Cyclic behaviors of saturated sand-gravel mixtures under undrained cyclic triaxial loading [J]. Journal of Earthquake Engineering , 2021 , 25 ( 4 ): 756 - 789 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Shear and particle breakage properties of gap-graded coral sands

Discrete element analysis of MICP solidified coral sand with different cementation degrees under unconfined compression test

Model tests study on mechanical mechanism of drainage rigid pile in coral sand foundation under horizontal cyclic loading

Related Author

WU Yang

WU Yihang

HUANG Yizheng

ZENG Run

LIAO Jingrong

LI Neng

XU Gangmin

Fenghui HU

Related Institution

School of Civil Engineering, Guangzhou University

Institute for Smart City of Chongqing University in Liyang, Liyang

Sichuan Highway Planning, Survey, Design and Research Institute Ltd.

School of Civil Engineering, Chongqing University

AI问答

Address：Journals Department, Chongqing University, 174 Shazhengjie, Chongqing 400044, P.R.China Postal code：400044
Tel：+86-23-65111322 Email：xuebao@cqu.edu.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰