|Table of Contents|

Dynamic properties of fused silica sand based on dynamic triaxial test(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2020年02期
Page:
46-54
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Dynamic properties of fused silica sand based on dynamic triaxial test
Author(s):
WEI Ping1; 2;  BAO Ning2;  WEI Jing2;  CHEN Jian-feng3
(1. School of Engineering and Surveying, Beijing Polytechnic College, Beijing 100042, China; 2. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 3. College of Civil Engineering,Tongji University, Shanghai 200092, China)
Keywords:
road material;  fused silica sand;  dynamic triaxial test;  cumulative axial strain;  dynamic pore pressure;  dynamic elastic modulus
PACS:
U414
DOI:
10.19818/j.cnki.1671-1637.2020.02.004
Abstract:
To investigate the dynamic deformation and strength of fused silica sand in the process of liquefaction under vibration load, and promote the application of transparent soil technology in the dynamic characteristics visualization model test of geotechnical engineering, the dynamic triaxial tests on the saturated fused silica sand specimens with typical sizes(0.5-1.0 mm)forming the skeleton structure of transparent sand were carried out. The cumulative axial strain, development mode of dynamic pore pressure, attenuation of dynamic stress, and change rules of dynamic elastic modulus and damping ratio of fused silica sand specimens under the working conditions of different confining pressures, loading frequencies and dynamic stress ratios were studied, and the test results were compared with those of standard sand with the same gradation. Analysis result shows that the cumulative axial strain of fused silica sand changes from a stable type to a destructive type with the increase of dynamic stress ratio. The critical dynamic stress ratio is 0.150-0.175 as the loading frequency ranges from 0.5 Hz to 1.5 Hz, which is less than that of standard sand of 0.200-0.225. Increasing the confining pressure and dynamic stress ratio and decreasing the loading frequency will accelerate the accumulation of plastic strain of specimen and shorten the liquefaction failure time. With the increase of confining pressure, the development mode of pore pressure gradually changes from the Seed model to the exponential model. Increasing the dynamic stress will increase the vibration amplitude of pore pressure after the liquefaction failure. Under the same dynamic stress ratio, the dynamic stress changes of fused silica sand and standard sand are linearly correlated with the dynamic strain. When the confining pressure is greater than 200 kPa, the dynamic stress attenuation amplitude decreases with the increase of confining pressure. The relationship between dynamic elastic modulus and damping ratio is linear. The dynamic elastic modulus decreases hyperbolically with the increase of dynamic strain and increases as the confining pressure increases. The damping ratio increases first with the increase of dynamic strain and then basically stabilizes at 0.22, and its development curve is less affected by the confining pressure. 4 tabs, 10 figs, 30 refs.

References:

[1] ISKANDER M, LAI J, OAWALD C J, et al. Development of a transparent material to model the geotechnical properties of soils[J]. Geotechnical Testing Journal, 1994, 17(4): 425-433.
[2] EZZEIN F M, BATHURST R J. A new approach to evaluate soil-geosynthetic interaction using a novel pullout test apparatus and transparent granular soil[J]. Geotextiles and Geomembranes, 2014, 42(3): 246-255.
[3] XIAO Yang, YIN Feng, LIU Han-long, et al. Model tests on soil movement during the installation of piles in transparent granular soil[J]. International Journal of Geomechanics, 2017, 17(4): 06016027.
[4] 袁炳祥,吴跃东,陈 锐,等.侧向受荷桩土体内部位移场的模型试验研究[J].浙江大学学报(工学版),2016,50(10):2031-2036.
YUAN Bing-xiang, WU Yue-dong, CHEN Rui, et al. Model test on displacement field of internal soil induced by laterally loading pile[J]. Journal of Zhejiang University(Engineering Science), 2016, 50(10): 2031-2036.(in Chinese)
[5] XIANG Yu-zhou, LIU Han-long, ZHANG Wen-gang, et al. Application of transparent soil model test and DEM simulation in study of tunnel failure mechanism[J]. Tunneling and Underground Space Technology, 2018, 74: 178-184.
[6] CHEN J F, GUO X P, XUE J F, et al. Load behaviour of model strip footings on reinforced transparent soils[J]. Geosynthetics International, 2019, 26(3): 1-10.
[7] MANNHEIMER R J, OSWALD C J. Development of
transparent porous media with permeabilities and porosities comparable to soils, aquifers, and petroleum reservoirs[J]. Ground Water, 2010, 31(5): 781-788.
[8] SERRANO R F, ISKANDER M, TABE K. 3D contaminant flow imaging in transparent granular porous media[J]. Géotechnique Letters, 2011, 1(3): 71-78.
[9] 刘建军,汪 尧,宋 睿.基于透明岩土材料的可视化渗流实验及其应用前景[J].地球科学,2017,42(8):1287-1295.
LIU Jian-jun, WANG Yao, SONG Rui. Visual seepage experiment based on transparent rock-soil material and its application prospect[J]. Earth Science, 2017, 42(8): 1287-1295.(in Chinese)
[10] 金韦剑,朱 斌.基于透明土孔隙介质双渗流模型试验研究[J].四川地质学报,2020,40(1):103-106.
JIN Wei-jian, ZHU Bin. Experimental study on double seepage model based on transparent soil pore medium[J]. Acta Geologica Sichuan, 2020, 40(1): 103-106.(in Chinese)
[11] 隋旺华,高 岳,LIU Jin-yuan.透明土实验技术现状与展望[J].煤炭学报,2011,36(4):577-582.
SUI Wang-hua, GAO Yue, LIU Jin-yuan. Status and prospect of transparent soil experimental technique[J]. Journal of China Coal Society, 2011, 36(4): 577-582.(in Chinese)
[12] SADEK S, ISKANDER M, LIU Jin-yuan. Geotechnical properties of transparent silica[J]. Canadian Geotechnical Journal, 2002, 39(1): 111-124.
[13] EZZEIN F M, BATHURST R J. A transparent sand for
geotechnical laboratory modeling[J]. Geotechnical Testing Journal, 2011, 34(6): 590-601.
[14] GUZMAN I L, ISKANDER M, SUESCUN-FLOREZ E, et al. A transparent aqueous-saturated sand surrogate for use in physical modeling [J]. Acta Geotechnica, 2014, 9(2): 187-206.
[15] 孔纲强,李 辉,王忠涛,等.透明砂土与天然砂土动力特性对比[J].岩土力学,2018,39(6):1935-1940,1947.
KONG Gang-qiang, LI Hui, WANG Zhong-tao, et al. Comparison of dynamic properties between transparent sand and natural sand[J]. Rock and Soil Mechanics, 2018, 39(6): 1935-1940, 1947.(in Chinese)
[16] XIAO Yang, SUN Yi-fei, YIN Feng, et al. Constitutive
modeling for transparent granular soils[J]. International Journal of Geomechanics, 2017, 17(7): 04016150.
[17] ZHANG Zhen, TAO Feng-juan, YE Guan-bao, et al. Physical models to investigate soil arching phenomena under cyclic footing loading using transparent soil[C]∥Springer. Proceedings of GeoShanghai 2018 International Conference: Fundamentals of Soil Behaviours. Berlin: Springer, 2018: 792-801.
[18] GUZMAN I L, ISKANDER M, BLESS S. Observations of projectile penetration into a transparent soil[J]. Mechanics Research Communications, 2015, 70: 4-11.
[19] KONG Gang-qiang, ZHOU Li-duo, WANG Zhong-tao, et al. Shear modulus and damping ratios of transparent soil manufactured by fused quartz[J]. Materials Letters, 2016, 182: 257-259.
[20] KONG Gang-qiang, LI Hui, YANG Gui, et al. Investigation on shear modulus and damping ratio of transparent soils with different pore fluids[J]. Granular Matter, 2018, 20(1): 1-8.
[21] KONG Gang-qiang, LI Hui, YANG Qing, et al. Cyclic
undrained behavior and liquefaction resistance of transparent sand manufactured by fused quartz[J]. Soil Dynamics and Earthquake Engineering, 2018, 108: 13-17.
[22] 张 强.Y形桩竖向承载特性的透明土模型试验研究[D].淮南:安徽理工大学,2016.
ZHANG Qiang. The research of transparent soil model experimental about vertical load-bearing characteristics of Y-section pile[D]. Huainan: Anhui University of Science and Technology, 2016.(in Chinese)
[23] 丁选明,黄宇航,瞿立明,等.桩承式路堤土拱效应透明土模型试验研究[J].科学技术与工程,2016,16(28):110-114.
DING Xuan-ming, HUANG Yu-hang, QU Li-ming, et al. Experimental investigation on soil arching in piled embankments based on transparent soil model[J]. Science Technology and Engineering, 2016, 16(28): 110-114.(in Chinese)
[24] 曹兆虎,孔纲强,文 磊,等.楔形管桩沉桩及桩端后注浆可视化模型试验[J].铁道科学与工程学报,2017,14(5): 922-927.
CAO Zhao-hu, KONG Gang-qiang, WEN Lei, et al. Visualization model test on tapered pipe pile installation and pile tip grouting process[J]. Journal of Railway Science and Engineering, 2017, 14(5): 922-927.(in Chinese)
[25] 周 航,袁井荣,刘汉龙,等.矩形桩沉桩挤土效应透明土模型试验研究[J].岩土力学,2019,40(11):4429-4438.
ZHOU Hang, YUAN Jing-rong, LIU Han-long, et al. Model test of rectangular pile penetration effect in transparent soil[J]. Rock and Soil Mechanics, 2019, 40(11): 4429-4438.(in Chinese)
[26] 黄 博,丁 浩,陈云敏.高速列车荷载作用的动三轴试验模拟[J].岩土工程学报,2011,33(2):195-202.
HUANG Bo, DING Hao, CHEN Yun-min. Simulation of high-speed train load by dynamic triaxial tests[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(2): 195-202.(in Chinese)
[27] SEEDH B, TOKIMATSU K, HARDER L F, et al. Influence of SPT procedures in soil liquefaction resistance evaluations[J]. Journal of Geotechnical Engineering, 1985, 111(12): 1425-1445.
[28] 曾长女,刘汉龙,周云东.饱和粉土粉粒含量影响的动孔压发展规律试验研究[J].防灾减灾工程学报,2006,26(2):180-184.
ZENG Chang-nyu, LIU Han-long, ZHOU Yun-dong. Experimental study on influence of silt particle content on pore water pressure mode of saturated silt[J]. Journal of Disaster Prevention and Mitigation Engineering, 2006, 26(2): 180-184.(in Chinese)
[29] HARDIN B O, DRNEVICH V P. Shear modulus and damping in soils: design equations and curves[J]. Journal of Soil Mechanics and Foundations Division, 1972, 98(7): 667-692.
[30] 孙 静,袁晓铭.土的动模量和阻尼比研究述评[J].世界地震工程,2003,19(1):88-95.
SUN Jing, YUAN Xiao-ming. A state-of-art of research on dynamic modulus and damping ratio of soils[J]. World Earthquake Engineering, 2003, 19(1): 88-95.(in Chinese)

Memo

Memo:
-
Last Update: 2020-05-22