|Table of Contents|

Dynamic characteristics of gravel soil low embankment in Xinjiang(PDF)

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

Issue:
2019年03期
Page:
1-9
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Dynamic characteristics of gravel soil low embankment in Xinjiang
Author(s):
YANG Xiao-hua1;  WAN Qi1;  LIU Da-peng1; 2;  BAO Han1
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Construction Management, Jiangsu Vocational Institute of Architectural Technology, Xuzhou 221116, Jiangsu, China)
Keywords:
road engineering;  low embankment;  model test;  dynamic characteristic;  stress;  strain
PACS:
U416.12
DOI:
-
Abstract:
Based on the Sanchakou-Shache Expressway in Xinjiang, the subgrade model test with 1:1 ratio was carried out within the influence range of one wheel for the standard axle load, and the dynamic characteristics of low embankment were studied under vehicle load. The different moisture content states of the subsoil in service in the oasis area were considered,the low embankment road structure was divided into four parts, including pavement, base, subgrade, and subsoil according to the general road design standards, the dynamic characteristics of low embankment under different loads were simulated, and the effects of peak values, frequencies and repetition times of dynamic loads on the dynamic characteristics were studied. Research result indicates that the vertical stresses under different loading cases decrease rapidly with the increase of subgrade depth, and attenuate by 69.2% at the depth of 0.8 m. The stresses at different depths vary linearly with the static and short-term dynamic load, while the strains show a nonlinear trend. Due to the modulus difference of different soil layers, the strains appear obvious stratification in the subgrade and subsoil. The change of water content of the subsoil has obvious influence on the dynamic characteristics of low embankment, and the strain at the top of the subsoil increases by 1.8 times when the water content increases from 18% to 28%.The increase of short-term dynamic load frequency has little effect on the stress and strain, and they decrease by 7% and 9%, respectively when the frequency increases from 1 Hz to 5 Hz at the tops of the subgrade and subsoil.When the peak values of static load, short-term dynamic load and long-term dynamic load are 50 kN at the tops of the subgrade and subsoil, the stress and strain under the short-term dynamic load are 79%-95% and 75%-95% of the values under the static load, respectively, while the stress and strain caused by the long-term dynamic load are 1.02-1.11 and 1.9-3.3 times of the values under the static load, respectively. 2 tabs, 12 figs, 29 refs.

References:

[1] 王 帅.新疆绿洲荒漠地区干线公路路堤高度影响因素分析[D].西安:长安大学,2013.
WANG Shuai. Analysis on embankment height influencing factors of arterial road in desert-oasis region of Xinjiang[D]. Xi'an: Chang'an University, 2013.(in Chinese)
[2] CUI Xin-zhuang, ZHANG Na, LI Shu-cai, et al. Effects of embankment height and vehicle loads on traffic-load-induced cumulative settlement of soft clay subsoil[J]. Arabian Journal of Geosciences, 2015, 8(5): 2487-2496.
[3] CHEN Tuo, MA Wei, WU Zhi-jian, et al. Characteristics of dynamic response of the active layer beneath embankment in permafrost regions along the Qinghai-Tibet Railroad[J]. Cold Regions Science and Technology, 2014, 98: 1-7.
[4] ZHANG Wen-tai, ZHOU Jian-qin, FENG Guang-long, et al. Characteristics of water erosion and conservation practice in arid regions of Central Asia: Xinjiang, China as an example[J]. International Soil and Water Conservation Research, 2015, 3(2): 97-111.
[5] TANG Lian-sheng, CHEN Hao-kun, SANG Hai-tao, et al. Determination of traffic-load-influenced depths in clayey subsoil based on the shakedown concept[J]. Soil Dynamics and Earthquake Engineering, 2015, 77: 182-191.
[6] XUE Jie, GUI Dong-wei, ZHAO Ying, et al. Quantification of environmental flow requirements to support ecosystem services of oasis areas: a case study in Tarim Basin, Northwest China[J]. Water, 2015, 7(10): 5657-5675.
[7] LI Guo-wei, NGUYEN T N, AMENUVOR A C. Settlement prediction of surcharge preloaded low embankment on soft ground subjected to cyclic loading[J]. Marine Georesources and Geotechnology, 2016, 34(2): 154-161.
[8] CUI Xin-zhuang, ZHANG Na, ZHANG Jiong, et al. In situ tests simulating traffic-load-induced settlement of alluvial silt subsoil[J]. Soil Dynamics and Earthquake Engineering, 2014, 58: 10-20.
[9] 查文华,洪宝宁.交通荷载下低路堤路基的动力响应[J].江苏大学学报(自然科学版),2008,29(3):264-268.
ZHA Wen-hua, HONG Bao-ning. Dynamic response on roadbed of low embankment under vehicle loadings[J]. Journal of Jiangsu University(Natural Science Edition), 2008, 29(3): 264-268.(in Chinese)
[10] SAKAI A, SAMANG L, MIURA N. Partially-drained cyclic behavior and its application to the settlement of a low embankment road onsilty-clay[J]. Journal of the Japanese Geotechnical Society, 2003, 43(1): 33-46.
[11] TANG Yi-qun, CUI Zhen-dong, ZHANG Xi, et al. Dynamic response and pore pressure model of the saturated soft clay around the tunnel under vibration loading of Shanghai subway[J]. Engineering Geology, 2008, 98(3/4): 126-132.
[12] KIM S M. Influence of horizontal resistance at plate bottom on vibration of plates on elastic foundation under moving loads[J]. Engineering Structures, 2004, 26(4): 519-529.
[13] SINGH A K, PAL M K, NEGI A, et al. Analytical study on dynamic response due to a moving load on distinctly characterized orthotropic half-spaces under different physical conditions with comparative approach[J]. Arabian Journal for Science and Engineering, 2019, 44(5): 4863-4883.
[14] LEFEUVE-MESGOUEZ G, LEHOUÉDEC D, PEPLOW A T. Ground vibration in the vicinity of a high-speed moving harmonic strip load[J]. Journal of Sound and Vibration, 2000, 231(5): 1289-1309.
[15] LEFEUVE-MESGOUEZ G, MESGOUEZ A. Ground vibration due to a high-speed moving harmonic rectangular load on aporoviscoelastic half-space[J]. International Journal of Solids and Structures, 2008, 45(11/12): 3353-3374.
[16] SIDDHARTHAN R, ZAFIR Z, NORRIS G M. Moving load response of layered soil. I: formulation[J]. Journal of Engineering Mechanics, 1993, 119(10): 2052-2071.
[17] GUNARATNE M, SANDERS O. Response of a layered elastic medium to a moving strip load[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1996, 20(3): 191-208.
[18] 徐 鹏,蒋关鲁,任世杰,等.红层泥岩及其改良填料路基动力响应试验研究[J].岩土力学,2019,40(2):678-683,692.
XU Peng, JIANG Guan-lu, REN Shi-jie, et al. Experimental study of dynamic response of subgrade with red mudstone and improved red mudstone[J]. Rock and Soil Mechanics, 2019, 40(2): 678-683, 692.(in Chinese)
[19] 陈乐求,陈俊桦,张家生.水泥改良泥质板岩土路基模型动力响应试验[J].中南大学学报(自然科学版),2017,48(8):2203-2209.
CHEN Le-qiu, CHEN Jun-hua, ZHANG Jia-sheng. Experiments on dynamic response of cement-improved argillaceous-slate subgrade model[J]. Journal of Central South University(Science and Technology), 2017, 48(8): 2203-2209.
[20] 陈乐求,张家生,陈俊桦,等.水泥改良泥质板岩粗粒土的静动力特性试验[J].岩土力学,2017,38(7):1903-1910.
CHEN Le-qiu, ZHANG Jia-sheng, CHEN Jun-hua, et al. Testing of static and dynamic strength properties of cement-improved argillaceous-slate coarse-grained soil[J]. Rock and Soil Mechanics, 2017, 38(7): 1903-1910.(in Chinese)
[21] 魏 静,魏 平,杨松林,等.列车荷载下的桩网结构低路基土拱效应[J].交通运输工程学报,2015,15(6):35-44.
WEI Jing, WEI Ping, YANG Song-lin, et al. Soil arching effect of low subgrade with pile-net structure under train load[J]. Journal of Traffic and Transportation Engineering, 2015, 15(6): 35-44.(in Chinese)
[22] 陈靖宇,蔡袁强,曹志刚,等.非饱和公路路基填料长期动力特性试验研究[J].岩石力学与工程学报,2018,37(10):2406-2414.
CHEN Jing-yu, CAI Yuan-qiang, CAO Zhi-gang, et al. Experimental research on long-term dynamic characteristics of unsaturated road base and subbase mixtures[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(10): 2406-2414.(in Chinese)
[23] 陈善雄,宋瑞军,余 飞,等.降雨入渗对路基动力响应的变化规律研究[J].岩石力学与工程学报,2017,36(增2): 4212-4219.
CHEN Shan-xiong,SONG Rui-jun,YU Fei, et al. The change rules of dynamic response on subgrade under the rainfall infiltration[J]. Journal of Rock Mechanics and Engineering, 2017, 36(S2): 4212-4219.(in Chinese)
[24] 杨果林,段君义,杨 啸,等.降雨与自然状态下膨胀土基床的振动特性[J].浙江大学学报(工学版),2016,50(12):2319-2327.
YANG Guo-lin, DUAN Jun-yi, YANG Xiao, et al. Vibration characteristics of subgrade in expansive soil area under simulated rainfall and natural conditions[J]. Journal of Zhejiang University(Engineering Science), 2016, 50(12): 2319-2327.(in Chinese)
[25] 梅慧浩,冷伍明,刘文劼,等.持续动荷载作用下基床粗粒土填料累积塑性应变试验研究[J].铁道学报,2017,39(2):119-126.
MEI Hui-hao, LENG Wu-ming, LIU Wen-jie, et al. Experimental study on accumulated plastic strain of coarse grained soil filling in subgrade bed under persistent dynamic loading[J]. Journal of the China Railway Society, 2017, 39(2): 119-126.(in Chinese)
[26] 尹 松,孔令伟,杨爱武,等.循环振动作用下残积土动力变形特性试验研究[J].振动与冲击,2017,36(11):224-231.
YIN Song, KONG Ling-wei, YANG Ai-wu, et al. Tests for dynamic deformation characteristics of residual soil under cyclic loading[J]. Journal of Vibration and Shock, 2017, 36(11): 224-231.(in Chinese)
[27] CHAI Jin-chun, MIURA N. Traffic-load-induced permanent deformation of road on soft subsoil[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2002, 128(11): 907-916.
[28] 张 浩,杨 玲,郭院成.交通荷载作用下低填道路软土地基的动力响应分析[J].郑州大学学报(工学版),2017,38(1):11-15.
ZHANG Hao, YANG Ling, GUO Yuan-cheng. Analysis of dynamic response of soft soil foundation beneath low embankment under traffic load[J]. Journal of Zhengzhou University(Engineering Science), 2017, 38(1): 11-15.(in Chinese)
[29] LI Jun, TANG Yi-qun, YANG Ping, et al. Dynamic properties of freezing-thawing muddy clay surrounding subway tunnel in Shanghai[J]. Environmental Earth Sciences, 2015, 74(6): 5341-5349.

Memo

Memo:
-
Last Update: 2019-06-27