Tests for interlayer dynamic stress response of a two-layer roadbed under vehicle load

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (5) : 30-36.

CAO Haiying， ZHU Yi,LIU Yunfei,WEI Yueyan

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Abstract

Aiming at dynamic response and stability evaluation problems of layered subgrade,based on an actual two-layer roadbed project,the phenomenon of dynamic stress mutation at hard-soft soil layers’ interface was revealed with field measurement data,and a coefficient of dynamic stress mutation (CDSM)was obtained.According to the data of laboratory model tests,the main factors affecting CDSM were ranked with the range analysis method.In virtue of hard and soft soils’ critical dynamic stress obtained with the dynamic triaxial tests,the relevance coefficient between two soils’ dynamic stress levels was deduced,and a “probability area”method was proposed to evaluate the long-term subgrade stability.The results showed that the ratio between two soils’ compression moduli is the primary factor affecting inter-layer dynamic stress response in stead of the thickness of hard crust layer,and the soft soil layer embedded at deeper location is the key layer to control subgrade stability.

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two-layer roadbed / dynamic stress mutation / laboratory model test / layer interface / subgrade stability

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CAO Haiying， ZHU Yi,LIU Yunfei,WEI Yueyan. Tests for interlayer dynamic stress response of a two-layer roadbed under vehicle load[J]. Journal of Vibration and Shock, 2017, 36(5): 30-36

References

[1] 赵健，李振存，郭昕，等. 汽车荷载作用下沥青路面公路动力响应数值模拟[J]. 铁道科学与工程学报，2012, 9(5):83-89.
ZHAO Jian, LI Zhen-cun, GUO Xin, et al. Numerical analysis of bitumen-surface highway dynamic response under vehicle loads[J]. Journal of railway science and engineering, 2012, 9(5):83-89.
[2] AUERSCH L. The effect of critically moving loads on the vibrations of soft soils and isolated railway tracks[J]. Journal of sound and vibration, 2008, 3l(3):587-607.
[3] 张幸幸，张建民，温彦锋. 长期交通荷载作用下路基沉降的实用计算方法[J]. 岩土工程学报，2015, 37(11):2067-2072.
ZHANG Xing-xing, ZHANG Jian-min, WEN Yan-feng. Practical method to predict settlement of subgrade induced by long-term traffic loads[J]. Chinese journal of geotechnical engineering, 2015, 37(11):2067-2072.
[4] 石峰，刘建坤，房建宏，等. 季节性冻土地区公路路基动应力测试[J]. 中国公路学报，2013, 26(5):15-20.
SHI Feng, LIU Jian-kun, FANG Jian-hong, et al. Subgrade dynamic stress test on highway in seasonal frozen soil area[J]. China journal of highway and transport, 2013, 26(5):15-20.
[5] Antonio M. Recuero, Ulysses Contreras, Mohil Patel, et al. ANCF continuum-based soil plasticity for wheeled vehicle off-road mobility[J]. Journal of computational and nonlinear dynamics,2016,11(4):1-5.
[6] 梅英宝，朱向荣，吕凡任. 交通荷载作用下道路与软土地基弹塑性变形分析[J]. 浙江大学学报：工学版，2005, 39(7):997-1002.
MEI Ying-bao, ZHU Xiang-rong, LV Fan-ren. Elasto-plastic deformation analysis of pavement and soft subsoil under traffic load[J]. Journal of zhejiang university ( Engineering Science) , 2005, 39(7):997-1002.
[7] 刘伟，汤连生，张庆华. 车辆动载下路基土竖向动应力及扩散规律[J]. 重庆交通大学学报：自然科学版，2012, 31(4):799-802.
Liu Wei, Tang Lian-sheng, Zhang Qing-hua. Research on dynamic stress of subgrade soil under vehicle loads and its diffused rule [J]. Journal of chongqing jiaotong university( Natural science) , 2012, 31(4):799-802.
[8] 赵俊明，刘松玉，石名磊，等. 交通荷载作用下低路堤动力特性试验研究[J].东南大学学报：自然科学版，2007, 37(5):921-925.
Zhao Jun-ming, Liu Song-yu, Shi Ming-lei, et al. Experimental study on dynamic response of low embankment under traffic load[J]. Journal of southeast university (Natural science edition) , 2007, 37(5):921-925.
[9] 路军富，刘立，王明年，等. 多荷载作用下层状土路基的力学特性研究[J]. 岩土力学，2010, 31(1):76-80.
LU Jun-fu, LIU Li, WANG Ming-nian, et al. Study of mechanical characteristics of layered subgrade under more loads[J]. Rock and soil mechanics, 2010, 31(1):76-80.
[10] 董城，冷伍明，李志勇，等. 重复荷载作用下粉性路基土累积塑性变形研究[J]. 岩土力学，2014, 35(12):3437-3442.
DONG Cheng, LENG Wu-ming, LI Zhi-yong, et al. Study of accumulative plastic deformation of silty subgrade soil under repeated loading[J]. Rock and soil mechanics, 2014, 35(12):3437-3442.
[11] 张其一，王青华，王琦. 上硬下软双层地基上条形基础穿刺深度研究[J]. 铁道工程学报，2011(11):36-39.
ZHANG Qi-yi, WANG Qing-hua, WANG Qi. Study on punch through depth of two-layered soil foundation under strip footing[J]. Journal of railway engineering society, 2011(11):36-39.
[12]Krystyna Kazimierowicz-Frankowska. Influence of geosynthetic reinforcement on the load-settlement characteristics of two-layer subgrade[J]. Geotextiles and geomembranes, 2007,25(6):366-376.
[13] 曹海莹，窦远明. 上硬下软型双层路基应力扩散特征及工程应用[J]. 公路交通科技，2012, 29(2):29-34.
CAO Hai-ying, DOU Yuan-ming. The characteristics of dry crust’s stress dispersion in two-layered roadbed and it’s engineering application[J]. Journal of highway and transportation research and development, 2012, 29(2):29-34.
[14] 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.
[15] 杨果岳，张家生，王晅，等. 车辆速度与载重对路面结构影响的现场试验研究[J]. 岩土力学， 2008, 29(11):3009-3103.
YANG Guo-yue, ZHANG Jia-sheng, WANG Huan, et al. Experimental research on dynamic response of road pavement under different loads and speeds of vehicles[J]. Rock and soil mechanics, 2008, 29(11):3009-3103.
[16] 何海鹰. 高速公路路基动力响应现场试验与数值分析[J]. 长沙理工大学学报：自然科学版，2012, 9(2):13-18.
HE Hai-ying. The field test and numerical analysis of expressway subgrade dynamic response [J]. Journal of changsha university of science and technology (Natural science) , 2012, 9(2):13-18.
[17] 王晅，张家生，杨果岳，等. 重载作用下公路路基及基层动应力测试研究[J]. 振动与冲击，2007, 26(6):169-173.
WANG Xuan, ZHANG Jia-sheng, YANG Guo-yue, et al. Test on dynamic stress of roadbed and pavement under heavy loads[J]. Journal of vibration and shock, 2007, 26(6):169-173.
[18] 董金玉，杨继红，杨国香，等. 基于正交设计的模型试验相似材料的配比试验研究[J]. 煤炭学报，2012, 37(1):44-49.
Dong Jin-yu, Yang Ji-hong, Yang Guo-xiang, et al. Research on similar material proportioning test of model test based on orthogonal design[J]. Journal of China coal society, 2012, 37(1):44-49.
[19] 巢万里，李绪梅，王星华. 桥隧过渡段重载车辆冲击响应分析[J]. 交通运输工程学报，2013, 13(4):22-28.
CHAO Wan-li, LI Xu-mei, WANG Xing-hua. Impact response analysis of heavy vehicle passing bridge-tunnel section [J]. Journal of traffic and transportion engineering, 2013, 13(4):22-28.
[20] 林小平，凌建明，官盛飞，等. 水泥混凝土路面路基应力水平分析[J]. 同济大学学报：自然科学版，2010, 38(4):545-551.
LIN Xiao-ping, LING Jian-ming, GUAN Shengfei, et al. Analysis on stress level of subgrade under cement concrete pavement[J]. Journal of tongji university (Natural science) , 2010, 38(4):545-551.
[21] 冷伍明，刘文劼，周文权. 振动荷载作用下重载铁路路基粗颗粒土填料临界动应力试验研究[J]. 振动与冲击，2015, 34(16):25-30.
LENG Wu-ming, LIU Wen-jie, ZHOU Wenquan. Testing research on critical cyclical stress of coarse-grained soil filling in heavy haul railway subgrade[J]. Journal of vibration and shock, 2015, 34(16):25-30.
[22] 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.