不同频率循环荷载下公路路基粗粒填料长期动力特性试验研究

doi:10.13722/j.cnki.jrme.2016.0947

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (676 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The frequencies of traffic loading vary with various factors such as traffic speed. Currently there is no unified understanding in the load frequency effects on the long-term behavior of road base under the cyclic traffic loading. In order to investigate the effects of loading frequency，a series of large-scale cyclic triaxial tests on the Unbound Granular Materials(UGMs) under saturated drained condition were conducted with GDS large-scale cyclic triaxial apparatus(LDCTTS). The influence of loading frequency on the long-term performance of UGMs was investigated systematically under various stress paths. The experimental results showed that the loadings with higher frequency resulted in a larger accumulated volume contraction during the stage of densification，and consequently the UGMs reached a higher rebounding modulus. The accumulated axial strain of UGMs was also different under the loadings with different frequencies. At the stage of densification of UGMs，the loadings with the higher frequency led to higher accumulated axial strain when the cyclic stress ratios were high(ζ = 3，5)，while the loading frequency effect was minimized when the cyclic stress ratio was low(ζ = 1). After the UGMs reached the stable deformation stage，the loading frequency had almost no influence on the accumulated axial strain. This study has revealed the dynamic behavior of UGMs under the cyclic loading with different frequencies. It is found that the effects of loading frequency on the long-term performance of road base can be greatly reduced by controlling the cyclic stress ratio in the UGMs to a low level. This study can be served as reference for the accurate prediction and control of road post-construction settlement.

Key words： soil mechanics coarse material loading frequency large-scale triaxial test resilient modulus accumulated strain

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	CAI Yuanqiang1
	ZHAO Li1
	CAO Zhigang1
	GU Chuan2
	3

Cite this article:

CAI Yuanqiang1,ZHAO Li1,CAO Zhigang1, et al. Experimental study on dynamic characteristics of unbound granular materials under cyclic loading with different frequencies[J]. , 2017, 36(5): 1238-1246.

URL:

http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2016.0947 OR http://www.rockmech.org/EN/Y2017/V36/I5/1238

[5]	HICKS R G. Factors influencing the resilient properties of granular materials[Ph. D. Thesis][D]. Berkeley，CA：University of California，Berkeley，1970.
[12]	SUN Q D，INDRARATNA B，NIMBALKAR S. Effect of cyclic loading frequency on the permanent deformation and degradation of railway ballast[J]. Geotechnique，2014，64(9)：746-751.
[2]	谢婉丽，王家鼎，张林洪. 土石粗粒料的强度和变形特性的试验研究[J]. 岩石力学与工程学报，2005，24(3)：430-437.(XIE Wanli，WANG Jiading，ZHANG Linhong. Testing study on characteristics of strength and deformation for coarse materials[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(3)：430-437.(in Chinese))
[7]	INDRARATNA B，BIABANI M，NIMBALKAR S. Behavior of geocell-reiforced subballast subjected to cyclic loading in plane- strain condition[J]. Journal of Geotechnical and Geoenvironmental Engineering，2015，141(1)：04014081-1-04014081-16.
[14]	冷伍明，周文权，聂如松，等. 重载铁路粗粒土填料动力特性及累积变形分析[J]. 岩土力学，2016，37(3)：563-566.(LENG Wuming，ZHOU Wenquan，NIE Rusong，et al. Analysis of dynamic characteristics and accumulative deformation of coarse-grained soil filling of heave-haul railway[J]. Rock and Soil Mechanics，2016，37(3)：563-566.(in Chinese))
[1]	刘萌成，高玉峰，刘汉龙，等. 堆石料变形与强度特性的大型三轴试验研究[J]. 岩石力学与工程学报，2003，22(7)：1 104-1 111. (LIU Mengcheng，GAO Yufeng，LIU Hanlong，et al. Large-scale triaxial test study on deformation and strength characteristics of rockfill materials[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(7)：1 104-1 111.(in Chinese))
[3]	周文权，冷伍明，刘文劼，等. 低围压循环荷载作用下饱和粗粒土的动力特性与骨干曲线模型研究[J]. 岩土力学，2016，37(2)：415-422.(ZHOU Wenquan，LENG Wuming，LIU Wenjie，et al. Dynamic behavior and backbone curve model of saturated coarse-grained soil under cyclic loading and low confining pressure[J]. Rock and Soil Mechanics，2016，37(2)：415-422.(in Chinese))
[4]	LACKENBY J，INDRARATNA B，MCDOWELL G，et al. Effect of confining pressure on ballast degradation and deformation under cyclic triaxial loading[J]. Geotechnique，2007，57(6)：527-536.
[9]	AASHTO. Guide for mechanistic-empirical design of new and rehabilitated pavement structures final report[R]. Washington D C：National Cooperative Highway Research Program，2008.
[11]	INDRARATNA B， YHAKUR P K， VINOD J S. Experimental and numerical study of railway ballast behavior under cyclic loading[J]. International Journal of Geomechanics，2010，10(4)：136-144.
[13]	WICHTMANN T，RONDON H A，NIEMUNIS A，et al. Prediction of permanent deformations in pavements using a high-cycle accumulation model[J]. Journal of Geotechnical and Geoenvironmental Engineering，2010，136(5)：728-740.
[15]	LEKARP F，ISACSSON U，AND DAWSON A. State of the Art. I：Resilient response of unbound aggregates[J]. Journal of Transportation Engineering，2000，126(1)：66-75.
[10]	SHENTON M J. In railroad track mechanics and technology[M]. Princeton：Princeton University，1975：387-404.
[22]	中华人民共和国行业标准编写组. SL237—1999土工试验规程[S]. 北京：中国水利水电出版社，1999.(The Professional Standards Compilation Group of the People?s Republic of China. SL237—1999 Specification of soil test[S]. Beijing：China Water and Power Press，1999.(in Chinese))
[24]	WERKMEISTER S，DAWSON A R，WELLNER F. Pavement design moder for unbound granular materials[J]. Journal of Transportation Engineering，2004，130(5)：665-675.
[6]	THAKUR P K，VINOD J S，INDRARATNA B. Effect of confining pressure and frequency on the deformation of ballast[J]. Geotechnique，2013，63(9)：786-790.
[18]	曹志刚，蔡袁强，徐长节. 移动车辆荷载作用下路面的动力响应[J]. 浙江大学学报：工学版，2009，23(4)：777-781.(CAO Zhigang，CAI Yuanqiang，XU Changjie. Dynamic response of pavement subjected to moving traffic load[J]. Journal of Zhejiang University：Engineering Science，2009，23(4)：777-781.(in Chinese))
[8]	SUN Q D，INDRARATNA B，NIMBALKAR S. Deformation and degradation mechanisms of railway ballast under high frequency cyclic loading[J]. Journal of Geotechnical and Geoenvironmental Engineering，2016，142(1)：04015056-1-04015056-12.
[16]	CHAZALLON C，HORNYCH P，MOUHOUBI S. Elastoplastic model for the long-term behavior modeling of unbound granular materials in flexible pavement[J]. International Journal of Geomechanics，2006，6(4)：279-289.
[17]	CAI Y Q，CHEN Y，CAO Z G. Dynamic responses of a saturated poroleastic half-space generated by moving truck on the uneven pavement[J]. Soil Dynamics and Earthquake Engineering，2015，69(1)：172-181.
[19]	LU Z，YAO H L，WU W P，et al. Dynamic stress and deformation of a layered road structure under vehicle traffic loads：experimental measurements and numerical calculations[J]. Soil Dynamics and Earthquake Engineering，2012，39(1)：100-112.
[21]	RONDON H A，WICHTMANN T，TRIANTAFYLLIDIS T，et al. Comparison of cyclic triaxial behavior of unbound granular material under constant and variable confining pressure[J]. Journal of Transportation Engineering，2009，135(7)：467-478.
[23]	李翀，何昌荣，王琛，等. 粗粒料大型三轴试验的尺寸效应研究[J]. 岩土力学，2008，29(增1)：563-566.(LI Chong，HE Changrong，WANG Chen，et al. Study of scale effect of large-scale trixial test of coarse-grained meterials[J]. Rock and Soil Mechanics，2008，29(Supp.1)：563-566.(in Chinese))
[20]	WICHTMANN T，NIEMUNIS A，TRIANTAFYLLIDIS T. Strain accumulation in sand due to cyclic loading：drained triaxial tests[J]. Soil Dynamics and Earthquake Engineering，2005，25(12)：967-979.