Compactness automatic detecting method of subgrade for intelligent impact roller

ZHANG Hong-chun; DAI Jing-liang; LI Xiao-zhong

Volume 7 Issue 5

Turn off MathJax

Article Contents

Article Navigation > Journal of Traffic and Transportation Engineering > 2007 > 7(5): 63-67

Next Previous

ZHANG Hong-chun, DAI Jing-liang, LI Xiao-zhong. Compactness automatic detecting method of subgrade for intelligent impact roller[J]. Journal of Traffic and Transportation Engineering, 2007, 7(5): 63-67.

Citation:

ZHANG Hong-chun, DAI Jing-liang, LI Xiao-zhong. Compactness automatic detecting method of subgrade for intelligent impact roller[J]. Journal of Traffic and Transportation Engineering, 2007, 7(5): 63-67.

Citation:

PDF( 283 KB)

Compactness automatic detecting method of subgrade for intelligent impact roller

1.
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
2.
Henan Puan Expressway Co.Ltd., Puyang 457000, Henan, China

More Information

Author Bio:
Zhang Hong-chun(1968-), male, doctoral student of engineering, +86-371-67718613, zhang-hcxx@126.com

Dai Jing-liang(1940-), male, professor, +86-29-82335137, jldai@126.com
Received Date: 2007-03-16
Publish Date: 2007-10-25

Abstract

Abstract

In order to improve the compactness detecting accuracy of subgrade, Rayleigh wave method was put forward to detect the degree of compaction of subgrade.Rayleigh wave was brought by using dropping hammer, its signal was detected by using detector, and recorded by using earthquake instrument.Processed Rayleigh wave was extracted by using τ-p transform, and its dispersion curve was obtained.The shear velocity of subgrade was invertely computed according to Rayleigh wave, the degree of compaction was computed according to the velocity, its profile diagram was analyzed, and it was detected by using Rayleigh wave method and pouring sand method, and the detecting results were compared.Comparison result shows that the compactness curves almost lap, the maximal absolute error is-0.300%, the maximal relative error is 0.308%, which indicates that the detecting result is credible, and the method is feasible to control impact rolling construction.
- road engineering,
- intelligent impact roller,
- Rayleigh wave,
- compactness automatic detecting method,
- inversion algorithm

FullText(HTML)

References(12)

References

[1]	Shi Gang, Zhi Xi-lan, Xie Yong-li. Effect analysis of percussive compaction and dynamic compaction on roadbed reinforcement[J]. Journal of Traffic and Transportation Engineering, 2006, 6(4): 52-53. (in Chinese) doi: 10.3321/j.issn:1671-1637.2006.04.012
[2]	Jing Hong-jun, Zhang Bin. Experi ments of highway subgradei mpact compaction in loess region[J]. Journal of Chang'an University: Natural Science Edition, 2004, 24(1): 25-29. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200401007.htm
[3]	杨成林. 瑞雷波勘探[M]. 北京: 地质出版社, 1993.
[4]	Zhang Jian-qing. Research on the new exploration technique of multiwave for shallow earthquake[J]. Geotechnical Investigation and Surveying, 2001, 29(6): 65-68. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GCKC200106019.htm
[5]	Wang Fei-rong. Using Rayleigh wave to test the effect of soft-soil foundationin heavy compacting[J]. Jiangxi Coal Science and Technology, 2002, 24(4): 22-23. (in Chinese) doi: 10.3969/j.issn.1006-2572.2002.04.010
[6]	Gu Han-ming, Song Xian-hai, Liu Jiang-ping, et al. Evalution of the effect of compaction highway surface using shear velocity inversed by instantaneous Rayleigh wave[J]. Geo-logical Scince and Technology Information, 2001, 20(2): 100-102. (in Chinese) doi: 10.3969/j.issn.1000-7849.2001.02.023
[7]	Xia J, Miller R D, Park C B. Multichannel analysis of surface waves to map bedrock[J]. The Leading Edge, 1999, 18(12): 1 392-1 396.
[8]	王家映. 地球物理反演理论[M]. 武汉: 中国地质大学出版社, 1998.
[9]	Yang Cheng-lin, Shi Fu-rong, Li Cong-xin, et al. The application of Rayleigh wave and some other methods to non-destructive inspection of highway quality[J]. Geophysical and Geochemical Exploration, 1996, 20(2): 104-115. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-WTYH602.003.htm
[10]	徐仲达. 地震波理论[M]. 上海: 同济大学出版社, 1997.
[11]	Li Xiu-zhong. Method of transient Rayleigh wave applied in investigation of expressway roadbed[J]. Highway, 2005, 50(2): 135-138. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLGL20050200Z.htm
[12]	Zhang Yi-luo, Zheng Nan-xiang, Gu Bing-qi. Compactness rapid measurement method on middle coarse grained soil subgrade[J]. China Journal of Highway and Transport, 2006, 19(5): 29-33. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL200605006.htm