Effect analysis of percussive compaction and dynamic compaction on roadbed reinforcement

SHI Gang; ZHI Xi-lan; XIE Yong-li; LIU Yi-lin; ZHAO Guang-hai

Volume 6 Issue 4

Turn off MathJax

Article Contents

Article Navigation > Journal of Traffic and Transportation Engineering > 2006 > 6(4): 52-56

Next Previous

SHI Gang, ZHI Xi-lan, XIE Yong-li, LIU Yi-lin, ZHAO Guang-hai. Effect analysis of percussive compaction and dynamic compaction on roadbed reinforcement[J]. Journal of Traffic and Transportation Engineering, 2006, 6(4): 52-56.

Citation:

SHI Gang, ZHI Xi-lan, XIE Yong-li, LIU Yi-lin, ZHAO Guang-hai. Effect analysis of percussive compaction and dynamic compaction on roadbed reinforcement[J]. Journal of Traffic and Transportation Engineering, 2006, 6(4): 52-56.

Citation:

PDF( 392 KB)

Effect analysis of percussive compaction and dynamic compaction on roadbed reinforcement

1.
School of Science, Chang'an University, Xi'an 710064, Shaanxi, China
2.
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
3.
Research Institute of Highway of Ministry of Communications, Beijing 100088, China
4.
Civil Engineering Design Academy, Chang'an University, Xi'an 710064, Shaanxi, China

More Information

Author Bio:
Shi Gang(1972-), male, doctoral student, 86-29-82336920, shigang_xa@126.com

Xie Yong-li(1961-), male, PhD, professor, 86-29-82334932, xieyl@263.net
Received Date: 2006-04-11
Publish Date: 2006-12-25

Abstract

Abstract

The highway bases of one section in the loess area of Shaanxi province were consolidated by percussive compaction and dynamic consolidation, the physical force indexes (dry density, constrained modulus and collapsibility coefficient) in different depths and the microstructure features of the loess were analyzed by soil engineering test in laboratory and original test, the results of plate loading test, cone penetration test and compressuremeter test were compared, the intensity forming mechanism of the loess roadbed and the changes, effects and valid influence depths of foundation bearing capacity in the loess area were analysed.Analysis result shows that the valid influence depth of dynamic consolidation ranges from 1.0 to 2.0 m, and successive, even, solid reinforcement layer is formed in the range between 0 and 1.5 m; for percussive compaction, the valid reinforcing depth reaches 4.0 m, the valid influence depths varies from 5.0 to 6.0 m, and the collapsibility is eliminated effectively in reinforcing depth. (2 tabs, )
- subgrade engineering,
- loess,
- percussive compaction,
- dynamic consolidation,
- soil engineering test in laboratory,
- original test

FullText(HTML)

References(14)

References

[1]	Zhang Hong-liang, Hu Chang-shun, Liu Bao-jian, et al. Mechanical properties experiment of compacted loess-lime[J]. Journal of Traffic and Transportation Engineering, 2003, 3(4): 13-16. (in Chinese) doi: 10.3321/j.issn:1671-1637.2003.04.004
[2]	Feng Zhong-ju, Feng Rui-ling, Zhao Zhan-chang, et al. Effect of collapsible loess on pile foundation bearing capacity[J]. Journal of Traffic and Transportation Engineering, 2005, 5(3): 60-63. (in Chinese) http://transport.chd.edu.cn/article/id/200503013
[3]	Shi Gang, Wang Jin-guo, Zhi Xi-lan, et al. Calculation method of foundation bearing capacity based on division in loess area for highway engineering[J]. Journal of Traffic and Transportation Engineering, 2005, 5(4): 48-52. (in Chinese) http://transport.chd.edu.cn/article/id/200504010
[4]	Jing Hong-jun, Zhang Bin. Loess subgrade strength law[J]. Journal of Traffic and Transportation Engineering, 2004, 4(2): 14-18. (in Chinese) http://transport.chd.edu.cn/article/id/200402004
[5]	Chen Yun-min, Jia Ning, Chen Ren-peng. Soil arch analysis of pile-supported embankments[J]. China Journal of Highway and Transport, 2004, 17(4): 1-6. (in Chinese) doi: 10.3321/j.issn:1001-7372.2004.04.001
[6]	Zeng Wei-bing, Zhang Yi, He Ting-ji. Test of backfill compacting on highway bridge back[J]. Journal of Chang'an University: Natural Science Edition, 2004, 24(1): 65-68. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200401016.htm
[7]	Wang Ji-li, Liu Yi-lin, Luan Mao-tian. Subsidence of bucket foundation under horizontal dynamic load[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(Supp1): 4 562-4 567. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2004S1065.htm
[8]	Jing Hong-jun, Zhang Bin. Experiments of highway subgrade impact 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
[9]	钱鸿缙, 王继唐, 罗宇生. 湿陷性黄土地基[M]. 北京: 中国建筑工业出版社, 1985.
[10]	沙庆林. 公路压实与压实标准[M]. 北京: 人民交通出版社, 2001.
[11]	Peng Jian-bing, Chen Li-wei, Deng Ya-hong, et al. Numerical analysis of subgrade stability influenced by hidden holes in loess under dynamic load of vehicles[J]. China Journal of Highway and Transport, 2006, 19(4): 17-22. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL200604003.htm
[12]	Sha Ai-min, Chen Kai-sheng. Relationship between collapsibility and microstructure of compacted loess[J]. Journal of Chang'an University: Natural Science Edition, 2006, 26(4): 1-4. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200604000.htm
[13]	Zhu Yan-peng, He Yong-qiang. Rectification mechanism of expansion method for building inclination in area of collapsible loess and its experimental investigation[J]. Journal of Lanzhou University of Technology, 2006, 32(3): 108-111. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GSGY200603030.htm
[14]	Shao Sheng-jun, Zhou Fei-fei, Song Chun-xia. Analysis of moistening and compression deformation of loess considering soil structure variations[J]. China Civil Engineering Journal, 2006, 39(6): 94-99. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC200606017.htm