›› 2008, Vol. 29 ›› Issue (8): 2097-2101.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Model experimental research on dynamic performance of pile-plank embankment

ZHAN Yong-xiang1, 2, JIANG Guan-lu2, NIU Guo-hui2, WEI Yong-xing3   

  1. 1. School of Civil Engineering, Chongqing University, Chongqing 400030, China; 2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 3. The Second Railway Survey and Design Institute, Chengdu 610031, China
  • Received:2006-11-17 Online:2008-08-11 Published:2013-08-02

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Abstract: The pile-plank embankment is a kind of new-type of ballastless truck in high-speed railway. Based on the theorem of Bockingham ?, the dimensional analysis method is applied, and the dynamic model similitude constant of pile-plank embankment is determined. Dynamic characteristics of pile-plank embankment before and after soaking in water are analyzed by the large scale model test under dynamic loading. The test results indicate that dynamic stress of the soil decreases with the increase of vertical depth, and it is less affected by loading frequency. After the roadbed side-ascent soaking in water, at the same loading frequency, dynamic stress is slightly increased compared to embankment before soaking in water. Pile structure expands the depth of the dynamic response of roadbed and improves the stress of the roadbed soil. Bearing stratum at pile-bottom is greatly affected by dynamic loading; and it is one of the key of the dynamic design.

Key words: high-speed railway, ballastless truck, pile-plank embankment, dynamic model test, dynamic stress

CLC Number: 

  • U 213.1
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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