›› 2008, Vol. 29 ›› Issue (8): 2157-2162.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Test study of reinforcing railway subgrades by using concrete compacted base-enlarged piles and geogrids

XIAO Hong1, 2, LUO Qiang2, DENG Jiang-dong2, HUA Ming3   

  1. 1. School of Civil Engineering, Beijing Jiaotong University, Beijng 100044, China; 2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 3. Engineering Department, Chengdu Railway Administration, Chengdu 610081, China
  • Received:2006-06-23 Online:2008-08-11 Published:2013-08-02

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Abstract: Three test sections were designed to investigate their effectiveness in reinforcing railway subgrades by using concrete compacted base-enlarged piles and geogrids based on the construction practice in the k337?665 ? ?770 section of the Da-Cheng Railway. Track smoothness and associated dynamic responses such as the stress, dynamic deformation and acceleration rate under the locomotive load are recorded during the tests. Test results show that the dynamic response in test sections is below the relevant limits. Running speed has an different impact, and the rule of acceleration increase with run-up is most obvious. Smoothness and stabilizing of railway have remarkable influence on dynamic responses such as the stress, dynamic deformation and acceleration rate in railway line and subgrade structure.

Key words: concrete compacted base-enlarged pile, subgrade reinforcing, locomotive load, dynamic response, field experiment

CLC Number: 

  • TU 473
  • 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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