›› 2006, Vol. 27 ›› Issue (7): 1119-1123.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Indoor experimental study on express railway embankment with weathered soft rock

QING Qi-xiang1, 2, WANG Yong-he1, LI Guang-yao2, GUO Jian-hu3   

  1. 1.School of Civil and Architectural Engineering, Central South University, Changsha 410083, China; 2.Department of Mechanical Engineering and Automobile, Hunan University, Changsha 410082, China; 3.Fourth Survey and Design Institute, Ministry of Railways, Wuhan 430071, China
  • Received:2004-09-30 Online:2006-07-10 Published:2013-11-19

Abstract: The indoor model experimental study on the physico-mechanical properties of pavement with weathered gravelly sands and argillite slate rock as the express railway embankment under quasi-static cyclic loads is introduced. Based on observations of some experiments, using biggest dry density and the optimum moisture content in its filling, the physico-mechanical properties including the moisture content of water, dry density, porosity ratio, angle of internal friction, cohesion value, displacements, stresses, permanent deformations, pressure distribution, bedding coefficient K30, deformation modulus Ev1 and deformation coefficient Ev2 of the embankment etc.,are obtained. With constitutive model for Drucker-Prager material, the stress and deformation characteristics of the pavement under quasi-static cyclic loads are analyzed by using finite element method. The numerical solutions are close with experimental ones. It is expected to put into use for design of pavement, control of compaction quality and construction in subgrade filling engineering.

Key words: soft rock, model test, static cyclic load, deformation modulus, Drucker-Prager material

CLC Number: 

  • TU 416
  • 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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