Analysis of Static and Dynamic Characteristics of Reinforced Roadbed Materials

철도 강화노반재료의 정ㆍ동적 특성 분석

  • 황선근 (한국철도기술연구원 철도노반방재연구팀) ;
  • 신민호 (한국철도기술연구원 시설전기연구본) ;
  • 이성혁 (한국철도기술연구원 철도노반방재연구) ;
  • 이시한 (한국철도기술연구원 철도노반방재연구) ;
  • 최찬용 (한국철도기술연구원 철도노반방재연구팀)
  • Published : 2000.03.01

Abstract

The analysis of static and dynamic characteristics of reinforced roadbed materials was performed through model and laboratory tests. The strength characteristic of reinforced roadbed materials such as HMS-25 and soil were investigated through the unconfined axial compression test, the model soil box test and the combined resonant column and torsional shear test. The unconfined axial compression strength of HMS-25 shows a steady increasement in strength due to the chemical hardening reaction between HMS-25 and water. The result of model soil box test reveals that railroad roadbed of HMS-25 is better than that of soil in several aspects, such as, bearing capacity and settlement. The combined resonant column and torsional shear test result indicates that shear modulus of HMS-25 and soil increase with the power of 0.5 to the confining pressure and linear relationship to normalized shear modulus and damping ratio.