A study on soft soil improvement method of Seoul-Busan high-speed railway 6-2nd construction

경부고속철도 제6-2공구 노반신설 공사 중 치환공법을 통한 연약지반 처리연구

  • 정재민 (코오롱건설 토목사업본부) ;
  • 임창빈 (코오롱건설 토목설계팀) ;
  • 최상헌 (코오롱건설 토목설계팀) ;
  • 이광재 (한국도시철도공단 충청지역본부)
  • Published : 2011.05.26

Abstract

This study is about how to handle very soft grounds consisted of coal and household garbage(organic soil), clay, silt and so on, through examining Seoul-Busan High-Speed railway 6-2nd section. The soft soil might induce long term settlement and lead to structure's differential settlement eventually. So, we performed the boring test for characteristic of railway ground, laboratory test and field survey for mechanical property. And we also collected the engineering data of ground and the data for the establishment arrangement. These data were examined thoroughly considering residual settlement and strength by high-speed railway design standard. As a result of this study, we can say high-speed railway ground must have enough bearing capacity and be settled under allowable residual settlement(10cm). And also it needs to replace soft ground with high quality sand for the fundamental solution. With the application of replacement method on this study, we expect enough condition to construct stable high-speed railway.

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