A Study on Strength Characteristics of Yieldable Steel Arch Supports

가축성 강재 지보의 강도특성에 관한 연구

  • 김종우 (청주대학교 지구환경시스템공학과)
  • Published : 1998.12.01

Abstract

The brief results of laboratory and field tests of yieldable steel arches are represented. The test supports were fabricated with three U-sectional beams which are 25.8 kg/m of Glocken profile. The structural analyses of semi-circular and arch supports were conducted to find out shape factor of U beam to be 1.35 and the location of 2nd plastic hinges. Load capacity of arch supports under crown loading were examined as a function of leg length. Yieldable characheristics of test supports were investigated with various bolting torque of connection part. Determination method of bolting torque were also studied. Finally, test supports were installed in-situ with torque of 21 kg .m, which showed a typical yielding procedure.

References

  1. Yieldable steel arches and yieldable steel ring supports in metal mines Eilertsen, N. A.
  2. Design of supports in mines Cemal Biron;Ergin Arioglu
  3. Min. Sci & Tech. v.3 Strength behavior of Steel arch supports with reference to loading distribution and joint position Ambrose, D.;B. N. Whittaker
  4. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. v.33 Full scale testing of arch tunnel support Khan, U. H.;H. S. Mitri;D. Jones
  5. instrumentation and proliminary results, Mining Science and Technology Characteristics of steel arch support systems for mine roadways., part 1. Modelling theory Jukes, S. G.;E. P. Hassani;B. N. Whittaker
  6. Practical Stress analysis in engineering design Blake, A.
  7. Mechnics of Materials Timoshenko, S. P.;James M. Gear
  8. Proc. of 1st ARMS Full Scale Tests of Steel Arch Supports Kim, J. W.;H. K. Lee
  9. 각종 형강구조설계 및 DATA 구성모(편저)
  10. 한국자원공학회지 v.31 no.1 심부갱도내 철재지보의 변형거동과 지보하중 결정에 관한 연구 김종우;이희근
  11. 광산장비 국산화 연구(Ⅵ), 한국형 U-Beam 개발 연구, KR-87-14 이경운(외)
  12. 대한광산학회지 v.25 no.5 삼척탄전지대 석탄광에서의 암반 응력 측정에 관한 연구 임한욱