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A study on the field application of high strength steel pipe reinforcement grouting
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고강도 강관 보강 그라우팅의 현장 적용성에 관한 연구

논문 기본 정보

Type
Academic journal
Author
Journal
한국터널지하공간학회 한국터널지하공간학회 논문집 한국터널지하공간학회 논문집 제21권 제4호 KCI Accredited Journals
Published
2019.1
Pages
455 - 478 (24page)

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A study on the field application of high strength steel pipe reinforcement grouting
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Research history (3)

2021

A Study on the Design Method Considering the Flexural Behavior Characteristics of Steel Pipe Reinforcement Grouting Applied for Tunnel
신현강 건설공학과 2021.01 Thesis
Mechanism of steel pipe reinforcement grouting based on tunnel field measurement results
Shin Hyunkang ,  Jung Hyuk Sang ,  Lee Yong-Joo and others 2 한국터널지하공간학회 논문집 2021.01 Academic journal

2019

A study on the field application of high strength steel pipe reinforcement grouting
Shin Hyunkang ,  정혁상 ,  유용선 and others 1 한국터널지하공간학회 논문집 2019.01 Academic journal
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Abstract· Keywords

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In this paper, we conducted experimental investigation on the field applicability through the verification of reinforcement effect of the steel pipe reinforcement grouting using high strength steel pipe. SGT275 (formerly known as STK400) steel pipe is generally applied to the traditional steel pipe reinforcement grouting method. However, the analysis of tunnel collapse cases applying the steel pipe reinforcement grouting shows that there are cases where the excessive bending and breakage of steel pipe occur. One of the reasons causing these collapses is the lack of steel pipe stiffness responding to the loosening load of tunnels caused by excavation. The strength of steel pipe has increased due to the recent development of high strength steel pipe (SGT550). However, since research on the reinforcement method considering strength increase is insufficient, there is a need for research on this. Therefore, in this study, we conducted experiments on the tensile and bending strength based on various conditions between high strength steel pipe, and carried out basic research on effective field application depending on the strength difference of steel pipe through the conventional design method. In particular, we verified the reinforcement effect of high strength steel pipe through the measurement results of deformed shape and stress of steel pipe arising from excavation after constructing high strength steel pipe and general steel pipe at actual sites. The research results show that high strength steel pipe has excellent bending strength and the reinforcement effect of reinforced grouting. Further, it is expected that high strength steel pipe will have an arching effect thanks to strength increase.
#High strength steel pipe #The reinforcement grouting of steel pipe #Bending shear force #Tensile strength #The effect of steel pipe reinforcement

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References (18)

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Bae, G. J. / 1997 / A study on the ground movement around tunnel reinforced by umbrella arch method / Tunnel and Underground Space 7(4):299~309 google schola Barisone, G. / 1982 / Umbrella arch method for tunnelling in difficult conditionsanalysis of Italian cases / Proceedings of the 4th Congress of International Association for Engineering Geology 4:15~27 google schola 차민웅 / 2004 / Umbrella Arch 공법 적용시 강관의 거동에 관한 수치해석적 연구 dbpia Choi, Y. K. / 1997 / Application of umbrella arch method for tunneling in the soft ground / Journal of the Korean Geotechnical Society 1997(3):133~139 google schola Harazaki, I. / 1998 / Field observation of large tunnel supported by umbrella method: Case of Maiko tunnel in Kobe, Japan / Proceedings of the World Tunnel Congress 98 on Tunnels and Metropolises 2:1009~1014 google schola

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