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최만용(Choi Man-Young),홍사장(Hong Sa-Jang),지기환(Jee Kee-Hwan),박정학(Park Jeong-Hak),김수언(Kim Su-Un) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
The number of Tunnels for railway, subway. road, rapid railway have been Increased and Increasing continuously. And the tunnels are to be larger and longer of Its dimension Therefore, inspection, repair, and maintenance of tunnels are an extremely Important part of Infrastructure, management To inspect surface state of tunnels, concrete structures, it must generally use method of conventional visual inspection, but this method is very not objective. To measure the width, length, position, direction of a crack, It is very difficult, when the tunnel is long span and high rise Thu.;;, to make up for this demerits, in this paper is proposed the system that we can ,check conditions in the tunnel structures quickly, detect the detailed data objectively, count automatically the width of a crack by the origioal software and follow the trend of long term changes In the condition of a structure.
최만용 ( Choi Man-young ),홍사장 ( Hong Sa-jang ),지기환 ( Jee Kee-hwan ),박정학 ( Park Jeong-hak ),김수언 ( Kim Su-un ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.2
The number of Tunnels for railway, subway, road, rapid railway have been increased and increasing continuously. And the tunnels are to be larger and longer of its dimension. Therefore, inspection, repair, and maintenance of tunnels are an extremely important part of infrastructure management. To inspect surface state of tunnels, concrete structures, it must generally use method of conventional visual inspection, but this method is very not objective. To measure the width, length, position, direction of a crack, it is very difficult, when the tunnel is long span and high rise. Thus, to make up for this demerits, in this paper is proposed the system that we can check conditions of the tunnel structures quickly, detect the detailed data objectively, count automatically the width of a crack by the original software and follow the trend of long term changes in the condition of a structure.
최만용(Choi Man-Young),황인섭(Hwang In-Sueb),홍사장(Hong Sa-Jang),지기환(Jee Kee-Hwan) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Passenger's tunnels for trains, cars and metro as well as utility tunnels have seen their numbers soared. Recently, the tunnel structures are increasing. And the tunnels are to be large diameter tunnel and long. Therefore, inspection, repair, and maintenance of tunnels are an extrernely important part of infrastructure management, with particular technical and safety considerations arising from the very nature of underground construction. To inspect surface state of tunnels, concrete structures, it must generally use method of conventional visual inspection, but this method is very not objective. To measure the width, length, position, direction of a crack, it is very difficult, when the tunnel is long span and high rise. Thus, to make up for this demerits, in this paper is proposed the system that we can check conditions of the tunnel structures quickly, detect the detailed data objectively, count automatically, the width of a crack by the original software and follow the trend of long term changes in the condition of a structure.
터널스캐닝 시스템을 이용한 외관조사 품질개선에 관한 연구
지기환(Jee Kee-Hwan),정재민(Chung Jae-Min),홍사장(Hong Sa-Jang),김수언(Kim Su-Un) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
Recently, the tunnel structures are increasing. And the tunnels are to be large diameter tunnel and long. Therefore, inspection, repair, and maintenance of tunnels are an extremely important part of infrastructure management, with particular technical and safety considerations arising from the very nature of underground construction. To inspect surface state of tunnels, concrete structures, it must generally use method of conventional visual inspection, but this method is very not objective. To measure the width, length, position, direction of a crack, it is very difficult, when the tunnel is long span and high rise. Thus, to make up for this demerits, in this paper is proposed the Tunnel Scannig System that we can check conditions of the tunnel structures quickly, detect the detailed data objectively, count automatically the width of a crack by the original software and follow the trend of long term changes in the condition of a tunnel.
최만용 ( Choi¸ Man-young ),황인섭 ( Hwang¸ In-sueb ),홍사장 ( Hong¸ Sa-jang ),지기환 ( Jee¸ Kee-hwan ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.1
Passenger’s tunnels for trains, cars and metro as well as utility tunnels have seen their numbers soared. Recently, the tunnel structures are increasing. And the tunnels are to be large diameter tunnel and long. Therefore, inspection, repair, and maintenance of tunnels are an extremely important part of infrastructure management, with particular technical and safety considerations arising from the very nature of underground construction. To inspect surface state of tunnels, concrete structures, it must generally use method of conventional visual inspection, but this method is very not objective. To measure the width, length, position, direction of a crack, it is very difficult, when the tunnel is long span and high rise. Thus, to make up for this demerits, in this paper is proposed the system that we can check conditions of the tunnel structures quickly, detect the detailed data objectively, count automatically; the width of a crack by the original software and follow the trend of long term changes in the condition of a structure.
영상기반 스캐닝 시스템을 이용한 대형 시설물의 균열손상 검출 정확도 분석
박신전 ( Park Sinzeon ),박진태 ( Park Jin Tae ),지기환 ( Jee Kee Hwan ),홍사장 ( Hong Sa Jang ) 한국복합신소재구조학회 2021 복합신소재구조학회논문집 Vol.12 No.6
This paper presents quantitative evaluation methods and case studies on the detection performance and accuracy of image-based scanning systems used for inspection and diagnosis of large-scale facilities. Through a case study on concrete linings of railway and subway tunnels, the detecting performance and accuracy of various damages such as cracks, spalling, segregation, efflorescence, rebar exposure, leakage were evaluated by comparing tunnel scanning analysis to on-site verification, taking into account the number of detected and confirmed points and areal quantity. It was confirmed that the detection performance on cracks and damages of the proposed tunnel scanning system was significantly superior in terms of the number of detected points and areal quantities compared to the results of visual inspection, and the total cracks and damages taking the variances were evaluated to have at least 95% detecting accuracy after on-site verification.