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김호수 전건우 청주대학교 산업과학연구소 2020 産業科學硏究 Vol.38 No.1
Preah Pithu temple is a cultural heritage that is highly valued for its historical and cultural value worldwide because of its mixed Buddhist and Hindu style. Preah Pithu temple has been damaged in various ways over the years. However, structural analysis and structural safety evaluation are difficult due to the unusual construction and structure types. Accordingly, this study intends to analyze the load transfer mechanism through the load distribution method for the Y temple, who has most damage among the five temples.
김호수,김동관,원태호,전건우 한국공간구조학회 2019 한국공간구조학회지 Vol.19 No.3
The stone pagoda continued to be damaged by weathering and corrosion over time, and natural disasters such as earthquake are accelerating the destruction of cultural properties. Stone pagoda has discontinuous structure behavior and is very vulnerable to the seismic load acting in lateral direction. It is necessary to analyze various design variables as the contact surface characteristics play an important role in the dynamic behavior of stone pagodas. For this purpose, contact surface characteristics of stone pagoda can be classified according to surface roughness and filler type, and representative model is selected and structural modeling and analysis are performed using the discrete element method. Also, the seismic load according to the repetition period is calculated and the dynamic analysis is performed considering the discontinuous characteristics of the stone pagoda. Finally, the seismic behavior characteristics can be analyzed by the evaluation of stresses, displacements and structural safety.
지진 하중을 받는 홍예교의 아치 형태에 따른 동적 거동 특성
김호수,이승희,전건우,방혁규 한국공간구조학회 2018 한국공간구조학회지 Vol.18 No.3
The arched stone bridge has been continuously deteriorated and damaged by the weathering and corrosion over time, and also natural disaster such as earthquake has added the damage. However, masonry stone bridge has the behavior characteristics as discontinuum structure and is very vulnerable to lateral load such as earthquake. So, it is necessary to analyze the dynamic behavior characteristics according to various design variables of arched stone bridge under seismic loads. To this end, the arched stone bridge can be classified according to arch types, and then the discrete element method is applied for the structural modelling and analysis. In addition, seismic loads according to return periods are generated and the dynamic analysis considering the discontinuity characteristics is carried out. Finally, the dynamic behavior characteristics are evaluated through the structural safety estimation for slip condition.
석탑문화재 손상 유형 및 영향 요인에 따른 손상도 평가
김호수,홍석일,전건우,김덕문,박찬민,Kim, Ho-Soo,Hong, Souk-il,Jeon, Gun-Woo,Kim, Derk-Moon,Park, Chan-Min 한국공간구조학회 2018 한국공간구조학회지 Vol.18 No.2
Stone pagoda structures have continued to be aged due to the combination of various damage factors. However, some studies on nonstructural damage have been carried out, but assessment studies on structural damage have not been done in various ways. Therefore, in this study, structural and nonstructural influencing factors according to the damage types are classified and the damage assessment according to the structural influencing factors affecting the behavior of the stone pagoda structure is performed. In addition, the damage rating classification criteria for each type of structural damages or damage locations are presented, and the damage index is calculated by providing the criteria for the classification of damage according to the degree of damage to which the damage is caused. Therefore, this study can evaluate quantitatively the damage status of stone pagoda structures.
김호수,김동관,전건우,Kim, Ho Soo,Kim, Dong Kwan,Jeon, Geon Woo 한국지진공학회 2021 한국지진공학회논문집 Vol.25 No.6
The Gyeongju and Pohang earthquakes caused damages to many cultural properties; particularly, stone pagoda structures were significantly damaged among masonry cultural properties. To preserve these structures, it is necessary to understand their dynamic behavior characteristics under earthquakes. Analyses on such areas as deformation, frequency, maximum acceleration, permanent displacement, sliding, and rocking have to be performed. Although many analytical studies have already been conducted, dynamic behavior studies based on experiments are insufficient. Therefore, this study analyzed dynamic behavior characteristics by performing a shaking table experiment on a three-story stone pagoda structure at the Cheollongsa temple site damaged by the Gyeongju earthquake. As a result of the experiment, the displacements of stylobates did not occur significantly, but the tower body parts rotated. In particular, the rotation of the 1F main body stone was relatively larger than that of the other chief body stones because the 1F main body stone is relatively more slender than the other parts. In addition, the decorative top was identified as the component most vulnerable to sliding. This study found that the 1F main body stone is vulnerable to rocking, and the parts located on the upper part are more vulnerable to sliding.
김호수,김동관,전건우,Kim, Ho-Soo,Kim, Dong-Kwan,Jeon, Geon-Woo 한국공간구조학회 2020 한국공간구조학회지 Vol.20 No.4
In case of stone pagoda structures, the various construction types appear, and various damages occur due to exposure to the outdoors for a long time. Such damages can be classified into non-structural damages and structural damages. However, studies for the effects of structural damages on stone pagoda structures are insufficient. Accordingly, this study intends to perform structural modeling and structural analysis according to structural damages of stone pagoda structure, and to perform risk analysis through the fragility curve. So, we expects that this study gives a great contribution to the preservation and maintenance of stone pagoda structures under the various structural damages.
추력선 해석을 이용한 미얀마 파야톤주 사원의 손상 원인 분석
홍석일,전건우,정인기,한욱빈,김호수 한국공간구조학회 2020 한국공간구조학회지 Vol.20 No.2
Phaya-Thon-Zu temple has a unique architectural style connected by the three temples, and cultural values are highly as murals remain on some of the walls. However, various damages in internal walls and vaults have occurred due to earthquake and environmental influences. In order to analyze these damages, accurate structural analysis is required, but structural modeling is difficult, because Phaya-Thon-Zu temple is the complex masonry structure which is stacked with small bricks. Therefore, this study intends to analyze the causes of damages by examining collapse mechanism for cross section and longitudinal section of vaults in the entrance hall and shrine by using thrust line analysis, which is a geometric method, and to compare it with the actual damage situation
조항민 ( Cho Hang-min ),전건우 ( Jeon Geon-woo ),김호수 ( Kim Ho-soo ),김영환 ( Kim Young-hwan ),이일섭 ( Lee Il-sop ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.2
설비배관은 온도에 의한 신축 및 팽창을 고려한 설계를 하거나, 배관의 자중만을 고려하여 설계되고 제작된다. 그러나 설비배관 행거시스템에 지진 또는 지속적인 외부 진동이 발생하면 그 충격을 감소 및 흡수하지 못하고 2차적인 피해로 이어질 수 있다. 이에 따라 본 연구에서는 내진성능을 고려한 설비배관 행거시스템을 개발하고, 진동대 실험을 통해 지진거동특성을 평가하고자한다.
이윤형 ( Lee Yoon-hyung ),전건우 ( Jeon Geon-woo ),김동관 ( Kim Dong-kwan ),김호수 ( Kim Ho-soo ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.2
석탑문화재는 오랜기간 야외에 노출됨으로써 자연재해, 인위적 훼손 등으로 인해 다양한 손상이 발생하고 있다. 이러한 다양한 손상유형에 따른 구조적 안전성을 확보하기 위해서는 체계적인 손상유형의 분류와 손상요인에 대한 분석이 필요하다. 이에 따라 본 연구에서는 석탑문화재에 발생하는 다양한 손상을 구조적 손상과 비구조적 손상으로 분류하고 손상유형에 따른 구조적 영향요인을 분석하고자 한다.
이승희 ( Lee Seung-hee ),전건우 ( Jeon Gun-woo ),방혁규 ( Bang Hyeok-kyu ),김호수 ( Kim Ho-soo ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
In this study, we propose a structural modeling method to analyze the seismic behavior characteristics of arched stone bridge. For this purpose, we select the representative model of arched stone bridge, and various arch types are set in consideration of the width and height. Accordingly, this study applies the discrete element method for the modelling of discontinuum structure to analyze the seismic behavior characteristics according to the various arched types.