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국내 발생지진에 의한 물류창고 강재 적재설비의 내진성능 평가
전종수,최형석,서영득,김충길,허광희 한국지진공학회 2018 한국지진공학회논문집 Vol.22 No.3
This study experimentally and analytically examines the seismic vulnerability of steel rack storage frames subjected to Korea earthquakes (2016 Gyeongju earthquake and 2017 Pohang earthquake). To achieve this aim, this study selects a three-story, one-bay steel rack frame with a typical configuration of rack frame in Korea. Firstly, the local behavior for frame components is examined by performing monotonic and/or cyclic load tests and the global response and dynamic characteristics of the subject rack frame are investigated by conducting a shaking table test. The analytical model of the rack frame is then created based on the experimental results and is used to perform nonlinear time history analyses with recorded Korea earthquakes. The seismic demand of the rack frame is considerably affected by the spectral acceleration response, instead of peak ground accelerations (peak floor accelerations). Moreover, the collapse fragility curve of the rack frame is developed using incremental dynamic analyses for the Gyeongju and Pohang earthquakes. Fragility results indicate that the ground motion characteristics of these earthquakes do not significantly affect the frame vulnerability at the collapse state.
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한국의 인터넷 게임 셧다운제 정책의 효과성에 대한 연구
전종수 한국게임학회 2014 한국게임학회 논문지 Vol.14 No.6
본 논문은 국내에서 실시되고 있는 인터넷게임 셧다운제의 효과성에 대한 분석을 한다. 청소년보호를 목적으로 정부(문화체육관광부와 여성가족부)에 의하여 실시되고 있는 선택적 셧다운제와 강제적 셧다운제의 효과성을 검증하는 데 중점을 둔다. 분석 결과 인터넷게임과 게임중독간의 원인관계를 명확히 증명하기 어렵다. 또한 인터넷게임 셧다운제 정책만으로는 인터넷게임 중독을 예방할 수 없음을 밝힌다. 이를 기반으로 하여 청소년들의 인터넷게임 중독예방을 위한 다양한 정책을 제언한다. This paper shows an analysis of the effectiveness of internet games shutdown policy being conducted in Korea and focusing on a verification of the effects of the selective games shutdown and the compulsory games shutdown running for the prevention of adolescents' addiction by korea government (Ministry of Culture, Sports and Tourism, Ministry of Gender Equality and Family). According to the results, It is difficult to clearly prove the causal relations between internet games and addiction. Also the internet games shutdown policy is not only the most effective means for preventing internet games addiction. On the basis of it, this paper proposes effective policy measures to prevent the internet game addiction of adolescents.
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CFRP 교각 재킷 보수를 적용한 손상된 철근콘크리트 교량 교각의 여진 취약도 분석
전종수,이도형 한국지진공학회 2018 한국지진공학회논문집 Vol.22 No.5
This paper presents a framework for developing aftershock fragility curves for reinforced concrete bridges initially damaged by mainshocks. The presented aftershock fragility is a damage-dependent fragility function, which is conditioned on an initial damage state resulting from mainshocks. The presented framework can capture the cumulative damage of as-built bridges due to mainshock-aftershock sequences as well as the reduced vulnerability of bridges repaired with CFRP pier jackets. To achieve this goal, the numerical model of column jackets is firstly presented and then validated using existing experimental data available in literature. A four-span concrete boxgirder bridge is selected as a case study to examine the application of the presented framework. The aftershock fragility curves are derived using response data from back-to-back nonlinear dynamic analyses under mainshock-aftershock sequences. The aftershock fragility curves for as-built bridge columns are firstly compared with different levels of initial damage state, and then the post-repair effect of FRP pier jacket is examined through the comparison of aftershock fragility curves for as-built and repaired piers.
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AHP 분석기법을 활용한 수 처리 서설물의 성능 평가 지표 선정에 관한 연구
전종수,박진상,오상근,임남기 대한건축학회지회연합회 2016 대한건축학회연합논문집 Vol.18 No.5
본 연구는 국내 수 처리 시설물에 적용되고 있는 방수ㆍ방식재를 대상으로 재료별 특성에 따른 분류체계를 정립하여 제시하는 것과, 수 처리 시설물에서의 시공 및 사용 환경조건과 다양한 하자사례 분석을 통해 각 분류별 방수ㆍ방식재의 실질적으로 요구되는 성능 보유 유무의 평가가 가능할 수 있는 성능 평가 지표를 선정하는 것을 목적으로 하였다. 이를 위해 각 방수・방식재들의 특성 및 유사성을 파악하여 계열별로 분류를 실시하였으며, 각 재료별 하자 사례를 분석하였다. 하자 사례 분석을 토대로 방수・방식재의 수 처리 시설물 환경에서 요구 성능 확보 여부의 평가가 가능한 총 12개의 성능 평가 지표 안(案)을 우선적으로 도출하였다. 도출된 12개의 성능 평가 지표 안(案)에 대하여 AHP분석기법을 적용하여 항목별 중요도를 부여한 후 가장 높은 중요도의 60%이하로 현저히 낮은 중요를 가진 항목 5개를 제외하였으며, 최종적으로 7개의 성능 평가 지표(습윤면부착성, 내피로성, 내균열성, 부착성능, 접합성능, 내충격성, 내투수성)를 제시하였다. This study proposes a selection method of a performance evaluation index of waterproofing and anti corrosion materials used in domestic water treatment facilities for material and construction failures based on different usage and environmental conditions to study the possibility of structural performance maintenance. Different types of waterproofing・anti-corrosion materials have been evaluated based on their respective properties, and have been classified into separate categories based on their case studies of material failures in construction. As a result, 12 different performance evaluation indexes have been produced for the performance evaluation method. Among the 12 performance evaluation index 5 were selected with relatively low importance that produced a low value of 60% importance using AHP analysis method, and conclusively proposed 7 performance evaluation index criteria (wet surface adhesion, fatigue resistance, crack resistance, adhesion performance, joint performance, impact resistance, impermeability)
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비내진 상세를 갖는 철근콘크리트 교량의 응답에 대한 수직방향 지진파의 영향
전종수 한국복합신소재구조학회 2016 복합신소재구조학회논문집 Vol.7 No.4
This research describes the impact of vertical earthquake components on the performance of typical non-ductile bridges. To achieve this goal, this research chooses a non-seismically designed reinforced concrete bridge typically found in the California area. Particularly, their columns with inadequate design have a higher possibility of shear failure. To consider this failure, the column model reflects shear-axial interaction effect and is verified by comparing simulated results and experimental data available in literature. Two computational bridge models having column shear model subjected to constant and varying axial load are then built to conduct inelastic dynamic analyses. The responses are employed to construct probabilistic seismic demand models for two bridge models. This results indicate that the consideration of shear-axial interaction effect increases the seismic demand of all bridge components in non-ductile bridges, resulting in their increased seismic vulnerability.
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