In this study, the effect of electromagnetic wave from an electronic device on electric sensor system and optic sensor were analyzed to verify the reduction effect of a optic sensor and applicability to marin structure. Test revealed that optic sensor system was not occurred the noise by electromagnetic waves also had the low range of fluctuation.

Temporary structures are essential elements in the high-rise structures. They are various and one of them, prefabricated shoring system is very useful. Because it is easy to install prefabricated shoring system. But collapse disaster of prefabricated shoring system occurs every year. In most situations, design deficiency and lacking in strength of vertical member give rise to the collapse. In this study, buckling stability of prefabricated shoring system was analyzed in the design phase.

Recently, the problem about a structural safety of the tunnel lining concrete is much raised. Thus, in this paper, We introduce a safety analysis case about an insufficient filling of the road tunnel(NATM) lining concrete for numerical analysis.

Precise Inspection for Safety Diagnosis on 6 dams have been conducted by KISTEC. Spillway is the main structure of dam facilities especially in discharging water. Crack, leakage, and other defects have been inspected and analyzed depending on the purpose of spillway such as water gate or gate of intake.

The purpose of this study is to present a suitable maintenance guide or plan for future small scale vulnerable facilities by analyzing the investigation data collected through the safety inspection. For this, we examined about 3,301 buildings. From a number of defects, damages associated with the safety and durability of building were preferentially analyzed.

우리나라는 수출ㆍ입 물동량의 대부분을 해상수송에 의존하고 있는 입장에서 예기치 못한 안전사고 등으로 컨테이너터미널의 정 상적인 기능을 수행하기 어렵고 신뢰성에 문제가 되어 신규 물량 유치 및 기존 물량 유지에 타격을 받게 될 가능성도 제기 된다. 이에 컨테이 너터미널에서는 365일 고객에게 최상의 서비스 질을 제공하기 위해서 항만근로자의 적극적인 업무 대처와 역할을 강조하고 있는 실정이다. 이러한 결과 항만근로자들에게 과중한 업무의 부담이 전가되어 안전사고가 매년 발생하고 있다. 본 논문에서는 실제 광양항 A 컨테이너터미 널의 2012년부터 2015년 재해현황을 분석하고, 안전사고 교육 미비 상태와 안전사고 교육을 꾸준히 실행 했을 때 컨테이너터미널의 안전사고 현황을 분석하였다. 장비별 안전사고 분석결과 GC 경우 교육 전 2012년 45건, 2013년 31건이 발생했으며, 교육준비 과정 2014년 23건, 집중 교육 기간 2015년에는 8건이 발생하였다. TC 경우 교육 전 2012년 13건, 2013년 19건이 발생했으며, 교육준비 과정 2014년 12건, 집중 교육 기간 2015년에는 8건이 발생하였다. YT 경우 교육 전 2012년 9건, 2013년 9건이 발생했으며, 교육준비 과정 2014년 9건, 집중 교육 기간 2015 년에는 4건이 발생하였다. 컨테이너터미널의 안전교육은 법정 교육, 자체 교육과 장비별 안전 수칙 교육이 컨테이너터미널에서 안전사고에 미치는 영 향이 크게 나타남에 따라 안전사고를 미연에 예방하기 위해서 안전교육을 강화하고 있다.

A disaster can be defined in many ways based on perspectives, in addition, its types are able to classify differently by various standards. Considering the different perspectives, the disaster can be occurred by natural phenomenon that is like typhoon, earthquake, flood, and drought, and by the accident that is like collapse of facilities, traffic accidents, and environmental pollution, etc. Into the modern society, moreover, the disaster includes the damages by diffusion of epidemic and infectious disease in domestic animals. The disaster was defined by natural and man-made hazards in the past. As societies grew with changes of paradigm, social factors have been included in the concept of the disaster according to new types unexpected by new disease and scientific technology. Change the concept of social disasters, Ministry of Public Safety and Security (MPSS) has provided the regional safety index, which measures the safety level of a local government. However, this regional safety index has some limitation to use because this index provides the information for city unit which is a unit of administrative districts of urban. Since these administrative districts units are on a different level with urban and rural areas, the regional safety index provided by MPSS is not be able to direct apply to the rural areas. The purpose of this study is to determine the regional safety index targeting rural areas. To estimate the safety index, we was used for 3 indicators of the MPSS, a fire, a crime, and an infectious disease which are evaluable the regional safety index using an accessibility analysis. For determining the regional safety index using accessibility from community centers to public facilities, the safety index of fire, crime, and infectious disease used access time to fire station, police office, and medical facility, respectively. An integrated Cheongju, targeting areas in this study, is mixed region with urban and rural areas. The results of regional safety index about urban and rural areas, the safety index in rural area is relatively higher than in the urban. Neverthless the investment would be needed to improve the safety in the rural areas.

국내의 지진 발생 추이가 증가세를 보이고 있으며, 이에 따라 시설물 피해를 주고 큰 인명 피해를 초래하는 지진재해에 대한 대비의 중요성이 대두되고 있다. 지진재해에 대비하기 위해서는 지진 또는 진동가속도에 대한 실시간 계측을 하는 것이 중요하다. 일본과 미국의 경우 중요 시설물에 대하여 이미 실시간 지진가속도계측을 시행하고 있으며 계측된 지진가속도데이터는 데이터베이스화되어 관리되고 있다. 이를 이용해 내진설계기준 개정시 또는 지진으로 인한 피해 예측시 활용하고 있다. 국내의 경우, 최근 지진재해대책법 및 시행규칙이 개정되어 공포 되었으며, 국민안전처에서 지진가속도계측자료 통합관리시스템을 구축해 나가고 있는 상황이다. 본 연구의 목적은 국민안전처 통합관리시스 템에 연계가 가능한 시설물 실시간 진동 감지 및 분석 시스템을 개발 하는 것이다. 이 시스템은 지진가속도계측데이터 모니터링 기능을 포함하 며, 또한 고속푸리에변환, 고유진동수 추출, 응답스펙트럼, 파워스펙트럼, 진도 표출, 시설물 건전도 평가 등 다양한 가속도데이터 분석 기능을 갖추고 있을 뿐만 아니라 국민안전처 지진가속도계측자료 시스템에 연계가 가능하도록 설계되었다. 개발된 시스템은 시설물의 안전관리 네트 워크 구축, 지진 또는 진동으로 인한 시설물의 피해에 대한 대비, 유지관리 비용의 최소화에 긍정적인 효과가 있을 것이라고 판단된다.

This study carried out an investigation about damage characteristic of substructure such as pier and abutment of highway bridge. The applied methodology was the average damage analysis according to service life. By using above methodology, damage characteristic of substructure penetrated water included de-icing salt was investigated. It was found that the area where was under heavy snow exhibited higher amount of average damage than that of the area where was under much less snow.

Recently, it was found that the Vulnerability Index(VI) of Preliminary assessment for water pipelines seismic performance in domestic had lacks of correlation of detailed safety assessment. The purpose of this study is to propose a reasonable VI by analysing on correlation between existing VI and safety factor.

The recent revision of Housing Act allow vertical extension up to maximum 3 stories and increase the ratio of floor area to site up to 15%. Currently, the feasibility of performing vertical extension is evaluated based on safety diagnosis provisions and manuals for vertical extension with preliminary investigations on slope, deflection, load-bearing capacity, and durability. However, a need for more reasonable evaluation methodology for the preliminary investigation is still required because the current procedures are borrowed from safety diagnosis provisions and manuals for reconstruction without detailed examinations on evaluation criteria and sampling methods. Accordingly, this study is intended to suggest a method to obtain feasible sampling numbers for durability assessment by analyzing field data on concrete carbonation, chloride content, and steel corrosion. The results of this study are expected to be beneficial for establishing more reasonable field sampling number, and in turn, more reliable durability assessment protocol for vertical extension.

Drought caused by global climate change is one of serious problems for rice cultivation. However, it was little reported the impact of drought on rice cultivation in Korea. In here, to assess impact of drought on rice varieties in Korean climate condition, growth characteristics and yield components of rice were compared on irrigated and partially irrigated rice paddy field. First, we have chosen 11 rice varieties including ‘Saeilmi’ and ‘Shindongjin’ which are widely cultivated in Korea. For partially irrigated rice paddy treatment, we have withheld irrigation from 25 days after transplanting and water supply was totally dependent on rainfall for rice cultivation. When we examined early plant height and tiller number of these varieties on partially irrigated rice paddy were reduced 1.6% to 18.4% and 10.4% to 33.1%, respectively, and these reduction rate were highly correlated with yield loss in our experimental conditions. Among rice yield components, panicle number was decreased 10.5% to 30.1% according to rice varieties and reduced panicle number was highly correlated with yield loss. Grain number per panicle, grain filling rate and 1,000 seeds weight did not have correlation with yield loss of rice varieties. These result means that growth stage, especially the tillering stage, is seriously affected by drought on rice cultivation in Korea. And we suggest that ‘Saeilmi’, ‘Ilmi’ and ‘Ilpum’ are good for rice cultivation on drought prone rice field in Korea.

In this study, the structural assessment on the effect of differential deformation of HDRB was performed for double deck warren truss bridge. The results show that the differential deformation of HDRB sharply decreases the safety rate of the superstructure of the bridge.

In this study database on the results of in-depth inspection was built and statistical analysis was performed on the major faults for concrete dams. using condition evaluation results for existing concrete dams.

A portable device which calculate and analysis the SOC structure data. This device can be used to estimate the building prior to install the sensing system. This sensing tools can help the system engineers to analyze the large SOC structure’s responses.

건축물들의 화재와 안전사고 등의 철저한 관리와 불특정 다수인들의 피해를 예방하기 위하여 주요 시설물에 대한 점검, 유지, 관리교육 등 기존 건축시설물의 관리현황들을 조사ㆍ분석하였다. 그 결과는 1. 조직적인 측면에서 시설관리자들의 자발적인 재난예방과 재난수습의 원활한 추진을 위해서는 높은 통솔력과 지휘감독권이 절실히 요구된다. 그것은 시설관리자에게 실질적인 예산의 편성 및 운용을 할 수 있는 권한을 주고 또한 실무자에게도 맡은 부분에 관하여 책임과 권한을 주는 제도적 장치도 필요하다. 2. 인력적 측면에서 시설물의 관리자 대부분은 30대와 40대가 대다수를 차지하고 있고, 실무자는 30대(48％)에서 40대(24％)로 가면서 절반으로 줄어들었다. 관리자 및 실무자의 경력에 있어서도 7～10년 미만과 15～20년 미만의 분포가 낮은 것은 건축물의 시설관리의 전문 인력이 부족한 현상으로 실무자들이 현장에 남아서 정년을 맞을 수 있는 대책이 필요하다. 3. 시설관리자 및 실무자들의 근무 조건에서 시설관리자나 실무자 대다수는 근무형태가 불규칙한 근로 조건(71%)에서 근무하고, 급여의 조건도 미비하며 근무환경 역시 열악하였다. 따라서 이의 개선이 필요하며 현실적인 급여 등의 개선도 중요할 것이다. 4. 시설관리의 측면에서 시설물 관리자의 74%가 두 가지 이상의 시설관리업무를 수행하고 있고, 또한 넓은 관리면적을 담당하고 있었다. 이렇듯 시설물의 안전이나 충실한 관리 점검을 위해서도 관리자나 실무자들의 잡무 등은 줄여야 할 것으로 사료된다. 5. 교육의 측면에서 시설관리자들은 법정교육에 대해 89%가 상당한 도움이 된다고 하였다. 그러나 교육의 내용을 살펴보면 이론위주의 교육이 83％로 대부분을 차지하며, 시설관리현장에 바로 적용할 수 있는 실무위주의 교육은 17％밖에 되지 않아 아쉽다고 하였다. 이렇듯 실무교육시간의 확대가 필요하다.

Recently, a safety of the building has been issued. In this study, a statistical analysis of the licensing status of the building construction has been performed to check the trend of building construction. Finally, results of the statistical analysis would be helpful to improve of the building safety.

Since then the Special Act on the Safety Control of Public Structures has been enforced, the precision safety Inspection result was being collected. but it was not performed to comprehensive analysis and D/B. In this study, statistical analysis was performed by utilizing the Precise Inspection for Safety of Dam.

Construction of long span bridges is rapidly increasing, the criteria of impact load and study of stability for suspension bridge cables by rear-end collisions and crash of the vehicle, not at the moment is the actual situation. In this study, the main cable of suspension bridges was applied appropriate impact loads and analyzed the structural stability of the cable.