성숙도는 비파괴시험으로 현장 콘크리트 강도를 시간과 온도의 함수로 추정하는 방법이다. 본 연구의 주목적은 실내실험에서 추정한 성숙도 곡선을 이용하여 whitetopping의 줄눈절삭과 교통개방의 시간을 결정하는 것이다. 또한 대기온도가 콘크리트 슬래브 온도와 성숙도에 미치는 영향을 평가하였고, 줄눈절삭과 교통개방시기를 결정하기 위해 성숙도 곡선을 개발하였다. i-button을 슬래브 내부에 설치하여 온도를 계측하였고, strain gauge를 이용하여 변위를 측정하였다. 실내실험에서 얻어진 성숙도 곡선을 이용하여 현장 압축강도를 예측한 결과, 현장 압축강도와 성숙도 곡선에서 예측된 압축강도와는 상당한 차이를 나타냈다. 이와 같은 결과는 현장의 양생조건, 대기온도, 풍속을 포함하는 여러 인자가 현장콘크리트 강도에 중요한 영향을 미치는 것으로 판단되었다. 여러 인자 중에서 대기온도의 변화에 따른 슬래브 온도와 성숙도 값에 미치는 영향을 평가한 결과, 대기온도는 슬래브 온도와 성숙도에 큰 영향을 미치는 것을 알 수 있었다. 특히 대기온도에 따른 성숙도 곡선의 기울기는 감소하였으며, 이는 대기온도가 감소함에 따라 성숙도 값이 급격히 감소하였다.

As domestic buildings have been large-scaled, diversified and high-rise, there have been a consistent demand for design, development of construction technology and accident prevention activity as well as quality enhancement. In spite of governmental and r

An agriculture which is one of the national security industry, has recognized the importance. International country have attention to the automatization of machine for the improvement of agriculture. However, because of modernization of agriculture, the rate of accurrence about agriculture accident has increased dramatically. Especially the rate of accurence of agricultural accident is higher than the other industrial accident in the developed country. Because of these reasons, developed country has efforted to the agriculture system about safety. Australia law for the safety system of agriculture is very well and the rate of accident in the self-management agriculture is included in the statistics of industrial But The rate of accident in self-management agriculture is very higher In future we have to try new method about Agricuture Safety of Korea.

In 21st century, According to development of Information Technology, It is clear that the importance of tourism information is extended increasingly. For this reason, It should be needed to realize a general system which make it possible to enjoy cyber tourism based on knowledge information system to recover a local potential growth power, catch a jumping chance again, and hold a new competitive power. But to discuss a tourism information system, the matters of hard ware, software and information mediating system should be reviewed generally, this research is likely to provide a cyber tourism information system through internet as a way of cyber tours through multimedia technology and stereoscopic image technique using GIS (Geographic Information System) centering on the networking system of tourism information. Constructing 「cyber touristy city」 on internet, foster a new industry, to go balanced with a present tourism industry and experience a virtual reality, various theme tours create high profit to shrunken tourism industry.

As domestic buildings have been large-scaled, diversified and high-rise, there have been a consistent demand for design, development of construction technology and accident prevention activity as well as quality enhancement. In spite of governmental and related institutions' efforts for reducing national losses which come from numerous accidents, there have been endless small and large accidents on the construction site and thus, it is urgent to conduct empirical researches in this area. Currently safety supervision system in construction industry has enforced harm and danger prevention planning system, however it merely stick to other existing materials. In addition, it is difficult to put it into practice in that it requires bearing too much burden to draw out the planning itself in a case of large construction work. Consequently in this paper we select evaluation criteria by construction progress, classify into several categories, and regard potential danger which often occurs, as a evaluation criterion. Further step is to allow workers or collaborated companies to express their expert opinions or experiences and to encourage quality and process control and autonomous safety control by applying PSM(Process Safety Management) method Using AHP(Analytic Hierarchy Process) and to Development of PSM evaluation method in the construction. The reason why PSM method should be quantitative and substantial progress is because it contributes Korean constructing companies to enhancing their safety control ability and to taking an equal stance just like developed countries,' thereby streng3thening there competitive edges. Boost of safety control system by PSM method will make an enormous contribution to preventing construction accidents on the site by establishing and securing an autonomous safety control system.

It should be needed to realize a general system which make it possible to enjoy cyber tourism based on knowledge information system to recover a local potential growth power, catch a jumping chance again, and hold a new competitive power. But to discuss a tourism information system, the matters of hard ware, software and information mediating system should be reviewed generally, this research is likely to provide a cyber tourism information system through internet as a way of cyber tours through multimedia technology and stereoscopic image technique using geographic information system centering on the networking system of tourism information. Constructing 『cyber touristy city』 on internet, foster a new industry, to go balanced with a present tourism industry and experience a virtual reality, various theme tours create high profit to shrunken tourism industry. Remark : multimedia technology, stereoscopic image, geographic information system

In this paper, I analyzed the industrial system and agriculture system about safety between korea and australia. An agriculture which is one of the national security industry, has recognized the importance. International country have attention to the automatization of machine for the improvement of agriculture. However, because of modernization of agriculture, the rate of accurrence about agriculture accident has increased dramatically. Especially the rate of accurence of agricultural accident is higher than the other industrial accident in the developed country. Because of these reasons, developed country has efforted to the agriculture systemabout safety. Australia law for the safety system of agriculture is very well and the rate of accident in the self-management agriculture is included in the statistics of industrial but The rate of accident in self-management agriculture is very higher. Korea has many middle size factory to make new goods and factory accurre very many accident. Because Korea government research the theory and practical affairs for the industrial system about safety and health to protect industrial accident In future we have to try new method about Agriculture Safety of Korea.

The objectives of this research are to suggest the basic plans for earthquake data construction using data sharing platform, and to design the earthquake information contents based on stakeholder's needs. To strengthen the earthquake disaster response capacity, customized contents for public and local/central government use and specific sharing platform are developed. Finally, the step-by-step data sharing roadmap is suggested.

When the SC structure is partially applied to a nuclear power plant building, an RC-SC connection part is generated between the SC wall and the RC slabs or RC walls. When the RC-SC connection part is generated, the compressive failure of the concrete near RC-SC connection part may occur if the difference in flexural stiffness between the RC part and the RC-SC connection part is large. Also, from the viewpoint of constructability, it is expected that a anchoring system which fixes the SC wall is required if the SC wall is raised above the RC wall. In this study, construction method with connection improvement is proposed to solve the problems expected from the structural and construction aspects.

This study is a case of construction after bridge demolition due to the aging of bridges operating the railway. Due to the influence of the pier vibration on the railway, the influence of the railway line, the construction period, etc., the P.B.S technique was applied to the coping pile foundation. It was completed in 5 days per 1 bridge pier by the PBS method. Since it is constructed in the dry season (from October to April) without vibration and noise, it can be installed safely on the rail rail of the pier of the bridge .

Recent earthquakes in Gyeong-ju and Po-hang have raised concerns about the safety of nuclear power plant structures. In particular, there is a demand for a technique for detecting and evaluating the deterioration that occurs in the concrete which is inaccessible after curing. In this paper, we propose a method for evaluating the reliability of concrete detection equipment using ultrasound, as the ultrasonic tomography technique has been attracting much attention with the detection technique of the inside of concrete.

This study suggested the improved safety certification marking system on the types of the temporary equipment. By surveying and interviewing the related persons in the construction company, the manufacturing company, and the rental company, the safety certification marking system was analyzed. The results show that the efficient marking was analyzed to utilize a depressed engraving on the target equipment and material. For marked contents, a certification mark, an identification number, and the production year should be displayed and the manufacturer name could be selectively presented. However, the opinions of the certification mark position among the users and manufacturers did not come into the agreement.

우리나라의 경우 건설폐기물이 100톤 이상 발생하는 공공 건설공사의 발주기관은 의무적으로 건설공사와 폐기물 처리용역을 분리 발주해야 한다. 발주자는 발생원단위 자료를 이용, 위탁처리용역의 발주물량을 산출 후 이에 따라 폐기물 처리용역을 계약한다. 그러나 현재 가장 많이 사용되는 건설표준품셈은 다양한 유형의 공사와 건설폐기물 종류를 포함하지 못하고 일부 공사 및 폐기물에 대한 원단위만 제공되고 있기 때문에 현실에 맞는 건설폐기물 발생량 산정 예측에 어려움이 있다. 건설폐기물은 업종의 특성에 따라 발생되는 폐기물의 종류와 발생량에 차이가 있어, 업종별 특성이 반영되고 건축 구조･종류별로 구분된 발생원단위가 산정되어야 한다. 발생원단위는 건설 폐기물 배출자가 자체적으로 건설공사의 성상별 건설폐기물 배출량을 예측하고 그에 적합한 처리 방법 및 예산을 산정하는데 이용할 수 있고. 건설폐기물 관리 규제기관에서 배출자 신고 자료에 대한 검증에 있어 정확도를 판단할 수 있는 근거로 활용될 수 있다. 현 건설폐기물 통계조사는 올바로 시스템에 데이터를 입력하는 사업체를 대상으로 사업장 폐기물의 발생 및 처리현황을 조사하며, 별도로 추가･수집된 경제데이터를 반영한 항목별 원단위 발생량을 산정한다. 본 연구에서는 올바로 시스템 건설폐기물 경제데이터에 발생원단위 산정에 필요한 항목을 반영, 설정하는 과정을 진행하였다. 기존통계자료들과 건설공사 표준품셈 자료, 선행연구보고서 및 학술 논문 등을 조사, 검토하는 현황분석을 거치고 전문가들의 의견을 반영, 발생원단위 산정방안 개선안을 도출하였다. 본 연구에서는 완공된 공사를 대상으로 총 발생량과 경제데이터를 조사하며, 공사유형을 분류하여 공사 종목별 건설폐기물 발생량을 파악할 수 있도록 제시하였다. 또 공사 전 해체여부를 파악하여 재건축 및 신규공사 등 해체폐기물의 여부에 따른 건설폐기물 발생량 오차를 줄이도록 하였다. 위의 내용을 반영된 데이터를 이용, 발생원단위를 산정한다면, 기존의 산정방법보다 더 정확한 건설폐기물 발생량 예측이 가능하고, 실제 현장에서 유용하게 활용 될 것으로 생각된다.

The article presents an evaluation of geotechnical state on the project construction site and an evaluation of deep excavation impact on the current site development. It also provides an optimal design for the deep excavation, an impact analysis of horizontal shifts in the shoring of excavation, an assessment of bending moments in the shoring and the forces in thebracing structures. The numerical modeling was carried out for developing variants of the deep excavation as well as a preliminary assessment of the impact that the projectedunderground structure produces on the surrounding buildings and constructions. Some recommendations on choosing a reliable variant of the undergroundstructural arrangement and the engineering operational technology are suggested.

To minimize damage from disasters, various aspects of prevention, preparation, and response, etc. are being managed. A system that can share the identical disaster information based on prompt disaster management and prediction must be developed and constructed for integrated disaster management.

For reinforced soil slopes with anchors, additional slope reinforcement using anchors is highly difficult due to their interference with previously installed anchors. This case study presents the applicability of high pressure jet nail for the reinforcement of slopes where additional reinforcement is needed due to the loss of tensile force in the anchors.

This paper presents a study on the construction method of modular pier system using CFTs. Modular Pier System consist of various prefabricated modules and is constructed by assembling components. Research scop include development of standard modules for adjustable to various height, connection between modules, and test bed construction. For the evaluation of this systems’s performance, Many numerical and experimental studies were conducted. In this study, we develop rapid construction system for site application of modular pier.

This study carried out field test construction by slip-form method with on site concrete batch, The results show that slip form method is good at the Quality assurance and constructability of L tyoe curbs and gutters but it is difficult for Quality control.

건설현장은 작업자에 의해 다양한 종류의 수공구와 토목·건축자재가 사용된다. 사용한 장비와 자재의 일부는 작업장에 방치된다. 이처럼 작업장에 방치된 장비와 자재들은 작업자들의 이동을 방해하거나 안전사고를 유발하는 원인이 된다. 특히, 작업자들이 정리정돈이 되지 않은 작업장을 이동하는 경우, 흔히 나타나는 아차사고의 유형은 장애물에 발이 걸리거나 미끄러지는 사고이다. 이러한 아차사고는 순간적으로 발생되고, 그 빈도가 높아 인력에 의존하여 상시 모니터링하는 데는 어려움이 있다. 근본적으로 건설현장에서 발생되는 특정 아차사고유형을 효과적으로 측정하기 위한 개념 또한 정립되어 있지 않은 실정이다. 본 연구는 기존의 아차사고라는 개념에 가속도를 적용하여 측정이 가능하게 한다. 대중화된 스마트폰의 가속도센서를 사용하여 작업자의 보행 중에 발생되는 아차사고 정보를 탐지하는 방법을 제시한다.