• 한국산학기술학회논문지
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• 제17권7호
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• pp.92-102
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• 2016

본 연구는 국내 외 가설기자재 관련 제도 및 기준 등을 비교 분석하여 가설기자재 안전인증제도 개선방안을 제시하며 건설 산업에서 사용 중인 가설기자재의 안전성을 확보하고자 한다. 현재 사용되는 가설기자재 안전인증제도 이행실태를 파악하기 위하여 생산 임대 사용의 가설기자재 관련 종사자에 대해 인터넷 설문조사 및 현장방문 인터뷰를 실시하여 통계분석을 수행하고 안전인증제도 실태조사 및 개선방안을 제시하였다. 안전인증제도는 2009년부터 시행되고 있지만 한국산업안전보건공단의 '건설중대재해 사례와 대책'을 확인하면 건설재해는 매년 증가하는 추세이다. 가설기자재 관련 종사자의 안전인증품목 적절성에 대한 응답은 '예(36%)', '아니오(30%)', '잘 모르겠음(35%)'으로 현행 안전인증제도 적합성에 대한 긍정적인 응답률이 절반에도 미치지 못하는 것을 알 수 있다. 현재의 가설기자재 안전인증제도는 건설 환경의 변화를 따라가지 못하고 있다는 의견이 많았다. 또한 국외 가설기자재 및 신소재 신제품에 대한 인증 방안 모색과 재사용가설기자재 자율등록제 제도 보완 및 안전성 증대 방안이 필요할 것으로 나타난다. 본 연구를 통하여 현행 안전인증제도의 인증대상 품목, 인증규격의 현실 적합성 및 인증방법 등을 검토한 후 안전인증제도 개선방향을 제시 하였다.

• 인터넷정보학회논문지
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• 제25권2호
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• pp.11-19
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• 2024

This paper was studied abouta technology for detecting damage to temporary works equipment used in construction sites with explainable artificial intelligence (XAI). Temporary works equipment is mostly composed of steel or aluminum, and it is reused several times due to the characters of the materials in temporary works equipment. However, it sometimes causes accidents at construction sites by using low or decreased quality of temporary works equipment because the regulation and restriction of reuse in them is not strict. Currently, safety rules such as related government laws, standards, and regulations for quality control of temporary works equipment have not been established. Additionally, the inspection results were often different according to the inspector's level of training. To overcome these limitations, a method based with AI and image processing technology was developed. In addition, it was devised by applying explainableartificial intelligence (XAI) technology so that the inspector makes more exact decision with resultsin damage detect with image analysis by the XAI which is a developed AI model for analysis of temporary works equipment. In the experiments, temporary works equipment was photographed with a 4k-quality camera, and the learned artificial intelligence model was trained with 610 labelingdata, and the accuracy was tested by analyzing the image recording data of temporary works equipment. As a result, the accuracy of damage detect by the XAI was 95.0% for the training dataset, 92.0% for the validation dataset, and 90.0% for the test dataset. This was shown aboutthe reliability of the performance of the developed artificial intelligence. It was verified for usability of explainable artificial intelligence to detect damage in temporary works equipment by the experiments. However, to improve the level of commercial software, the XAI need to be trained more by real data set and the ability to detect damage has to be kept or increased when the real data set is applied.

• 한국건설관리학회논문집
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• 제3권1호
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• pp.74-82
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• 2002

가설기자재 성능검정제도는 불량 가설기자재의 유통을 방지하기 위해 일정성능 이상의 제품만 제조하도록 형식 승인해 주는 것으로 제품의 사전검정을 통한 승인을 받아야만 시판할 수 있는 사전심사제도이다. 그러나 현행 형식검정방식은 제출된 시제품에 대한 검정을 통해서 동일한 형식의 제품 전체를 합격처리하고 있으며, 검정 합격 제품에 대한 유효기간이 없어 한번 검정에 합격한 제품에 대한 성능의 지속적인 유지$\cdot$관리가 어려워 불량 가설기자재로 인한 안전사고가 줄어들지 않고 있으며, 아직도 미검정제품 또는 성능검정 불합격 제품이 유통되고 있는 실정이다. 따라서 본 연구에서는 국내 가설기자재 사후관리제도와 선진외국의 관련제도와의 비교$\cdot$분석을 통해 현행 성능검정 합격 제품에 대한 사후관리의 문제점을 분석하고, 그 개선방안을 제안함으로써 가설기자재로 인한 재해발생을 저감시키고, 불량 가설기자재의 유통을 방지하고자 한다.

• 한국안전학회지
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• 제34권5호
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• pp.63-71
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• 2019

Work Guideline of Construction Quality Management was revised in July 2017, and it has changed the perception of scaffolding in South Korea. The on site investigation and survey was performed on manufacturers, leasing companies, and quality inspection agencies regarding the compliance with the guideline for the scaffolding and the related components brought to the site. Moreover, the related guidelines and identified unsatisfactory quality management items were analyzed by each subject. As a result, the major factors that cause the problems were reasonably deducted. The related regulations to prohibit the delivery of faulty scaffolding components to the construction site in order to secure the safety of the temporary structure was suggested.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.195-196
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• 2014

Unlike general construction works, bridge construction is mostly done in a high place. The conventional deck form of bridge is installed between precast concrete girders using sleepers, bridging joints and plywoods, and after concrete is poured to the deck, the form materials are removed at high altitudes. When removing the form, it may be dropped on ground, damaging the materials and resulting in economic loss. In addition, safety accidents are likely as the works are performed in a high place, and as the manpower increases, the cost increases. Also, it is difficult to install and remove temporary equipment. Therefore, it is required to develop a system form that allows easier and quicker installation and removal by unskilled workers and ensures safety of workers. In this regard, the study is intended to analyze requirements for the system form for pouring concrete to bridge decks, which can be easily installed and removed. The study result will be used as basic information for development of the system form for pouring concrete to bridge decks.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2001년도 학술대회지
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• pp.531-534
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• 2001

프로젝트 초기단계에 공기산정이 적절히 이루어져야만 프로젝트 진행과정에서 인력, 자재, 장비 등을 효율적으로 이용할 수 있으며 자금을 적절하게 배분할 수 있다. 그러나 아직 국내에서는 기준으로 삼을 만한 공기산정 기준이 없는 실정이다. 본 연구에서는 현재의 불명확한 공기산정방식을 개선함으로써 프로젝트 초기단계에서 적정공기를 예측하고 타당한 공정계획을 수립할 수 있도록 합리적이고 체계적인 공기 산정기준을 제시하고자 한다. 이를 위하여 본 연구에서는 기존 산정기준의 비교 분석을 통하여 개선방향을 도출하고, 현장기술자들과의 면담조사, 현장실험, 기존 연구자료 등을 활용하여 적정공기 산정기준을 제시하였다.

• International Journal of Internet, Broadcasting and Communication
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• 제11권1호
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• pp.27-38
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• 2019

Sensors collect information for Internet of Things (IoT)-based services. However, indoor construction sites have a poor communication environment and many interfering elements that make it difficult to collect sensor information. In this study, a network was constructed between a Bluetooth Low Energy (BLE)-based IoT device based on a serverless IoT framework and a router. This experimental environment was applied to large- and small-scale indoor construction sites. Experiments were performed to test the communication performance of BLE-based IoT devices and routers at indoor construction sites. An analysis of the received signal strength indication (RSSI) graph patterns collected from the communication between the BLE-based IoT devices and routers for different testbed site situation revealed areas with good communication performance and poor communication performance due to interfering factors. The results confirmed that structural components of the building as well as the materials, equipment, and temporary facilities used in indoor construction interfere with the communication performance. Construction project managers will require improved technical knowledge of IoT, such as optimizing the router placement and matching communication between the router and workers, to improve the communication performance for large-scale indoor construction.

• 한국안전학회지
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• 제13권4호
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• pp.221-229
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• 1998

This study, with a view point to prevent accidents arising from steel structure, construction process, has taken an approach of reviewing related materials and construction safety guidelines, conducting questionnaire surveys and on field surveys. This study has also analyzed and classified accident cases and disclosed elements concerned with those accidents. A comparative analysis of the disclosed elements against the statutory provisions regarding industrial safety and it showed that strict observance of safety rules of the accident prevention measures in industrial safety standards will result in a decrease in accidents. It is concluded, however, that additional accident prevention measures, as suggested below, should be implemented for performing of more practical and positive accident prevention. 1) Thorough review and preparation at pre-working stage at sites : Such elements of fall preventing facilely as supporting ropes and steel fabrications for safety guard rails should be initially reflected on detailed drawings and shop drawings so that they can be installed in advance at fabricating plants. 2) Sets of steel frame stairs for work platform should be installed or secured with priority and temporary installation of such prefabricated platform as scaffolds should be installed in advance with those platform attached to the frame members on the ground whenever possible before they are lifted. 3) A decrease in the rate of accident by more than 10% on Tuesdays and Thursdays, has been shown from the accident analysis so schedule of construction process should consider possible weekday of high risk of accidents such as Tuesday and Thursday. 4) An array of systemized safety activities should be adopted, such as legal installation of safety facilities based on advance safety management plan, maintenance of safety for machinery and construction equipment, and strict compliance of safety rules by workers.