• 한국재난정보학회 논문집
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• 제18권1호
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• pp.154-162
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• 2022

연구목적: 건설현장 안전관리를 인적 역량 중심에서 첨단기술인 AIoT와 Mobile 기술을 활용한 시스템 중심의 관리체계로의 전환을 위한 건설현장 안전관리 활성화 방안을 마련하고자 한다. 연구방법: AIoT와 Mobile 기술을 활용한 건설현장 안전관리 모니터링 시스템이 건설현장의 유효성에 대하여 공동주택현장의 골조공종에 종사하고 있는 작업자를 대상으로 가상휀스, 화재감시, 안전모 미착용 인식 3개의 알고리즘을 적용하여 실험을 실시 하였다. 연구결과: 실험대상 근로자는 215명, 가상휀스 침입은 7.61명으로 불안전 행동 발생율은 실험대상 인원 대비 3.5%, 화재감지는 0.16건으로 실험대상 대비 불안전 행동 발생율이 0.07% 나타났으며, 안전모 미착용 인지는 월 평균 안전모 미착용은 8.79명으로 실험대상 대비 불안전 행동 발생율 4.05% 나타났다. 결론: AIoT와 Mobile 기술을 활용한 건설현장 안전관리 모니터링 시스템이 건설현장에 유효한 영향을 미치는 것으로 나타났다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 춘계 학술발표회
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• pp.1433-1437
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• 2010

The deep excavation work in Korean downtown is almost excuted near by existing structures and utility lines because of the diminution of available yard for construction. So, it was required more and more that the accurate control of displacement on the earth retaining system for minimizing the popular complaint and the damage from constructional accident. Automatic monitoring system is adopted in fracture zone for real time monitoring. In addition, Face mapping is carried out on the face of fracture zone according to excavation sequence. As the result of automatic monitoring system and face mapping, we was able to take the necessary reinforcement and changing excavation method within suitable time. This paper is informed about a stability case on the deep rock excavation site with fracture zone in urban area by automatic monitoring system.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권11호
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• pp.3970-3990
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• 2021

In view of the problems of insufficient data collection and processing capability of multi-source heterogeneous equipment, and low visibility of equipment status at the ship block construction site. A data collection method for ship block construction equipment based on wireless sensor network (WSN) technology and a data processing method based on edge computing were proposed. Based on the Browser/Server (B/S) architecture and the OneNET platform, an online monitoring system for ship block construction equipment was designed and developed, which realized the visual online monitoring and management of the ship block construction equipment status. Not only that, the feasibility and reliability of the monitoring system were verified by using the intelligent tire frame system as the application object. The research of this project can lay the foundation for the ship block construction equipment management and the ship block intelligent construction, and ultimately improve the quality and efficiency of ship block construction.

• 한국지구물리탐사학회:학술대회논문집
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• 한국지구물리탐사학회 2003년도 Proceedings of the international symposium on the fusion technology
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• pp.170-175
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• 2003

Ground and rock mass considered in tunnelling have characteristics such as uncertainty, heterogeneity and structural complexity because they have been formed undergoing various geological events for a long period. So, it is difficult for engineers to predict behaviors of rock mass in tunneling. In the paper the authors describe the development of an integrated expert system prototype for site investigation, design and construction in tunnelling and introduce the case applying this system to the tunnel construction site under construction. Geostructure Research Group in Korea Institute of Construction Technology (KICT) has developed the system during the past 4 years. The system mainly consists of several modules which is related to the design, construction and management of tunnelling. The test site, Neung-dong tunnel is located in Ulsan, Korea. The geology map shows it may confront big fault zone whose width is over kilometres. With the networking system of ITIS, various information of face mapping, monitoring and other construction task can be transmitted into the database and GIS Server at real time. And necessary analyses can be carried out with the modules equipped in the system.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 봄 학술논문 발표대회
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• pp.202-203
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• 2020

Unlike price calculation by cost accounting, which categorizes costs into material costs, labor costs, and miscellaneous expenses to determine the construction budget price, construction cost calculation based on Construction Standard Unit Prices utilizes unit prices extracted from market prices of items from projects already completed to estimate costs of similar construction projects. Although unit price information is collected through construction site surveys to revise these construction standard unit prices every year, but due to the limitations of the site survey method, it is difficult to quickly implement the rapid changes in the construction methods and market prices. As such, an important issue that arose was the identification of work items whose prices need urgent revision. This study conducted research on factors that need to be considered when developing online survey system for monitoring construction site market prices. This study is expected to enhance convenience for users, and provide an efficient data collection and management system for administrators.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2003년도 봄 학술발표회 논문집
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• pp.781-788
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• 2003

It is an essential process to predict behaviors of ground and structure to seek economical efficiency and stability on the given environment. Predictions are conducted through analysis process of ground and structure. For these analyses, exact and quick acquisition of measuring data is required. But we face many difficulties in data acquisition stages due to the conditions of construction site. Therefore development of a powerful and effective monitoring system that can manage the integration of database and the implementation of measuring process in real time is strongly desired. This article shows an actual example of application of internet based monitoring system compared with the conventional monitoring system.

• Structural Monitoring and Maintenance
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• 제10권3호
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• pp.261-281
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• 2023

Magnetic flux sensors are commonly used in monitoring the cable force, but the application of the sensors in large diameter non-closed Galfan cables, as those adopted in Yueqing Gymnasium which is located in Yueqing City, Zhejiang Province, China and is the largest span hybrid space structure in the world, is seldom done in engineering. Based on the construction of Yueqing Gymnasium, this paper studies the cable tension monitoring using the magnetic flux method across two stages, namely, the pre-calibration stage before the cable leaves the rigging factory and the field tension formation stage of the cable system. In the pre-calibration stage in the cable factory, a series of 1:1 full-scale comparative tests were carried out to study the feasibility and relability of this kind of monitoring method, and the influence on the monitoring results of charging and discharging voltage, sensor location, cable diameter and fitting method were also studied. Some meaningful conclusions were obtained. On this basis, the real-time cable tension monitoring system of the structure based on the magnetic flux method is established. During the construction process, the monitoring results of the cables are in good agreement with the data of the on-site pressure gauge.The work of this paper will provide a useful reference for cable force monitoring in the construction process of long-span spatial structures.

• 한국해양환경ㆍ에너지학회지
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• 제8권2호
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• pp.53-59
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• 2005

연안환경요소를 효과적으로 모니터링하기 위하여 모델링 결과와 관측결과를 통합하여 제공하는 연안환경정보 제공 시스템이 개발되었다. 개발된 시스템은 실시간 관측 자료를 관리하기 위한 모니터링 모듈, 환경요소를 수치모의할 수 있는 모델링 모듈, 그리고 모니터링과 모델링된 결과를 그래픽으로 볼 수 있는 후처리 모듈로 구성되어 있다. 시스템 개발의 목적은 사용자가 쉽고, 편리하게 연안 환경요소에 대한 정보를 관찰할 수 있도록 하기 위한 것이다. 개발된 시스템을 활용하면, 연안환경요소에 대한 신속한 평가, 빠른 모니터링이 가능하여, 궁극적으로 환경오염과 자연재해로 인한 피해를 최소화할 수 있을 것이다.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.491-496
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• 2005

In this paper, the authors explained the overview of a method for detecting location of worker for development of a monitoring system for project progress management using RFID technology. Data is the RSSI (Receive Signal Strength Indication) from RFID tag attached to the worker installing a rolling shutter, and was obtained from antennas and RFID readers set around the construction site. Neural network was done using RSSI collected and the area where worker is performing a task, and an estimation model of the working area was prepared. The network had a range of the percentage of correctly classified from 62% to 92%. The authors suggested the method to make estimate by using integrated networks prepared in respect of RFID readers, and showed the percentage of correctly classified of 84.3%. According to the result, the authors confirmed the possibility of the monitoring system with RFID technology, and mentioned the factors necessary to develop for further practical use.

• 대한토목학회논문집
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• 제42권4호
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• pp.549-557
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• 2022

건설 현장, 특히 토목 분야 시공 프로젝트의 경우 다양한 요인에 따라 프로젝트 진척상황을 파악하고 공사/공정을 모니터링 하는데 어려움이 따른다. 본 연구에서는 건설 프로젝트, 특히 토목 시공 프로젝트의 생애주기 중 주요 과정 중 하나인 공사/공정관리 모니터링 단계에서의 무인비행장치의 활용가능성에 대하여 분석하고 그 방법에 대하여 고찰하고자 한다. 먼저, 본 연구에서 도출한 건설 현장의 특징을 극복하기 위하여 공사/공정관리 모니터링 과정에 대하여 먼저 분석을 수행하고, 현재 드론 기기의 특성에 맞는 활용 방법에 대하여 분석을 수행하였다. 이를 바탕으로 하여 토목 현장 관리를 위한 필수 데이터인 정사영상 및 포인트 클라우드 데이터를 취득하기 위한 시스템을 개발하였으며 시스템 적용가능성에 대한 분석을 수행하였다. 대표적인 토목 현장인 도로 프로젝트를 대상으로 테스트베드를 수행하여 무인비행장치의 현장 활용가능성에 대한 검토 역시 진행하였다. 테스트 베드 수행 결과 개발된 시스템의 건설 현장 관리 적용 가능성 및 실용성을 확인할 수 있었다. 향후 연구에서는 무인비행장치를 활용하여 취득하고 분석한 데이터가 실질적으로 시공/공정 관리 정보로서 활용될 수 있도록 기반을 마련될 수 있도록 제도적, 기술적 보완을 위한 연구가 요구된다.