• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.407-408
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• 2017

최근 IoT, AI, Big-data 등 4차 산업혁명기술이 다양한 산업영역에 적용되고 있다. 건설산업에도 4차 산업혁명기술 도입을 위한 다양한 연구들이 진행되고 있으며, 토목 및 건축을 포함한 다양한 건설사업 초기단계에 적용되는 토공사의 자동화를 위한 연구가 국내외에서 활발히 진행되고 있다. 본 연구에서는 토공사 자동화를 위한 기초정보를 제공하기 위해 지반지형을 디지털화하고 이를 건설산업 초기 단계에 활용하기 위한 형태를 제시하고자 한다. 지반지형 디지털화를 위해서는 현장계측, 계측데이터 정합, 건설정보 입력, 분석단위 생성 등의 기능이 요구된다. 토공지형 디지털화 기술은 향후 토공사 자동화를 위한 건설장비군의 효율적 운영을 위해 활용될 수 있다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2011.04a
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• pp.375-378
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• 2011

건설공사에서 토공사가 차지하는 비중은 타공종에 비하여 높다. 즉 건설공사의 생산성을 향상시키기 위하여 토공사를 중점적으로 관리하는 일은 매우 중요하다고 할 수 있다. 그러나 현재의 토공 시스템은 굴삭 조종자와 현장 계획 관리자의 경험적 지식에만 의지하여 토공 계획을 수립하고 있는 실정이며, 또한 노동 집약적 토공작업의 한계를 벗어나지 못하는 현실로 인하여 토공사를 관리함에 어려움이 있다. 이러한 당면 과제를 극복하고자 BIM 기반의 토공 시스템에 대하여 소개하고자 한다. 본 논문에서는 굴삭 장비와 연계하는 토공 계획과 운영 자동화 시스템에 대하여 주로 다루게 된다. 굴삭 작업 계획 생성 시스템, 장비 조종 인터페이스, 웹 기반 Project Management Information System(PMIS)이 개발되는 과정에서 적용된 BIM 요소기술에 대하여 살펴본다.

• Magazine of korean Tunnelling and Underground Space Association
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• v.21 no.3
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• pp.55-59
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• 2019

• Construction Engineering and Management
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• v.21 no.3
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• pp.33-37
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• 2020

• KSCE Journal of Civil and Environmental Engineering Research
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• v.41 no.4
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• pp.429-439
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• 2021

In order to cope with the decrease of construction manpower caused by the aging population and to improve construction productivity, Japanese Ministry of Land, Infrastructure, Transport and Tourism has been promoting construction methodology using ICT (Information & Communication Technology) since 2016. The ministry has established and implemented new cost estimation standards, delivery systems, and government support policies to boost automated earthwork using ICT, and is expanding the types of automated construction methodology applied at the construction sites. To utilize ICT at construction sites in Korea, as in case of Japan, laws, systems, and policies should be readjusted first. By comparing the ICT-related systems and policies between Japan and Korea, this paper scrutinizes critical benchmarking factors. As a result, we have reached the conclusion that in order to promote ICT methodology at Korean construction sites, Korean government should establish ICT-related cost estimation standards, delivery systems, and economic support policies in advance.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.3
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• pp.1191-1202
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• 2013

The former researches on earthwork automation were mainly focused on GPS and sensor application, environment modelling, equipment path planning, work information management, and remote control etc. Recently, reducing $CO_2$ emission becomes one of main focuses for an automation research. In the case of earthwork operations, many kinds of construction machines or robots are involved, which can cause high level of $CO_2$ in a construction site. An effective earthwork plan and construction machine operation can both increase productivity and safety and decrease $CO_2$ emission level. In this research, some automation concepts for green earthworks are suggested such as a 3D construction site model, a 3D earthwork distribution based on two different earthwork methods, and an earthwork package construction method. A excel-based simulator is developed to generate the 3D earthwork distribution and to estimate the level of $CO_2$ emission for the given earthwork.

• Journal of the Korea Institute of Building Construction
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• v.10 no.4
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• pp.105-112
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• 2010

The demand for the development of automated construction equipments is gradually increasing to deal with the current problems of construction technology, such as a lack of experienced workers, the aging of engineers, safety issues, etc. In particular, earth work such as excavation is very machine-dependent, and there has been a great deal of research on the development of an intelligent excavator, which involves great safety concerns. Thus, the objective of this study is to develop the technology to enhance the safety of intelligent excavation systems by developing an omnidirectional object detection technology for the intelligent excavator and applying it to a user-friendly system. The existing literature was reviewed, and the function of various sensor technologies was investigated and analyzed. Then, the best laser sensor was selected for an experiment to determine its effectiveness. An omnidirectional object detection algorithm was developed for a user interface program, and this can be used as the fundamental technology for the development of a safety management system for an intelligent excavator.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.347-352
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• 2007

Recently, automated construction machines have been developed for technically solving construction industry problems such as labor, productivity, quality and the profit decrease. In domestic construction industry, a research for developing an intelligent excavation robot has been performed. The primary objective of this research is to analysis state-of-the art technologies in order to recognize local ground shape in real-time and compute soil volume of earth moving. This research analyzed five elemental technologies for 3D modeling of local ground shape and selected an optimal technology among the five technologies through using AHP method. It is anticipated that the optimal technology selected for 3D modeling of local ground shape can be effectively used to develop the intelligent excavation robot.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.184-192
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• 2008

Recently, one of the solutions for the problems of construction industry such as low productivity, lack of experts, insufficiency of manpower, high percentage of calamity and so forth, construction automation which let underdeveloped construction production system be a ultramodern technology is under research. Internal study of construction automation has been initiated since 1980s focusing on robotics and semi-automation for reduction of labor. Therefore development of construction robots is being concentrated with the high development of information technology and Intelligent Excavating System(IES) project had been launched by ministry of land, transportation, and maritime affairs as one way of construction technology revolution business. This study introduces the final goal and the research progress until second year of IES.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.6
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• pp.2551-2562
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• 2013

Since 2006, an Intelligent Excavation Robot which automatically performs the earth-work without operator has been developed in Korea. The technologies for automatically recognizing the terrain of work environment and detecting the objects such as obstacles or dump trucks are essential for its work quality and safety. In several countries, terrestrial 3D laser scanner and stereo vision camera have been used to model the local area around workspace of the automated construction equipment. However, these attempts have some problems that require high cost to make the sensor system or long processing time to eliminate the noise from 3D model outcome. The objectives of this study are to analyze the advantages of the existing 3D modeling sensors and to examine the applicability for practical use by using Analytic Hierarchical Process(AHP). In this study, 3D modeling quality and accuracy of modeling sensors were tested at the real earth-work environment.