• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.957-960
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• 2007

The construction information used in the design and construction phases are being gradually changed by 3D objects based on virtual reality (VR). This study developed an algorithm and computerized system to visualize layer object simulation that can be used in the pre-design phase. Layer object simulation enables designer to review expecting problems, which can reappear in real construction site, by building construction structures in a VR system. This function can be used as an important tool of virtual construction system.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.11a
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• pp.85-86
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• 2022

In this study, a simulation using Company A's COMSOL heat flow program was used to analyze the thermal diffusion simulation according to the depth of the high-temperature exposed cement paste. As a result of the analysis, it showed a similar relationship with the measured temperature as of 180 minutes.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.11a
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• pp.259-260
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• 2023

This study aims to build VR using BIM at our actual site, simulate it in a realistic background, and simulate new safety-related technologies being developed by our company rather than safety education contents to review optimal use plans for each field type so that the new technology can be effectively applied in the field.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.187-192
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• 2001

High-Rise Building Construction Project which has high uncertainty and complexity, causes lots of problems under construction. In particular, the integration between design phase and construction phase highly affects a construction project in terms of cost and time. To possibly make the flexible response and preliminary verification against the construction planning problems in high rise building project, this paper proposes the Engineering-Construction Management System based on 4D CAD that put the time factor together with 3D CAD. The usefulness of this system has been verified through the actual project. It could helps the reducing trials and errors during construction phase by catching the factors on problems of project. Ultimately it will allow users to save project cost and duration by field application.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2007.04a
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• pp.119-122
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• 2007

The purpose of this study is to propose development of Schedule based Architectural Construction Simulation System. In this study (or paper), It analyzes the simulation system concept and its characteristics, and analyze the main functions simulation system and the range of functions which are already used currently. Therefore, It could find the limit of the present simulation system, and propose more effective solutions to develop Schedule based Architectural Construction Simulation System.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.107-108
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• 2020

There is a need to analyze various factors in evacuation safety assessment of building in fire. In the current performance based design, evacuation safety assessment in case of fire is being conducted through the simulation as FDS and Pathfinder. However, the location and size of the door, the location of evacuation in the event of a fire are not considered when design. Accordingly, it is difficult to determine the worst case scenario considering the actual fire. Therefore in this study, in this study, we will propose an appropriate evaluation plan through simulation considering the worst-case scenario that may occur in case of fire.

• Proceedings of the KIEE Conference
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• 1999.07c
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• pp.1347-1350
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• 1999

접지는 최근까지 대형 변전소를 제외한 대부분의 분야에서 정확한 현장 분석 없이 단순히 접지저항만을 계산하여 시공하고 있다. 본 논문에서는 접지 설계에 필수적인 시공 현장의 대지저항률을 실측하여 컴퓨터 시뮬레이션을 통해 지질특성을 분석한 후, 3가지 방식의 접지시스템을 현장에 맞게 설계 시공하였다. 각각의 접지 시스템의 시공은 동일한 장소에서 이루어 졌으며, 시공된 각각의 접지시스템들의 결과를 실측하여 접지 설계에 따른 시공 성능을 확인하였으며, 접지시스템들의 성능과 특성을 상호 비교 분석함으로써 현장에 가장 적합한 접지시스템을 제안하였다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.11 no.4
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• pp.373-385
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• 2009

A new indexing methodology so called KTH-index was developed to quantitatively evaluate a potential level for tunnel collapse hazard, which has been successfully applied to tunnel construction sites to date. In this study, an attempt is made to apply this methodology for validating an outcome of tunnel design by checking the variation of KTH-index along longitudinal tunnel section. In this KTH-index simulation, it is the most important to determine the input factors reasonably. The design factor and construction condition are set up based on the designed outcome. Uncertain ground conditions are arranged based on borehole test and electro-resistivity survey data. Two scenarios for ground conditions, best and worst scenarios, are set up. From this simulation, it is shown that this methodology could be successfully applied for providing quantitative validity of a tunnel design and also potential hazard factors which should be carefully monitored in construction stage. The hazard factors would affect sensitively the hazard level of the tunnel site under consideration.

• Korean Journal of Construction Engineering and Management
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• v.23 no.6
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• pp.21-29
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• 2022

Productivity estimation of construction operations is crucial to successful project delivery. Especially in the preconstruction phase, the adequacy and effectiveness of plans directly affect the actual performance of operations. Currently, productivity estimation is conducted by referring to existing references such as the Construction Standard Production Rate. However, it is difficult to promptly apply changing conditions of operations when using such references. Moreover, it is difficult to deduce the optimal combination of construction machinery for the given condition. This paper presents a simple simulation model that can be used to generate productivity data that considers site conditions and construction equipment combination. The suggested method is expected to be used as a decision making assisting tool for practitioners who rely on estimations using the Construction Standard Production Rate when establishing construction plans using heavy machinery such as backhoes, loaders and dumptrucks.

• Explosives and Blasting
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• v.13 no.1
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• pp.11-19
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• 1995

발파에 의한 구조물해체기술은 구미를 중심으로 한 많은 실적을 바탕으로 하고, 이에 따른 경험이 뒷받침된 기술이라 말할 수 있다. 일본에 있어서, 본 기술을 합리적으로 안전하고, 확실한 해체공법 의 하나로 보급시키기 위해서는 구축물의 붕괴설계기술과 설계대로 붕괴시키는 시공기술이 필요 불가결 하다. 본보고서는 빌딩 등 콘크리트 구조물의 폭파해체시에 있어서 구출물 붕괴 시뮬레이션 기술에 관하여, 문헌 등에 의한 조사를 중심으로 기술의 현상과 동향 및 금후의 전망에 대하여 언급하였다. 그 결과 붕괴시의 시뮬레이션 수법으로서, 기능이 확장된 개별요소법 또는 불연속변형법의 적용가능성이 있음을 알게 되었다.