• Korean Journal of Construction Engineering and Management
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• v.13 no.5
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• pp.135-143
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• 2012

Constructing super-tall buildings is significantly different from constructing general ones in every technological and managerial aspects. Especially lift-car operations planning and management is one of core parts among various management techniques required during the course of the whole construction process of the super-tall buildings because vertical movements of physical resources enormously affect the efficiency of the construction processes. However, discrepancy between lifting plans and actual lifting operations causes serious efficiency problems. As an effort to solve the problem, this research suggests an improved method of estimating resource-based lifting load. The computing model developed as a result of this research facilitates more accurate computation of the total operation time and the maximum lifting capacity of the lift-cars. Further, this research can be developed as a decision support system for the total lift-car operations management.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.593-596
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• 2006

Productivity is the most important factor directly link to success and failure of a work in construction industry. To evaluate this productivity, simulation technique is verified as a fine inspection tool through various experiment reports. On this project, we have proved the part of improvement on productivity using this simulation technique, applied to this field sites. We have used CYCLONE, which is the most appropriate simulation technique on this project. As a result of Simulation analysis, it has been confirmed that the productivity was enhanced due to the advancement of equipment, hence the reduction of air is being effected.

• The Safety technology
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• no.109
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• pp.22-25
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• 2007

• The Safety technology
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• no.110
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• pp.22-25
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• 2007

• The Safety technology
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• no.108
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• pp.18-22
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• 2006

• Journal of the Korea Construction Safety Engineering Association
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• s.39
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• pp.86-99
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• 2006

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2002.11a
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• pp.19-27
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• 2002

최근 경제구조가 고도화되고 생활수준이 향상됨에 따라 사회간접자본시설 및 각종 용도의 건축물에 대한 요구가 높으며, 특히 고층건물 건축시에 사용되는 리프트카의 수요 또한 증가되고 있다. 일반적으로 기계구조물은 사용기간동안 절대적 안전성을 확보하기 위하여 설계되고 있으나 실제 건설 현장에서 사용중인 피니언축에 균열이 발견되고 있으며 이로 인하여 피니언축 수리보수 기간동안의 공사중지로 공기지연 뿐만 아니라 리프트카 추락으로 인한 인명사고가 발생하는 등 그 위험성이 매우 높다. 이에 따라 각종 구조물, 설비 및 기기의 안전진단을 통한 유지보수가 중요시되고, 결함 검출의 정량화에 대한 연구, 기술 개발이 강력히 요구되고 있다.(중략)

• Proceedings of the Korean Institute of Building Construction Conference
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• 2016.05a
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• pp.160-161
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• 2016

In tall building construction, lift car for worker lifting is a critical factor for construction productivity. To reduce worker lifting time, existing researches have been conducted on lift car planning. While, research on lift car operation is insufficient. For the efficient reduction of worker lifting time, lift car operation control is needed with lift car planning. Therefore, this research suggests operation control model of lift car to reduce worker lifting time. According to the result of a model test, the operation control model contributes to reasonable reduction of worker lifting time.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2013.05a
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• pp.171-172
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• 2013

An operation planning of lift car is crucial in tall building construction especially it's arrangement plans, because it is related with transportation distance of finishing materials affecting construction productivity. Since tall building construction, composed of complicating and huge plane have complex traffic lines of finishing materials, to determine the position of lift car empirically or intuitively has limits. Therefore this paper suggest an optimum layout model of lift car minimizing the transportation distance both at site-level and floor-level using Graph theory and Dijkstra algorithm.

• Korean Journal of Construction Engineering and Management
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• v.14 no.5
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• pp.153-163
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• 2013

As recent buildings have been more higher and larger, construction vertical lifting planning and operation is a key factor for successful project in tall building. Although many studies have been trying to set up a construction lifting planning system at early stage, there's not existing a control real-time lift operation control system with respect to during construction stage. Therefore, In this study, we use the sensor device to collect the lift operating data for improvement of lift operation efficiency and develope optimum lift operating system which can perform real-time analysis. Finally, we verify the efficiency of proposed system through comparison between realtime operating data and simulated data using proposing system. In this paper, the proposed system show more efficient moving line compared with previous system. This can contribute to development of unmanned lift system.