• 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.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.827-831
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• 2007

For applying simulation to the construction process, much effort is needed to collect input data and to build the model including the characteristics of site. This study introduces the methodology to collect operation data of construction equipment and build the simulation model, then verifies the model with the operation data. In addition, this study identifies main factors to determine the cycle time of the muck hauling system and offers reasonable decision making data using the simulation based planning of construction equipment operation.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.1D
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• pp.83-91
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• 2008

This study establishes the model to estimate a work time and a machine equipment combination in a NATM tunnel. Also it includes the increasing rate of haulage distance in the model for to make near to reality model. A simulation model focuses on the mucking process which affects the work effectiveness very highly to plan of machine use in tunneling operation. With the analysis of work effectiveness through tunnel simulation model, it is defined the problem of planning phase. Also it shows the optimal working time and efficiency of machine used through change the number of dump truck and haulage distance.

• Korean Journal of Construction Engineering and Management
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• v.8 no.1 s.35
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• pp.141-149
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• 2007

Simulation has considerable potential as the tool of construction management, but in the case of domestic, it is at an early stage applying simulation to micro-process assesment. For applying simulation to the construction process, much effort is needed to collect input data and to build the model including the characteristics of site. This study introduces the methodology to collect operation data of construction equipment and build the simulation model, then verifies the model with the operation data. In addition, this study identifies main factors to determine the cycle time of the muck hauling system so that it suggests the method of construction process planning through operation and combination of construction equipments.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.574-578
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• 2006

Simulation has considerable potential as the tool of construction management, but in the case of domestic, it is at an early stage applying simulation to micro-process assesment. For applying simulation to the construction process, much effort is needed to collect input data and to build the model including the characteristics of the fields. This study introduces the methodology to build the simulation model, then verifies the model with the operation data.

• Journal of Korean Tunnelling and Underground Space Association
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• v.18 no.6
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• pp.511-524
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• 2016

Since a room-and-pillar underground structure is characterized by its grid-type array of room and pillar, its economical efficiency can be governed by excavation sequence. In this study, the construction period by the drill-and-blast method as a excavation method for a room-and-pillar underground structure was examined. In addition, the parallel excavation sequence was considered as the main sequence of a room-and-pillar underground structure. Sequences of mucking and support installation were derived to estimate the total excavation cycle by taking the case of a road tunnel into consideration. From the excavation cycle of room-and-pillar underground structure, the relationship between available maximum and minimum numbers of jumbo drill machines depending on the number of faces in operation was suggested.

• Journal of Korean Tunnelling and Underground Space Association
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• v.24 no.6
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• pp.637-658
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• 2022

TBM tunnel is simple with the iterative process of excavating the ground, building a segment ring-build, and backfilling. Drill & Blast, a conventional tunnel construction method, is more complicated than the TBM tunnel and has some restrictions because it repeats the inspection, drilling, charging, blasting, ventilation, muck treatment, and installation of support materials. However, the preparation work for excavation requires time and cost based on a very detailed plan compared to Drill & Blasting, which reinforces the ground and forms a tunnel after the formation of tunnel portal. This is because the TBM equipment for excavating the target ground determines the success or failure of the construction. If the TBM, an expensive order-made equipment, is incorrectly configured at the assembly stage, it becomes difficult to excavate from the initial stage as well as the main excavation stage. When the assembled shield TBM equipment is dismantled again, and a situation of re-assembly occurs, it is difficult throughout the construction period due to economic loss as well as time. Therefore, in this study, the layout and plan of the site and the assembly process for each major part of the TBM equipment were reviewed for the assembly of slurry shield TBM to construct the largest diameter road tunnel in domestic passing through the Han River and minimized interference with other processes and the efficiency of cutter head assembly and transport were analyzed and improved to suit the site conditions.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.4D
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• pp.661-670
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• 2006

The utilization of simulation has been limited in planning construction process because it is difficult to collect data and build a model using simulation method. This study collects construction operation data and analyzes the characteristics of its distribution. Through the statistical analysis on the empirical data, this study identifies Beta distribution functions is one of the most proper in duplicating the characteristics of construction equipment operation data into a computer simulation. The information obtained in this study can support preparing input data for another simulation.