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Construction of Underpass Section
in High Speed Railway Project
ICCBEI 2015, Tokyo Convention Hall, Japan
April 23, 2015
Department of Civil and Environmental Engineering,
Yonsei University, Seoul, Korea
ProfessorSang-Ho Lee
E-mail: [email protected]
JACIC Session
-1- ICCBEI 2015, April 23, 2015
1. Introduction
Field Introduction
• Construction of underpass tunnel for new high speed railway
• Cut & Cover method for elimination of existing piles
• Replacement of existing plies with load bearing girders and diaphragm walls
Load
bearing
girders
Diaphragm
walls
-2- ICCBEI 2015, April 23, 2015
1. Introduction
Construction Issues
Uncertain locations of
existing structures
& construction errors
Complicated false works
in limited space
-3- ICCBEI 2015, April 23, 2015
2. Implementation of BIM
3D & 4D Modeling
Virtual construction
Laser scanning & update models
Reporting & feed backs
Procedures
-4- ICCBEI 2015, April 23, 2015
2. Implementation of BIM
Periodic BIM conference
Eng.(Analysis)
BIM manager
BIM Modeler
Struct.Designer
H-QSE
Eng.BuilderConst.
Manager
Equipment Manager
-5- ICCBEI 2015, April 23, 2015
2. Implementation of BIM
Laser scanning and model update for accurate analysis
-6- ICCBEI 2015, April 23, 2015
2. Implementation of BIM
Check constructability for girder launching
Updating of 3D model with laser scan data
Laser scan data
Model based reviews
-7- ICCBEI 2015, April 23, 2015
2. Implementation of BIM
28 issues (clashes 7, construction sequence 8, insufficiency of construction plan 13)
Example of clashes
Model based reviews
-8- ICCBEI 2015, April 23, 2015
2. Implementation of BIM
Model based reviews
28 issues (clashes 7, construction sequence 8, insufficiency of construction plan 13)
Example of false construction sequence
Temporary
Facility
Construction
Stage 3
Excavation (D/W Breaking)
Temporary Facility Construction
Stage 4
Excavation
(D/W Breaking Wire Saw)
Temporary Facility Construction
Installation of Supported-girder
Installation of Hydraulic Jack
Pre-loading
Pile Cutting
First Concrete Pour
Stage 5
Excavation
Temporary Facility Construction
Stage 6
Excavation
Temporary Facility Construction
Stage 7
Excavation
Temporary Facility Construction
Tim
e-
Ste
p
-9- ICCBEI 2015, April 23, 2015
3. Virtual Construction
Development of Web-based Virtual Construction System
• Development of virtual site with the 3D model
• Definition of crane location based on capacity analysis
• Measurement of distance between load bearing girder segments and other structures
Risk indicator is displayed when beam contact stiffener
Outrigger center line.
Water channel
-10- ICCBEI 2015, April 23, 2015
3. Virtual Construction
4D construction sequencing
-11- ICCBEI 2015, April 23, 2015
3. Virtual Construction
Simulation for installation of load bearing girders
-12- ICCBEI 2015, April 23, 2015
3. Virtual Construction
Virtual simulation vs Actual activity
-13- ICCBEI 2015, April 23, 2015
4. Concluding Remarks
Return on Investment (ROI) in this field
• Return: 35,000 USD
(prevention of construction holding due to clashes and re-design)
• Investment: 27,000 USD
• ROI: 130%
BIM is a tool for construction risk hedge
• BIM does not provide directly cost saving item
• Return on BIM can be estimated with risk hedge
