Construction of Underpass Section in High Speed Railway ...

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