Bridges in Korea

Bridges in Korea

- Long Span Bridges-

Heungbae “Harry” Gil

Korea Expressway Corporation

Email : hgil@ex.co.kr

Contents

Road Networks in KOREA

Korea Expressway Corporation

Constructed Long Span Bridges

Under-construction Long Span Bridges

Road Networks & KEC

3

Korean Peninsula

Complicated Coastlines

7

216

258

109

1979 463

62

25

62 3,174 No. of Islands

Lands of Islands

104,702km

99,620km²

49 million

17 million

KOREA Overview

※ MLTM : Ministry of Land, Transport & Maritime Affairs

Road Network in KOREA

Name of Route Authority Length (km)

Expressway KEC(3,632km) / Others(281km) 3,913

National Highway MLTM 13,905

Special • Metropolitan

City Road

Special Metropolitan

City Government 18,517

Provincial Road Provincial Government 18,193

City • County Road City / County Government 50,174

Total Length of Road Network 104,702

(as of 2011)

7

Road Bridges

Routes Numbers Length (km)

Expressway 8,140 1,069

National Highway 6,610 662

Special • Metropolitan

City Road 1,045 287

Provincial Road 4,614 296

City • County Road 7,692 407

Total 2,721

(as of 2011)

28,152

8

Road Bridges

Length All Roads Expressway

100M ~ 500M 6,138 2,428

500M ~ 1,000M 566 300

≥ 1,000M 160 68

Total 8,140

(as of 2011)

28,152

≤ 100M 21,288 5,344

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Research &

Development

Installation &

Management of

Subsidiary Facilities

Construction,

Maintenance & Operation of Expressway

Development of Areas

Adjacent to

Expressways

Established in 1969

Korea Expressway Corporation

3,913 km Present

General Information – 7 x 9 Master Plan

6,160 km

7 corridors north and south

9 corridors east and west

Within 30-minutes access to

expressways nationwide

Increase alternative routes

2020

Long Span Bridges before 2000s

Historical Bridges

12

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Bridges in 1970 ~ 1980

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Namhae Bridge (1973)

Suspension Bridge

Total Length: 606M Main span: 404M

15

Jindo Bridge (1984)

Cable Stayed Bridge

Total Length: 484M

Main Span: 344M

Steel Box Girder

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Dolsan Bridge (1984)

Cable Stayed Bridge

Total Span Length: 450M

Main Span: 279.5M

Steel Box Girder

Bridges in 1990s

Large number of sea-crossing bridges for the development of islands

Securing of self-reliant technology for BCM and steel box bridges

Design focused essentially on functionality and economy

Narodo bridge (1994) Onnam Bridge (1996) Changseon bridge (1995)

Yaksan bridge (1999) Jodo Br. (1997) Tongyoung bridge (1998)

Long Span Bridges after 2000s

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Long Span Bridges after 2000s

Strong demands for road infrastructure

Early 2000s

Conservatism in designs & constructions

Corporation with foreign companies & engineers

Beginning of golden era for long span bridges in Korea

Initiation of National Highway 77 construction project

Late 2000s

EPC turnkey construction contracts

Partial cooperation & dependence with foreign companies

20

Seohae Bridge (2000)

First composite cable-stayed bridge in Korea

Span length: 990M (60+200+470+200+60)

Girder : Stiffened steel girder with precast slab

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Foundation Concrete Pylons

Key Sag Stay Cable Works

Girder Erection

Seohae Bridge (2000)

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Self-anchored suspension bridge with three-

dimensional main cable profile

Total length: 550M(125+300+125)

Road-rail bridge, Double-deck

Yongjong Bridge (2000)

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Cable work on temp. bents

Yongjong Bridge (2000)

AS equipments

AS on the main span 3D cable arrangements

25

Earth-anchored suspension bridge

Total length: 900M (200+500+200)

Girder type: Stiffened steel truss girders, double-deck

Gwangan Bridge (2002)

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Gwangan Bridge (2002)

Landmark of Busan City

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2nd Jindo Bridge (2005)

Needs for the new bridge

Increased traffic demands

Lack of load bearing capacity

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2nd Jindo Bridge (2005)

Twin cable-stayed bridges

Length:492.5M (74.25+344+74.25)

Steel Box Girder

Wind dynamic stability during

construction: TMD

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National Highway 77 Project

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Sorok Bridge (2008)

Mono cable self-anchored suspension bridge

Total length: 470M(110+250+110)

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Incheon Bridge (2009)

Total length: 18.25km

Length of CSB: 80+260+800+260+80 M

Fast-track method

PPP Projects

32

Stiffening Girder Erection

Steel box girder

HSB600 steel plates

(Y.S.: 450MPa, T.S.: 600MPa)

Incheon Bridge (2009)

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PWS(Parallel Wire Strand) cable

• Ultimate strength: 1770MPa

• Diameter of wire : 7 mm

Incheon Bridge (2009)

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Incheon Bridge (2009)

Construction: JUN. 2005 – OCT. 2009 (52 Months)

Longest cable-stayed bridge in Korea

35

Geogum Bridge (2011)

Cable-stayed bridge in a semi-harp arrangement

Total length: 1,116M(120+198+ 480+198+120)

Bundles of 7 cables

Double-deck Warren truss

36

Geogum Bridge (2011)

Nickname: Golden Sunlight Bridge

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Mokpo Bridge (2012)

Red-crowned Crane

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Steel box girder cable-stayed bridge

Total length:900M (200+500+200)

3 way stay cable arrangement

Center span: double plane

Side spans: single plane

Mokpo Bridge (2012)

Three-span suspension bridge

Total length: 2,260M(357.5+1545+357.5)

4th longest bridge in the world

Yi Sun-sin Bridge (2012)

Admiral Yi Sun-sin

(Born in 1545)

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Highest concrete tower in the world for suspension bridges (272m)

Slip form construction

Construction period of pylon: 11 Months ( Great Belt Bridge: 254m, 30 Months)

Yi Sun-sin Bridge (2012)

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High-strength steel cable: 1,860MPa (Kiswire)

Cable erection: newly-developed AS system

Yi Sun-sin Bridge (2012)

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Twin-Box Girder

Floating Girder System

Yi Sun-sin Bridge (2012)

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Yi Sun-sin Bridge (2012)

Temporary Opening Date:

May 10, 2012

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Typical choice:

- Balanced Cantilever PSC Box Girder Bridges

Bridges for 100~200M ??

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New Alternative:

Extradosed* Bridges

* a cross between a girder bridge & a cable-stayed bridge

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2nd Pyung-Yeo Bridge (2007)

First Extradosed Bridge in Korea

Length : 550M (3@50+65+120+65)

Pier Height : 10.5M

47

Length: 796.6M (85.35+5@125+85.25)

Pier Height: 8.85M

Geumga Bridge (2008)

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Approach to Inchon Bridge (2009)

Length: 310M

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Hag-Na-Rae Bridge (2012)

Length: 740M(100+3@180+100)

Pier Height : 26m

Longest span ED bridge in Korea

Under-construction Long Span Bridges

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Total length : 400M

Main span length : 400M

Stiffening girder : Steel Edge Girder

World’s Longest Single Pylon Suspension Bridge

Dandeung Bridge (2013)

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Dandeung Bridge (2013)

Cable strength : 1,960MPa

AS (Air Spinning) erection method

54

Sepoong Bridge (2014)

Bridge type : 6-span Cable-stayed Bridge

Total length : 725M (R=2000M)

Main span length : 220M

Stiffening girder : PSC Box Girder with Strut

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Ulsan Bridge (2015)

PPP projects

Single span(L=1,150M) suspension bridge

Cable strength: 1,960MPa

PPWS erection method

Tunnel type anchorage(AN2)

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Ulsan Bridge (2015)

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2nd Namhae Bridge (2016)

3 Dimensional Cable Suspension Bridge With Inclined Pylons

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Pylon at Land :

Prevention of Marine Pollution

Inclined Pylon : Minimization of

Tension on Main Cable

3D Arrangement of Main Cable : Securing Wind Resistance from Horizontal force of Hanger

Total length : 990.0M

Main span length : 890M

Pylon height : 148.5M

Inclined angle of pylon : 8.0°

Cable strength : 1,960MPa

Cable construction method

: Low Tension Air Spinning

2nd Namhae Bridge (2016)

New Millennium Bridge 1 (2019)

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Total length: 1,004M(67+120+120+510+120+67)

PSC Box Girder + Steel Box Girder

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New Millennium Bridge 2 (2019)

Bridge type : Four-span Suspension Bridge

Total length : 1,750M

Main span length : 650M

Cable erection: PPWS (1,960MPa)

Conclusion

Stiff competitions

Uniqueness

Bold Designs

Technology Developments

Super Long Bridge R&DB Projects

61

Thanks to…..

DAELIM E&C

HYUNDAI E&C

GS E&C

SK E&C

PEC

YOOSHIN EC

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GS E&C

Thank You Very Much!