Suspension Bridge Construction Equipment and Engineering Representative Technologies

Technology overview

We developed and applied main cable installation and cable reinforcement technologies ― the core factor technologies for suspension bridge ― to secure the independence of suspension bridge construction technology. With the development of the technology, we consolidate our competitiveness in the global suspension bridge construction market through leading domestic suspensionbridge technology and by advancing our technological capabilities comparable to those of global top-class companies.

Effects

Cost savings and buildability improvement

Applied projects

Korea’s longest suspension bridge, Yi Sun-Sin Bridge: main cable air spinning, cable configuration management, and reinforcement technologies
Korea’s first short span suspension bridge, Palyoung Bridge: main cable air spinning, cable configuration management, and reinforcement technologies
World’s longest 1-tower suspension bridge, Gogunsan Bridge: main cable air spinning, reinforcement construction, and 3D cable configuration management
Korea’s first 3-tower suspension bridge, Cheonsa Bridge: main cable PPWS construction and 3-tower suspension bridge reinforcement technologies
World’s longest suspension bridge, 1915 Çanakkale Bridge: steel tower construction and configuration management

Intellectual Property Rights

Patent No. 10-1159449: catwalk rope carrier using the friction of hauling cables
Patent No. 10-1210123: vertical wire sheave that can be rotated horizontally
Patent No. 10-1213317: driving winch with two shafts for high speed and low speed for the construction of suspension bridge cables
Patent No. 10-1190338: installation method and apparatus for catwalk ropes in suspension bridge by controlling the tension force of the catwalk rope
Patent No. 10-1159450: installation method for catwalk rope in suspension bridge by passing the catwalk rope carrier through guide rollers at a pylon under condition of tensile force relaxation in catwalk rope
Patent No. 10-1349298: crane apparatus for suspension bridge and method of elevating bridge block for suspension bridge
Patent No. 10-1655332: suspension bridge with coupling reinforcing cables for the main cable and construction method thereof
Patent No. 10-2004961: lifting gantry with cable deviation warning and prevention structure

Concrete Cable-Stayed Bridge Construction Technology Representative Technologies

Technology overview

Cable-stayed bridges are actively applied to inland road construction as well as land-connecting bridges as economical and aesthetic design is possible.We have built up cable-stayed bridge construction technologies through Samcheonpo Bridge and Cheongpung Bridge,starting with Seohae Bridge. We have built differentiated construction engineering (CE) service systems by obtaining the core technologies required for concrete cable-stayed bridge construction, which replaced the existing reinforcement material with concrete. In this way, DL E&C plays a leading role in the industry by applying the technologies in domestic and international markets

Effects

Cost savings and buildability and quality improvement

Applied projects

Korea’s first marine concrete cable-stayed bridge, Turtle Ship Bridge: configuration management, wind resistance stability evaluation during construction, FT optimum operation technologies
Korea’s first curved cable-stayed bridge, Sepung Bridge: configuration management, F/T optimum operation technologies
Koreas’ first curved slanted tower cable-stayed bridge, Handuri Bridge: curved tower construction technology
Brunei’s first cable-stayed bridge, Riphas Bridge: configuration management technology and F/T optimum operation technology
Brunei’s longest cable-stayed bridge, Temburong Bridge: saddle-type settlement cable, fire resistance cable design and construction, and 3D curved tower construction technologies

Intellectual Property Rights

Patent No. 10-1326726: tensile stress apparatus and method in tension member with fiber bragg grating sensor
Program No. C-2012-010773: load cell indication program
Patent No. 10-2064969: waterproof seal structure between PC house and pile and period-specific construction method thereof
Patent No. 10-1646027: waterproof seal structure between PC house and pile and construction method thereof

BIM(Building Information Modeling) Representative Technologies

Technology overview

BIM technology in the civil engineering works sector enables checking in real-time the visual process and cost through the linkage of 3D model with the existing EVMS(earned value management system). The BIM technology contributes to productivity improvement and smooth communication between construction sites and head officeby rationally improving the construction management process with a review of interventions between members in advance. We aim to lead the civil works BIM marketby presenting the national civil engineering works’ BIM standard model.

Effects

Construction period reduction and buildability improvement

Applied projects

3D object-based EVMS: Handuri Bridge and Cheonsa Bridge
3D object-based process management system: Seonam Environmental Technology and Sihwa Construction Section 3
Intervention review and output calculation: Cheongpung Bridge, Jeokgeum Bridge, Palyoung Bridge, Simgok 2 Bridge, Turtle Ship Bridge and many others

Intellectual Property Rights

Patent No. 10-1263655: building information modeling system for cost and schedule management and operation method thereof
Program No. S-2010-002952: 3D object-based cost and schedule integrated management system

Low price high-performance concrete Representative Technologies

Technology overview

Low price high-performance concrete technology utilizing low cost eco-friendly materials

Effects

Enhances concrete durability (durability period) of a marine bridge, reduces the strength development period(construction period), controls harbor caisson concrete hydration heat, and improves construction speed

Applied projects

Singapore TTP1 construction site, Busan New Port, Angol Bridge, etc.

Intellectual Property Rights

Patent No. 10-2013-0130489 : Regarding high-durability concrete utilizing blast-furnace slag

Concrete Self-Compacting and Non-Compaction Technology Representative Technologies

Technology overview

Unlike existing self-compacting concrete requiring lots of cement bonding materials,we developed low-cement self-compacting concrete compacted by flowing like water using a small amount of cement as well as non-compacting construction technology

Effects

Expansion of application subjects, cost savings, buildability improvement, and defect risk reduction

Applied projects

Saemangeum South-North Road Section 3, Milyang-Ulsan Expressway Section 7, Yeongam-Haenam Access Road Section 1, Chungju Dam water amount control capacity increase, Songsan-Sihwa connection road

Intellectual Property Rights

Patent No. 10-1985774: self-compacting concrete composition containing flowable admixture
Patent No. 10-199223: self-compacting additive composition for concrete and low strength self-compacting concrete structure using the same composition