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Annual Report

New Space

  • New Space

  • Technology

  1. Super Long-Span Bridge

    • Design and construction technology for a super long-span bridge
    • Construction technology to build high pylon
    • Equipment and the method for prefabricated parallel wire strand(PPWS*) installing and girder cross sections
    • Wind resistant design
    • Foundation capacity and settlement analysis technology

    High strength cable Construction technology to build high pylon Equipment and the method for PPWS Foundation Construction technology at great depth Wind Resistant Design

    PPWS : Prefabricated Parallel Wire Strand

  2. Underground space

    • Urban underground space (Underground city, Long tunnel at great depth)
    • Subsea tunnel
    • Energy storage cavern / Nuclear waste storage facilities

    Design and construction technology for subsea tunnel DCTM (Displacement Controlled Tunnelling Method) Design and construction technology for large underground space Mechanical excavation Development of cutoff grouting expert system & high performance shotcrete and auto-spray system

  3. Ocean Space

    • Marine facility for offshore Oil & Gas
    • Floating harbor / Storage / Entertainment
    • Offshore structure for ocean energy
    • Artificial island / Dredging & Landfill

    Optimized Transportation System Dredging Monitoring & Environmental Dredging Offshore Structural Design Construction and Installation Stability Analysis of Floating Structure Module of Floating Structure

  4. Environment-friendly high-performance construction materials

    • CO2 reducing construction materials
    • Ultra-high strength / Low heat / Fire resistance concrete
    • High durability / Blast resistance nano materials
    • Thin polymer overlay / Cold mix asphalt pavement
    • High performance / High durability construction materials

    Fire resistance concrete Blast resistance concrete Optimal concrete mix design and construction method study Ultra-high strength concrete CO₂ reducing low heat concrete Carbon free cold mix pavement / Thin polymer overlay
  • New Space

  • Technology

  1. Construction stage analysis and geometry control of cable stayed bridge by using Hyunstay
    1. Introduction
      • Construction stage analysis and geometry control of Higher indeterminate and nonlinear cable stayed bridge
      • Site application of Construction stage analysis and geometry control by using Hyunstay developed by HDEC
    2. Features
      • Analysis considering geometry non-linearity which is distinct feature of long span bridge
      • Time dependent analysis considering material characteristic
      • Application of elastic catenary considering cable element non-linearity
      • Supply various construction commands for detailed construction stage
      • Complete of program verification (Applied to 2nd Jin-do cable stayed bridge, Ma-chang cable stayed bridge, etc.)
      • Reduction of Construction time due to own technology application and rapid feedback from site
      • Intellectual property rights
        • - Program (3) : Construction stage analysis and geometry of composite cable stayed bridge, etc.
    3. Outline of Technology

      Q&A : kimms@hdec.co.kr

      Outline of Technology

    4. Experience

      Completion of 2nd Jin-do cable stayed bridge geometry control, Completion of Ma-chang composite cable stayed bridge geometry control

  2. Prestressed Concrete Hybrid Girder with Steel Truss Members
    1. Introduction

      Prestressed concrete hybrid girder of which web is substituted for steel truss members

    2. Features
      • Reduced weight of girder
      • Economical improvement by adaptable various construction methods
      • Increasing efficiency of prestressing
      • Aesthetic improvement by open-type girder
      • Intellectual property rights
        • - Domestic Patent (3) : Composite Girder having Connection Structure of Inclined Members in Composite Girder with Steel Truss Web Using Embedded Perfobond and such Connection Structure, etc.
        • - Utility Model (1) : Connection Structure of Inclined Members in CompositeGirder with Steel Truss Web and Composite Girder having such Connection Structure
    3. Outline of Technology

      Q&A : jkh@hdec.co.kr

      Outline of Technology

    4. Experience

      Gangchun wier maintenance bridge in Namhan River

  3. New Automatic Cutoff Grouting Technology
    1. Introduction

      New Automatic Cutoff Grouting Technology that Enables to Control Flow Rate/Injection Pressure of Cement

    2. Features
      • Economic grouting with constant flow rate/pressure injection of cement
      • Efficient grouting with automatic control of cement injection
      • Selection of optimum grouting method by ground condition with new system
      • Intellectual property rights
        - Domestic patent : Grouting system and its control method
    3. Outline of Technology

      Q&A : hongsung@hdec.co.kr

      Outline of Technology

    4. Experience

      Application to Boryung-Taean subsea tunnel(planned), Application to turnkey design for Riverside Expressway riverbed tunnel

  4. Insulation-Water Proof Membrane for Tunnel Lining
    1. Introduction
      • Development of Insulation-Water Proof Membrane to Prevent Frost Heave in Tunnel Lining
      • Establishment of Design Specification on Insulation based on Freezing Index and Traffic
    2. Features
      • Economic grouting with constant flow rate/pressure injection of cement
      • Efficient grouting with automatic control of cement injection
      • Selection of optimum grouting method by ground condition with new system
      • Intellectual property rights
        - Domestic patent : Grouting system and its control method
    3. Outline of Technology

      Q&A : hongsung@hdec.co.kr

      Outline of Technology

    4. Experience

      Application to turnkey design for Inje tunnel

  5. Environmental High-Efficiency Dredging Technology
    1. Introduction

      Dredging technology optimizing hydraulic transports with U-Dredging Monitoring System and minimizing dredging impact on environment with Eco Dredging Cutter Hood

    2. Features
      • Environmental dredging minimizing 3Rs with rotation Cutter hood
      • Improvement of dredging efficiency by using portable U-Dredging Monitoring System
      • Optimized hydraulic transportation and dredging concentration control system
      • Journal Paper 5 (SCI 1), Conference Paper 20,
      • Patented 5, Patent application 12(PCT 4), 4 Softwares
      Application
      • Taean Dredging Site
      • DC Chemical Dredging Site
      • 4-River Restoration Dredging Site
    3. Outline of Technology

      Q&A : mslee@hdec.co.kr

      Outline of Technology

    4. Experience

      DC Chemical Dredging Site, 4-River Restoration Dredging Site

  6. Evaluation of Behavior and Bearing Capacity of Large Diameter Piles
    1. Introduction
      • Prediction of the behavior and bearing capacity of large diameter pile regarding the different soil condition
      • Interpretation and application of pile load test : Reduced scaled pile test, Osterberg cell test
      • Drivability analysis and bearing capacity prediction of large diameter pile using wave propagation method
      • Time-dependent behavior of driven pile
    2. Features
      • Cost and construction period reduction through the prediction of the behavior and bearing capacity of large diameter pile
      • Cost reduction and technical advantage in tender design using the optimized pile design method
    3. Outline of Technology

      Q&A : mjsong@hdec.co.kr

      Outline of Technology

    4. Experience

      Pile capacity evaluation by dynamic load test –Jamuna (Bangladesh), Drivability and hammer evaluation by energy monitoring and PDA test and pile capacity evaluation by DLT - Namhang bridge (Korea), Pile capacity evaluation and optimization of pile length by dynamic load test – KUNOP, KSOP (Kuwait)

  7. High-Performance Concrete
    1. Introduction

      Optimized Technology of High-Performance Concrete for Challenging Level Structures such as Long-Span Bridge, Super High-Rise, and Nuclear Power Plant

    2. Features
      • Development of 200 MPa ultra-high strength concrete
      • Fire resistance of high performance concrete
      • Development of ultra-low heat concrete for crack control
      • Development of blast resistance concrete under blast loading
      • Intellectual property rights
        - Domestic patent (3) : A composite of ultra-high strength concrete including non-plastic binder, etc.
    3. Outline of Technology

      Q&A : ilscyk@hdec.co.kr

      Outline of Technology

  8. CO2 Reducing Low Heat Concrete
    1. Introduction

      The manufacturing technology of CO2 reducing concrete with low heat characteristic

    2. Features
      • Development of CO2 emission and hydration heat reducing technology using high volume fly ash or GGBS
      • Improvement of concrete properties such as workability & durability
      • Intellectual property rights
        - Domestic patent (1) : A composite of low heat concrete
    3. Outline of Technology

      Q&A : popcon75@hdec.co.kr

      Outline of Technology

  9. Emulsified Asphalt Paving Technology
    1. Introduction

      Microsurfacing thin overlay pavement system with electric arc furnace aggregate

    2. Features
      • A polymer modified cold-mix paving system that can remedy a broad range of problems on today's streets, highwaysand airfields
      • Preventive maintenance paving technology reducing Green House Gas(GHG) emission
      • A quick, economical surface treatment for asphalt, provides a smooth, durable pavement surface
      • Early traffic opening-capable multi-layer application using emulsified asphalt and electric arc furnace slag aggregate
      • Intellectual property rights
        • - Award as New Construction technology(No. 547) by Ministry of Load, Transport and Maritime Affairs(MLTM),
          Dec. 2007
    3. Outline of Technology

      Q&A : kimws@hdec.co.kr

      Outline of Technology

    4. Experience

      Construction at the field site #1(paju city), Construction at the field site #2(seoul)

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