Bridge Business

HDBox Girder

HDBox Girder Overview

Overview

Introduction

The HD Box girder bridge composes half-deck to the steel box girder with the positive moment open-cross section to resist the dead load due to structural components with the composite cross section in contrast to the existing method (steel box girder, open-top steel girder) that resisted the load with the steel cross section. Therefore, this new type box girder bridge has maximized the structural efficiency and economic efficiency.

Overview

Features

Background of development

Characteristics

Structural performance

  • Resistance to the dead load with the composite section of steel materials and the high strength half-deck → Enhance structural efficiency and reduce amount of steel materials
  • Application of the composite cross section of the steel materials and high strength half-deck → Increase in the bending and torsional stiffness

Thickness and strength of half deck based on the span length