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Bridge DS Steel Composite Girder Concept and Features
Concept of the Girder / Rigid Frame Bridge
A composite rigid frame bridge that combines the advantages of
traditional R.C. rigid frame bridges and DS composite girders.
Key Features of the Girder / Rigid Frame Bridge
Constructability
- No need for temporary supports (falsework), enabling faster construction
- Easy connection between wall and girder corners
- No need for bearings or expansion joints
Cost Efficiency
- Simultaneous upper and lower structure construction shortens the project duration and reduces cost
- Lower maintenance costs
- Reduced steel usage leads to overall cost savings
Structural Performance
- Reduced moment at corner joints (simple support during deck slab pouring)
- Compensates for long-term behavior to help prevent cracking
- Advantageous for securing waterway cross-section clearance
Applicability
- Suitable for medium-span rigid frame bridges between 10m and 30m
- Can be applied to various bridge widths and low-clearance girder systems
