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3m Height Steel Box Girder Bridge Weather Resistant Modular Steel Bridge

Brand Name:	EVERCROSS
Model Number:	COMPACT-200; COMPACT-100; CHINA 321 ; PB 100; LSB; GWD; DELTA; 450,etc
MOQ:	negotiation
Price:	1000USD ~ 2000USD Per ton
Delivery Time:	negotiation
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

CNAS; COC; PVOC; SONCAP; CIDB;FORM E;FORM L; FORM M, etc

Product Name:

Steel Box-girder Bridge

Bridge Deck:

Concrete

Type:

Single Box Girder Bridge；Double Box Girder Bridge；Multiple Box Girder Bridge

Material:

Prefabricated Steel

Height:

Grade:

Q345B, Q335B

Wind Resistance:

Class12

Weather Resistance:

Weather Resistant

Maintenance Requirements:

Low Maintenance

Dimensions:

Prefabricated

Color:

Army Blue

Durability:

Durable

Weight:

5000tons

Turnaround Time:

60 To 90 Days

Width:

10m

Installation Method:

Cantilever Construction

Packaging Details:

According to detailed order

Highlight:

3m Steel Box Girder Bridge

3m Modular Steel Bridge

Weather Resistant Steel Box Girder Bridge

Product Description

3m Height Steel Box Girder Bridge Weather Resistant Modular Steel Bridge

Product Specifications

Attribute	Value
Product Name	Steel Box-girder bridge
Bridge Deck	Concrete
Type	Single Box Girder Bridge; Double Box Girder Bridge; Multiple Box Girder Bridge
Material	Prefabricated Steel
Height	3m
Grade	Q345B, Q335B
Wind Resistance	Class12
Weather Resistance	Weather Resistant
Maintenance Requirements	Low Maintenance
Dimensions	Prefabricated
Color	Army blue
Durability	Durable
Weight	5000tons
Turnaround Time	60 to 90 days
Width	10m
Installation Method	Cantilever Construction

Product Description

The steel box-girder bridge is a modern structural solution composed of top plate (bridge panel), beam web, bottom plate, longitudinal stiffener, transverse stiffener, and diaphragm plate (cross beam). With thickness ranging from 12-30mm for main plates and 10-20mm for secondary plates, these bridges are manufactured in factory fragments (typically 10-30m sections) and assembled through site welding.

Orthotropic Steel Bridge Panels

The lower edge of the top plate is welded with vertical and horizontal stiffeners to form an orthogonal bridge panel. Longitudinal ribs feature both open and closed cross-section forms, typically inverted T-shaped, with transverse ribs containing notches for continuous longitudinal rib passage.

Structural Forms

Steel box girders serve as primary structural elements for various bridge types including beam bridges, suspension bridges, and cable-stayed bridges. The closed section provides excellent bending and torsional resistance while offering corrosion protection and utility space.

Single Box Steel Girder Bridge

Ideal for bridges with widths ≤3 lanes or width-to-span ratios <1/10. Features include:

Effective flange width with main beam web interval ≤Le/5
Main beam cantilever length ≤Le/10
Lifting beams and side beams for long cantilevers
Steel deck improves bridge panel stiffness

Double Box Steel Girder Bridge

Used when bridge width makes single box impractical due to size, transportation, or installation constraints. Beams may be optional depending on design requirements.

Multi-box Steel Girder Bridge

Optimal for wide bridges with small spans, featuring uniformly spaced main beams for balanced load distribution.

Structural Components

Longitudinal Beams: Reduce span of concrete bridge panels (≤3m spacing) and enhance steel panel stiffness. 3m Height Steel Box Girder Bridge Weather Resistant Modular Steel Bridge 5

Transverse Beams: Distribute loads evenly across multiple boxes (spacing ≤6m with longitudinal beams, ≤20m without). 3m Height Steel Box Girder Bridge Weather Resistant Modular Steel Bridge 6

Supports: Single-box bridges require two end supports for torque resistance, while multi-box bridges use one support per box with temporary jack supports during construction. 3m Height Steel Box Girder Bridge Weather Resistant Modular Steel Bridge 7

Mechanical Characteristics

Key considerations include:

Compression flange stability under bending moments
Box girder distortion under torque
Web crumpling under concentrated forces

Structural Measures: Adequate transverse partitions, stiffening ribs, and proper rib spacing prevent distortion, instability, and buckling during fabrication, transport, and installation.

Applications

Steel box-girder bridges are versatile solutions for:

Road, rail, and high-speed rail infrastructure
Customizable designs to match project requirements and environments

Advantages

Compared to Truss Girder Bridges:

Lighter weight with steel savings
Higher flexural and torsional stiffness
Sleek, aesthetically simple design

General Benefits:

Large flange width for superior bending resistance
Excellent torsional stiffness for curved bridges
Fast construction with good stability
Hollow structure for easy maintenance and utility access

Evercross Steel Bridges Overview

Category	Specifications
Bridge Types	Bailey bridge (Compact-200, Compact-100, LSB, PB100, China-321, BSB) Modular bridge (GWD, Delta, 450-type, etc) Truss Bridge, Warren bridge, Arch bridge, Plate bridge, Beam bridge, Box girder bridge, Suspension bridge, Cable-stayed bridge, Floating bridge
Design Spans	10M TO 300M Single span
Carriage Way	SINGLE LANE, DOUBLE LANES, MULTILANE, WALKWAY
Loading Capacity	AASHTO HL93.HS15-44, HS20-44, HS25-44 BS5400 HA+20HB, HA+30HB AS5100 Truck-T44 IRC 70R Class A/B NATO STANAG MLC80/MLC110 Truck-60T, Trailer-80/100Ton
Steel Grade	EN10025 S355JR S355J0/EN10219 S460J0/EN10113 S460N/BS4360 Grade 55C AS/NZS3678/3679/1163/Grade 350 ASTM A572/A572M GR50/GR65 GB1591 GB355B/C/D/460C
Certificates	ISO9001, ISO14001, ISO45001, EN1090, CIDB, COC, PVOC, SONCAP
Welding Standards	AWS D1.1/AWS D1.5 AS/NZS 1554 or equivalent
Bolts	ISO898, AS/NZS1252, BS3692 or equivalent
Galvanization Codes	ISO1461 AS/NZS 4680 ASTM-A123 BS1706 or equivalent

Tags:

Steel Bailey Bridge

Prefabricated Steel Truss Bridge

Modular Steel Bridge

Steel Footbridge

Steel Plate Girder Bridge

Steel Box Girder Bridge

Steel Arch Bridge

Composite Beam Bridge

Steel Cable Suspension Bridge

Cable Stayed Bridge

Floating Pontoon Bridge

Mechanized Bridge

Bridge Steel Structure

Steel Bailey Bridge

Prefabricated Steel Truss Bridge

Modular Steel Bridge

Steel Footbridge

Steel Plate Girder Bridge

Steel Box Girder Bridge

Steel Arch Bridge

Composite Beam Bridge

Steel Cable Suspension Bridge

Cable Stayed Bridge

Floating Pontoon Bridge

Mechanized Bridge

Bridge Steel Structure

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