Gwd Prefabricated Steel Truss Bridges: Efficient Solutions for Large-Span Crossing Challenges

• Customization: Available
• After-sales Service: Guidance and Installing Service
• Scale: Middle Bridge
• Model NO.: GWD Type Modular Bridge
• Usage: Footbridge, Highway Bridge, Over Water Bridge, Railway Bridge, Viaduct
• Steel Grade: S355/ S460/Gr 55c/Gr350/Gr50/Gr65/GB355/460
• Loading Capacity: Hl93/Ha+20hb/T44/Class a/B/MLC110/dB24
• Model Alias: CD450, CD, 450-Type, Hbd60,CB300
• Welding Standard: Aws D1.1/Aws D1.5/AS/NZS 1554 or Equivalent
• Hot DIP Galvanized: ISO1461/AS/NZS 4680/ASTM-A123/BS1706
• Surface Painted: Long-Term Epoxy Zinc-Rich Kit or Temporary Alkyd
• Bolt: 10.9s
• Design Standard: Aashto/BS5400/Irc 70r /As5100/ Korea 1st Grade
• Transport Package: Transported by Container/Truck in Strong Packing
• Specification: Panel Dimension: 3.048m * 2.35m
• Trademark: Great Wall & Evercross
• Origin: Zhenjiang
• HS Code: 7308100000
• Production Capacity: 100, 000 Tons

Product Description

Product Description

The GWD-Type bridge originated in Germany and was introduced into China for mass production through the analysis of its structure by Great Wall engineers.

The introduction of GWD-Type bridge stems from the technical barriers and deficiencies of Bailey Bridge. As is known to all, Bailey Bridge is a common prefabricated steel bridge structure, which is the upper and lower bearing bridge beam with the single pin connecting truss unit as the main beam of the bridge span structure, which has the advantages of simple structure, strong adaptability and good interchangeability. But even if the load is not large, it can only reach 60 meters per single span.

Therefore, Great Wall Heavy Industry launched the GWD-Type bridge. Although the truss adopts larger steel, the structure is simpler, which not only has the advantage of strong adaptability of prefabricated Bailey steel bridge, but also makes up for the limit of span, improves the length of single span and saves the cost of bridge pier.
 

Design Values for Steel Strength (MPa)

Steel														Tension, Compression and Bending Resistance fd						Shearing f vd				Floor Loading f cd
Model								Thickness (mm)
Steel Q355/GR50/S355								≤16						275						160				355
								16~40						270						155
								40~63						260						150
								63~80						250						145
								80~100						245						140

 

Design value for welding joint strength (MPa)

Steel											Butt weld/ welding joint												Fillet Weld f fd
Model					Thickness(mm)						Compression f cd,w						Tension ftd,w		Shearing fvd,w
Steel Q355/GR50/S355					≤16						275						235		160				175
					16~40						270						230		155
					40~63						260						220		150
					63~80						250						215		145
					80~100						245						210		140

Inspection and Maintenance

Components of bridge

Inspection items

Method of maintenance

Frequency

Abutment & Support

Examine if any cracks found on the abutments and the river embankment is in good condition

If there are small cracks found on the abutments, use cement mortar to fill the crack to prevent erosion of the reinforcing bars inside the abutments. If there is damaged of the embankment, application of a mixture of cement mortar with scribbles to fill the cracks

Once per month

Any reshape or damage of the support

Replace the support if it is seriously damaged. (suggest Implementing by professional)

Truss Panel

Any rusting to the steel panels

Keep the bridge dry and clean. Apply melding and anticorrosive Coating

Once per month

Any missing parts of the bridge structure

Inform supervisor timely, and report to the local officials for the bridge status

Any damage or relocation of bridge components

Stop crossing the bridge and report to the immedi- ate supervisor. Seek help from professionals

 

 

Company Profile

 

 

Our Advantages

 

 

Certifications

 

 

 

 

After Sales Service

 

 

 

Our Customers

 

 

FAQ

Q: Which countries do you export to?
A: Our company's products have been exported to dozens of countries and regions. Including: Nepal, Cambodia, Laos, Vietnam, Malaysia, Myanmar, Philippines, Ecuador, Colombia, Barbados, Trinidad and Tobago, Dominica, Papua New Guinea, Solomon Islands, Kenya, Tanzania, Zambia, Congo, Tajikistan, Georgia, etc.

Q: Are you a factory or a trade company ?
A: We are an industry and trade company. The factory covers an area of 47,000 square meters, the production workshop is 22,000 square meters, and the office area is 5,000 square meters. It has 12 production lines of Bailey Bridge, various steel Bridges and various steel structure products, with a lifting capacity of 100 tons. Annual output is more than 50,000 tons. The company has its own import and export rights, with 20 years of export business experience.

Q: Do you accept custom processing?
A: Our company has an efficient and flexible technical team, we can process custom-made a variety of non-standard Bailey bridge, steel bridge, steel structure.

Q: Can your company meet American standards?
A: Yes, our products not only meet the AASHTO American standard, but also meet the British BS5400, Australia AS5100 and other international standards.

Q: Which airport is the nearest to your company? Can I visit your company anytime?
A: The nearest airports are Nanjing Lukou International Airport and Shanghai Pudong International Airport. You can visit our company  anytime, our company will issue an invitation letter and arrange to pick you up according to your needs. Your transportation and accommodation during your visit to our company will be arranged by our company.

Q: Could you send me some hard copies of your catalogues?
A: Sure. Please send us your address and contact information and we will send it to you by international express as soon as possible.

Q: Can we be your agent or distributor?
A: Our company is recruiting powerful partners all over the world for common development and win-win . Look forward to long-term cooperation with you!

Q:How soon can I receive your reply after I send you my inquiry?
A: We will give professional and technical feedback within 6 hours after receiving your inquiry . After communicate the technical parameters,we will provide quotation and preliminary design within 24 hours.