Large Span Steel Trestle Bridge / Sea Crossing Steel Bridge

Large Span Steel Bridge/sea-crossing Steel Bridge

Using high-quality steel for Bailey bridges offers several significant benefits that enhance the durability, performance, and cost-effectiveness of these structures:

1. **High Strength-to-Weight Ratio**
High-quality steel provides an exceptional strength-to-weight ratio, allowing engineers to design lighter structures that can support heavy loads without requiring excessive material. This property is particularly beneficial for long-span bridges, where minimizing weight is crucial for structural stability.

2. **Durability and Longevity**
High-quality steel is known for its durability and resistance to environmental factors such as wind, rain, and temperature fluctuations. When properly treated with protective coatings, steel can withstand corrosion and rusting, significantly extending its lifespan. This durability means that steel bridges require less frequent replacement or major repairs, leading to lower lifecycle costs.

3. **Versatility in Design**
Steel's versatility allows for a wide range of design possibilities. It can be fabricated into various shapes and sizes, accommodating unique architectural requirements. This flexibility enables engineers to create aesthetically pleasing structures that blend seamlessly with their surroundings while meeting functional needs.

4. **Quick Assembly and Reduced Construction Time**
The prefabrication of steel components significantly reduces on-site construction time. Since the modules are manufactured in advance, they can be quickly assembled upon arrival at the site. This rapid installation minimizes traffic disruption and reduces the overall project timeline.

5. **Cost-Effectiveness**
While the initial cost of high-quality steel may be higher than some alternative materials, its long-term benefits often outweigh these initial expenses. The durability and low maintenance requirements of steel bridges lead to lower lifecycle costs. Additionally, the speed of construction associated with modular steel bridges can result in significant savings on labor and equipment.

6. **Resistance to Corrosion**
High-quality steel, when treated with advanced coatings such as galvanization or specialized paints, provides superior resistance to corrosion. This is particularly important in harsh environments, such as coastal areas or regions with high humidity.

7. **Ease of Maintenance**
Steel bridges require less frequent maintenance compared to other materials. Regular inspections and timely repairs can help maintain structural integrity and extend the bridge's lifespan. The ability to replace or repair individual components without affecting the entire structure makes maintenance operations more efficient and cost-effective.

8. **Sustainability**
Steel is a highly recyclable material, making it an environmentally friendly choice for bridge construction. The use of high-quality steel can contribute to sustainable infrastructure projects by reducing the need for frequent replacements.

In summary, using high-quality steel for Bailey bridges enhances their strength, durability, and versatility while reducing maintenance needs and lifecycle costs. These benefits make high-quality steel an ideal choice for both temporary and permanent bridge applications.

Specifications:

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CB321(100) Truss Press Limited Table
No.	Lnternal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Standard Truss Moment(kN.m)	788.2	1576.4	2246.4	3265.4	1687.5	3375	4809.4	6750
321(100)	Standard Truss Shear (kN)	245.2	490.5	698.9	490.5	245.2	490.5	698.9	490.5
321 (100) Table of geometric characteristics of truss bridge(Half bridge)
Type No.	Geometric Characteristics	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Section properties(cm3)	3578.5	7157.1	10735.6	14817.9	7699.1	15398.3	23097.4	30641.7
321(100)	Moment of inertia(cm4)	250497.2	500994.4	751491.6	2148588.8	577434.4	1154868.8	1732303.2	4596255.2

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CB200 Truss Press Limited Table
NO.	Internal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	QS	SSR	DSR	TSR	QSR
200	Standard Truss Moment(kN.m)	1034.3	2027.2	2978.8	3930.3	2165.4	4244.2	6236.4	8228.6
200	Standard Truss Shear (kN)	222.1	435.3	639.6	843.9	222.1	435.3	639.6	843.9
201	High Bending Truss Moment(kN.m)	1593.2	3122.8	4585.5	6054.3	3335.8	6538.2	9607.1	12676.1
202	High Bending Truss Shear(kN)	348	696	1044	1392	348	696	1044	1392
203	Shear Force of Super High Shear Truss(kN)	509.8	999.2	1468.2	1937.2	509.8	999.2	1468.2	1937.2

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CB200 Table of Geometric Characteristics of Truss Bridge(Half Bridge)
Structure	Geometric Characteristics
	Geometric Characteristics	Chord Area(cm2)	Section Properties(cm3)	Moment of Inertia(cm4)
ss	SS	25.48	5437	580174
	SSR	50.96	10875	1160348
DS	DS	50.96	10875	1160348
	DSR1	76.44	16312	1740522
	DSR2	101.92	21750	2320696
TS	TS	76.44	16312	1740522
	TSR2	127.4	27185	2900870
	TSR3	152.88	32625	3481044
QS	QS	101.92	21750	2320696
	QSR3	178.36	38059	4061218
	QSR4	203.84	43500	4641392

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Advantage

Possessing the features of simple structure,
convenient transport, speedy erection
easy disassembling,
heavy loading capacity,
great stability and long fatigue life
being capable of an alternative span, loading capacity