ASTM GB Steel Emergency Bridge / steel Structure Bridge Traditional Style

Steel Emergency Bridge/steel Structure Bridge

Yes, Bailey bridges can be used for permanent structures. While they were initially designed for temporary and emergency use, many Bailey bridges have been adapted for long-term or permanent applications due to their durability and adaptability. Here are some key points that support their use as permanent structures:

1. **Durability and Strength**:

 Bailey bridges are made from high-strength steel, which provides excellent durability and load-bearing capacity. With proper maintenance and corrosion-resistant materials, they can last for decades.

2. **Adaptability**:

 The modular design of Bailey bridges allows for easy customization and reinforcement. Engineers can add more panels and supports to increase the bridge's strength and span, making it suitable for permanent use.

3. **Real-World Examples**:

 There are numerous examples of Bailey bridges being used as permanent structures worldwide. For instance, the longest Bailey bridge, which was 788 meters (2,585 feet) long and spanned the Derwent River in Hobart, Australia, was in use from 1975 until 1977 when the permanent Tasman Bridge was completed. Additionally, in 2024, the Indian Army built a 190-foot Bailey bridge in the village of Mundakkai in Kerala, India, following a catastrophic landslide.

4. **Maintenance and Upgrades**:

 With regular inspections and maintenance, Bailey bridges can remain in service for extended periods. This includes checking for signs of wear, rust, and structural integrity, as well as applying protective coatings to prevent corrosion.

5. **Cost-Effectiveness**:

 Bailey bridges are cost-effective solutions for both temporary and permanent applications. Their modular components can be reused or repurposed, reducing long-term costs.

In summary, while Bailey bridges are renowned for their rapid deployment and temporary use, they can also serve as permanent structures with the right design considerations and maintenance practices.

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