Prefabricated Steel 321 Bailey Bridge Modern Steel Bridge portability

Prefabricated Steel Bridge/modern Steel Bridge

The role of the 321 Bailey bridge in emergencies

The 321 Bailey bridge has many important functions in emergency situations. The following are specific application scenarios and advantages:

1. **Quickly build a rescue channel**
The 321 Bailey bridge adopts a modular design. Each component can be prefabricated in the factory and then transported to the construction site for rapid assembly. This method greatly shortens the construction period, allowing the Bailey bridge to be built in a short time to ensure the rapid passage of rescue materials and personnel. For example, in emergency rescue after natural disasters, Bailey bridges can be quickly built to provide strong support for rescue work.

2. **Ensure material transportation and personnel evacuation**
In emergency situations, such as after natural disasters such as earthquakes and floods, the 321 Bailey bridge can quickly build a temporary channel to ensure the passage of rescue materials and personnel. Its high load-bearing capacity and rapid construction characteristics make it a key tool in rescue work.

3. **Temporary bridge solution**
The 321 Bailey bridge can be used as a temporary bridge, especially when the existing bridge is damaged or the road is interrupted. It can be quickly erected to ensure the continuity of traffic until the permanent bridge is repaired or rebuilt.

4. **Construction scaffold or tower**
The components of the 321 Bailey Bridge are not only used for bridge construction, but also widely used as construction scaffolds, gantries, cable suspension columns and other assembled steel structures. This versatility makes it widely used in construction projects.

5. **Reducing construction costs**
The components of the 321 Bailey Bridge can be disassembled and reassembled many times and recycled. This not only reduces project costs, but also improves resource utilization efficiency. Its lightweight structure and rapid erection characteristics reduce dependence on professional equipment and personnel, further reducing construction costs.

 
The 321 Bailey Bridge can adapt to different terrain and environmental requirements, whether it is crossing rivers, gullies or other obstacles, it can provide reliable solutions. This adaptability makes it widely used in emergency situations.

Summary
The Type 321 Bailey Bridge plays an important role in emergency situations and provides strong support for rescue work due to its fast construction, high load-bearing capacity, strong adaptability and versatility. These features make it an ideal choice for various complex engineering needs.

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