ASTM BS DIN GB Durable prefabricated Steel Portable Bridge GB Q345B

Steel Bridges In The World/prefabricated Steel Bridge Manufacturers

The role of Type 321 Bailey bridge in municipal water conservancy projects

Type 321 Bailey bridge has a wide range of applications in municipal water conservancy projects, mainly reflected in the following aspects:

1. **Temporary bridge**
Type 321 Bailey bridge can quickly build temporary bridges to cross rivers, gullies or other obstacles to ensure smooth traffic during construction. The modular design of this bridge enables it to quickly adjust the span and load-bearing capacity according to actual needs to ensure the smooth transportation of construction materials and equipment.

2. **Construction support**
The components of Type 321 Bailey bridge are not only used for bridge construction, but also widely used as a variety of prefabricated steel structures such as construction supports, gantries, cable hanging columns, etc. These structures are used in municipal water conservancy projects to support construction equipment and materials and improve construction efficiency and safety.

3. **Emergency repair**
In municipal water conservancy projects, Type 321 Bailey bridge can be used to quickly repair damaged bridges or roads. Its rapid erection and disassembly characteristics make it an ideal choice for emergency situations, enabling rapid restoration of traffic and ensuring smooth progress of the project.

4. **Reduced construction costs**
The components of the 321 Bailey Bridge can be disassembled and reassembled multiple 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.

5. **Strong adaptability**
The 321 Bailey Bridge can adapt to different terrains and environmental conditions, providing reliable solutions whether crossing rivers, gullies or other obstacles. This adaptability makes it widely used in municipal water conservancy projects.

Summary
The 321 Bailey Bridge plays an important role in municipal water conservancy projects with its rapid erection, high load-bearing capacity, strong adaptability and versatility. These characteristics make it an ideal choice for responding to various complex engineering needs.

Specifications:

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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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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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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