Different Types Modern Steel Portable Bridge Welded Galvanized Double Lane 7.35m

Different Types Of Steel Bridges/modern Steel Bridges

Technical features of Type 200 Bailey Bridge

Type 200 Bailey Bridge is a high-performance prefabricated steel bridge widely used in bridge engineering, disaster relief, temporary passages and other fields. Its technical features are as follows:

1. **High truss height**
The truss height of Type 200 Bailey Bridge is 2.134 meters, which is higher than the 1.76 meters of Type 321. This design not only improves the structural strength and stability of the bridge, but also can adapt to larger spans and heavier loads.

2. **Reinforced chord design**
Type 200 Bailey Bridge adopts a reinforced chord design, and the joints between the chords and the joints between the trusses are staggered to reduce the inelastic deformation caused by the pin hole gap. This design significantly improves the stability and bearing capacity of the bridge.

3. **Pre-arch technology**
Type 200 Bailey Bridge adopts pre-arch technology, which reduces the vertical deflection of the bridge mid-span by presetting a certain arch in the bridge design. This technology not only improves the stability and service life of the bridge, but also ensures the flatness of the bridge during use.

4. **Guide sleeve positioning and fixing**
The bolt connection of the 200-type Bailey bridge adopts the guide sleeve positioning and fixing method, which improves the connection accuracy and the service life of the bolts. This design not only ensures the connection strength of the bridge, but also reduces the safety hazards caused by loose connections.

5. **Integral wind-resistant tie rod**
The wind-resistant tie rod of the 200-type Bailey bridge is made into an integral type and connected to the crossbeam, which improves the overall stability of the bridge. This design can effectively resist the influence of wind and other external forces on the bridge and ensure the stability of the bridge in complex environments.

6. **Modular design**
The 200-type Bailey bridge adopts a modular design, and each component can be prefabricated in the factory and then transported to the construction site for rapid assembly. This design not only shortens the construction period, but also improves the construction efficiency and ensures the rapid construction and disassembly of the bridge.

7. **High load capacity**
The Type 200 Bailey Bridge is designed to carry heavy loads and can accommodate various vehicles with a track load of 50 tons and a tire load of 30 tons (axle pressure of 13 tons). This high load capacity enables it to adapt to a variety of engineering needs, including the passage of large trucks and construction machinery.

8. **Multiple scopes of application**
The Type 200 Bailey Bridge is suitable for a variety of engineering scenarios, including:
- **Single-span temporary bridge**: It can quickly cross obstacles such as rivers, gullies, and broken bridges.
- **Dual-lane bridge**: It can be assembled into a dual-lane bridge, expanding the scope of use.
- **Trestles and pedestrian bridges**: Provide temporary passages for construction personnel and equipment.
- **Large-span bridge**: The maximum single-span span can reach 76.2 meters (single lane) and 57.9 meters (double lane).
- **Emergency and disaster relief bridge**: After natural disasters such as earthquakes and floods, it can be quickly built to provide transportation guarantees for rescue teams.

Summary
The Type 200 Bailey Bridge has become an ideal choice for various complex engineering needs due to its technical features such as high truss height, strengthened chord design, pre-arch technology, guide sleeve positioning and fixation, integral wind-resistant tie rods, modular design, high load-bearing capacity and multiple application ranges. These technical features not only improve the stability and service life of the bridge, but also ensure the safety and reliability of the bridge during use.

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