Heavy Duty Scaffold Bailey Suspension Bridge TSR Structure Q345E

Heavy Duty Scaffold Bailey Bridge/suspension Bailey Bridge

In complex terrain, Bailey bridges are stable in a variety of ways:

1. **Reasonable design and optimized structure**
- **Optimized geometry and connection method**: By optimizing the geometry, cross-sectional dimensions and node connection method of Bailey bridges, their overall stiffness and stability can be further improved. For example, the use of new node connection methods, such as welding or high-strength bolt connections, can reduce deformation and looseness at the nodes, thereby enhancing the stability of the bridge.
- **Increase support structure**: Support frames are set on the planes of the upper and lower chords of the Bailey bridge as plane connections, and support frames are set on the vertical webs as vertical connections. These support structures can effectively improve the stability of the Bailey bridge.

2. **Strengthen foundation treatment**
- **Stable foundation**: In complex terrain, the foundation treatment of Bailey bridges is crucial. It is necessary to ensure that the foundations of piers and abutments are stable to prevent loosening or settlement of the foundations due to terrain changes or water erosion. For example, when building Bailey bridges in mountainous areas or near rivers, the foundation is usually reinforced, such as driving pile foundations or pouring concrete foundations.

3. **Erection method adapted to terrain**
- **Flexible adjustment of span and structure**: Bailey bridges can flexibly adjust span and structure according to different terrain and needs. In complex terrain, the bearing capacity can be increased by adjusting the arrangement of trusses (such as single row, double row, triple row, or even double or triple trusses).
- **Segmented erection and gradual adjustment**: In complex terrain, Bailey bridges can be erected in segments and the position and height of the bridge can be gradually adjusted to adapt to changes in terrain.

4. **Regular inspection and maintenance**
- **Regular inspection**: Regularly check whether the components of the Bailey bridge are intact, such as support piles, abutments, steel plates, connectors, etc. If damage or deformation is found, it should be repaired or replaced in time to ensure the stability and bearing capacity of the structure.
- **Rust-proof treatment**: Bailey bridges are susceptible to humid environments and are prone to rust. Therefore, regular anti-rust treatment should be carried out, and anti-rust paint can be applied or other anti-rust methods can be used to protect the metal parts of the bridge.
- **Clear waterways**: If the drainage system on the Bailey bridge is blocked, it is easy to cause water accumulation, aggravating the corrosion and damage of the bridge. Therefore, the drainage ditch on the bridge deck should be cleared regularly to ensure smooth drainage.

5. **Use professional equipment and technology**
- **Finite element analysis**: Through finite element numerical calculation, the stability of the Bailey bridge under different working conditions is analyzed and its structural design is optimized. For example, during the construction phase, the deformation and stress of the Bailey bridge under different loads can be simulated by finite element analysis, so as to take measures in advance to ensure stability.
- **Professional maintenance team**: For parts where maintenance work is more complicated or requires special equipment, it is recommended to ask professional technicians to operate and maintain to ensure the accuracy and safety of the operation.

Through the above measures, the Bailey bridge can remain stable in complex terrain and provide reliable protection for transportation and military operations.

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