Temporary Steel Bridge/steel Structure Truss Bridge

Corrosion on Bailey bridges can have several significant consequences that affect both their structural integrity and operational safety:

1. **Reduced Load-Bearing Capacity**:
- Corrosion can lead to a reduction in the cross-sectional area of steel components, weakening their load-bearing capacity. This can make the bridge less capable of supporting the intended loads, potentially leading to structural failure.

2. **Structural Weakness and Deformation**:
- Corroded components may become deformed or bent, which can compromise the overall stability of the bridge. This deformation can lead to misalignment of parts and increased stress on other components, further exacerbating the problem.

3. **Increased Maintenance Costs**:
- The presence of corrosion necessitates more frequent inspections and maintenance activities. This includes rust removal, painting, and sometimes replacement of damaged parts, which can be costly over time.

4. **Shortened Lifespan**:
- Without proper maintenance and corrosion prevention measures, the lifespan of a Bailey bridge can be significantly reduced. Corrosion accelerates wear and tear, leading to a need for earlier replacement of components or even the entire bridge.

5. **Safety Risks**:
- Corrosion can create safety hazards by weakening critical components such as bolts, pins, and beams. This can lead to unexpected failures, posing risks to users and maintenance personnel.

6. **Environmental Impact**:
- In some cases, corrosion can lead to the release of rust and other debris into the surrounding environment, potentially affecting local ecosystems.

To mitigate these consequences, regular maintenance, including inspections for signs of corrosion, rust removal, and application of protective coatings, is essential. Additionally, using high-quality, corrosion-resistant materials during the initial construction can help extend the bridge's lifespan and reduce maintenance 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