Q355B Prefab Pedestrian Bridge / Steel Structure Bridge Galvanized

Steel Bridge (pavement)/steel Structure Bridge Maker

Dealing with biological growth on bridges, such as algae or moss, is an important aspect of bridge maintenance, especially in humid environments. Here are some tips to manage and mitigate biological growth on Bailey bridges:

1. **Regular Cleaning**
- **Frequency**: Regular cleaning is essential to remove biological growth before it becomes problematic. Cleaning should be conducted at least twice a year, or more frequently in areas with high humidity or frequent rainfall.
- **Methods**: Use non-abrasive cleaning methods such as high-pressure water washing or gentle scrubbing with a soft brush. Avoid using harsh chemicals that could damage the galvanized coating.

2. **Preventive Measures**
- **Drainage Systems**: Ensure that the bridge’s drainage systems are clear and functioning properly to prevent water accumulation, which can promote biological growth.
- **Coatings**: Apply anti-fungal or anti-algal coatings to the bridge surfaces to inhibit the growth of biological organisms.

3. **Inspection and Monitoring**
- **Visual Inspections**: Conduct regular visual inspections to identify any signs of biological growth or corrosion. Pay special attention to shaded areas and crevices where moisture can accumulate.
- **Environmental Monitoring**: Monitor the local environment for conditions that may promote biological growth, such as high humidity or proximity to water bodies.

4. **Mechanical Removal**
- **Scraping**: For stubborn biological growth, mechanical removal methods such as scraping may be necessary. However, care should be taken not to damage the underlying galvanized coating.

5. **Chemical Treatments**
- **Biocides**: In some cases, the application of biocides specifically designed to inhibit biological growth may be necessary. These should be used sparingly and in accordance with environmental regulations to avoid harming aquatic life.

6. **Environmental Considerations**
- **Permitting**: If cleaning or treatment methods involve discharges into water bodies, ensure that the necessary permits are obtained and that best practices are followed to minimize environmental impact.

By following these tips, you can effectively manage biological growth on Bailey bridges, ensuring their longevity and structural integrity.

Specifications:

​

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

​​

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

​​

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

​

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