Galvanized Coating Durable Structural Steel Bridge Corrosion Resistance

China Import Direct Panel Bridge/wholesale China Factory Panel Bridge

After a heavy rain, the Bailey bridge may be affected by rain erosion, foundation soaking, loose components, etc., so a comprehensive safety inspection is required. The following are some specific inspection methods:

Foundation inspection
- **Check foundation settlement**: Check whether the foundation structures such as the piers and abutments of the Bailey bridge have uneven settlement. If the foundation is found to have obvious sinking or tilting, timely measures should be taken to reinforce or adjust it.
- **Check foundation stability**: Observe whether there is water accumulation around the foundation, hollowing caused by erosion, and check whether the connection between the foundation and the surrounding soil or structure is firm.

Structural inspection
- **Check Bailey plate connection**: Carefully check the connection parts of each Bailey plate to check whether the pins, bolts and other connectors are loose, falling off or damaged. If there is any looseness, tighten or replace it in time.
- **Check the bridge deck**: Check whether the bridge deck has cracks, deformation, warping or displacement. If damage is found, it should be repaired or replaced in time.
- **Check overall structural deformation**: Observe the overall shape of the Bailey bridge from a distance to check whether there is obvious deformation, twisting or tilting. If there is any abnormality, further check the cause and take corresponding reinforcement measures.

Accessories inspection
- **Check wind-resistant tie rods**: Check whether the wind-resistant tie rods are firmly installed, whether they are loose or damaged, and ensure that they can effectively resist the impact of wind on the bridge.
- **Check U-bolts**: Check whether the U-bolts are loose, falling off or damaged, and promptly install and restore the parts where the bolts and nuts fall off.

Safety facility inspection
- **Check warning signs**: Check whether the warning signs at both ends of the bridge and on the bridge are complete and clear. If they are falling off or damaged, they should be replenished and repaired in time.
- **Check guardrails**: Check whether the guardrails are firm, whether they are damaged or deformed, and ensure that they can effectively prevent people and vehicles from falling.

Other inspections
- **Check drainage conditions**: Check whether the drainage facilities around the bridge are unobstructed and whether there is water accumulation. If there is water accumulation, the drainage channel should be cleaned in time to prevent the water accumulation from causing further erosion to the bridge foundation and structure.
- **Check the bridge deflection**: Use professional equipment to measure the mid-span deflection of the bridge to see if it has increased. An increase in deflection may indicate that there are certain problems with the bridge structure, and further analysis of the cause and corresponding measures need to be taken.

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