Corrosion Resistance Sway Brace Metal Truss Bridge For Bailey Bridge 7.6m Width

Sway Brace For Bailey Bridge/offer Bailey Bridge

In complex mountainous terrain, the foundation reinforcement of Bailey bridges is a key step to ensure the stability and safety of bridges. The following are several common foundation reinforcement methods:

1. **Pile foundation reinforcement**
In mountainous areas, especially in river valleys or unstable terrain, pile foundation reinforcement can effectively improve the foundation stability of Bailey bridges. Specific methods include:
- **Pile foundation driving**: Drive steel pipe piles or concrete piles into the piers and abutments to ensure that the pile foundation is deep into the stable stratum and provides sufficient support.
- **Pile foundation connection**: Connect the support structure of the Bailey bridge to the pile foundation through welding or high-strength bolts to ensure the stability of the overall structure.

2. **Concrete foundation**
In mountainous areas, concrete foundation is a common reinforcement method, and the specific steps include:
- **Excavation foundation**: According to geological conditions, excavate a foundation pit of sufficient depth to ensure that the bearing capacity of the foundation meets the design requirements.
- **Pouring concrete**: Pouring concrete in the foundation pit to form a solid foundation. Concrete foundation can effectively disperse the load of the bridge and reduce the impact of terrain changes on the bridge.

3. **Prestressed reinforcement method**
The prestressed reinforcement method enhances the stability of the bridge through prestressed tie rods or support rods. In mountainous areas, this method can effectively cope with terrain changes and uneven settlement:
- **Tie rod adjustment**: Straighten and adjust the tie rods before installation to ensure the correct size and installation position of the tie rods.
- **Prestressed tensioning**: After the tie rods are installed, prestressed tensioning is performed to ensure that the tie rods can withstand sufficient tension and enhance the stability of the bridge.

4. **External steel reinforcement method**
The external steel reinforcement method enhances the bearing capacity and stability of the structure by wrapping angle steel or steel plates on the surface of the concrete foundation or bridge pier. This method is suitable for complex terrain in mountainous areas where the foundation surface is uneven or requires additional reinforcement:
- **Surface treatment**: Before reinforcement, the concrete surface is polished to ensure that the surface is flat and free of debris and dust.
- **Bonding and grouting**: Apply latex cement slurry or epoxy resin grouting material between the angle steel or steel plate and the concrete surface to enhance the bonding force.

5. **Diagonal support reinforcement**
In complex mountainous terrain, diagonal supports can effectively enhance the lateral stability of Bailey bridges:
- **Diagonal support installation**: Install diagonal supports on both sides or key parts of Bailey bridges, and connect them by welding or bolting to ensure a firm connection between the diagonal supports and the main structure of the bridge.
- **Adjustment and reinforcement**: According to the terrain and actual needs, adjust the angle and length of the diagonal support to ensure that it can effectively disperse the load and enhance the stability of the bridge.

Through the above methods, Bailey bridges can achieve effective foundation reinforcement in complex mountainous terrain to ensure the stability and safety of the bridge.

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