Galvanized Prefabricated Steel Truss Bridge Pontoon Bailey Bridge In India

Pontoon Bailey Bridge/the Bailey Bridge In India

In the reinforcement of Bailey bridges in mountainous areas, **prestressed reinforcement method** and **external steel reinforcement method** are the most commonly used methods. These two methods are widely used in actual projects and have significant effects.

1. Prestressed reinforcement method
The prestressed reinforcement method enhances the bearing capacity and stability of the bridge by applying prestress in the bridge structure. This method is very common in the reinforcement of Bailey bridges in mountainous areas. The specific steps include:
- **Tie rod straightening and adjustment**: Straighten and adjust the prestressed tie rod before installation to ensure that the tie rod size and installation position are accurate.
- **Welding joint and screw inspection**: Perform quality inspection on welding joints, screws, nuts, etc. to ensure that they meet the design requirements.
- **Prestressed tensioning**: After temporarily fixing the two ends of the tie rod with bolts, prestressed tensioning is performed to ensure that the tie rod can withstand sufficient tension.
- **Filling and anti-corrosion treatment**: Use high-strength epoxy mortar or cement mortar to fill the gap between the tie rod and concrete, and apply anti-rust paint to the tie rod for anti-corrosion treatment.

2. External steel reinforcement method
The external steel reinforcement method is to wrap angle steel or steel plate on the surface of concrete foundation or bridge pier to enhance the bearing capacity and stability of the structure. This method is particularly effective in complex terrain in mountainous areas. The specific steps include:
- **Surface treatment**: Grind the concrete surface to ensure that the surface is flat, 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.
- **Steel plate rust removal and cleaning**: Rust removal of steel plate, and use or xylene to clean the steel plate and concrete surface.

3. Other commonly used reinforcement methods
In addition to the above two methods, there are some other reinforcement methods that are also commonly used in Bailey bridges in mountainous areas:
- **Concrete foundation reinforcement**: In mountainous areas, concrete foundation reinforcement is one of the commonly used methods. By pouring concrete foundation, the load of the bridge can be effectively dispersed and the impact of terrain changes on the bridge can be reduced.
- **Diagonal support reinforcement**: Install diagonal supports on both sides or key parts of the Bailey bridge, and connect them by welding or bolting to ensure a firm connection between the diagonal supports and the main structure of the bridge, thereby enhancing the lateral stability of the bridge.

4. Basis for selecting reinforcement methods
When selecting a specific reinforcement method, it is necessary to comprehensively consider the actual conditions of the bridge, including:
- **Topographic conditions**: The terrain in mountainous areas is complex, and the foundation reinforcement method needs to adapt to different geological conditions.
- **Load requirements**: Select a suitable reinforcement method based on the use requirements and load conditions of the bridge.
- **Construction conditions**: Consider the on-site construction conditions and available resources, and select a reinforcement method with low construction difficulty and significant effect.

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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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

Introduction to Jiangsu Zhonghai Bridge Equipment Co., Ltd.
Jiangsu Zhonghai Bridge Equipment Co., Ltd., established in 2010, is a high-tech enterprise specializing in the research, development, manufacturing, and sales of bridge equipment. With a registered capital of 55 million yuan, the company boasts a modern production base and advanced manufacturing facilities, achieving an annual output exceeding 60,000 tons. Its products are widely used in major bridge projects and transportation infrastructure construction both domestically and internationally.
The company consistently prioritizes technological innovation, supported by a skilled R&D team and long-term collaborations with renowned universities and research institutions. By continuously adopting and assimilating international advanced technologies, the company has achieved remarkable results in the fields of bridge steel structures, bridge construction equipment, and bridge inspection equipment. Multiple products have obtained national patent certifications and have been awarded provincial and municipal science and technology progress prizes.
In terms of production management, the company strictly adheres to the ISO9001 quality management system to ensure stable and reliable product quality. With exquisite craftsmanship and a rigorous approach, the company’s products have earned an excellent reputation in the market, serving clients across the country and exporting to regions such as Southeast Asia, the Middle East, and Africa.
Jiangsu Zhonghai Bridge Equipment Co., Ltd. adheres to the business philosophy of “Quality First, Service Excellence,” committed to providing high-quality products and comprehensive services to its clients. Looking ahead, the company will continue to increase investment in R&D, enhance its core competitiveness, and contribute to the development of China’s bridge construction industry, striving to become a global leader in the bridge equipment sector.