Temporary Emergency Panel Bridges/temporary Emergency Mabey Panel Bridges

Performance of Type 321 Bailey Bridge in Emergency Situations

Type 321 Bailey Bridge performs well in a variety of emergency situations, especially in scenarios that require rapid construction and disassembly. The following are specific application cases and performance:

1. **Flood relief**
During flood relief, Type 321 Bailey Bridge can quickly build temporary passages to ensure the passage of rescue materials and personnel. For example, in a flood relief drill in Yulin City, 21 emergency rescue team members successfully erected a Type 321 Bailey Bridge with a single span of 12 meters long and 3.75 meters wide in just one and a half hours. This rapid construction capability makes it an ideal choice for responding to natural disasters such as floods.

2. **Earthquake relief**
During earthquake relief, Type 321 Bailey Bridge can quickly build temporary bridges to ensure the passage of rescue materials and personnel. Its high load-bearing capacity and rapid construction characteristics make it a key tool in rescue work[^1000^]. For example, during the 2008 Wenchuan earthquake, a large number of Type 321 Bailey bridges were used for disaster relief, ensuring the forward transportation of earthquake relief materials, the evacuation of the wounded, and the evacuation of the masses.

3. **Military transportation**
The Type 321 Bailey bridge was originally designed for military purposes and is widely used in military transportation and combat readiness projects. Its rapid erection and disassembly characteristics make it an important equipment in military projects [^1001^]. During military operations, the Type 321 Bailey bridge can quickly build temporary bridges to ensure the passage of military vehicles and personnel.

4. **Traffic engineering**
In traffic engineering, the Type 321 Bailey bridge can be used to quickly build temporary bridges to ensure the continuity of traffic. It can be used to cross obstacles such as rivers, gullies, and broken bridges to ensure the passage of vehicles and personnel [^1003^]. For example, in a certain project, 321-type Bailey bridges were used as the main beams, with a 6-row single-layer top-bearing structure and a designed traffic load of 100 tons.

5. **Municipal water conservancy projects**
In municipal water conservancy projects, 321-type Bailey bridges can be used to build construction channels, temporary bridges, etc. Its high load-bearing capacity and rapid construction make it an important tool in water conservancy projects [^1005^]. For example, in a municipal water conservancy project, 321-type Bailey bridges were used to build construction channels to ensure the smooth transportation of construction materials and equipment.

Summary
Due to its rapid construction, high load-bearing capacity, strong adaptability and versatility, 321-type Bailey bridges have played an important role in various emergency situations such as flood control and rescue, earthquake rescue, military transportation, transportation engineering and municipal water conservancy projects, providing strong support for rescue work. These characteristics make it an ideal choice for responding to various complex engineering needs.

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

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.