Constrcution Steel Bridge Temporary Steel Truss Bridge Steel Deck / Concrete Deck

Constrcution Steel Bridge/steel Panel Bridge

Bailey bridges have been used in environmentally sensitive areas to demonstrate their advantages in terms of rapid deployment, minimal environmental impact and strong adaptability. Here are some specific examples:

1. Emergency response after the Nepal earthquake (2015)
After the 2015 Nepal earthquake, Bailey bridges were quickly deployed to connect mountain villages isolated by the earthquake, ensuring that relief supplies and medical assistance could arrive in time. Its rapid assembly capability enabled relief organizations to restore critical transportation networks in a short period of time, significantly alleviating the suffering in the affected areas.

2. Flood response in Southeast Asia
In areas such as Bangladesh, Vietnam and the Philippines, frequent floods often damage bridges and lead to the isolation of communities. Bailey bridges provide a rapid alternative to ensure the continued distribution of relief supplies and evacuation routes for residents. Its tolerance to adverse weather conditions makes it play an important role in supporting the long-term recovery of vulnerable communities.

3. Reconstruction after the Haiti Earthquake (2010)
After the 2010 Haiti earthquake, Bailey bridges were critical in restoring connectivity, allowing reconstruction materials, medical aid, and essential supplies to be efficiently transported. Their rapid installation capabilities significantly contributed to Haiti’s infrastructure reconstruction and long-term economic recovery.

4. Eco-Sensitive Areas in Karnataka, India
In the Dakshina Kannada region of Karnataka, India, ecologically sensitive areas were identified using a combination of indicators. Bailey bridges were used in these areas to minimize impact on local ecosystems while providing necessary transport connectivity.

5. Rural Transport Improvement Project in Papua New Guinea
In the Central and West New Britain provinces of Papua New Guinea, Bailey bridges are being used to improve transport connectivity in rural areas. The project involves the replacement of 18 bridges, including Bailey and steel truss bridges. The use of Bailey bridges not only improves transport efficiency, but also reduces environmental impact.

Summary of Environmental Advantages
The application of Bailey bridges in environmentally sensitive areas demonstrates its significant environmental advantages:
- **Minimized land disturbance**: Bailey bridge installation generally requires less site preparation and foundation work, reducing disturbance to surrounding ecosystems.
- **Temporary deployment**: Bailey bridges are removable and repositionable so that they do not cause permanent changes to the landscape, reducing long-term environmental impacts.
- **Ecosystem protection**: With careful planning, Bailey bridges can protect local ecosystems and reduce habitat disturbance.
- **Resource efficiency**: Bailey bridges use materials (such as steel) that are durable and recyclable, reducing the need for new resources.

These cases and advantages show that Bailey bridges not only excel in emergency response and temporary transportation solutions, but also provide sustainable solutions in environmentally sensitive areas.

Specifications:

​

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

​​

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

​

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