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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