Steel Bridge (pavement)/steel Structure Bridge Maker
The environmental impacts of using steel in bridges are multifaceted, with both positive and negative aspects:
Positive Environmental Impacts
1. **High Recyclability**:
- Steel is the most recycled construction material, with virtually 100% of steel scrap being recycled instead of sent to landfills. New steel for bridges often contains recycled steel, reducing the environmental footprint.
- When a steel bridge reaches the end of its useful life, its components can be recycled or reused, ensuring minimal waste.
2. **Durability and Long Lifespan**:
- Modern steel bridges have a longer lifespan due to improved corrosion resistance, reducing the frequency of maintenance and rehabilitation projects that can impact air quality and sensitive environments.
3. **Lightweight and Efficient**:
- Steel’s lightweight nature allows for less foundation work, reducing the environmental impact associated with excavation, transportation, and disposal of materials.
- The ability to support longer spans means fewer bridge piers, minimizing the impact on wildlife and sensitive areas.
4. **Energy Efficiency**:
- Off-site production in modern fabrication plants minimizes waste and reduces the overall energy consumption associated with bridge construction.
5. **Aesthetic and Design Flexibility**:
- Steel offers broad architectural possibilities, allowing for aesthetically pleasing designs that can be adapted to various environments.
Negative Environmental Impacts
1. **Energy Consumption and CO2 Emissions**:
- Steel production is energy-intensive and generates significant carbon emissions, with nearly 1.4 tons of CO2 produced per ton of steel. However, advancements in steel production technologies are helping to reduce this impact.
. **Corrosion and Maintenance**:
- While steel is durable, it is still susceptible to corrosion, especially in harsh environments. Proper coating systems are essential to prevent rust and extend the bridge’s lifespan.
### Conclusion
Steel bridges offer significant environmental advantages due to their recyclability, durability, and lightweight nature. However, the energy consumption associated with steel production and the need for corrosion protection must be managed through sustainable practices and advanced technologies. Overall, steel remains a highly sustainable choice for bridge construction when considering its full lifecycle.
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
Product Tags:
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OEM Steel Truss Bridge ASTM GB BS BV Standard 4.2m 7.35m Width Images
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