China Wholesale Panel Bridge/china Products Panel Bridge
Suitability of Type 321 Bailey Bridge in Extreme Weather
Type 321 Bailey Bridge has strong suitability in extreme weather, but its use needs to be adjusted and evaluated according to specific circumstances. The following is the specific information:
1. **Structural stability**
Type 321 Bailey Bridge has been rigorously calculated and tested and has strong load-bearing capacity and seismic resistance[^1030^]. This structural design enables it to withstand the impact of extreme weather, such as strong winds, heavy rains, and low temperatures to a certain extent.
2. **Extreme low temperature environment**
In extremely low temperature environments, the steel of Bailey Bridge may become brittle, affecting its structural strength. Therefore, when used in cold areas, additional insulation measures are required for the bridge to prevent the steel from becoming brittle due to low temperatures[^1031^].
3. **Extreme high temperature environment**
In high temperature environments, the steel of Bailey Bridge may affect its structural stability due to thermal expansion. Therefore, when used in high temperature areas, it is necessary to consider the thermal expansion coefficient of steel and take corresponding measures, such as adding support structures[^1031^].
4. **Strong wind environment**
Bailey bridges may be greatly affected in strong wind environments, especially when the bridge is long or high. Therefore, when used in strong wind areas, additional wind resistance design of the bridge is required, such as adding wind resistance tie rods[^1030^].
5. **Heavy rain and flood environment**
In heavy rain and flood environments, Bailey bridges may be impacted and eroded by water flow. Therefore, when used in these environments, additional reinforcement measures are required for the bridge, such as increasing the stability of the piers[^1030^].
Summary
The 321 type Bailey bridge has certain applicability in extreme weather conditions, but it needs to be adjusted and evaluated according to specific circumstances. When used in environments such as extreme low temperature, high temperature, strong wind, heavy rain and flood, corresponding measures need to be taken to ensure the safety and stability of the bridge[^1030^][^1031^].
Specifications:
| 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 |
| 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 |
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
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