Jiangsu Zhonghai Bridge Equipment Co.,LTD
Jiangsu Zhonghai Bridge Equipment Co.,LTD
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Temporary Portable Steel Bridge/steel Frame Bridge
According to the latest maintenance guidelines, the frequency of corrosion inspections for Bailey bridges generally depends on the use of the bridge and environmental conditions. General recommendations:
1. **Routine inspection**:
Perform a comprehensive visual inspection at least once a year, focusing on signs of corrosion on steel components. In high-salt environments or extreme climate conditions, the inspection frequency should be increased to once every six months.
2. **Detailed structural inspection**:
In addition to routine inspections, a detailed structural assessment should be performed every year or every two years, including the use of non-destructive testing methods such as ultrasonic testing to check for internal defects.
3. **Special situation inspection**:
Additional inspections should be performed immediately after major weather events (such as floods, hurricanes) or accidents (such as vehicle collisions).
Regular inspections and maintenance will not only extend the service life of Bailey bridges, but also ensure their safety and functionality in various environments.
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