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CB100
In the realm of modern infrastructure, prefabricated steel truss bridges have emerged as a game-changing solution to meet the growing demand for efficient transportation. These bridges, constructed with pre-manufactured steel truss components assembled on-site, combine structural excellence with remarkable construction speed, making them indispensable for enhancing connectivity across urban, rural, and industrial landscapes.
The core advantage of prefabricated steel truss bridges lies in their accelerated construction timeline. Unlike traditional cast-in-place concrete bridges that require lengthy on-site curing and fabrication, steel truss components are precision-manufactured in factories under controlled conditions. This off-site production minimizes weather-related delays and reduces on-site labor requirements, allowing bridges to be assembled and operational in a fraction of the time. For example, a medium-span prefabricated steel truss bridge can often be installed within weeks, compared to months for conventional alternatives—critical for emergency repairs, disaster relief, or upgrading congested transportation routes.
Structurally, steel trusses offer exceptional strength-to-weight ratio, enabling the design of long-span bridges without excessive material usage. The triangular truss configuration distributes loads evenly, enhancing stability and durability even in harsh environments, such as seismic zones or coastal areas prone to corrosion. Advanced anti-corrosion treatments, including galvanization and weather-resistant coatings, extend the bridge’s service life to 75 years or more, reducing long-term maintenance costs and minimizing disruptions to traffic flow.
Moreover, prefabricated steel truss bridges align with sustainable transportation goals. Steel is highly recyclable, with most components made from recycled materials and fully recoverable at the end of the bridge’s life. The reduced construction period also lowers carbon emissions associated with on-site activities, while the bridge’s lightweight design minimizes the need for extensive foundation work, preserving natural landscapes and reducing environmental impact.
In applications ranging from highway overpasses and railway bridges to pedestrian crossings and industrial access routes, prefabricated steel truss bridges deliver unmatched efficiency. They ensure uninterrupted transportation flow during construction, support heavy loads (including commercial vehicles and trains), and adapt to diverse terrain conditions. As global infrastructure demands grow, these bridges stand as a reliable, cost-effective, and sustainable choice to build faster, stronger, and more efficient transportation networks.
| 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 |
