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CB100
Double lane modular bridges are specialized modular structures designed to accommodate two-way vehicle traffic, blending the speed and adaptability of modular construction with the capacity needed for light to moderate traffic volumes. Unlike single-lane modular bridges or permanent double-lane spans, these bridges prioritize rapid deployment, adjustable width, and reusability—making them ideal for emergency road repairs, construction detours, rural infrastructure upgrades, and disaster recovery.
The core design of double lane modular bridges centers on standardized, interlocking components. Typically made of high-strength steel or aluminum, the modules include wide deck panels (each spanning 3–4 meters to form a total lane width of 3.5–4 meters per lane), reinforced truss or beam supports, and universal connectors. These components are prefabricated in factories, ensuring precision: deck panels align seamlessly to create a smooth, continuous surface, while support modules interlock to form a stable framework that can withstand the weight of cars, trucks, and small commercial vehicles (up to 20–30 tons per lane). The modular nature also allows for easy width adjustments—extra deck modules can be added to widen lanes or include a central median for safety.
Speed of deployment is a defining advantage. A crew of 6–8 workers with basic heavy machinery (like cranes or forklifts) can assemble a 50-meter double lane modular bridge in 2–3 days—far faster than the weeks or months needed for permanent double-lane bridges. This speed is critical in emergencies: after floods or earthquakes damage highway bridges, double lane modular spans restore two-way traffic quickly, reducing congestion and ensuring essential services (like ambulances or delivery trucks) can move freely. For construction projects, they serve as temporary detours, keeping local traffic flowing while permanent bridges are renovated or replaced.
Versatility across scenarios enhances their value. In rural areas, where road infrastructure is often limited, double lane modular bridges can replace narrow, aging single-lane spans, supporting growing agricultural or residential traffic. In urban settings, they can be deployed as temporary crossings during large events (like festivals or marathons) to manage increased vehicle flow. Many models also include safety features like guardrails, reflective markers, and non-slip decking, meeting standard traffic safety requirements for long-term temporary use.
Sustainability and cost-effectiveness further set them apart. Components are reusable—after their initial use, bridges can be disassembled, transported to new sites, and reassembled, reducing material waste. Compared to permanent double-lane bridges, they have lower upfront costs and require minimal maintenance, making them a budget-friendly choice for short to medium-term traffic needs.
Double lane modular bridges fill a critical gap in traffic infrastructure: they deliver the capacity of permanent double-lane spans with the flexibility of modular design, ensuring two-way traffic can keep moving—even in urgent, transitional, or resource-constrained situations.
| 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 |
Double lane modular bridges are specialized modular structures designed to accommodate two-way vehicle traffic, blending the speed and adaptability of modular construction with the capacity needed for light to moderate traffic volumes. Unlike single-lane modular bridges or permanent double-lane spans, these bridges prioritize rapid deployment, adjustable width, and reusability—making them ideal for emergency road repairs, construction detours, rural infrastructure upgrades, and disaster recovery.
The core design of double lane modular bridges centers on standardized, interlocking components. Typically made of high-strength steel or aluminum, the modules include wide deck panels (each spanning 3–4 meters to form a total lane width of 3.5–4 meters per lane), reinforced truss or beam supports, and universal connectors. These components are prefabricated in factories, ensuring precision: deck panels align seamlessly to create a smooth, continuous surface, while support modules interlock to form a stable framework that can withstand the weight of cars, trucks, and small commercial vehicles (up to 20–30 tons per lane). The modular nature also allows for easy width adjustments—extra deck modules can be added to widen lanes or include a central median for safety.
Speed of deployment is a defining advantage. A crew of 6–8 workers with basic heavy machinery (like cranes or forklifts) can assemble a 50-meter double lane modular bridge in 2–3 days—far faster than the weeks or months needed for permanent double-lane bridges. This speed is critical in emergencies: after floods or earthquakes damage highway bridges, double lane modular spans restore two-way traffic quickly, reducing congestion and ensuring essential services (like ambulances or delivery trucks) can move freely. For construction projects, they serve as temporary detours, keeping local traffic flowing while permanent bridges are renovated or replaced.
Versatility across scenarios enhances their value. In rural areas, where road infrastructure is often limited, double lane modular bridges can replace narrow, aging single-lane spans, supporting growing agricultural or residential traffic. In urban settings, they can be deployed as temporary crossings during large events (like festivals or marathons) to manage increased vehicle flow. Many models also include safety features like guardrails, reflective markers, and non-slip decking, meeting standard traffic safety requirements for long-term temporary use.
Sustainability and cost-effectiveness further set them apart. Components are reusable—after their initial use, bridges can be disassembled, transported to new sites, and reassembled, reducing material waste. Compared to permanent double-lane bridges, they have lower upfront costs and require minimal maintenance, making them a budget-friendly choice for short to medium-term traffic needs.
Double lane modular bridges fill a critical gap in traffic infrastructure: they deliver the capacity of permanent double-lane spans with the flexibility of modular design, ensuring two-way traffic can keep moving—even in urgent, transitional, or resource-constrained situations.
| 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 |
