Structural culverts
Structural culverts in precast concrete play a crucial role in modern infrastructure, providing durable and reliable solutions for transport infrastructure and other construction projects. Two innovative solutions stand out in this field: Reinforced Earth’s TechBox™ precast box culverts and Trapezoidal culverts. These concrete culverts are engineered to meet the demands of diverse construction projects, ensuring robust performance and efficient installation.
TechBox™ Culverts
TechBox™ precast structural culverts are concrete box culverts specifically designed for constructing strong and lasting structures such as concrete underpasses, culverts, and cut-and-cover passageways. Utilising precision-made segmental precast concrete sections, TechBox™ concrete box culverts ensure an efficient and safe installation process. This style of concrete culvert is ideal for projects requiring efficient deployment and long-term reliability.
Benefits of TechBox™ concrete box culverts
- Durability: Built with high-quality precast concrete for longevity.
- Efficiency: Precision-made sections enable quick and safe on-site installation.
- Versatility: Suitable for various applications including underpasses and passageways.
Trapezoidal Culverts
Trapezoidal culverts offer an innovative alternative to conventional culvert arch designs, making them suitable as precast concrete underpasses for pedestrians, fauna, stock, or small vehicles. The unique trapezoidal shape features sloped sides and a flat top section, which efficiently handles low cover while meeting design envelope requirements. This design provides a practical and aesthetically pleasing solution for various infrastructure needs.
Advantages of Trapezoidal precast culverts
- Design Flexibility: Meets design envelope requirements with a flat top section.
- Practicality: Ideal for low cover applications.
- Aesthetic Appeal: Provides a modern look for infrastructure projects.
Why Choose Our Concrete Culverts?
Choosing the right culvert is crucial for the success of your infrastructure project. Reinforced Earth’s precast concrete structural culverts offer:
- Superior Strength and Durability: Ensuring long-term performance.
- Flexibility: With both box culvert and trapezoidal design solutions offered by Reinforced Earth, our design engineers ensure the right solution is deployed for your project need.
- Cost-Effectiveness: Efficient installation reduces project times and labour costs.
- Compliance with Standards: Meets industry standards for safety and performance.
Applications
- Roadway and railway underpasses and overpasses
- Cut-and-cover tunnels of all types
- Large culverts
- Waterway channeling
- Rockfall protection shelters
For more information on how TechBox™ box culverts and Trapezoidal culverts can benefit your project, contact your local Reinforced Earth Australia office.
For further detail on the design, construction and installation of these structural culverts, read on below:
Design
The design is carried out using the finite element modelling method (FEM). Through this method, the concrete section sizes and reinforcement designs are optimised resulting in the thinnest, yet most durable sections possible. The FEM modelling analyses consider the following, but not limited to:
- Self weight of precast elements
- Applied bearing pressure
- Capacity of the foundation soils
- The sequence of installation
- Fill cover height effects
- Static loads and live loads
- Service life requirements
Manufacturing
Reinforced engineers and project managers are specialists in developing, manufacturing, handling and delivering precast concrete solutions on a worldwide basis. Precasting operations are performed in a quality-controlled plant environment, either offsite requiring transport or performed at the jobsite.
Our engineers will normally manage the design and fabrication of the specific precast forming moulds to precisely match with the optimised design of the TechBox™ sections. We analyse the project site conditions, schedule constraints, working crew sizes and availability of equipment, among other factors when developing the manufacturing activity sequence.
Installation
The units required to assemble a TechBox™ bridging section normally consist of three precast concrete segmental units: two full-height side wall units and a roof slab unit. The full-height side walls closely resemble our TechWall™ solution, although modified to include side stitch beams. The general steps for constructing TechBox™ include:
- Installation of full-height side wall units
- Placement of top “roof” slab units
- Casting or connecting the base slab
- Application of waterproofing, joint protection
- Staged backfilling up to the stitch level
- Casting of the side and top stitch beams
- Completion of backfilling and finishing
Since earth retaining structures are normally required for wing walls or spandrels, these are often built using Reinforced Earth®, TechWall™, T-Wall® or other retaining wall solutions designed and furnished by Reinforced Earth.
Benefits
Decades of precasting experience
Decades of precasting experience
Terre Armée has been operating and managing major precast concrete plant operations and concrete forming mold fabrication worldwide for nearly 50 years.
Durable
Durable
Due to its characteristics coupled with world-class engineering expertise, TechBox® has proven to be a very durable solution.
Jobsite safety
Jobsite safety
Using precast sections make it easier to organize safety at the jobsites through pre-planning and standardized procedures.
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