What are pedestrian walkway crossbeam supports?
Pedestrian walkway crossbeam support, or in short, walkway crossbeams, side walk crossbeams, are primarily used to support pedestrian walkways in bridges or other specialized building structures. It is not a type of embedded part, instead it is a prefabricated structural member in bridge construction projects. In bridges, these crossbeams are installed transversely beside the supporting structures, such as the main beams (such as plate beams, steel box girders, or steel truss girders) are the core structures bearing train loads.
Pedestrian walkway crossbeams are secondary beams that connect vertically or inclined to the main beams. One end connects to the main beam, while the other end cantilevers outwards, upon which pedestrian walkway panels, railings, etc., are laid. Together they form a complete pedestrian walkway system, which provides a safe and stable surface for pedestrians. These crossbeams are made of high-strength steel with proper surface treatment and can withstand a certain weight.
Features of Pedestrian Walkway Crossbeam Support
The early support structure for pedestrian walkway crossbeams are steel angle brackets, now engineers use of high-strength low-alloy steel welded into a sidewalk steel structure to replace the traditional triangular steel support. For this cross-beam structure, this can effectively increase the load-bearing area and improve the load-bearing capacity of the pedestrian walkway structure.
- Maintenance-free: crossbeam has a corrosion-resistant lifespan of over 30 years throughout its entire life cycle, also featuring with simple structure and easy installation.
- Scope of Application: Walway crossbeams are used for simply supported T-beam pedestrian walkways for various types of railway bridges with speeds of 160–200 km/h
Custom Fabrication of Pedestrian Walkway Crossbeam Support
AGICO has rich experience in supplying customized crossbeam support members for pedestrian walkway systems of bridge projects. The crossbeam section is an extended part of the bridge structure made of structural steel plates. AGICO can manufacture various sizes of walkway crossbeams according to the drawings from customer.
Walkway Crossbeam Support Specifications
- Steel Member Name: Crossbeam for Pedestrian Walkway
- Dimensions: Custom-made according to provided drawings
- Steel Material: Q235B, Q345B (Multiple materials available upon request)
- Surface treatment: Multi-element alloy co-diffusion + passivation
- Product applications: High-speed railway bridges, viaducts, rail transit, building components
Benifites of Using steel Walkway Crossbeam
AGICO supplies embedded T section plate fabricated according to the following standards or customer requirements and drawing
- Sturdy And Durable: Steel crossbeam structures have extremely high load-bearing capacity and durability, ensuring the safety of bridges during long-term use.
- Easy to Construct: Steel processing and fabrication are simple, and on-site installation is quick and efficient, which can greatly improve the construction progress.
- Recyclable Material: Steel has good recyclability, and its production and use emphasize energy conservation and emission reduction, which is in line with the concept of sustainable development.
- Integrated Design: The pedestrian walkway system design incorporates landscape elements, enhancing the overall aesthetic value of the bridge and making it a new urban landmark.
Walkway Crossbeam Support Structure and Connections:
The walkway crossbeam support structure consists of a support plate, a bent plate, and a top plate. The support plate is arranged vertically, and the bent plate is fixedly installed at the lower end of the support plate. The top plate is rectangular in shape and is fixedly mounted on the upper end of the support plate. An angle steel mounting base is fixedly mounted on the upper end of the top plate. Multiple cylindrical studs are fixedly installed at the top of the top plate. It is a simple, easy-to-install, safe and reliable steel crossbeam for sidewalks.
Crossbeam Connections
- Connection between steel crossbeams and bridge deck: Ensure a secure connection between the steel crossbeams and the bridge deck to prevent them from falling off or vibrating.
- Connection between steel beams and supports: The connecting components are connected with high-strength bolts to ensure load-bearing capacity and seismic performance.
- Internal connections of steel beams: The steel beams are internally welded to ensure the integrity and stability of the overall structure.
Installation of Steel Crossbeams For Walkways
- Before crossbeam install, the construction team should complete the preparatory work. First, workers should go to the site to check bolt hole locations, to see if the reserved bolt holes on the bridge pier match the drawings and meet the construction requirements. After this step, worker shall clean debris and water inside the bolt holes. The bolt holes shall have no water and debris, and the hole walls should be dry and free of moss, this step is to ensure the poured concrete can bond tightly with the existing concrete on the pier.
- The processed crossbeams and other necessary materials are distributed to various construction sites in advance.
- Fix the crossbeams to the holes of pre-embedded plate and tighten it with structural steel bolts.
AGICO also supplies 8.8 and 10.9 grade hex bolts for crossbeam installation, if you are interested in pedestrain walkway solutions, don’t hesitate to send a free quote now!
Walkway Crossbeam Materials and Manufacturing Process
The manufacturing process for crossbeam support for walkways generally involves following steps: laser cutting and welding of steel plates, shot blasting, and multi-element powder co-diffusion + passivation + sealing treatment of the metal surface. Q235 steel is commonly used steel grade, if the project has higher requirements, other specific steel grades can be processed according to customer requirements.
Steel Materials: Typically the same as the main structure, using bridge-specific structural steel such as Q345qD or Q370qD. This type of steel possesses good strength, toughness, and weldability, and can withstand harsh outdoor environments.
- Plate Cutting: Use laser cutting machine to cut steel plates into pieces according to the dimensional requirements of the drawing.
- Assembly and Welding: Then assemble the web plates and flange plates one by one into an I-shape on a specialized jig, and weld it into one piece, the main welds are completed using automatic or semi-automatic welding (such as submerged arc welding).
- Drilling For Bolt Holes: High-precision bolt holes are drilled in the connecting plates using a CNC drilling machine, the precision can influnece smooth bolt installation on site.
- Corrosion Protection Surface Treatment: Hot-dip galvanizing or a Multi-alloy co-infiltration + passivation is typically used. This is a crucial step for anti-corrossion ensuring service life of the crossbeam.
Walkway Crossbeam Support Production Workshop
Note: This process is specifically designed for AGICO’s railway concrete beam anti-corrosion accessories, ensuring the durability and corrosion resistance of the embedded plate part.
