Composition and Classification
Composition: The platform structure typically consists of deck boards, main and secondary beams, columns, inter-column supports, as well as ladders, railings, etc.
Category:
Indoor and outdoor platforms, static and dynamic load-bearing platforms, production auxiliary platforms, as well as medium and heavy-duty operational platforms, can be categorized according to usage requirements.
According to the different treatment methods of the support, the platform structure can also be divided into:
Platforms directly mounted on triangular brackets or pony walls of factory columns, typically used as safety walkways or as a simple medium-sized operational platform.
A platform supported on one side by a factory column or building wall, and on the other side by an independent column.
Platform supported by large equipment.
All are independent platforms.
For platforms supporting significant dynamic loads or heavy equipment, it is advisable to design them to be disconnected from the factory columns and directly supported by independent columns.
Platform structure layout
Meets the requirements for process production operations, ensuring clearances for passage and operation. The general minimum clear height for passage should not be less than 1.8M. Protective railings should be installed around the platform perimeter, typically standing at 1M in height. When the platform height exceeds 2M, a toe board of 100-150mm in height should be placed under the protective railings. A ladder for ascending and descending should be provided on the platform, with a minimum width of 600mm.
When determining the flat dimensions, elevation, beam grid, and column layout of the platform structure, in addition to meeting the usage requirements, the arrangement of beams and columns should also consider the location of equipment loads and other significant concentrated loads on the platform, as well as the suspension of large-diameter industrial pipelines.
The arrangement of the platform structure should strive for economic and reasonable efficiency, with direct and clear force transmission. The layout of the beam grid should match its span. When the beam span is large, the spacing between them should also be increased. Make full use of the allowable span of the deck plates, and reasonably arrange the beam grid to achieve better economic results.
Safety Maintenance
1. Steel platforms should be equipped with load limit signs.
2. The support points of the steel platform and the upper tie points must be located on the building structure and must not be set on scaffolding or other construction facilities. The support system must not be connected to the scaffolding.
3. The concrete beams at the steel platform's support points should be embedded with fittings and connected to the platform with bolts.
4. The horizontal angle between the wire rope and the platform should ideally be between 45° and 60°.
5. The beams and columns at the tie nodes on the upper part of the steel platform should be checked for tensile strength to ensure the safety of the building and the platform.
6. When constructing steel platforms, use latches; hooks should not be directly attached to the platform's lifting rings.
7. During the installation of steel platforms, the steel wire ropes should be securely fastened with hooks. If other methods are used, there should be no fewer than 3 clips. Soft padding should be added at the sharp corner of the building where the steel wire rope is wrapped. The outer edge of the steel platform should be slightly higher than the inner side.
8. The steel platform must have fixed guardrails on both sides and be equipped with a dense safety net.
Advantages and Disadvantages of Steel Platforms
Modern steel structure platforms come in various structural forms and are fully equipped with functions. Their characteristic is a fully assembled structure, with flexible design that allows for customization based on different on-site conditions. Steel platforms that meet the specific requirements of the site, usage functions, and logistics needs can be designed and manufactured. They are widely used in modern storage facilities.
In today's society, land is becoming increasingly valuable and scarce. How to fit as much cargo as possible within limited space is a concern for many merchants. With the advancement of the times, steel has become widely used, and structures primarily made of steel are one of the main types of building structures currently in use. Steel structures, with their own characteristics, are dominating the market.
One of its features is that steel has high strength, light self-weight, and great rigidity, making it particularly suitable for constructing large-span and ultra-high, ultra-heavy structures.
Secondly, steel structures possess good homogeneity and isotropy of materials, making them ideal elastic bodies that comply with the basic assumptions of general engineering mechanics. They are a rare ideal building material.
Thirdly, its material has good plasticity and toughness, allowing for significant deformation, thus it can withstand dynamic loads effectively. Many large-scale buildings, primarily constructed with steel structures, are located in Suzhou, which also primarily feature steel structures.
Fourth, short construction period: A 300-square-meter building can be completed from construction to decoration in just one month with only five workers and 30 working days, saving costs, time, and labor!
Fifth, steel structure buildings have a high degree of industrialization and mechanization, allowing for specialized production, enhancing work efficiency, and reducing construction complexity. They are highly compatible with the current fast-paced, energy-saving society.
Sixthly, the drawback is the poor resistance to fire and corrosion.
Steel structures are primarily used for load-bearing frames in heavy industrial workshops, factory structures subjected to dynamic loads, plate and shell structures, tall television towers and masts, large-span structures such as bridges and warehouses, as well as high-rise and ultra-high-rise buildings.
