Design standard for metal roof system

 The application of the metal roof plate enclosure system has a long history abroad, and its product selection and technical standard system are relatively complete.

In 1996, Britain officially implemented the "Technical Specifications for the Application of Voltage Metal Plate Plates" (BS 5427-1). method. In addition, the industry manual or guidance documents formulated by research institutions or industry associations in some regions and countries have important guiding significance for the design and application of the metal enclosure structure. The more influential industry standards are the series of technical documents of the metal outer surrounding structure manufacturer association in the European region and the metal building system manual of the North American Metal Building Manufacturer Association.

Our country has also continuously compiled national product standards such as "Building Voltage Steel Plate", "Aluminum and Aluminum Alloy Polying Plates", and "Metal Platform Plate for thermal insulation". At the same time, the improvement of national technical standards, the "Technical Specifications of Slope Roof Engineering" and "Technical Specifications for the Application of Voltage Metal Board" specifications will be more conducive to the application and development of metal roof technology.

Arched corrugated steel roof gable wind resistance column

The gable wind-resistant columns can be designed according to the conventional design. Under normal circumstances, the metal arch corrugated roof project should be closed. In the open or semi-open situation, due to the uncertainty of the wind load of the roof and the substructure, the connection between the metal arched corrugated roof and the substructure is generally hinged or fixed. According to the simplified calculation model, the design of the substructure is much simpler compared to the conventional structure. The ring beam, column (wall) and foundation of the lower structure are designed according to the bearing reaction force calculated by the upper arch corrugated steel roof structure analysis, and the whole structure can be simplified as a series of statically indeterminate members for analysis, calculation and design.

The arched corrugated steel roof situation is more complex and difficult to predict. At this time, part of the gable above the ring beams at both ends of the roof should be closed, and wind-resistant columns should be set up if necessary. On the one hand, it can beautify the architectural effect of the roof, and more importantly, it increases the overall stiffness of the roof and increases its wind resistance.

Such as the waterproof and anti-corrosion treatment of the arch foot point of the arched corrugated steel roof structure, the setting of the lighting belt and the ventilation cap and the node treatment, thermal insulation, lightning protection and fire prevention, etc.

Large-span Complex Steel Structure Construction Characteristics

SAFS Steel Structure Engineering Co. LTD would like to introduce the construction characteristics of large-span complex steel structures here.

Firstly, it is of a high construction difficulty. For engineering projects that apply large-span complex steel structures, they usually have the characteristics of large space ratio, large project scale, huge workload of related projects, and large amount of engineering materials and components required and so on. This shows the difficulty and complexity in engineering construction. Due to different material components, there are many differences in structure, form, size, etc., so it will be more difficult to set out in specific construction.

Secondly, it requires high installation accuracy. Under normal circumstances, the large-scale large-span complex steel structure project is mostly a project undertaken by the government, which means that the project completion degree of the project will be reflected in the society as a kind of construction level, so the requirements for the construction of related projects are numerous and strict. For example, in the installation and processing of components, the accuracy of the relevant steps must be refined within the relevant regulations, and the joint construction must be carried out in strict accordance with the national welding seam indicators, so as to ensure that the welding seam effect and installation accuracy.

Large-span complex steel structure projects have strict requirements on construction materials in modern buildings, because they involve many aspects. In order to carry out the normal orderly construction work, the quality and strength of the steel are increasingly stringent in the steel selection process.

Large-span steel structures also require prestressing technical support. In the construction industry, prestressing technology is a vital technology to ensure the quality of design and construction work. In large space and complex steel structures, prestressing technology is mainly used in cable-membrane, cable dome, and overall expansion and contraction in innovative structural buildings.

Steel structure space frame building - the pillar of future construction technology

       A new type of building system of steel structure building has the industry boundaries between the real estate industry, construction industry and metallurgical industry, and is integrated into a new industrial system. This is the steel structure building system that is generally optimistic about the industry.

Compared with traditional concrete buildings, steel structure buildings replace reinforced concrete with steel plates or profiled steels, which have higher strength and better earthquake resistance. And because the components can be manufactured in factories and installed on site. Therefore, the construction period is greatly reduced. Due to the reusability of steel, construction waste can be greatly reduced, and it is more green and environmentally friendly. Therefore, it is widely used by countries all over the world and is used in industrial buildings and civil buildings.

Take the stadium space frame as an example. The stadium refers to a 400-meter runway (including a football field in the center) with fixed road teeth. Outdoor track and field venues with more than 6 runways and fixed stands. The site area is huge, and the roof is usually a transparent semi-closed structure. The stadium space frame structure has good integrity, high rigidity and good seismic performance, and can create a large-span column-free space, which is widely used in small and medium-sized stadium projects. In large-scale stadium projects, it is necessary to form a composite structural system with other types of structures to play their respective advantages. After careful and strict anti-corrosion and fire-proof treatment, the space frame parts are basically maintenance-free within the service life, and the cost performance is very high.

At present, the application of steel structure buildings in high-rise buildings is becoming more and more mature, and it has gradually become the mainstream construction technology, which is the development direction of future buildings.