Large Span Steel Strucutre

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Product Description:

Steel Structure Building

1.the connection method of steel structure:

   welding connection or bolt connection

2.Steel structure design common norms are as follows:

  • "Steel Design Code" (GB50017-2003)

  • "Cold-formed steel structure technical specifications" (GB50018-2002)

  • "Construction Quality Acceptance of Steel" (GB50205-2001)

  • "Technical Specification for welded steel structure" (JGJ81-2002, J218-2002)

  • "Technical Specification for Steel Structures of Tall Buildings" (JGJ99-98)

3.The characteristics of steel

  • Light weight steel structure

  • Higher reliability of steel work

  • Steel anti-vibration (earthquake), impact and good

  • Steel structure for a higher degree of industrialization

  • Steel can be assembled quickly and accurately

  • Large steel interior space

  • Likely to cause sealing structure

  • Steel corrosive

  • Poor fire-resistant steel

  • Recyclable steel

  • Steel shorter duration

4.Commonly used steel grades and performance of steel

  • Carbon structural steel: Q195, Q215, Q235, Q255, Q275, Q345,etc.

  • High-strength low-alloy structural steel

  • Quality carbon structural steel and alloy structural steel

  • Special purpose steel

5.Market:

Products have been all over the country more than 20 provinces, municipalities and autonomous regions, and have been exported to Europe, North America, the Middle East, Africa, Asia and other countries and regions, the widespread use

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Q:What kind of material test is necessary for steel structure engineering?
Steel structure engineering needs the steel structure raw material (steel plate) test, testing, welding test, welding seam without damaging the ball and a bolt ball test, fire coating test, deflection detection of these almost.
Q:What are the main structures and sub structures in the steel structure?
Briefly, such as a column, a beam, a beam, a braceThe main load-bearing structure of the column, beam and so on is the main structureThe beam, the bracing, etc. are the structures
Q:What does the construction of steel sub sections mean? What is the difference between a sub branch and a branch? How to divide the sub items?
Divisional Engineering: according to the type or main part of the project, the unit project is divided into sub project. Such as: basic engineering, main project, electrical engineering, ventilation engineering, etc.
Q:What does the steel structure lug 2-240*290*12 mean?
The characteristics of the steel is of high strength, light weight, good integral rigidity, deformation ability, it is used in the construction of large span and super high and super heavy buildings especially suitable; homogeneous and isotropic material, an ideal elastic body, the most consistent with the basic assumption of the general engineering mechanics; material has good plasticity and toughness that can have large deformation, can well withstand dynamic loads; short construction period; the high degree of industrialization, can carry out specialized production of high mechanization degree. Steel structure of high strength steel, greatly improve the yield strength of steel rolling; in addition to the new varieties, such as H steel (also called wide flange steel) and T shaped steel and steel plate to meet the needs of a large span structure and high-rise building.
Q:The difference between steel structures
In the subdivision, such as steel structural column: H steel column, lattice steel column, variable section steel column, box shaped steel column.Steel structure beam: H steel structure beam, lattice steel structure beam, variable section steel structure beam, box type steel structure beam, crane beam.
Q:Why steel structure is adopted in super high-rise buildings?
High strength, light weight and rigidity; homogeneous and isotropic material, an ideal elastic body, the most consistent with the basic assumption of the general engineering mechanics; material has good plasticity and toughness, and can have large deformation, can well withstand dynamic loads; short construction period; the high degree of industrialization, can professional production of high mechanization degree;
Q:How to calculate the allowable slenderness ratio of steel structures under compression?
It can be seen from the formula that the concept of slenderness ratio takes into account the end constraint of the component, the length of the component itself and the section characteristics of the component.The effect of slenderness ratio on the stability calculation of compressive members is obvious, because the larger the slenderness ratio is, the more easily it is unstable. Here are some formulas for calculating axial and flexural members. There are parameters related to slenderness ratio.
Q:What are the connecting forms of steel structures? What are the characteristics of each?
Welding is the heat generated by the arc, the electrode and welding parts of local melting. After cooling into the welding seam, so that the welding piece is connected as a whole. The advantages are: the component in any form can generally direct orange even, does not weaken the component section. The economic materials, simple structure, convenient manufacture, connection stiffness, good sealing performance, can realize automatic operation, high production efficiency. The disadvantage is due to the formation of steel; weld heat affected zone of high temperature welding, resulting in local brittle material. In the process of welding material is not uniform with high temperature and cooling, the structure of the welding residual stress and deformation of the structure bearing capacity, stiffness and performance have certain effect. In addition, due to the rigidity of welded steel structure, local cracks can easily spread to the whole as soon as they occur, especially brittle at low temperatures. Moreover, the plasticity and toughness of the welding are poor, and the defects may be caused by blasting, and the fatigue strength is reduced.
Q:What is the difference between a reinforced concrete structure and a steel concrete structure?
Steel structure with small weight, small stiffness, this time in the calculation of horizontal earthquake, earthquake will often than concrete structure, and its plasticity ability, at the time of the earthquake can absorb a large amount of energy, so the steel structure is better, but the steel structure is too soft, easy to produce a large horizontal displacement, and poor fireproof performance these are the concrete structure, than the poor areas
Q:How can the steel structure be laid with flame retardant PVC pipe?
The first group through the PVC tube and the PVC tube, steel wire hanging up this way in the fire and security are also relatively time-saving province cost way.

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