Steel Works

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Steel structure project is the third generation construction. It combines H section and c/z section into the frame with the profiled steel sheet or sandwich panel as the wal and roof. The traditional reinforced concrete construction has aready been taken place by this kind of construction in developed contries. It has many excellent charateristics such as light weight, larger span, less marerial, low cost, less foundation, short building cycle, safe, beautiful, ect. It is widely used in single industrial factory, warehouse, business construction, office, parking lots, residence and so on.


Steel structure office building  fabrication process:

1. Prepair raw materials : cut steel plate or use internation size H section steel and angle steel,round tube,round steel,square tube etc.;

2. Assembly and welding: our welders will follow the drawings to assembe the steel members and weld them together as a entire beam/column/brace and so on; (Our quality inspector will check the steel pieces after finish welding,this is the first quality check)

3. Sand blast : After finish welding and polishiing,our sand blast effect can reach internation 2.5 high grade,very good for resist rust;(Secondary quality check)

4.Paint : Within 2 hours after sand blast,all the steel members should be paint. Client can choose any color and any brand of paint.(The third quality check)

5. Inspect the goods by client : After we finish a part of fabrication work,we will invite clients to check the goods before we pack the steel frame.

6.Packing and loading : If clients require us to load the goods by close containers,we will pack the steel structure members one by one on the steel skid and tie the whole steel package well.(The fourth quality check )

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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:Why steel structure does not fire?
When the temperature is about 250 degrees Celsius, the tensile strength increases locally, the yield strength rises, the strength increases, and the plasticity decreases, and the material turns brittle.Creep is the phenomenon of steel deformation at a very slow speed in the range of 260 DEG C to 320 DEG C under the condition that the stress remains constant. With the performance of 200 DEG C has no change in the material properties, the surface structure of the radiation temperature should not exceed 200 degrees, the current steel structure industry regulation of the temperature to 150 degrees is appropriate, beyond which the temperature should adopt fire insulation protection.
Q:How is the steel structure foundation checked and accepted?
Before the steel structure is installed, the location axis, the basic axis and elevation, the bolt specifications and the location of the building shall be reviewed, and the basic inspection and handover acceptance shall be carried out. If the anchor bolt needs to check the axis and elevation of each bolt, the corresponding remedial measures must be taken when the specification is exceeded. Such as increasing the size of the column bottom, re drilling on the bottom of the column according to the actual location of the bolt.
Q:Large steel structure stress analysis, what software is good?
Landlord said SW, COSMOS, 3D3S, I have not used, do not comment. As for the PKPM software is the mainstream architectural design software, the rules of the structure is more applicable. The concept of a major feature of this software is "layer" is more obvious, is relatively rigid, through the "layer" bar calculation results often appear abnormal (such as crossing the floor column and brace etc.), so the industrial equipment no floor concept, to be especially careful when using. The panel you said could not be analyzed by finite element method.But PKPM also has the advantage, that is, get started quickly, for architectural design is relatively user-friendly, you just follow the prescribed steps step by step, you can basically complete modeling. In addition, he close to domestic norms, post-processing easier.Of course, some of the PKPM modules, I did not fully use, the evaluation of PKPM may not be accurate, comprehensive, please correct me downstairs.
Q:The steel structure and the concrete building which cost is high
A one-time base investment, steel structure slightly higher. But in the long run, steel is cheap
Q:In the steel structure, should be the first high-strength bolts after the end of the welding, or first screw, then welding after the end of the screw?
If it's a frame or a box type! Plug welding is a common practice! Most of the bolts are hinged, and the bolt and weld joint must be rigid!
Q:10 meters span, from 1 meters high slope, need to use the big beam? What size of steel is welded?
Ten meters span is single or double slope slope, single slope, the slope is 10%, double slope, the slope is 20%, but such small span steel, direct line, speed, although the steel key, but processing simple labor costs.
Q:The position of the steel structure requires a spring cushion for mounting the bolt
Steel structure is mainly made of steel material, and it is one of the main types of building structure. The structure is mainly composed of steel beams and steel plates, such as steel beams, steel columns, steel trusses and so on. Each component or component is usually connected with welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, stadiums, super high-rise and other fields. 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.
Q:In the installation of steel structure, insulation foil should be placed in the side wall or side wall? Why?
The reasons are as follows: first, the sound insulation property is good.Two, fire performance is stronger.Three, in order to facilitate installation.
Q:What is the main component in the steel structure and what is the secondary component?
The main components mainly include steel beam, steel column, column support and roof horizontal support

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