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Characteristic analysis of steel structure

Apr 07, 2017

floor deck

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Also called steel bearing plate, building steel plate, galvanized steel sheet roll forming, the cross section of V type, U type, trapezoid or similar shape of these kinds of waveforms, mainly used as permanent formwork, also can be selected for other purposes.

In the application stage, the bearing plate is used as the tensile reinforcement of the concrete floor, and the rigidity of the floor slab is increased, and the amount of the steel bar and the concrete is saved.

The surface pressure of the pressure plate makes the maximum bonding force between the bearing plate and the concrete, which makes the two parts form a whole, and the stiffening rib is combined, so that the bearing plate system has high bearing capacity.

Composite slabs (floor plate, steel plate) is a very reasonable structure, it can according to the position and characteristics of the components of the full steel tensile and compressive property of concrete and has the advantages of good seismic performance, good construction performance. This kind of structure is widely used in many high rise buildings at home and abroad.

Comparison of floor slab and ordinary reinforced concrete slab

The 1 floor bearing plate can be used as the permanent formwork of cast in site concrete, which eliminates the process of installing and removing the formwork in construction;

The 2 floor after the installation of the board can be used as a construction platform, but also do not need to use temporary support, does not affect the next layer of construction work;

The 3 floor bearing plate can be used as the bottom reinforcement of the floor slab, which reduces the workload of the mounting plate;

4 according to the pressure plate have different interface shape, can reduce the amount of concrete floor 30%, reduce floor weight and can reduce the beam column and foundation size accordingly, improve the performance of the whole structure;

Engineering steel

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A steel beam is a long strip of steel with a cross section. Its specifications to waist height (H) * leg width (b) * waist thickness (d) of the MM number, such as "160*88*6", which means 160 mm high waist, leg width of 88 mm, waist thickness of 6 mm steel. The I-beam is divided into three types: ordinary I-beam, light I-beam and H steel.

The wing of the common section steel and the light type steel is gradually thinned from the root to the edge, with a certain angle. Because of their relatively high cross section size, the difference of the moment of inertia of the two main sleeves of the cross section is relatively large, so it is usually used only for the bending members in the plane of the web or for the construction of the stressed members. There are many limitations on the scope of application of the axial compression member or the bending component which is perpendicular to the web plane.

Steel is widely used in a variety of building structures, bridges, vehicles, stents, machinery, etc..

C section steel

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It is made of hot rolled steel plate, which is made of C steel forming machine.

Light weight, good performance, high strength, compared with the traditional channel, the same strength can save material 30%.

C type steel purlin according to different height is divided into 80, 100, 120, 140, 160, five kinds of specifications, the length can be determined according to the engineering design, but considering the transportation and installation conditions, is generally not more than 12 meters.

C type steel purlin, widely used in steel structure building wall beam, it can be combined into a lightweight frame, bracket and other building components. In addition, can also be used in the manufacture of machinery and light column, Liang Hebi, etc..

H- section steel

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It is a kind of section steel with better mechanical properties, which is formed by the optimization of the section steel, especially the cross section with the English letter "H". H type steel is divided into wide flange steel (HW), H HU (HM), narrow flange H steel (HN), thin-walled H steel (HT), H steel (steel).

H steel is a new type of economic construction steel. H type steel cross section shape is reasonable in economy, good mechanical properties, rolling each point on the extended section is uniform, small internal stress, compared with the ordinary beam, a section modulus, light weight, saving advantages of metal, can make the building structure to reduce 30-40%; and because of its inner and outer legs parallel leg end is right, assembled into components, welding, riveting work can save up to 25%. Commonly used in large capacity, good stability of the cross-section of large buildings, such as the support of the foundation pile.