A high-performance structural composite floor

Abstract

The invention discloses a high-performance structural combined floor slab which is good in corrosion resistance, good in weather resistance, long in service life and superior in fire resistance and weather resistance. The high-performance structural combined floor slab comprises a base plate (1), a first buckling portion (2), a second buckling portion (3) and a plurality of sectional ribs (4), wherein the first buckling portion (2) is located at the left end of the base plate (1), the second buckling portion (3) is located at the right end of the base plate (1) and the sectional ribs (4) are arranged in the middle of the base plate (1) at intervals. The first bucking portions (2) of adjacent high-performance structural combined floor slabs and the second buckling portions (3) of the adjacent high-performance structural combined floor slabs are connected in a matched and buckled mode, the base plate (1), the first buckling portion (2), the second buckling portion (3) and the sectional ribs (4) are integrally formed in a rolled mode and the high-performance structural combined floor slab is made of fire-resistant and weather-resistance steel. The high-performance structural combined floor slab can be widely applied to the field of building structures.

Description

technical field [0001] The invention relates to a high-performance structural composite floor for building. Background technique [0002] In recent years, with the development of high-rise buildings, steel-concrete composite floors have been increasingly popularized and applied. The so-called composite floor is a structural form that makes full use of the materials and structural characteristics of steel and concrete to form a whole and work together. At present, the composite floor of profiled steel is more commonly used. The profiled steel plate composite floor is a very reasonable structural form. It can give full play to the advantages of steel tensile strength and concrete compression resistance according to the location and characteristics of its components, and has good seismic performance and construction. Performance, this structure is currently widely used in domestic and foreign buildings. Compared with ordinary reinforced concrete slabs, profiled steel plate co...

AI Technical Summary

Problems solved by technology

The existing ribs are divided into closed ribs and open ribs. The bottom of the open ribs has a large opening, and the openings cause the interior of the ribs to directly contact with the ambient air; even the closed rib floor deck, although its designed shape The ribs are often connected together by the vertical ribs, but due to the gravity of the concrete on the floor deck, it is easy to cause elastic deformation of the steel, and it is easy to cause the vertical ribs to be unable to be tightly connected together, resulting in openings, and the openings lead to the internal deformation of the ribs. Direct contact with ambient air; therefore, both closed ribs and open ribs will be in direct contact with ambient air. In the long run, chlorine ions, oxygen and moisture in the atmosphere will corrode the floor deck It may even cause the floor deck to rust, which will affect the effect of the floor deck as the bottom reinforcement, shorten its life, and ultimately affect the structural stability of the building, making it unable to reach the designed service life, especially in coastal areas and other humidity This situation is more serious in large areas with high acidity and alkalinity, which seriously affects the safety and service life of buildings.

In addition, no matter the floor deck with closed ribs or open ribs will be in direct contact with the ambient air. Once a fire occurs, the lower part of the floor deck will be in contact with open flames and high-temperature air to conduct heat, and the steel structure will be damaged as the temperature rises. High but the strength drops sharply, the yield strength decreases, and the elastic modulus decreases significantly, which will affect the subsequent temperature deformation and stress distribution. The temperature of the lower surface of the floor deck can reach 1200 °C in a short time. The ribs on the top of the vertical ribs Reaching 400°C will eventually affect the structural stability of the building, making it unable to reach the design service life, seriously affecting the safety and service life of the building

In order to prevent fire damage to the steel structure, fire-resistant coatings and fire-proof shielding are generally used to treat the steel structure, but the above-mentioned treatment is not only labor-intensive but also pollutes the environment. Fire prevention treatment, so there is a safety hazard

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