Prefabricated base plate with cold-formed thin-walled steel ribs, laminated plate and manufacturing method thereof

Abstract

The invention discloses a prefabricated bottom plate with cold-formed thin-walled steel ribs, a laminated plate and a manufacturing method of the prefabricated bottom plate. The prefabricated bottom plate with the cold-formed thin-walled steel ribs comprises the longitudinal cold-formed thin-walled steel ribs, prefabricated bottom plate prestressed steel bars, prefabricated bottom plate structural steel bars and cold-formed thin-walled steel rib structural steel bars. The two longitudinal cold-formed thin-walled steel ribs with the same shape penetrate through holes reserved in the lower parts of the ribs through the prefabricated bottom plate structural steel bars and are connected with the upper parts of the two ribs through the cold-formed thin-walled steel rib structural steel bars, and a steel bar-cold-formed thin-walled steel framework is prefabricated. The prefabricated bottom plate prestressed steel bars and the prefabricated bottom plate structural steel bars are pre-buried in concrete to form the prefabricated bottom plate. The prefabricated bottom plate with the cold-formed thin-walled steel ribs is good in integrality and anti-seismic property, good in fire resistance and durability and simple and convenient to construct, on-site supporting is not needed, the construction period is short, the difficulty is low, the manufacturing cost is low, hoisting and transporting are easy, and the prefabricated bottom plate is suitable for multistory and high-rise buildings and large-span floor structures.

Description

technical field [0001] The invention relates to a prefabricated base plate with cold-bent thin-walled steel ribs, a laminated plate and a manufacturing method thereof, belonging to the field of building construction. Background technique [0002] At present, most of the prefabricated floor slabs used in domestic laminated floors are prefabricated prestressed concrete ribbed floors. It cannot meet the development requirements of high-rise buildings and long-span structures. The patent with the publication number CN2719968 Y discloses a ribbed prestressed concrete prefabricated member panel, which includes a reinforced concrete floor, reinforced concrete longitudinal ribs and floor prestressed tendons. After the laminated layer concrete is easy to form a two-way stressed floor. However, the prefabricated components are easily broken during transportation and hoisting, and the anti-arch value of the prefabricated component slab is relatively large. At the same time, a large f...

AI Technical Summary

Problems solved by technology

However, the profiled steel plate must be placed on the upper flange of the profiled steel beam. The contact surface between the cast-in-place reinforced concrete and the profiled steel is small. To prevent slippage, it is necessary to weld the round beam bolts for positioning. The construction process is cumbersome, especially for the profiled steel web and the upper flange. The exposed places need to be protected by fire-resistant coatings, and the construction cost is high

The patent with the publication number CN101769030 A discloses a prefabricated concrete floor with steel ribs, including a prefabricated concrete floor, longitudinal steel ribs, prefabricated floor structural reinforcement, and holes reserved on the steel ribs. The floor is embedded in the precast concrete floor. Shaped steel ribs have high initial rigidity, and the webs of shaped steel ribs have holes, which are convenient for passing through steel bars. Excessively large, increasing construction costs

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