Reinforcing method and reinforcing structure of frame structure building surface large amplitude lifting

Abstract

The invention discloses a reinforcing method and reinforcing structure of frame structure building surface large amplitude lifting. Profile steel beams parallel to secondary beams are arranged between adjacent secondary beams of a floor plate, the two ends of each profile steel beam are fixed to a main beam through a bolt, and the lower end faces of each profile steel beam are flush with the high lower end face of all the secondary beams; then laminated profile steel is arranged at the bottom of the main beam, and is constituted by a baseboard, two side plates fixedly connected the baseboard, a left flange and a right flange, the left flange and the right flange are fixedly connected to the tops of the two side plates, so that the two side plates cover the portion below the main beam, and are fixed through an opposite pulling bolt, the part between the bottom face of the main beam and the baseboard is filled with concrete, and the left flange and the right flange support all the secondary beams and the profile steel beams; when the laminated profile steel passes through the secondary beam of which the lower end face is lower than that of the profile steel beam, continuous transition structures are arranged on the laminated profile steel, so that the continuous transition structures are matched with the lower end faces of the secondary beams; steel structure brackets are arranged at the nodes of a beam column. According to the reinforcing method and reinforcing structure of frame structure building surface large amplitude lifting, the bearing force of the floor plate can be multiplied, and therefore the requirement for improving the floor plate loading capability when the function of a house is changed is met.

Description

technical field [0001] The invention relates to a method for renovating a multi-storey frame structure building, in particular to a method for reinforcing the floor of a multi-storey frame structure building and a reinforcing structure. Background technique [0002] The large-area frame structure floor usually transmits the force through the combination of the main beam and the secondary beam to ensure the load capacity of the floor. When the purpose of the building needs to be changed, the floor load requirements may increase, making the original design requirements unable to meet the use requirements. At this time, the floor needs to be reinforced. [0003] In the prior art, a commonly used floor reinforcement method is a paste reinforcement method, that is, the integrity and load capacity of the floor are enhanced by pasting steel plates or fiberboards. For example, Chinese invention patent application CN102422683A discloses a method for reinforcing reinforced concrete s...

AI Technical Summary

Problems solved by technology

This method has an impact on the stability of the original structure. At the same time, the load transfer relationship between the transversely reinforced beam and the longitudinally reinforced beam is not clear, and there are problems with the force distribution between the original load structure. little improvement

In addition, in long-span buildings, the height of the bottom of the secondary beams is different, so when setting the reinforcement beams perpendicular to the secondary beams, there is a problem of crossing part of the secondary beams, which also leads to difficulties in setting the reinforcement beams

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