Renovation Structure and Construction Method of Old Factory Building by Adding Stories

Abstract

The invention relates to a floor-adding transformation structure inside an old factory building and a construction method of the floor-adding transformation structure inside the old factory building, and belongs to the field of aseismic reinforcement. The floor-adding transformation structure comprises an old factory building original structure and further comprises additional inner transverse steel girders, additional inner longitudinal steel girders, additional inner steel columns, additional outer steel columns, additional outer steel ring girders and newly added floor-adding concrete floor slabs. The additional inner longitudinal steel girders, the additional inner transverse steel girders and the additional inner steel columns are connected in a welded mode to be latticed steel frames, the ends of the additional inner transverse steel girders penetrate through the outer wall of the original structure, and the additional inner transverse steel girders, the additional outer steel columns and the additional outer steel ring girders are connected to be the whole closed steel frames through an anchoring measure. Overall loads of added floors inside the factory building are borne by the reinforced steel frames, the force transmitting mode of the original structure is changed, and through the tight anchoring measure between the girders and columns of the additional steel frames and columns of the original structure, the new structure and the old structure form a firm whole, so that a masonry structure poor in aseismic performance is transformed into the steel frame concrete composite structure which mainly depends on the additional steel frames for bearing strength.

Description

technical field [0001] The invention relates to an interlayer reconstruction technology, in particular to an internal layer reconstruction structure of an old factory building and a construction method thereof, and belongs to the technical field of seismic reinforcement. Background technique [0002] Adding floors does not occupy new land, saves investment, and can make full use of existing building structures, especially widely used in the renovation of old factory buildings. The steel frame concrete beam can give full play to the characteristics of the two building materials, and has higher strength and larger span. It is very suitable for application in the interior addition of large-space old factory buildings. At the same time, the use of steel frame concrete structure can reduce the thickness of the floor, reduce the self-weight of the structure, and can also reduce the cost and save investment, which has significant technical and economic benefits. Contents of the i...

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Problems solved by technology

[0003] In order to renovate and reuse urban abandoned industrial plants, on the basis of adding layers to the internal space of the original structure, continue its use function through integral reinforcement, and improve its ability to resist earthquakes, this invention proposes a structure for adding layers to the interior of old plants And its construction method, through the overall load of the added storey inside the factory building is borne by the reinforced steel frame, the force transmission mode of the original structure is changed, and the new and old structures form a solid whole through the tight anchorage measures of the steel frame beams and columns of the original structure, In this way, the masonry structure with poor seismic performance is transformed into a steel-frame concrete hybrid structure that mainly relies on the external steel frame to bear the load, which fundamentally solves the problem of poor seismic performance of original houses in the renovation of old factory buildings, and the serious loss of personnel and property caused by the earthquake

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