CN-122014016-A - Building reinforcing structure and method

CN122014016ACN 122014016 ACN122014016 ACN 122014016ACN-122014016-A

Abstract

The application relates to a building reinforcing structure and a method, and relates to the field of building structure reinforcement, wherein the building reinforcing structure comprises a reinforcing component and a bearing structure, the reinforcing component comprises a beam body surrounding reinforcing member for surrounding a building beam body and a top connecting piece, the beam body surrounding reinforcing member is connected with the top connecting piece through a fastener and is applied with pretightening force, the upper part of the bearing structure is fixed on a floor slab of a building, the end part of the bearing structure is rigidly connected with the reinforcing component, and the bearing structure is used for rigidly connecting overhanging steel beams. In the technical scheme of the application, through the reinforcing component and the bearing structure, the surrounding building Liang Tishi is adopted to add pretightening force and avoid excavation, so that the damage to the original structure and the construction vibration risk are effectively reduced, and the method has the advantages of reducing the damage to the original building structure, reducing the construction risk and improving the structure reliability.

Inventors

YU XUAN
HU YANLEI
SONG XIAOQIANG
WANG XU
JIANG PEI

Assignees

东风鸿远工程咨询有限公司

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (10)

1.A building reinforcing structure, comprising: a reinforcement assembly comprising a beam surrounding reinforcement and a top connector for surrounding a building beam, the beam surrounding reinforcement and the top connector being connected by fasteners and being preloaded, and And the upper part of the bearing structure is fixed on a floor slab of a building, the end part of the bearing structure is rigidly connected with the reinforcing component, and the bearing structure is used for rigidly connecting overhanging steel beams.
2. The building reinforcing structure of claim 1, wherein the beam body encircling reinforcement comprises a U-shaped hoop plate and the top connector comprises a beam top flat.
3. The building reinforcing structure of claim 2, wherein one side end of the U-shaped collar plate is adapted to extend above the building beam body to connect with an end of the roof rail.
4. The building reinforcing structure according to claim 2, wherein the fastener comprises: A first opposite-pulling screw rod vertically penetrating through the building beam body and the U-shaped hoop plate, two ends of the first opposite-pulling screw rod are fixed with the U-shaped hoop plate through nuts, and And the second opposite-pulling screw rod vertically penetrates through the floor slab of the building, and two ends of the second opposite-pulling screw rod are respectively fixed with the bearing structure and the beam top flat steel through nuts.
5. The building reinforcing structure of claim 4, further comprising a reinforcing plate for cushioning between the bottom plate of the U-shaped hoop plate and the bottom of the building beam.
6. The building reinforcing structure according to claim 3, wherein the U-shaped hoop plate and the beam top flat steel are provided with perforations at positions corresponding to the counter-pulling screws.
7. The building reinforcing structure of claim 2, wherein the load bearing structure comprises a secondary beam of added steel having ends rigidly connected to the side panels of the U-shaped hoop panel.
8. The building reinforcing structure according to claim 7, wherein the upper portion of the newly-added steel secondary beam is anchored to the building floor by an anchor bolt, and/or, The end part of the newly-added steel secondary beam is fixedly connected with the side plate of the U-shaped hoop plate in a welding mode.
9. A building reinforcement method applied to the building reinforcement structure according to any one of claims 1 to 8, characterized by comprising the steps of: The beam body surrounds the reinforcement and the top connecting piece to be installed on the building beam body through the fastener and apply pretightening force; Fixing the upper part of the bearing structure to the floor slab and rigidly connecting the end part of the bearing structure with the reinforcing component; And rigidly connecting the cantilever steel beam with the bearing structure.
10. The method of building reinforcement according to claim 9, wherein the step of installing the beam body around the reinforcement and the top connector on the building beam body by means of fasteners and applying the pre-tightening force comprises: Stripping the protective layer at the bottom of the building beam body and performing roughening treatment; and a reinforcing plate is arranged between the bottom of the building beam body and the surrounding reinforcing member of the beam body in a cushioning manner.

Description

Building reinforcing structure and method Technical Field The invention relates to the field of building structure reinforcement, in particular to a building reinforcing structure and a method. Background The existing large number of residential buildings and office buildings in China are mainly built in the 80 to 90 th century, and along with the development of economy and society and the change of functional requirements, a plurality of buildings are additionally provided with overhanging balconies or overhanging platforms so as to adapt to the modern use requirements. Such overhanging structures typically span large spans, presenting a significant challenge to the load carrying capacity of the original building beams and overall frames. In the related art, the construction mode of large-area excavation and bar planting of bearing members such as original walls, beams and columns of a building and connection with a new structure through concrete wet operation is generally adopted for realizing the transformation. The process not only can seriously damage the integral rigidity and continuity of the original structure, resulting in local weakening of the structural strength, but also can cause micro-crack expansion, concrete stripping and reinforcing steel bar stress concentration of the existing components very easily due to high-frequency vibration generated in the cutting process, thereby forming a remarkable threat to the safety and long-term stability of the old building. Disclosure of Invention The application provides a building reinforcing structure and a method, which can reduce damage to the original building structure, reduce construction risk and improve structure reliability. In a first aspect, an embodiment of the present application provides a building reinforcing structure, including: a reinforcement assembly comprising a beam surrounding reinforcement and a top connector for surrounding a building beam, the beam surrounding reinforcement and the top connector being connected by fasteners and being preloaded, and And the upper part of the bearing structure is fixed on a floor slab of a building, the end part of the bearing structure is rigidly connected with the reinforcing component, and the bearing structure is used for rigidly connecting overhanging steel beams. With reference to the first aspect, in one embodiment, the beam body encircling reinforcement comprises a U-shaped hoop plate and the top connector comprises a beam top flat. With reference to the first aspect, in one embodiment, a side end of the U-shaped hoop plate is configured to extend above the building beam body to connect with an end of the roof rail. With reference to the first aspect, in one embodiment, the fastener includes: A first opposite-pulling screw rod vertically penetrating through the building beam body and the U-shaped hoop plate, two ends of the first opposite-pulling screw rod are fixed with the U-shaped hoop plate through nuts, and And the second opposite-pulling screw rod vertically penetrates through the floor slab of the building, and two ends of the second opposite-pulling screw rod are respectively fixed with the bearing structure and the beam top flat steel through nuts. With reference to the first aspect, in one embodiment, the building reinforcing structure further includes a reinforcing plate for being interposed between the bottom plate of the U-shaped hoop plate and the bottom of the building beam. With reference to the first aspect, in one implementation manner, the U-shaped hoop plate and the beam top flat steel are provided with perforations at positions corresponding to the opposite-pulling screw. With reference to the first aspect, in one embodiment, the load-bearing structure is a secondary beam of added steel, and ends of the secondary beam are rigidly connected with side plates of the U-shaped hoop plate. In combination with the first aspect, in one embodiment, the upper portion of the newly added steel secondary beam is anchored to the building floor by an anchor bolt, and/or, The end part of the newly-added steel secondary beam is fixedly connected with the side plate of the U-shaped hoop plate in a welding mode. In a second aspect, an embodiment of the present application provides a building reinforcement method, which is applied to the above building reinforcement structure, and the building reinforcement method includes the following steps: The beam body surrounds the reinforcement and the top connecting piece to be installed on the building beam body through the fastener and apply pretightening force; Fixing the upper part of the bearing structure to the floor slab and rigidly connecting the end part of the bearing structure with the reinforcing component; And rigidly connecting the cantilever steel beam with the bearing structure. With reference to the second aspect, in one embodiment, the step of installing the beam body around the reinforcement and the top connector on the buildi