Fabricated external profile steel reinforcing structure for concrete square column and reinforcing method of fabricated external profile steel reinforcing structure
By wrapping angle steel outside the concrete square column to form a composite cross-section, the problems of insufficient seismic performance and insufficient structural stiffness of old building concrete columns are solved, the bearing capacity is improved and the seismic performance is enhanced, and the installation process is simplified, reducing costs and pollutant generation.
Patent Information
- Application Number
- CN202510655044.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-07-11
AI Technical Summary
The concrete columns of old buildings have problems of insufficient seismic performance and insufficient structural stiffness, and the early design seismic resistance standards are relatively low, making it difficult to meet the current specifications.
The prefabricated outsourcing steel reinforced structure is adopted to form a composite cross-section by wrapping angle steel outside the concrete square column, and the steel and concrete work together to increase the bearing capacity and seismic resistance, and achieve rapid installation through connectors and threaded sleeves.
The axial compression, bending and shear bearing capacity of concrete columns is improved, the cracks are expanded, the lateral stiffness is enhanced, brittle damage is avoided, the service life is extended, and the production costs and pollutant generation is reduced.
Smart Images
Figure CN120291733A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of building construction, and particularly relates to an assembled external steel reinforcement structure for a concrete square column and a reinforcement method thereof. Background Art
[0002] With the acceleration of the urbanization process, a large number of old buildings are facing problems such as functional aging and structural performance degradation. Concrete columns are the main load-bearing components of old buildings. Over time, the concrete columns will show varying degrees of aging and damage, and long-term load effects will cause cracks in the concrete columns, seriously threatening the safety of the structures of old buildings. At the same time, during the early design and construction of old buildings, the seismic fortification standards were relatively low, and the seismic performance of the columns was difficult to meet the requirements of current seismic codes. Summary of the Invention
[0003] In order to overcome the defects of the prior art, the present invention provides an assembled external steel reinforcement structure for a concrete square column and a reinforcement method thereof to solve the problem of insufficient seismic performance of the concrete columns in old buildings.
[0004] To achieve the above object, the present invention provides an assembled external steel reinforcement structure for a concrete square column, including:
[0005] Two half steel reinforcements arranged oppositely, each half steel reinforcement including two angle steel reinforcements arranged oppositely and a connecting plate. The angle steel reinforcements are arranged vertically, and each angle steel reinforcement includes two flange plates arranged at an angle. One side of the two flange plates is connected together. The angle steel reinforcements are attached to the corners of the concrete square column. The connecting plate is connected to the other side of one flange plate of the two angle steel reinforcements, and a bracket plate is formed on the other side of the other flange plate of the two angle steel reinforcements.
[0006] A connector, including two adapter plates. One end of the adapter plate is connected to the bracket plate, and the other end of the adapter plate is connected with a screw rod. The screw rods corresponding to each other in position on the two half steel reinforcements are screwed with a threaded sleeve.
[0007] Further, the number of the connecting plates is multiple, and the multiple connecting plates are arranged at intervals along the length direction of the angle steel reinforcement.
[0008] Further, the multiple connecting plates are arranged at equal intervals.
[0009] Further, the number of the bracket plates is multiple, and the positions of the bracket plates correspond to the positions of the connecting plates.
[0010] Further, the corbel has opposite first and second ends. The first end of the corbel is connected to one end of the adapter plate. The thickness of the first end of the corbel is greater than the thickness of the second end of the corbel, and the thickness of the first end of the corbel is adapted to the thickness of the adapter plate.
[0011] Further, the width of the adapter plate gradually decreases in the direction from one end of the adapter plate to the other end of the adapter plate.
[0012] Further, the spiral directions of the internal threads at both ends of the threaded sleeve are opposite.
[0013] The present invention provides a reinforcement method for an assembled external steel reinforcement structure for a concrete square column, including the following steps:
[0014] Respectively arrange the two half steel reinforcements on the opposite sides of the concrete square column to be reinforced, so that the corner steel of the half steel reinforcement fits against the corner of the concrete square column;
[0015] Install the adapter plate of the connector on the corbel on the other side of the other flange of the corner steel of the half steel reinforcement;
[0016] Screw the threaded sleeve of the connector onto the screw rods corresponding to the positions of the two half steel reinforcements, so that the two half steel reinforcements press against the side surface of the concrete square column.
[0017] The beneficial effects of the present invention are as follows. The assembled external steel reinforcement structure for a concrete square column of the present invention forms a composite section (steel-concrete collaborative work) by wrapping angle steel outside the concrete square column, directly improving the axial compression, bending and shear bearing capacities of the column. The high ductility performance of the steel can better absorb seismic energy and avoid brittle failure of the column, solving problems such as insufficient bearing capacity and poor seismic performance of concrete columns in old buildings.
[0018] In addition, under the action of horizontal loads (such as wind loads, seismic loads, etc.), the assembled external steel reinforcement structure for a concrete square column of the present invention can increase the lateral stiffness of the concrete column, effectively limit the lateral displacement of the column, and the restraint effect of the external steel can also effectively limit the cracking and expansion of internal cracks in the concrete column, ensuring the integrity and mechanical properties of the concrete column. At the same time, the assembled external steel reinforcement structure for a concrete square column of the present invention is deeply processed in the factory, mass-produced prefabricated, and can be used by installing the threaded sleeve on-site. The installation process reduces welding operations, reduces pollutant generation, is simple and fast to operate, improves production efficiency, and saves production costs. Description of the Drawings
[0019] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present application will become more obvious:
[0020] Figure 1 This is a schematic structural view of the prefabricated outer steel profile reinforcement structure for a concrete square column according to an embodiment of the present invention.
[0021] Figure 2 This is a schematic top view structure of the prefabricated outer steel profile reinforcement structure for a concrete square column according to an embodiment of the present invention.
[0022] Figure 3 This is an exploded schematic structural view of the prefabricated outer steel profile reinforcement structure for a concrete square column according to an embodiment of the present invention. Detailed implementation manners
[0023] The following further elaborates on the present application in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention and are not intended to limit the invention. Additionally, it should be noted that for ease of description, only parts related to the invention are shown in the drawings.
[0024] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will detail the present application with reference to the accompanying drawings and embodiments.
[0025] Refer to Figures 1 to 3 As shown, the present invention provides a prefabricated outer steel profile reinforcement structure for a concrete square column, including: a semi-encased steel profile 1 and a connector 2.
[0026] The number of the semi-encased steel profiles 1 is two. The two semi-encased steel profiles 1 are arranged oppositely. Specifically, the semi-encased steel profile 1 includes an angle steel profile 11 and a connecting plate 12.
[0027] Each semi-encased steel profile is configured with two angle steel profiles 11 and a plurality of connecting plates 12.
[0028] Among them, each angle steel profile 11 is arranged vertically. The angle steel profile 11 includes two flange plates 111 arranged at an angle. One side of the two flange plates 111 is connected together. In this embodiment, the two flange plates of the arc-shaped steel profile are perpendicularly arranged. The angle steel profile 11 is attached to the corner of the concrete square column.
[0029] The connecting plate 12 is connected to the other side of one flange plate 111 of the two angle steel profiles 11. A corbel plate 112 is formed on the other side of the other flange plate 111 of the two angle steel profiles 11.
[0030] The connector 2 includes a transfer plate 21, a screw 22, and a threaded sleeve 23.
[0031] Wherein, one end of the adapter plate 21 is connected to the bracket plate 112. The other end of the adapter plate 21 is connected with a screw rod 22. The screw rods 22 corresponding to the positions on the two semi-encased steel sections 1 are screwed with threaded sleeves 23.
[0032] As a preferred embodiment, the spiral directions of the internal threads at both ends of the threaded sleeve 23 are opposite.
[0033] In this embodiment, the number of the connecting plates 12 is multiple. The multiple connecting plates 12 are arranged at intervals along the length direction of the corner guard steel section 11.
[0034] Preferably, the multiple connecting plates 12 are arranged at equal intervals.
[0035] As a preferred embodiment, the number of the bracket plates 112 is multiple. The positions of the bracket plates 112 correspond to the positions of the connecting plates 12.
[0036] Refer to Figure 3 As shown. The bracket plate 112 has an opposite first end and second end. The first end of the bracket plate 112 is connected to one end of the adapter plate 21. The thickness of the first end of the bracket plate 112 is greater than the thickness of the second end of the bracket plate 112. The thickness of the first end of the bracket plate 112 is adapted to the thickness of the adapter plate 21.
[0037] In this embodiment, the width of the adapter plate 21 gradually decreases from one end of the adapter plate 21 to the other end of the adapter plate 21.
[0038] The assembled encased steel reinforcement structure for concrete square columns of the present invention can be customized designed and constructed according to different concrete column sizes and reinforcement requirements on site.
[0039] The assembled encased steel reinforcement structure for concrete square columns of the present invention is prefabricated and produced in the factory, and can be used by transporting to the site and installing the threaded sleeves. The operation is simple and fast, which improves the production efficiency and saves the production cost.
[0040] The corner guard steel section of the assembled encased steel reinforcement structure for concrete square columns of the present invention forms a composite section with the concrete square column. On the one hand, it can directly improve the bearing capacity of the concrete column. On the other hand, it is beneficial to limit the expansion of internal cracks in the concrete column, ensuring the integrity and mechanical properties of the concrete column. The connecting plates of the assembled encased steel reinforcement structure for concrete square columns of the present invention can limit the lateral displacement of the column and increase the lateral stiffness of the column, solving the problem of insufficient structural stiffness in old buildings. In addition, the assembled encased steel reinforcement structure for concrete square columns of the present invention adopts assembled finished products for installation and can be deepened according to the size requirements of different concrete columns, which is applicable to the structural reinforcement of concrete columns in old buildings and has strong popularization.
[0041] The present invention provides a reinforcement method for an assembled external steel - shaped reinforcement structure for concrete square columns, comprising the following steps:
[0042] S1. Respectively arrange two half - wrapped steel shapes 1 on the opposite sides of the concrete square column to be reinforced, such that the corner - protecting steel shapes 11 of the half - wrapped steel shapes 1 are attached to the corners of the concrete square column.
[0043] S1. Install the transfer plate 21 of the connector 2 on the bracket plate 112 on the other side of the other flange plate 111 of the corner - protecting steel shape 11 of the half - wrapped steel shape 1.
[0044] S1. Screw the threaded sleeve 23 of the connector 2 onto the screw rod 22 corresponding to the positions of the two half - wrapped steel shapes 1, such that the two half - wrapped steel shapes 1 press against the side surface of the concrete square column.
[0045] When using the assembled external steel - shaped reinforcement structure for concrete square columns of the present invention to reinforce a concrete square column, first conduct a comprehensive inspection on the concrete square column to be reinforced, including the column size, concrete strength, steel bar configuration, existing damage conditions, etc., evaluate the actual bearing capacity and performance of the concrete square column, and provide accurate data for the reinforcement design.
[0046] According to the inspection and evaluation results, combined with the size and structural performance requirements of the concrete square column, etc., determine the steel type, specification, and thickness of the assembled external steel - shaped column, draw detailed design drawings, and process and pre - fabricate them in the factory.
[0047] Remove impurities such as dust, oil stains, and loose layers on the surface of the on - site concrete square column, use a grinding machine to grind the column surface to make the surface flat and rough, and increase the adhesion between the angle steel, steel plate and concrete.
[0048] After the concrete square column is cleaned, closely attach one side of the corner - protecting steel shape to the four corners of the concrete column and make temporary fixation, then install the threaded sleeve from bottom to top. After the installation is completed, the installation of the assembled external steel - shaped column is completed.
[0049] The assembled external steel - shaped reinforcement structure for concrete square columns of the present invention forms a composite section (co - working of steel and concrete) by wrapping angle steel outside the concrete square column, directly improving the axial compression, flexural and shear bearing capacities of the column. The high ductility performance of the steel better absorbs seismic energy and avoids brittle failure of the column, solving problems such as insufficient bearing capacity and poor seismic performance of concrete columns in old buildings.
[0050] Secondly, the external steel provides an additional protective layer for the concrete and steel bars inside the concrete. In a harsh environment, it prevents moisture, oxygen, carbon dioxide, and corrosive media in the external environment from invading the inside of the concrete, slows down the carbonation of the concrete and the corrosion rate of the steel bars, thereby improving the durability of the concrete column and extending the service life of old buildings.
[0051] In addition, under the action of horizontal loads (such as wind loads, seismic loads, etc.), the prefabricated external steel-reinforced structure for concrete square columns of the present invention can increase the lateral stiffness of the concrete column, effectively limit the lateral displacement of the column, and the restraint effect of the external steel can also effectively limit the cracking and expansion of internal cracks in the concrete column, ensuring the integrity and mechanical properties of the concrete column. At the same time, the prefabricated external steel-reinforced structure for concrete square columns of the present invention is deeply processed and mass-produced in the factory, and can be used by installing threaded sleeves on site. The installation process reduces welding operations, reduces pollutant generation, is simple and fast to operate, improves production efficiency, and saves production costs.
[0052] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.
Claims
1. An assembled external steel reinforcement structure for a concrete square column, characterized in that, Comprising: Two semi - enclosed steel profiles arranged oppositely. The semi - enclosed steel profiles include two angle - protecting steel profiles arranged oppositely and a connecting plate. The angle - protecting steel profiles are arranged vertically. The angle - protecting steel profiles include two flange plates arranged at an angle. One side of the two flange plates is connected together. The angle - protecting steel profiles are attached to the corners of the concrete square column. The connecting plate is connected to the other side of one flange plate of the two angle - protecting steel profiles. A corbel plate is formed on the other side of the other flange plate of the two angle - protecting steel profiles. A connector, including two adapter plates. One end of the adapter plate is connected to the corbel plate. The other end of the adapter plate is connected with a screw rod. Threaded sleeves are screwed onto the screw rods corresponding in position on the two semi - enclosed steel profiles.
2. The prefabricated external steel reinforcement structure for a concrete square column according to claim 1, characterized in that, The number of the connecting plates is multiple, and the multiple connecting plates are arranged at intervals along the length direction of the angle - protecting steel profile.
3. The prefabricated external steel reinforced structure for concrete square columns according to claim 2, characterized in that, The multiple connecting plates are arranged at equal intervals.
4. The prefabricated external steel reinforcement structure for concrete square columns according to claim 2, wherein, The number of the corbel plates is multiple, and the positions of the corbel plates correspond to the positions of the connecting plates.
5. The prefabricated external steel reinforcement structure for concrete square columns according to claim 1, characterized in that, The corbel plate has an opposite first end and second end. The first end of the corbel plate is connected to one end of the adapter plate. The thickness of the first end of the corbel plate is greater than the thickness of the second end of the corbel plate. The thickness of the first end of the corbel plate is adapted to the thickness of the adapter plate.
6. The prefabricated outer steel reinforcement structure for concrete square columns according to claim 5, characterized in that, The width of the adapter plate gradually decreases from one end of the adapter plate to the other end of the adapter plate.
7. The prefabricated external steel reinforced structure for concrete square columns according to claim 1, characterized in that, The spiral directions of the internal threads at both ends of the threaded sleeve are opposite.
8. A strengthening method for an assembled external steel reinforcement structure for a concrete square column as described in any one of claims 1 to 7, characterized in that, Including the following steps: Respectively arrange the two semi - enclosed steel profiles on the opposite sides of the concrete square column to be reinforced, so that the angle - protecting steel profiles of the semi - enclosed steel profiles are attached to the corners of the concrete square column. Install the adapter plate of the connector on the corbel plate on the other side of the other flange plate of the angle - protecting steel profile of the semi - enclosed steel profile. Screw the threaded sleeve of the connector onto the screw rods corresponding in position on the two semi - enclosed steel profiles, so that the two semi - enclosed steel profiles press against the side surface of the concrete square column.