Pier column reinforcing device and pier column reinforcing method

Abstract

The invention discloses a pier column reinforcing device and a pier column reinforcing method.The pier column reinforcing device comprises a hoop assembly, the hoop assembly comprises at least two hoop pieces used for being matched with each other to define an annular structure, and the hoop pieces are used for being arranged on the periphery of a target pier column in the circumferential direction of the target pier column in a surrounding mode; the to-be-reinforced area of the target pier column is covered; the connecting structures are arranged between the two adjacent hoop pieces, and the connecting structures are used for connecting the two adjacent hoop pieces; the inner side of the hoop piece is provided with embedded steel bars used for being embedded into a target pier column. According to the pier column reinforcing device, the embedded steel bars used for being embedded into the target pier column are arranged on the inner sides of the hoop pieces so that the hoop assembly can participate in stress to play a bearing role, and therefore the bearing capacity of the target pier column can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a pier column reinforcement device and a pier column reinforcement method. Background Art

[0002] The pier is a building that supports the upper structure of two adjacent spans. Its function is to reliably and effectively transfer the load of the upper structure to the foundation. As the service time of the pier increases, due to previous defects or the continuous changes in load and environment, the pier is prone to concrete structure layer peeling, steel bar exposure, rust and other diseases, and even structural surface defects, which will affect the durability and bearing capacity of the pier.

[0003] In view of the above problems, it is usually necessary to reinforce the piers. Common reinforcement methods include reinforcement by increasing the cross-sectional size and jacket method. The reinforcement method by increasing the cross-sectional size is achieved by increasing the cross-sectional area of ​​the pier. However, the traditional reinforcement method by increasing the cross-sectional size requires formwork and demoulding, and the position of the outer mold must be limited during construction so that the pier is located in the center of the mold to ensure the uniform thickness of the reinforcement layer. The construction is cumbersome and the construction period is long, which brings many inconveniences to the construction workers. The jacket method is achieved by coating the outer surface of the pier with a new layer of reinforcement material to form a larger and stronger "jacket". However, the above-mentioned "jacket" can only serve as a template under normal circumstances, and cannot play a load-bearing role. It only participates in the force when the pier undergoes a large structural deformation. In addition, the above two reinforcement methods are both passive reinforcement, which is implemented without applying external loads to the piers or changing their internal force distribution. It is impossible to unload the piers, nor can it change the constant load internal force of the piers. Therefore, the reinforced part only bears the internal force generated by live loads, not the internal force generated by constant loads, and has limitations in dealing with the internal force caused by constant loads. Specifically, the constant load is a long-term load that continuously acts on the structure, and passive reinforcement cannot effectively reduce or redistribute the internal force caused by the constant load, and thus cannot effectively solve the potential risks of the piers under the action of long-term constant loads. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a pier column reinforcement device that can participate in the force to play a bearing role, thereby facilitating the improvement of the bearing capacity of the target pier column.

[0005] The present application also proposes a pier reinforcement method applied to the above-mentioned pier reinforcement device.

[0006] According to the first aspect of the present application, a pier reinforcement device includes:

[0007] A hoop assembly, the hoop assembly comprising at least two hoop pieces for cooperating with each other to enclose and form an annular structure, the hoop pieces being arranged around the outer periphery of the target pier column along the circumference of the target pier column to cover the area to be reinforced of the target pier column;

[0008] A connecting structure, the connecting structure is arranged between two adjacent hoop pieces, and the connecting structure is used to connect the two adjacent hoop pieces;

[0009] Wherein, the inner side of the hoop piece is provided with embedded reinforcement bars for being implanted into the interior of the target pier column.

[0010] The pier column reinforcement device according to the embodiment of the present application has at least the following beneficial effects: when in use, according to the size and position of the embedded steel bar arranged on the inner side of the hoop piece of the sleeve assembly, holes are drilled in the area to be reinforced of the target pier column, and then each hoop piece is arranged around the outer periphery of the target pier column along the circumference of the target pier column, and each embedded steel bar is embedded in each drilled hole one by one, and then two adjacent hoop pieces are connected by a connecting structure to fix the sleeve hoop assembly to the area to be reinforced of the target pier column, and finally grouting material is poured into the damaged area of ​​the target pier column to repair the damaged area of ​​the target pier column. Among them, by arranging embedded steel bars for implantation into the inside of the target pier column on the inner side of the hoop piece, the sleeve hoop assembly can participate in the force to play a bearing role, which is conducive to improving the bearing capacity of the target pier column.

[0011] According to some embodiments of the present application, the embedded reinforcement disposed on the inner side of at least one of the hoop pieces is T-shaped or L-shaped.

[0012] According to some embodiments of the present application, the embedded reinforcement disposed on the inner side of at least one of the hoop pieces is in the shape of a straight rod.

[0013] According to some embodiments of the present application, a grouting port is provided on the hoop plate.

[0014] According to some embodiments of the present application, the hoop sheet and the connecting structure are both prefabricated components.

[0015] According to some embodiments of the present application, the ferrule assembly is composed of four ferrule pieces of the same size.

[0016] According to some embodiments of the present application, a connecting ear is provided at the edge of any of the hoop plates for cooperating with the adjacent hoop plates, the connecting structure includes a bolt and a nut, and the connecting ear is provided with a mounting through hole for passing the bolt.

[0017] According to some embodiments of the present application, a preset assembly gap is provided between two adjacent hoop pieces, and a preset assembly gap is provided between two adjacent connecting ears.

[0018] According to some embodiments of the present application, a plurality of the mounting through holes are vertically spaced apart on the connecting ear.

[0019] According to the pier reinforcement method of the second aspect of the present application, which is applied to the pier reinforcement device according to the first aspect of the present application, the method comprises the following steps:

[0020] Analyze the damage of the target pier column in the area to be reinforced and prepare the corresponding hoop assembly;

[0021] Drill holes in the area to be reinforced of the target pier column according to the size and position of the embedded reinforcement arranged on the inner side of the hoop piece of the hoop assembly;

[0022] The hoop pieces are arranged around the outer periphery of the target pier column along the circumference of the target pier column, and the embedded steel bars are embedded into the drilled holes one by one;

[0023] Connecting two adjacent hoop pieces through a connecting structure so that the hoop assembly is fixed to the area to be reinforced of the target pier;

[0024] pouring grouting material into the damaged part of the target pier column in the area to be reinforced;

[0025] After the poured grouting material reaches the age, prestress is applied to the area to be reinforced of the target pier column through the connecting structure, so that the area to be reinforced of the target pier column is in a three-dimensional stress state.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic structural diagram of a pier column reinforcement device according to an embodiment of the present application when in use;

[0029] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle;

[0030] Figure 3 It is a structural schematic diagram of a pier column reinforcement device according to an embodiment of the present application;

[0031] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0032] Figure 5 yes Figure 1 A schematic cross-sectional view of the structure shown;

[0033] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point C in the middle.

[0034] Reference numerals:

[0035] Target pier a, repair part b, hoop 100, embedded reinforcement 110, grouting port 120, connecting ear 130, bolt 200, nut 300. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0037] In the description of the present application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0038] In the description of this application, if the words "some", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "some" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number.

[0039] In the description of this application, if the words "first", "second", etc. appear, they are only used to distinguish technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0041] The pier is a building that supports the upper structure of two adjacent spans. Its function is to reliably and effectively transfer the load of the upper structure to the foundation. As the service time of the pier increases, due to previous defects or the continuous changes in load and environment, the pier is prone to concrete structure layer peeling, steel bar exposure, rust and other diseases, and even structural surface defects, which will affect the durability and bearing capacity of the pier.

[0042] In view of the above problems, it is usually necessary to reinforce the piers. Common reinforcement methods include reinforcement by increasing the cross-sectional size and jacket method. The reinforcement method by increasing the cross-sectional size is achieved by increasing the cross-sectional area of ​​the pier. However, the traditional reinforcement method by increasing the cross-sectional size requires formwork and demoulding, and the position of the outer mold must be limited during construction so that the pier is located in the center of the mold to ensure the uniform thickness of the reinforcement layer. The construction is cumbersome and the construction period is long, which brings many inconveniences to the construction workers. The jacket method is achieved by coating the outer surface of the pier with a new layer of reinforcement material to form a larger and stronger "jacket". However, the above-mentioned "jacket" can only serve as a template under normal circumstances, and cannot play a load-bearing role. It only participates in the force when the pier undergoes a large structural deformation. In addition, the above two reinforcement methods are both passive reinforcement, which is implemented without applying external loads to the piers or changing their internal force distribution. It is impossible to unload the piers, nor can it change the constant load internal force of the piers. Therefore, the reinforced part only bears the internal force generated by live loads, not the internal force generated by constant loads, and has limitations in dealing with the internal force caused by constant loads. Specifically, the constant load is a long-term load that continuously acts on the structure, and passive reinforcement cannot effectively reduce or redistribute the internal force caused by the constant load, and thus cannot effectively solve the potential risks of the piers under the action of long-term constant loads.

[0043] Reference Figures 1 to 6 , according to an embodiment of the present application, the pier reinforcement device includes a hoop assembly and a connecting structure.

[0044] Specifically, the hoop assembly includes at least two hoop pieces 100 for cooperating with each other to enclose and form an annular structure, the hoop pieces 100 are used to be arranged around the outer periphery of the target pier a along the circumference of the target pier a to cover the area to be reinforced of the target pier a, and a connecting structure is arranged between two adjacent hoop pieces 100, and the connecting structure is used to connect two adjacent hoop pieces 100, wherein the inner side of the hoop piece 100 is provided with an embedded rebar 110 for implanting into the interior of the target pier a.

[0045] When in use, according to the size and position of the embedded steel bar 110 arranged on the inner side of the hoop piece 100 of the sleeve hoop assembly, holes are drilled in the area to be reinforced of the target pier a, and then each hoop piece 100 is arranged around the outer periphery of the target pier a along the circumference of the target pier a, and each embedded steel bar 110 is embedded in each drilled hole one by one, and then two adjacent hoop pieces 100 are connected by a connecting structure to fix the sleeve hoop assembly to the area to be reinforced of the target pier a, and finally grouting material is poured into the damaged part of the area to be reinforced of the target pier a to repair the damaged part of the area to be reinforced of the target pier a. Among them, by arranging the embedded steel bar 110 for implanting into the inside of the target pier a on the inner side of the hoop piece 100, the sleeve hoop assembly can participate in the force to play a bearing role, which is conducive to improving the bearing capacity of the target pier a.

[0046] Reference Figures 3 to 6 In some embodiments, the anchor bar 110 disposed on the inner side of at least one hoop 100 is T-shaped, and this part of the anchor bar 110 is used to be buried in the repair part b formed by the poured grouting material. Among them, since this part of the anchor bar 110 is T-shaped, it is helpful to enhance the structural strength of the repair part b formed by the poured grouting material. In addition, since there is no need to pre-drill holes for this part of the anchor bar 110, it is helpful to reduce the difficulty of construction, thereby helping to improve construction efficiency.

[0047] It should be noted that, in some other embodiments, the T-shaped anchor bar 110 may also be replaced by an L-shaped anchor bar 110, which is not limited here.

[0048] Reference Figures 3 to 6 In some of the embodiments, the anchor bars 110 disposed on the inner side of at least one hoop 100 are in the shape of a straight rod, i.e., an I-shape. This portion of the anchor bars 110 is used to be embedded in the interior of the original portion of the target pier a, i.e., the area of ​​the target pier a where no grouting material is poured. Since it is necessary to drill holes on the surface of the target pier a for this portion of the anchor bars 110, the use of straight rod-shaped anchor bars 110 is beneficial to reducing the difficulty of drilling, thereby helping to improve construction efficiency.

[0049] Reference Figure 1 and Figure 3 In some embodiments, a grouting port 120 is provided on the hoop 100 to facilitate pouring grouting material into the damaged part of the to-be-reinforced area of ​​the target pier a. The size and position of the grouting port 120 can be adjusted according to actual conditions.

[0050] It should be noted that, in some of the embodiments, the hoop plate 100 and the connection structure are both prefabricated components, that is, the hoop plate 100 and the connection structure are both prefabricated in advance in a factory, which is beneficial to improving construction efficiency.

[0051] Reference Figure 3 and Figure 5 In some of the embodiments, the hoop assembly is composed of four hoop pieces 100 of the same size, which is beneficial to reducing the span of the same hoop piece 100, thereby reducing the difference in orientation between different embedded steel bars on the same hoop piece 100, and further facilitating the embedding of the embedded steel bars 110 into the drilled holes, which is beneficial to reducing the construction difficulty and improving the construction efficiency.

[0052] Reference Figures 1 to 6 In some of the embodiments, a connecting ear 130 is provided at the edge of any hoop plate 100 for cooperating with an adjacent hoop plate 100, and the connecting structure includes a bolt 200 and a nut 300. The connecting ear 130 is provided with a mounting through hole (not shown in the figure) for passing the bolt 200. The structure is simple and easy to implement.

[0053] It should be noted that, in some of the embodiments, there is a preset assembly gap between two adjacent hoops 100, and there is a preset assembly gap between two adjacent connecting ears 130, so that prestress can be applied to the area to be reinforced of the target pier a by tightening the nut 300 on the bolt 200, so that the area to be reinforced of the target pier a is in a three-dimensional stress state, so that the repair part b formed by the poured grouting material can not only withstand the internal force generated by the live load, but also withstand the internal force generated by part of the constant load, which is beneficial to reduce the potential risk of the target pier a under long-term constant load.

[0054] It should be noted that in some of the embodiments, a plurality of mounting through holes are vertically spaced apart on the connecting ears 130, so that a plurality of bolts 200 equipped with nuts 300 can be installed between two adjacent connecting ears 130. This not only improves the stability and reliability of the structure, but also facilitates better application of prestress to the area to be reinforced of the target pier a through the bolts 200 and nuts 300.

[0055] It should be noted that in some other embodiments, the connection structure may also be made of iron wire, which is not limited here. Specifically, the hoop pieces 100 are tied together by iron wire and fixed to the area to be reinforced of the target pier a, and prestress can be applied by increasing the tightness of the tied iron wire.

[0056] According to the pier reinforcement method of the embodiment of the present application, which is applied to the above-mentioned pier reinforcement device, the following steps are included:

[0057] Analyze the damage of the area to be reinforced of the target pier a and prepare the corresponding hoop assembly;

[0058] According to the size and position of the embedded reinforcement 110 provided on the inner side of the hoop piece 100 of the hoop assembly, a hole is drilled in the area to be reinforced of the target pier a;

[0059] Each hoop piece 100 is arranged around the outer periphery of the target pier a along the circumference of the target pier a, and each planting bar 110 is embedded in each drilled hole one by one;

[0060] Connect two adjacent hoop pieces 100 through a connecting structure so that the hoop assembly is fixed to the area to be reinforced of the target pier a;

[0061] pouring grouting material into the damaged part of the area to be reinforced of the target pier a;

[0062] After the poured grouting material reaches the age, prestress is applied to the area to be reinforced of the target pier a through the connection structure, so that the area to be reinforced of the target pier a is in a three-dimensional stress state.

[0063] Specifically, the prestress along the radial direction of the target pier a applied to the area to be reinforced of the target pier a by the connection structure is combined with the axial load and bending moment of the target pier a, so that the area to be reinforced of the target pier a can be placed in a three-dimensional stress state.

[0064] It should be noted that, in some of the embodiments, before pouring grouting material into the damaged part of the target pier a in the area to be reinforced, it is ensured that a gap for pouring grouting material is left between the inner wall of the hoop 100 and the surface of the target pier a, so that the poured grouting material can fill the damaged part of the target pier a in the area to be reinforced.

[0065] In the description of this specification, if the description involves reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" and "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A pier column reinforcement device, characterized in that: include: A hoop assembly, the hoop assembly comprising at least two hoop pieces for cooperating with each other to enclose and form an annular structure, the hoop pieces being arranged around the outer periphery of the target pier column along the circumference of the target pier column to cover the area to be reinforced of the target pier column; A connecting structure, the connecting structure is arranged between two adjacent hoop pieces, and the connecting structure is used to connect the two adjacent hoop pieces; Wherein, the inner side of the hoop piece is provided with embedded reinforcement bars for being implanted into the interior of the target pier column.

2. The pier reinforcement device according to claim 1, characterized in that: The embedded reinforcement arranged on the inner side of at least one of the hoop pieces is T-shaped or L-shaped.

3. The pier reinforcement device according to claim 2, characterized in that: The embedded reinforcement arranged on the inner side of at least one of the hoop pieces is in the shape of a straight rod.

4. The pier reinforcement device according to claim 1, characterized in that: The hoop piece is provided with a grouting port.

5. The pier reinforcement device according to claim 1, characterized in that: The hoop plate and the connecting structure are both prefabricated components.

6. The pier reinforcement device according to claim 1, characterized in that: The ferrule assembly is composed of four ferrule pieces of the same size.

7. The pier reinforcement device according to any one of claims 1 to 6, characterized in that: A connecting ear is arranged at the edge of any of the hoop pieces for cooperating with the adjacent hoop pieces, the connecting structure comprises a bolt and a nut, and the connecting ear is provided with a mounting through hole for penetrating the bolt.

8. The pier reinforcement device according to claim 7, characterized in that: There is a preset assembly gap between two adjacent hoop plates, and there is a preset assembly gap between two adjacent connecting ears.

9. The pier reinforcement device according to claim 8, characterized in that: A plurality of mounting through holes are vertically spaced apart on the connecting ear.

10. A pier column reinforcement method, characterized in that: The pier reinforcement device as claimed in claim 8 or 9 comprises the following steps: Analyze the damage of the target pier column in the area to be reinforced and prepare the corresponding hoop assembly; Drill holes in the area to be reinforced of the target pier column according to the size and position of the embedded reinforcement arranged on the inner side of the hoop piece of the hoop assembly; The hoop pieces are arranged around the outer periphery of the target pier column along the circumference of the target pier column, and the embedded steel bars are embedded into the drilled holes one by one; Connecting two adjacent hoop pieces through a connecting structure so that the hoop assembly is fixed to the area to be reinforced of the target pier; pouring grouting material into the damaged part of the target pier column in the area to be reinforced; After the poured grouting material reaches the age, prestress is applied to the area to be reinforced of the target pier column through the connecting structure, so that the area to be reinforced of the target pier column is in a three-dimensional stress state.

Images