Expressway intercommunication reconstruction pillar reinforcing structure

Abstract

The utility model provides a supporting column reinforcing structure for highway intercommunication reconstruction, and belongs to the technical field of highway supporting column reinforcing. Comprising a plurality of first connecting ribs, the first connecting ribs are used for being connected to steel bar heads exposed out of the end faces of chiseled upper and lower sections of original pier columns, and the first connecting ribs are in concentric butt joint with the steel bar heads exposed out of the end faces of the upper and lower sections of original pier columns and are fixed through concentric lap welding; the steel formwork comprises two semicircular plates, the two semicircular plates are welded to form a circular ring shape, the steel formwork is fixed to the upper section and the lower section of the chiseled original pier column in a veneering mode at the same time, a pouring area is formed, a pouring hole is formed in the steel formwork, and a grout stopping plug is arranged on the pouring hole; and the concrete layer is poured in from the pouring hole, and is wrapped and poured in the pouring area to form a connecting section. The bearing capacity and durability of the bridge strut can be effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of highway pillar reinforcement, in particular to a highway interchange reconstruction pillar reinforcement structure. Background Art

[0002] In highway interchange reconstruction projects, reinforced concrete wrapping is a common method for strengthening bridge pillars, aiming to enhance the bearing capacity and durability of bridge pillars. However, this technology has several disadvantages. First, reinforced concrete wrapping increases the deadweight of the bridge pillars, which may affect the stability of the overall structure, especially under high load conditions; second, the construction process is relatively complicated. In addition, the bonding performance between the wrapping layer and the original bridge pillars may be affected, and peeling and cracks may occur after long-term use, reducing the reinforcement effect. Finally, reinforced concrete wrapping has limited effect in combating environmental factors (such as corrosion and freeze-thaw), which may lead to insufficient durability of bridge pillars. Therefore, there is an urgent need to find more effective and flexible reinforcement solutions to overcome the limitations of existing technologies. Utility Model Content

[0003] The purpose of the utility model is to provide a highway interchange reconstruction pillar reinforcement structure, which can effectively enhance the bearing capacity and durability of bridge pillars.

[0004] The embodiments of the present invention are achieved through the following technical solutions:

[0005] A highway interchange reconstruction pillar reinforcement structure includes a first connecting bar, wherein a plurality of the first connecting bars are provided and used to connect the exposed steel bar heads of the upper and lower sections of the original pier column. The first connecting bar is concentrically butted with the exposed steel bar heads of the upper and lower sections of the original pier column and fixed by concentric lap welding.

[0006] The steel formwork comprises two semicircular plates welded together to form a circular ring. The steel formwork is simultaneously fixed to the upper and lower sections of the original pier column that have been cut open to form a pouring area. The steel formwork is provided with pouring holes, each of which is provided with a grouting plug.

[0007] A concrete layer is poured into the pouring hole and wrapped in the pouring area to form a connecting section.

[0008] Furthermore, the concentrically butted portions of the adjacent first connecting bars and the steel bar heads of the original pier columns are staggered in an up-and-down manner.

[0009] Furthermore, a plurality of fixing holes are opened on the steel formwork, and a plurality of connecting columns are welded to the exposed steel bar heads on the end faces of the upper and lower sections of the original pier columns. The connecting columns are arranged to pass through the fixing holes, and one end of the connecting column corresponding to the fixing hole is welded to the steel formwork.

[0010] Furthermore, the thickness of the steel template is 6mm-10mm.

[0011] Furthermore, a portion of the inner walls of the upper and lower ends of the steel template are respectively embedded in the outer peripheral walls of the upper and lower sections of the original pier columns that have been chiseled out.

[0012] Furthermore, the contact surfaces of the upper and lower sections of the original pier columns are coated with a structural interface adhesive layer, and the contact surfaces are roughened.

[0013] Furthermore, annular ribs are welded to the inner side or the outer side of the annular wall formed by the plurality of the first connecting ribs. The annular ribs are arranged in a circular ring shape and a plurality of the annular ribs are arranged vertically.

[0014] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0015] 1. The utility model welds the first connecting reinforcement to the exposed steel bar heads of the end faces of the upper and lower sections of the original pier columns, fixes them with concentric lap welding, reinforces them with steel formwork, and pours them with concrete. After the concrete is poured, there is no need to disassemble the pier columns, which can effectively increase the shear resistance of the pier columns, improve the connectivity and structural strength of the upper and lower sections of the original pier columns, and significantly enhance the bearing capacity, durability and reliability of the bridge pillars.

[0016] 2. The utility model further ensures the stability and bearing capacity of the overall structure and improves the tensile strength and durability in concrete by coating the structural interface adhesive layer on the contact surfaces of the upper and lower sections of the original pier columns and welding annular reinforcements on the inner or outer side of the annular wall surrounded by multiple first connecting reinforcements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the highway interchange reconstruction pillar reinforcement structure provided by the utility model;

[0019] Figure 2 For this utility model Figure 1 Enlarged view of part A;

[0020] Figure 3 This utility model is intended to show the structural diagram after the concrete layer is poured;

[0021] Figure 4 This utility model is intended to show the front view of using construction columns and jacks for support when chiseling away the concrete of the broken section of the original pier column;

[0022] Figure 5 The utility model aims to show a side view of using construction columns and jacks for support when chiseling out the concrete of the broken section of the original pier column.

[0023] Icons: 1-first connecting reinforcement, 2-steel formwork, 21-casting area, 22-casting hole, 23-slurry stopper, 24-fixing hole, 25-connecting column, 3-original pier column in the upper section, 31-broken section, 4-original pier column in the lower section, 41-rebar head, 411-concentric overlap part, 5-concrete layer, 51-connecting section, 6-structural interface adhesive layer, 7-ring reinforcement, 8-beam body, 9-construction column, 91-jack, 911-construction ground. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0026] Example

[0027] The following is further described in conjunction with specific embodiments. Figure 1-Figure 5 As shown, the utility model is a highway interchange reconstruction pillar reinforcement structure, which aims to significantly improve the bearing capacity and durability of the bridge pillar through design and facilitate the reinforcement of the pillar, which is a bridge pier. It should be noted that before reinforcing the bridge pillar, the damaged position of the bridge pillar that needs to be reinforced needs to be chiseled out. The chiseled section is called the broken section 31. The broken section 31 requires the concrete to be chiseled out, specifically dividing the damaged position into the upper original pier 3 and the lower original pier 4, and retaining a part of the vertical steel bars on the upper original pier 3 and the lower original pier 4, leaving the steel bar head 41; and before construction, it is necessary to use construction columns 9 and jacks 91 on the construction ground 911 to support the bottom surface of the beam 8 to support and fix the entire bridge pillar to ensure the stability and safety of the pillar during construction.

[0028] The reinforcement structure is mainly achieved by welding a plurality of first connecting bars 1 to the exposed steel bar heads 41 of the upper and lower sections of the original pier column, and fixing them by concentric lap welding, thereby effectively increasing the shear resistance of the pier column.

[0029] Reference Figure 1 and Figure 2 As shown, in the specific implementation, steel formwork 2 is used for reinforcement. The steel formwork 2 is welded from two semicircular plates to form a circular ring structure, which is closely attached to the upper and lower sections of the original pier column, forming a closed pouring area 21. The pouring holes 22 opened in the steel formwork 2 are equipped with grouting plugs 23, which facilitates concrete pouring without disassembly, effectively improving construction efficiency.

[0030] During the concrete pouring process, the concrete fills the pouring hole 22 and wraps around the pouring area 21, forming a stable connection section 51. This structure not only improves the connectivity and overall structural strength of the upper and lower sections of the original pier column, but also further enhances the connection effect through the concentric connection of the upper and lower staggered first connecting bars 1 and the original pier column steel bar heads 41.

[0031] In addition, refer to Figure 2 As shown, the steel formwork 2 is designed to include multiple fixing holes 24. The exposed rebar heads 41 on the ends of the chiseled upper and lower sections of the original pier and the multiple connecting columns 25 welded to the first connecting bars 1 can pass through the fixing holes 24 and be welded to the steel formwork 2, ensuring the strength of the reinforced structure. The thickness of the steel formwork 2 ranges from 6mm to 10mm. In this embodiment, the thickness of the steel formwork 2 is 8mm, providing sufficient support. Furthermore, a portion of the inner wall of the upper and lower ends of the steel formwork 2 is embedded in the outer peripheral wall of the chiseled upper and lower sections of the original pier, further enhancing the overall strength.

[0032] Reference Figure 2 As shown, a structural interface adhesive layer 6 is applied to the contact surfaces of the joints to enhance bonding, and roughening is performed to improve surface adhesion. Ring ribs 7 are welded to the inside or outside of the annular first connecting rib 1. Multiple ring ribs 7 are arranged in a circular ring shape along the vertical axis, further increasing the stability and load-bearing capacity of the overall structure.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A highway interchange reconstruction pillar reinforcement structure, characterized by: include: A first connecting rib (1), wherein a plurality of the first connecting ribs (1) are provided and used to connect the exposed steel bar heads (41) on the end faces of the upper and lower sections of the original pier column that have been chiseled open, wherein the first connecting rib (1) and the exposed steel bar heads (41) on the end faces of the upper and lower sections of the original pier column are concentrically butted and fixed by concentric lap welding; A steel template (2), the steel template (2) comprising two semicircular plates, the two semicircular plates being welded to form a circular ring, the steel template (2) being simultaneously fixed to the upper and lower sections of the original pier columns that have been cut open, and forming a pouring area (21), the steel template (2) being provided with a pouring hole (22), and a slurry stopper (23) being provided on the pouring hole (22); A concrete layer (5) is poured into the pouring hole (22), and is wrapped and poured in the pouring area (21) to form a connecting section (51).

2. The highway interchange reconstruction pillar reinforcement structure according to claim 1, characterized in that: The concentrically connected portions of the adjacent first connecting bars (1) and the steel bar heads (41) of the original pier columns are staggered in an upper and lower manner.

3. The highway interchange reconstruction pillar reinforcement structure according to claim 2 is characterized by: The steel template (2) is provided with a plurality of fixing holes (24), and a plurality of connecting columns (25) are welded to the exposed steel bar heads (41) on the end faces of the upper and lower sections of the original pier columns. The connecting columns (25) are arranged to pass through the fixing holes (24) in correspondence, and one end of the connecting column (25) that passes through the fixing hole (24) is welded to the steel template (2).

4. The highway interchange reconstruction pillar reinforcement structure according to claim 3 is characterized by: The thickness of the steel template (2) is 6mm-10mm.

5. The highway interchange reconstruction pillar reinforcement structure according to claim 4 is characterized in that: Parts of the inner walls at the upper and lower ends of the steel template (2) are respectively embedded in the outer peripheral walls of the upper and lower sections of the original pier column that have been chiseled open.

6. The highway interchange reconstruction pillar reinforcement structure according to claim 5, characterized in that: The contact surfaces of the upper and lower sections of the original pier columns are both coated with a structural interface adhesive layer (6), and the contact surfaces are roughened.

7. The highway interchange reconstruction pillar reinforcement structure according to claim 6, characterized in that: Ring ribs (7) are welded to the inner or outer sides of the ring wall formed by the plurality of first connecting ribs (1); the ring ribs (7) are arranged in a circular ring shape and a plurality of them are arranged vertically.

Images