High-strength steel wire cloth-UHPC laminated plate for beam reinforcement
By prefabricating and connecting high-strength steel wire cloth-UHPC laminates on site, the problems of complex construction and significant impact on the original structure in existing beam reinforcement methods are solved, achieving a simple and efficient beam reinforcement effect and improving the load-bearing capacity and durability of the beam.
Patent Information
- Application Number
- CN202423175241.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing beam reinforcement methods suffer from problems such as excessive wet work, long construction periods, significant impact on the original structure, and high construction requirements. In particular, the cross-section enlargement reinforcement method and the concrete replacement reinforcement method are prone to damaging the original structure during construction.
High-strength steel wire cloth-UHPC laminate is used. Shear bolts are prefabricated in the factory and connected to the beam on site. The beam is then reinforced with bonding mortar, which reduces on-site wet work. The combination of high-strength steel wire cloth and UHPC board improves load-bearing capacity and crack resistance.
It achieves simple and efficient beam reinforcement, improves construction efficiency, enhances the load-bearing capacity, crack resistance and durability of the beam, and has little impact on the original structure.
Smart Images
Figure CN223675184U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of building structure reinforcement, specifically relates to a high strength steel wire cloth - UHPC laminated board for beam reinforcement. BACKGROUND
[0002] With the continuous development of China's economy and the continuous improvement of national living standards, urbanization is continuously promoted, and various reinforced concrete structures of civil and public buildings appear, but at the same time a series of problems also appear. Because the design service life of buildings in China is usually 50 years or even longer, the old buildings in the 70s and 80s of last century have been unable to meet the living requirements of residents due to design and construction problems, natural aging depreciation and other factors. In public buildings, for example, a large number of reinforced concrete bridges also have hazards such as main beam cracking, excessive deflection, load capacity reduction and the like with the increase of automobile load and traffic volume, which affects normal use and safety, and these reinforced concrete beams need to be reinforced to prolong the service life and durability of the structure. The commonly used method for reinforcing the beam body at present is the section reinforcement method, which has more site wet work, long construction period, and the reinforcement by this method will increase the cross-sectional area of the original component, reducing the original building space. The concrete replacement reinforcement method has high construction requirements for the support device of the original structure, and is easy to damage the steel bars in the original concrete structure during reinforcement. SUMMARY
[0003] In order to overcome the shortcomings of the prior art, the purpose of the present application is to provide a high-strength steel wire cloth-UHPC laminated board for beam reinforcement, in order to solve the problems of wet work, great influence on the original structure, high construction requirements and the like of the traditional reinforcement method.
[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:
[0005] A high-strength steel wire cloth-UHPC laminated board for beam reinforcement, characterized in that it comprises a beam body, a laminated board, bonding mortar and shear-resistant screws. The laminated board comprises high-strength steel wire cloth and UHPC plate, and the surface-treated high-strength steel wire cloth is pressed and embedded in the UHPC plate for fixation.
[0006] In one embodiment, the beam body can be single-sidedly reinforced, double-sidedly reinforced and three-sidedly reinforced, and the beam body surface is provided with a rough surface with a depth of 3-5mm.
[0007] In one embodiment, the beam body and the laminated board are provided with screw holes, the beam body and the laminated board are connected by the shear-resistant screws arranged on the laminated board, and the screw holes are filled with grouting material.
[0008] In one embodiment, the adhesive mortar can be a wet-sprayed polymer mortar or an epoxy mortar, and the adhesive mortar has a thickness of 3-5 mm.
[0009] In one embodiment, the high-strength steel wire cloth has a number of high-strength steel wire bundles per unit width of not less than 150 bundles / m, a thickness of 5-10 mm, and a diameter of not less than 0.2 mm, and the high-strength steel wire cloth is arranged along the length direction of the UHPC plate and can be cut according to the size of the beam body.
[0010] In one embodiment, the UHPC plate has a thickness of 10-20 mm and can have a reinforcement structure or no reinforcement structure.
[0011] The utility model also provides a construction method of the high-strength steel wire cloth-UHPC laminated plate for beam reinforcement, characterized by comprising:
[0012] 1) pouring the UHPC plate and cutting the high-strength steel wire cloth after surface treatment to a suitable size, pressing and embedding the high-strength steel wire cloth into the UHPC plate for fixation, forming a laminated plate and transporting the laminated plate to the site.
[0013] 2) performing a chiseling treatment on the surface of the beam body to form a rough surface, connecting the rough surface to the prefabricated laminated plate through a shear screw, filling adhesive mortar into the gap between the beam body and the laminated plate, injecting grouting material into the screw hole for filling, and completing the reinforcement.
[0014] Compared with the prior art, the utility model has the beneficial effects that:
[0015] 1) simple construction
[0016] The high-strength steel wire cloth-UHPC laminated plate can be prefabricated in a factory, connected to the beam body through a shear screw at the site, reduces the site wet work, shortens the reinforcement construction period, improves the construction efficiency, and does not require large equipment for site construction.
[0017] 2) superior performance
[0018] The high-strength steel wire cloth is light in weight, high in strength, corrosion-resistant, safe and reliable, has good mechanical properties and fire resistance. The high-strength steel wire cloth is not easy to fall off when combined with the UHPC plate, the UHPC well anchors the high-strength steel wire cloth inside and well protects the high-strength steel wire cloth, improving the effectiveness of reinforcement. The combination of the two can greatly improve the bearing capacity and stiffness of the original concrete beam and has good reinforcement effect.
[0019] 3) little influence on the original beam body
[0020] The high-strength steel wire cloth-UHPC laminated plate works together with the original beam body through a shear screw and adhesive mortar, improving the crack resistance, stability and durability. The laminated plate reinforcement does not affect the use space and function of the original structure and has little influence on the structure itself.
[0021] In general, the high-strength steel wire cloth-UHPC laminated plate for beam reinforcement has good mechanical properties and fire resistance, is simple to process and manufacture, has little influence on the original beam body, and solves the problems of the increased section reinforcement method, such as more field wet work, long processing period, and the replacement concrete reinforcement method with high construction requirements. BRIEF DESCRIPTION OF DRAWINGS
[0022] Fig. 1 It is a whole schematic view of the high-strength steel wire cloth-UHPC laminated plate.
[0023] Fig. 2 It is an exploded view of the high-strength steel wire cloth-UHPC laminated plate.
[0024] Fig. 3 It is a schematic view of the reinforced beam body.
[0025] Icon: 1-beam body; 2-laminated plate; 3-bonding mortar; 4-shear screw; 5-high-strength steel wire cloth; 6-UHPC plate; 7-screw hole; 8-grouting material. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.
[0028] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0029] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product is usually placed, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0030] As described above, the common method of reinforcing the beam body, the method of increasing the section reinforcement, has many field wet operations, a long construction period, and increases the section area of the original component after reinforcement, thereby reducing the original building space.
[0031] Therefore, the utility model provides a high strength steel wire cloth - UHPC laminated board for beam reinforcement with good mechanical properties and fire resistance, simple processing and manufacturing, and little influence on the original beam body, which solves the problems of many field wet operations of the method of increasing the section reinforcement, a long processing period and high construction requirements of the method of replacing concrete reinforcement.
[0032] Specifically, referring to Figs. 1-3 The high strength steel wire cloth - UHPC laminated board for beam reinforcement comprises a beam body 1, a laminated board 2, bonding mortar 3 and shear-resistant screws 4.
[0033] In one embodiment of the utility model, the beam body 1 can be single-sidedly reinforced, double-sidedly reinforced and three-sidedly reinforced, and the beam body 1 is provided with a rough surface with a depth of 3-5 mm.
[0034] In one embodiment of the utility model, the beam body 1 and the laminated board 2 are provided with screw holes 7, and the beam body 1 and the laminated board 2 are connected through the shear-resistant screws 4 arranged on the laminated board 2 and filled with grouting material 8 injected into the screw holes 7.
[0035] In one embodiment of the utility model, the bonding mortar 3 can be wet-sprayed polymer mortar or epoxy mortar, and the thickness of the bonding mortar 3 is 3-5 mm.
[0036] In one embodiment of the utility model, the number of high strength steel wire bundles per unit width of the high strength steel wire cloth 5 is not less than 150 bundles per meter, the thickness is 5-10 mm, the diameter is not less than 0.2 mm, the high strength steel wire cloth 5 is arranged along the length direction of the UHPC plate 6, and the high strength steel wire cloth 5 can be cut according to the size of the beam body 1.
[0037] In one embodiment of the utility model, the thickness of the UHPC plate 6 is 10-20 mm, and a reinforced structure or a non-reinforced structure can be used.
[0038] The construction method of the high strength steel wire cloth - UHPC laminated board for beam reinforcement comprises the following steps:
[0039] 1. Pouring UHPC plate 6 and cutting the surface treated high-strength steel wire cloth 5 into appropriate size and pressing into the UHPC plate 6 for fixing, forming the laminated plate 2 and transporting to the site.
[0040] 2. The surface of the beam body 1 is roughened to form a rough surface, connected with the prefabricated laminated plate 2 through the shear screw 4, the bonding mortar 3 is filled in the gap between the beam body 1 and the laminated plate 2, the grouting material 8 is injected into the screw hole 7 for filling, and the reinforcement is completed.
[0041] In summary, the utility model provides a kind of high-strength steel wire cloth-UHPC laminated plate for beam reinforcement, with good mechanical properties and fire resistance, can significantly improve the original beam body crack resistance, stability and durability, little influence on original beam body, simple and convenient to process and manufacture. The problems of large section reinforcement method, long processing cycle and replacement concrete reinforcement method are solved.
[0042] The above is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A high-strength steel wire cloth-UHPC laminate for beam reinforcement, characterized in that, It includes a beam (1), a laminate (2), bonding mortar (3), and shear bolts (4); the laminate (2) includes high-strength steel wire cloth (5) and UHPC board (6), and the surface-treated high-strength steel wire cloth (5) is pressed and embedded into the UHPC board (6) for fixation.
2. The high-strength steel wire cloth-UHPC laminate for beam reinforcement according to claim 1, characterized in that, The beam (1) can be reinforced on one side, on two sides and on three sides. The surface of the beam (1) is provided with a rough surface with a depth of 3~5mm.
3. The high-strength steel wire cloth-UHPC laminate for beam reinforcement according to claim 1, characterized in that, The beam (1) and the laminated plate (2) are provided with screw holes (7). The beam (1) and the laminated plate (2) are connected by shear bolts (4) passing through the laminated plate (2) and filled by injecting grout (8) into the screw holes (7).
4. The high-strength steel wire cloth-UHPC laminate for beam reinforcement according to claim 1, characterized in that, The bonding mortar (3) can be wet-sprayed polymer mortar or epoxy mortar, and the thickness of the bonding mortar (3) is 3~5mm.
5. The high-strength steel wire cloth-UHPC laminate for beam reinforcement according to claim 1, characterized in that, The high-strength steel wire cloth (5) has a unit width of not less than 150 bundles of high-strength steel wire per meter, a thickness of 5~10mm, and a diameter of not less than 0.2mm. The high-strength steel wire cloth (5) is set along the length direction of the UHPC plate (6) and can be cut according to the size of the beam (1).
6. The high-strength steel wire cloth-UHPC laminate for beam reinforcement according to claim 1, characterized in that, The thickness of the UHPC plate (6) is 10~20mm, and it can be reinforced or unreinforced.