A seismic-strength steel strand mesh-ECC locally reinforced beam joint seismic-strengthened structure

Abstract

This utility model belongs to the field of seismic reinforcement structures, specifically a high-strength steel strand mesh-ECC locally reinforced beam joint seismic reinforcement structure, which includes beams and columns and a reinforcement mechanism. One end of the beam or column is fixedly connected to a beam frame, and the same reinforcement mechanism is provided at the joint between the beam frame and the beam or column. The reinforcement mechanism includes a first steel strand mesh, a second steel strand mesh, a first connecting plate, a first L-shaped connecting plate, a second connecting plate, a second L-shaped connecting plate, and fixing bolts. The first steel strand mesh is fitted onto one side of the beam or column and the beam frame, and the second steel strand mesh is fitted onto the other side. The first and second steel strand meshes are compatible, and the first connecting plate is fixedly connected to the first steel strand mesh. This utility model, through the cooperation of its various components, can reinforce the beam joint, improving its seismic and bending resistance.

Description

Technical Field

[0001] This utility model relates to the field of seismic reinforcement structure technology, and in particular to a seismic reinforcement structure for a high-strength steel strand mesh-ECC locally reinforced beam node. Background Technology

[0002] Reinforced concrete frame beams and columns, as commonly used structural components, have been widely applied in various aspects of building structures;

[0003] However, due to factors such as prolonged use of building structures, improper maintenance, and changes in their intended use, the load-bearing capacity of some reinforced concrete beam-column joints may no longer meet the requirements for use and seismic resistance.

[0004] Therefore, this application proposes a seismic strengthening structure for high-strength steel strand mesh-ECC locally reinforced beam joints to solve the problems in the background art.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a seismic reinforcement structure for high-strength steel strand mesh-ECC locally reinforced beam nodes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A seismic-strengthened structure for high-strength steel strand mesh-ECC locally reinforced beam joints includes beams, columns, and a reinforcement mechanism;

[0009] One end of the beam-column is fixedly connected to a beam frame, and the same reinforcement mechanism is provided at the node between the beam frame and the beam-column.

[0010] The reinforcement mechanism includes a first steel strand mesh, a second steel strand mesh, a first connecting plate, an L-shaped connecting plate, a second connecting plate, and two fixing bolts. The first steel strand mesh is fitted onto one side of the beam / column and the beam frame, while the second steel strand mesh is fitted onto the other side. The first and second steel strand meshes are compatible. A first connecting plate is fixedly connected to the first steel strand mesh, and two L-shaped connecting plates are fixedly connected to the first steel strand mesh. Through the coordinated design between the first and second steel strand meshes and the ECC layer, the beam joint can be reinforced, improving its seismic and bending resistance. The coordinated design between the first connecting plate, the second connecting plate, the L-shaped connecting plate, the fixing plates, and the fixing bolts allows for adjustment of the tension between the first and second steel strand meshes according to actual conditions, facilitating installation and improving flexibility.

[0011] Preferably, both L-shaped connecting plates and the connecting plate are provided with threaded holes, which facilitate the connection between the steel strand meshes.

[0012] Preferably, two connecting plates are fixedly connected to the second steel strand mesh, the second connecting plates corresponding to the first connecting plate. Two L-shaped connecting plates are fixedly connected to the second steel strand mesh, the two L-shaped connecting plates corresponding to the two L-shaped connecting plates, which facilitates the fixing of the first steel strand mesh and the second steel strand mesh.

[0013] Preferably, a fixing plate is welded to one side of each of the two L-shaped connecting plates and one of the connecting plates. Multiple through holes are formed on each of the fixing plates, each through hole corresponding to a plurality of threaded holes. The through holes are arranged at equal intervals on the fixing plates, and each fixing plate corresponds to a plurality of threaded holes. The threaded holes are arranged at equal intervals on the connecting plate and the two L-shaped connecting plates. This facilitates adjustment of the tension between the steel strand meshes according to actual conditions, improving flexibility and convenience.

[0014] Preferably, each of the multiple through holes is provided with a fixing bolt, and one end of each of the multiple fixing bolts is threadedly connected to the multiple threaded holes to fix the connecting plate one, connecting plate two, L-shaped connecting plate one and L-shaped connecting plate two together.

[0015] Preferably, the first and second steel strand meshes are provided with the same ECC layer, which is connected to the beams, columns, and beam frames. After the steel strand mesh is installed, an external template is installed, and then the ECC material is poured. During the pouring process, attention should be paid to vibration and compaction to ensure that the ECC material is fully bonded to the surface of the steel strand mesh, beams, columns, and beam frames. After the ECC reaches the design strength, the template is removed. This achieves a good bonding effect between the steel strand mesh and the concrete at the beam joint. At the same time, its multi-crack characteristic can disperse seismic energy, reduce the risk of concentrated damage, and further enhance seismic resistance.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model discloses a high-strength steel strand mesh-ECC locally reinforced beam joint seismic strengthening structure. Through the coordinated design of the steel strand mesh one, steel strand mesh two, and ECC layer, the beam joint can be strengthened, improving its seismic and bending resistance. The coordinated design of the connecting plate one, connecting plate two, L-shaped connecting plate one, L-shaped connecting plate two, fixing plate, and fixing bolts allows for adjustment of the tension between steel strand mesh one and steel strand mesh two according to actual conditions, facilitating installation and improving flexibility. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary. The structures, proportions, sizes, etc., shown in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance, and any modification of the structure, change of the proportional relationship, or adjustment of the size is not permitted.

[0019] Figure 1 This is a three-dimensional structural diagram of a high-strength steel strand mesh-ECC locally reinforced beam node seismic strengthening structure proposed in this utility model;

[0020] Figure 2 This is a bottom view of the seismic reinforcement structure of a high-strength steel strand mesh-ECC locally reinforced beam node proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the seismic reinforcement structure of a high-strength steel strand mesh-ECC locally reinforced beam node proposed in this utility model.

[0022] Figure 4This is a partially exploded schematic diagram of a seismic-resistant reinforcement structure for a high-strength steel strand mesh-ECC locally reinforced beam node proposed in this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Beam and column; 2. Beam frame; 3. Steel strand mesh one; 4. Steel strand mesh two; 5. ECC layer; 6. Connecting plate one; 7. L-shaped connecting plate one; 8. Threaded hole one; 9. Connecting plate two; 10. L-shaped connecting plate two; 11. Fixing plate; 12. Through hole; 13. Fixing bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a seismic reinforcement structure for high-strength steel stranded mesh-ECC locally reinforced beam joints, referring to... Figures 1-4 A seismic-resistant reinforcement structure for high-strength steel strand mesh-ECC locally reinforced beam joints, comprising beam-column 1 and reinforcement mechanism;

[0026] One end of beam-column 1 is fixedly connected to beam frame 2, and the same reinforcement mechanism is provided at the node between beam frame 2 and beam-column 1.

[0027] The reinforcement mechanism includes steel strand mesh 1 (3), steel strand mesh 2 (4), connecting plate 1 (6), L-shaped connecting plate 1 (7), connecting plate 2 (9), L-shaped connecting plate 2 (10), and fixing bolts 13. Steel strand mesh 1 (3) is fitted on one side of the beam / column 1 and beam frame 2, and steel strand mesh 2 (4) is fitted on the other side. Steel strand mesh 1 (3) and steel strand mesh 2 (4) are compatible. Connecting plate 1 (6) is fixedly connected to steel strand mesh 1 (3), and two L-shaped connecting plates 1 (7) are fixedly connected to steel strand mesh 1 (3). The steel strand mesh is connected via... The coordinated design between mesh 3, steel strand mesh 4, and ECC layer 5 enables the reinforcement of beam joints, improving their seismic and bending resistance. The coordinated design between connecting plate 6, connecting plate 9, L-shaped connecting plate 7, L-shaped connecting plate 10, fixing plate 11, and fixing bolt 13 allows for adjustment of the tension between steel strand mesh 3 and steel strand mesh 4 according to actual conditions, facilitating the installation of the steel strand mesh and improving flexibility.

[0028] In this method, threaded holes 8 are provided on both L-shaped connecting plates 7 and 6. The multiple threaded holes 8 facilitate the connection between the steel strand meshes.

[0029] In this method, two connecting plates 2 9 are fixedly connected to the steel strand mesh 2 4, and the connecting plates 2 9 correspond to the connecting plate 1 6. Two L-shaped connecting plates 2 10 are fixedly connected to the steel strand mesh 2 4, and the two L-shaped connecting plates 2 10 correspond to the two L-shaped connecting plates 1 7 respectively, which facilitates the fixing between the steel strand mesh 1 3 and the steel strand mesh 2 4.

[0030] In this method, a fixing plate 11 is welded to one side of each of the two L-shaped connecting plates 10 and 9. Multiple through holes 12 are provided on each of the fixing plates 11, and the multiple through holes 12 correspond to multiple threaded holes 8. The multiple through holes 12 are arranged at equal intervals on the multiple fixing plates 11, and the multiple threaded holes 8 are arranged at equal intervals on the connecting plate 6 and the two L-shaped connecting plates 7. This facilitates the adjustment of the tension between the steel strand meshes according to the actual situation, improving flexibility and convenience.

[0031] In this method, each of the multiple through holes 12 is provided with a fixing bolt 13. One end of the multiple fixing bolts 13 is threadedly connected to multiple threaded holes 8, which are used to fix the connecting plate 6, connecting plate 9, L-shaped connecting plate 7 and L-shaped connecting plate 10. Multiple limiting holes are opened on the beam column 1 and the beam frame 2, which correspond to the multiple threaded holes 8 respectively. One end of the multiple fixing bolts 13 extends into the multiple limiting holes. The steel strand mesh can be further limited and fixed by the interaction between the fixing bolts 13 and the limiting holes.

[0032] In this method, steel strand mesh 1 (3) and steel strand mesh 2 (4) share the same ECC layer 5. ECC layer 5 is connected to beam-column 1 and beam frame 2. After the steel strand mesh is installed, an external formwork is installed, and then ECC material is poured. During pouring, attention should be paid to compaction to ensure the ECC material fully bonds to the steel strand mesh and the surfaces of beam-column 1 and beam frame 2. After the ECC reaches its design strength, the formwork is removed. This achieves good bonding between the steel strand mesh and the beam joint concrete. Simultaneously, its multi-crack characteristic can disperse seismic energy, reducing the risk of concentrated damage and further enhancing seismic resistance. The ECC layer 5 is composed of cement, fly ash, sand, and polyvinyl alcohol (P...). The polymer material is composed of cement, fly ash, sand, water, and admixtures. The selection and preparation of the ECC mix ratio are based on the scheme in the invention patent "A High-Toughness Cement-Based Composite Material" (patent number CN107382183). The specific components are cement, fly ash, sand, water, water-reducing agent and PVA fiber. The mass ratio of cement:fly ash:sand:water:water-reducing agent is 1:(1.0~1.2):(0.6~0.8):(0.42~0.57):(0.001~0.003). The PVA fiber content is 13~20 kg / m3, based on the total volume of cement, fly ash, sand and water-reducing agent after uniform mixing.

[0033] Working principle: In use, first clean the surfaces of beam-column 1 and beam frame 2 to increase the adhesion between them and the ECC layer 5. Then, fit the steel strand mesh 1-3 and steel strand mesh 2-4, which are compatible with beam-column 1 and beam frame 2, on their respective sides, so that one of the multiple through holes 12 on the fixing plate 11 corresponds to the threaded hole 8. Then, pass one end of the fixing bolt 13 through its through hole 12 and thread it into the corresponding threaded hole 8, thereby achieving the effect of fixing the steel strand mesh 1-3 and steel strand mesh 2-4. At this time, the steel strand mesh is made of high-strength steel strands, which has the characteristics of high strength and high elastic modulus, and can provide the structure with greater tensile strength, effectively bear the tensile force generated under earthquake action, limit the deformation of beam joints, and improve seismic resistance.

[0034] At the same time, the tension of the steel strand mesh can be adjusted according to the actual situation, which improves flexibility;

[0035] After the steel strand mesh is installed, an external formwork is installed, and then ECC material is poured. During the pouring process, attention should be paid to vibration and compaction to ensure that the ECC material is fully bonded to the steel strand mesh and the surfaces of beams and columns 1 and beam frames 2. After the ECC reaches the design strength, the formwork is removed. This achieves a good bond between the steel strand mesh and the concrete at the beam joint. At the same time, its multi-crack characteristic can disperse seismic energy, reduce the risk of concentrated damage, and further enhance seismic resistance.

[0036] The technological advancement of this invention compared to existing technologies is that the cooperation of various components enables the reinforcement of beam joints, thereby improving the seismic and bending resistance of the beam joints and making them more practical.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-strength steel wire mesh-ECC local reinforcement beam joint seismic reinforcement structure, characterized in that, Includes beams and columns (1) and reinforcement mechanisms; One end of the beam-column (1) is fixedly connected to a beam frame (2), and the same reinforcement mechanism is provided at the node between the beam frame (2) and the beam-column (1); The reinforcement mechanism includes a steel strand mesh one (3), a steel strand mesh two (4), a connecting plate one (6), an L-shaped connecting plate one (7), a connecting plate two (9), an L-shaped connecting plate two (10), and a fixing bolt (13). A steel strand mesh one (3) is fitted on one side of the beam column (1) and the beam frame (2), and a steel strand mesh two (4) is fitted on the other side of the beam column (1) and the beam frame (2). The steel strand mesh one (3) is adapted to the steel strand mesh two (4). A connecting plate one (6) is fixedly connected to the steel strand mesh one (3), and two L-shaped connecting plates one (7) are fixedly connected to the steel strand mesh one (3).

2. The joint seismic strengthening structure of a high-strength steel wire mesh-ECC partially reinforced beam according to claim 1, characterized in that, Both of the L-shaped connecting plates (7) and the connecting plate (6) are provided with threaded holes (8).

3. The seismic reinforcement structure of a high-strength steel strand mesh-ECC locally reinforced beam node according to claim 2, characterized in that, Two connecting plates (9) are fixedly connected to the second (4) of the steel strand mesh, and the second (9) of the connecting plate corresponds to the first (6) of the connecting plate.

4. The seismic reinforcement structure of a high-strength steel strand mesh-ECC locally reinforced beam node according to claim 3, characterized in that, Two L-shaped connecting plates (10) are fixedly connected to the steel strand mesh (4), and the two L-shaped connecting plates (10) correspond to the two L-shaped connecting plates (7) respectively.

5. The seismic reinforcement structure of a high-strength steel strand mesh-ECC locally reinforced beam joint according to claim 4, characterized in that, A fixing plate (11) is welded to one side of each of the two L-shaped connecting plates (10) and the connecting plate (9). Multiple through holes (12) are provided on each of the fixing plates (11), and the multiple through holes (12) correspond to the multiple threaded holes (8) respectively.

6. The seismic reinforcement structure of a high-strength steel strand mesh-ECC locally reinforced beam joint according to claim 5, characterized in that, Each of the multiple through holes (12) is provided with a fixing bolt (13), and one end of each of the multiple fixing bolts (13) is threadedly connected to each of the multiple threaded holes (8).

7. The seismic reinforcement structure for a high-strength steel strand mesh-ECC locally reinforced beam joint according to claim 1, characterized in that, The first (3) and the second (4) of the steel strand mesh are provided with the same ECC layer (5), and the ECC layer (5) is connected to the beam column (1) and the beam frame (2).

8. The seismic reinforcement structure of a high-strength steel strand mesh-ECC locally reinforced beam joint according to claim 5, characterized in that, The multiple through holes (12) are arranged at equal intervals on the multiple fixing plates (11), and the multiple fixing plates (11) correspond to the multiple threaded holes (8). The multiple threaded holes (8) are arranged at equal intervals on the connecting plate (6) and the two L-shaped connecting plates (7).

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