Beam top bonded steel and shear wall end anchoring joint

Abstract

The utility model discloses a beam top bonding steel and shear wall end anchoring node which comprises a reinforcing steel plate, an L-shaped base plate, an inner side anchor plate and an outer side anchor plate, the reinforcing steel plate is bonded on the beam top of a frame beam, the horizontal portion of the L-shaped base plate is tightly attached to the upper surface of the reinforcing steel plate, and the vertical portion of the L-shaped base plate is tightly attached to the inner side of a shear wall. The L-shaped base plate is arranged on the frame beam and anchored to the frame beam and the shear wall through chemical anchor bolts, the inner side anchor plate and the outer side anchor plate are located on the inner side and the outer side of the shear wall respectively and bonded to the shear wall through structural adhesive, and the vertical portion of the L-shaped base plate is clamped in the middle and anchored through the opposite-pulling anchor bolts. The device is simple in structure, convenient to operate, low in construction difficulty and high in applicability, anchoring of the bonded steel at the top of the frame beam at the shear wall end is achieved, the bearing capacity, stability and anti-seismic performance of the beam are improved, the service life of the beam is prolonged, and the reinforcing quality is easy to control.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an anchoring node for bonding steel plates to the top of a beam and the end of a shear wall. Background Technique

[0002] When existing buildings are structurally renovated, due to the improvement and change of the use function, the bearing capacity of the original frame beam cannot meet the current requirements. At this time, the frame beam needs to be strengthened, and the method of bonding steel plates is often used for strengthening. When bonding steel plates to the top of the frame beam of an existing building for structural strengthening, when the bonding steel plate at the top of the frame beam encounters the shear wall structure, it is necessary to make the anchoring length of the bonding steel plate at the top of the beam at the shear wall position meet the requirements, and it is necessary to take reinforcement measures for the node.

[0003] In the existing structural reinforcement construction drawings, the anchoring method of bonding steel plates to the top of the frame beam at the end of the frame column is shown, but the direct anchoring node of bonding steel plates to the top of the frame beam at the end of the shear wall is not shown. Since the frame beam is a relatively independent component, the anchoring node of the frame beam at the end of the frame column is directly strengthened by using hoop ties. However, the shear wall is a continuous member and cannot be technically processed by using hoop ties. The existing reinforcement methods are difficult to apply.

[0004] Therefore, how to create a new anchoring node for bonding steel plates to the top of a beam and the end of a shear wall is one of the important research and development topics at present. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an anchoring node for bonding steel plates to the top of a beam and the end of a shear wall, which can effectively strengthen the connection end of the frame beam and the shear wall, increase the bearing capacity, stability and seismic resistance of the beam, have a small construction difficulty, be convenient to operate, and be easy to control the reinforcement quality, so as to overcome the deficiencies of the prior art.

[0006] To solve the above technical problem, the utility model provides an anchoring node for bonding steel plates to the top of a beam and the end of a shear wall, including a reinforcement steel plate, an L-shaped backing plate, an inner anchor plate and an outer anchor plate;

[0007] The reinforcement steel plate is pasted on the top of the frame beam, and the end of the reinforcement steel plate abuts against the inner side of the shear wall;

[0008] The horizontal part of the L-shaped backing plate is closely attached to the upper surface of the reinforcement steel plate, and the vertical part is closely attached to the inner side of the shear wall. The L-shaped backing plate is anchored to the frame beam and the shear wall respectively through chemical anchor bolts;

[0009] The inner anchor plate is in a U-shape. The protruding section in the middle is closely attached to the inner side of the L-shaped backing plate, and the straight sections on both sides are closely attached to the inner side of the shear wall. The protruding section and the straight sections are connected by an inclined section;

[0010] The outer anchor plate is in a long strip shape, closely attached to the outer side of the shear wall and corresponding to the position of the inner anchor plate;

[0011] The outer and inner anchor plates are bonded to the shear wall with structural adhesive, and the outer and inner anchor plates are anchored together with tie bolts.

[0012] As an improvement of this utility model, the width of the L-shaped pad is equal to that of the reinforcing steel plate.

[0013] Furthermore, the outer anchor plate, the inner anchor plate, and the L-shaped pad are all of equal thickness.

[0014] Furthermore, the slope of the inclined section of the inner anchor plate is 1:3.

[0015] Furthermore, each pair of inner and outer anchor plates is anchored by four tie bolts, two of which are located on the protruding section in the middle, and the other two are located on the straight sections on both sides.

[0016] Furthermore, the exposed surfaces of the reinforcing steel plate, L-shaped pad, outer anchor plate, and inner anchor plate are all treated with fireproofing and corrosion protection.

[0017] With this design, the present invention has at least the following advantages:

[0018] 1. Based on the design atlas, standards and acceptance specifications for concrete reinforcement, this paper analyzes the anchorage principle of the steel-bonded ends of frame beams. By adding L-shaped pads and inner anchor plates at the anchorage nodes at the beam-wall junction, and setting outer anchor plates on the outside of the shear wall, and using tie bolts to tie the L-shaped pads, inner anchor plates and outer anchor plates together, the anchorage of the steel-bonded ends of the frame beams at the shear wall position is achieved, which effectively increases the beam's load-bearing capacity, stability and seismic performance, and extends the beam's service life.

[0019] 2. It has a simple structure, is easy to operate, has low construction difficulty, and the reinforcement quality is easy to control, making it highly applicable. Attached Figure Description

[0020] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a top view of the structure of this utility model.

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of section AA.

[0023] Figure 3 This is a schematic diagram of the inner anchor plate in this utility model.

[0024] Description of reference numerals: 1, reinforcing steel plate; 2, L-shaped backing plate; 3, inner anchor plate; 31, protruding section; 32, straight section; 33, inclined section; 4, outer anchor plate; 5, chemical anchor bolt; 6, tie anchor bolt; 7, frame beam; 8, shear wall. Detailed implementation manners

[0025] Please refer to Figure 1 and Figure 2 , the utility model provides a beam-top steel bonding and shear-wall-end anchoring joint, which includes a reinforcing steel plate 1, an L-shaped backing plate 2, an inner anchor plate 3 and an outer anchor plate 4.

[0026] The reinforcing steel plate 1 is bonded to the top of the frame beam 7, and the end of the reinforcing steel plate 1 abuts against the inner side of the shear wall 8.

[0027] The L-shaped backing plate 2 is integrally in a right-angled L shape and has the same width as the reinforcing steel plate 1. The L-shaped backing plate 2 is placed at the joint of the frame beam 7 and the shear wall 8. The horizontal part of the L-shaped backing plate 2 is closely attached to the surface of the reinforcing steel plate 1, and is anchored to the frame beam 7 through the chemical anchor bolt 5 passing through the reinforcing steel plate 1. The vertical part of the L-shaped backing plate 2 is closely attached to the inner side of the shear wall 8 and is anchored to the shear wall 8 through the chemical anchor bolt 5.

[0028] The inner anchor plate 3 is formed by continuously bending a long strip of steel plate into a shape similar to a "Ji" character, and includes a protruding section 31 in the middle, straight sections 32 on both sides, and an inclined section 33 connecting the protruding section 31 and the straight sections 32.

[0029] The protruding section 31 is closely attached to the inner side of the L-shaped backing plate 2, that is, the vertical part of the L-shaped backing plate 2 is pressed against the inner side of the shear wall 8. The straight section 33 is closely attached to the inner side of the shear wall 8 and is bonded to the shear wall 8 through structural adhesive. The slope of the inclined section 33 is 1:3.

[0030] It should be noted that the protruding section 31, the straight section 32 and the inclined section 33 are names defined for different parts of the inner anchor plate 3 for the convenience of description, and the inner anchor plate 3 is a steel plate with equal thickness and continuous integration.

[0031] The outer anchor plate 4 is in a long strip shape, closely attached to the outer side of the shear wall 8 and bonded to the shear wall 8 through structural adhesive.

[0032] The position of the outer anchor plate 4 corresponds to that of the inner anchor plate 3, and the outer anchor plate 4, the inner anchor plate 3 and the L-shaped backing plate 2 have the same thickness. The outer anchor plate 3 and the inner anchor plate 3 are anchored by 4 tie anchor bolts 6. Two of the tie anchor bolts 6 are located on the protruding section 31 of the inner anchor plate 3. After passing through the L-shaped backing plate 2 and the shear wall 8, these two tie anchor bolts 6 are anchored to the middle position of the outer anchor plate 4. The other two tie anchor bolts 6 are respectively located on the straight sections 32 on both sides, and are anchored to the two side positions of the outer anchor plate 4 after passing through the shear wall 8.

[0033] The exposed surfaces of the reinforcing steel plate 1, L-shaped pad 2, outer anchor plate 3, and inner anchor plate 4 are all treated with fireproofing and corrosion protection.

[0034] The specific steps for reinforcement construction according to this utility model are as follows:

[0035] 1. Mechanically grind the surfaces of frame beam 7 and shear wall 8 until the new structural surface is fully exposed and clean the surface dust.

[0036] 2. A reinforcing steel plate 1 is bonded to the top of the frame beam 7, with the end of the reinforcing steel plate 1 abutting against the inner side of the shear wall 8.

[0037] 3. At the junction of the frame beam 7 and the shear wall 8, an L-shaped pad 2 of the same width as the reinforcing steel plate 1 is added, and the horizontal part of the L-shaped pad 2, the reinforcing steel plate 1 and the top of the beam are anchored by chemical anchors 5, and the vertical part of the L-shaped pad 2 and the inner side of the shear wall 8 are anchored.

[0038] 4. Bond the inner anchor plate 3 and the outer anchor plate 4 to the corresponding positions on the inner and outer sides of the shear wall 8, so that the straight section 33 of the inner anchor plate 3 is tightly attached to the inner side of the shear wall 8, the protruding section 31 is tightly attached to the inner surface of the L-shaped pad 2, and the outer anchor plate 4 is tightly attached to the outer side of the shear wall 8.

[0039] 5. Drill holes in the shear wall 8 and use tie bolts to anchor the inner anchor plate 3 and the outer anchor plate 4 on both sides of the shear wall.

[0040] 6. Fireproof and anti-corrosion treatment shall be applied to the exposed surfaces of the reinforcing steel plate 1, L-shaped pad 2, outer anchor plate 3 and inner anchor plate 4.

[0041] This utility model has a simple structure and is easy to operate. It realizes the anchoring of steel-bonded beams at the top of frame beams to the shear wall end, increases the beam's load-bearing capacity, stability and seismic performance, extends the beam's service life, and has low construction difficulty and easy-to-control reinforcement quality, making it highly applicable.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes or alterations made by those skilled in the art using the above-disclosed technical content shall fall within the protection scope of the present utility model.

Claims

1. A beam top steel bonding and shear wall end anchorage joint, characterized in that, It includes a reinforcing steel plate, an L-shaped backing plate, an inner anchor plate and an outer anchor plate; The reinforcing steel plate is pasted on the top of the frame beam, and the end of the reinforcing steel plate abuts against the inner side of the shear wall; The horizontal part of the L-shaped backing plate is closely attached to the upper surface of the reinforcing steel plate, and the vertical part is closely attached to the inner side of the shear wall. The L-shaped backing plate is anchored to the frame beam and the shear wall respectively through chemical anchor bolts; The inner anchor plate is in a U shape. The protruding section in the middle is closely attached to the inner side of the L-shaped backing plate, and the straight sections on both sides are closely attached to the inner side of the shear wall. The protruding section and the straight sections are connected by an inclined section; The outer anchor plate is in a long strip shape, closely attached to the outer side of the shear wall and corresponding to the position of the inner anchor plate; The places where the outer anchor plate, the inner anchor plate are closely attached to the shear wall are pasted with structural adhesive, and the outer anchor plate and the inner anchor plate are anchored through tension bolts; 2. The beam-top steel bonding and shear wall end anchorage joint according to claim 1, characterized in that, The width of the L-shaped backing plate is equal to that of the reinforcing steel plate; 3. The beam-top steel bonding and shear wall end anchorage joint according to claim 1, characterized in that, The thicknesses of the outer anchor plate, the inner anchor plate and the L-shaped backing plate are equal; 4. The beam-top steel bonding and shear wall end anchorage joint according to claim 1, characterized in that, The slope of the inclined section of the inner anchor plate is 1:3; 5. The beam-top steel bonding and shear wall end anchorage joint according to claim 1, characterized in that, Each pair of inner anchor plates and outer anchor plates are anchored through 4 tension bolts, two are located on the protruding section in the middle, and the other two are respectively located on the straight sections on both sides; 6. The beam-top steel bonding and shear wall end anchorage joint according to claim 1, characterized in that, The exposed surfaces of the reinforcing steel plate, the L-shaped backing plate, the outer anchor plate and the inner anchor plate are all treated with fire and corrosion prevention.

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