Prefabricated hollow slab side edge and outer wall connecting node structure

Abstract

The utility model relates to a prefabricated hollow slab side edge and outer wall connecting node structure which comprises an existing wall body and an existing top plate, the bottom of the existing wall body is connected with the ground, one side of the existing top plate is tightly attached to the top of the outer wall face of the existing wall body, and a plurality of concrete filling holes are formed in the top of the existing top plate. A plurality of concrete filling holes are formed in the top plate, tie bars are arranged in the concrete filling holes, the other ends of the tie bars penetrate through the existing wall body and are located on the inner wall face of the existing wall body, and the first steel base plate is connected with the existing wall body through nuts. And meanwhile, angle steel is adopted to reinforce the internal corner part where the bottom of the existing top plate and the wall intersect, and an acting point is provided. And under the condition that the existing wall body and the existing top plate are not dismounted, the node at the part is reinforced, so that the construction work amount is greatly reduced, the construction speed is high, the working procedure is simple and rapid, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering construction, in particular to a connection node structure of a prefabricated hollow slab side and an external wall. Background Art

[0002] With the rapid development of social modernization, many old house structures are affected by various factors such as the natural environment and the use environment, showing defects such as insufficient bearing capacity to varying degrees and structural performance that is difficult to meet the current production and living needs. The house structures need to be reinforced and renovated.

[0003] The spacing between transverse walls and the span of prefabricated floor slabs in many old houses are relatively large, exceeding 4m. In addition, the sides of the floor slabs are neither tied to the exterior walls nor provided with ring beams, resulting in poor structural stability in this area and posing a major safety hazard.

[0004] In view of the above situation, the utility model provides a prefabricated hollow slab side and external wall connection node structure, which overcomes the defects of the prior art, reduces the construction process of removing the original floor slab and re-casting, and reinforces the node of the part without removing the existing wall and the existing floor slab. The utility model is simple and fast in construction, fast in speed, small in engineering quantity and low in cost. Utility Model Content

[0005] The utility model aims to provide a connection node structure between the side of a prefabricated hollow slab and an exterior wall, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prefabricated hollow slab side and exterior wall connection node structure, comprising an existing wall and an existing top plate, wherein the bottom of the existing wall is connected to the ground, one side of the existing top plate is tightly fitted with the top of the exterior wall of the existing wall, a plurality of concrete-filled openings are opened on the top of the existing top plate, one end of a tie bar is arranged inside the plurality of concrete-filled openings, the other end of the tie bar passes through the existing wall and is located at the inner wall surface of the existing wall, a first steel pad is arranged at the other end of the tie bar, the back side of the first steel pad is in contact with the existing wall, the first steel pad is connected to the existing wall through a nut, an angle steel is arranged at the connection between the existing wall and the bottom of the existing top plate, a first pair of through bolts is arranged at the front center of the angle steel, the first pair of through bolts passes through the existing wall and the other end is located at the inner wall of the existing wall, a second pair of through bolts is arranged at the top center of the angle steel, the other end of the second pair of through bolts passes through the existing top plate and is located above the tie bar.

[0008] Preferably, a third steel plate is provided at the other end of the first pair of through bolts, the back side of the third steel plate is in contact with the inner wall of the existing wall, and the third steel plate is fixed to the existing wall by nuts.

[0009] Preferably, the first pair of through bolts are connected to the angle steel connection point via nuts.

[0010] Preferably, a second steel plate is provided at the other end of the second through bolt, the top of the second steel plate is in contact with the bottom of the tie bar, and the second steel plate is fixed to the tie bar by a nut.

[0011] Preferably, the second pair of through bolts are connected to the angle steel connection through nuts.

[0012] Preferably, the concrete-filled hole is filled with concrete.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a node structure for connecting the side of a prefabricated hollow slab with an external wall. Tie bars are used to tie the existing top slab to the existing wall from the top of the existing top slab. Angle steel is used to reinforce the inner corner where the bottom of the existing top slab and the wall intersect to provide a fulcrum. Without dismantling the existing wall and the existing top slab, the node at this part is reinforced, which greatly reduces the construction workload, has a fast construction speed, simple and quick procedures, and reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0017] In the figure: 1. existing wall; 2. first steel plate; 3. nuts; 4. concrete to fill the opening; 5. tie bars; 6. existing top plate; 7. concrete; 8. second steel plate; 9. first pair of through bolts; 10. angle steel; 11. second pair of through bolts; 12. third steel plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-2 , the utility model provides a technical solution:

[0022] A prefabricated hollow slab side and exterior wall connection node structure, comprising an existing wall 1 and an existing top plate 6, wherein the bottom of the existing wall 1 is connected to the ground, one side of the existing top plate 6 is tightly fitted with the top of the exterior wall of the existing wall 1, a plurality of concrete-filled openings 4 are opened on the top of the existing top plate 6, one end of a tie bar 5 is arranged inside the plurality of concrete-filled openings 4, the other end of the tie bar 5 passes through the existing wall 1 and is located at the inner wall surface of the existing wall 1, and the other end of the tie bar 5 is provided with a first steel pad 2 The back of the first steel plate 2 is in contact with the existing wall 1, and the first steel plate 2 is connected to the existing wall 1 through a nut 3. An angle steel 10 is provided at the bottom connection between the existing wall 1 and the existing top plate 6. A first pair of through bolts 9 is provided at the center of the front of the angle steel 10. The first pair of through bolts 9 pass through the existing wall 1 and the other end is located at the inner wall of the existing wall 1. A second pair of through bolts 11 is provided at the top center of the angle steel 10. The other end of the second pair of through bolts 11 passes through the existing top plate 6 and is located above the tie bar 5.

[0023] Specifically, the existing wall 1 is a brick exterior wall with a wall thickness of 240 mm and a brick strength grade of M10.

[0024] The existing top plate 6 is a prefabricated hollow floor plate, the side of which is parallel to the outer wall and is closely attached to the outer wall, but is not erected on the top of the outer wall.

[0025] The tie bars 5 are φ8 threaded steel bars, 1000mm in length, 1000mm in spacing, and the first one on the side of the transverse wall is no more than 1000mm away from the transverse wall. One end is a straight end that penetrates the existing wall for fixation, and the other end has a hook that is connected and fixed to the existing top plate. The existing top plate 6 is tied to the existing wall 1 to form a whole, thereby enhancing the stability of the structure.

[0026] The angle steel 10 is a L100×6 full-length angle steel, which is fixed to the inner corner where the side of the existing top plate 6 intersects with the existing wall 1, providing a fulcrum for the inner corner where the existing wall 1 and the existing top plate 6 are connected, while connecting the two into a whole to enhance the structural integrity.

[0027] Furthermore, a third steel plate 12 is provided at the other end of the first pair of through bolts 9 , the back side of the third steel plate 12 is in contact with the inner wall of the existing wall 1 , and the third steel plate 12 is fixed to the existing wall 1 by nuts 3 .

[0028] Furthermore, the first pair of through bolts 9 and the angle steel 10 are connected by nuts 3 .

[0029] Furthermore, a second steel plate 8 is provided at the other end of the second through bolt 11 , the top of the second steel plate 8 is in contact with the bottom of the tie bar 5 , and the second steel plate 8 is fixed to the tie bar 5 by a nut 3 .

[0030] Furthermore, the second pair of through bolts 11 and the angle steel 10 are connected at their connection points by nuts 3 .

[0031] Specifically, the first pair of through bolts 9 and the second pair of through bolts 11 are M12 through bolts, which are penetrated through the existing wall 1 and the existing top plate 6 to fix the angle steel 10 .

[0032] The first steel pad 2, the second steel pad 8, and the third cylinder pad 12 are -100×100×5 steel plates, which are placed at the connection points between the tie bars 5 and the first pair of through bolts 9 and the existing wall 1, and at the connection points between the second pair of through bolts 11 and the existing top plate 6. The contact area between the connection points and the wall and floor is increased, and the stress per unit area is reduced.

[0033] Furthermore, the interior of the concrete-filled opening 4 is filled with concrete 7, which is C20 concrete, and the hole opening position at the connection point between the tie bar and the existing top plate is filled with concrete.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated hollow slab side and exterior wall connection node structure, comprising an existing wall (1) and an existing top slab (6), characterized in that: The bottom of the existing wall (1) is connected to the ground, one side of the existing top plate (6) is tightly fitted with the top of the outer wall of the existing wall (1), a plurality of concrete-filled openings (4) are opened on the top of the existing top plate (6), one end of a tie bar (5) is arranged inside the plurality of concrete-filled openings (4), the other end of the tie bar (5) passes through the existing wall (1) and is located at the inner wall of the existing wall (1), the other end of the tie bar (5) is provided with a first steel pad (2), the back side of the first steel pad (2) is connected to the existing wall (1) The first steel pad (2) is connected to the existing wall (1) through a nut (3); an angle steel (10) is provided at the bottom connection between the existing wall (1) and the existing top plate (6); a first pair of through bolts (9) is provided at the front center of the angle steel (10); the first pair of through bolts (9) pass through the existing wall (1) and the other end is located at the inner wall of the existing wall (1); a second pair of through bolts (11) is provided at the top center of the angle steel (10); the other end of the second pair of through bolts (11) passes through the existing top plate (6) and is located above the tie bar (5).

2. A prefabricated hollow slab side and exterior wall connection node structure according to claim 1, characterized in that: A third steel plate (12) is provided at the other end of the first pair of through bolts (9), the back side of the third steel plate (12) is in contact with the inner wall of the existing wall (1), and the third steel plate (12) is fixed to the existing wall (1) via a nut (3).

3. The connection node structure between the side edge of a prefabricated hollow slab and an exterior wall according to claim 1, characterized in that: The first pair of through bolts (9) and the angle steel (10) are connected at their connection points via nuts (3).

4. The connection node structure between the side edge of a prefabricated hollow slab and an exterior wall according to claim 1, characterized in that: A second steel plate (8) is provided at the other end of the second through bolt (11), the top of the second steel plate (8) is in contact with the bottom of the tie bar (5), and the second steel plate (8) is fixed to the tie bar (5) by a nut (3).

5. The connection node structure between the side edge of a prefabricated hollow slab and an exterior wall according to claim 1, characterized in that: The second pair of through bolts (11) and the angle steel (10) are connected at their connection points via nuts (3).

6. The connection node structure between the side edge of a prefabricated hollow slab and an exterior wall according to claim 1, characterized in that: The concrete filling hole (4) is filled with concrete (7).

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