L-shaped waterproof connection node structure for superimposed shear wall of basement

Abstract

The utility model provides an L-shaped basement superimposed shear wall waterproof connection node structure which comprises two superimposed shear walls with the side edges in butt joint to form an L-shaped connection structure, each superimposed shear wall comprises an outer acanthus and an inner acanthus, and an L-shaped cavity is formed between the outer acanthus and the inner acanthus. A first reinforcement cage is arranged at the position, corresponding to a connecting seam of the two superimposed shear walls, in the cavity, a second reinforcement cage is arranged at the end, close to the seam, of the first reinforcement cage, and a full-length vertical L-shaped water stop steel plate is arranged on the outer side of the vertical connecting position of the first reinforcement cage and the second reinforcement cage. When the laminated shear wall is used as a basement outer wall for construction, the structure is better in integrity and has the characteristic of preventing water leakage, and the purpose of no weak link in construction is achieved.

Description

Technical Field

[0001] The utility model relates to the field of composite shear walls of prefabricated buildings, in particular to an L-shaped basement composite shear wall waterproof connection node structure. Background Art

[0002] When the composite shear wall is used on the outer wall of the basement, the vertical joints are directly spliced, and a steel cage is set in the middle cast-in-place concrete section, and the vertical full-length arrangement is used to realize the role of the hoop, but its vertical joints as hard splicing are the weak link of the waterproofing of the entire basement outer wall. Chinese patent document CN212336509U A double-sided leaf plate combined composite shear wall suitable for the outer wall of the basement records a double-sided leaf plate combined composite shear wall suitable for the outer wall of the basement, mainly including an A-side leaf plate, a B-side leaf plate, a pair of perforated steel plates with the same structure, and a pair of steel meshes with the same structure, the A-side leaf plate and the B-side leaf plate are arranged oppositely, the pair of perforated steel plates are respectively installed on the opposite surfaces of the A-side leaf plate and the B-side leaf plate, the pair of steel meshes are respectively embedded in the A-side leaf plate and the B-side leaf plate, and the pair of steel meshes and the pair of perforated steel plates are respectively connected by a plurality of welding nails. This patent only considers the strength of the composite shear wall itself, but does not consider the water-stopping scheme between the composite shear walls, and fails to achieve the effect of preventing water seepage and leakage of the composite shear wall in the basement. Utility Model Content

[0003] The main purpose of the utility model is to provide an L-shaped basement composite shear wall waterproof connection node structure to solve the problem of water seepage and leakage at the "L"-shaped connection joint when the composite shear wall is used as the basement outer wall.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an L-shaped basement composite shear wall waterproof connection node structure, including two composite shear walls with side butt joints to form an "L"-shaped connection structure, each composite shear wall includes an outer blade and an inner blade, and an "L"-shaped cavity is formed between the outer blade and the inner blade, and a first steel cage is provided at a position corresponding to the connection joint of the two composite shear walls in the cavity, a second steel cage is provided at one end of the first steel cage close to the joint, and a full-length vertical "L"-shaped water-stop steel plate is provided on the outer side of the vertical connection between the first steel cage and the second steel cage.

[0005] In a preferred solution, the first steel cage and the second steel cage are respectively located inside the cavities of the two superimposed shear walls, and the connecting end of the first steel cage is overlapped and connected with the connecting end of the second steel cage.

[0006] In a preferred solution, the first steel cage and the second steel cage respectively include a plurality of longitudinal steel bars, and the longitudinal steel bars are connected by a plurality of horizontal stirrups.

[0007] In a preferred solution, the horizontal stirrups overlap each other at the location where the first reinforcement cage is connected to the second reinforcement cage.

[0008] In a preferred solution, the first steel cage and the second steel cage are respectively provided with a limit block, which is circular and sleeved on the longitudinal steel bars or the horizontal stirrups.

[0009] In a preferred solution, a plurality of steel bar trusses are provided in the cavity, one end of the steel bar trusses is connected to the embedded steel bars provided in the outer blade, and the other end is connected to the embedded steel bars provided in the inner blade.

[0010] In a preferred solution, micro-expansive cement is provided in respective connecting seams of the outer blade plate and the inner blade plate.

[0011] In a preferred solution, the vertical edge of the water-stop steel plate is folded outward so that the edge of the water-stop steel plate is close to the inner wall of the outer blade plate.

[0012] In a preferred solution, the waterstop steel plate is connected to the horizontal stirrups through a swinging member, so that after the first steel cage and the second steel cage are installed, the waterstop steel plate is pressed against the outer blade under the action of gravity and forms a seal on the connection joint.

[0013] In a preferred solution, a circular ring is provided at one end of the swinging member, and the circular ring is rotatably sleeved on the horizontal stirrup, and the other end of the swinging member is welded to the water-stop steel plate.

[0014] The utility model provides an L-shaped basement composite shear wall waterproof connection node structure, including two composite shear walls that are butted together at the sides to form an "L"-shaped connection structure, each composite shear wall comprising an outer blade and an inner blade, an "L"-shaped cavity is formed between the outer blade and the inner blade, a first steel cage is arranged at a position corresponding to a connection seam between the two composite shear walls in the cavity, a second steel cage is arranged at one end of the first steel cage close to the seam to achieve a mold hoop effect, a full-length vertical "L"-shaped water-stopping steel plate is arranged on the outer side of a vertical connection between the first steel cage and the second steel cage, concrete is poured inside the middle cavity, the two composite shear walls are connected to form a stable overall structure, the effect of preventing water seepage and leakage is achieved, the waterproofing and cracking caused by the composite shear walls being directly connected to the vertical seams is reduced, and the purpose of having no weak links when the composite shear walls are used for construction in the basement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a top view of the structure of the utility model;

[0017] Figure 2 It is the AA sectional view of the utility model;

[0018] Figure 3It is a partially enlarged view of the utility model;

[0019] In the figure: composite shear wall 1; outer blade 101; inner blade 102; cavity 103; joint 104; first steel cage 2; second steel cage 3; longitudinal steel bars 4; horizontal stirrups 5; water stop steel plate 6; embedded steel bars 7; steel truss 8; swing member 9; limit block 10. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] like Figure 1-3 As shown, an L-shaped basement composite shear wall waterproof connection node structure includes two composite shear walls 1 with their sides butted together to form an "L"-shaped connection structure, each composite shear wall 1 includes an outer blade 101 and an inner blade 102, an "L"-shaped cavity 103 is formed between the outer blade 101 and the inner blade 102, a first steel cage 2 is provided at a position in the cavity 103 corresponding to a connection joint 104 between the two composite shear walls 1, a second steel cage 3 is provided at one end of the first steel cage 2 close to the joint 104, and a full-length vertical "L"-shaped water-stop steel plate 6 is provided on the outer side of the vertical connection between the first steel cage 2 and the second steel cage 3. According to this structure, when the composite shear wall 1 is used for the outer wall of the basement, the outer blades 101 of the two composite shear walls 1 are longer than the inner blades 102, and the side end surfaces of the outer blades 101 and the inner blades 102 are respectively butted to form an "L"-shaped composite shear wall 1, and an "L"-shaped cavity 103 is formed inside. The connection between the two outer blades 101 and the two inner blades 102 forms a joint 104, and the position corresponding to the joint 104 in the cavity 103 is arranged with a first steel cage 2 in the horizontal direction. A second steel cage 3 is connected to the position of the reinforcement cage 2 near the joint 104 to achieve a hoop effect. A full-length vertical "L"-shaped water-stop steel plate 6 is arranged on the outside of the vertical connection between the first steel cage 2 and the second steel cage 3 and in the direction of the joint 104 connecting the outer blade 101. Concrete is then poured into the cavity 103 to connect the two composite shear walls 1 into an integral structure, thereby achieving the effect of preventing water seepage and leakage and reducing waterproofing and cracking caused by the direct connection of the composite shear wall 1 to the vertical seam.

[0022] In the preferred embodiment, the first steel cage 2 and the second steel cage 3 are respectively located inside the cavities 103 of the two superimposed shear walls 1, and the connection end of the first steel cage 2 overlaps and connects with the connection end of the second steel cage 3. With this structure, the first steel cage 2 is located inside the horizontal cavity 103, and the second steel cage 3 is located inside the vertical cavity 103, and they extend from the cavity 103 to the connection corners of the two superimposed shear walls 1, respectively, and the connection end at the corner of the first steel cage 2 partially overlaps with the connection end at the corner of the second steel cage 3, and the overlapping parts of the first steel cage 2 and the second steel cage 3 are connected by welding or binding.

[0023] In the preferred embodiment, the first steel cage 2 and the second steel cage 3 respectively include a plurality of longitudinal steel bars 4, and the longitudinal steel bars 4 are connected by a plurality of horizontal stirrups 5. With this structure, the longitudinal steel bars 4 and the horizontal stirrups 5 form a connecting member.

[0024] In the preferred embodiment, the horizontal stirrups 5 overlap each other at the connection position between the first reinforcement cage 2 and the second reinforcement cage 3. With this structure, the first reinforcement cage 2 and the second reinforcement cage 3 form an "L"-shaped connection structure, and the two composite shear walls 1 are connected by pouring concrete in the cavity 103.

[0025] In the preferred embodiment, the first steel cage 2 and the second steel cage 3 are respectively provided with a limit block 10, which is circular and sleeved on the longitudinal steel bars 4 or the horizontal stirrups 5. With this structure, the limit block 10 sleeved on the longitudinal steel bars 4 or the horizontal stirrups 5 is used to limit the position distance between the first steel cage 2 and the second steel cage 3 in the cavity 103 and the outer blade 101 and the inner blade 102.

[0026] In the preferred embodiment, a plurality of steel bar trusses 8 are provided in the cavity 103, one end of the steel bar trusses 8 is connected to the embedded steel bars 7 provided in the outer blade 101, and the other end is connected to the embedded steel bars 7 provided in the inner blade 102. With this structure, the embedded steel bars 7 in the outer blade 101 and the inner blade 102 are connected by a plurality of V-shaped steel bar trusses 8, and the outer blade 101 and the inner blade 102 are formed into a single integral composite shear wall 1, thereby enhancing the rigidity of the prefabricated components and avoiding large deformation and cracking during transportation or installation.

[0027] In the preferred embodiment, the outer blade 101 and the inner blade 102 are provided with micro-expansion cement in their respective connection joints 104. With this structure, the micro-expansion cement is poured inside the joint 104, so that the cement expands to a certain extent during hydration due to the action of the expansion agent, thereby compensating for the shrinkage of the cement and achieving the purpose of preventing and controlling cement cracks.

[0028] The preferred solution is Figure 3 In the embodiment, the vertical edge of the water-stop steel plate 6 is folded outwards so that the edge of the water-stop steel plate 6 is close to the inner wall of the outer blade 101. With this structure, the groove surface formed by the water-stop steel plate 6 faces the outer blade 101, that is, faces the water-facing surface. When subjected to the pressure of the filling concrete, the vertical edge of the water-stop steel plate 6 and the inner wall of the outer blade 101 form a water-blocking sealing structure to prevent water from penetrating from one side to the other side, thereby achieving a better waterproof and water-stopping effect.

[0029] The preferred solution is Figure 2In the embodiment, the water-stop steel plate 6 is connected to the horizontal stirrup 5 through the swinging member 9, so that after the first steel cage 2 and the second steel cage 3 are installed, the water-stop steel plate 6 is pressed against the outer blade 101 under the action of gravity, and the connection joint 104 is sealed. A circular ring is provided at one end of the swinging member 9, and the circular ring can be rotatably sleeved on the horizontal stirrup 5. There is a sufficient gap between the circular ring and the horizontal stirrup 5 to compensate for the rotation interference. The other end of the swinging member 9 is welded and connected to the water-stop steel plate 6. With this structure, in the initial state, the first steel cage 2 and the second steel cage 3 are respectively tied to the water-stop steel plate 6. After the first steel cage 2 and the second steel cage 3 are hoisted, the tying steel wire is loosened, and the water-stop steel plate 6 is pressed against the connection joint 104 of the outer blade 101 under the action of gravity. After the subsequent pouring of concrete, the gravity of the concrete will firmly press the water-stop steel plate 6 at the position of the joint 104 connected to the outer blade 101, so as to achieve the water-stop effect. When tying the horizontal stirrups 5 , the swinging piece 9 is put on the horizontal stirrups 5 .

[0030] Embodiment 2:

[0031] Further illustrate with reference to Example 1, Figure 1-3 In the structure shown, the preferred embodiment of the present invention adopts a composite shear wall 1 with a thickness of 350 mm, that is, the distance between the outer side of the outer blade 101 and the outer side of the inner blade 102 is 350 mm, wherein the distance between the joints 104 of the outer blade 101 and the inner blade 102 is 20 mm; the diameter of the horizontal stirrup 5 is 10 mm, the arrangement center distance is 200 mm, the diameter of the longitudinal reinforcement 4 is 12 mm; the water stop steel plate 6 is 300 mm × 1.2 mm, and is at the same height as the wall. The construction process is: laying out and positioning; arranging the first reinforcement cage 2 and the second reinforcement cage 3, and effectively overlapping with the bottom reserved reinforcement; arranging two vertical water stop steel plates 6, spot welding and overlapping with the first reinforcement cage 2 and the second reinforcement cage 3 respectively; hoisting the outer blade 101 and the inner blade 102 of the composite shear wall 1; processing the joint 104; pouring concrete in the cavity 103 to connect the two composite shear walls 1 into a whole.

[0032] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An L-shaped basement composite shear wall waterproof connection node structure, characterized by: The invention comprises two superimposed shear walls (1) whose sides are butted together to form an "L"-shaped connection structure. Each superimposed shear wall (1) comprises an outer blade plate (101) and an inner blade plate (102). An "L"-shaped cavity (103) is formed between the outer blade plate (101) and the inner blade plate (102). A first steel cage (2) is provided at a position corresponding to a connection joint (104) between the two superimposed shear walls (1) in the cavity (103). A second steel cage (3) is provided at one end of the first steel cage (2) close to the joint (104). A full-length vertical "L"-shaped water-stop steel plate (6) is provided on the outer side of the vertical connection between the first steel cage (2) and the second steel cage (3).

2. According to claim 1, an L-shaped basement composite shear wall waterproof connection node structure is characterized by: The first steel cage (2) and the second steel cage (3) are respectively located inside the cavities (103) of the two superimposed shear walls (1), and the connection end of the first steel cage (2) is overlapped and connected with the connection end of the second steel cage (3).

3. According to claim 1, the waterproof connection node structure of an L-shaped basement composite shear wall is characterized by: The first steel cage (2) and the second steel cage (3) respectively comprise a plurality of longitudinal steel bars (4), and the longitudinal steel bars (4) are connected by a plurality of horizontal stirrups (5).

4. According to claim 3, the waterproof connection node structure of an L-shaped basement composite shear wall is characterized by: The horizontal stirrups (5) overlap each other at the location where the first reinforcement cage (2) and the second reinforcement cage (3) are connected.

5. According to claim 3, the waterproof connection node structure of an L-shaped basement composite shear wall is characterized by: The first steel cage (2) and the second steel cage (3) are respectively provided with a limit block (10), the limit block (10) is circular and sleeved on the longitudinal steel bars (4) or the horizontal stirrups (5).

6. According to claim 1, the waterproof connection node structure of an L-shaped basement composite shear wall is characterized by: A plurality of steel bar trusses (8) are arranged in the cavity (103), one end of the steel bar trusses (8) is connected to the embedded steel bars (7) arranged in the outer blade (101), and the other end is connected to the embedded steel bars (7) arranged in the inner blade (102).

7. The L-shaped basement composite shear wall waterproof connection node structure according to claim 1 is characterized by: The outer blade plate (101) and the inner blade plate (102) are provided with micro-expansive cement in their respective connection joints (104).

8. The L-shaped basement composite shear wall waterproof connection node structure according to claim 1 is characterized by: The vertical edge of the water-stop steel plate (6) is folded outwards so that the edge of the water-stop steel plate (6) is closely attached to the inner wall of the outer blade plate (101).

9. The L-shaped basement composite shear wall waterproof connection node structure according to any one of claims 1 to 8, characterized in that: The water-stop steel plate (6) is connected to the horizontal stirrup (5) via a swinging member (9), so that after the first steel cage (2) and the second steel cage (3) are installed, the water-stop steel plate (6) is closely attached to the outer blade (101) under the action of gravity and forms a seal on the connecting joint (104).

10. The waterproof connection node structure of an L-shaped basement composite shear wall according to claim 9 is characterized by: One end of the swing member (9) is provided with a circular ring, which is rotatably sleeved on the horizontal stirrup (5), and the other end of the swing member (9) is welded to the water-stop steel plate (6).

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