Waterproof connection node structure of the superimposed shear wall in the I-shaped basement

Abstract

The utility model relates to the field of composite shear walls of prefabricated buildings, specifically a waterproof connection node structure of a composite shear wall in a straight line in a basement, including two composite shear walls butted sideways, each composite shear wall comprising an outer blade and an inner blade, a straight-line cavity is formed between the outer blade and the inner blade, a steel cage is provided at a position corresponding to the connection seam between the two composite shear walls in the cavity, and a full-length vertical water-stop steel plate is provided at a position corresponding to the seam facing outwards of the steel cage. When the composite shear wall is used as the outer wall of the basement for construction, the structure has the characteristics of better structural integrity and water seepage and leakage prevention, thereby achieving the purpose of having no weak links in the construction.

Description

Technical Field

[0001] The utility model relates to the field of composite shear walls of assembled buildings, in particular to a waterproof connection node structure of a straight-line composite shear wall of a basement. Background Art

[0002] The use of composite shear walls on the exterior walls of basements can significantly shorten the construction period, reduce the difficulty of construction, reduce the amount of earth excavation and the turnover materials required for construction, and at the same time reduce on-site wet work and labor, and improve the quality of the project. The traditional cast-in-place exterior wall technology of basements adopts integral cast-in-place, no vertical seams, and the bottom horizontal seams use full-length water-stop steel plates to achieve waterproofing. When the composite shear wall is used on the exterior wall of the basement, the vertical joints are directly spliced, and a steel cage is set in the concrete of the middle cast-in-place section, which is arranged vertically throughout to achieve the role of a hoop, but its vertical joints as hard splicing are the weak link in the waterproofing of the entire basement exterior wall. Chinese patent document CN111519829A discloses a single-sided leaf plate composite shear wall suitable for basement exterior walls and its processing technology, which records a single-sided leaf plate composite shear wall suitable for basement exterior walls, including precast concrete A-side leaf plate, connecting rods and B-side perforated steel plate, one end of the connecting rod is connected to the precast concrete A-side leaf plate, and the other end of the connecting rod is connected to the B-side perforated steel plate, the precast concrete A-side leaf plate is composed of the A-side perforated steel plate, welding nails, steel mesh, embedded sleeves and leaf plate concrete, the B-side perforated steel plate and the precast concrete A-side leaf plate are assembled and combined by connecting rods to form a frame body of the composite composite shear wall, the B-side perforated steel plate can be connected to steel structure components, such as beams and plates, by dry connection, or the precast concrete A-side leaf plate can be connected to concrete components by steel bar overlap. The invention only considers the strength of the composite shear wall, but does not consider the water-stopping scheme between the composite shear walls. Similarly, CN212336509U discloses a double-sided leaf plate composite shear wall suitable for the exterior wall of a basement, which only considers the strength of the composite shear wall itself, but does not give sufficient consideration to the water-stopping effect that needs to be considered in the basement. Utility Model Content

[0003] The main purpose of the utility model is to provide a waterproof connection node structure of a straight-line basement composite shear wall to solve the problem of water seepage and leakage at the connection joints when the composite shear wall is used as the basement outer wall.

[0004] In order to solve the above technical problems, the utility model provides a I-shaped basement composite shear wall waterproof connection node structure, including two composite shear walls butted sideways, each composite shear wall comprising an outer blade plate and an inner blade plate, a I-shaped cavity is formed between the outer blade plate and the inner blade plate, a steel cage is provided at a position corresponding to the connection joint of the two composite shear walls in the cavity, and a full-length vertical water-stop steel plate is provided at a position corresponding to the joint facing outwards of the steel cage.

[0005] Furthermore, the steel cage includes a plurality of longitudinal steel bars, and the longitudinal steel bars are connected by a plurality of horizontal steel bars.

[0006] Furthermore, a steel truss is provided in the cavity, one end of the steel truss is connected to the outer blade plate, and the other end of the steel truss is connected to the inner blade plate.

[0007] Furthermore, micro-expansive cement is provided in respective joints of the outer blade plate and the inner blade plate of the composite shear wall.

[0008] Furthermore, the vertical center of the waterstop steel plate is aligned with the center of the joint.

[0009] Furthermore, the water-stop steel plate is provided with a vertically arranged groove, and the groove faces one side of the outer blade.

[0010] Furthermore, the water-stop steel plate is connected to the horizontal steel bar through a swinging piece so that after the steel cage is installed, the water-stop steel plate is close to the joint.

[0011] Furthermore, a circular ring is provided at one end of the swinging member, and the circular ring is rotatably sleeved on the horizontal steel bar, and the other end of the swinging member is welded to the water-stopping steel plate.

[0012] Further, in the initial state, the water stop steel plate is tied together with the steel cage;

[0013] After hoisting the steel cage, loosen the binding wire, and the waterstop steel plate will stick to the joint under the action of gravity. After the subsequent pouring of concrete, the gravity of the concrete will firmly press the waterstop steel plate at the joint.

[0014] Furthermore, a limit block is provided on the steel cage. The limit block is circular and sleeved on the longitudinal steel bars or the horizontal steel bars to limit the distance between the outer blade plate, the inner blade plate and the steel cage.

[0015] The utility model provides a waterproof connection node structure of a straight-line basement composite shear wall, comprising two composite shear walls butted sideways, each composite shear wall comprising an outer blade plate and an inner blade plate, a straight-line cavity formed between the outer blade plate and the inner blade plate, a steel cage is arranged at a position in the cavity corresponding to a connection joint between the two composite shear walls, a full-length vertical water-stop steel plate is arranged at a position of the steel cage corresponding to the joint facing outward, and concrete is poured into the cavity to connect the two composite shear walls into a whole, which has the characteristics of better structural integrity and more reliable water seepage and leakage prevention, so as to achieve the purpose of having no weak links when the composite shear wall is used for construction of the basement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1It is a top view of the I-shaped waterproof connection node structure of the superimposed shear wall of the basement of the utility model;

[0018] Figure 2 It is a cross-sectional view in the AA direction of the I-shaped basement composite shear wall waterproof connection node structure of the utility model;

[0019] In the figure: 1-composite shear wall; 101-outer blade; 102-inner blade; 103-cavity; 104-joint; 2-reinforcement cage; 3-reinforcement truss; 4-longitudinal reinforcement; 5-horizontal reinforcement; 6-waterstop steel plate; 7-swinging member; 8-limiting block. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] like Figure 1-2 As shown, a waterproof connection node structure of a I-shaped basement composite shear wall includes two composite shear walls 1 butted sideways, each composite shear wall 1 includes an outer blade 101 and an inner blade 102, a I-shaped cavity 103 is formed between the outer blade 101 and the inner blade 102, a steel cage 2 is provided at a position corresponding to a connection joint 104 between the two composite shear walls 1 in the cavity 103, and a full-length vertical water-stop steel plate 6 is provided at a position corresponding to the joint 104 facing outwards of the steel cage 2. With this structure, when the outer wall of the basement adopts the composite shear wall 1, the side end faces of the outer blade 101 and the inner blade 102 of the two composite shear walls 1 are connected respectively, and vertical joints 104 are formed at the connection points. A straight-line cavity 103 is formed inside between the outer blade 101 and the inner blade 102, and a steel cage 2 is arranged at a position corresponding to the joint 104 in the cavity 103 to achieve a hoop effect. A full-length vertical water-stop steel plate 6 is arranged on the outer side of the steel cage 2 close to the outer blade 101 and corresponding to the joint 104, and then concrete is poured into the cavity 103 to connect the two composite shear walls 1 into a whole, so as to achieve the effect of preventing water seepage and leakage, and reduce the waterproofing and cracking caused by the direct connection of the composite shear wall 1 to the vertical joint.

[0022] In the preferred embodiment, the steel cage 2 includes a plurality of longitudinal steel bars 4, and the longitudinal steel bars 4 are connected by a plurality of horizontal steel bars 5. With this structure, the horizontal steel bars 5 and the longitudinal steel bars 4 form a closed steel cage 2, and the two composite shear walls 1 are connected by the steel cage 2 disposed in the cavity 103 and cast-in-place concrete.

[0023] In the preferred embodiment, a steel truss 3 is provided in the cavity 103, one end of the steel truss 3 is connected to the outer blade 101, and the other end is connected to the inner blade 102. With this structure, the outer blade 101 and the inner blade 102 are connected by the steel truss 3 to form a composite shear wall 1.

[0024] In the preferred embodiment, the outer blade 101 and the inner blade 102 of the composite shear wall 1 are provided with micro-expansion cement in their respective 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.

[0025] In the preferred embodiment, the vertical center of the water stop steel plate 6 is aligned with the center of the joint 104. With this structure, the water stop steel plate 6 is aligned with the center of the joint 104, maintaining a bilaterally symmetrical structure along the same vertical axis.

[0026] In the preferred embodiment, the water-stop steel plate 6 is provided with a vertically arranged groove, which faces one side of the outer blade 101. With this structure, the groove surface of the water-stop steel plate 6 faces the outer blade 101, that is, the water-facing surface, preventing water from penetrating from one side to the other side, so as to achieve a better waterproof effect.

[0027] In the preferred embodiment, the water-stop steel plate 6 is connected to the horizontal steel bar 5 through the swinging member 7, so that after the steel bar cage 2 is installed, the water-stop steel plate 6 is close to the joint 104. One end of the swinging member 7 is provided with a ring, which can be rotatably sleeved on the horizontal steel bar 5, and the other end of the swinging member 7 is welded and connected to the water-stop steel plate 6. In the initial state, the water-stop steel plate 6 is tied together with the steel bar cage 2. After the steel bar cage 2 is hoisted, the binding wire is loosened, and the water-stop steel plate 6 is close to the joint 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 joint to achieve a water-stopping effect. When tying the horizontal steel bar 5, the swinging member 7 is sleeved on the horizontal steel bar 5.

[0028] In the preferred embodiment, a limit block 8 is further provided on the steel cage 2. The limit block 8 is circular and is sleeved on the longitudinal steel bars 4 or the horizontal steel bars 5 to limit the distance between the outer blade 101 and the inner blade 102 and the steel cage 2. With this structure, the limit block 8 sleeved on the longitudinal steel bars 4 or the horizontal steel bars 5 is used to limit the position distance of the steel cage 2 between the outer blade 101 and the inner blade 102.

[0029] Embodiment 2:

[0030] Further illustrate with reference to Example 1, Figure 1-2In the structure shown, the preferred embodiment adopts a composite shear wall 1 with a thickness of 350mm, that is, the distance between the outer side of the outer blade 101 and the outer side of the inner blade 102 is 350mm, wherein the distance between the joints 104 of the outer blade 101 and the inner blade 102 is 20mm; the diameter of the horizontal steel bar 5 is 10mm, the arrangement center distance is 200mm, the diameter of the longitudinal steel bar 4 is 12mm; the water stop steel plate 6 is 300mm×1.2mm, and is at the same height as the wall. The construction process is: laying out and positioning; arranging the steel cage 2 and the longitudinal steel bars 4, and effectively overlapping with the reserved steel bars at the bottom; arranging the vertical water stop steel plate 6, and spot welding and overlapping with the steel cage 2; 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.

[0031] 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. The waterproof connection node structure of the I-shaped basement composite shear wall is characterized by: The invention comprises two superimposed shear walls (1) butted against each other at the side, each superimposed shear wall (1) comprising an outer blade plate (101) and an inner blade plate (102), a straight-line cavity (103) being formed between the outer blade plate (101) and the inner blade plate (102), a steel cage (2) being provided at a position corresponding to a joint (104) connecting the two superimposed shear walls (1) in the cavity (103), and a full-length vertical water-stop steel plate (6) being provided at a position corresponding to the joint (104) facing outwards of the steel cage (2).

2. According to claim 1, the waterproof connection node structure of the I-shaped basement composite shear wall is characterized in that: The steel cage (2) comprises a plurality of longitudinal steel bars (4), and the longitudinal steel bars (4) are connected by a plurality of horizontal steel bars (5).

3. The waterproof connection node structure of the I-shaped basement composite shear wall according to claim 1 is characterized in that: A steel truss (3) is arranged in the cavity (103), one end of the steel truss (3) is connected to the outer blade (101), and the other end is connected to the inner blade (102).

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

5. The waterproof connection node structure of the I-shaped basement composite shear wall according to claim 1 is characterized in that: The vertical center of the water-stop steel plate (6) is aligned with the center of the joint (104).

6. The waterproof connection node structure of the I-shaped basement composite shear wall according to claim 1 is characterized in that: The water-stop steel plate (6) is provided with a vertically arranged groove, and the groove faces one side of the outer blade plate (101).

7. The waterproof connection node structure of the straight basement composite shear wall according to claim 1 or 6, characterized in that: The water-stop steel plate (6) is connected to the horizontal steel bar (5) through a swinging member (7), so that after the steel bar cage (2) is installed, the water-stop steel plate (6) is closely attached to the joint (104).

8. The waterproof connection node structure of the I-shaped basement composite shear wall according to claim 7 is characterized in that: One end of the swing member (7) is provided with a circular ring, which is rotatably sleeved on the horizontal steel bar (5), and the other end of the swing member (7) is welded to the water stop steel plate (6).

9. The waterproof connection node structure of the I-shaped basement composite shear wall according to claim 8 is characterized in that: In the initial state, the water stop steel plate (6) and the steel cage (2) are tied together; After the steel cage (2) is hoisted, the binding wire is loosened, and the water-stop steel plate (6) is pressed against the joint 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) against the joint.

10. The waterproof connection node structure of the straight-line basement composite shear wall according to claim 1 is characterized in that: A limit block (8) is also provided on the steel cage (2). The limit block (8) is circular and sleeved on the longitudinal steel bars (4) or the horizontal steel bars (5) to limit the distance between the outer blade plate (101) and the inner blade plate (102) and the steel cage (2).

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