Shear wall of multi-story assembled house and construction method thereof

Abstract

A shear wall of a multi-storey assembled house and a construction method thereof, comprising a wall body vertically arranged in the left and right directions, the wall body comprising a plurality of double P plates, and two adjacent double P plates being arranged flush and butted, the two adjacent double P plates comprising a left double P plate and a right double P plate, an inner gap cavity being arranged between the precast concrete plate inside the left double P plate and the precast concrete plate inside the right double P plate, an outer gap cavity being arranged between the precast concrete plate outside the left double P plate and the precast concrete plate outside the right double P plate, a connecting frame being arranged inside the outer gap cavity, the width of the outer gap cavity being 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate, and the width of the inner gap cavity being 0.27 to 0.36 times the thickness of the precast concrete plate on one side of the left double P plate. The present invention can connect two adjacent double P plates closely together to construct a long shear wall of a multi-storey assembled house.

Description

Technical Field

[0001] The invention relates to a shear wall of a multi-story assembled house and a construction method thereof. Background Art

[0002] In the construction of traditional multi-storey houses, the entire wall of the shear wall is mostly made by weaving steel bars, supporting formwork, pouring concrete, and removing formwork on site. This method requires weaving more steel mesh and supporting and removing more formwork on site, which not only slows down the construction speed, but also generates more construction waste and noise pollution during the construction process. In the current construction of multi-storey houses, it is often necessary to build longer walls. In reality, there are examples of using double P boards to manufacture assembled house walls. For example, Chinese patent CN207314651U discloses a double P board, including precast concrete boards, the precast concrete The slabs are arranged in two pieces with the same size and thickness, a hollow part is formed between the two precast concrete slabs, longitudinal reinforcement and transverse reinforcement are arranged inside the precast concrete slabs, the two precast concrete slabs are connected by V-shaped connecting reinforcements, hooks are arranged at both ends of the V-shaped connecting reinforcements, the "V-shaped" elbow of the V-shaped connecting reinforcement is connected to the longitudinal reinforcement of the precast concrete slab on one side, and the hook of the V-shaped connecting reinforcement is connected to the longitudinal reinforcement of the precast concrete slab on the other side. This method of using double P slabs to manufacture walls cannot build longer walls, and how to tightly connect two adjacent double P slabs together is an urgent problem to be solved. Summary of the invention

[0003] In order to solve the problem that two adjacent double P boards cannot be tightly connected together to build a longer wall in the construction of existing multi-story houses, the present invention provides a shear wall of a multi-story assembled house and a construction method thereof.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A shear wall of a multi-storey assembled house comprises a wall body vertically arranged in a left-right direction, the wall body comprises a plurality of double P plates, and two adjacent double P plates are arranged flush and butt-jointed, the two adjacent double P plates comprise a left double P plate and a right double P plate, an inner gap cavity is arranged between a precast concrete plate inside the left double P plate and a precast concrete plate inside the right double P plate, an outer gap cavity is arranged between a precast concrete plate outside the left double P plate and a precast concrete plate outside the right double P plate, a connecting frame is arranged inside the outer gap cavity, a width of the outer gap cavity is 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate, and a width of the inner gap cavity is 0.27 to 0.36 times the thickness of the precast concrete plate on one side of the left double P plate.

[0006] Furthermore, the width of the connecting frame is 2.5 to 2.8 times the thickness of the precast concrete slab on one side of the left double P slab.

[0007] Furthermore, the width of the outer gap cavity is 180-240 mm, and the width of the inner gap cavity is 16.2-21.6 mm.

[0008] Furthermore, the width of the outer gap cavity is 180 mm, and the width of the inner gap cavity is 20 mm.

[0009] Furthermore, the transverse ribs of the left double P plate extend to the inside of the outer gap cavity and are bound and connected to the connecting frame, and the transverse ribs of the right double P plate extend to the inside of the outer gap cavity and are bound and connected to the connecting frame.

[0010] Furthermore, the connection frame includes a rectangular frame distributed along a plurality of vertical parallel intervals and four vertically arranged steel bars, the four steel bars are distributed in a rectangular shape, and the plurality of frames are fixedly connected by the four steel bars.

[0011] Furthermore, the left end face of the connecting frame is located on the left side of the inner gap cavity, the right end face of the connecting frame is located on the right side of the inner gap cavity, the inner side face of the connecting frame is located on the inner side of the symmetry plane of the two inner and outer precast concrete panels of the left double P panel and the distance from the inner gap cavity is greater than 3 mm, and the outer side face of the connecting frame is located on the inner side of the precast concrete panel outside the left double P panel.

[0012] Furthermore, the connection frame and the outer gap cavity are both symmetrically arranged with respect to the inner gap cavity.

[0013] A construction method for the shear wall of the multi-storey assembled house comprises the following steps:

[0014] A. Prefabricate multiple double P boards and prepare the connection frame;

[0015] B. Hoist multiple double P boards and make sure that two adjacent double P boards are aligned and connected;

[0016] C. Place the connection frame into the outer gap cavity, and adjust the distance between two adjacent double P plates so that the width of the outer gap cavity is 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate, and the width of the inner gap cavity is 0.27 to 0.36 times the thickness of the precast concrete plate on one side of the left double P plate;

[0017] D. Support the upper formwork on the inner side of the inner gap cavity and the outer side of the outer gap cavity, and then pour concrete into the hollow part of the double P plate, the inner gap cavity of two adjacent double P plates, and the outer gap cavity of two adjacent double P plates;

[0018] E. After the concrete poured in the previous step solidifies, remove the formwork.

[0019] Furthermore, step C also includes binding and connecting the transverse reinforcements of two adjacent double P plates to the connecting frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: when building a longer wall, it is only necessary to prefabricate multiple double P plates in advance, and to butt two adjacent double P plates flush, the width of the outer gap cavity is 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate, and the width of the inner gap cavity is 0.27 to 0.36 times the thickness of the precast concrete plate on one side of the left double P plate. The different widths of the outer gap cavity and the inner gap cavity can make the ends of the left double P plate and the right double P plate staggered, thereby increasing the subsequent connection strength. In order to further ensure the strength of the connection part, the width of the inner gap cavity should be as small as possible. At the same time, considering the shrinkage of the concrete after solidification, a certain width should be reserved for the inner gap cavity to prevent the precast concrete plates of the adjacent two double P plates from being squeezed and deformed by force after the concrete solidifies, thereby affecting the tightness of the connection. Then, after the connection frame is placed in the outer gap cavity, the formwork is supported, and concrete is poured, the adjacent two double P plates can be tightly connected together, thereby building a longer wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 for Figure 1 A partial enlarged view of the connection between two adjacent double P boards at position A in the middle;

[0023] Figure 3 It is a structural schematic diagram of the connection frame described in the present invention.

[0024] In the figure: 10, wall, 1001, left double P plate, 1002, right double P plate, 1003, connecting frame, 10031, frame, 10032, steel bar, 1004, outer gap cavity, 1005, inner gap cavity. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] like Figure 1 , Figure 2 and Figure 3As shown, the present invention provides a shear wall of a multi-story assembled house, comprising a wall body 1 vertically arranged along the left and right directions, the wall body 1 comprising a plurality of double P plates, and two adjacent double P plates are arranged flush and butt-jointed, the two adjacent double P plates comprising a left double P plate 1001 and a right double P plate 1002, an inner gap cavity 1005 is arranged between the precast concrete plate inside the left double P plate 1001 and the precast concrete plate inside the right double P plate 1002, an outer gap cavity 1004 is arranged between the precast concrete plate outside the left double P plate 1001 and the precast concrete plate outside the right double P plate 1002, a connecting frame 1003 is arranged inside the outer gap cavity 1004, a width of the outer gap cavity 1004 is 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate 1001, and a width of the inner gap cavity 1005 is 0.27 to 0.36 times the thickness of the precast concrete plate on one side of the left double P plate 1001.

[0028] In this embodiment, when building a long wall, it is only necessary to prefabricate multiple double P plates in advance, and align two adjacent double P plates to ensure that the width of the outer gap cavity 1004 is 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate 1001, and the width of the inner gap cavity 1005 is 0.27 to 0.36 times the thickness of the precast concrete plate on one side of the left double P plate 1001. The different widths of the outer gap cavity 1004 and the inner gap cavity 1005 can make the end planes of the left double P plate 1001 and the right double P plate 1002 staggered, increasing the subsequent connection In order to further ensure the strength of the connection, the width of the inner gap cavity 1005 should be as small as possible. Considering the shrinkage of the concrete after solidification, a certain width should be reserved for the inner gap cavity 1005 to prevent the ends of the precast concrete slabs of the two adjacent double P slabs from being squeezed and deformed after the concrete solidifies, thereby affecting the tightness of the connection. Then, after the connection frame 1003 is placed in the outer gap cavity 1004, the formwork is supported and concrete is poured, so that the two adjacent double P slabs can be tightly connected together, thereby building a longer wall.

[0029] Furthermore, the width of the connection frame 1003 is 2.5 to 2.8 times the thickness of the precast concrete slab on one side of the left double P slab 1001, which can ensure that the connection frame 1003 can have a good stretching effect on the concrete poured in the connection part of the adjacent double P slabs.

[0030] Specifically, taking into account the shrinkage of concrete and ensuring that concrete can smoothly enter the inner gap cavity 1005 while ensuring that the gap is not too large to affect the connection strength, the width of the outer gap cavity 1004 is 180~240mm, and the width of the inner gap cavity 1005 is 16.2~21.6mm.

[0031] Preferably, the width of the outer gap cavity 1004 is 180 mm, and the width of the inner gap cavity 1005 is 20 mm, which can better prevent the ends of the precast concrete slabs of the two adjacent double P slabs from being squeezed and deformed after the concrete solidifies, thereby ensuring the tightness of the connection, and the concrete can smoothly enter the inner gap cavity 1005, and can also ensure that the gap is not too large to affect the connection strength.

[0032] In order to further increase the connection strength of the connection parts of the two adjacent double P plates in the left and right and vertical directions, the transverse reinforcement of the left double P plate 1001 extends to the inside of the outer gap cavity 1004 and is tied and connected with the connection frame 1003, and the transverse reinforcement of the right double P plate 1002 extends to the inside of the outer gap cavity 1004 and is tied and connected with the connection frame 1003. Since a plurality of transverse reinforcements are arranged in parallel and at intervals inside the double P plate, the ends of a plurality of transverse reinforcements extend into the inside of the outer gap cavity 1004 in the vertical direction. The connection frame 1003 is tied and connected with the transverse reinforcements of the left double P plate 1001 and the right double P plate 1002 from top to bottom, thereby increasing the connection tightness between the connection frame 1003 and the left and right double P plates 1001 and 1002, and improving the strength of the connection parts in the left and right and vertical directions after casting.

[0033] As a preferred structure, the connecting frame 1003 includes a rectangular frame 10031 distributed along multiple vertical parallel intervals and four vertically arranged steel bars 10032. The four steel bars 10032 are distributed in a rectangular shape, and multiple frames 10031 are fixedly connected by the four steel bars 10032. In this structure, the frames 10031 and the steel bars 10032 are both set as steel bars and are pre-woven during construction. Not only is the strength higher, but it also saves subsequent construction time.

[0034] Furthermore, the left end face of the connecting frame 1003 is located on the left side of the inner gap cavity 1005, the right end face of the connecting frame 1003 is located on the right side of the inner gap cavity 1005, the inner side face of the connecting frame 1003 is located on the inner side of the symmetry plane of the inner and outer precast concrete panels of the left double P plate 1001 and the distance from the inner gap cavity 1005 is greater than 3 mm, which is convenient for the subsequent pouring of concrete into the inner gap cavity 1005, and the outer side face of the connecting frame 1003 is located on the inner side of the precast concrete panel outside the left double P plate 1001. Since the left end face of the connecting frame 1003 is located on the left side of the inner gap cavity 1005, the connecting The right end face of the frame 1003 is located on the right side of the inner gap cavity 1005, the inner side face of the connecting frame 1003 is located on the inner side of the symmetry plane of the inner and outer precast concrete slabs of the left double P plate 1001, and the outer side face of the connecting frame 1003 is located on the inner side of the precast concrete slab outside the left double P plate 1001, which can greatly increase the connection strength of the connection parts of the two adjacent double P plates in the left and right and vertical directions. At the same time, the connecting frame 1003 cooperates with the V-shaped connecting ribs arranged inside the double P plate for integral casting, and the two precast concrete slabs of the double P plate are connected by the V-shaped connecting ribs, which further increases the strength of the wall after casting.

[0035] Furthermore, the connection frame 1003 and the outer gap cavity 1004 are symmetrically arranged with respect to the inner gap cavity 1005, so that after pouring concrete, the tension of the connection frame 1003 on the concrete in the left double P plate 1001 and the concrete in the right double P plate 1002 reaches a relatively balanced state, thereby reducing the stress inside the concrete.

[0036] A construction method for the shear wall of the multi-storey assembled house comprises the following steps:

[0037] A. Prefabricate multiple double P boards and prepare a connection frame 1003;

[0038] B. Hoist multiple double P boards and make sure that two adjacent double P boards are aligned and connected;

[0039] C. Place the connection frame 1003 into the outer gap cavity 1004, and adjust the distance between two adjacent double P plates so that the width of the outer gap cavity 1004 is 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate 1001, and the width of the inner gap cavity 1005 is 0.3 to 0.5 times the thickness of the precast concrete plate on one side of the left double P plate 1001;

[0040] D. Support the upper formwork on the inner side of the inner gap cavity 1005 and the outer side of the outer gap cavity 1004, and then pour concrete into the hollow part of the double P plate, the inner gap cavity 1005 of two adjacent double P plates, and the outer gap cavity 1004 of two adjacent double P plates;

[0041] E. After the concrete poured in the previous step solidifies, remove the formwork.

[0042] Furthermore, step C also includes binding and connecting the transverse reinforcements of two adjacent double P plates to the connection frame 1003 to further enhance the strength of the connection portion.

[0043] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A shear wall of a multi-storey assembled house, characterized in that: The invention comprises a wall (1) vertically arranged in the left-right direction, the wall (1) comprising a plurality of double P plates, and two adjacent double P plates are arranged flush with each other, the two adjacent double P plates comprising a left double P plate (1001) and a right double P plate (1002), an inner gap cavity (1005) is arranged between the precast concrete plate on the inner side of the left double P plate (1001) and the precast concrete plate on the inner side of the right double P plate (1002), and the precast concrete plate on the outer side of the left double P plate (1001) and the An outer gap cavity (1004) is provided between the precast concrete slabs on the outer sides of the right double P slab (1002), a connecting frame (1003) is provided inside the outer gap cavity (1004), the width of the outer gap cavity (1004) is 3 to 4 times the thickness of the precast concrete slab on one side of the left double P slab (1001), and the width of the inner gap cavity (1005) is 0.27 to 0.36 times the thickness of the precast concrete slab on one side of the left double P slab (1001); The transverse ribs of the left double P plate (1001) extend to the inside of the outer gap cavity (1004) and are tied and connected to the connecting frame (1003), and the transverse ribs of the right double P plate (1002) extend to the inside of the outer gap cavity (1004) and are tied and connected to the connecting frame (1003); The connection frame (1003) comprises a rectangular frame (10031) distributed along a plurality of vertical parallel intervals and four vertically arranged steel bars (10032), the four steel bars (10032) being distributed in a rectangular shape, and the plurality of frames (10031) being fixedly connected by the four steel bars (10032); The width of the outer gap cavity (1004) is 180-240 mm, and the width of the inner gap cavity (1005) is 16.2-21.6 mm; The connection frame (1003) and the outer gap cavity (1004) are both symmetrically arranged with respect to the inner gap cavity (1005).

2. The shear wall of the multi-storey assembled house according to claim 1 is characterized in that: The width of the connection frame (1003) is 2.5 to 2.8 times the thickness of the precast concrete slab on one side of the left double P slab (1001).

3. The shear wall of the multi-storey assembled house according to claim 1 is characterized in that: The width of the outer gap cavity (1004) is 180 mm, and the width of the inner gap cavity (1005) is 20 mm.

4. The shear wall of a multi-storey assembled house according to any one of claims 1 to 3, characterized in that: The left end surface of the connecting frame (1003) is located on the left side of the inner gap cavity (1005), the right end surface of the connecting frame (1003) is located on the right side of the inner gap cavity (1005), the inner side surface of the connecting frame (1003) is located on the inner side of the symmetry surface of the inner and outer precast concrete panels of the left double P panel (1001) and the distance from the inner gap cavity is greater than 3 mm, and the outer side surface of the connecting frame (1003) is located on the inner side of the precast concrete panel outside the left double P panel (1001).

5. A method for constructing a shear wall of a multi-storey assembled house according to claim 1, characterized in that: The following steps are involved: A. Prefabricate multiple double P boards and prepare a connecting frame (1003); B. Hoist multiple double P boards and make sure that two adjacent double P boards are aligned and connected; C. Place the connection frame (1003) into the outer gap cavity (1004), adjust the distance between two adjacent double P plates, so that the width of the outer gap cavity (1004) is 3 to 4 times the thickness of the precast concrete plate on one side of the left double P plate (1001), and the width of the inner gap cavity (1005) is 0.27 to 0.36 times the thickness of the precast concrete plate on one side of the left double P plate (1001); and tie and connect the transverse reinforcements of the two adjacent double P plates to the connection frame (1003); D. Supporting the upper formwork on the inner side of the inner gap cavity (1005) and the outer side of the outer gap cavity (1004), and then pouring concrete into the hollow part of the double P plate, the inner gap cavity (1005) of two adjacent double P plates, and the outer gap cavity (1004) of two adjacent double P plates; E. After the concrete poured in the previous step solidifies, remove the formwork.

Images