CN115538651A - Assembled prestressed shear wall and use method thereof - Google Patents

Abstract

The invention belongs to the technical field of structural engineering, and particularly relates to an assembled prestressed shear wall and a use method thereof; the device comprises: the corrugated pipe is horizontally arranged in the wall body, the prestressed steel bars are arranged in the corrugated pipe, the edge members are arranged on two sides of the wall body, and the edge member main bars are vertically arranged in the edge members; compared with the prior art, the invention has the following advantages: (1) The building assembly rate is improved, and the bearing capacity of the component is not reduced; (2) industrializing the fabricated building; and (3) reducing the on-site wet operation and carbon emission and the like.

Description

A prefabricated prestressed shear wall and its application method

technical field

The invention belongs to the technical field of structural engineering, and in particular relates to an assembled prestressed shear wall and an application method thereof.

Background technique

In recent years, in order to meet the industrialization of construction and reduce carbon emissions to protect the environment, the country has vigorously promoted prefabricated buildings.

However, compared with the traditional on-site pouring operation mode, the prefabricated building technology is not fully mature and the cost is high, so there is great resistance in the process of promotion. Traditional prefabricated components are combined and connected at the floor, and the connection is more complicated. In addition, the bearing capacity of the components at the connection should also be guaranteed, so a better connection method is required. Therefore, the shear wall needs to be connected as soon as possible. It is possible to simplify the structure while ensuring the bearing capacity of the wall.

Therefore, there is an urgent need for a shear wall that can reduce component connections and ensure connection strength, so a prefabricated prestressed shear wall is designed.

Contents of the invention

The present invention aims at the above-mentioned problems, and designs a prefabricated prestressed shear wall in a targeted manner. The connection position of the wall is set in the middle of the floor to ensure the integrity of the horizontal components at the floor. The method of prefabricating the wall body reduces the problem of unsuitable control of product quality caused by on-site wet processing.

In order to achieve the above object, the present invention provides a prefabricated prestressed shear wall, comprising: wall, prestressed steel bars, edge components, main reinforcement of edge components and bellows;

The wall includes pre-embedded slab reinforcement and pre-embedded beam reinforcement;

The corrugated pipe is placed horizontally in the wall, one end of the corrugated pipe passes through the side of the wall, and the other end passes through the slope of the wall, edge members are arranged on both sides of the wall , the main rib of the edge member runs through the edge member longitudinally;

The prestressed steel bars are placed in the bellows and fixed after the two walls are assembled;

The pre-embedded slab reinforcement is thrown out and connected with the reinforcement in the floor slab, and the pre-embedded beam reinforcement is thrown out and connected with the beam reinforcement in the floor beam.

Further, the bellows is provided with an anchoring device; the anchoring device is used to fix the prestressed steel bars.

Further, the inclination of the upper and lower slopes of the wall 1 is 45° and can be attached to each other; the quality inspection of the walls is attached to each other, which can ensure the overall verticality and improve the bearing capacity.

The present invention also proposes a method for using an assembled prestressed shear wall, comprising the following steps:

Step 1. The shear wall needs to be poured in the factory, and the distance between the edge components and the slope of the wall is reserved for post-casting. Before pouring, the bellows need to be reserved in the wall, and the pre-buried in the middle of the wall Plate reinforcement and pre-embedded beam reinforcement thrown out;

The post-pouring distance is used to facilitate the connection of the main reinforcement of the edge components and to facilitate on-site construction.

Step 2, transporting the shear wall to the site for installation, connecting the upper and lower slopes of the two walls, aligning and connecting the corrugated pipes, and aligning and connecting the main ribs of the edge components;

Step 3: Carry out the concrete pouring work of the cast-in-place components, perform maintenance after the pouring is completed, and when the concrete strength reaches the design strength, carry out the perforation and stretching work of the prestressed steel bars, and fix them with anchoring devices;

Step 4: After the tensioning is completed, grouting is performed at the post-casting area of the edge member, the gap between the prestressed steel bar and the wall, and the butt joint of the wall.

Further, the post-cast area in Step 4 is the area formed by the edge member and the post-cast distance; the post-cast area is used for the post-cast concrete to enter the mold and complete vibration curing.

Further, when the installation and docking of the wall is completed and the floor slab needs to be built, the embedded slab reinforcement is connected to the reinforcement in the floor slab, and the embedded beam reinforcement is connected to the reinforcement in the floor beam. Beam connections.

In summary, a prefabricated prestressed shear wall of the present invention has the following advantages and beneficial technical effects:

1. A prefabricated prestressed shear wall of the present invention is assembled and prefabricated, processed in the factory, and transported to the site, where it can be quickly assembled on site to speed up the construction progress;

2. A kind of prefabricated prestressed shear wall of the present invention has heard the use of prestressed steel bars, so that the wall can be better connected, and the design bearing capacity of the components is guaranteed not to be reduced;

3. A prefabricated prestressed shear wall of the present invention can improve the industrialization level of the building, increase labor productivity, and solve the problem that the product quality caused by on-site wet operation processing is not suitable for control.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is the structural representation of a kind of prefabricated prestressed shear wall of the present invention;

Fig. 2 is the installation schematic diagram of a kind of prefabricated prestressed shear wall of the present invention;

Fig. 3 is the enlarged view of Fig. 2 kind A of the present invention;

Fig. 4 is the top view of a kind of prefabricated prestressed shear wall of the present invention;

Fig. 5 is a schematic diagram of the connection between an assembled prestressed shear wall and a floor slab of the present invention;

Fig. 6 is a schematic diagram of the connection between an assembled prestressed shear wall and a floor beam of the present invention;

Fig. 7 is a completed pouring diagram of a prefabricated prestressed shear wall of the present invention.

The reference signs in the accompanying drawings are:

1-wall; 11-embedded plate reinforcement; 12-embedded beam reinforcement;

2- prestressed reinforcement;

3- edge member;

4- The main reinforcement of the edge member;

5- bellows; 51-anchor device;

6-floor slab; 61-slab reinforcement;

7-floor beam; 71-beam reinforcement.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar symbols represent the same or similar elements or elements with the same or similar functions; the described embodiments are some embodiments of the present invention, rather than all embodiments; The described embodiments and directional words are exemplary, intended to explain the present invention, but not to be construed as limitations on the present invention; All other embodiments obtained under the premise all belong to the protection scope of the present invention. Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

[Example 1]:

As shown in Figure 1, Figure 3 and Figure 4, it includes a wall 1, a prestressed steel bar 2, an edge member 3, the main reinforcement of the edge member 4 and a bellows 5;

The bellows 5 is horizontally arranged inside the uncast wall 1 in advance, and runs through the wall 1, and the bellows 5 is provided with an anchoring device 51 at one end of the vertical surface of the wall 1;

Preferably, the diameter of the bellows 5 is 1.5 times the diameter of the prestressed steel bar 2 .

Edge members 3 are arranged on both sides of the wall 1, and the main ribs 4 of the edge members run through the edge members 3 longitudinally;

As shown in Figures 5 and 6, pre-embedded slab reinforcement 11 and pre-embedded beam reinforcement 12 are arranged in the middle of the wall 1, and the pre-embedded slab reinforcement 11 and pre-embedded beam reinforcement 12 are thrown out for use, and then the wall 1 The pouring is completed in the factory, and the post-pouring distance is reserved between the edge member 3 and the slope of the wall 1 during pouring;

Preferably, the post-pouring distance should be reserved only within the range of the edge member 3, and the reserved size should not only ensure the effective connection of steel bars, but also facilitate on-site construction.

As shown in Figure 2, the prestressed steel bar 2 is placed in the bellows 5 of the wall body 1 after butt joint, and is fixed by an anchor device 51, and the main bars 4 of the edge members are connected correspondingly;

Preferably, steel strands are used for the prestressed steel bars 2, metal bellows are used for the bellows 5, and the connection mode of the main reinforcement 4 of the edge member is sleeve connection.

Preferably, the prestressed steel bar 2 should be able to pass through the bellows 5, and ensure smooth grouting.

As shown in FIG. 5 and FIG. 6 , the pre-embedded slab reinforcement 11 and the pre-embedded beam reinforcement 12 are respectively overlapped with the slab reinforcement 61 and the beam reinforcement 71 and then welded.

[Example 2]:

The second embodiment discloses a method for using a prefabricated prestressed shear wall, including the following steps:

Step 1, as shown in Figure 1, the shear wall needs to be poured in the factory, and the distance between the edge member 3 and the slope of the wall 1 is reserved for post-casting, and the bellows 5 needs to be reserved in the wall 1 before pouring, and Throw out the pre-embedded slab reinforcement 11 and the pre-embedded beam reinforcement 12 at the middle position of the wall;

Step 2, as shown in Figure 2, transport the shear wall to the site for installation, connect the upper and lower slopes of the two walls 1, align the bellows 5 with each other, and connect the main ribs 4 of the edge members with a sleeve;

Step 3, as shown in Figure 3, carry out the concrete pouring work of cast-in-place components, carry out maintenance after pouring is completed, when the concrete strength reaches design strength, carry out the perforation stretching work of prestressed steel bar 2, and fix with anchoring device 51;

Step 4. As shown in FIG. 7 , after the tensioning is completed, grouting is performed on the post-casting area of the edge member 3 , the gap between the prestressed steel bar 2 and the wall 1 , and the butt joint of the wall 1 .

As shown in FIG. 2 and FIG. 4 , the post-casting area in Step 4 is the area formed by the edge member 3 and the post-casting distance.

As shown in Figure 5 and Figure 6, when the wall body 1 is installed and docked and the floor slab 6 needs to be built, the pre-embedded slab reinforcement 11 and the slab reinforcement 61 in the floor slab 6 are overlapped and then welded, and the pre-embedded beam reinforcement 12 Weld after being overlapped with the beam reinforcement 71 in the floor beam 7 .

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: they can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and these The modification or replacement does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (6)

1. An assembled prestressed shear wall, characterized in that it includes a wall (1), prestressed steel bars (2), edge members (3), edge member main reinforcement (4) and bellows (5); The wall (1) includes pre-embedded slab reinforcement (11) and pre-embedded beam reinforcement (12); The corrugated pipe (5) is horizontally placed in the wall (1), one end of the corrugated pipe (5) passes through the side of the wall (1), and the other end passes through the wall (1) ), edge members (3) are arranged on both sides of the wall (1), and the main ribs (4) of the edge member run through the edge member (3) longitudinally; The prestressed steel bars (2) are placed in the bellows (5) and fixed after the two walls (1) are assembled; The pre-embedded slab reinforcement (11) is thrown out and connected with the reinforcement (61) in the floor slab (6), and the pre-embedded beam reinforcement (12) is thrown out and connected with the beam reinforcement ( 71) Connect. 2. An assembled prestressed shear wall according to claim 1, characterized in that: the bellows (5) is provided with an anchoring device (51). 3. A prefabricated prestressed shear wall according to claim 2, characterized in that: the inclination of the upper and lower slopes of the wall (1) is 45°, and the two walls (1) Compatible with each other. 4. A method for using a prefabricated prestressed shear wall, comprising the steps of: Step 1. The shear wall needs to be poured in the factory, and the distance between the edge member (3) and the slope of the wall (1) is reserved for post-casting. Before pouring, the bellows ( 5), and throw out the pre-embedded slab reinforcement (11) and pre-embedded beam reinforcement (12) in the middle of the wall; Step 2: Transport the shear wall to the site for installation, connect the upper and lower slopes of the two walls (1), align and connect the corrugated pipes (5), and align and connect the main ribs (4) of the edge members; Step 3: Carry out the concrete pouring work of the cast-in-place components, perform maintenance after the pouring is completed, and when the concrete strength reaches the design strength, carry out the perforation and stretching work of the prestressed steel bar (2), and fix it with the anchor device (51); Step 4. After the tensioning is completed, in the post-casting area of the edge member (3), the gap between the prestressed steel bar (2) and the wall (1) and the butt joint of the wall (1) Perform grouting. 5. A method for using a prefabricated prestressed shear wall according to claim 4, characterized in that: the post-casting area in step 4 is the area formed by the edge member (3) and the post-casting distance. 6. The method of using a prefabricated prestressed shear wall according to claim 5, characterized in that: when the wall (1) is installed and docked, and the floor slab (6) needs to be built, the The pre-embedded slab reinforcement (11) is connected with the reinforcement (61) in the floor slab (6), and the pre-embedded beam reinforcement (12) is connected with the beam reinforcement (71) in the floor beam (7) .

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