A convenient-to-install prefabricated reinforced concrete shear wall and construction method

Abstract

The present invention discloses a convenient-to-install prefabricated reinforced concrete shear wall and a construction method thereof; the wall comprises a concrete wall, an edge member is provided on the side of the concrete wall, and longitudinal bars protrude vertically from the end face of the concrete wall; a steel beam connector is provided at one end of the edge member; the steel beam connector comprises two flange plates, and a web is provided between the two flange plates. The construction method comprises the following steps: tying stirrups and longitudinal bars in the horizontal connection area, and arranging support members and steel beam connectors on the shear wall, and fixing the steel beam connectors on anchor bolts; arranging hidden beam steel bars and hidden beam stirrups in the vertical connection area; connecting the hidden column longitudinal bars with longitudinal bar connectors, and inserting stirrups in the stirrup perforations; connecting the steel beam connectors with the steel beams; laying composite plates or floor decks on the steel beams, tying floor slab steel bars, pouring concrete, and curing to obtain the wall of the current layer. The present invention has the characteristics of low cost and good fireproof performance.

Description

Technical Field

[0001] The invention relates to a shear wall, in particular to a convenient-to-install prefabricated reinforced concrete shear wall and a construction method. Background Art

[0002] With the development of green buildings and building industrialization, prefabricated shear walls have gradually entered the market, and prefabricated shear walls have begun to gradually replace traditional cast-in-place concrete shear walls. The existing prefabricated shear walls, the existing prefabricated shear wall structure system is mainly steel plate composite shear wall, which is easy to connect, fast to construct, and has guaranteed construction quality; however, the steel plate composite shear wall has poor fire resistance, requires additional fire protection, and has a high cost. The fireproof materials also occupy the usable area of ​​the building, resulting in low efficiency in the use of the building. Fireproof materials are easily destroyed in the later decoration projects, affecting the fire safety of the structure; at the same time, the amount of steel used is high and the cost is high. At the same time, the steel plate composite shear wall also needs manual positioning during assembly, which takes a certain amount of time and is prone to deviations. Therefore, the existing technology has the problems of high cost and poor fire resistance. Summary of the invention

[0003] The object of the present invention is to provide a conveniently installed prefabricated reinforced concrete shear wall and a construction method thereof. The present invention has the characteristics of low construction cost and good fireproof performance.

[0004] The technical solution of the present invention is: a prefabricated reinforced concrete shear wall that is easy to install, including a concrete wall, an edge member is provided on the side of the concrete wall, and vertical protruding longitudinal reinforcement is provided at the upper and lower ends of the concrete wall; one end of the edge member is provided with a steel beam connector; the steel beam connector includes two flange plates distributed parallel to each other up and down, and a group of vertically distributed webs is provided between the two flange plates.

[0005] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, anchor bolts are provided at the upper and lower ends of the edge member, and a steel beam connector is provided on the anchor bolt at one end.

[0006] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, an edge member is provided on one side of the concrete wall, and a horizontal protruding longitudinal reinforcement is provided on the other side of the concrete wall.

[0007] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, edge components are provided on both sides of the concrete wall.

[0008] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, the edge member is a straight-line, L-shaped, T-shaped or end column structure.

[0009] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, studs or shear keys are provided on the flange plates.

[0010] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, horizontal longitudinal bars corresponding to the horizontal protruding longitudinal bars and vertical longitudinal bars corresponding to the vertical protruding longitudinal bars are arranged in the concrete wall body, and tension bars are also arranged on the vertical longitudinal bars.

[0011] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, the edge component includes a concrete hidden column, a hidden column steel bar skeleton is provided in the concrete hidden column, and the horizontal longitudinal bars are anchored in the concrete hidden column; the hidden column steel bar skeleton includes interconnected hidden column longitudinal bars, hidden column stirrups and hidden column tension bars; the upper and lower ends of the hidden column longitudinal bars respectively pass through the upper and lower surfaces of the concrete hidden column; the anchor bolts are located at the upper and lower ends of the concrete hidden column.

[0012] In the aforementioned easy-to-install prefabricated reinforced concrete shear wall, the flange plate is provided with anchor holes; the web plate is provided with stirrup through holes and concrete pouring holes.

[0013] A construction method for a conveniently installed prefabricated reinforced concrete shear wall, before pouring concrete of a lower floor slab, hoisting the conveniently installed prefabricated reinforced concrete shear wall required for the wall of the current layer in place, and completing the connection between the wall of the current layer and the lower floor slab through a hidden beam between the lower floor slab and the wall of the current layer;

[0014] The construction and pouring of the wall of this layer includes the following specific steps:

[0015] The first step is to form a horizontal connection area between the two prefabricated reinforced concrete shear walls of this layer, tie the stirrups and longitudinal reinforcement in the horizontal connection area, set support members and steel beam connectors on the corresponding prefabricated reinforced concrete shear walls, and fix the steel beam connectors on the anchor bolts with nuts;

[0016] The second step is to hoist the two convenient prefabricated reinforced concrete shear walls of the upper layer to the corresponding positions above the convenient prefabricated reinforced concrete shear walls of the current layer, match them with the steel beam connectors of the current layer, and use nuts to fix the steel beam connectors to the convenient prefabricated reinforced concrete shear walls above; a vertical connection area is formed between the convenient prefabricated reinforced concrete shear walls of the upper layer and the convenient prefabricated reinforced concrete shear walls of the current layer;

[0017] The third step is to set the hidden beam reinforcement and hidden beam stirrups in the vertical connection area;

[0018] Step 4: In the edge member connection area formed by the steel beam connector area, the upper and lower adjacent concealed column longitudinal reinforcements are connected by longitudinal reinforcement connectors, and stirrups are inserted into the stirrup holes;

[0019] Step 5: Connect the steel beam connector to the steel beam by full bolt connection, bolt welding connection or full welding connection;

[0020] Step 6: Formwork for post-cast concrete in horizontal connection areas, vertical connection areas and edge component connection areas.

[0021] Step 7: Lay the composite slab or floor deck on the steel beam, tie the floor slab reinforcement, pour the concrete of the floor slab and the back pouring area of ​​the shear wall, and obtain the wall of this layer after curing and forming;

[0022] Repeat the first to seventh steps until the concrete construction of the roof slab is completed;

[0023] The easy-to-install prefabricated reinforced concrete shear wall adopts the easy-to-install prefabricated reinforced concrete shear wall mentioned above.

[0024] Compared with the prior art, the present invention is composed of a concrete wall, an edge member and a steel beam connector, and combines the assembled reinforced concrete shear wall and the steel beam structure into one to replace the traditional shear wall structure. The assembly rate and prefabrication rate are high, which meets the requirements of building industrialization and green buildings. At the same time, it has good fire resistance, low cost, and convenient connection. Specifically, the present invention is not only convenient for assembly construction, but also convenient and quick to connect, and ensure the construction quality by setting a steel beam connector composed of two upper and lower flange plates and a web at one end of the edge member, and does not need to use a large amount of steel, so that the cost can be effectively reduced. The present invention only needs to set a steel beam connector, and the upper and lower adjacent shear walls are connected by the method of plug-in positioning and nut fixing, which not only reduces the use of steel beam connectors, but also greatly facilitates the positioning and installation of the shear wall, improves the installation accuracy, reduces the difficulty of installation, reduces the time spent on positioning, and improves the installation efficiency. In addition, due to the high height of the steel beam connector, it is convenient for pipeline insertion, so that the use effect of the building is good. In summary, the present invention has the characteristics of low cost and good fireproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 yes Figure 1 A partial enlarged view of

[0027] Figure 3 This is the installation view of the steel beam connector and the edge member;

[0028] Figure 4 yes Figure 3 A partial enlarged view of

[0029] Figure 5It is an interior view of the interior and edge members of the concrete wall;

[0030] Figure 6 It is the steel bar connection flow chart of the vertical connection area;

[0031] Figure 7 It is the reinforcement connection flow chart of the horizontal connection area;

[0032] Figure 8 It is a schematic diagram of the construction process of the present invention;

[0033] Fig. 9 It is the installation flow chart of steel beam connectors;

[0034] Fig.10 It is a structural view of the edge member of the L-shaped structure;

[0035] Fig.11 It is a structural view of the edge member of the T-shaped structure.

[0036] The markings in the attached drawings are: 1-concrete wall, 2-edge member, 3-horizontal protruding longitudinal reinforcement, 4-vertical protruding longitudinal reinforcement, 5-steel beam connector, 6-horizontal longitudinal reinforcement, 7-vertical longitudinal reinforcement, 8-tension reinforcement, 201-concrete hidden column, 202-hidden column longitudinal reinforcement, 203-hidden column stirrups, 204-hidden column tension reinforcement, 205-anchor bolt, 501-flange plate, 502-web plate, 503-anchor bolt hole, 504-stirrup through hole, 505-concrete pouring hole. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0038] Embodiment. A prefabricated reinforced concrete shear wall that is easy to install, comprising: Figures 1 to 11 As shown, it includes a concrete wall 1, an edge member 2 is provided on the side of the concrete wall 1, and vertical protruding longitudinal reinforcement 4 is provided at the upper and lower ends of the concrete wall 1; one end of the edge member 2 is provided with a steel beam connector 5; the steel beam connector 5 includes two flange plates 501 distributed parallel to each other up and down, and a group of vertically distributed webs 502 is provided between the two flange plates 501.

[0039] The edge member 2 is provided with anchor bolts 205 at both ends, and a steel beam connector 5 is provided on the anchor bolt 205 at one end.

[0040] An edge member 2 is provided on one side of the concrete wall 1 , and a horizontal protruding longitudinal reinforcement 3 is provided on the other side of the concrete wall 1 .

[0041] Edge components 2 are provided on both sides of the concrete wall 1 .

[0042] The edge member 2 is in a straight line, L-shaped, T-shaped structure or an end column structure.

[0043] The flange plate 501 is provided with studs or shear keys.

[0044] The concrete wall 1 is provided with horizontal longitudinal bars 6 corresponding to the horizontal protruding longitudinal bars 3 and vertical longitudinal bars 7 corresponding to the vertical protruding longitudinal bars 4 . The vertical longitudinal bars 7 are also provided with tension bars 8 .

[0045] The edge member 2 includes a concrete hidden column 201, in which a hidden column steel bar skeleton is arranged, and horizontal longitudinal bars 6 are anchored into the concrete hidden column 201; the hidden column steel bar skeleton includes mutually connected hidden column longitudinal bars 202, hidden column stirrups 203 and hidden column tension bars 204; the upper and lower ends of the hidden column longitudinal bars 202 respectively pass through the upper and lower surfaces of the concrete hidden column 201; the anchor bolts 205 are located at the upper and lower ends of the concrete hidden column 201.

[0046] The flange plate 501 is provided with anchor holes 503 ; the web plate 502 is provided with stirrup through holes 504 and concrete pouring holes 505 .

[0047] When installing a convenient prefabricated reinforced concrete shear wall, holes or post-casting areas for inserting floor slab reinforcements need to be reserved on the wall.

[0048] A construction method for a conveniently installed prefabricated reinforced concrete shear wall, before pouring concrete of a lower floor slab, hoisting the conveniently installed prefabricated reinforced concrete shear wall required for the wall of the current layer in place, and completing the connection between the wall of the current layer and the lower floor slab through a hidden beam between the lower floor slab and the wall of the current layer;

[0049] The construction and pouring of the wall of this layer includes the following specific steps:

[0050] The first step is to form a horizontal connection area between the two prefabricated reinforced concrete shear walls of this layer, tie the stirrups and longitudinal reinforcement in the horizontal connection area, set support members and steel beam connectors on the corresponding prefabricated reinforced concrete shear walls, and fix the steel beam connectors on the anchor bolts with nuts;

[0051] The second step is to hoist the two convenient prefabricated reinforced concrete shear walls of the upper layer to the corresponding positions above the convenient prefabricated reinforced concrete shear walls of the current layer, match them with the steel beam connectors of the current layer, and use nuts to fix the steel beam connectors to the convenient prefabricated reinforced concrete shear walls above; a vertical connection area is formed between the convenient prefabricated reinforced concrete shear walls of the upper layer and the convenient prefabricated reinforced concrete shear walls of the current layer;

[0052] The third step is to set the hidden beam reinforcement and hidden beam stirrups in the vertical connection area;

[0053] Step 4: In the edge member connection area formed by the steel beam connector area, the upper and lower adjacent concealed column longitudinal reinforcements are connected by longitudinal reinforcement connectors, and stirrups are inserted into the stirrup holes;

[0054] Step 5: Connect the steel beam connector to the steel beam by full bolt connection, bolt welding connection or full welding connection;

[0055] Step 6: Formwork for post-cast concrete in horizontal connection areas, vertical connection areas and edge component connection areas.

[0056] Step 7: Lay the composite slab or floor deck on the steel beam, tie the floor slab reinforcement, pour the concrete of the floor slab and the back pouring area of ​​the shear wall, and obtain the wall surface of this layer after curing and forming;

[0057] Repeat the first to seventh steps until the concrete construction of the roof slab is completed;

[0058] The easy-to-install prefabricated reinforced concrete shear wall adopts the easy-to-install prefabricated reinforced concrete shear wall mentioned above.

[0059] The connection sequence of the hidden beam steel bars and the hidden beam longitudinal bars in the vertical connection area is as follows: 1. The lower layer of longitudinal bars are in place, forming an inverted U shape; 2. The upper layer of longitudinal bars are in place, forming a U shape; 3. Add the stirrups of the hidden beam; 4. Use the concrete pouring holes opened on the web of the steel beam connector to insert the hidden beam longitudinal bars

[0060] The order of connecting steel bars in the horizontal connection area is as follows: 1. The horizontal longitudinal bars on one side are in place, forming a U shape; 2. The horizontal longitudinal bars on the other side are in place, forming a U shape in the opposite direction; 3. Add stirrups; 4. Insert the longitudinal bars in the horizontal connection area from the top to complete the steel bar connection.

[0061] The connection sequence of steel beams in the edge component area is as follows: 1. Put the steel beam connector in place; 2. Use anchor bolts to position the steel beam connector; 3. Screw nuts on the anchor bolts to fix the steel beam connector; 4. Put the precast shear wall on the upper layer in place, and the anchor bolts at the bottom pass through the anchor holes opened on the flange plate at the upper end of the steel beam connector and fix them with nuts; 5. The connection of the longitudinal reinforcement of the remaining edge components, the setting of stirrups and the pouring of concrete are the same as the connection when the beam width is larger.

[0062] When pouring the core area of ​​the node, directly using steel plate components that do not require formwork removal can enhance the connection effect of the steel bars and reduce the requirements for strong connections such as steel bars.

[0063] In order to enhance the bonding performance between the flange plate and the column concrete and improve the shear bearing capacity, shear keys or studs may be provided on the upper and lower sides of the flange plate.

Claims

1. A convenient-to-install prefabricated reinforced concrete shear wall, characterized in that: The invention comprises a concrete wall (1), wherein an edge member (2) is provided on the side of the concrete wall (1), and vertically protruding longitudinal ribs (4) are provided at the upper and lower ends of the concrete wall (1); a steel beam connector (5) is provided at one end of the edge member (2); the steel beam connector (5) comprises two flange plates (501) arranged in parallel up and down, and a group of vertically arranged web plates (502) is provided between the two flange plates (501); anchor bolts (205) are provided at the upper and lower ends of the edge member (2), and the anchor bolts (205) are connected to the steel beam connector (5); and bolts or shear keys are provided on the flange plates (501).

2. The easy-to-install prefabricated reinforced concrete shear wall according to claim 1, characterized in that: An edge member (2) is provided on one side of the concrete wall (1), and a horizontal protruding longitudinal rib (3) is provided on the other side of the concrete wall (1).

3. The easy-to-install prefabricated reinforced concrete shear wall according to claim 1, characterized in that: Edge components (2) are provided on both sides of the concrete wall (1).

4. The easy-to-install prefabricated reinforced concrete shear wall according to claim 1, characterized in that: The edge member (2) is of a straight-line, L-shaped, T-shaped or end-column structure.

5. The easy-to-install prefabricated reinforced concrete shear wall according to claim 2, characterized in that: The concrete wall (1) is provided with horizontal longitudinal bars (6) corresponding to the horizontal protruding longitudinal bars (3) and vertical longitudinal bars (7) corresponding to the vertical protruding longitudinal bars (4), and tension bars (8) are also provided on the vertical longitudinal bars (7).

6. The easy-to-install prefabricated reinforced concrete shear wall according to claim 5, characterized in that: The edge member (2) comprises a concrete hidden column (201), a hidden column steel bar skeleton is arranged inside the concrete hidden column (201), and horizontal longitudinal bars (6) are anchored into the concrete hidden column (201); the hidden column steel bar skeleton comprises mutually connected hidden column longitudinal bars (202), hidden column stirrups (203) and hidden column tension bars (204); the upper and lower ends of the hidden column longitudinal bars (202) respectively pass through the upper and lower surfaces of the concrete hidden column (201); and the anchor bolts (205) are located at the upper and lower ends of the concrete hidden column (201).

7. The easy-to-install prefabricated reinforced concrete shear wall according to claim 1, characterized in that: The flange plate (501) is provided with anchor holes (503); the web plate (502) is provided with stirrup through holes (504) and concrete pouring holes (505).

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