CN105544798B - Assembled hollow slab shear wall structure and construction method thereof - Google Patents

Abstract

The invention discloses an assembled hollow wallboard shear wall structure and a construction method thereof. The shear wall structure comprises at least 4 assembled shear walls; each assembled shear wall comprises a plurality of hollow wallboards which are sequentially arranged from bottom to top, a horizontal joint is formed at the joint of two adjacent hollow wallboards, and a hidden beam is arranged at the joint; a plurality of reserved drawing holes of the wall plate are vertically formed in each hollow wall plate, and vertical connecting pieces are arranged in the reserved drawing holes of the wall plates; at the joint of two adjacent assembled shear walls, the end part of the corresponding hollow wallboard is provided with an overhanging thin wall extending outwards and an embedded wallboard connecting piece, and a cast-in-place node connecting piece is arranged at the joint; and a channel for embedding a wire tube box or/and a water tube is arranged in the hidden beam along the length direction of the hidden beam. The invention has strong universality, relatively low cost, easy production and convenient construction.

Description

An assembled hollow slab shear wall structure and construction method thereof

technical field

The invention relates to an assembled hollow wall panel shear wall structure and a construction method thereof, belonging to the field of construction industrialization.

Background technique

In the existing prefabricated shear wall structure system, the prefabricated shear walls are constructed in the form of layered prefabrication (according to floor height) and on-site assembly. The vertical steel bars between the upper and lower prefabricated shear walls are connected in the form of grouting sleeves, bellows grout anchors and restraint grout anchors. In the shear wall structure of these three connection forms, the wall panels are all solid wall panels, which are heavy and difficult to lift.

According to DB11/1003-2013 (Beijing local standard), "Design Regulations for Fabricated Shear Wall Structure", prefabricated circular perforated plate shear wall system can be used when the building height is less than 60m in the 7 degree area. In this system, the circular hole plate shear wall is prefabricated in layers (according to the height of the floor), the vertical connection steel bars of the wall panels are arranged in the circular holes, and the upper and lower layers of steel bars are lapped and connected. The round orifice panels are spliced according to a certain width and modulus. There are many vertical seams on the wall panels, and there are a large number of external formwork during construction, which is inconvenient for on-site construction.

In addition, in the existing hollow wall panel structure system, the pre-embedded line pipe needs to be arranged vertically along the round hole channel, and when the line pipe is laid horizontally, it needs to be slotted on site, and the construction efficiency is low.

SUMMARY OF THE INVENTION

The invention aims to provide an assembled hollow wall panel shear wall structure and a construction method thereof. The assembled hollow wall panel shear wall structure has strong versatility, relatively low cost, easy production and convenient construction.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A prefabricated hollow wall panel shear wall structure, comprising at least 4 prefabricated shear walls, at least 4 prefabricated shear walls are connected in sequence to form a closed shear wall structure; each prefabricated shear wall includes A plurality of hollow wall panels are arranged in sequence from bottom to top, and a horizontal joint is formed at the joint of the two adjacent hollow wall panels, and horizontally arranged concealed beams are arranged in the wall at the joint; There are a plurality of reserved draw holes for wall panels vertically on the wall panel, and the reserved draw holes for the wall panels corresponding to the two adjacent hollow wall panels at the top and bottom are connected to each other, and vertical draw holes are arranged in the reserved draw holes of the butt-connected wall panels. At the connection of the adjacent two-sided prefabricated shear walls, the ends of the corresponding hollow wall panels have outwardly extending cantilevered thin walls and pre-embedded wall panel connectors, and there is a cast-in-place connection at the connection. Node connectors, between the embedded wall panel connectors of two horizontally adjacent hollow wall panels and between the embedded wall panel connectors and the cast-in-place node connectors are fixedly connected; There are channels for pre-embedded line pipes or/and water pipes.

As a result, two adjacent hollow wall panels are spliced together and reinforced by horizontally arranged hidden beams, and the two adjacent hollow wall panels are fixed by cantilevered thin walls, pre-embedded wall panel connectors, and cast-in-place node connectors. The pouring is connected, and the structure is reliable. At the same time, the vertical wall panels are reserved for pouring, which further enhances the structural integrity of the wall, and the construction is convenient and easy.

According to the embodiment of the present invention, the present invention can also be further optimized, and the following are the technical solutions formed after optimization:

Preferably, each prefabricated shear wall is assembled from 3-6 hollow wall panels, and a window installation area is provided in the middle of at least one prefabricated shear wall.

As a specific structural form, a single-sided shear wall with a window installation area includes a hollow wall panel on the lowermost layer, a hollow wall panel on the uppermost layer, and a hollow wall panel on the lowermost layer and the lowest layer. Two middle hollow wall panels between one hollow wall panel on the upper layer; two middle hollow wall panels, one hollow wall panel on the lowermost layer, and one hollow wall panel on the uppermost layer enclose the window installation area.

In the upper and lower adjacent two hollow wall panels of each prefabricated shear wall, the upper end face of the lower hollow wall panel forms a horizontally arranged lower groove, and the lower end face of the upper layer hollow wall panel forms a horizontally arranged upper groove; The top ends of the two side walls of the lower groove and the bottom ends of the two side walls of the upper groove are butt-jointed to form a horizontal seam. If the opening of the upper groove is downward, the opening of the lower groove is upward. Preferably, the lower groove and the upper groove are butted to form a transversely arranged through channel, and the through channel is provided with the dark beam. The longitudinal section of the through channel is preferably square.

In order to increase the structural strength of the concealed beams, the concealed beams are horizontally arranged stirrups, the pre-embedded wall panel connectors are stirrups or hook bars, and the cast-in-place node connectors are stirrups. Further, beam longitudinal bars are provided in the concealed beam; cast-in-place node longitudinal bars are provided in the pre-embedded wall panel connectors and the cast-in-place node connectors.

Among the upper and lower adjacent hollow wall panels of each prefabricated shear wall, the lower hollow wall panel or the upper hollow wall panel is pre-buried with a wire box connected to the line pipe, and the lower hollow wall panel or the upper hollow wall panel A water supply point is preset on the inner side wall of the wall panel.

Preferably, the wall panel reserved draw holes are square holes or round holes.

Based on the same inventive concept, the present invention also provides a construction method for the above-mentioned prefabricated hollow wall panel shear wall structure, which comprises the following steps:

S1, arranging vertical connecting pieces to form the vertical connecting ribs of the assembled hollow wall panel structure;

S2, hoist the hollow wall panel of the lowest layer, so that the vertical connector passes through the wall panel of the hollow wall panel of the lowest layer to reserve an extraction hole;

S3. The lowermost hollow wall panel is installed in place, so that the cantilevered thin walls at the ends of two adjacent hollow wall panels are vertically or horizontally spliced, and the embedded wall panel connectors at the ends of the two adjacent hollow wall panels are connected between Fixed and connected; and a hidden beam is arranged at the top of the hollow wall panel of the lowermost layer, and the vertical connecting piece is passed through the hidden beam;

S4. After the hidden beam layout is completed, according to the layout of the water and electricity lines, the pre-buried wire line box or/water pipe is reserved in the pumping hole along the hidden beam and the wall panel;

S5. The concrete in the lowermost hollow wall panel is poured in-situ. After the pipeline is arranged, the concrete at the in-situ nodes of the cast-in-place nodes of the adjacent two-sided prefabricated shear walls shall be reserved for the pouring of the wall panel;

S6, the construction of the middle and top hollow wall panels, during the construction process, repeat the process steps S2-S5 in the construction of the lower layer wall panels, and after the top layer of the hollow wall panels is poured, the subsequent floor construction is carried out.

Of course, it is also possible to complete the concrete pouring of the holes and concealed beams in the entire storey height range at one time after the wall panels are installed in the entire storey height range.

Compared with the prior art, the beneficial effects of the present invention are: the shear wall structure of the present invention is simple in construction, strong in versatility, stable in connection, relatively low in cost, easy in production, greatly accelerated in construction speed, and improved in construction efficiency .

The present invention will be further elaborated below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the assembly schematic diagram of the prefabricated hollow wall panel system of the present invention;

Fig. 2 is a large sample drawing of the prefabricated wallboard of the present invention;

Fig. 3 is the prefabricated wall panel elevation separation view of the present invention;

4 is a schematic plan view of a thin-walled cast-in-place node of the present invention;

Fig. 5 is a schematic diagram of the present invention's wall top flanging;

6 is a schematic diagram of a shear wall with a window installation area of the present invention;

Fig. 7 is a large-scale drawing of the laying of electric conduits in the horizontal connection seam of the present invention;

FIG. 8 is a large sample view of the laying of water pipes in the horizontal joint of the present invention;

Fig. 9 is a partial enlarged view of the horizontal connecting seam of the present invention.

Detailed ways

A prefabricated hollow wall panel shear wall structure, as shown in Figure 1-3, includes 4 prefabricated shear walls, which are connected in turn to form a closed shear wall structure; The prefabricated shear wall includes a plurality of hollow wall panels arranged in sequence from bottom to top, and a horizontal joint 5 is formed at the joint of the two adjacent hollow wall plates, and a horizontal joint 5 is formed in the wall at the joint 5. The hidden beam 3 arranged; each hollow wall panel 20 is vertically provided with a plurality of wall panel reserved draw holes 18, and the wall panels reserved draw holes 18 corresponding to the upper and lower adjacent two hollow wall panels are butt-connected, and in the docking Vertical connectors 26 are arranged in the reserved draw holes 18 of the connected wall panels, and the upper and lower vertical connectors 26 are connected in series and fixed in sequence; At the corner, the end of the corresponding hollow wall panel 20 has a cantilevered thin wall 21 and a pre-embedded wall panel connector 23 extending outward, and a cast-in-place node connector 22 is provided at the connection, which is horizontally adjacent Between the embedded wall panel connectors 23 of the two hollow wall panels 20 and between the embedded wall panel connectors 23 and the cast-in-place node connectors 22 are fixedly connected; the concealed beam 3 is a horizontally arranged stirrup, The pre-embedded wall panel connectors 23 are stirrups or hook bars and the cast-in-place node connectors 22 are stirrups. Beam longitudinal bars 4 are provided in the concealed beam 3 ; cast-in-place node longitudinal bars 24 are both provided in the embedded wall panel connector 23 and the cast-in-place node connector 22 . As shown in Figures 7 and 8, the concealed beam 3 is provided with a pre-embedded wire pipe 16, a wire box 19 or/a water pipe 17 along its length.

Preferably, each prefabricated shear wall is assembled from 3-6 hollow wall panels, and a window installation area 12 is provided in the middle of at least one prefabricated shear wall. In this embodiment, the shear wall without windows is composed of 3 hollow wall panels 13, 14, 15 from bottom to top, and the shear wall with windows is composed of 4 hollow wall panels 1, 2, 10, 11 stitched together. As shown in FIGS. 1 and 6 , the single-sided shear wall provided with the window installation area 12 includes a hollow wall panel 1 on the lowermost layer, a hollow wall panel 11 on the uppermost layer, and a hollow wall panel on the lowermost layer. Two middle hollow wall panels 2, 10 between the wall panel 1 and the uppermost hollow wall panel 11; The window installation area 12 is enclosed between the wall panels 11 .

As shown in FIG. 9 , in the upper and lower adjacent hollow wall panels of each prefabricated shear wall, the upper end surface of the lower hollow wall panel forms a horizontally arranged lower groove 8, and the lower end surface of the upper layer hollow wall panel forms a horizontally arranged lower groove 8. The upper groove 9 is arranged horizontally; the top ends of the two side walls 7 of the lower groove 8 and the bottom ends of the two side walls 6 of the upper groove 9 are connected to each other to form a horizontal seam. The lower groove 8 and the upper groove 9 are connected to form a transversely arranged through channel, and the above-mentioned dark beam 3 is arranged in the through channel.

In the upper and lower adjacent hollow wall panels of each prefabricated shear wall, the lower hollow wall panel 1 or the upper hollow wall panel 2 is pre-buried with a wire box 19 communicating with the line pipe 16, and the lower hollow wall A water supply point 25 is preset on the inner side wall of the panel 1 or the upper hollow wall panel 2 . The drawing holes 18 reserved for the wall panel are square holes or round holes.

During the construction of water and electricity pipelines, as shown in Figure 7, between two socket points on the same circuit in the same component, the construction process for pipeline connection is: completion of installation of lower hollow wall panels → opening → installation of junction boxes → laying pipelines (After the hidden beam reinforcement is laid, the line pipe is laid in the joint of the hollow wall panel) → the connection of the line duct box → the installation of the upper hollow wall panel. Where h is the height of the wire box from the ground. As shown in Figure 8, the horizontal pipe of the water supply pipe can be laid by using the horizontal joint of the hollow wall panel. The specific construction process is as follows: the installation of the lower hollow wall panel is completed → the laying of water pipes (after the laying of the hidden beams, the water pipes are laid in the joints of the hollow wall panel) → the installation of the upper hollow wall panel.

As shown in Figure 1, the present invention adopts a variety of connection forms different from the traditional structural system:

First, the prefabricated part of the shear wall adopts an evacuation design, and the evacuation part can be a round hole or a square hole. The vertical connection steel bars of the shear wall are arranged in the pumping holes, and the vertical steel bars are lapped in the form of binding. After the shear wall is evacuated, the weight of the wall panel can be greatly reduced, and the prefabricated components are easy to lift, as shown in Figure 2.

Secondly, the prefabricated shear wall hollow wall panel is set with two horizontal separation seams within the height range of one storey height, and the wall panel is divided into three sections along the height, namely the height of the window sill H1, the height of the window H2, and the height of the window top beam H3, as shown in the figure 3 shown. After the wall panels are separated along the height, a through structural dark beam is made along the wall panel seam position. Concealed beams can ensure the vertical integrity of the wall panels, and can solve the problem of water leakage in the horizontal joints of the wall panels. After the separation, the height of the wall panel is reduced and the quality is reduced, which is convenient for mass production in the factory. The position of the vertical joints of the prefabricated wall panels is determined according to the size of the bay and the depth of the building, and the width of the whole room is adopted to reduce the number of vertical joints on site.

Cantilever thin walls are set at the splices of prefabricated shear wall hollow wall panels and vertical cast-in-place nodes. This thin-walled structure can be used as an outer formwork when the node is poured and the formwork is supported on site. Simplify the on-site formwork support process, speed up the on-site construction progress, and the project can achieve the effect of no external frame as a whole. Figure 4, Figure 5.

As shown in Figure 5, at the intersection of the prefabricated shear wall hollow wall panel and the floor, a flange is set along the outside, and the flange height is the same as the thickness of the floor. This structural design method can solve the problem of formwork support on the outside of the floor when the floor is poured, simplify the on-site formwork support process, and speed up the on-site construction progress. At the same time, it can ensure that the appearance of the wall body is smooth after the floor slab is poured, and the construction quality of the in-situ pouring can be improved.

The specific installation process of the structural system of the present invention is as follows:

1) The vertical steel bars are bound and lapped. The vertical steel bars in the shear walls are bound and formed with the tie bars (stirrups). After forming, they are bound and overlapped with the reserved vertical steel bars on the lower layer according to the length of the steel bars.

2) The wall panel is installed and fixed. After the vertical steel bars are bound, the bottom prefabricated hollow wall panel is hoisted, so that the binding vertical steel bars pass through the reserved holes in the wall panel.

3) Concealed beam arrangement. After the bottom wall panel is installed in place, the concealed beam reinforcement cage is arranged at the joint position of the wall, so that the vertical reserved steel bars of the wall pass through the concealed beam reinforcement cage.

4) Layout of water and electricity pipelines. After the layout of hidden beams is completed, according to the layout of water and electricity lines, line pipes, junction boxes and water pipes are arranged along the vertical drilling holes of the wall panels and the horizontal passages of hidden beams.

5) The bottom wall slab is poured with concrete. After the pipeline is arranged, the concrete in the pumping hole and the hidden beam can be poured.

6), the construction of the middle and top wall panels, the construction process of the middle and top wall panels, repeat the process steps 2)-5) in the construction of the lower wall panels. After the top wall panels are installed, the subsequent floor construction will be carried out.

It should be understood that these embodiments are only used to illustrate the present invention more clearly, but not to limit the scope of the present invention. After reading the present invention, those skilled in the art will recognize various equivalent forms of the present invention. The modifications fall within the scope defined by the appended claims of this application.

Claims (8)

1. a prefabricated hollow wall panel shear wall structure, is characterized in that, comprises at least 4 prefabricated shear walls, and at least 4 prefabricated shear walls are connected successively to form a closed shear wall structure; The prefabricated shear wall includes a plurality of hollow wall panels arranged in sequence from bottom to top, and a horizontal joint (5) is formed at the connection of the two adjacent hollow wall plates at the top and bottom, and the wall at the horizontal joint (5) is formed. Concealed beams (3) arranged horizontally are arranged in the body; each hollow wall panel (20) is vertically provided with a plurality of wall panel reserved extraction holes (18), and the wall panels corresponding to the upper and lower adjacent two hollow wall panels The reserved extraction holes (18) are connected to each other, and vertical connectors (26) are arranged in the reserved extraction holes (18) of the butt-connected wall panels; The end of the hollow wall panel (20) is provided with a cantilevered thin wall (21) extending outward and a pre-embedded wall panel connector (23), and a cast-in-place node connector (22) is provided at the connection, which is horizontally adjacent The embedded wall panel connectors (23) of the two hollow wall panels (20) and between the embedded wall panel connectors (23) and the cast-in-place node connectors (22) are fixedly connected; (3) There is a channel for embedded line pipe (16) or/water pipe (17) along its length; Among the upper and lower adjacent hollow wall panels of each prefabricated shear wall, the upper end face of the lower hollow wall panel forms a horizontally arranged lower groove (8), and the lower end face of the upper layer hollow wall panel forms a horizontally arranged upper groove (9); The top ends of the two side walls (7) of the lower groove (8) and the bottom ends of the two side walls (6) of the upper groove (9) are butt-jointed to form a horizontal seam; The lower groove (8) and the upper groove (9) are butted to form a transversely arranged through channel, and the concealed beam (3) is arranged in the through channel. 2. The prefabricated hollow wall panel shear wall structure according to claim 1 is characterized in that, each prefabricated shear wall is assembled from 3-6 hollow wall panels, and at least one prefabricated shear wall is assembled A window installation area (12) is provided in the central position. 3. The prefabricated hollow wall panel shear wall structure according to claim 2, characterized in that, the single-sided shear wall provided with the window installation area (12) comprises a hollow wall panel (1) located at the lowest level, A hollow wall panel (11) on the uppermost layer, and two intermediate hollow wall panels (2, 10) arranged between a hollow wall panel (1) on the lowermost layer and a hollow wall panel (11) on the uppermost layer The window installation area (12) is enclosed between two middle hollow wall panels (2, 10), a hollow wall panel (1) on the lowermost layer, and a hollow wall panel (11) on the uppermost layer. 4. The prefabricated hollow wall panel shear wall structure according to any one of claims 1-3, characterized in that, the hidden beam (3) is a horizontally arranged stirrup, and the embedded wall panel connector ( 23) is a stirrup or a hook bar, and the cast-in-place node connector (22) is a stirrup. The prefabricated hollow wall panel shear wall structure according to claim 4, characterized in that, beam longitudinal bars (4) are provided in the concealed beam (3); the embedded wall panel connector (23) ) and the cast-in-place node connector (22) are provided with cast-in-place node longitudinal bars (24). 6. The prefabricated hollow wall panel shear wall structure according to one of claims 1-3 is characterized in that, in the upper and lower adjacent two hollow wall panels of each prefabricated shear wall, the lower hollow wall panel ( 1) or the upper-layer hollow wall panel (2) is pre-buried with a wire box (19) communicating with the line pipe (16), and the lower-layer hollow wall panel (1) or the upper-layer hollow wall panel (2) is on the inner side wall. The water supply point (25) is preset. 7. The assembled hollow wall panel shear wall structure according to any one of claims 1-3, characterized in that the wall panel reserved drawing holes (18) are square holes or round holes. 8. a construction method of the fabricated hollow wall panel shear wall structure as described in one of claims 1-7, is characterized in that, comprises the steps: S1, arranging vertical connecting pieces (26) to form vertical connecting ribs of the assembled hollow wall panel structure; S2, hoisting the lowermost hollow wall panel, so that the vertical connector (26) passes through the wall panel of the lowermost layer of the hollow wall panel reserved extraction holes (18); S3. The lowermost hollow wall panels are installed in place, so that the cantilevered thin walls (21) at the ends of two adjacent hollow wall panels are spliced vertically or horizontally, and the embedded wall panels at the ends of the two adjacent hollow wall panels are connected The parts (23) are fixedly connected; and a concealed beam (3) is arranged at the top of the hollow wall panel of the lowermost layer, and the vertical connecting piece (26) is passed through the concealed beam (3); S4. After the arrangement of the hidden beam (3) is completed, according to the layout of the water and electricity lines, the pre-buried line pipe (16), the junction box (19) or the water pipe ( 17); S5. The concrete in the lowermost hollow wall panel is poured in-situ. After the pipeline is arranged, the reserved pumping holes (18), hidden beams (3) and the concrete at the in-situ nodes of the adjacent two-sided fabricated shear walls are poured in the wall panel; S6, the construction of the middle and top hollow wall panels, during the construction process, repeat the process steps S2-S5 in the construction of the lower layer wall panels, and after the top layer of the hollow wall panels is poured, the subsequent floor construction is carried out.

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