CN215926370U

CN215926370U - Connecting structure of prefabricated wall body, upper-layer wall body and lower-layer wall body and wall body mold

Info

Publication number: CN215926370U
Application number: CN201922257843.0U
Authority: CN
Inventors: 朱凤起
Original assignee: Chengde Green Building Energy Saving Technology Co ltd
Current assignee: Chengde Green Building Energy Saving Technology Co ltd
Priority date: 2019-08-09
Filing date: 2019-12-16
Publication date: 2022-03-01
Anticipated expiration: 2029-12-16
Also published as: CN212248767U

Abstract

The utility model discloses a prefabricated wall body, which comprises a cast-in-place cavity at least constructed at the bottom of the prefabricated wall body; the prefabricated wall body is internally provided with vertical steel bars, the tops of the vertical steel bars extend out of the top of the prefabricated wall body, at least one part of the vertical steel bars is inclined along the length direction of the wall body, and the inclined degree enables the tops of the vertical steel bars to extend into a cast-in-place cavity of the prefabricated wall body on the upper layer during wall body assembly. The utility model also discloses an upper wall body and lower wall body connecting structure of the prefabricated wall body and a wall body mould.

Description

Connecting structure of prefabricated wall body, upper-layer wall body and lower-layer wall body and wall body mold

Technical Field

The utility model relates to the technical field of assembled walls, in particular to a connecting structure of a prefabricated wall and a connecting structure of an upper wall and a lower wall of the prefabricated wall.

Background

The prefabricated wall body is prefabricated through the mould in the mill and forms, and the inside has cast-in-place region and crisscross reinforcing bar of violently indulging. During construction, the prefabricated wall body is transported to a construction site, the prefabricated wall body is assembled, adjacent steel bars are connected in a binding mode and the like, and then a cast-in-place area is poured by concrete, so that construction operation is completed.

In the related art, when the lower-layer prefabricated wall body and the upper-layer prefabricated wall body are assembled, the problem of insufficient firmness of anchoring exists.

Therefore, the utility model is especially provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a prefabricated wall and a groove type connecting structure thereof, which improve the anchoring stability of the wall in the up-and-down assembling process.

In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a prefabricated wall, including a cast-in-place cavity at least configured at a bottom of the prefabricated wall; the prefabricated wall body is also internally provided with vertical steel bars, and is characterized in that,

the top of the vertical steel bar extends out of the top of the prefabricated wall body, at least one part of the vertical steel bar inclines along the length direction of the wall body, and the inclination degree enables the top of the vertical steel bar to extend into a cast-in-place cavity of the prefabricated wall body on the upper layer during wall body assembly.

Furthermore, a vertically arranged key groove is formed in the bottom of the cast-in-place cavity, and the top of the vertical steel bar extends into the key groove.

Further, the vertical steel bars are inclined in the prefabricated wall body or inclined after extending out of the top of the wall body.

Furthermore, the cast-in-place cavity is positioned at the bottom of the prefabricated wall body, and a concrete pouring channel is also constructed in the prefabricated wall body; the upper end of the concrete pouring channel is communicated to the top of the prefabricated wall body, and the lower end of the concrete pouring channel is communicated to the cast-in-place cavity.

Furthermore, the top of the prefabricated wall body is provided with an enlarged pouring area which is communicated with the concrete pouring channel.

Furthermore, the part of the vertical steel bar extending out of the top of the prefabricated wall body is a U-shaped steel bar.

Furthermore, a plurality of cast-in-place cavities are arranged at intervals in the length direction of the prefabricated wall body, wherein the bottoms of at least two adjacent cast-in-place cavities are communicated through the concrete through grooves.

In a second aspect, an embodiment of the present invention provides a connection structure of an upper wall and a lower wall, where the upper wall and the lower wall are both the prefabricated walls described above, and the connection structure includes:

the vertical steel bars of the lower wall body extend out of the top of the lower wall body and extend into the cast-in-situ cavity at the bottom of the upper wall body.

In a third aspect, an embodiment of the present invention further provides the wall mold for a prefabricated wall, including a mold frame, where a first module for constructing a cast-in-place cavity at the bottom of the wall is arranged in the mold frame, and the top of the cast-in-place cavity module is connected to a mold pipe for constructing a concrete pouring channel.

Further, the top of the mould pipe is provided with a second module for constructing an enlarged concrete entry area.

Furthermore, a third module for constructing a key groove on the inner wall of the cast-in-place cavity is arranged on the first module.

Further, the third module is a rubber strip independently arranged on the first module or the third module and the first module are integrally formed.

Compared with the prior art, the utility model has the following beneficial effects: the vertical muscle at least part of prefabricated wall body produces the slope for it can stretch into the cast-in-place cavity of upper wall body bottom when the assembly, the top of vertical muscle is owing to stretch into upper wall body inside like this, has increased the anchor of wall body junction, and the reinforcing bar keyway that sets up in the preferred embodiment has increased the combined area of the new and old concrete in cast-in-place region, also can play the effect that increases the anchor. And meanwhile, the key grooves for accommodating the steel bars are convenient for aligning the upper and lower layers of wall bodies during assembly.

Drawings

FIG. 1 is a front view of a prefabricated wall according to one embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a schematic view of the position of a cast-in-place cavity and a groove at the bottom of the prefabricated wall body in FIG. 1;

FIG. 5 is an enlarged schematic view of the location of the cast-in-place cavity and the groove of FIG. 4;

FIG. 6 is a schematic perspective view of the prefabricated wall of FIG. 1;

fig. 7 is a schematic view showing the arrangement structure of the reinforcing bars in the prefabricated wall body in fig. 1 (i.e., a perspective view of fig. 1);

FIG. 8 is a side view of the prefabricated wall body of FIG. 1 assembled and connected as an upper and a lower wall bodies (a floor slab is omitted);

fig. 9 is a schematic perspective view of the prefabricated wall body of fig. 1 as an upper and lower wall body when assembled and connected (a floor slab is omitted);

FIG. 10 is an enlarged partial schematic view of the junction of FIG. 9 (floor slab omitted);

FIG. 11 is a perspective view of the prefabricated wall of FIG. 1 assembled together as an upper and lower wall;

FIG. 12 is an enlarged view of a portion of the upper and lower wall sections of FIG. 11;

FIG. 13 is a schematic structural view of U-shaped vertical reinforcing bars;

FIG. 14 is a schematic perspective view of a prefabricated wall (without an insulating outer wall) according to another embodiment of the present invention;

FIG. 15 is a partially enlarged view of the prefabricated wall shown in FIG. 14, which is used as a joint for assembling and connecting the upper and lower walls;

fig. 16 is a schematic structural diagram of a prefabricated wall (inner wall) provided by another embodiment of the utility model as an assembled connection between an upper layer wall and a lower layer wall;

FIG. 17 is an enlarged, fragmentary view of the upper and lower wall joints of FIG. 16;

fig. 18 is a schematic structural view of a prefabricated wall according to another embodiment of the present invention (the steel bars are extended and then tilted);

FIG. 19 is an enlarged view of a portion of the upper and lower wall joints of FIG. 18;

FIG. 20 is a schematic view of an enlarged casting area;

fig. 21 is a front view of a prefabricated wall (inner wall) according to a modification of the present invention;

FIG. 22 is a top view of FIG. 21;

FIG. 23 is a bottom view of FIG. 21;

FIG. 24 is a schematic view of the position and structure of a cast-in-place cavity at the bottom of the prefabricated wall body in FIG. 21;

FIG. 25 is a perspective view of the prefabricated wall of FIG. 21;

fig. 26 is a schematic perspective view of a prefabricated wall (with thermal insulation) according to another modification of the present invention;

FIG. 27 is a perspective view of the prefabricated wall (insulated exterior wall) in FIG. 26 in elevation;

FIG. 28 is a schematic perspective view of the prefabricated wall shown in FIG. 26 assembled and connected as an upper wall and a lower wall;

FIG. 29 is an enlarged partial schematic view of the connection locations of FIG. 28 (with the floor omitted);

FIG. 30 is an elevated perspective view of the upper and lower walls of FIG. 26 shown connected together;

FIG. 31 is an enlarged, fragmentary view of the junction of FIG. 30;

FIG. 32 is a schematic perspective view of a prefabricated wall (without thermal insulation) according to another embodiment of the present invention;

FIG. 33 is a schematic perspective view of the prefabricated wall shown in FIG. 32 assembled and connected as an upper wall and a lower wall;

fig. 34 is a partially enlarged view of the junction of fig. 33.

Fig. 35 is a schematic structural view of a prefabricated wall according to another embodiment of the present invention (the steel bars are extended and then tilted);

FIG. 36 is a perspective view of FIG. 35;

fig. 37 is a partially enlarged perspective view illustrating a coupling portion of the upper and lower walls of fig. 35.

Fig. 38 is a schematic structural view of U-shaped vertical rebars;

FIG. 39 is a schematic view of an enlarged casting area;

FIG. 40 is a schematic side view of a first type of wall attachment structure for upper and lower floors (interior walls);

FIG. 41 is a schematic side view of a first upper and lower wall attachment structure (exterior wall);

FIG. 42 is a side view of a second type of wall attachment structure for upper and lower levels (interior walls);

FIG. 43 is a schematic side view of a second upper and lower wall attachment structure (exterior wall);

FIG. 44 is a side view of a third upper and lower wall attachment structure (interior wall);

FIG. 45 is a schematic side view of a third upper and lower wall attachment structure (exterior wall);

FIG. 46 is a side view of a fourth upper and lower wall attachment structure (interior wall);

FIG. 47 is a side view of a fourth upper and lower wall attachment structure (exterior wall);

FIG. 48 is a schematic side view of a fifth upper and lower wall attachment structure (interior wall);

FIG. 49 is a schematic side view of a fifth upper and lower wall attachment structure (exterior wall);

FIG. 50 is a schematic side view of a sixth upper and lower wall attachment structure (interior wall);

FIG. 51 is a schematic side view of a sixth upper and lower wall attachment structure (exterior wall);

FIG. 52 is a schematic structural view of a corner wall;

FIG. 53 is a schematic side view of a concrete interior (inner wall) with reinforcing bars connected to the upper and lower layers of a corner wall;

FIG. 54 is a schematic side view of the reinforcement bars in the concrete interior (exterior) wall when the corner wall is connected to the upper and lower layers;

FIG. 55 is a schematic side view of the exposed reinforcing bars (inner wall) of a corner wall when the upper and lower layers are connected;

FIG. 56 is a schematic side view of the reinforcement bar exposed (exterior wall) when the upper and lower layers of the corner wall are connected;

FIG. 57 is a schematic structural view of an inner wall mold of a prefabricated wall;

FIG. 58 is a schematic structural view of a prefabricated wall exterior wall mold;

FIG. 59 is a schematic structural view of a third module integrated with the first module;

FIG. 60 is a schematic view showing the structure of the inner wall bottom in which the longitudinal reinforcing bars are folded back;

FIG. 61 is a schematic view of the structure of the inner wall with the annular stirrup and the longitudinal reinforcement folded back at the bottom;

FIG. 62 is a schematic view of the structure of the folded longitudinal reinforcement at the bottom of the outer wall;

FIG. 63 is a schematic structural view of the positional relationship between the mold and the reinforcing bars when the reinforcing bars at the bottom of the wall are folded back;

FIG. 64 is a schematic view of a mold with side dams;

FIG. 65 is a schematic view of a wall structure with a viewing window;

in the figure: 1-prefabricating a wall body; 2-transverse steel bars; 3-vertical steel bars; 4-casting a cavity in situ; 5-pouring concrete into the channel; 6-concrete through groove; 7-a groove; 8-pouring a groove; 9-a heat-insulating layer; 101-lower wall; 102-upper wall; 103-floor slab; 301-vertical steel bars of the lower wall; 302-vertical reinforcing steel bars of an upper layer wall body; 401-front inner wall; 402-rear inner wall; 403-side inner wall.

Detailed Description

The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments shown in the drawings. It should be understood that these embodiments are described only to enable those skilled in the art to better understand and to implement the present invention, and are not intended to limit the scope of the present invention in any way.

< example 1>

The prefabricated wall body 1 provided by the embodiment of the utility model is prefabricated by concrete, and a plurality of transverse and vertical staggered reinforcing steel bars are distributed in the wall body to form a latticed distribution structure. It should be noted that the prefabricated wall body may be an internal wall body (as shown in fig. 16-17), or may be an external wall body, and may be an external wall body having an insulating layer 9 on the outer side of the prefabricated wall body 1 (as shown in fig. 1-7), or an external wall body without an insulating layer (as shown in fig. 14-15). The prefabricated wall body can be a linear wall body, also can be a T-shaped wall body, and L-shaped walls and the like are positioned at corners.

Referring to fig. 1-7, the transverse reinforcing bars 2 in the prefabricated wall 1 transversely penetrate through the concrete portion in the wall and extend out from both sides of the wall. When the prefabricated wall bodies 1 which are adjacent transversely are butted, the parts of the transverse steel bars 2 extending out of the side surfaces of the wall bodies can be bound and fixed. The parts of the transverse reinforcing steel bars 2 extending out of the side face of the wall body can be U-shaped reinforcing steel bars, namely two adjacent transverse reinforcing steel bars in the wall body are connected together through arc-shaped reinforcing steel bars after extending out, and the shear strength of the connecting part of the wall body is improved.

The vertical steel bars 3 of the prefabricated wall 1 extend upwards from the bottom of the wall and penetrate the top of the wall, and the parts penetrating the top of the wall can also adopt U-shaped steel bars (as shown in fig. 6 and 13).

According to the embodiment of the disclosure, a cast-in-place cavity 4 is constructed at the bottom in the prefabricated wall body 1, a concrete pouring channel 5 is communicated above the cast-in-place cavity 4, and the concrete pouring channel 5 is communicated to the top of the wall body. When the cast-in-place operation is performed, the prefabricated wall body is assembled, then concrete is poured into the concrete pouring channel 5, the concrete enters the cast-in-place cavity 4, and the cast-in-place cavity 4 and the concrete pouring channel 5 are filled with the concrete, so that the cast-in-place operation is completed. The cast-in-place cavity 4 and the concrete pouring channel 5 are both prepared in a factory by reserving corresponding vacant positions through a mould of the prefabricated wall body 1. The concrete cast-in-place cavities 4 and the corresponding concrete pouring channels 5 can be arranged in multiple groups at intervals in the length direction of the prefabricated wall body 1.

Of course, in other embodiments, the cast-in-place cavity 4 is not located at the bottom of the prefabricated wall, but penetrates through the whole prefabricated wall from bottom to top, so as to form a large cavity which is communicated from bottom to top.

In some embodiments, a plurality of cast-in-place cavities 4 are arranged at intervals in the length direction of the prefabricated wall body, wherein the bottoms of at least two adjacent cast-in-place cavities 4 are communicated through the concrete through grooves 6, so that when the cast-in-place cavities on two sides are poured, water leaks in a mode of combining concrete flowing and cast-in-place areas, and mortar is replaced for leveling.

The shape of the cast-in-place cavity 4 may vary, for example, in some embodiments, the cast-in-place cavity 4 is constructed from a cube mould during the manufacture of the prefabricated wall, leaving a cast-in-place cavity that is substantially cubic (as shown on the upper right of fig. 5). Of course, the mold may also be a mold box with a front and a rear plane and a side plane having an arc surface, such that the front and rear inner walls of the cast-in-place cavity formed in this way are planes and the side inner walls are arc surfaces (as shown in the lower left side of fig. 5). As previously described, the interior walls of the cast-in-place cavity 4 may generally include a front interior wall 401, a rear interior wall 402, and side interior walls 403 on either side. The front inner wall 401 and the rear inner wall 402 are parallel to the front and rear panels of the prefabricated wall 1, and the side inner walls 403 on both sides are parallel to the side surfaces of the wall. In some embodiments, a groove 7 for allowing the lower vertical steel bar to extend into is formed on at least one side of the front inner wall 401 and the rear inner wall 402, and the cross section of the groove 7 may be T-shaped, concave, semicircular, arc-shaped or other geometric shapes. For example, the grooves 7 may be vertically arranged on the front and rear inner walls of the cast-in-place cavity 4, extending from the bottom of the cast-in-place cavity 4 to the top of the cast-in-place cavity 4 of the wall (when there is also a concrete pouring channel 5 above the cast-in-place cavity 4), or the grooves 7 may only extend in the cast-in-place cavity to a length that allows the lower vertical steel bars to penetrate (when the cast-in-place cavity 4 is a large cavity that penetrates the wall from top to bottom). In addition, the grooves 7 may be distributed in multiple groups along the length (i.e., transverse) of the wall for accommodating more reinforcing bars.

As shown in fig. 65, an observation window 11 is further provided on the vertical surface of the prefabricated wall body, the observation window 11 is communicated with the cast-in-place cavity 4 inside the wall body, transparent plate-shaped materials (not shown in the figure) such as acrylic plates are mounted on the observation window 11 and used for observing the concrete pouring condition in the wall body, and after the concrete pouring is finished, the transparent plates can be removed and reused on the observation windows of other wall bodies.

In some embodiments, the portions of the vertical steel bars 3 extending from the prefabricated wall 1 are U-shaped steel bars (as shown in fig. 6 and 13), that is, multiple groups of vertical steel bars are distributed on the prefabricated wall, where each group of vertical steel bars includes two vertical steel bars, the two vertical steel bars are parallel in the thickness direction of the wall, and the planes of the two vertical steel bars are parallel to the side surfaces of the prefabricated wall 1. At this moment, the parts of the two vertical steel bars extending out of the top of the wall body are connected together through arc-shaped bars to form U-shaped steel bars, wherein grooves 7 (shown in figure 10) corresponding to each steel bar in the U-shaped steel bars extending out of the lower wall body are formed in the front inner wall 401 and the rear inner wall 402 in the cast-in-place cavity 4 at the bottom of the upper prefabricated wall body, so that the two steel bars extending out of the lower wall body are accommodated simultaneously, and the anchoring strength is further improved. In addition, the arc-shaped connection part of the U-shaped rib is also beneficial to increasing the combination area of the steel bar and the cast-in-place concrete in the cast-in-place cavity, so that the connection strength of the upper wall body connection part and the lower wall body connection part is increased.

The embodiment of the present disclosure provides a connection structure of the above prefabricated wall, as described above, the prefabricated wall in this embodiment may be an upper wall or a lower wall in the wall assembling process, and the middle is a floor slab 103. When used as the lower wall 101, the part of the vertical steel bar 301 of the lower wall extending from the top extends into the groove 7 at the bottom of the upper wall 102, as shown in fig. 8-12. Accordingly, when used as the upper wall 102, the groove 7 of the cast-in-place area at the bottom of the prefabricated wall is provided for the lower wall vertical steel bar 301 extending out of the top of the lower wall 101. The vertical steel bars 302 of the upper wall are arranged outside the edge of the groove 7. Thereby realizing the assembled connection of the upper wall 102 and the lower wall 101. The groove type connecting structure between the upper wall 102 and the lower wall 101 can improve the assembling accuracy and the assembling speed by taking the groove 7 as a reference when the steel bars are butted, and in addition, the groove 7 forms a depression relative to the inner wall of the cast-in-place cavity 4, so that the area of the inner wall of the cast-in-place cavity 4 is increased, the combination area between new concrete and old concrete is increased after the cast-in-place concrete enters the cast-in-place cavity 4, and the strength of a cast-in-place part is improved.

Furthermore, according to an embodiment of the utility model, at least a majority of the vertical reinforcing bars 3 are located in the concrete inside the wall. For example, the bottom of the vertical reinforcing steel bar 3 is located in the concrete at the outer edge of the cast-in-place cavity 4 and extends upwards all the way, and at this time, if the vertical reinforcing steel bar 4 is an absolutely vertical reinforcing steel bar as in the related art, the vertical reinforcing steel bar cannot enter the reinforcing steel bar groove at the upper layer. For this reason, in the embodiment of the present invention, when the vertical steel bars 3 are arranged, they are at least partially inclined in the length direction (i.e. in the transverse direction) of the wall body (as shown in fig. 7), and the inclination degree is such that the vertical steel bars can enter the steel bar grooves at the bottom of the upper wall body after protruding from the top of the prefabricated wall body.

In some embodiments, as shown in fig. 7, the vertical rebars 3 are tilted from the inside of the prefabricated wall 1, for example, the vertical rebars 3 on both sides of the cast-in-place cavity 4 are tilted toward the top ends of the rebars approaching each other, and the tilt is maintained until the vertical rebars 3 protrude from the top of the prefabricated wall 1, and the tilt is ensured to allow the protruding parts of the vertical rebars 3 to enter the rebar grooves 7 at the bottom end of the upper-layer wall.

In other embodiments, the vertical reinforcing bars 3 can be kept in a vertical state all the time inside the prefabricated wall 1, and the vertical reinforcing bars 3 are inclined towards the reinforcing bar grooves 7 at the bottom of the upper-layer wall after extending out of the top of the prefabricated wall 1. For example, as shown in fig. 18 to 19, after two sets of vertical rebars 3 respectively located at two sides of the cast-in-place cavity 4 extend from the top of the wall, they are inclined toward the direction approaching each other, and when the inclination is large enough for the vertical rebars 3 to continue to extend vertically upward, they can enter the rebar groove 7 at the bottom of the upper wall, and at this time, the vertical rebars 3 continue to extend vertically upward until they extend into the rebar groove 7 at the bottom of the upper wall.

Accordingly, the concrete pouring channel 5 has various shapes, and in this embodiment, the concrete pouring channel 5 is a through hole type, and after the concrete pouring channel 5 extends from the top of the prefabricated wall 1, if the cash area is too small, an enlarged cast-in-place area can be provided at the top of the wall, for example, in this embodiment, a horizontally opened pouring groove 8 is provided at the top of the wall, and the pouring groove 8 is communicated with the upper end of each concrete pouring channel 5 (as shown in fig. 20). Of course, in other embodiments, one or more pouring grooves with different shapes may be formed. The pouring groove can be full-length and segmented, one end of the pouring groove can be opened, the two ends of the pouring groove can be opened or not, and the pouring groove can be a figure formed by combining any set figures such as trapezoids, squares, semi-circles, semi-ellipses and geometric figures. Can be used for inner walls, external walls with heat insulation and external walls without heat insulation.

< modification 1>

Compared with the prefabricated wall in the embodiment, the prefabricated wall has the main difference that no groove is formed in the inner wall of the cast-in-place cavity at the bottom, and when the upper and lower wall bodies are butted, the vertical steel bars at the top of the lower wall body directly extend into the cast-in-place cavity at the bottom of the upper wall body, so that a pure cavity type connecting structure is formed. Hereinafter, such a wall will be described in detail.

Embodiments of the present invention provide a prefabricated wall body, which is suitable for use as an inner wall body (see fig. 21 to 25), an outer wall body (including an outer wall (see fig. 26 to 27) including an insulating layer 9 and an outer wall (see fig. 32) including no insulating layer), and can be used as a straight wall body or a corner wall body (see fig. T-shaped wall or L-shaped wall).

Referring to fig. 21 to 25, 26 to 27, 32 and 38, the prefabricated wall body 1 is formed by casting concrete. When the prefabricated wall body 1 is generated in a factory, the four-side die is firstly adopted to lift the die frame, and the inner modules with various shapes and structures can be designed in the die frame, so that various cavity structures are formed in the prefabricated wall body 1 after pouring.

According to an embodiment of the present disclosure, the prefabricated wall 1 is constructed with a cast-in-place cavity 4 at least at the bottom. For example, the cast-in-place cavity 4 may be located only at the bottom of the prefabricated wall 1 (forming a cast-in-place bottom cavity 4b), and a concrete pouring channel 5 constructed in the prefabricated wall 1 is communicated above the cast-in-place cavity 4, and the concrete pouring channel 5 is communicated to the top of the prefabricated wall 1. Of course, the cast-in-place cavity 4 may completely penetrate from the bottom of the prefabricated wall 1 to the top of the prefabricated wall 1 (forming a through cast-in-place cavity 4a), so as to form a cavity structure with a substantially constant cross section, which is equivalent to the whole cast-in-place cavity having the function of a concrete pouring channel at the same time.

The shape and configuration of the cast-in-place cavity 4 can be varied, and this can be achieved by designing different shaped modules for the prefabricated wall 1 during production. For example, the cast-in-place cavity 4 may be cubic, oval, racetrack (i.e., straight on the front and back sides and curved on the sides), or other geometric shapes.

The concrete pouring channel 5 may have various shapes, for example, it may be a cylindrical through hole leading from the top of the prefabricated wall 1 to the top of the cast-in-place cavity 4. Of course, other shapes and configurations may be used.

In some embodiments, the top of the prefabricated wall 1 has an enlarged casting area 10, and the enlarged casting area 10 is communicated with the concrete pouring channel 5 for increasing the fluidity of the concrete poured on the top of the prefabricated wall. The configuration of the enlarged casting area 10 may be various, for example, the enlarged casting area may be segmented, may have one end open, both ends open or none open, and may be any shape of a combination of geometric figures and any combination of figures such as trapezoid, square, semicircle, and semiellipse. Can be used for inner walls, external walls with heat insulation and external walls without heat insulation.

Further, a plurality of cast-in-place cavities 4 are arranged at intervals in the length direction of the prefabricated wall 1, wherein the bottoms of at least two adjacent cast-in-place cavities 4 are communicated through concrete through grooves 5 (shown in fig. 39). Therefore, when the cast-in-place cavities on the two sides are poured, water is leaked in a mode of combining concrete flowing and cast-in-place areas, and mortar leveling is replaced.

And a plurality of transverse reinforcing steel bars 2 and a plurality of vertical reinforcing steel bars 3 which are staggered transversely and vertically are arranged in the prefabricated wall body 1, so that a latticed structure is formed. The transverse reinforcing bars 2 are positioned in the concrete part of the prefabricated wall body 1, and of course, if the transverse reinforcing bars 2 meet the vacant positions inside the wall body such as the cast-in-place cavity 4, the vacant positions can be bypassed or directly penetrated. And the transverse steel bars 2 extend out of two sides of the prefabricated wall body 1 respectively and are used for binding and butting with the transverse steel bars 2 of the prefabricated wall body 1 adjacent to the side surface. The part of the transverse steel bar 2 exposed out of the prefabricated wall body can be a U-shaped steel bar, and the plane where the U-shaped steel bar is located is parallel to the top surface of the prefabricated wall body. The U-shaped steel bar is beneficial to increasing the combination area of the transverse connection point and the concrete, so that the connection strength and the shearing resistance are improved.

The following describes the arrangement of the vertical reinforcing bars 3 in the embodiment of the present disclosure. The function of the vertical reinforcing steel bars 3 is to be arranged in the concrete part when the prefabricated wall body 1 is produced and manufactured, so that the overall strength of the prefabricated wall body 1 is enhanced. On the other hand, the top of the vertical steel bar 3 also extends out from the top of the prefabricated wall body 1 for a certain distance, and the extended part of the section is used for being connected with the bottom of the upper-layer wall body when the upper-layer wall body and the lower-layer wall body are assembled.

According to the embodiment of the disclosure, the top of the vertical steel bar 3 can be inserted into the cast-in-place cavity at the bottom of the upper wall body, so that the cast-in-place concrete and the vertical steel bar inserted into the lower layer of steel bar are wrapped when pouring is carried out, and the anchoring strength of the upper and lower wall body connecting points is increased. However, the vertical steel bars are kept in the absolutely vertical arrangement and can be always kept in the concrete part of the prefabricated wall body, and the vertical steel bars cannot enter the cast-in-place cavity of the upper-layer wall body. In order to solve this technical problem, according to the embodiment of the present disclosure, the bottom of the vertical reinforcing bars 3 is disposed within the concrete portion of the prefabricated wall body 1, ensuring the reinforcement of the foundation, while the vertical reinforcing bars 3 are at least partially inclined at the upwardly extending portion. The inclined direction is towards the inner side of the orthographic projection area of the cast-in-place cavity 4 in the height direction of the wall body. The orthographic projection area 91 of the cast-in-place cavity in the height direction of the wall body refers to a space area formed after the cross section of the cast-in-place cavity in the horizontal direction (such as the top surface and the bottom surface of the cast-in-place cavity in the vertical surface state of the wall body) is projected in the height direction of the wall body. Taking the square box type cast-in-place cavity 4 in the embodiment of the present disclosure as an example, an orthographic projection area 91 of the square box type cast-in-place cavity in the height direction of the wall body is a rectangular bottom surface of the cast-in-place cavity 4 which projects upward, a projection track forms a space which vertically penetrates through the wall body, and the cavity is the aforementioned orthographic projection area 91. Correspondingly, the inclination direction of the vertical steel bars 7 faces the inner side of the orthographic projection area 9, namely the vertical steel bars 7 are gradually close to the center of the orthographic projection area 91, and the inclination degree ensures that the top of the vertical steel bars 3 can be inserted into the cast-in-place cavity 4 at the bottom of the upper-layer wall body after extending out.

Under the condition that the above conditions are met, the inclination modes of the vertical reinforcing steel bars 3 can be various, according to the embodiment of the disclosure, in some embodiments, the vertical reinforcing steel bars 3 can be inclined in the wall, in other embodiments, the vertical reinforcing steel bars 3 are always vertical in the wall, and the inclination is generated after the vertical reinforcing steel bars are extended out of the wall.

In the case where the vertical reinforcing bars 7 are inclined within the wall, the bottom of the vertical reinforcing bars 3 may be located near the outer edge of the cast-in-place cavity. The part that vertical muscle 3 in this embodiment stretches out from prefabricated wall body is U type reinforcing bar, links together two vertical reinforcing bars 3a that are close to the wall body front and back side respectively, 3b through one section arc reinforcing bar promptly. The two

vertical steel bars

3a and 3b are positioned in the concrete part close to the outer edge of the cast-in-place cavity at the bottom of the wall body, one vertical steel bar 3a is close to the rear side of the wall body, and the other vertical steel bar 3b is close to the front side of the wall body. The planes of the two

vertical steel bars

3a and 3b are vertical to the vertical surface (namely the plate surface) of the prefabricated wall. In order to enable the U-shaped reinforcing

steel bars

3a and 3b to enter the cast-in-place cavity 4 at the bottom of the upper-layer wall body after extending out, the two vertical reinforcing

steel bars

3a and 3b are inclined and gathered in the thickness direction of the wall body in the upward extending process, and meanwhile, the two vertical reinforcing

steel bars

3a and 3b are inclined towards the projection area where the cast-in-place cavity 4 is located in the length direction of the wall body, so that after the vertical reinforcing

steel bars

3a and 3b extend out of the top of the prefabricated wall body 1, the distance between the two vertical reinforcing

steel bars

3a and 3b in the thickness direction of the wall body is narrowed, and the two vertical reinforcing steel bars can be inserted into the cast-in-place cavity at the upper layer. Compared with two independent steel bars, the combination area of the U-shaped steel bar and cast-in-place concrete is larger after the U-shaped steel bar is inserted, and the anchoring strength is improved.

As shown in fig. 35-37, in the case that the vertical steel bars 3 are vertical inside the prefabricated wall and do not tilt until the top of the prefabricated wall is extended, the vertical steel bars 3 may also be U-shaped steel bars, that is, a section of arc-shaped steel bar connects two

vertical steel bars

3a and 3b close to the front and rear sides of the wall. At this moment, after the two vertical reinforcing

steel bars

3a and 3b extend out, the two vertical reinforcing steel bars incline towards the inner side of the projection area of the cast-in-place cavity 2 in the height direction, and when the top ends of the two vertical reinforcing

steel bars

3a and 3b are positioned below the cast-in-place cavity at the bottom of the upper wall 102, the two vertical reinforcing steel bars continue to extend vertically upwards and are inserted into the cast-in-place cavity at the bottom of the upper wall.

The length of the vertical steel bar 3 inserted into the cast-in-place cavity 4 can be adjusted according to actual needs. According to the embodiment of the present disclosure, when the cast-in-place cavity 4 is only located at the bottom of the prefabricated wall body 1, the top end of the vertical reinforcing steel bar 3 always jacks the top of the cast-in-place cavity 4. Furthermore, in some embodiments, the perimeter of the vertical rebars 3 is in contact with the inner wall of the cast-in-place cavity 4. Taking the U-shaped vertical steel bar 3 as an example, the front and rear vertical steel bars 7 can be respectively contacted with the front inner wall and the rear inner wall of the cast-in-place cavity 4, so that the vertical steel bar 3 can generate friction with the inner wall of the cast-in-place cavity in the butt joint process of the upper wall 102 and the lower wall 101, and the shaking of the upper wall 102 is reduced in the hoisting and falling process of the upper wall 102. And the inner surface of the cast-in-place cavity 4 can be a smooth surface, so that the cast-in-place cavity does not have too many complex structures, the precision requirement in production and processing of the prefabricated wall body 1 can be reduced, and the situation that the structure is too fine and the processing precision does not meet the standard, and the vertical steel bars 3 are inserted to generate structural obstacles is prevented.

As shown in fig. 28 to 31, 33, 34, and 17, the embodiment of the present disclosure further provides a connection structure when the prefabricated wall is used to connect an upper wall and a lower wall, and a floor 103 is located between the upper wall 102 and the lower wall 101. As mentioned above, the prefabricated wall body can be used as an upper wall body or a lower wall body, when the upper wall body and the lower wall body are both the prefabricated wall bodies, the lower vertical steel bars 301 extending out of the top of the lower wall body 101 are inserted into the cast-in-place cavity 4 at the bottom of the upper wall body 101, and the insertion length can be up to the top of the cast-in-place cavity 2 (when a concrete pouring channel is arranged above the cast-in-place cavity), or other situations. The inserted lower-layer vertical steel bars 302 can be U-shaped steel bars, and the front and rear steel bars of the U-shaped steel bars can be in contact with the inner wall of the cast-in-place cavity 4. During assembly, when the vertical surface of the lower wall body 101 is fixed, the upper wall body 102 is hoisted and slowly falls down, so that the lower vertical steel bars 301 of the lower wall body 101 are inserted into the cast-in-place cavity 4 at the bottom of the upper wall body 102, and then concrete is cast in place and the like. And the upper-layer vertical ribs 302 on the top of the upper-layer wall body 102 are continuously assembled with the wall body on the upper layer.

< connection mode of upper and lower walls >

By combining the above embodiments and modifications, the connection structure of the upper and lower walls according to the embodiments of the present invention is briefly summarized below with a side view.

The first connecting structure is that in the bottom cast-in-place cavity of the wall body, the top steel bars of the lower wall body are connected with the bottom steel bars of the upper wall body, and fig. 40 and 41 respectively show the inner wall and the outer wall adopting the connecting structure.

The difference between the second connection structure and the first connection structure is that the cast-in-place cavity is a through-long cavity vertically penetrating through the prefabricated wall body, and fig. 42 and 43 respectively show an inner wall and an outer wall adopting the connection structure.

The difference between the third connection structure and the first connection structure is that no steel bar is arranged in the cast-in-place cavity at the bottom of the upper wall body, and the steel bar is arranged in concrete. Fig. 44 and 45 show an inner wall and an outer wall, respectively, using such a connection structure.

The difference between the fourth connecting structure and the third connecting structure is that the cast-in-place cavity is a through long cavity which vertically penetrates through the prefabricated wall body. Fig. 46 and 47 show an inner wall and an outer wall, respectively, using such a connection structure.

The difference between the fifth connecting structure and the first connecting structure is that the steel bars in the cast-in-place cavity at the bottom of the upper wall body are in the exposed bar grooves. Fig. 48 and 49 show an inner wall and an outer wall, respectively, using such a connection structure.

The difference between the sixth connecting structure and the fifth connecting structure is that the cast-in-place cavity is a through long cavity which vertically penetrates through the prefabricated wall body. Fig. 50 and 51 show an inner wall and an outer wall, respectively, using such a connection structure.

< connecting mode of upper and lower layers of corner wall body >

The corner wall refers to a wall forming a 90 ° corner at the edge or the middle of a linear wall, such as an L-shaped wall and a T-shaped wall. As shown in fig. 52, the cast-in-place cavity at the bottom of the corner wall comprises a first corner cavity 4001 and a second corner cavity 4002 which are perpendicular to each other. The recesses described in the previous embodiments may also be provided in the first corner cavity 4001 and the second corner cavity 4002.

When the upper and lower walls are connected, the bottom longitudinal rib 1001 of the upper wall 102 may be located in the concrete (as shown in fig. 53-54, an inner wall and an outer wall, respectively), or the bottom longitudinal rib 1001 of the upper wall 102 may be exposed in the cast-in-place cavity (as shown in fig. 55-56, an inner wall and an outer wall, respectively).

< wall mold >

As shown in fig. 57, the present embodiment further provides the wall mold for prefabricated walls, which includes a rectangular mold frame 8001, a first block 8002 for constructing a cast-in-place cavity at the bottom of the wall is disposed in the mold frame 8001, and a mold pipe 8003 for constructing a concrete pouring channel is connected to the top of the cast-in-place cavity block 8002.

The mould pipe 8003 can be specifically a corrugated pipe, the corrugation of the corrugated pipe can be embedded with concrete, so that the strength of the concrete is improved on one hand, and the corrugated pipe can be retained in the concrete when the mould is removed on the other hand, and a process of removing the mould pipe is omitted.

Further, a second block 8004 for constructing an enlarged concrete entry area is provided on the top of the block pipe 8003.

Further, the front and/or back of the first block 8002 is provided with a third block 8005 for constructing a keyway on the inner wall of the cast-in-place cavity. The third block 8005 may be a bar having a trapezoidal cross section.

Further, the third block 8005 is a rubber strip separately provided on the first block 8002 or the third block 8005 is integrally formed with the first block 8002.

Fig. 58 is a schematic view of an exterior wall mold with one more layer of exterior wall mold frame 8006 and insulation board 8007 as compared to an interior wall mold.

As shown in fig. 59, the first block 8002 may be integrally formed with the third block 8005, where the third block 8005 is a hollow, grooved bar. The longitudinal reinforcing steel bar passes through the cavity of the third module.

As shown in fig. 64, a side baffle 12 may be further disposed on the cast-in-place cavity module, the side baffle 12 is connected to the cast-in-place cavity module through a rotating shaft 13, an inner side of the side baffle 12 is a long strip-shaped opening (not shown in the figure), the side baffle 12 is closed during casting, and after the side baffle 12 is opened, the long strip-shaped opening may be used for discharging the reinforcing steel bars.

< closure of longitudinal reinforcement at bottom of wall by folding back >

In some variations, the longitudinal reinforcement 6001 at the bottom of the wall may be folded back and closed to form a U-shaped reinforcement, as shown in fig. 60 for the bottom of the inner wall and fig. 62 for the bottom of the outer wall. Further, around the folded back longitudinal rebar, may be tied by a hoop 6002. The mould used when the bottom bar is folded back is as shown in figure 63 where the third block 8005 is a recess formed integrally with the first block 8002 and the folded back bottom bar is located within the third block 8005.

The present invention has been described in detail with reference to specific embodiments, which are provided to assist in understanding the core concepts of the present invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. A prefabricated wall comprises a cast-in-place cavity at least constructed at the bottom of the prefabricated wall; the prefabricated wall body is also internally provided with vertical steel bars, and is characterized in that,

2. The prefabricated wall of claim 1, wherein a vertically-arranged key slot is formed in the bottom of the cast-in-place cavity, and the top of the vertical steel bar extends into the key slot.

3. The prefabricated wall of claim 1, wherein the vertical rebars are inclined just inside the prefabricated wall or are inclined after protruding from the top of the wall.

4. The prefabricated wall body of claim 1, wherein the cast-in-place cavity is located at the bottom of the prefabricated wall body, and a concrete pouring channel is further formed in the prefabricated wall body; the upper end of the concrete pouring channel is communicated to the top of the prefabricated wall body, and the lower end of the concrete pouring channel is communicated to the cast-in-place cavity.

5. The prefabricated wall of claim 4, wherein the prefabricated wall has an enlarged casting area on the top thereof, the enlarged casting area being in communication with the concrete pouring channel.

6. The prefabricated wall of claim 1, wherein the portion of the vertical steel bars extending from the top of the prefabricated wall is a U-shaped steel bar.

7. The prefabricated wall body of claim 1, wherein a plurality of the cast-in-place cavities are arranged at intervals in the length direction of the prefabricated wall body, and the bottoms of at least two adjacent cast-in-place cavities are communicated through the concrete through grooves.

8. The prefabricated wall body of claim 1, wherein an observation window is further arranged on the vertical face of the prefabricated wall body and used for observing the concrete pouring condition in the cast-in-place cavity.

9. A connecting structure of an upper wall and a lower wall, both of which are the prefabricated walls of claim 1, the connecting structure comprising:

10. The connection structure of claim 9, wherein the cast-in-place cavity is configured with a vertically arranged key slot at the bottom, and the top of the vertical steel bar extends into the key slot.

11. The connection structure according to claim 10, wherein the portion of the vertical reinforcing bars protruding from the top of the prefabricated wall body is a U-shaped reinforcing bar.

12. A prefabricated wall body mould as claimed in claim 1, which comprises a mould frame, wherein a first module for constructing a cast-in-place cavity at the bottom of the wall body is arranged in the mould frame, and the top of the cast-in-place cavity module is connected with a mould pipe for constructing a concrete pouring channel.

13. A wall form according to claim 12, wherein the top of the form tube is provided with a second module for constructing an enlarged concrete entry area.

14. A wall form according to claim 12, wherein the first block is further provided with a third block for forming a keyway in the inner wall of the cast-in-place cavity.

15. The wall form of claim 14, wherein the third module is a rubber strip separately disposed on the first module or is integrally formed with the first module.