CN217759490U

CN217759490U - Box anti-floating structure in cast-in-place hollow floor system

Info

Publication number: CN217759490U
Application number: CN202222061304.1U
Authority: CN
Inventors: 刘芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-07
Filing date: 2022-08-07
Publication date: 2022-11-08
Anticipated expiration: 2032-08-07

Abstract

The utility model relates to a construction technical field discloses a box anti-structure of floating in cast-in-place hollow superstructure, include by last floor top mould that interval set gradually under to, go up reinforcing bar net piece, hollow box, reinforcing bar net piece and floor die block down, it has concrete layer to fill between floor top mould and the floor die block, hollow box is provided with the centre bore, the butt has the cushion between the lower surface of hollow box and the floor die block, still include pull rod and retaining member, the upper end and the last reinforcing bar net piece locking cooperation of pull rod, the lower extreme of pull rod runs through centre bore and floor die block in proper order and is connected with the retaining member, the retaining member is used for restricting the displacement of pull rod along vertical direction. The utility model discloses can avoid the whole emergence of come-up phenomenon of rib roof beam to accurate control the thickness of cast-in-place hollow superstructure, improved construction quality, guarantee hollow superstructure stable in structure.

Description

Box anti-floating structure in cast-in-place hollow floor system

Technical Field

The utility model relates to a construction technical field especially relates to an anti structure of floating of box in cast-in-place hollow superstructure.

Background

The cast-in-place reinforced concrete hollow floor system is a novel floor system behind a flat slab floor and a ribbed floor, and the construction process usually adopts a novel hollow floor system formed by arranging a certain number of prefabricated permanent hollow boxes in the cast-in-place concrete floor according to rules, and has the advantages of large rigidity, small deformation and good anti-seismic performance; meanwhile, the self weight of the floor and the building is reduced, the reinforcing bars are reduced, and concrete and steel are saved, so that the construction cost is reduced; compared with the traditional formwork construction process, the formwork construction process has the advantages of no disassembly, convenience in installation and simplicity in construction.

However, in the construction process, the hollow box body is densely installed and is integrally sealed, so that the hollow box body has the characteristics of small density, light dead weight and large span. In the concrete pouring process, due to the fluidity of concrete, the hollow box body is easy to float upwards and shift under the action of the concrete, and further along with the floating process of the hollow box body, the hollow box body drives the rib beam to float upwards integrally, so that the phenomenon is particularly obvious in the small-area floor slab construction process, and the rib beam floats upwards to cause the elevation of a local floor slab to be ultrahigh, thereby causing quality problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing an anti structure of floating of box in cast-in-place hollow superstructure to solve the problem of rib roof beam come-up in the engineering work progress, guarantee hollow superstructure stable in structure.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides an anti structure of floating of box in cast-in-place hollow superstructure, includes by the floor top mould that sets up in proper order under to, go up reinforcing bar net piece, hollow box, reinforcing bar net piece and floor die block down, it has concrete layer to fill between floor top mould and the floor die block, hollow box is provided with the centre bore, the butt has the cushion between the lower surface of hollow box and the floor die block, still includes pull rod and retaining member, the upper end of pull rod with go up reinforcing bar net piece locking cooperation, the lower extreme of pull rod runs through in proper order centre bore and floor die block and with the retaining member is connected, the retaining member is used for the restriction the displacement of vertical direction is followed to the pull rod.

Further, the pull rod includes curved hook portion and the pole portion that is set up by last to lower integrated into one piece, curved hook portion with go up reinforcing bar net piece locking cooperation, pole portion with centre bore intermittent type cooperation, the lower extreme of pole portion runs through in proper order centre bore and floor die block and with the retaining member is connected.

Furthermore, stull purlins and bearing plates are sequentially arranged below the floor bottom die, the upper surfaces of the stull purlins are abutted to the lower surface of the floor bottom die and used for supporting the floor bottom die, the lower surfaces of the stull purlins are abutted to the upper surface of the bearing plate, the lower ends of the rod portions penetrate through the bearing plates and are connected with the locking pieces, and the locking pieces are abutted to the lower surfaces of the bearing plates.

Further, a cross rod is fixedly connected to the middle of the rod portion, and the cross rod is abutted to the upper surface of the hollow box body.

Furthermore, the cushion block is abutted between the upper surface of the hollow box body and the upper reinforcing mesh.

Further, the rod part and the central hole are coaxially arranged.

Further, the lower extreme of pole portion is provided with helicitic texture, the retaining member is the nut, the lower extreme of pole portion with nut screw thread can dismantle the connection.

Furthermore, the number of the hollow boxes is multiple, the hollow boxes are distributed in a rectangular array mode, stirrups are arranged between the hollow boxes, the upper ends and the lower ends of the stirrups are connected with the upper reinforcing mesh and the lower reinforcing mesh respectively, and the cushion blocks are abutted between the stirrups and the side walls of the hollow boxes.

Compared with the prior art, the utility model at least has the following advantage:

because the upper end of the pull rod is matched with the upper reinforcing mesh piece in a locking manner, the lower end of the pull rod limits vertical displacement through the locking piece, so that the upper reinforcing mesh piece has no displacement in the vertical direction, the phenomenon that the rib beam integrally floats upwards is avoided, the thickness of the cast-in-place hollow floor is accurately controlled, the construction quality is improved, and the stable structure of the hollow floor is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic view of a first embodiment of a box anti-floating structure in a cast-in-place hollow floor of the present invention;

fig. 2 is a schematic view of a second embodiment of the box anti-floating structure in the cast-in-place hollow floor system of the utility model.

Reference numerals are as follows: 1. a floor slab top mold; 2. arranging a reinforcing mesh; 3. a hollow box body; 4. a reinforcing mesh is arranged; 5. a floor bottom die; 6. a concrete layer; 7. a pull rod; 8. a cross brace purline; 9. a pressure bearing plate; 10. a locking member; 11. cushion blocks; 12. a cross bar; 13. hooping; 31. a central bore.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.

Referring to fig. 1, the utility model provides a box anti-structure of floating in cast-in-place hollow superstructure, cast-in-place hollow superstructure includes by the last floor top mould 1 that sets up in proper order under to, go up reinforcing bar net piece 2, hollow box 3, reinforcing bar net piece 4 and floor die block 5 down. Wherein, it has concrete layer 6 to fill between floor top mould 1 and the floor die block 5, and hollow box 3 is the anti mould shell of anti splitting of the visual type of cavity, generally is the cuboid shape, and hollow box 3 center department is provided with centre bore 31 along vertical direction, and centre bore 31 is the observation hole, and the butt has cushion 11 between the lower surface of hollow box 3 and the floor die block 5 for form effective support to hollow box 3. Furthermore the utility model discloses still include the anti structure that floats of box, specifically include pull rod 7 and retaining member 10, pull rod 7 can select the reinforcing bar preparation to form, and the preferred ribbed steel bar that uses, pull rod 7's upper end and last reinforcing bar net piece 2 locking cooperation, pull rod 7's lower extreme run through centre bore 31 and floor die block 5 in proper order and be connected with retaining member 10, and retaining member 10 is used for restricting pull rod 7 along the displacement of vertical direction. Retaining member 10 can select the reinforcing bar pin, and is fixed with pull rod 7's lower extreme through the welded mode to with 5 lower surface butts of floor die block, and then the restriction is to the vertical direction displacement of pull rod 7.

Because the upper end of the pull rod 7 is matched with the upper reinforcing mesh piece 2 in a locking manner, the lower end of the pull rod 7 limits vertical displacement through the locking piece 10, the upper reinforcing mesh piece 2 is prevented from displacing in the vertical direction, and the phenomenon that the rib beam integrally floats upwards is avoided, so that the thickness of the cast-in-place hollow floor is accurately controlled, the construction quality is improved, and the stable structure of the hollow floor is ensured. Simultaneously, to the engineering that has the furred ceiling demand, pull rod 7 still can be used as the furred ceiling pull rod in the later stage concurrently.

Preferably, the utility model discloses a pull rod 7 forms through the reinforcing bar bending type, specifically by last hook portion and the pole portion that integrated into one piece set up under to, hook portion catches on with last reinforcing bar net piece 2, realizes hook portion and the locking cooperation of last reinforcing bar net piece 2, and pole portion downwardly extending under the action of gravity sets up, and pole portion and 31 intermittent type cooperations of centre bore guarantee that pole portion does not block up centre bore 31, and the lower extreme of pole portion runs through centre bore 31 and floor die block 5 in proper order and can dismantle with retaining member 10 and be connected.

Preferably, 5 below in the floor die block have set gradually stull purlin 8 and bearing plate 9, the upper surface of

stull purlin

8 and 5 lower surface butts of floor die block for the realization is to the support of floor die block 5, and the lower surface of stull purlin 8 is provided with bearing plate 9, and the lower extreme of pole portion runs through bearing plate 9 and is connected with retaining member 10, retaining member 10 and bearing plate 9's lower surface butt. The locking member 10 is in contact with the lower surface of the bearing plate 9, and the locking member 10 is not in contact with the floor bottom die 5, so that the condition that the floor bottom die 5 deforms due to the action of the locking member 10 and the floor bottom die 5 can be effectively avoided, and the structural quality of the cast-in-place hollow floor system is improved.

In order to ensure that the upper surface of the hollow box body 3 and the upper reinforcing steel bar mesh piece 2 keep an interval, the middle part of the rod part is fixedly connected with a cross rod 12, the cross rod 12 can also be made of reinforcing steel bars and is fixed with the rod part in a welding mode, the cross rod 12 can be in a straight shape, a cross shape or a rice shape and the like, and the cross rod 12 is abutted to the upper surface of the hollow box body 3. Because the pull rod 7 can not move in the vertical direction, the cross rod 12 can also keep a stable state, and the condition that the hollow box body 3 floats upwards is further avoided.

Preferably, the stem portion is disposed coaxially with the central bore 31.

Preferably, the utility model discloses the lower extreme of well pole portion is provided with helicitic texture, specifically is the lower extreme of pole portion to be provided with the external screw thread, and retaining member 10 is the nut, and the lower extreme and the nut screw thread of pole portion can be dismantled and be connected. On one hand, the disassembly and assembly processes of the locking piece 10 are facilitated, and on the other hand, the effective use length of the pull rod 7 is changed into an adjustable length, so that the application range of the pull rod 7 is enlarged.

In the work progress, the quantity of hollow box 3 is a plurality of, and a plurality of hollow box 3 are the rectangular array and distribute, are provided with stirrup 13 between the adjacent hollow box 3, and stirrup 13's upper and lower both ends are connected with last reinforcing bar net piece 2 and lower reinforcing bar net piece 4 respectively, and the butt has cushion 11 between the lateral wall of stirrup 13 and hollow box 3. Such a design is advantageous in avoiding the occurrence of displacement of the hollow box 3.

The utility model provides a cast-in-place hollow superstructure pours process flow:

firstly, after supporting a cross brace purline 8 and a floor slab bottom die 5 of a hollow floor slab, arranging a lower reinforcing mesh 4, arranging cushion blocks 11 for supporting a hollow box body 3 according to a construction drawing, then positioning the hollow box body 3 in place, installing stirrups 13 and upper reinforcing mesh pieces 2, then installing a pull rod 7, locking and fixing the upper end of the pull rod 7 and the upper reinforcing mesh pieces 2, installing a bearing plate 9 and a locking piece 10 at the lower end of the pull rod 7 and welding a cross rod 12, then installing a floor slab top die 1, and performing a concrete layer 6 pouring process; and finally, after the concrete layer 6 is cured, the construction process can be completed by the transverse supporting purlines 8, the bearing plates 9, the locking pieces 10, the floor bottom die 5 and the floor top die 1.

Example two

The difference between this embodiment and the first embodiment is that the cross bar 12 is not provided, and the cushion block 11 is abutted between the upper surface of the hollow box body and the upper reinforcing mesh sheet 2. Because the upper reinforcing mesh piece 2 can keep a stable state, the hollow box body 3 can be prevented from floating upwards under the action of the cushion block 11.

The utility model discloses cast-in-place hollow superstructure of embodiment two pours process flow:

firstly, after supporting a transverse supporting purline 8 and a floor bottom die 5 of a hollow floor slab, arranging a lower reinforcing mesh 4, arranging cushion blocks 11 for supporting a hollow box body 3 according to a construction drawing, then placing the hollow box body 3 in place, installing stirrups 13, upper reinforcing mesh sheets 2 and corresponding cushion blocks 11, then installing a pull rod 7, locking and fixing the upper end of the pull rod 7 and the upper reinforcing mesh sheets 2, installing a bearing plate 9 and a locking piece 10 at the lower end of the pull rod 7, then installing a floor slab top die 1, and performing a concrete layer 6 pouring process; and finally, after the concrete layer 6 is cured, the cross brace purlines 8, the bearing plates 9, the locking pieces 10, the floor bottom die 5 and the floor top die 1 can be used for completing the construction process.

The utility model discloses not only construction process is simple, and the material saving quantity reduces use cost, can prevent moreover that hollow box 3 from producing phenomenons such as come-up, aversion at the concrete placement in-process, satisfies the requirement of engineering quality.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not limited to the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims

1. The utility model provides a box anti-structure of floating in cast-in-place hollow superstructure, includes by last floor top mould (1) that the interval set up in proper order under to, goes up reinforcing bar net piece (2), hollow box (3), lower reinforcing bar net piece (4) and floor die block (5), it has concrete layer (6) to fill between floor top mould (1) and floor die block (5), hollow box (3) are provided with centre bore (31), the butt has cushion (11) between the lower surface of hollow box (3) and floor die block (5), its characterized in that still includes pull rod (7) and retaining member (10), the upper end of pull rod (7) with go up reinforcing bar net piece (2) locking cooperation, the lower extreme of pull rod (7) runs through in proper order centre bore (31) and floor die block (5) and with retaining member (10) are connected, retaining member (10) are used for the restriction the displacement of pull rod (7) along vertical direction.

2. The box anti-floating structure in the cast-in-place hollow floor system according to claim 1, wherein the pull rod (7) comprises a hook portion and a rod portion which are integrally formed from top to bottom, the hook portion is in locking fit with the upper reinforcing mesh (2), the rod portion is in intermittent fit with the central hole (31), and the lower end of the rod portion sequentially penetrates through the central hole (31) and the floor bottom die (5) and is connected with the locking member (10).

3. The box anti-floating structure in cast-in-place hollow floor system according to claim 2, characterized in that a cross supporting purlin (8) and a bearing plate (9) are sequentially arranged below the floor bottom die (5), the upper surface of the cross supporting purlin (8) is abutted to the lower surface of the floor bottom die (5) for realizing the support of the floor bottom die (5), the lower surface of the cross supporting purlin (8) is abutted to the upper surface of the bearing plate (9), the lower end of the rod portion penetrates through the bearing plate (9) and is connected with the locking member (10), and the locking member (10) is abutted to the lower surface of the bearing plate (9).

4. The box anti-floating structure in the cast-in-place hollow floor system as claimed in claim 3, wherein a cross bar (12) is fixedly connected to the middle of the bar portion, and the cross bar (12) abuts against the upper surface of the hollow box body (3).

5. The box anti-floating structure in the cast-in-place hollow floor system as claimed in claim 3, wherein the cushion block (11) is abutted between the upper surface of the hollow box body (3) and the upper reinforcing mesh (2).

6. The box anti-floating structure in the cast-in-place hollow floor system as claimed in claim 2, wherein the rod part is coaxially arranged with the central hole (31).

7. The box anti-floating structure in the cast-in-place hollow floor system as claimed in claim 2, wherein the lower end of the rod part is provided with a threaded structure, the locking member (10) is a nut, and the lower end of the rod part is in threaded detachable connection with the nut.

8. The box anti-floating structure in the cast-in-place hollow floor system according to claim 1, wherein the number of the hollow boxes (3) is multiple, the multiple hollow boxes (3) are distributed in a rectangular array, stirrups (13) are arranged between the adjacent hollow boxes (3), the upper end and the lower end of each stirrup (13) are respectively connected with the upper reinforcing mesh (2) and the lower reinforcing mesh (4), and the cushion blocks (11) are abutted between the stirrups (13) and the side walls of the hollow boxes (3).