CN212554395U

CN212554395U - Casting forming die of pre-tensioning method prestress broken line reinforcement prefabricated hollow slab

Info

Publication number: CN212554395U
Application number: CN202020781566.3U
Authority: CN
Inventors: 杨泓
Original assignee: Changzhou Wujin Architectural Design Institute Co ltd
Current assignee: Changzhou Wujin Architectural Design Institute Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-02-19
Anticipated expiration: 2030-05-12

Abstract

The utility model relates to a pre-tensioning prestressing force broken line cloth muscle precast hollow board pour child mould, including the steel box roof beam, locate two steel box roof beams between bottom steel secondary beam, the bottom steel secondary beam under the steel box roof beam, locate the steering gear on the steel box roof beam and aerify rubber mandrel, sharp cloth muscle and broken line cloth muscle. The utility model discloses a casting bed-jig of a pre-tensioning prestressing fold line cloth rib precast hollow slab, which solves the problems that the end part of the slab is easy to crack and the arching amount is large; the steel bars are distributed on the folding lines, the truss steel bars are arranged on the upper flange, and the problems of connection with the laying beam and floor integrity are solved; can satisfy the demand of pouring the hollow core slab of arbitrary height, and it can be under construction by nomadic formula. The utility model discloses a pre-tensioning prestressing force broken line cloth muscle precast hollow slab's bed die of pouring satisfies the requirement of assembly type structure, accomplishes standardized design, batch production, assembled construction.

Description

Casting forming die of pre-tensioning method prestress broken line reinforcement prefabricated hollow slab

Technical Field

The utility model belongs to the technical field of the hollow slab and specifically relates to a pre-tensioning method prestressing force broken line cloth muscle precast hollow slab's bed-jig of pouring.

Background

The pre-tensioned prestressed concrete hollow slabs are generally prefabricated elements which are produced in a factory and transported to a construction site for installation, and are generally used as floor and roof slabs. Under the large background of the modernization of the building industry advocated by the state, the building construction is required to adopt the fabricated building, namely standardized design, industrialized production and fabricated construction, so that the prefabricated floor panels are widely applied.

The conventional hollow prefabricated slab is generally provided with straight-line ribs, and has the defects that the end part of the slab is easy to crack and the arching amount is large. The conventional manufacturing process of the prefabricated hollow slab adopts a core-pulling die-drawing method or a pushing and extruding forming method. The core-pulling die-drawing method is high in production efficiency, is suitable for plates with the section height smaller than 220mm, and during die-drawing, the concrete is easy to collapse and difficult to form due to the large section height, while the currently used large-span hollow plates are obviously not suitable for the core-pulling die-drawing method because the section height is more than 300 mm. The extrusion forming method has the highest production efficiency, but the working principle determines that the extrusion forming method cannot produce the hollow slab with the broken line reinforcement, in addition, in order to strengthen the connection between the prefabricated hollow slab and the superposed layer, the exposed truss reinforcement is often additionally arranged at the upper flange of the hollow slab, in order to enhance the floor integrity, the beard reinforcement is required to be reserved at the end part of the hollow slab, and the extrusion forming method cannot be realized.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the hollow slab needs to satisfy the demand that broken line cloth muscle, last flange set up truss reinforcing bar, tip reservation beard muscle and pour arbitrary height simultaneously, for overcoming exist among the prior art not enough, provides a pretension method prestressing force broken line cloth muscle precast hollow slab's the child mould of pouring.

The utility model provides a technical scheme that its technical problem adopted is: a casting forming die of a pre-tensioning prestressed fold line reinforcement-distributed precast hollow slab comprises steel box beams, a steel bottom plate arranged between the two steel box beams, a bottom secondary steel beam below the steel bottom plate, a steering gear arranged on the steel bottom plate, an inflatable rubber core die, linear reinforcement distribution and fold line reinforcement distribution. After concrete is poured, the inflatable rubber core mold, the linear reinforcing bars and the broken line reinforcing bars are arranged inside the formed prefabricated hollow slab, and the end parts of the linear reinforcing bars and the broken line reinforcing bars are exposed, so that the requirements of the hollow slab on the broken line reinforcing bars and the arrangement of truss reinforcing bars on the upper flange are met, and the problems of connection with a laying beam and floor integrity are solved; the steel strand distribution mode of linear reinforcement distribution and broken line reinforcement distribution is adopted, and the problems that the end part of the plate is easy to crack and the arching amount is large are solved.

The end part of the steel box girder is provided with a tensioning beam, and a beam support connected with the steel box girder is arranged below the tensioning beam. And a tensioning cross beam for tensioning is arranged to transmit tensioning force generated during the tensioning of subsequent linear and broken line reinforcing bars to the steel box girder.

The steering gear comprises a finished lifting ring nut with a screw thread at the top end, round steel with threads at the two ends of the middle part, a nut at the bottom and a base plate, wherein one end of the broken line cloth rib penetrates through the finished lifting ring nut at the top end of the steering gear, and the other end of the broken line cloth rib penetrates through the jack and is fixed at the front end of the jack. And arranging a steering gear for distributing ribs in a folding line, and removing nuts and base plates at the bottom and round steel wires at two ends of the middle part before lifting the prefabricated hollow slab after maintenance is finished.

The lower part of the steering gear is provided with a bottom truss for fixing, and the bottom truss is fixedly connected to the steel box girder. The bottom truss is arranged for fixing the steering gear and bearing axial force.

The front end of the linear reinforcement is fixed at the front end of the jack after penetrating through the jack. And tensioning the linear steel wire arrangement bars and the broken line steel wire arrangement bars through the jack to complete two steel wire arrangement modes.

The steel bottom plate is provided with an end template and a side template for pouring. And setting end formworks and side formworks to frame the external dimension of the prefabricated hollow slab so as to pour concrete.

When the casting bed die of the pretensioning prestressed fold line reinforcement-distribution precast hollow slab is used for manufacturing the hollow slab, the linear reinforcement distribution is firstly carried out, namely, the linear steel stranded wires are arranged; placing the steering gear; then folding (folding line) reinforcement arrangement is carried out, namely, a folding line steel strand is penetrated through the finished lifting ring nut of the steering gear; then, placing an end template and a side template according to the overall dimension of the component; then, tensioning the linear steel strands and the broken line steel strands through a jack; after fixing the inflatable rubber core mold, pouring concrete into a cavity formed by the steel bottom plate, the end template and the side template, and then maintaining the hollow slab to the designed strength; removing a nut and a base plate at the bottom of the steering gear and round steel wires which are threaded at two ends of the middle part, and lowering the jack to stretch a linear steel strand and a fold line steel strand; and finally, hoisting the concrete hollow slab.

The utility model has the advantages that: the utility model discloses a casting bed-jig of a pre-tensioning prestressing fold line cloth rib precast hollow slab, which solves the problems that the end part of the slab is easy to crack and the arching amount is large; the steel bars are distributed on the folding lines, the truss steel bars are arranged on the upper flange, and the problems of connection with the laying beam and floor integrity are solved; can satisfy the demand of pouring the hollow core slab of arbitrary height, and it can be under construction by nomadic formula. The utility model discloses a pre-tensioning prestressing force broken line cloth muscle precast hollow slab's bed die of pouring satisfies the requirement of assembly type structure, accomplishes standardized design, batch production, assembled construction.

Drawings

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

FIG. 1 is a schematic structural view of a transverse section of the present invention;

fig. 2 is a schematic longitudinal sectional structure of the present invention;

fig. 3 is a schematic top view of a portion of the present invention;

fig. 4 is a schematic structural view of the steering gear of the present invention.

Reference numbers in the figures: 1-jack, 2-linear reinforcement arrangement, 3-fold line reinforcement arrangement, 4-steering gear, 41-finished flying ring nut, 42-round steel, 43-nut, 5-steel bottom plate, 6-bottom truss, 7-end template, 8-side template, 9-steel box girder, 10-tensioning beam, 11-beam support, 12-bottom steel secondary beam and 13-inflatable rubber core mold.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The casting bed-jig of the pretensioning prestressed fold line reinforcement prefabricated hollow slab shown in the figures 1-4 comprises steel box girders 9, a steel bottom plate 5 arranged between the two steel box girders 9, a bottom steel secondary beam 12 below the steel bottom plate 5, a steering gear 4 and an inflatable rubber core mold 13 arranged on the steel bottom plate 5, linear reinforcement arrangement 2 and fold line reinforcement arrangement 3.

The end part of the steel box girder 9 is provided with a tension beam 10, and a beam support 11 connected with the steel box girder 9 is arranged below the tension beam 10. The steering gear 4 comprises a finished lifting ring nut 41 with a screw thread at the top end, round steel 42 with threads at two ends in the middle, a nut 43 at the bottom and a base plate, one end of the fold line cloth rib 3 penetrates through the finished lifting ring nut 41 at the top end of the steering gear 4, and the other end of the fold line cloth rib penetrates through the jack 1 and is fixed at the front end of the jack 1. The lower part of the steering gear 4 is provided with a bottom truss 6 for fixing, and the bottom truss 6 is fixedly connected with a steel box girder 9. The front end of the linear cloth rib 2 passes through the jack 1 and is fixed at the front end of the jack 1. An end template 7 and a side template 8 for pouring are arranged on the steel bottom plate 5.

When the hollow slab is manufactured by the casting moulding bed of the pre-tensioning method prestressed fold line reinforcement-distribution prefabricated hollow slab, firstly, linear reinforcement distribution 2 is carried out, namely, linear steel strands are distributed; the steering gear 4 is put well; then folding and arranging the ribs (folding line rib arrangement 3), namely, penetrating the folding line steel stranded wires from the finished lifting ring nut 41 of the steering gear 4; then, placing an end template 7 and a side template 8 according to the overall dimension of the component; then, tensioning the linear steel strands and the broken line steel strands through a jack 1; after the inflatable rubber core mould 13 is fixed, concrete is poured into a cavity formed by the steel bottom plate 5, the end template 7 and the side template 8, and then the hollow slab is maintained to the designed strength; removing a nut 43 and a base plate at the bottom of the steering gear 4 and round steel 42 threaded at two ends of the middle part, and lowering the jack 1 to release a linear steel strand and a broken line steel strand; and finally, hoisting the concrete hollow slab.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a pre-tensioning prestressing force broken line cloth muscle precast hollow slab's pouring child mould which characterized in that: the steel box girder comprises steel box girders (9), a steel bottom plate (5) arranged between the two steel box girders (9), a bottom steel secondary girder (12) arranged below the steel bottom plate (5), a steering gear (4) arranged on the steel bottom plate (5), an inflatable rubber core mold (13), linear reinforcing steel bars (2) and fold line reinforcing steel bars (3).

2. The casting forming die of the pre-tensioned prestressing fold line reinforcement precast hollow slab as recited in claim 1, characterized in that: the end part of the steel box girder (9) is provided with a tension beam (10), and a beam support (11) connected with the steel box girder (9) is arranged below the tension beam (10).

3. The casting forming die of the pre-tensioned prestressing fold line reinforcement precast hollow slab as recited in claim 1, characterized in that: the steering gear (4) comprises a finished lifting ring nut (41) with a screw thread on the top end, round steel (42) with threads at two ends of the middle part, a nut (43) at the bottom and a base plate, one end of the fold line cloth rib (3) penetrates through the finished lifting ring nut (41) on the top end of the steering gear (4), and the other end of the fold line cloth rib penetrates through the jack (1) and is fixed at the front end of the jack (1).

4. The casting forming die of the pre-tensioned prestressing fold line reinforcement precast hollow slab as recited in claim 3, characterized in that: the lower part of the steering gear (4) is provided with a bottom truss (6) for fixing, and the bottom truss (6) is fixedly connected to the steel box girder (9).

5. The casting forming die of the pre-tensioned prestressing fold line reinforcement precast hollow slab as recited in claim 1, characterized in that: the front end of the linear rib arrangement (2) penetrates through the jack (1) and is fixed at the front end of the jack (1).

6. The casting forming die of the pre-tensioned prestressing fold line reinforcement precast hollow slab as recited in claim 1, characterized in that: the steel bottom plate (5) is provided with an end template (7) and a side template (8) for pouring.