CN206157973U - Lead to muscle formula concrete coincide floor structures and prefabricated panel's preparation mould thereof - Google Patents

Abstract

The utility model relates to the field of prefabricated concrete buildings, in particular to a through-reinforced concrete laminated floor slab structure and a mold for making a prefabricated bottom slab. The structure includes a prefabricated base plate, longitudinally stressed steel bars, reserved grooves for transversely stressed steel bars, negative moment steel bars, and transversely stressed steel bars. Groove formwork, detachable flat groove formwork, end face formwork, steel bar fixing mold. Because of its unique uninterrupted horizontal reinforcement between the prefabricated bottom slabs, the connection between the prefabricated bottom slabs does not require additional connection measures and additional connecting steel bars, which simplifies construction, saves materials, and greatly enhances the integrity of the laminated slab; The transverse stress reinforcement of the composite concrete floor slab is placed in the reserved transverse stress reinforcement groove in the prefabricated floor, which is as close as possible to the bottom of the prefabricated floor, so that its bending resistance can be equal to that of the cast-in-place slab.

Description

Through-reinforced concrete laminated slab structure and its prefabricated bottom slab production mold

technical field

The utility model relates to the field of prefabricated concrete buildings, in particular to a through-reinforced concrete laminated floor structure and a mold for making the same. The produced through-reinforced concrete laminated floor can be used as a floor for prefabricated concrete buildings.

Background technique

In prefabricated concrete buildings, floor slabs are generally made of concrete laminated slabs. There are many forms of concrete laminated slabs, including prestressed concrete sandwich laminated slabs, concrete laminated slabs with reverse ribs, ordinary prestressed concrete hollow laminated slabs, self-supporting reinforced concrete laminated slabs, and concrete laminated slabs with shear keys Wait. For these laminated slabs, because the transverse stress reinforcement of the precast concrete floor is cut off at the edge of the precast floor, measures such as adding additional steel bars are required for the connection between the precast concrete floor, which increases the complexity of the construction and the amount of reinforcement. The discontinuity of the reinforced steel bars also has an adverse effect on the stress of the overall concrete laminated slab. In order to solve the above problems, a through-reinforced concrete laminated floor structure, fabrication and assembly methods are proposed.

Utility model content

The purpose of the utility model is to provide a through-reinforced concrete laminated floor structure to realize the manufacture and installation of laminated floors in prefabricated concrete buildings, and to meet the requirements of actual prefabricated concrete construction engineering design and construction.

The technical scheme of the utility model is:

A through-reinforced concrete laminated floor structure, the structure includes: prefabricated bottom slab, longitudinal stress reinforcement, reserved grooves for transverse stress reinforcement, negative moment reinforcement, transverse stress reinforcement, the specific structure is as follows:

The prefabricated base plate is provided with longitudinal stress reinforcement, and the upper surface of the prefabricated base plate is provided with a reserved groove for transverse force reinforcement. The lower surface of the steel bar is connected with the longitudinal force reinforcement;

The horizontally stressed steel bars are placed in the grooves of the reserved horizontally stressed steel bars, and the negative moment steel bars are symmetrically arranged horizontally and vertically between the prefabricated floor and the cast-in-place concrete layer, and the bottom end of the negative moment steel bars is erected on the surface of the precast floor.

The mold for making the prefabricated floor on the reinforced concrete laminated floor structure, the molds for making the prefabricated floor are all made of steel, including: side formwork, base formwork, detachable groove formwork, detachable flat groove formwork, end face formwork, Reinforcement fixed mold, the specific structure is as follows:

The bottom surface of the base template is provided with base template grooves, the side of the base template is provided with base template side baffles, and the end face of the base template is provided with base template end baffles; the detachable groove template, detachable flat groove template, and end face template are The structure is arranged in sequence, and the structure is arranged on the groove of the base formwork of the base formwork. The detachable groove formwork, the detachable flat groove formwork, and the end surface formwork are respectively plugged into the groove of the base formwork. The two sides are in contact with the side baffles of the base formwork respectively; one side of the side formwork is provided with a side formwork groove, and the side formwork groove is inserted between the detachable trough-out formwork, and the side formwork and the detachable trough-out formwork are vertically arranged. The end formwork is arranged vertically to the side baffle of the base formwork; one end of the side formwork abuts against the end baffle of the base formwork, and the other end of the side formwork abuts against the end formwork;

The detachable groove formwork and the detachable flat groove formwork are pre-installed with longitudinal reinforcement bars, one end of the longitudinal force reinforcement is in contact with the end baffle of the base formwork, the other end of the longitudinal force reinforcement is in contact with the end formwork, and the steel bars fix the mold It is vertically arranged with the longitudinally stressed steel bar, and the steel bar fixing mold is clamped with the longitudinally stressed steel bar through the semicircular hole on one side.

In the mold for making the prefabricated floor on the reinforced concrete laminated floor structure, the depth of the groove of the base formwork is greater than 1/3 of the height of the detachable groove formwork.

The mold for making the prefabricated floor on the reinforced concrete laminated floor structure, the height of the side formwork is the same as the height of the prefabricated floor, and the length of the side formwork is designed according to the building modulus requirements, including 0.6m, 1.2m, 1.5m, 2.7m or 3.0m; the width of the side formwork groove is the same as the thickness of the detachable trough formwork, and the depth of the side formwork groove is the same as the height of the detachable trough formwork minus the height of the base formwork groove.

In the mold for making the prefabricated bottom slab on the reinforced concrete laminated slab structure, the thickness and height of the detachable flat groove formwork are respectively the same as the width and depth of the groove of the reserved transversely stressed reinforcement, so that the detachable flat groove formwork can be Insert it into the groove of the reserved transverse stress reinforcement.

In the mold for making the prefabricated bottom slab on the through-reinforced concrete laminated slab structure, the thickness of the end formwork is the same as the width of the transversely stressed reinforcement groove, the height of the end formwork is the same as the height of the detachable groove formwork, and the height of the end formwork is the same. The length is the same as the width of the prefabricated floor.

The mold for making the prefabricated bottom slab on the described reinforced concrete laminated floor structure, the bottom surface of the steel bar fixed mold is provided with semicircular holes, the spacing of the semicircular holes is 100mm, the diameter of the semicircular holes is greater than 1mm of the longitudinally stressed steel bar, and the thickness of the steel bar fixed mold is The same as the thickness of the end formwork, the length of the steel bar fixing mold is designed according to the building modulus requirements, including 0.6m, 1.2m, 1.5m, 2.7m or 3.0m.

The utility model has the following characteristics and beneficial effects:

1. The utility model through-reinforced concrete laminated floor slab is provided with a groove for transversely stressed steel bars in the prefabricated bottom slab to place the horizontally stressed steel bars, and the transversely stressed steel bars can pass through the adjacent prefabricated bottom slabs, so that the transverse steel bars between the prefabricated bottom slabs Uninterrupted, this is a feature that all laminated slabs do not have at present. The uninterrupted transverse reinforcement makes the connection between the prefabricated bottom plates of laminated slabs do not require additional connection measures and additional connecting steel bars, which simplifies construction and saves materials. Greatly enhanced the integrity of the laminated board.

2. The utility model through-reinforced concrete laminated floor, because the prefabricated bottom slab is provided with a groove for transversely stressed steel bars, after pouring the cast-in-place concrete layer, the cast-in-place concrete layer will enter the groove for transversely stressed steel bars, thereby strengthening The shear and tensile connection between the cast-in-situ concrete layer and the prefabricated bottom slab is improved, and the overall performance of the laminated slab is further improved. At the same time, because the transverse stress reinforcement is placed in the reserved transverse stress reinforcement groove in the prefabricated floor, it is as close as possible to the bottom of the prefabricated floor, so the flexural performance of the through-reinforced concrete laminated floor can be realized to be comparable to that of cast-in-place board equivalent.

3. The through-reinforced concrete laminated floor slab of the present invention has the same advantages as other concrete laminated slabs, such as formwork saving, energy saving and environmental protection, and conforming to the development direction of green buildings.

4. The formwork of the prefabricated floor of the through-reinforced concrete laminated floor of the utility model can be flexibly disassembled and assembled because the designed groove formwork and side formwork can be flexibly disassembled and assembled. Therefore, it can meet the production of prefabricated floors of different sizes and facilitate the production of products.

Description of drawings

Fig. 1 is the three-dimensional diagram of the prefabricated concrete bottom slab (hereinafter referred to as the prefabricated bottom slab) with grooves and longitudinally stressed steel bars of the present invention.

Fig. 2 is a sectional view along the direction A-A of Fig. 1 .

Figure 3 is a three-dimensional diagram of a negative moment reinforcement.

Fig. 4 is a three-dimensional view of a through-reinforced concrete laminated floor slab.

Fig. 5 is a cross-sectional view along B-B direction of Fig. 4 .

Fig. 6 is a three-dimensional view of side templates of different specifications.

Figure 7 is a three-dimensional view of the base template.

Fig. 8 is a three-dimensional view of the detachable groove template.

Figure 9 is a three-dimensional view of the detachable flat slot formwork.

Fig. 10 is a three-dimensional view of the steel bar fixing mold.

Fig. 11 is a three-dimensional view of the process of installing the detachable groove formwork and side formwork on the base formwork.

Fig. 12 is a three-dimensional view of the installation of the detachable groove formwork and side formwork on the base formwork.

Fig. 13 is a three-dimensional view of the base formwork after laying longitudinally stressed steel bars and adding steel bars to fix the mould.

Fig. 14 is a three-dimensional view of making a prefabricated floor after pouring concrete is completed.

Figure 15 is a three-dimensional view of the prefabricated bottom plate at the connection with the column.

Fig. 16 is a three-dimensional view of the cast-in-place concrete layer of the through-reinforced concrete laminated floor slab before pouring.

Fig. 17 is a three-dimensional diagram of the assembly process of the prefabricated base plate, the transversely stressed steel bars, and the negative moment steel bars.

Fig. 18 is a three-dimensional diagram of the prefabricated base plate and the transverse force reinforcement and negative moment reinforcement assembled.

Fig. 19 is a three-dimensional view of the completion of pouring the cast-in-place concrete layer on the prefabricated floor.

In the figure, 1. Prefabricated floor; 2. Longitudinal stress reinforcement; 3. Reservation of transverse stress reinforcement groove; 4. Negative moment reinforcement; 5. Transverse stress reinforcement; 6. Beam; 7. Column; 8. Cast-in-place concrete layer; 9. Side formwork; 10. Base formwork; 11. Base formwork groove; 12. Detachable groove formwork; 13. Detachable flat groove formwork; 14. End formwork; 15. Prefabricated floor concrete; 16 .Prefabricated bottom plate at the connection with the column; 17. Reinforcement fixed mold; 18. Laminated concrete floor slab with reinforced concrete; 19. Side formwork groove; 20. Base formwork side baffle; 21. Base formwork end baffle.

detailed description

As shown in Figures 1-5, the utility model through-reinforced concrete laminated floor structure mainly includes: prefabricated floor 1, longitudinal stressed steel bar 2, reserved transverse stressed steel bar groove 3, negative moment steel bar 4, Horizontal stress reinforcement 5, cast-in-place concrete layer 8, etc., the specific structure is as follows:

As shown in Figures 1-2, the prefabricated bottom slab 1 is provided with longitudinally stressed steel bars 2, and the distance between the longitudinally stressed steel bars 2 and the lower surface of the prefabricated bottom slab 1 meets the requirements of the protective layer in concrete specifications. The upper surface of the prefabricated floor 1 is provided with a groove 3 for transversely stressed reinforcement, the upper surface of the groove 3 for the transversely stressed reinforcement is flush with the upper surface of the prefabricated floor 3, and the lower surface of the groove 3 for the transversely stressed reinforcement is aligned with the longitudinally stressed The reinforcement bars 2 are connected.

As shown in Fig. 3-Fig. 5, the laterally stressed steel bar 5 is placed in the groove 3 of the reserved transversely stressed steel bar, and the negative bending moment steel bar 4 is symmetrically arranged horizontally and vertically between the prefabricated bottom plate 1 and the cast-in-place concrete layer 8 respectively, The bottom end of the negative moment reinforcement 4 is erected on the upper surface of the prefabricated floor 1, and the top of the negative moment reinforcement 4 and the upper surface of the cast-in-place concrete layer 8 must meet the requirements of the protective layer of the concrete specification. Among them, the diameters and spacings of the longitudinal stress bars 2, transverse stress bars 5, and negative moment bars 4 need to be calculated according to the actual engineering conditions to meet the requirements of the bearing capacity and normal service limit state of the through-reinforced concrete laminated slab.

As shown in Figures 6-12, the mold for making the prefabricated floor of the utility model includes: side formwork 9, base formwork 10, detachable groove formwork 12, detachable flat groove formwork 13, end face formwork 14, steel bar fixing mold 17, etc. ,in:

The bottom surface of the base template 10 is provided with a base template groove 11, the side of the base template 10 is provided with a base template side baffle 20, and the end face of the base template 10 is provided with a base template end baffle 21; the removable groove template 12, detachable The flat groove formwork 13 and the end surface formwork 14 are sequentially arranged structures, and the sequential arrangement structure is arranged on the base formwork groove 11 of the base formwork 10, and the detachable groove formwork 12, the detachable flat groove formwork 13, and the end surface formwork 14 are respectively It is plugged into the groove 11 of the base template, and the two side surfaces of the sequentially arranged structure abut against the side baffles 20 of the base template respectively. One side of the side template 9 is provided with a side template groove 19, and the side template groove 19 is inserted between the detachable groove templates 12, the side template 9 is vertically arranged with the detachable groove template 12, and the end template 14 and the base template The side fences 20 are arranged vertically. One end of the side template 9 abuts against the end plate 21 of the base template, and the other end of the side template 9 abuts against the end template 14 .

The detachable groove formwork 12 and the detachable flat groove formwork 13 are preset with longitudinal stress reinforcement bars 2, one end of the longitudinal stress reinforcement bars 2 abuts against the end baffle plate 21 of the base formwork, and the other end of the longitudinal stress reinforcement bars 2 touches the end face formwork 14 abutting, the steel bar fixed mold 17 is vertically arranged with the longitudinally stressed steel bar 2, and the steel bar fixed mold 17 is clamped with the longitudinally stressed steel bar 2 through a semicircular hole on one side thereof.

The depth of the base template groove 11 is greater than 1/3 of the height of the detachable groove template 12, so as to ensure that the detachable groove template 12 is inserted into the base template groove 11 without shaking.

The building modulus requirements of the side formwork 9 are designed to be of different lengths, including 2.7m, 3.0m, 3.3m, 3.6m, and 3.9m, and can also be designed into other sizes according to actual engineering requirements. The height of side formwork 9 is identical with the height of prefabricated base plate 1, and the width of side formwork groove 19 is identical with the thickness of detachable groove formwork 12, and the depth of side formwork groove 19 is the height of detachable groove formwork 12 minus base The template grooves 10 have the same height.

The thickness and height of the detachable flat groove formwork 13 are the same as the width and depth of the reserved transversely stressed steel bar groove 3 respectively, so as to ensure that the detachable flat groove formwork 13 can be inserted into the reserved transversely stressed steel bar groove 3 .

The thickness of end face formwork 14 is identical with the width of transverse stress reinforcing bar groove 3, and the height of end face formwork 14 is identical with the height of detachable groove formwork 12, and the length of end face formwork 14 is with prefabricated floor 1 width.

The bottom surface of the steel bar fixed mold 17 is provided with semicircular holes, the spacing of the semicircular holes is 100mm, the diameter of the semicircular holes is 1mm larger than the longitudinally stressed steel bar, the thickness of the steel bar fixed mold 17 is the same as that of the end face template 14, and it is designed into different specifications according to the requirements of the building modulus. Length, including 0.6m, 1.2m, 1.5m, 2.7m, 3.0m.

As shown in Figures 13-19, the manufacturing process of the utility model through-reinforced concrete laminated floor is as follows:

(1) As shown in Figure 13 and Figure 14, first fix the base template 10, and then insert the detachable groove template 12, detachable flat groove template 13, and end face template 14 into the base template 10 according to the design size of the prefabricated bottom plate 1, Then place the side formwork 9 on the base formwork 10 to ensure that the detachable groove formwork 12 is inserted into the groove 19 of the side formwork 9 to complete the assembly of the prefabricated bottom plate 1 formwork.

(2) Apply lubricating oil to the surface of the template after assembly;

(3) As shown in Figures 13 and 14, place the longitudinally stressed steel bar 2 on the detachable groove formwork 12 according to the design requirements, and then use the steel bar fixing mold 17 to fix the longitudinally stressed steel bar 2 .

(4) As shown in Fig. 13 and Fig. 14, pour the prefabricated bottom slab concrete 15 and vibrate it. After the concrete fills the gap between the longitudinally stressed steel bars 2, remove the steel bar fixing mold 17 and continue to vibrate to complete the prefabricated bottom slab 1. Concrete pouring.

(5) After the concrete reaches the preset strength, the end formwork 14 and the side formwork 9 are first removed, and then the detachable groove formwork 12 is removed to complete the production of the prefabricated bottom plate 1, as shown in FIG. 1 .

(6) As shown in Figure 15, according to the actual engineering assembly needs, secondary processing methods such as cutting can be used to complete the fabrication of the prefabricated bottom plate 16 at the connection with the column.

(7) As shown in Figure 16, on the prefabricated bottom slab 1, the negative moment reinforcement 4 is arranged according to the structural requirements, and then the cast-in-situ concrete layer 8 is poured to complete the production of the through-reinforced concrete laminated floor slab, and the through-reinforcement after completion The composite concrete floor slab is shown in Figure 4 and Figure 5.

(8) Repeat the above process to complete the production of other through-reinforced concrete laminated floor slabs 18 .

As shown in Figures 17-19, the assembly method of the utility model through-reinforced concrete laminated floor is as follows:

(1) As shown in Figures 17-19, the prefabricated floor 1 is arranged on the beam 6, the transversely stressed steel bar 5 is placed in the reserved transversely stressed steel bar groove 3, and the negative moment steel bar 4 is arranged at a predetermined position. The prefabricated bottom plate 1 is processed into a prefabricated bottom plate 16 at the connection with the columns, and the columns 7 are arranged between the adjacent prefabricated bottom plates 16 at the connection with the columns.

(2) As shown in Figure 19, according to actual engineering needs, formwork is arranged around the cast-in-place concrete layer 8, and then the cast-in-place concrete layer 8 is poured to the design thickness to complete the assembly of the through-reinforced concrete laminated floor slab.

Repeating the above process can complete the assembly and manufacture of other parts of the through-reinforced concrete laminated floor slab.

The results of the examples show that the utility model through-reinforced concrete laminated floor slab does not require additional connection measures and additional connecting steel bars for the connection between the prefabricated bottom slabs because of the uninterrupted transverse steel bars between the prefabricated bottom slabs, which simplifies the construction. The material is saved, and the integrity of the laminated slab is greatly enhanced; the groove of the transversely stressed steel bar is reserved for the through-reinforced concrete laminated slab, which strengthens the shear and tensile connection between the cast-in-place concrete layer and the prefabricated bottom slab, greatly improving the The overall performance of the laminated slab; the transverse stress reinforcement of the through-reinforced concrete laminate floor is placed in the reserved transverse stress reinforcement groove in the prefabricated floor, which is as close as possible to the bottom of the prefabricated floor, so that its bending resistance performance Equivalent to cast-in-place slabs can be achieved.

Claims (7)

1. a kind of logical muscle formula reinforced concrete slab structure, it is characterised in that the structure includes：Prefabricated panel, longitudinal stress steel Muscle, reserved lateral stressed reinforcing bar groove, negative reinforcement, lateral stressed reinforcing bar, concrete structure is as follows：

Reinforcement is provided with prefabricated panel, prefabricated panel upper surface is provided with reserved lateral stressed reinforcing bar groove, laterally The upper surface of steel bar stress groove is concordant with the upper surface of prefabricated panel, the lower surface and longitudinal stress of lateral stressed reinforcing bar groove Reinforcing bar connects；

Reserve and place in lateral stressed reinforcing bar groove lateral stressed reinforcing bar, between prefabricated panel and cast-in-place concrete layer laterally and Longitudinal direction is respectively symmetrically setting negative reinforcement, and negative reinforcement bottom end is erected in prefabricated panel upper surface.

2. in the logical muscle formula reinforced concrete slab structure described in a kind of claim 1 prefabricated panel making mould, its feature It is that the mould for making prefabricated panel adopts steel, including：Side shuttering, base template, the removable slot template, removable of drawing off Template of rising as high as the banks, end face template, reinforcing bar fixing mould are unloaded, concrete structure is as follows：

The bottom surface of base template is provided with base template groove, and the side of base template is provided with base template side shield, base template End face be provided with base template end-stopping plate；It is removable to draw off slot template, template of detachably rising as high as the banks, end face template for arrangement knot successively Structure, this successively arrangement be arranged on the base template groove of base template, it is removable draw off slot template, mould of detachably rising as high as the banks Plate, end face template respectively with base template groove grafting, this successively arrangement two sides respectively with base template side shield Abut；The side of Side shuttering is provided with Side shuttering groove, Side shuttering groove be plugged in it is removable draw off between slot template, side Template is vertically arranged with the removable slot template that draws off, and end face template is vertically arranged with base template side shield；One end of Side shuttering Abut with base template end-stopping plate, the other end of Side shuttering is abutted with end face template；

It is removable to draw off preset Reinforcement in slot template, template of detachably rising as high as the banks, one end of Reinforcement and base Template end-stopping plate is abutted, and the other end of Reinforcement abuts with end face template, reinforcing bar fixing mould and Reinforcement It is vertically arranged, reinforcing bar fixing mould is by the semicircle orifice of its side and Reinforcement clamping.

3. according to the making mould of prefabricated panel in the logical muscle formula reinforced concrete slab structure described in claim 2, its feature It is that the depth of base template groove is more than the 1/3 removable height for drawing off slot template.

4. according to the making mould of prefabricated panel in the logical muscle formula reinforced concrete slab structure described in claim 2, its feature It is that the height of Side shuttering is highly identical with prefabricated panel, the length of Side shuttering requires to design according to building module, bag Include 0.6m, 1.2m, 1.5m, 2.7m or 3.0m；The width of Side shuttering groove is identical with the removable thickness for drawing off slot template, side The depth of plate groove deducts the highly identical of base template groove with the removable height for drawing off slot template.

5. according to the making mould of prefabricated panel in the logical muscle formula reinforced concrete slab structure described in claim 2, its feature It is that the thickness and height of template of detachably rising as high as the banks is identical with the width and depth of reserving lateral stressed reinforcing bar groove respectively, protects Card is detachably risen as high as the banks, and template is pluggable to be reserved in lateral stressed reinforcing bar groove.

6. according to the making mould of prefabricated panel in the logical muscle formula reinforced concrete slab structure described in claim 2, its feature It is that the thickness of end face template is identical with the width of lateral stressed reinforcing bar groove, and the height of end face template draws off channel mould with removable Plate it is highly identical, the length of end face template is with prefabricated panel width.

7. according to the making mould of prefabricated panel in the logical muscle formula reinforced concrete slab structure described in claim 2, its feature Be that reinforcing bar fixing mould bottom surface is provided with semicircle orifice, the spacing of semicircle orifice is 100mm, semicircle orifice with diameter greater than longitudinal stress Reinforcing bar 1mm, with end face template thickness, the length of reinforcing bar fixing mould requires to set the thickness of reinforcing bar fixing mould according to building module Meter, including 0.6m, 1.2m, 1.5m, 2.7m or 3.0m.