CN209854778U

CN209854778U - Post-cast strip support-free structure

Info

Publication number: CN209854778U
Application number: CN201920305043.9U
Authority: CN
Inventors: 陈小俊; 陈肇星
Original assignee: Ningbo De Style Building Technology Co Ltd; Guohua Construction Co Ltd
Current assignee: Ningbo De Style Building Technology Co Ltd; Guohua Construction Co Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2019-12-27
Anticipated expiration: 2029-03-11

Abstract

The utility model discloses a bearing structure is exempted from in post-cast strip, including cast in advance concrete layer, die block board and load steel pipe, be respectively two sections set up the built-in fitting in the cast in advance concrete layer, the built-in fitting is including setting up pre-buried hole in the cast in advance concrete layer is in with the setting the anchor assembly that is used for closing the bolt soon in the built-in hole, the die block board set up in the below on cast in advance concrete layer, the load steel pipe set up in the below of die block board, die block board and load steel pipe pass through mountain type card and bolt with it is fixed to cast in advance the concrete layer, in two sections pour the concrete between the cast in advance concrete layer in order to form the post-cast strip. The utility model discloses a mode that sets up the built-in fitting fixes the die block board in order to pour the post-cast strip, has cancelled original loaded down with trivial details mode of setting up the support frame in die block board below secondary, and this kind of support mode of exempting from has simple structure, save material, shaping is of high quality and the laborsaving advantage that saves labour.

Description

Post-cast strip support-free structure

Technical Field

The utility model relates to a construction technical field specifically relates to a bearing structure is exempted from to post-cast strip.

Background

In the construction of a building concrete structure, harmful cracks possibly generated by the fact that the cast-in-place reinforced concrete structure shrinks unevenly or settles unevenly are prevented, temporary construction joints are reserved at corresponding positions of a foundation slab, a wall, a beam, an upper floor slab and the like according to design requirements, the structure is divided into a plurality of parts temporarily, the construction joints are poured after a plurality of times of internal shrinkage of the components, and the zone where the structures are connected into a whole is a post-pouring zone.

In the existing post-cast strip construction, according to the process requirement of the post-cast strip, after the post-cast concrete pouring is finished for a certain time, namely the internal shrinkage of the structure is completed, the concrete strength reaches the standard, and the sundries in the post-cast strip need to be cleaned up, the post-cast strip concrete is allowed to be poured.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the post-cast strip support-free structure is provided, a formwork can be supported without secondary erection of a support frame, and the post-cast strip support-free structure has the advantages of being simple in structure, saving in materials and labor and saving in time.

The specific technical scheme is as follows:

the utility model provides a bearing structure is exempted from to post-cast strip, includes cast in advance concrete layer, die block board and bearing steel pipe, sets up the built-in fitting respectively in two sections cast in advance concrete layer, the built-in fitting is including setting up the pre-buried hole in the cast in advance concrete layer and setting up the anchor assembly that is used for closing the bolt soon in the pre-buried hole, the die block board set up in the below of cast in advance concrete layer, the bearing steel pipe set up in the below of die block board, die block board and bearing steel pipe pass through mountain type card and bolt with cast in advance concrete layer is fixed, pours the concrete in order to form the post-cast strip between two sections cast in advance concrete layer.

Preferably, the anchoring part comprises a protective sleeve at the outer end and a hexagonal cavity at the inner end, the hexagonal cavity is communicated with the protective sleeve, a hexagonal nut circumferentially limiting the hexagonal cavity is accommodated in the hexagonal cavity, and the width of the hexagonal nut is greater than the inner diameter of the protective sleeve.

Preferably, the bottom template is provided with a through hole matched with the embedded part.

Preferably, a protective sleeve is arranged in the through hole.

Preferably, the force bearing steel pipe is a double-row steel pipe.

The positive effects of the technical scheme are as follows:

the utility model discloses a mode that sets up the built-in fitting comes fixed die block board in order to pour the post-cast strip, cancelled original loaded down with trivial details mode that must the secondary set up the support frame in the die block board below, this kind of support mode of exempting from, not only simple process, construction speed is fast, and save material, the shaping is of high quality, it is laborsaving to save labour, especially to the construction of the post-cast strip of large tracts of land, the process of setting up the support frame of secondary has been avoided, the efficiency of construction is greatly improved, neither influence building structure, can accord with the regulation of construction specification again, construction period can also be shortened.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a sectional view taken along line B of FIG. 2;

fig. 4 is a cross-sectional view taken along line C of fig. 2.

In the attached drawings, 1, a concrete layer is cast in advance; 2. post-pouring a belt; 3. a bottom template; 31. a through hole; 4. a force bearing steel pipe; 5. a mountain-shaped card; 6. a bolt; 7. embedding parts; 71. pre-burying a hole; 72. an anchoring member; 721. protecting the sleeve; 722. a hexagonal cavity; 723. a hexagonal nut.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are combined with the accompanying drawings to specifically explain the operations provided by the present invention.

Please refer to fig. 1 to 4, which show a post-cast strip 2 support-free structure, including a pre-cast concrete layer 1, a post-cast strip 2, a bottom form 3, a force-bearing steel pipe 4, a mountain-shaped clamp 5 and a bolt 6, wherein the bottom form 3 is fixed below the pre-cast concrete layer 1 through an embedded part 7 and the bolt 6, and is cast between two sections of the pre-cast concrete layer 1 to form the post-cast strip 2, specifically, the embedded part 7 is arranged in the two sections of the pre-cast concrete layer 1, correspondingly, through holes 31 matched with the embedded part 7 are arranged at two ends of the bottom form 3, in order to enhance the bearing strength of the bottom form 3, the force-bearing steel pipe 4 is arranged below the bottom form 3, and finally, the two rows of the force-bearing steel pipe are fixed through the mountain-shaped clamp 5 and the bolt 6. The utility model discloses a mode that sets up built-in fitting 7 fixes die block board 3 in order to pour post-cast strip 2, has cancelled original loaded down with trivial details mode of setting up the support frame in 3 below secondaries of die block board, this kind of support mode of exempting from, simple process not only, construction speed is fast, save material moreover, the shaping is of high quality, saves labour laborsaving.

The embedded part 7 includes an embedded hole 71 provided in the precast concrete layer 1, an anchoring member 72 for screwing the bolt 6 is anchored in the embedded hole 71, and the anchoring member 72 includes a protective sleeve 721 at an outer end (i.e., a side close to the bottom form 3) and a hexagonal cavity 722 at an inner end (i.e., a side far from the bottom form 3), i.e., a cavity having a regular hexagonal cross section, and the hexagonal cavity 722 is communicated with the protective sleeve 721. Hexagonal nut 723 is disposed in hexagonal cavity 722 and circumferentially limits hexagonal cavity 722, that is, hexagonal nut 723 is clamped in hexagonal cavity 722 and is clamped by hexagonal cavity 722 so as not to circumferentially rotate. The hexagonal nut 723 has a width greater than the inner diameter of the protection sleeve 721, i.e., the diameter of a circumscribed circle of the regular hexagonal cross-section of the hexagonal nut 723 is greater than the inner diameter of the protection sleeve 721, so that the hexagonal nut is caught by the protection sleeve 721 and cannot move in the axial direction of the protection sleeve 721. In summary, the bolts 6 are screwed into the hexagonal nuts 723 in the anchors 72 in the embedded holes 71, and the fixed connection between the bottom form 3 and the precast concrete layer 1 is achieved both circumferentially and axially.

In addition, a protective sleeve 721 is also arranged in the through hole 31 of the bottom template 3, so that the through hole 31 can be protected, the service life of the through hole 31 can be prolonged, and the service life of the bolt 6 can be prolonged.

The construction method using the post-cast strip 2 support-free structure comprises the following steps:

step 1: arranging an embedded part 7 comprising an embedded hole 71 and an anchoring part 72 when pouring the cast-in-place concrete layer 1;

step 2: aligning the through hole 31 on the bottom template 3 with the pre-buried hole 71 and righting the position of the bottom template 3;

and step 3: screwing the bolt 6 into the hexagonal nut 723 in the anchor 72 along the through hole 31;

and 4, step 4: installing double rows of bearing steel pipes 4 to resist the pressure transmitted to the bottom formwork by the poured post-cast strip concrete;

and 5: the bottom template 3 and the precast concrete layer 1 are fixedly connected through fixing the mountain-shaped clamp 5 and the nut;

step 6: and finishing pouring of the post-cast strip 2.

The utility model discloses a mode that sets up built-in fitting 7 comes fixed die block board 3 in order to pour post-cast strip 2, cancelled original loaded down with trivial details mode of setting up the support frame at 3 below secondaries of die block board, this kind of support mode of exempting from, not only simple process, construction speed is fast, and save material, the shaping is of high quality, it is laborsaving to save labour, especially to the construction of large tracts of land post-cast strip 2, the process of setting up the support frame of secondary has been avoided, the efficiency of construction is greatly improved, neither influence building structure, can accord with the regulation of construction specification again, construction period can also be shortened.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims

1. A post-cast strip support-free structure is characterized by comprising a pre-cast concrete layer (1), a bottom template (3) and a force-bearing steel pipe (4), wherein embedded parts (7) are respectively arranged in the two pre-cast concrete layers (1), the embedded part (7) comprises a pre-embedded hole (71) arranged in the cast-in-place concrete layer (1) and an anchoring part (72) arranged in the pre-embedded hole (71) and used for screwing a bolt (6), the bottom template (3) is arranged below the cast-in-place concrete layer (1), the bearing steel pipe (4) is arranged below the bottom template (3), the bottom template (3) and the bearing steel pipe (4) are fixed with the precast concrete layer (1) through a mountain-shaped clamp (5) and a bolt (6), and pouring concrete between the two sections of the precast concrete layers (1) to form a post-cast strip (2).

2. A post-cast strip support-free structure as claimed in claim 1, wherein the anchor member (72) comprises an outer protective sleeve (721) and an inner hexagonal cavity (722), the hexagonal cavity (722) is communicated with the protective sleeve (721), a hexagonal nut (723) circumferentially limiting the hexagonal cavity (722) is arranged in the hexagonal cavity (722), and the width of the hexagonal nut (723) is larger than the pipe inner diameter of the protective sleeve (721).

3. The post-cast strip support-free structure according to claim 1, wherein the bottom template (3) is provided with through holes (31) matched with the embedded parts (7).

4. A post-cast strip support-free structure according to claim 3, wherein a protective sleeve (721) is provided in the through hole (31).

5. The post-cast strip support-free structure as claimed in claim 1, wherein the force bearing steel pipes (4) are double rows of steel pipes.