CN112095873A

CN112095873A - Prefabricated one-way superimposed sheet piece reinforced structure

Info

Publication number: CN112095873A
Application number: CN202011064312.0A
Authority: CN
Inventors: 萧树忠; 邵广超; 刘继鹏; 张玲; 张晓东
Original assignee: Jinan Changxing Construction Group Industrial Technology Co ltd
Current assignee: Jinan Changxing Construction Group Industrial Technology Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2020-12-18

Abstract

The invention discloses a splicing and reinforcing structure of prefabricated unidirectional laminated slabs, which belongs to the field of assembly type buildings and comprises more than two prefabricated slabs, wherein one prefabricated slab is provided with a connecting steel bar at the splicing position of two adjacent prefabricated slabs, the other prefabricated slab is provided with a groove, the connecting steel bars comprise a plurality of connecting steel bars, the connecting steel bars respectively extend into the grooves and are matched with the grooves, and the end parts of the connecting steel bars are connected through a constructional steel bar. Compared with the prior art, the splicing and reinforcing structure of the prefabricated unidirectional superimposed sheet has the characteristics of solving the problems of widening and cracking of the plate seam caused by the load of the splicing and reinforcing structure of the unidirectional sheet, and has good popularization and application values.

Description

Prefabricated one-way superimposed sheet piece reinforced structure

Technical Field

The invention relates to the field of assembly type buildings, in particular to a splicing and reinforcing structure for prefabricated unidirectional laminated slabs.

Background

With the rapid development of fabricated buildings, horizontal prefabricated components in concrete structures are widely applied, laminated slabs are used as the horizontal prefabricated components which are popularized and applied at present and are generally designed into two-way slabs and one-way slabs according to stress conditions, the existing design of the joints between the two one-way slabs is that two one-way slab edges are directly spliced together to form a close joint, or a post-pouring small joint of 30-50mm is reserved between the two one-way slabs, a section of reinforcing steel bar construction measure is designed above the joint between the two slabs, and the joint between the two slabs has no relatively reliable connection measure. No relatively reliable connecting measures exist among the unidirectional plates, and the joint seams among the unidirectional plates have common quality problems of gap widening, cracking and the like due to the influence of later load.

Disclosure of Invention

The technical task of the invention is to provide a prefabricated unidirectional superimposed sheet joint reinforcing structure aiming at the defects in the prior art, and the prefabricated unidirectional superimposed sheet joint reinforcing structure solves the problems of widening and cracking of a plate joint caused by load of a unidirectional plate joint.

The technical scheme adopted by the invention for solving the technical problems is as follows: the prefabricated slab comprises more than two prefabricated slabs, splicing positions among two adjacent prefabricated slabs are reserved with one connecting steel bar and the other groove, the connecting steel bars comprise a plurality of connecting steel bars, the plurality of connecting steel bars respectively extend into the grooves and are matched with the grooves, and the ends of the plurality of connecting steel bars are connected through one constructional steel bar.

The recess include with the parallel groove of coupling bar parallel and with coupling bar vertically perpendicular groove, the parallel groove include a plurality ofly, perpendicular groove is located the end in a plurality of parallel grooves and with a plurality of parallel groove intercommunication, the parallel groove the same with coupling bar's number, and correspond the setting, a coupling bar is placed to every parallel inslot, every coupling bar's end extends the perpendicular inslot respectively, the structure reinforcing bar setting at perpendicular inslot.

The tail end of each connecting steel bar is bent upwards to form a folded edge, and the constructional steel bars are arranged in the vertical grooves on the inner sides of the folded edges.

The structural steel bars are connected with the connecting steel bars in a binding mode.

The width of the splicing seam between two adjacent prefabricated plates is 50 mm. And grouting materials are arranged in the splicing seams. The grouting material is expansion mortar or fine aggregate concrete.

An additional constructional steel bar is arranged at the splicing seam between two adjacent prefabricated plates and is arranged at the upper parts of the connecting steel bars and connected with the connecting steel bars.

The additional construction steel bars and the connecting steel bars are connected in a binding mode.

Compared with the prior art, the splicing and reinforcing structure of the prefabricated unidirectional laminated slab has the following outstanding beneficial effects: the prefabricated plates are provided with a relatively reliable connecting structure, and the common quality problems of gap widening, cracking and the like caused by later-stage load influence can be avoided when the joints between the prefabricated plates are spliced.

Drawings

FIG. 1 is a front view of a splicing and reinforcing structure of a prefabricated unidirectional composite slab when two prefabricated slabs are spliced;

FIG. 2 is a plan view of the prefabricated panel shown in FIG. 1 with the connecting reinforcing bars reserved;

FIG. 3 is a cross-sectional view A-A shown in FIG. 2;

FIG. 4 is a top view of the prefabricated panel shown in FIG. 1 with a preformed groove reserved;

FIG. 5 is a cross-sectional view B-B shown in FIG. 4;

FIG. 6 is a front view of a splicing and reinforcing structure of a prefabricated unidirectional composite slab when three prefabricated slabs are spliced;

FIG. 7 is a plan view of the left prefabricated panel shown in FIG. 6, with the connecting reinforcing bars reserved;

FIG. 8 is a plan view of the right prefabricated panel shown in FIG. 6, with the connecting reinforcing bars reserved;

FIG. 9 is a plan view of the intermediate prefabricated panel shown in FIG. 6 with the grooves reserved;

FIG. 10 is a cross-sectional view C-C shown in FIG. 9;

FIG. 11 is a top view of a joint when two precast slabs are spliced;

FIG. 12 is a D-D cross-sectional view shown in FIG. 11;

FIG. 13 is a cross-sectional view E-E shown in FIG. 11;

description of reference numerals: 1. precast slab, 2, connecting steel bar, 21, folding edge, 3, groove, 31, parallel groove, 32, vertical groove, 4, construction steel bar, 5, splicing seam, 6, grouting material, 7, additional construction steel bar, 8 and cast-in-place layer concrete.

Detailed Description

The prefabricated unidirectional composite slab splice reinforcing structure of the present invention will be described in detail with reference to the accompanying drawings 1 to 13 of the specification.

The splicing and reinforcing structure of the prefabricated unidirectional laminated slab comprises more than two prefabricated slabs 1, one prefabricated slab 1 is provided with a connecting steel bar 2, the other prefabricated slab 1 is provided with a groove 3, the connecting steel bars 2 comprise a plurality of connecting steel bars, the connecting steel bars 2 respectively extend into the grooves 3 and are matched with the grooves 3, and the end parts of the connecting steel bars 2 are connected through a constructional steel bar 4.

Recess 3 include with the parallel groove 31 of coupling bar 2 parallel and with the perpendicular groove 32 of coupling bar 2 vertically, parallel groove 31 include a plurality ofly, perpendicular groove 32 is located the end of a plurality of parallel grooves 31 and communicates a plurality of parallel grooves 31, parallel groove 31 the same with the number of coupling bar 2, and correspond the setting, place a coupling bar 2 in every parallel groove 31, every coupling bar 2's end extends respectively to in the perpendicular groove 32, construction reinforcing bar 4 set up in perpendicular groove 32.

The end of each connecting steel bar 2 is bent upwards to form a folded edge 21, and the construction steel bars 4 are arranged in the vertical grooves 32 on the inner sides of the folded edges 21. The folded edge 21 and the construction steel bar 4 are clamped in the prefabricated plate, so that cracking and moving are avoided, and the abutted seam is widened.

The structural steel bars 4 are connected with the connecting steel bars 2 in a binding mode.

The width of the splicing seam 5 between two adjacent prefabricated panels 1 is 50 mm. And a grouting material 6 is arranged in the splicing seams 5. The grouting material 6 is expansion mortar or fine aggregate concrete.

An additional construction steel bar 7 is arranged at the splicing seam 5 between two adjacent prefabricated plates 1, and the additional construction steel bar 7 is arranged at the upper part of the connecting steel bars 2 and connects the connecting steel bars. The coupling strength between the two prefabricated panels 1 is increased.

The additional construction steel bars 7 are connected with the connecting steel bars 2 in a binding mode.

When two prefabricated plates 1 are provided, connecting steel bars 2 are reserved on one prefabricated plate and grooves 3 are reserved on the other prefabricated plate at the splicing position of the two prefabricated plates 1.

When the number of the prefabricated plates 1 is three, the prefabricated plates on two sides are respectively reserved with connecting steel bars 2, and the two sides of the prefabricated plate in the middle are respectively reserved with grooves 3.

The distance between the grooves 3 of the prefabricated plates 1 reserved with the grooves 3 is matched with the distance between the connecting steel bars 2 of the prefabricated plates 1 reserved with the connecting steel bars 2, the prefabricated plates with the grooves 3 are placed when the two prefabricated plates 1 are spliced, then the prefabricated plates reserved with the connecting steel bars 2 are spliced on the prefabricated plates with the grooves 3, so that the connecting steel bars 2 are completely placed in the grooves 3, a constructional steel bar 4 is bound at the end part of the connecting steel bar 2, when the upper cast-in-place layer concrete 8 is poured in the laminated slab, the grooves 3 can be poured and filled together by the cast-in-place layer concrete 8, reliable connection and reinforcement measures are provided between the two prefabricated plates, and later-period splicing crack is avoided.

The above-mentioned embodiments are only for understanding the present invention, and are not intended to limit the technical solutions of the present invention, and those skilled in the art can make various changes or modifications based on the technical solutions described in the claims, and all equivalent changes or modifications should be covered by the scope of the claims of the present invention. The present invention is not described in detail, but is known to those skilled in the art.

Claims

1. Prefabricated one-way superimposed sheet piece reinforced structure, characterized by: including prefabricated plate more than two, concatenation department among two adjacent prefabricated plates, a reservation connecting reinforcement, another reservation recess, connecting reinforcement includes many, and many connecting reinforcement stretch into respectively in the recess and cooperate with the recess, and many connecting reinforcement's tip links to each other through a constructional steel bar.

2. The precast unidirectional laminated slab splice reinforcing structure as set forth in claim 1, wherein: the recess include with the parallel groove of coupling bar parallel and with coupling bar vertically perpendicular groove, the parallel groove include a plurality ofly, perpendicular groove is located the end in a plurality of parallel grooves and with a plurality of parallel groove intercommunication, the parallel groove the same with coupling bar's number, and correspond the setting, a coupling bar is placed to every parallel inslot, every coupling bar's end extends the perpendicular inslot respectively, the structure reinforcing bar setting at perpendicular inslot.

3. The precast unidirectional laminated slab splice reinforcing structure as set forth in claim 2, wherein: the tail end of each connecting steel bar is bent upwards to form a folded edge, and the constructional steel bars are arranged in the vertical grooves on the inner sides of the folded edges.

4. The precast unidirectional laminated slab splice reinforcing structure as set forth in claim 1, wherein: the structural steel bars are connected with the connecting steel bars in a binding mode.

5. The precast unidirectional laminated slab splice reinforcing structure as set forth in claim 1, wherein: the width of a splicing seam between two adjacent prefabricated plates is 50mm, and grouting materials are arranged in the splicing seam.

6. The precast unidirectional laminated slab splice reinforcing structure of claim 5, wherein: an additional constructional steel bar is arranged at the splicing seam between two adjacent prefabricated plates and is arranged at the upper parts of the connecting steel bars and connected with the connecting steel bars.

7. The precast unidirectional laminated slab splice reinforcing structure of claim 6, wherein: the additional construction steel bars and the connecting steel bars are connected in a binding mode.