CN215888780U

CN215888780U - Close formula connected node that pieces together of one-way coincide floor

Info

Publication number: CN215888780U
Application number: CN202121195050.1U
Authority: CN
Inventors: 刘婷; 张志明; 祖龙
Original assignee: Broad Homes Industrial Hangzhou Co ltd
Current assignee: Broad Homes Industrial Hangzhou Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-02-22
Anticipated expiration: 2031-05-31

Abstract

The utility model provides a close-spliced connecting node of a one-way composite floor slab. The one-way composite floor close-fitting type connecting node comprises two butted one-way composite floors, each one-way composite floor comprises a prefabricated layer and a cast-in-place layer, each one-way composite floor close-fitting type connecting node also comprises a notch arranged at the joint of the two one-way composite floors, the notch is concavely arranged on the prefabricated layer and does not penetrate through the prefabricated layer, and the notch is arranged close to the cast-in-place layer; concrete is poured in the groove opening and the upper end of the prefabricated layer to form the cast-in-place layer; the notches are arranged in the length direction of the unidirectional composite floor slab at intervals. Compared with the prior art, the one-way laminated floor close-spliced connecting node provided by the utility model has the advantages that the traditional spliced steel bar is eliminated, the steel content is reduced, and meanwhile, the cast-in-place layer and the notch are simultaneously cast, so that the thickness of the cast-in-place layer and the bearing capacity of the floor are ensured.

Description

Close formula connected node that pieces together of one-way coincide floor

Technical Field

The utility model relates to the technical field of assembly type buildings, in particular to a close-spliced connecting node of a one-way composite floor slab.

Background

With the increasing growth of building industrialization, the prefabricated floor slab is applied. The composite floor slab is generally applied because the composite floor slab has the advantages of reducing the complicated procedures of on-site formwork erecting and formwork removing and shortening the construction period. The laminated floor slabs are constructed in a joint butt joint mode on site, and the integral joints or the separated joints are determined according to the stress condition of the floor slabs in the joint splicing mode of the floor slabs. Aiming at the laminated floor slab with unidirectional stress, the tight splicing joint connection structure is simple, the tensile force of the steel bars in the laminated floor slab cannot be transmitted, the bottom of the splicing joint is easy to crack, and the condition of water seepage is easy to cause.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a close-splicing type connecting node of a one-way composite floor slab, which can improve the close-splicing performance of the one-way composite floor slab.

The technical scheme of the utility model is as follows: a close-fitting type connecting node of one-way composite floor slabs comprises two butted one-way composite floor slabs, each one-way composite floor slab comprises a prefabricated layer and a cast-in-place layer, each close-fitting type connecting node of one-way composite floor slabs further comprises a notch arranged at the joint of the two one-way composite floor slabs, the notch is concavely arranged on the prefabricated layer and does not penetrate through the prefabricated layer, and the notch is arranged close to the cast-in-place layer; concrete is poured in the groove opening and the upper end of the prefabricated layer to form the cast-in-place layer; the notches are arranged in the length direction of the unidirectional composite floor slab at intervals.

In the above-mentioned scheme, through designing a plurality of notches that are interrupted, form cast-in-place layer jointly with the upper end concreting on prefabricated layer in the notch to improve the whole close piece performance of its close piece department after the butt joint of one-way coincide floor, and cancelled the piece reinforcing bar among the traditional connected node, can reduce steel content, be applicable to in the one-way coincide floor butt joint field.

Preferably, one-way coincide floor close-fitting formula connected node still includes net cloth and mortar, the prefabricated layer is kept away from one side of notch and is equipped with the recess, net cloth fill in the recess and pass through the mortar is fixed.

Set up the recess in the bottom on prefabricated layer to pack net cloth and mortar in the recess, can effectively prevent piece joint bottom department fracture and infiltration phenomenon, anti-crack effect is better.

Preferably, the lower end face of the mortar is flush with the lower end face of the prefabricated layer.

Preferably, the mesh cloth is alkali-resistant mesh cloth.

Preferably, when the two unidirectional composite floor slabs are butted, the grooves on the unidirectional composite floor slabs jointly form a long rectangular groove.

Preferably, the slots extend for the same length in both preform layers.

Preferably, when the two unidirectional composite floor slabs are butted, the notches on the unidirectional composite floor slabs form a long rectangular notch together.

Preferably, the extension length of the notch on the single unidirectional composite floor slab is 300mm, and the depth of the recess is 30 mm; the distance between the plurality of notches is more than or equal to 300 mm.

Preferably, close piece formula connected node of one-way coincide floor still includes logical long constructional steel bar, logical long constructional steel bar is located in the cast-in-place layer and be located the top of notch, logical long constructional steel bar is followed the length direction of one-way coincide floor extends.

Preferably, prefabricated in situ is equipped with latticed end muscle, be equipped with latticed gluten in the cast-in-place layer, be equipped with the truss between end muscle and the gluten, the truss is arranged a plurality ofly on the width direction of one-way coincide floor.

Compared with the related technology, the utility model has the beneficial effects that:

for the unidirectional composite floor slab, the traditional abutted seam steel bars are omitted, the steel content is reduced, and meanwhile, the cast-in-place layer and the notch are cast simultaneously, so that the thickness of the cast-in-place layer and the bearing capacity of the floor slab are ensured;

and secondly, filling flexible anti-crack mortar and alkali-resistant mesh cloth in the grooves at the bottoms of the abutted seams at the same time to achieve the dual anti-cracking effect.

Drawings

Fig. 1 is a schematic top view of a close-coupled connection node of a unidirectional composite floor slab provided by the present invention, with a cast-in-place layer removed;

fig. 2 is a schematic sectional view of a close-coupled connection node of a unidirectional composite floor slab provided by the utility model.

In the drawings: 1-unidirectional composite floor slab, 11-prefabricated layer, 12-cast-in-place layer, 2-notch, 3-mortar, 4-groove, 5-grid cloth, 6-through long constructional steel bar, 7-bottom bar, 8-gluten and 9-truss.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 1 and fig. 2, the close-coupled connection node of the unidirectional composite floor slab provided by the embodiment comprises two butted unidirectional composite floor slabs 1, notches 2, mortar 3, grooves 4, grid cloth 5, through-length constructional steel bars 6, bottom bars 7, gluten 8 and trusses 9. The unidirectional composite floor slab 1 comprises a prefabricated layer 11 and a cast-in-place layer 12 arranged at the upper end of the prefabricated layer 11.

As shown in fig. 1, the notches 2 are arranged at the butt joints of the prefabricated layers 11 of the two butted unidirectional composite floor slabs 1. The extension lengths of the notches 2 on the two prefabricated layers 11 are the same, and the shapes of the notches are the same, so that after the two unidirectional composite floor slabs 1 are butted, the notches 2 on the two unidirectional composite floor slabs form a long rectangular notch together. The plurality of notches 2 are arranged at intervals in the length direction L of the unidirectional composite floor slab 1. The arrangement distance of the plurality of notches 2 is more than or equal to 300 mm.

As shown in fig. 2, the notch 2 is recessed on the prefabricated layer 11 and does not penetrate through the prefabricated layer 11. The extension length of the notch 2 on the single unidirectional composite floor slab 1 is 300mm, and the depth of the recess is 30 mm. And the spliced reinforcing steel bars are eliminated in the notch 2, so that the steel content is reduced. Meanwhile, the cast-in-situ layer 12 and the notch 2 are simultaneously poured, so that the thickness of the cast-in-situ layer and the bearing capacity of the floor slab are ensured.

One side of the prefabricated layer 11, which is far away from the notch 2, is provided with a groove 4, and when the two unidirectional composite floor slabs 1 are butted, the grooves 4 on the two unidirectional composite floor slabs jointly form a long rectangular groove (as shown in fig. 2). And the groove 4 is filled with gridding cloth 5 and mortar 3. The mortar 3 is used for fixing the mesh cloth 5 filled in the groove 4. The lower end face of the mortar 3 is flush with the lower end face of the prefabricated layer 11. The grid cloth 5 is alkali-resistant grid cloth, the mortar 3 is flexible anti-cracking mortar, and the combination of the two can increase the crack resistance of the bottom of the abutted seam.

As shown in fig. 2, the full length construction steel bar 6 is arranged in the cast-in-place layer 12 and above the slot 2. The through-length constructional steel bars 6 extend along the length direction of the unidirectional composite floor slab 1. In this embodiment, three through-construction bars 6 are uniformly distributed above the notch 2.

The prefabricated layer 12 is internally provided with the bottom ribs 7, and the bottom ribs 7 are in a criss-cross grid shape. Be equipped with gluten 8 in the cast-in-place layer 12, gluten 8 is vertically and horizontally staggered's latticed.

The truss 9 is arranged between the bottom rib 7 and the surface rib 8. The trusses 9 are arranged in plurality in the width direction of the unidirectional composite floor slab 1.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A close-fitting type connecting node of one-way composite floor slabs comprises two butted one-way composite floor slabs, wherein each one-way composite floor slab comprises a prefabricated layer and a cast-in-place layer; the spliced reinforcing steel bars are cancelled in the notch; concrete is poured in the groove opening and the upper end of the prefabricated layer to form the cast-in-place layer; the notches are arranged in the length direction of the unidirectional composite floor slab at intervals.

2. The one-way composite floor close-fitting type connection node as claimed in claim 1, further comprising a mesh cloth and mortar, wherein a groove is formed in one side of the prefabricated layer away from the notch, and the mesh cloth is filled in the groove and fixed through the mortar.

3. The close-fitting type connecting joint of the unidirectional composite floor slab as claimed in claim 2, wherein the lower end surface of the mortar is flush with the lower end surface of the prefabricated layer.

4. The close-fitting type connection node of unidirectional composite floor slab as claimed in claim 2, wherein the mesh cloth is alkali-resistant mesh cloth.

5. The close-fitting type connecting joint of the unidirectional composite floor slabs as claimed in claim 2, wherein the grooves on the two unidirectional composite floor slabs jointly form a long rectangular groove when the two unidirectional composite floor slabs are butted.

6. A one-way composite floor close-fitting type connecting joint according to any one of claims 1 to 5, wherein the extension lengths of the notches on the two prefabricated layers are the same.

7. The close-fitting type connecting joint of the unidirectional composite floor slabs as claimed in any one of claims 1 to 5, wherein the notches of the two unidirectional composite floor slabs are formed into a rectangular notch when the two unidirectional composite floor slabs are butted.

8. The close-fitting type connecting joint of the unidirectional composite floor slabs as claimed in any one of claims 1 to 5, wherein the extension length of the notches on the single unidirectional composite floor slab is 300mm, and the depth of the recess is 30 mm; the distance between the plurality of notches is more than or equal to 300 mm.

9. The close-fitting type connection node of the unidirectional composite floor slab as claimed in any one of claims 1 to 5, further comprising a through-length construction steel bar, wherein the through-length construction steel bar is arranged in the cast-in-situ layer and above the notch, and the through-length construction steel bar extends along the length direction of the unidirectional composite floor slab.

10. The close-fitting type connecting joint of the unidirectional composite floor slab as claimed in any one of claims 1 to 5, wherein a latticed bottom rib is arranged in the prefabricated layer, a latticed gluten is arranged in the cast-in-place layer, a plurality of trusses are arranged between the bottom rib and the gluten, and the trusses are distributed in the width direction of the unidirectional composite floor slab.