CN217232346U

CN217232346U - Cast-in-place area of assembled coincide floor exempts from to support construction equipment

Info

Publication number: CN217232346U
Application number: CN202220671584.5U
Authority: CN
Inventors: 郑吉�; 刘永领; 熊亮; 龚德斌; 李锐
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-19
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a support-free construction device for cast-in-place belts of assembled composite floor slabs, which comprises a precast concrete composite floor slab, a connecting piece and a bottom plate, the connecting piece is pre-buried and fixed at the bottom of the precast concrete composite floor slab, the connecting piece comprises a connecting part, a second anti-falling head, a first fixing hole and a first fixing bolt, the second anti-falling head is fixedly arranged at the bottom of the connecting part, the first fixing hole penetrates through the second anti-falling head and is arranged in the connecting part, the bottom plate is attached to the bottom surface of the precast concrete composite floor slab, is fixed on the connecting part through the first fixing bolt which is in threaded connection with the first fixing hole, the bottom plate with the laminating of precast concrete coincide floor bottom surface has solved cast in situ concrete slab band support system and has taken the big problem of construction space.

Description

Cast-in-place area of assembled coincide floor exempts from to support construction equipment

Technical Field

The utility model relates to a construction technical field, more specifically relates to a cast-in-place area of assembled coincide floor exempts from to support construction equipment.

Background

In recent years, with the continuous development of assembly type buildings, precast concrete members are widely used in the building industry, wherein precast concrete composite slabs are widely used in the assembly type buildings as one of the most common precast concrete members at present. According to the relevant specification, the precast concrete laminated floors are connected by cast-in-place concrete. According to the traditional construction method, a support frame body needs to be arranged under a cast-in-place concrete slab band, the construction is complex, the economic benefit is poor, the frame body occupies a large construction space, and the traffic and construction of constructors are affected. Moreover, under the construction dynamic load, the laminated slab is easy to vibrate, so that the concrete leakage of the cast-in-place slab band of the laminated slab is caused.

The prior art has the following defects: (1) according to the traditional construction method, a support frame body is required to be arranged at the bottom of the laminated slab cast-in-place slab band, a cast-in-place slab band template is erected, reinforcing steel bars are bound, and concrete is poured. The support frame body not only occupies the construction space, so that the personnel passing and construction are limited; (2) and under the construction dynamic load, the laminated slab is easy to vibrate, so that the concrete leakage of the cast-in-place slab band of the laminated slab is caused, the construction is complex and the economic benefit is poor.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects or the improvement requirements of the prior art, the utility model provides a support-free construction device for cast-in-place belts of assembled composite floor slabs, which comprises a connecting piece and a bottom plate, wherein the connecting piece passes through the bottom plate and is fixed at the bottom of the precast concrete composite floor slab, the connecting piece comprises a first anti-drop head, a connecting part, a second anti-drop head, a first fixing hole and a first fixing bolt, wherein, the first anti-drop head and the second anti-drop head are respectively fixed at two ends of the connecting part, the first anti-drop head and the second anti-drop head play roles of bearing tension and preventing dropping, the opening of the first fixing hole faces downwards, when a bottom plate needs to be installed, the bottom plate is upwards attached to the bottom surface of the precast concrete composite floor slab, then pass the bottom plate through first fixing bolt, closely just rigidity is great with precast concrete coincide floor laminating, has solved the problem that cast in situ concrete slab band braced system occupy the construction space big.

In order to realize the above-mentioned purpose, the utility model provides a cast-in-place area of assembled coincide floor exempts from to support construction equipment, including precast concrete coincide floor, still include:

the prefabricated concrete composite floor slab comprises a prefabricated concrete composite floor slab, and is characterized by also comprising a connecting piece and a bottom plate, wherein the connecting piece is pre-buried and fixed at the bottom of the prefabricated concrete composite floor slab;

the connecting piece includes connecting portion, second anticreep head, first fixed orifices and first fixing bolt, the fixed locating of second anticreep head connecting portion bottom, first fixed orifices passes the second anticreep head is located in the connecting portion, the bottom plate laminating precast concrete coincide floor bottom surface, through first fixing bolt is fixed in on the connecting portion, the bottom plate with the laminating of precast concrete coincide floor bottom surface.

Further, the connecting piece includes first anticreep head, first anticreep head is fixed to be located the connecting piece tip, with second anticreep head sets up immediately, first anticreep head, connecting portion with second anticreep head is pre-buried to be fixed in precast concrete coincide floor bottom, second anticreep head bottom surface with precast concrete coincide floor bottom surface parallel and level guarantees first fixed orifices exposes.

Furthermore, the bottom plate includes overlap joint piece, second fixed orifices and second fixing bolt, the overlap joint piece is the echelonment, with bottom plate integrated into one piece locates the bottom plate side, set up on the overlap joint piece the second fixed orifices, two are adjacent the overlap joint piece gomphosis of bottom plate is fixed, just the second fixed orifices aligns with one another with one heart, second fixing bolt spiro union is fixed in the second fixed orifices makes two the overlap joint piece is fixed.

Further, the bottom plate includes a plurality of through holes, the positions and the number of which are the same as those of the connecting members.

Further, the connecting piece includes the sponge, the sponge fill in the first fixed orifices, take out after the precast concrete coincide floor is pour and is solidified the sponge, first fixing bolt with first fixed orifices threaded connection.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:

1. the utility model provides a cast-in-place area of assembled coincide floor exempts from to support construction equipment, including connecting piece and bottom plate, wherein, the connecting piece passes the bottom plate, be fixed in precast concrete coincide floor bottom with it, be equipped with the truss muscle in the precast concrete coincide floor, with the connecting piece pre-buried in the bottom during precast concrete coincide floor preparation, when cast in situ concrete between precast concrete coincide floor, fix a position the bottom plate between two precast concrete coincide floors, then pass through the connecting piece fastening with the bottom plate and laminate in precast concrete coincide floor bottom surface, need not to support in ground at bottom plate below installing support, construction space has been saved.

2. The utility model provides a cast-in-place area of assembled coincide floor exempts from to support construction equipment, the connecting piece of adoption includes first anticreep head, connecting portion, the second anticreep head, first fixed orifices and first fixing bolt, wherein, first anticreep head and second anticreep head are fixed in the connecting portion both ends respectively, first anticreep head and second anticreep head play the effect of bearing pulling force and anticreep, first fixed orifices opening is down, when needing mounting plate, upwards laminate the bottom plate at precast concrete coincide floor bottom surface, then pass the bottom plate through first fixing bolt, it is inseparable and rigidity great with the laminating of precast concrete coincide floor, the problem that cast-in-place concrete slab band support system occupies construction space greatly has been solved.

Drawings

Fig. 1 is a sectional view of a support-free construction device for a cast-in-place strip of an assembled composite floor slab according to an embodiment of the present invention;

fig. 2 is a sectional view a-a of a support-free construction device for a cast-in-place strip of an assembled composite floor slab according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a connecting member of a cast-in-place strip support-free construction device for an assembled composite floor slab according to an embodiment of the present invention;

fig. 4 is that the embodiment of the utility model provides a cast-in-place area of assembled coincide floor exempts from to support construction equipment's local enlarged picture B.

In all the figures, the same reference numerals denote the same features, in particular: the construction method comprises the following steps of 1-truss ribs, 2-precast concrete composite floor slabs, 3-connecting pieces, 4-bottom plates, 31-first anti-dropping heads, 32-connecting parts, 33-second anti-dropping heads, 34-first fixing holes, 35-first fixing bolts, 41-lap joint blocks, 42-second fixing holes and 43-second fixing bolts.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4, this embodiment provides a support-free construction device for cast-in-place belt of fabricated composite floor slab, including a connecting member 3 and a bottom plate 4, wherein the connecting member 3 passes through the bottom plate 4, and is fixed at the bottom of the composite floor slab 2 made of precast concrete, a truss rib 1 is arranged in the composite floor slab 2 made of precast concrete, the connecting member 3 is pre-embedded at the bottom when the composite floor slab 2 made of precast concrete is made, when concrete is cast in place between the composite floor slab 2 made of precast concrete, the bottom plate 4 is positioned between two composite floor slabs 2 made of precast concrete, and then the bottom plate 4 is fastened and attached to the bottom surface of the composite floor slab 2 made of precast concrete through the connecting member 3, and there is no need to mount a support below the bottom plate 3 to support on the ground, thereby saving the construction space.

Further, as shown in fig. 1-4, the connecting member 3 includes a first anti-drop head 31, a connecting portion 32, a second anti-drop head 33, a first fixing hole 34 and a first fixing bolt 35, wherein the first anti-drop head 31 and the second anti-drop head 33 are respectively fixed at two ends of the connecting portion 32, preferably, the first anti-drop head 31 and the second anti-drop head 33 are integrally formed to enhance the structural strength, the first anti-drop head 31 and the second anti-drop head 33 both protrude from the side surface of the connecting portion 32, after being pre-embedded and fixed on the prefabricated mixed-soil composite floor slab 2, the first anti-drop head 31 and the second anti-drop head 33 play a role of bearing tension and preventing dropping, further, the first fixing hole 34 is a threaded hole, the second anti-drop head 33 penetrates into the connecting portion 32, the opening faces downwards, when the connecting member 3 is pre-embedded, a sponge or a filler is placed in the first fixing hole 34 to prevent concrete from entering into a blockage, and when the bottom slab 4 needs to be installed, with bottom plate 4 upwards laminating in 2 bottoms sides of precast concrete coincide floor slab, then pass bottom plate 4 through first fixing bolt 35, make it closely and keep certain rigidity with precast concrete coincide floor slab 2 laminating, be equipped with a plurality of through-holes on the bottom plate 4, correspond with the position and the quantity of connecting piece 3.

Further, as shown in fig. 1-4, the bottom plate 4 includes a lap joint block 41, a second fixing hole 42 and a second fixing bolt 43, wherein the lap joint block 41 is provided at a side edge of the bottom plate 4, preferably, the bottom plate 4 is made of steel plate and is of a flat plate structure, the lap joint block 41 is of a step shape, the lap joint blocks 41 at the outer sides of the two bottom plates 4 are mutually embedded to ensure that the lap joint is smooth and excessive without relative displacement, when a plurality of bottom plates 4 are adjacent, the side edges are sequentially lap-jointed, further, a vertically through second fixing hole 42 is provided on the lap joint block 41, the hole is a threaded hole, the second fixing bolt 43 passes through the second fixing hole 42 to tightly and fixedly connect the two lap joint blocks 41, the sealing strength at the joint of the two bottom plates 4 is enhanced, slurry leakage during cast-in-place concrete is prevented, and it is ensured that the cast-in-place slab is not coiled, after the concrete is solidified, the second fixing bolt 43 is unscrewed, the bottom plate 4 is taken down, and the turnover and reuse can be realized, so that the problem that the cast-in-place concrete slab band supporting system occupies a large construction space is solved.

Further, the implementation process of the support-free construction device in this embodiment includes:

the method comprises the following steps: arranging an embedded part, plugging the first fixing hole 34 of the connecting piece 3 with sponge after the reinforcement of the precast concrete composite floor slab 2 and the pre-embedding of the pipeline are finished, preventing the concrete from entering a bolt hole, fixing the embedded part on the bottom membrane of the precast concrete composite floor slab 2 at a designed position, and pouring the concrete;

step two: installing a first bottom plate, after the precast concrete composite floor slab 2 is hoisted, adjusting the position and the elevation, pasting adhesive tapes at the bottom of the precast concrete composite floor slab 2 on two sides of a cast-in-place slab band, taking out sponge, pasting the bottom plate 4 to the bottom of the composite floor slab, aligning a hole for fixing on the bottom plate 4 to a first fixing hole 34, sleeving a gasket on a first fixing bolt 35, penetrating the bottom plate 4 to be fixed on the precast concrete composite floor slab 2, fastening the bottom plate and the prefabricated concrete composite floor slab through bolts to ensure that the bottom plate and the prefabricated concrete composite floor slab are tightly attached to each other, screwing off the first fixing bolt 35 after pouring concrete and pouring are completed and the strength of a detached bottom die is reached, taking down the bottom plate 4, and using the prefabricated concrete composite floor slab in a turnover mode.

Step three: and (3) mounting the subsequent bottom plate 4, wherein the room is opened and the depth size can be changed, so that the bottom plate 4 can be spliced for use, in this case, after the first bottom plate 4 is mounted, the lap joint blocks 41 on the side surfaces of the subsequent bottom plate 4 are embedded into the lap joint blocks 41 on the side surfaces of the first bottom plate 4, and then the step 2 is repeated for mounting.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The support-free construction device for the cast-in-place belt of the assembled composite floor slab comprises a precast concrete composite floor slab (2), and is characterized by further comprising a connecting piece (3) and a bottom plate (4), wherein the connecting piece (3) is pre-buried and fixed at the bottom of the precast concrete composite floor slab (2);

connecting piece (3) are including connecting portion (32), second anticreep head (33), first fixed orifices (34) and first fixing bolt (35), second anticreep head (33) are fixed to be located connecting portion (32) bottom, first fixed orifices (34) are passed second anticreep head (33) are located in connecting portion (32), bottom plate (4) laminating precast concrete coincide floor slab (2) bottom surface, through first fixing bolt (35) are fixed in on connecting portion (32), bottom plate (4) with precast concrete coincide floor slab (2) bottom surface laminating.

2. The assembly type composite floor slab cast-in-place strip support-free construction device as claimed in claim 1, wherein the connecting piece (3) comprises a first anti-dropping head (31), the first anti-dropping head (31) is fixedly arranged at the end of the connecting piece (3), the second anti-dropping head (33) is oppositely arranged, the first anti-dropping head (31), the connecting part (32) and the second anti-dropping head (33) are fixedly embedded at the bottom of the composite prefabricated concrete floor slab (2), the bottom surface of the second anti-dropping head (33) is flush with the bottom surface of the composite prefabricated concrete floor slab (2), and the first fixing hole (34) is exposed.

3. The cast-in-place area of assembled coincide floor construction equipment of exempting from to support of claim 1, characterized in that, bottom plate (4) includes overlap joint piece (41), second fixed orifices (42) and second fixing bolt (43), overlap joint piece (41) are the echelonment, with bottom plate (4) integrated into one piece locates bottom plate (4) side, set up on overlap joint piece (41) second fixed orifices (42), two adjacent overlap joint piece (41) of bottom plate (4) the gomphosis is fixed, and second fixed orifices (42) align with one heart, second fixing bolt (43) spiro union is fixed in second fixed orifices (42), makes two overlap joint piece (41) fixed.

4. The cast-in-place strip support-free construction device for the fabricated composite floor slab as claimed in claim 1, wherein the bottom plate (4) comprises a plurality of through holes, and the positions and the number of the through holes are the same as those of the connecting pieces (3).

5. The assembly type composite floor cast-in-place strip support-free construction device as claimed in claim 1, wherein the connecting member (3) comprises sponge, the sponge is filled in the first fixing hole (34), the sponge is taken out after the precast concrete composite floor (2) is poured and solidified, and the first fixing bolt (35) is in threaded connection with the first fixing hole (34).