CN215368128U - Large-span roof panel combined hollow box floor slab construction structure - Google Patents

Abstract

A large-span roof panel combined hollow box floor slab construction structure relates to the field of building construction and comprises a floor slab to be poured, hollow boxes arranged in the floor slab in a matrix manner and rib beams arranged between the hollow boxes; the floor slab, the hollow box and the rib beam are cast into a whole through concrete. The hollow box is of a six-sided hollow three-dimensional structure and comprises a bottom plate, a top plate and side plates, rib plates are distributed in the hollow box in a shape like a Chinese character 'jing', and exhaust ducts are vertically and oppositely penetrated between the centers of the bottom plate and the top plate. The upper-layer distribution ribs of the floor slab are arranged below the upper reinforcing steel bars of the rib beams, and the upper-layer distribution ribs and the top plate of the hollow box are supported by upper cushion blocks; the bottom plate of the hollow box and the bottom die of the floor slab are supported by the lower cushion block, and the lower part of the bottom die of the floor slab is supported by the formwork supporting keel. The utility model solves the problems that the existing pentahedral hollow box can not solve the problem of low flatness of a suspended ceiling of a bottom plate and can not meet the requirements of economic floor slabs when the span and the floor height of a room are low.

Description

Large-span roof panel combined hollow box floor slab construction structure

Technical Field

The utility model relates to the field of building construction, in particular to a large-span roof panel combined hollow box floor slab construction structure.

Background

The large-span cast-in-situ hollow floor has the advantages of large span, light dead weight, capability of reducing floor height, wide and attractive space, material consumption saving, cost saving, simple and quick construction and the like, so that the large-span cast-in-situ hollow floor is more and more widely adopted. The general pentahedron hollow box that uses in the current construction, the pentahedron hollow box is the deformation of # -shaped floor, has only solved the inconvenient problem of template installation, can't solve the problem that the furred ceiling roughness is low not hung to the bottom plate, and can't satisfy the span of room, the requirement of economic floor when the floor height is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a large-span roof panel combined hollow box floor slab construction structure, which solves the problems that the existing pentahedral hollow box cannot solve the problem of low flatness of a non-suspended ceiling of a bottom plate and cannot meet the economic floor slab requirement when the span and the floor height of a room are low.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a large-span roof panel combined hollow box floor slab construction structure comprises a floor slab to be poured, hollow boxes arranged in the floor slab in a matrix manner and rib beams arranged between the hollow boxes; the floor slab, the hollow box and the rib beam are cast into a whole through concrete.

The floor slab comprises upper-layer distribution ribs arranged in a transverse and longitudinal staggered manner, lower-layer distribution ribs arranged in a transverse and longitudinal staggered manner and floor slab concrete poured in a template of the floor slab.

The hollow box is of a six-sided hollow three-dimensional structure and comprises a bottom plate, a top plate and side plates, rib plates are distributed in the hollow box in a shape like a Chinese character 'jing', and exhaust ducts are vertically and oppositely penetrated between the centers of the bottom plate and the top plate.

The rib beam comprises an upper reinforcing steel bar, a lower reinforcing steel bar and a stirrup.

The upper-layer distribution ribs of the floor slab are arranged below the upper reinforcing steel bars of the rib beams, and the upper-layer distribution ribs and the top plate of the hollow box are supported by upper cushion blocks; the bottom plate of the hollow box and the bottom die of the floor slab are supported by the lower cushion block, and the lower part of the bottom die of the floor slab is supported by the formwork supporting keel; and the formwork supporting keels, the bottom die of the floor slab and the lower reinforcing steel bars of the rib beams are bound and fixed through iron wires.

Further preferred technical solution: the hollow box is six-sided rectangular hollow three-dimensional structure or six-sided special-shaped hollow three-dimensional structure.

Further preferred technical solution: the hollow box is a thin-wall light box body.

Further preferred technical solution: the hollow box is made of high-strength composite materials.

Further preferred technical solution: the number of the well lattices formed by the rib plates in the hollow box is at least four.

Further preferred technical solution: the bottom plate, the top plate, the side plates and the wood square back edges among the rib plates of the hollow box are nailed.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

the utility model has the advantages that 1, the hollow box is a hexahedron which is different from the traditional five-face box body, the hollow box with the hexahedron structure is provided with the integrated bottom plate, the problem of low flatness of the un-suspended ceiling of the bottom plate is solved, the size of the hollow box with the hexahedron structure can be adjusted according to the span and the floor height of a room, and the economic floor requirements when the span and the floor height of the room are low can be met.

2, the utility model realizes visualization of the concrete pouring degree of the floor slab and the vibration and the exhaust of the floor slab concrete by arranging the exhaust duct in the hollow box.

3, the hollow box is made and molded by high-strength composite materials, the hollow box plates are processed in a factory, the hollow box plates are assembled by a pneumatic nail gun and a batten back edge, and the construction is simple and convenient; the method has the characteristics of stable component quality caused by factory processing of prefabricated components, and has the characteristics of reducing the template engineering quantity, simplifying the template process, reducing the weight and the steel consumption of reinforced concrete components, improving the performance of reinforced concrete structures, reducing the construction cost and the like.

4, the hollow box is arranged in the reinforced concrete floor slab, then concrete is poured, a closed inner cavity is formed in the floor slab after the concrete has certain strength, and the hollow box only plays a role of forming a hollow mould in the reinforced concrete.

Drawings

Fig. 1 is a first schematic view of a large-span roof panel combined hollow box floor slab construction structure of the utility model.

Fig. 2 is a schematic diagram of a floor slab construction structure of a large-span roof panel combined hollow box.

FIG. 3 is a schematic illustration of the hollow box of the present invention-without the top plate.

FIG. 4 is a second schematic view of the hollow box of the present invention.

Fig. 5 is a third schematic view of the construction structure of the large-span roof panel combined hollow box floor slab.

Fig. 6 is a schematic view of a formwork support structure of a large-span roof panel combined hollow box floor slab construction structure of the utility model.

FIG. 7 is a schematic view of the binding and forming of the peripheral ribs of the hollow box.

FIG. 8 is a schematic diagram showing the completion of the binding of the distribution ribs of the floor slabs around the hollow box according to the present invention.

Fig. 9 is a schematic view of a square reserved hole in a floor slab according to the utility model.

Fig. 10 is a schematic view of a circular reserved hole in a floor slab according to the utility model.

FIG. 11 is a schematic view of a solid area around a square reserved hole of the floor slab.

FIG. 12 is a schematic view of a solid area around a circular reserved hole of a floor slab.

Fig. 13 is a construction process flow chart of the large-span roof panel combined hollow box floor slab construction structure of the utility model.

Reference numerals: 1-floor, 2-hollow case, 3-rib roof beam, 4-upper cushion block, 5-lower cushion block, 6-formwork keel, 7-iron wire, 1.1-upper distribution muscle, 1.2-lower distribution muscle, 1.3-floor concrete, 2.1-floor, 2.2-exhaust duct, 2.3-bottom plate, 2.4-roof, 2.5-curb plate, 3.1-upper reinforcing bar, 3.2-lower reinforcing bar, 3.3-stirrup.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 13, a large-span roof panel combined hollow box floor slab construction structure is an integral structure with a continuous box section, and comprises a floor slab 1 to be poured, hollow boxes 2 arranged in the floor slab 1 in a matrix manner, and rib beams 3 arranged between the hollow boxes 2; the floor slab 1, the hollow box 2 and the rib beam 3 are cast into a whole through concrete.

The floor slab 1 comprises upper-layer distribution ribs 1.1 which are transversely and longitudinally arranged in a staggered manner, lower-layer distribution ribs 1.2 which are transversely and longitudinally arranged in a staggered manner and floor slab concrete 1.3 poured in a template of the floor slab 1.

The hollow box 2 is a hexahedral hollow three-dimensional structure and comprises a bottom plate 2.3, a top plate 2.4 and side plates 2.5, rib plates 2.1 are distributed in the hollow box 2 in a shape like a Chinese character 'jing', and exhaust ducts 2.2 are vertically and oppositely arranged between the centers of the bottom plate and the top plate.

The rib 3 comprises an upper reinforcement 3.1, a lower reinforcement 3.2 and a stirrup 3.3.

The upper-layer distribution ribs 1.1 of the floor slab 1 are arranged below the upper reinforcing steel bars 3.1 of the rib beams 3, and the upper-layer distribution ribs 1.1 and the top plate of the hollow box 2 are supported by upper cushion blocks 4; the bottom plate of the hollow box 2 and the bottom die of the floor slab 1 are supported by a lower cushion block 5, and the lower part of the bottom die of the floor slab 1 is supported by a formwork supporting keel 6; and the formwork supporting keels 6, the bottom die of the floor slab 1 and the lower steel bars 3.2 of the rib beams 3 are bound and fixed through iron wires 7.

The hollow box 2 is of a six-sided rectangular hollow three-dimensional structure or a six-sided special-shaped hollow three-dimensional structure; when the hollow box is positioned at the corner position and the hollow box with the rectangular hollow three-dimensional structure cannot meet the construction requirement, the hollow box can be assembled into a special-shaped hollow three-dimensional structure according to the actual construction requirement; specifically, the hollow box can be cut and assembled according to the actual conditions on site by the holes at the position of the floor slab out of the roof and the irregular shapes of the reserved embedded positions.

Hollow case 2 through set up exhaust duct 2.2 in the hollow case, realizes having the visualization to floor concrete placement degree and floor concrete's vibration and exhaust.

The hollow box 2 is a Boao thin-wall light box body and is made and molded by high-strength composite materials, the number of the well lattices formed by the rib plates 2.1 in the hollow box 2 is at least four, and the specific number is distributed according to construction requirements; the hollow box plates are processed in a factory, the whole box body is assembled on the site, and a special-shaped box body or a box body with special height and size requirements can be assembled according to actual conditions; the hollow box plates are connected and assembled by the pneumatic nail gun and the batten back edges, and the construction is simple and convenient.

The hollow box 2 is a six-face hollow three-dimensional structure, the flatness requirement of a template and a bottom plate without a ceiling is met, and the requirements on an economic floor slab with a small span and a low floor height of a room are met.

The hollow box 2 has the characteristic of stable component quality caused by factory processing of prefabricated components, and has the characteristics of reducing the template engineering quantity, simplifying the template process, reducing the weight of reinforced concrete components and the steel consumption, improving the performance of a reinforced concrete structure, reducing the construction cost and the like.

The hollow box 2 is installed in a reinforced concrete floor slab, concrete is poured, a closed inner cavity is formed in the floor slab after the concrete has certain strength, the hollow box 2 loses the function, and the hollow box 2 only plays a role in forming a hollow mold in reinforced concrete.

The hollow box 2 is hexahedral, is different from the traditional five-face box body, and is provided with an integrated bottom plate, so that the problem of low flatness of an unlined ceiling of the bottom plate can be solved, the size of the hollow box with the hexahedral structure can be adjusted according to the span and the floor height of a room, and the economic floor requirements when the span and the floor height of the room are low can be met.

The construction process of the utility model comprises the following steps:

step one, manufacturing a hollow box 2: the hollow box plates are processed in a factory, the whole box body is assembled on the site, and a special-shaped or special-requirement box body can be assembled according to actual conditions; the hollow box plate is assembled by a pneumatic nail gun and a batten back edge.

1.1, the stacking field of the hollow box is firm, flat and clean; the base layer of the storage yard without surface treatment should be solid, and clean sand with the thickness of not less than 50mm should be paved on the surface.

1.2, the hollow boxes are classified, stacked and stacked according to specification and model, channels with the width of not less than 800mm are reserved at two ends of the stack respectively, the number of stacked layers is not more than 4, the number of stacked layers is not more than 2 when the box body is large, storage marks are made after stacking, and people are prohibited from climbing.

1.3, a special suspension cage (box) is adopted to hoist the hollow box, and the direct binding of the cable rope is strictly forbidden to hoist.

And step two, erecting and arching the template of the floor slab 1.

2.1, constructing the hollow beam-free floor slab by adopting a clear water template.

2.2, arching: the template is that a bidirectional floor slab is arched in two directions, a unidirectional floor slab is arched in one direction, and the arching height can be designed according to the design requirement; the engineering hollow slab is pre-arched according to six per thousand.

2.3, supporting the template: strictly calculating the support distance according to the self weight of the floor slab and the construction load and considering the lateral displacement; construction is carried out after the auditing of a construction unit, a construction unit and a supervision unit is needed; and preventing the floor collapse accident.

Step three, marking, positioning and pre-embedding the hydroelectric pipe: pre-buried water and electricity spool in close rib roof beam requires that the water and electricity pipe to walk to the intercostal, and local line box or pipeline just can adopt low hollow case to let the pipeline open in design box bottom superelevation.

Step four, binding steel bars and binding and fixing a support frame:

4.1, binding frame beams and ribbed steel bars: the width of the stirrup needs to be made by reducing the rib width by 10mm, so that the box body can be conveniently put in; for example: the distance between the grids of the actual area for placing the 800X 800 box body is 810 mm.

4.2, the corner additional structural steel bar net piece is arranged in parallel with the bottom net or the surface net steel bar to avoid superelevation.

4.3, if the hogging moment reinforcing bars are not hooked, the length of the hogging moment reinforcing bars is properly increased to the space between ribs, so that the anchoring requirement is met.

Step five, installing, pre-inspecting and binding upper distribution ribs 1.1 of the hollow box 2:

5.1, carefully reading before the hollow box is installed, and specifically reviewing the construction scheme and the floor layout of the inner mold of the light box body to organize the construction according to requirements.

5.2, the hollow box is required to be lightly taken and lightly placed with the right side facing upwards when being installed, and the hollow box is required to walk on the rib beam without directly stacking heavy objects and other operations on the hollow box.

5.3, effective technical measures are adopted to ensure that the installation position of the hollow box is accurate and the whole hollow box is straight, and the installation position of the hollow box meets the design requirement; the dimensions of the perimeter of the panels and the solid concrete around the columns are designed to meet design requirements.

5.4, installing the hollow boxes, checking the appearances of the hollow boxes one by one, and repairing; the box body is cushioned by more than two steel bar split heads according to the designed height under each hollow box, and the distance from the bottom surface of the hollow box to the bottom surface of the floor slab is ensured; a mortar cushion block is adopted on the hollow box as a reinforcing steel bar bottom bar protective layer, and two 850mm long reinforcing steel bars (equal to or larger than 14) are adopted under the box body to ensure the height of the box body and the thickness of the bottom plate.

And 5.5, paving flange steel bars to cushion the distributed steel bars on the hollow box by using cushion blocks.

Step six, reinforcing and detecting the anti-floating measures of the hollow box 2: the hollow box adopted by the utility model is 800 × 600 (H) mm, the hollow box is a hexahedron which is different from the prior five-sided box, the importance of anti-floating measures in construction is particularly outstanding, and the following measures are adopted for preventing the box from floating:

6.1, fixing the steel bars on the bottom net and the supporting framework keels firmly (not only fixing the steel bars and the templates) by using 12# to 16# iron wires at the distance of plum point of about 1.2 to 1.5 meters of the bottom net, and well cushioning the fixed points by using split heads; the keel and the frame body are made into a firm pulling joint.

6.2, pass the face net reinforcing bar from rib roof beam upper rib down, make even as an organic whole from top to bottom, do anti floating reinforcing bar: and reserving an exhaust duct in the middle of the box body, and observing the pouring degree of the concrete. An iron wire is embedded next way in the center, and the upper part of the iron wire adopts a cross steel bar drawknot box body or the cross junction of the top plate anti-floating steel bars; the lower end of the iron wire is tied on the upright post or the horizontal rod of the frame body (the upright post and the horizontal rod of the iron wire can be used as a double fastener to take anti-skidding measures and the like to ensure that the tying point is firm).

Seventhly, pouring and maintaining the floor concrete: before concrete pouring, a one-meter-wide pavement is erected on a preset pouring route for construction workers to use, and the situation that the workers trample the box body is avoided, so that the box body is not damaged, and construction is not affected.

7.1, pouring concrete after the concrete pouring reinforcing steel bars are concealed and accepted, and the fixed acceptance is qualified; during construction, the concrete at the beam part is poured firstly, and then the concrete at the plate part is poured.

7.2, for the concrete for casting the cast-in-place concrete hollow floor structure, the slump should be 20 cm; before concrete pouring, the box mould is watered and moistened, and a pumping method is adopted for concrete pouring; pouring is started from one side along the span direction of the floor slab, the bottom slab part is poured firstly in a layered pouring mode, the initial setting time is controlled, and concrete is poured on the upper part and is sequentially carried out; the distribution should be as uniform as possible, so that the case die is prevented from being damaged and drifting due to over-high accumulation of concrete at the same position; the vibrating rods are sequentially vibrated along the rib plate pouring direction, and the vibrating time and the number of vibrating points are properly increased; observing the periphery of the empty box mold while vibrating until no air bubbles emerge; no air bubble emerges, which indicates that the concrete at the bottom of the box mould is compact; the vibrating rod should avoid directly touching the hollow box mould. In the casting process, if the hollow box mold is damaged, the hollow box mold must be processed in time.

7.3, immediately curing the concrete after the concrete is collected; and in summer, the film is covered, watered and maintained for not less than 7 days.

And step eight, molding and acceptance inspection.

8.1, when the strength of the concrete reaches 100% of the design strength, the form can be disassembled (the strength of the disassembled test block is standard) and the appearance quality inspection is carried out.

8.2, the masonry wall body on the masonry floor of the wall body on the floor slab can be built only when the strength of the floor slab reaches 100 percent, otherwise, the built wall body is likely to crack after a period of time without waiting for the creep completion of the concrete.

And 8.3, reserving various holes according to design requirements in construction, avoiding secondary hole opening after construction as much as possible, and reinforcing the hole opening if the hole is opened.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a hollow case floor construction structures of large-span roof boarding combination which characterized in that: comprises a floor slab (1) to be poured, hollow boxes (2) arranged in the floor slab (1) in a matrix manner and rib beams (3) arranged between the hollow boxes (2); the floor (1), the hollow box (2) and the rib beam (3) are cast into a whole through concrete;

the floor (1) comprises upper-layer distribution ribs (1.1) which are transversely and longitudinally staggered, lower-layer distribution ribs (1.2) which are transversely and longitudinally staggered and floor concrete (1.3) poured in a template of the floor (1);

the hollow box (2) is of a six-sided hollow three-dimensional structure and comprises a bottom plate (2.3), a top plate (2.4) and side plates (2.5), rib plates (2.1) are distributed in the hollow box (2) in a Chinese character 'jing' shape, and exhaust ducts (2.2) are vertically and oppositely arranged between the centers of the bottom plate and the top plate;

the rib beam (3) comprises an upper reinforcing steel bar (3.1), a lower reinforcing steel bar (3.2) and a stirrup (3.3);

the upper-layer distribution ribs (1.1) of the floor (1) are arranged below the upper reinforcing steel bars (3.1) of the rib beams (3), and the upper-layer distribution ribs (1.1) and the top plate of the hollow box (2) are supported by upper cushion blocks (4); the bottom plate of the hollow box (2) and the bottom die of the floor slab (1) are supported by a lower cushion block (5), and the lower part of the bottom die of the floor slab (1) is supported by a formwork supporting keel (6); the formwork supporting keels (6), the bottom die of the floor slab (1) and the lower reinforcing steel bars (3.2) of the rib beams (3) are bound and fixed through iron wires (7).

2. The large-span roof panel combined hollow box floor slab construction structure of claim 1, characterized in that: the hollow box (2) is of a six-sided rectangular hollow three-dimensional structure or a six-sided special-shaped hollow three-dimensional structure.

3. The large-span roof panel combined hollow box floor slab construction structure of claim 1, characterized in that: the hollow box (2) is a thin-wall light box body.

4. The large-span roof panel combined hollow box floor slab construction structure of claim 1, characterized in that: the hollow box (2) is made of high-strength composite materials.

5. The large-span roof panel combined hollow box floor slab construction structure of claim 1, characterized in that: the number of the well lattices formed by the separation of the rib plates (2.1) in the hollow box (2) is at least four.

6. The large-span roof panel combined hollow box floor slab construction structure as claimed in any one of claims 1 to 5, wherein: the bottom plate (2.3), the top plate (2.4), the side plate (2.5) and the rib plate (2.1) of the hollow box (2) are nailed by the batten back edge.

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