CN220486867U - Novel earthquake-resistant structure floor slab - Google Patents

Abstract

The utility model discloses a novel floor slab with an anti-seismic structure, and belongs to the technical field of building construction; the hollow brick comprises a plurality of rows of hollow bricks which are distributed at intervals, lower layer steel bars positioned at the middle positions of the hollow bricks at intervals, top layer steel bars positioned above the hollow bricks, and distribution bars which are vertically distributed with the top layer steel bars; and concrete is filled in the intervals of the rows of hollow bricks, and concrete is poured above the hollow bricks. According to the utility model, the hollow bricks are used for replacing part of concrete, so that the damage strength of the floor slab in the earthquake is reduced in a manner of reducing the dead weight of the floor slab; the use quantity of the reinforced steel bars and the concrete is reduced, the engineering cost is reduced, and the resources are saved; if strong shock is encountered, the building is destroyed and the damage is much smaller.

Description

Novel earthquake-resistant structure floor slab

Technical Field

The utility model relates to the technical field of building construction, in particular to a novel earthquake-resistant structural floor slab.

Background

In recent years, earthquakes frequently occur around the world, and huge life and property losses are caused for people in the earthquake areas; there is also increasing concern about the earthquake resistance of buildings. Thus, building seismic design has become an important consideration for building design. With the rapid development of the building field in China, the earthquake-resistant design technology of municipal high-rise buildings and large-scale buildings is very mature.

Multi-story masonry houses are one of our major structural types. However, the structural material has high brittleness, low tensile and shear resistance and poor earthquake resistance. The earthquake damage shows that under the action of strong earthquake, the damage part of the multi-layer masonry house layer is mainly a wall body, and the building cover is slightly damaged. Therefore, many earthquake-resistant designs are available for multi-story buildings.

Such as:

1) The reinforced concrete constructional column is arranged, so that the damage to the wall body is reduced, the anti-seismic performance is improved, and the ductility is improved;

2) The reinforced concrete ring beam is connected with the constructional column, so that the integrity of the house is enhanced, the earthquake resistance of the house is improved, and the earthquake resistance is improved;

3) The connection of the wall body is reinforced, and the floor slab and the beam are required to be of sufficient length and reliable connection;

4) Enhancing the integrity of the stairwell, etc.

For structural floor designs, there are two main types of floors currently in use:

1) Firstly, a prefabricated floor slab is produced by an extrusion molding machine, cement and internal reinforcing steel bars are cut off together by a cutting machine, and only the reinforcing steel bars are in the same direction but no transverse reinforcing steel bars are arranged;

2) The other is a cast-in-situ floor, which is formed by casting a model and raw materials on site in a construction site.

The prefabricated floor slab is a traditional floor slab widely applied in the building field, the manufacturing cost of the prefabricated floor slab is low, the construction and the installation are convenient, and the high construction efficiency can be ensured. However, during construction, the prefabricated floors are only connected with the bearing walls, and the adjacent prefabricated floors are not connected, so that the overall strength of the building is not high. Precast floor slabs are more prone to casualties during earthquakes and other sudden accidents. The cast-in-situ floor slab is integrally cast into a floor slab according to actual conditions, and the strength of the floor slab is larger than that of the prefabricated floor slab; in the earthquake occurrence process, the floor is not easy to fall locally, so that the probability of casualties is smaller, but the construction material consumption is more and the cost is higher.

Therefore, aiming at some small and medium-sized buildings, we propose a novel anti-seismic floor slab with a light hollow brick concrete structure.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a novel earthquake-resistant structural floor slab.

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

a novel earthquake-resistant structural floor slab comprises a plurality of rows of hollow bricks which are distributed at intervals, lower layer steel bars positioned at the middle positions of the hollow bricks at intervals, top layer steel bars positioned above the hollow bricks, and distribution bars which are vertically distributed with the top layer steel bars;

and concrete is filled in the intervals of the rows of hollow bricks, and concrete is poured above the hollow bricks.

In some embodiments, the lower layer of reinforcing bars are arranged up and down to the top layer of reinforcing bars.

In some embodiments, the hollow brick is a sintered clay hollow brick.

In some embodiments, the ends of each empty core tile are closed; the hollow parts of two adjacent hollow bricks in the row are butted together and are closely arranged.

In some embodiments, the outer side of the hollow brick is provided with serrated grooves.

In some embodiments, the hollow tiles are sized to: length x width x height = 30cm x 15cm.

In some embodiments, two adjacent rows of hollow bricks are spaced 5-15 cm apart.

In some embodiments, two adjacent rows of hollow tiles are spaced 10cm apart.

In some embodiments, the lower layer steel bar and the top layer steel bar adopt phi 12mm screw thread steel bars;

the top layer steel bars are distributed at intervals of 400 mm.

In some embodiments, the distribution bars are arranged with a spacing of 250mm using phi 6mm rebar.

Compared with the prior art, the utility model provides a novel floor slab with an anti-seismic structure, which has the following beneficial effects.

1. According to the utility model, the hollow bricks are used for replacing part of concrete, so that the damage strength of the floor slab in the earthquake is reduced in a manner of reducing the dead weight of the floor slab; the use quantity of the reinforced steel bars and the concrete is reduced, the engineering cost is reduced, and the resources are saved; if strong shock is encountered, the building is destroyed and the damage is much smaller.

2. Compared with the traditional reinforced concrete floor slab, the utility model has the advantage that the sound insulation effect is enhanced; compared with the traditional reinforced concrete floor slab, the reinforced concrete floor slab has the advantages of low manufacturing cost and good shockproof effect.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows; and will be apparent to those skilled in the art in part based upon a review of the following; alternatively, the teachings may be directed to practice of the present utility model.

Drawings

Fig. 1 is a schematic structural view of a hollow brick.

Fig. 2 is a cross-sectional view of the present utility model.

Fig. 3 is a diagram showing the effect of the present utility model.

Fig. 4 is a second effect diagram of the present utility model.

Fig. 5 is a third effect diagram of the present utility model.

In the figure:

1. a hollow brick; 2. lower layer steel bars; 3. top layer steel bars; 4. and distributing the ribs.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, a novel earthquake-resistant structural floor slab is in a structural form of hollow bricks and reinforced concrete; the hollow brick comprises a plurality of rows of hollow bricks 1 which are distributed at intervals, lower layer steel bars 2 which are positioned at the middle positions of the hollow bricks 1 at intervals, top layer steel bars 3 which are positioned above the hollow bricks 1, and distribution bars 4 which are vertically distributed with the top layer steel bars 3.

Meanwhile, concrete is filled in the intervals of the rows of hollow bricks 1, and concrete is poured above the hollow bricks 1 to form an upper protection layer.

It will be appreciated that the lower layer of reinforcing steel 2 should ensure the lower protective layer thickness; namely, the lower layer reinforcing bar 2 is lifted a certain distance so that the lower portion thereof is filled with concrete.

Likewise, a distance is required to be formed between the top layer reinforcing steel bar 3 and the hollow brick 1; specifically, the lower layer steel bar 2 and the top layer steel bar 3 can be lifted by adopting precast concrete cushion blocks with the same strength as concrete.

Preferably, the lower layer steel bars 2 and the top layer steel bars 3 are arranged up and down correspondingly.

In some embodiments, the hollow brick 1 is a sintered clay hollow brick.

It is understood that the internal cavity structure of the hollow brick is not particularly required; as shown in fig. 1, the structure of the cavity is provided, and the cavity can be closed or not.

It should be noted that the hollow parts of two adjacent hollow bricks 1 in the row are butted together and are closely arranged without leaving a gap so as to avoid the entry of concrete.

Likewise, the ends of each row of hollow bricks 1 are closed to avoid the ingress of concrete.

In some embodiments, the outer side of the hollow brick 1 is provided with serrated grooves to increase the friction between the concrete and the hollow brick 1, and the bond is tighter.

It will be appreciated that, as shown in fig. 1, there are saw tooth shaped grooves on four sides of the hollow brick 1; for the underside, it is also optionally provided as a plane.

In some embodiments, the dimensions of the hollow brick 1 are: length x width x height = 30cm x 15cm.

The distance between two adjacent rows of hollow bricks 1 is 5-15 cm.

Preferably, two adjacent rows of hollow bricks 1 are spaced 10cm apart.

The lower layer steel bar 2 and the top layer steel bar 3 are threaded steel bars with phi 12 mm; the top layer steel bars 3 are distributed at intervals of 400 mm.

The distributing ribs 4 are arranged with a spacing of 250mm by adopting phi 6mm twisted steel.

The technology utilizes the sintered clay hollow bricks to replace part of concrete structures, and reduces the damage strength in earthquake by reducing the self weight of the floor slab structure.

After the paving of the bottom template of the floor slab is completed, firstly paving a layer of sintered clay hollow bricks; in the laying process, hollow parts of the hollow bricks need to be butted together and are closely arranged, so that concrete is prevented from entering the hollow bricks in the concrete pouring process; at the end of the hollow brick, the end needs to be sealed. And a 10cm interval is reserved between the two rows of hollow bricks so as to place reinforcing steel bars and fill concrete.

And after the hollow bricks are paved, installing reinforcing steel bars. A phi 12 twisted steel bar is arranged between the two rows of hollow bricks; after the installation of the lower layer of steel bars is completed, installing the top layer of steel bars; the main bar of the top layer bar is a thread bar with phi 12mm, and the distributed bars are thread bars with phi 6 mm.

The concrete construction steps of the novel earthquake-resistant structural floor slab are as follows.

1) And erecting a scaffold.

Before the scaffold is erected, the compaction stability of the foundation must be ensured. The scaffold is erected according to the load distribution of the plates and beams. Because the hollow brick is combined with the concrete structural plate, the quality of the plate surface is smaller, and the space between the vertical rods of the scaffold under the plate is relatively larger. However, the scaffold at the bottom of the beam must be reinforced, and the bottom of the beam is reinforced by performing load checking according to the size of the beam.

2) And (3) installing the steel bars and the templates of the beams.

Because the size of the structural beam is much larger than the thickness of the plate, the steel bar of the beam is firstly installed when the steel bar is installed, and then the side die of the beam is installed; and then installing the bottom die on the plate surface. The mode is adopted for installing the steel bar template, so that the steel bar installation difficulty of the beam is reduced. In the process of installing the template of the plate, the height and flatness of the template are required to be measured and controlled in a matched mode.

3) And (5) laying hollow bricks.

After the bottom die of the plate is checked by measurement, the laying work of the hollow bricks can be carried out. The laying of the hollow bricks is smooth, tight, flat and firm, and the row spacing is ensured to be consistent; so as to ensure that gaps between two rows of bricks are uniform and consistent, the size of concrete poured subsequently is uniform, and the stress is balanced. The hollow parts must be consistent and tightly extruded, so that gaps are prevented from being generated due to disturbance of external force in the construction process, the hollow holes are blocked by the end parts of each row of bricks, and the blocking materials are firm, so that the concrete pouring process is ensured not to be damaged. The top of the brick is ensured to be smooth, so that the thickness of the protective layer can be ensured to be consistent when the steel bar is installed. The brick is strictly checked in the laying process, so that the completeness of the hollow brick is ensured, and concrete is prevented from being poured into the hollow brick under the condition of local damage.

4) And (5) installing the steel bars.

Because the plate adopting the hollow brick structure has smaller self-weight, the steel bar maintaining the structural strength has smaller usage amount, and the steel bar installation is simpler. A longitudinal bar with the diameter of 12mm is arranged in a gap of 10cm between each row of hollow bricks (transverse bars are not required to be arranged), and the thickness of a protective layer at the lower part of the bar is ensured in construction. And then installing surface layer ribs with the diameter of 12mm@400mm and distributed ribs with the diameter of phi 6mm@250mm on the top of the hollow brick corresponding to the bottom layer reinforcing steel bars. The spacing and binding quality of the reinforcing steel bars should be ensured in the installation process, and the reinforcing steel bars must be firmly bound. The steel bars at the top of the brick are ensured to have a protective layer thickness by using precast concrete cushion blocks with equal strength. Protection of the hollow brick is strictly performed during construction.

5) And (5) installing a side die.

After the hollow bricks are paved, the side templates of the plates are installed, and special attention is paid to the alignment and the firmness of reinforcement in the template installation engineering.

6) And (5) mounting the embedded part.

After the hollow bricks and the reinforcing steel bars are installed, the embedded parts such as the threading pipes, the wire boxes and the reserved holes are installed, the hollow bricks are prevented from being damaged in the installation process, and the embedded parts are ensured to be firmly installed. Part of embedded parts such as the wire box and the hanging part base are required to be placed in advance before the steel bars are installed, so that the installation difficulty of the embedded parts is not increased after the steel bars are installed.

7) And pouring concrete.

Before concrete placement, the top surface elevation is subjected to multi-point positioning, so that uneven plate surface load caused by overlarge elevation error due to local point damage in the placement process is prevented. In the pouring process of concrete, the protection of the hollow bricks is paid attention to, and damage to the hollow bricks and the embedded cable pipes by other tools such as vibrating bars, concrete pump pipes and the like is prevented. The stacking of weights on the hollow brick panels is reduced as much as possible. The casting process is to take and put the tool lightly, so as to avoid the damage of the hollow brick and prevent the concrete from being poured into the hollow brick or the embedded pipe.

8) And (5) maintaining.

Because the thicknesses of concrete layers at the tops of the hollow bricks are different from 7cm to 10cm according to different longitudinal and transverse beam intervals of different buildings, the hollow bricks are not very thick; the area is large, and the water evaporation is quick; the concrete after pouring is required to be subjected to covering maintenance, so that the wetting of the plate surface is ensured, the cracking of the concrete is prevented, and the quality of the concrete is ensured.

The utility model belongs to the house construction industry, which is suitable for the structural floor slab of low-rise public or private buildings in areas with frequent earthquakes on the ground and on the earthquake belt; the novel structural floor slab is provided for the existing low-rise civil building, is more convenient to construct and is lower in cost; compared with the traditional floor slab with the anti-seismic structure, the floor slab has obvious cost saving effect.

In the utility model, the following components are added:

1. the hollow bricks are used for replacing part of concrete, so that the damage strength of the floor slab in the earthquake is reduced in a manner of reducing the dead weight of the floor slab;

2. the use quantity of the reinforced steel bars and the concrete is reduced, so that the engineering cost is reduced, and the resources are saved;

3. compared with the traditional reinforced concrete floor slab, the sound insulation effect is enhanced by using the hollow bricks;

4. if strong shock is encountered, the building is destroyed, and the self weight of the floor slab is smaller than that of the traditional reinforced concrete floor slab, so that the building is much less destructive;

5. compared with the traditional reinforced concrete floor slab, the structure has the advantages of low manufacturing cost and good shockproof effect.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The novel earthquake-resistant structural floor slab is characterized by comprising a plurality of rows of hollow bricks (1) which are distributed at intervals, lower-layer steel bars (2) which are positioned at the middle positions of the hollow bricks (1) at intervals, top-layer steel bars (3) which are positioned above the hollow bricks (1), and distribution bars (4) which are vertically distributed with the top-layer steel bars (3);

and concrete is filled in the intervals of the rows of hollow bricks (1), and the concrete is poured above the hollow bricks (1).

2. The novel earthquake-resistant structure floor slab according to claim 1, wherein the lower layer steel bars (2) and the top layer steel bars (3) are arranged correspondingly up and down.

3. The novel earthquake-resistant structural floor slab according to claim 1, wherein the hollow bricks (1) are sintered clay hollow bricks.

4. The novel earthquake-resistant structural floor slab according to claim 1, characterized in that the ends of each row of hollow bricks (1) are closed; the hollow parts of two adjacent hollow bricks (1) in the row are butted together and are closely arranged.

5. The novel earthquake-resistant structural floor slab according to claim 1, wherein the outer side surface of the hollow brick (1) is provided with serrated grooves.

6. The new earthquake-resistant structural floor according to claim 1, characterized in that the hollow brick (1) has dimensions of: length x width x height = 30cm x 15cm.

7. The novel earthquake-resistant structural floor slab according to claim 1, wherein the space between two adjacent rows of hollow bricks (1) is 5-15 cm.

8. A new earthquake-resistant structure floor according to claim 7, characterized in that two adjacent rows of hollow bricks (1) are spaced apart by 10cm.

9. The novel earthquake-resistant structural floor slab according to claim 1, wherein the lower layer steel bars (2) and the top layer steel bars (3) adopt phi 12mm threaded steel bars;

the top layer steel bars (3) are distributed at intervals of 400 mm.

10. The novel earthquake-resistant structural floor slab as claimed in claim 9, wherein the distributing ribs (4) are arranged at intervals of 250mm by adopting phi 6mm screw-thread reinforcing bars.