CN209817217U - Bidirectional floor slab with superposed concrete reinforcing steel rings - Google Patents

Bidirectional floor slab with superposed concrete reinforcing steel rings Download PDF

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Publication number
CN209817217U
CN209817217U CN201920121505.1U CN201920121505U CN209817217U CN 209817217 U CN209817217 U CN 209817217U CN 201920121505 U CN201920121505 U CN 201920121505U CN 209817217 U CN209817217 U CN 209817217U
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China
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cast
concrete
transverse
place
floor
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Expired - Fee Related
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CN201920121505.1U
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Chinese (zh)
Inventor
张延年
汪青杰
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Shandong Huifu Construction Group Construction Industry Co.,Ltd.
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Shenyang Jianzhu University
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Abstract

The utility model relates to a two-way floor of coincide concrete reinforcing ring belongs to the building technology field. The composite concrete reinforced ring bidirectional floor slab is formed by splicing composite concrete reinforced ring bidirectional prefabricated floor slabs and casting concrete in situ. The longitudinal two ends of the precast concrete bottom layer are respectively lapped on the top of the lower strip-shaped concrete member; the transverse steel bars at the bottom of the opposite prefabricated floor are mutually lapped one by one; the precast concrete bottom layers are transversely closed one by one, and transverse connecting reinforcing steel bar rings are respectively arranged in each transverse connecting port. The utility model discloses an effect and advantage need not special operation and can realize the two-way atress of superimposed sheet, the integral equipment in scene, and production simple process is favorable to mechanized, automatic, intelligent production. Convenient transportation and low cost. Not only has good economic benefit, but also has excellent stress performance. And the site operation is convenient, the construction period is short, the economic effect is good, the complex operation in the construction process is avoided, and the manufacturing cost is greatly reduced.

Description

Bidirectional floor slab with superposed concrete reinforcing steel rings
Technical Field
The utility model belongs to the technical field of the building, especially, relate to a two-way floor of coincide concrete reinforcement ring.
Background
The composite floor slab is a better structural form combining prefabrication and cast-in-place concrete. The prefabricated prestressed thin plate (5-8 cm in thickness) and the upper cast-in-place concrete layer are combined into a whole and work together. The prestressed main reinforcement of the thin plate is the main reinforcement of the laminated floor slab, and the upper concrete cast-in-place layer is only provided with negative moment reinforcement and constructional reinforcement. The prestressed thin plate is used as a bottom die of a cast-in-place concrete layer, and a template does not need to be supported by the cast-in-place layer. The bottom surface of the thin plate is smooth and flat, and after plate seams are processed, the ceiling can not be plastered any more. The composite floor slab has the advantages of integrity, high rigidity, good crack resistance, no increase of reinforcing steel bar consumption, template saving and the like of a cast-in-place floor slab. Because the cast-in-place floor slab does not need to be provided with a formwork, and the large precast concrete partition boards can be simultaneously hoisted in the structural construction stage, the cast-in-place floor slab can be inserted into decoration engineering in advance, and the construction period of the whole engineering is shortened.
The floor slab has a span of less than 8 m, and can be widely used in various house construction projects such as hotels, office buildings, schools, houses, hospitals, warehouses, parking lots, multi-storey industrial plants and the like. The prestressed thin plates are different in structure according to the superposed surface and can be divided into three types: the laminated surface bears less shear stress, and the laminated surface is not provided with shear steel bars, but the upper surface of the concrete is required to be rough and scratched or some combination holes are reserved. Secondly, the shearing stress borne by the superposed surface is large, the surface of the thin plate needs to be additionally provided with shearing resistant steel bars besides rough roughening, and the diameter and the distance of the steel bars are determined by calculation. The shape of the reinforcing steel bar is wave shape, spiral shape and the shape of the triangular section formed by bending spot welding net sheets. And thirdly, the upper surface of the prefabricated thin plate is provided with a steel truss for enhancing the rigidity of the thin plate during construction and reducing the support erected below the thin plate.
The concrete composite floor slab is a part of a composite structure and is a structural form combining prefabrication and cast-in-place. In the construction process of the composite slab, a prefabricated bottom plate is firstly arranged at the bottom, the prefabricated bottom plate plays a role of a template when upper-layer concrete is poured, and then the two parts of concrete form a whole to bear load. The composite floor slab integrates the advantages of cast-in-place and prefabrication, and is a floor slab form with great development prospect.
1) From the aspect of stress, compared with a fully prefabricated assembled floor slab, the integral rigidity and the anti-seismic performance of the structure can be improved, and when the same prestressed tendons are configured, compared with the tensioned edge of the load action of the full section, the effective prestress built on the prefabricated section is larger, so that the anti-cracking performance of the structure is improved. On the premise of the same crack resistance, the using amount of the prestressed tendons can be saved.
2) From the manufacturing process, the main stressed part of the composite floor slab is manufactured in a factory, the mechanization degree is high, the quality is easy to guarantee, the production speed is high by adopting flow production, the composite floor slab can be manufactured in advance, the construction period is not occupied, and the template of the prefabricated part can be reused. The post-cast concrete takes the prefabricated bottom plate as a template, so that the workload of formwork support can be reduced compared with the full cast-in-place floor slab, the wet operation of a construction site is reduced, the condition of the construction site is improved, the construction efficiency is improved, the effect is more obvious especially under the condition of high-altitude operation or difficult formwork support, the factory prefabrication is easy to realize the manufacture of a more complex section form, and the post-cast concrete has obvious advantages of developing the bearing potential of a component and reducing the self weight of the structure. Meanwhile, the large-span laminated slab also conforms to the development direction of the building roof of the modern residence.
3) Long-term scientific experiments and engineering practice results show that the composite floor slab adopted in concrete structural engineering can obtain obvious benefits, and the using amount of the steel bars is greatly reduced when high-strength steel bars are adopted. When the hollow prefabricated section is adopted, the consumption of concrete can be saved, the construction period is correspondingly shortened, and the defects of the construction method are that the links of prefabricating, processing, transporting and hoisting are increased.
4) The section of the concrete composite floor slab consists of a prefabricated part and a cast-in-place part, and the common working performance of the prefabricated part and the cast-in-place part depends on the shearing resistance of a new superposed surface and an old superposed surface, so that the shearing resistance design of the superposed surfaces is an important part, the concrete composite floor slab has higher requirements on the construction technology content, and particularly, stricter requirements are provided for a use unit in the aspect of construction quality management.
5) The two-way plate of the concrete laminated slab has the problems that some problems are not effectively solved, and mechanical, automatic and intelligent production is difficult to realize when reinforcing steel bars of various forms are processed. Therefore, it is necessary to solve these technical problems to fully embody the advantages of the precast concrete assembled building. The bidirectional plate has high processing difficulty, high cost, difficult realization and low economy.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a need not the two-way atress of special operation can realize the superimposed sheet, the integral equipment in scene, production simple process's the two-way floor of superimposed concrete reinforcing ring has avoided the complicated operation in the work progress effectively, reduces the cost by a wide margin.
The utility model adopts the technical scheme as follows:
a laminated concrete reinforced ring bidirectional floor slab comprises a precast concrete bottom layer, a cast-in-situ laminated layer, a transverse connector, precast slab bottom longitudinal steel bars, precast slab bottom transverse steel bars, a steel bar truss, pre-buried hoisting steel bars, cast-in-situ slab top longitudinal steel bars, cast-in-situ slab top transverse steel bars, transverse connecting steel bar rings and lower strip-shaped concrete members,
the composite concrete reinforced ring bidirectional floor slab is formed by splicing composite concrete reinforced ring bidirectional prefabricated floor slabs and casting concrete in situ;
the longitudinal ends of the precast concrete bottom layer are respectively lapped at the top of the lower strip-shaped concrete member, the lapping length is 5 ~ 20mm, the longitudinal butted precast floor slab bottom transverse steel bars are positioned at the upper part of the lower strip-shaped concrete member, and the opposite precast floor slab bottom transverse steel bars are lapped one by one;
the precast concrete bottom layers are transversely and one by one closed and close, the transverse connecting ports of the adjacent precast concrete bottom layers are aligned one by one, and transverse connecting reinforcing steel bar rings are respectively arranged in each transverse connecting port; the transverse connecting reinforcing steel bar ring is horizontal, and two ends of the transverse connecting reinforcing steel bar ring respectively span over the bottom longitudinal reinforcing steel bars of the two adjacent prefabricated floor plates;
erecting longitudinal reinforcements at the top of the cast-in-place laminated plate before casting the cast-in-place laminated layer, uniformly distributing the longitudinal reinforcements at the top of the cast-in-place laminated plate, and mutually lapping the longitudinally butted longitudinal reinforcements at the top of the cast-in-place laminated plate;
erecting horizontal reinforcements at the top of the cast-in-place layer plate, and uniformly distributing the horizontal reinforcements at the top of the cast-in-place layer plate, wherein the horizontal reinforcements at the top of the cast-in-place layer plate are transversely adjacent to each other, and the horizontal reinforcements at the top of the cast-in-place layer plate of the bidirectional precast floor slab with the superposed concrete reinforcement;
and pouring a cast-in-place laminated layer after the assembly is finished.
Furthermore, the whole prefabricated concrete bottom layer of the bidirectional prefabricated floor slab with the superposed concrete reinforcement rings is rectangular, the lowest layer in the prefabricated concrete bottom layer is prefabricated floor bottom transverse reinforcements which are uniformly distributed, the length of the prefabricated floor bottom transverse reinforcements is the width of the slab, and the prefabricated floor bottom transverse reinforcements extend to two ends of the slab;
uniformly distributed prefabricated floor bottom longitudinal steel bars are arranged above the prefabricated floor bottom transverse steel bars, and two ends of each prefabricated floor bottom longitudinal steel bar extend out of two ends of a long edge of a prefabricated concrete bottom layer;
the side surfaces of two long edges of the precast concrete bottom layer are uniformly provided with a plurality of transverse connectors, the transverse connectors are respectively arranged from the edges to the outer sides of the outermost steel bar trusses, and the outer sides of the outermost steel bar trusses are provided with 2 ~ 4 precast slab bottom longitudinal steel bars;
the upper part of the precast concrete bottom layer is a cast-in-place superposed layer, the top layer in the cast-in-place superposed layer is uniformly distributed cast-in-place slab top transverse steel bars, and the lower part of the cast-in-place slab top transverse steel bars is vertically crossed with the cast-in-place slab top longitudinal steel bars which are uniformly distributed;
arranging a steel bar truss in the precast concrete bottom layer, wherein the bottom of the steel bar truss is provided with two precast floor bottom longitudinal steel bars, the top of the steel bar truss is provided with a cast-in-situ floor top longitudinal steel bar, and the horizontal projection of the cast-in-situ floor top longitudinal steel bar is positioned between the two precast floor bottom longitudinal steel bars; connecting the top longitudinal steel bars of the cast-in-place laminated plate with the bottom longitudinal steel bars of the prefabricated laminated plates on two sides by adopting oblique steel bars; the lower half of the steel bar truss is positioned in the precast concrete bottom layer, and the upper half of the steel bar truss is positioned in the cast-in-place superposed layer; 4 embedded hoisting steel bars are embedded in the precast concrete bottom layer.
Further, the lower strip-shaped concrete member is three different members, and the first type is a building foundation; the second type is the top of the shear wall; the third type is a composite beam.
The utility model has the advantages that:
the beneficial effects of the utility model and the advantage need not special operation and can realize the two-way atress of superimposed sheet, the integral equipment in scene, and production simple process is favorable to mechanized, automatic, intelligent production. Convenient transportation and low cost. Not only has good economic benefit, but also has excellent stress performance. And the site operation is convenient, the construction period is short, the economic effect is good, the complex operation in the construction process is avoided, and the manufacturing cost is greatly reduced.
Drawings
Fig. 1 is a schematic plan view of a bidirectional assembled bidirectional floor slab with a laminated concrete reinforcing ring.
Fig. 2 is a schematic plan view of a prefabricated layer of a composite concrete reinforced ring bidirectional floor slab.
Fig. 3 is a schematic side view of a composite concrete reinforced ring bidirectional floor slab.
In the figure, 1 is a precast concrete bottom layer; 2, a cast-in-place laminated layer; 3 is a transverse connecting port; 4, prefabricating the bottom longitudinal steel bar of the laminated board; 5, prefabricating a transverse reinforcing steel bar at the bottom of the laminated board; 6 is a steel bar truss; 7, embedding hoisting steel bars; 8 is the longitudinal steel bar on the top of the cast-in-situ floor slab; 9 is a transverse reinforcing steel bar at the top of the cast-in-situ laminate; 10 is a transverse connecting reinforcing bar ring; and 11 is a lower strip-shaped concrete member.
Detailed Description
For further explanation of the present invention, the following detailed description of the present invention is provided with reference to the drawings and examples, which should not be construed as limiting the scope of the present invention.
Example (b): as shown in fig. 1-3, the utility model relates to a laminated concrete reinforced ring two-way floor slab, which comprises a precast concrete bottom layer 1, a cast-in-situ laminated layer 2, a transverse connector 3, a precast slab bottom longitudinal reinforcement 4, a precast slab bottom transverse reinforcement 5, a steel bar truss 6, a pre-buried hoisting reinforcement 7, a cast-in-situ slab top longitudinal reinforcement 8, a cast-in-situ slab top transverse reinforcement 9, a transverse connecting reinforcement ring 10 and a lower strip-shaped concrete member 11,
the composite concrete reinforced ring bidirectional floor slab is formed by splicing composite concrete reinforced ring bidirectional prefabricated floor slabs and casting concrete in situ;
the longitudinal ends of the precast concrete bottom layer 1 are respectively lapped on the top of the lower strip-shaped concrete member 11, the lapping length is 5 ~ 20mm, the longitudinal butted precast floor slab bottom transverse steel bars 5 are positioned on the upper part of the lower strip-shaped concrete member 11, and the opposite precast floor slab bottom transverse steel bars 5 are lapped one by one;
the precast concrete bottom layers 1 are transversely and one by one closed and close, the transverse connectors 3 of the adjacent precast concrete bottom layers 1 are aligned one by one, and transverse connecting reinforcing steel bar rings 10 are respectively arranged in each transverse connector 3; the transverse connecting reinforcement ring 10 is horizontal, and two ends of the transverse connecting reinforcement ring respectively span over two adjacent prefabricated floor bottom longitudinal reinforcements 4;
before the cast-in-place laminated layer 2 is cast, erecting cast-in-place laminate top longitudinal steel bars 8, uniformly distributing the cast-in-place laminate top longitudinal steel bars 8, and overlapping the longitudinally butted cast-in-place laminate top longitudinal steel bars 8;
erecting cast-in-place laminate top transverse steel bars 9, wherein the cast-in-place laminate top transverse steel bars 9 of the transversely adjacent laminated concrete reinforced ring bidirectional precast floor slab are uniformly distributed on the cast-in-place laminate top transverse steel bars 9 and are mutually lapped;
and pouring the cast-in-place laminated layer 2 after the assembly is finished.
The prefabricated concrete bottom layer 1 of the superposed concrete reinforced ring bidirectional prefabricated floor slab is rectangular as a whole, the lowest layer in the prefabricated concrete bottom layer 1 is uniformly distributed prefabricated floor slab bottom transverse reinforcing steel bars 5, the length of each prefabricated floor slab bottom transverse reinforcing steel bar 5 is equal to the width of the slab, and the prefabricated floor slab bottom transverse reinforcing steel bars 5 extend to two ends of the slab;
uniformly distributed prefabricated floor bottom longitudinal steel bars 4 are arranged above the prefabricated floor bottom transverse steel bars 5, and two ends of each prefabricated floor bottom longitudinal steel bar 4 extend out of two ends of a long edge of the prefabricated concrete bottom layer 1;
the side surfaces of two long edges of the precast concrete bottom layer 1 are uniformly provided with a plurality of transverse connectors 3, the transverse connectors 3 respectively extend to the outer sides of the outermost steel bar trusses 6 from the edges, and 2 ~ 4 prefabricated bottom longitudinal steel bars 4 are arranged on the outer sides of the outermost steel bar trusses 6;
the upper part of the precast concrete bottom layer 1 is a cast-in-place superposed layer 2, the top layer in the cast-in-place superposed layer 2 is cast-in-place plywood top transverse steel bars 9 which are uniformly distributed, and the lower part of the cast-in-place plywood top transverse steel bars 9 is cast-in-place plywood top longitudinal steel bars 8 which are vertically crossed and uniformly distributed with the cast-in-place plywood top transverse steel bars 9;
arranging a steel bar truss 6 in the precast concrete bottom layer 1, wherein the bottom of the steel bar truss 6 is provided with two precast slab bottom longitudinal steel bars 4, the top of the steel bar truss is provided with a cast-in-place slab top longitudinal steel bar 8, and the horizontal projection of the cast-in-place slab top longitudinal steel bar 8 is positioned between the two precast slab bottom longitudinal steel bars 4; connecting the top longitudinal steel bars 8 of the cast-in-place laminate with the bottom longitudinal steel bars 4 of the prefabricated laminate on two sides respectively by adopting oblique steel bars; the lower half of the steel bar truss 6 is positioned in the precast concrete bottom layer 1, and the upper half is positioned in the cast-in-place superposed layer 2; 4 embedded hoisting steel bars 7 are embedded in the precast concrete bottom layer 1.
The lower strip-shaped concrete member 11 is three different members, and the first type is a building foundation; the second type is the top of the shear wall; the third type is a composite beam.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (3)

1. The utility model provides a coincide concrete reinforcing bar ring two-way floor, includes precast concrete bottom (1), cast-in-place coincide layer (2), transverse connection mouth (3), longitudinal reinforcement (4) at the bottom of the precast floor, transverse reinforcement (5) at the bottom of the precast floor, steel bar truss (6), pre-buried hoist and mount reinforcing bar (7), cast-in-place floor top longitudinal reinforcement (8), cast-in-place floor top transverse reinforcement (9), transverse connection reinforcing bar ring (10), lower part bar concrete component (11), its characterized in that:
the composite concrete reinforced ring bidirectional floor slab is formed by splicing composite concrete reinforced ring bidirectional prefabricated floor slabs and casting concrete in situ;
the longitudinal ends of the precast concrete bottom layer (1) are respectively lapped on the top of the lower strip-shaped concrete member (11), the lapping length is 5 ~ 20mm, the longitudinally butted precast slab bottom transverse steel bars (5) are positioned on the upper part of the lower strip-shaped concrete member (11), and the opposite precast slab bottom transverse steel bars (5) are mutually lapped one by one;
the precast concrete bottom layers (1) are transversely and one by one closed and close, the transverse connectors (3) of the adjacent precast concrete bottom layers (1) are aligned one by one, and transverse connecting reinforcing steel bar rings (10) are respectively arranged in each transverse connector (3); the transverse connecting reinforcement ring (10) is horizontal, and two ends of the transverse connecting reinforcement ring respectively span two adjacent prefabricated floor bottom longitudinal reinforcements (4);
before the cast-in-place laminated layer (2) is cast, erecting cast-in-place laminate top longitudinal steel bars (8), uniformly distributing the cast-in-place laminate top longitudinal steel bars (8), and overlapping the longitudinally butted cast-in-place laminate top longitudinal steel bars (8);
erecting cast-in-place floor top transverse steel bars (9), wherein the cast-in-place floor top transverse steel bars (9) of the transversely adjacent laminated concrete steel bar ring bidirectional precast floor slabs are uniformly distributed and are mutually overlapped;
arranging a steel bar truss (6) in the precast concrete bottom layer (1), and burying 4 embedded hoisting steel bars (7) in the precast concrete bottom layer (1);
and pouring the cast-in-place laminated layer (2) after the assembly is finished.
2. A laminated concrete reinforced ring bidirectional floor slab as recited in claim 1, wherein: the prefabricated concrete bottom layer (1) of the bidirectional prefabricated floor slab with the superposed concrete reinforcement rings is integrally rectangular, the lowest layer in the prefabricated concrete bottom layer (1) is prefabricated floor slab bottom transverse reinforcements (5) which are uniformly distributed, the length of each prefabricated floor slab bottom transverse reinforcement (5) is the width of the slab, and the prefabricated floor slab bottom transverse reinforcements (5) extend to two ends of the slab;
the prefabricated floor bottom longitudinal reinforcements (4) are uniformly distributed above the prefabricated floor bottom transverse reinforcements (5), and two ends of each prefabricated floor bottom longitudinal reinforcement (4) extend out of two ends of a long edge of the prefabricated concrete bottom (1);
the side surfaces of two long edges of the precast concrete bottom layer (1) are uniformly provided with a plurality of transverse connectors (3), the transverse connectors (3) respectively extend to the outer sides of the outermost steel bar trusses (6) from the edges, and 2 ~ 4 prefabricated bottom longitudinal steel bars (4) are arranged on the outer sides of the outermost steel bar trusses (6);
the upper part of the precast concrete bottom layer (1) is provided with a cast-in-place superposed layer (2), the top layer in the cast-in-place superposed layer (2) is provided with cast-in-place slab top transverse steel bars (9) which are uniformly distributed, and the lower part of the cast-in-place slab top transverse steel bars (9) is provided with cast-in-place slab top longitudinal steel bars (8) which are vertically crossed and uniformly distributed with the cast-in-place slab top transverse steel bars;
the bottom of the steel bar truss (6) is provided with two prefabricated floor bottom longitudinal steel bars (4), the top is provided with a cast-in-place floor top longitudinal steel bar (8), and the horizontal projection of the cast-in-place floor top longitudinal steel bar (8) is positioned between the two prefabricated floor bottom longitudinal steel bars (4); connecting the top longitudinal steel bars (8) of the cast-in-place floor with the bottom longitudinal steel bars (4) of the prefabricated floor on two sides respectively by adopting oblique steel bars; the lower half of the steel bar truss (6) is positioned in the precast concrete bottom layer (1), and the upper half is positioned in the cast-in-place superposed layer (2).
3. A laminated concrete reinforced ring bidirectional floor slab as recited in claim 1, wherein: the lower strip-shaped concrete member (11) is three different members, and the first type is a building foundation; the second type is the top of the shear wall; the third type is a composite beam.
CN201920121505.1U 2019-01-24 2019-01-24 Bidirectional floor slab with superposed concrete reinforcing steel rings Expired - Fee Related CN209817217U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920121505.1U CN209817217U (en) 2019-01-24 2019-01-24 Bidirectional floor slab with superposed concrete reinforcing steel rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920121505.1U CN209817217U (en) 2019-01-24 2019-01-24 Bidirectional floor slab with superposed concrete reinforcing steel rings

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Publication Number Publication Date
CN209817217U true CN209817217U (en) 2019-12-20

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Effective date of registration: 20200820

Address after: 250000 No. 2016 Changxing Road, Nanyuan, Guidezhen Economic Development Zone, Changqing District, Jinan City, Shandong Province

Patentee after: Shandong Huifu Construction Group Construction Industry Co.,Ltd.

Address before: 110168 Liaoning province Shenyang Hunnan Hunnan Road No. 9

Patentee before: SHENYANG JIANZHU University

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191220

Termination date: 20210124