CN211646903U - Prefabricated section steel concrete superimposed sheet - Google Patents
Prefabricated section steel concrete superimposed sheet Download PDFInfo
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- CN211646903U CN211646903U CN201921998416.1U CN201921998416U CN211646903U CN 211646903 U CN211646903 U CN 211646903U CN 201921998416 U CN201921998416 U CN 201921998416U CN 211646903 U CN211646903 U CN 211646903U
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Abstract
A prefabricated steel reinforced concrete laminated slab comprises a slab bottom layer steel bar mesh, section steel, concrete and a slab top layer steel bar mesh, wherein the slab bottom layer steel bar mesh is paved by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode, the section steel is longitudinally arranged on the upper surface of the slab bottom layer steel bar mesh at equal intervals, the section steel and the slab bottom layer steel bar mesh are packaged in concrete to form a bidirectional ribbed concrete precast slab or a longitudinal ribbed concrete precast slab, a post-cast concrete area is formed between a longitudinal rib of the bidirectional ribbed concrete precast slab and a transverse rib cross or between adjacent longitudinal ribs of the longitudinal ribbed concrete precast slab, the slab top layer steel bar mesh which is formed by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode is paved on the upper surfaces of the longitudinal ribs and the transverse rib of the bidirectional ribbed concrete precast slab or on the longitudinal ribs of the longitudinal ribbed concrete precast slab, the concrete is cast in the post-cast concrete area, and (5) encapsulating the plate top layer reinforcing mesh in concrete. The construction process is simplified, and the construction period is shortened.
Description
Technical Field
The utility model belongs to the technical field of the superimposed sheet, concretely relates to prefabricated shaped steel concrete superimposed sheet.
Background
The composite floor slab is an integral assembled floor slab formed by laminating precast concrete slabs and cast-in-place reinforced concrete layers, the composite floor slab is divided into a concrete composite slab and a prestressed concrete composite slab, and the precast concrete slabs are one of the components of the floor slab structure and are permanent templates of the cast-in-place reinforced concrete composite layers. The prefabricated prestressed concrete composite slab can be considered according to a cast-in-place integral floor slab because the cast-in-place concrete composite layer is thicker, and can be used for various building floor slabs or roof slabs in non-earthquake areas and earthquake areas. The composite floor slab has good integrity, the upper and lower surfaces of the slab are smooth, the decoration of a finish coat is convenient, and the composite floor slab is suitable for high-rise buildings and large-bay buildings with higher requirement on the integral rigidity. One component of the composite floor slab is a cast-in-place concrete layer, the thickness of which varies with the span of the floor slab but is at least equal to the thickness of the precast concrete layer. The composite floor slab has good integrity, continuity and seismic performance, flexible plane size, large floor slab span, relatively small full height, template saving, light weight of a single component, good elasticity and convenient transportation and installation. In a word, the composite floor slab has the advantages of both prefabricated and cast-in-place floor slabs and is better applied to high-rise and earthquake-resistant buildings.
Practice proves that during construction of the laminated floor slab, due to the insufficient bearing capacity and rigidity of the precast concrete slab, in order to enable the precast slab to bear a cast-in-place concrete laminated layer and construction load, the lower span, the support edge and the like of the precast concrete slab are provided with the upright posts and the cross braces to form temporary supports, and the requirements on the support spacing, the support top surface flatness, the top surface of a wall or a beam for supporting the precast slab and the like are very strict. In order to overcome these problems, a prestressed concrete composite slab with reverse ribs has been proposed, which can be classified into an inverted T-shaped composite slab and a ribbed thin plate composite slab according to the type of a prefabricated prestressed concrete base slab. The inverted T-shaped laminated slab is formed by taking a prefabricated prestressed concrete inverted T-shaped plate as a bottom plate and post-pouring concrete into a groove between ribs of the installed inverted T-shaped plate, wherein the thickness of a rib part of the laminated slab is the final design thickness of the laminated slab; the ribbed thin plate laminated slab is a bidirectional reinforced floor slab formed by using a prefabricated prestressed ribbed thin plate as a bottom plate, arranging transverse perforated steel bars in a plate rib preformed hole, arranging fold-line-shaped anti-cracking steel bars at a seam of the bottom plate and pouring concrete, wherein the rib plates of the slab can be made into rectangular ribs and T-shaped ribs. The inverted T-shaped and ribbed thin plate composite slab improves the rigidity and bearing capacity of the thin plate and increases the adhesive force between the prefabricated thin plate and the composite layer due to the existence of the reverse ribs, but in order to meet the requirements of higher bearing capacity and rigidity in the construction stage, the prestressed concrete composite slab with the reverse ribs needs to be provided with the encrypted rib beams, so that the dead weight of the prefabricated concrete slab can be increased, and the adverse effects of hoisting, transportation and construction are also brought. For this reason, more effective measures are required to solve the actual problems. Therefore, the prefabricated steel reinforced concrete composite slab is provided.
SUMMERY OF THE UTILITY MODEL
In order to realize the purpose, the utility model provides a prefabricated section steel concrete laminated slab, which comprises a slab bottom layer reinforcing mesh, section steel, concrete and a slab top layer reinforcing mesh, the steel bar mesh at the bottom of the slab is paved by crosswise distributed steel bars and longitudinally distributed steel bars, profile steels are longitudinally arranged on the upper surface of the steel bar mesh at equal intervals, the profile steels and the steel bar mesh at the bottom of the slab are packaged in concrete to form a bidirectional ribbed concrete precast slab, and the longitudinal ribs and the transverse ribs of the bidirectional ribbed concrete precast slab are arranged in a cross way to form a groove-shaped post-cast concrete area, laying a plate top layer steel bar mesh which is formed by crosswise arranging transverse distribution steel bars and longitudinal distribution steel bars on the upper surfaces of longitudinal ribs and transverse ribs of the bidirectional ribbed concrete precast slab, and (5) pouring concrete in the rear concrete pouring area, and packaging the plate top layer reinforcing mesh in the concrete.
The section steel is a square steel pipe, I-shaped steel or a honeycomb beam, and the through hole in the honeycomb beam is a circular hole or a hexagonal hole.
A prefabricated section steel concrete laminated slab comprises a slab bottom layer steel bar mesh, section steel, concrete and a slab top layer steel bar mesh, wherein the slab bottom layer steel bar mesh is paved by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode, the section steel is longitudinally arranged on the upper surface of the slab bottom layer steel bar mesh at equal intervals, the section steel and the slab bottom layer steel bar mesh are packaged in concrete to form a longitudinal rib concrete prefabricated slab, a post-cast concrete area is formed between adjacent longitudinal ribs of the longitudinal rib concrete prefabricated slab, the slab top layer steel bar mesh which is formed by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode is paved on the upper surface of the longitudinal ribs of the longitudinal rib concrete prefabricated slab, concrete is poured in the post-cast concrete area, and the slab top layer steel bar mesh is packaged in the concrete.
The section steel is a square steel pipe, I-shaped steel or a honeycomb beam, and the through hole in the honeycomb beam is a circular hole or a hexagonal hole.
A construction process of a prefabricated steel reinforced concrete composite slab comprises the following steps:
step 1: the manufacture of the components is carried out,
prefabricating a bidirectional ribbed concrete slab: firstly, transversely distributed reinforcing steel bars and longitudinally distributed reinforcing steel bars are paved in a cross distribution mode to form a plate bottom reinforcing mesh; placing the section steel at the designated position of the steel bar at the bottom layer of the slab, and pouring partial concrete to form the bidirectional ribbed concrete precast slab; the longitudinal ribs and the transverse ribs of the bidirectional ribbed concrete precast slab are crossed to form a post-cast concrete area, and the prefabrication of the bidirectional ribbed concrete slab is completed;
step 2: the assembly is installed, and the assembly is installed,
and (2) hoisting the prefabricated bidirectional ribbed concrete slab on part of the support, paving a slab top layer reinforcing mesh on the upper surfaces of the longitudinal ribs and the transverse ribs of the bidirectional ribbed concrete prefabricated slab in a cross distribution mode by using transverse distribution reinforcing steel bars and longitudinal distribution reinforcing steel bars, pouring concrete into a post-cast concrete area to form a post-cast concrete slab band, and simultaneously packaging the slab top layer reinforcing steel bars in the concrete to form the prefabricated section steel concrete laminated slab.
A construction process of a prefabricated steel reinforced concrete composite slab comprises the following steps:
step 1: the manufacture of the components is carried out,
prefabricating a unidirectional ribbed concrete slab: firstly, transversely distributed reinforcing steel bars and longitudinally distributed reinforcing steel bars are paved in a cross distribution mode to form a plate bottom reinforcing mesh; placing the section steel at the designated position of the steel bar at the bottom layer of the slab, and pouring partial concrete to form the longitudinal ribbed concrete precast slab; meanwhile, a post-pouring concrete area is formed between two adjacent longitudinal ribs of the longitudinal ribbed concrete precast slab, so that the unidirectional ribbed concrete precast slab is formed;
step 2: the assembly is installed, and the assembly is installed,
and hoisting the prefabricated unidirectional ribbed concrete slab on part of the support, paving a slab top layer reinforcing mesh on the upper surface of a longitudinal rib of the prefabricated ribbed concrete slab by using transverse distribution reinforcing steel bars and longitudinal distribution reinforcing steel bars in a cross distribution mode, pouring concrete into a post-cast concrete area to form a post-cast concrete slab band, and packaging the slab top layer reinforcing steel bars in the concrete to form the prefabricated section steel concrete laminated slab.
The utility model has the advantages that: the steel members are added into the prefabricated bottom plate, so that the laminated slab has enough bearing capacity and rigidity to meet major structural requirements, and meanwhile, most supports during construction of the prefabricated concrete laminated slab are reduced or cancelled, the construction process is simplified, and the construction period is shortened.
Drawings
Fig. 1 is a top plan view (two-way rib) before the prefabricated steel reinforced concrete composite slab of the embodiment 1 of the utility model is poured;
FIG. 2 is a sectional view taken along the direction A-A before the prefabricated steel reinforced concrete composite slab shown in FIG. 1 of the present invention is poured;
FIG. 3 is a cross-sectional view taken along the direction B-B before the prefabricated steel reinforced concrete composite slab shown in FIG. 1 of the present invention is poured;
fig. 4 is a top view (two-way rib) of the prefabricated steel reinforced concrete composite slab of the embodiment 1 of the present invention after pouring;
FIG. 5 is a C-C sectional view of the prefabricated steel reinforced concrete composite slab of FIG. 4 according to the present invention after pouring;
FIG. 6 is a D-D cross sectional view of the prefabricated steel reinforced concrete composite slab of FIG. 5 according to the present invention after pouring;
fig. 7 is a top plan view (two-way rib) before the prefabricated steel reinforced concrete composite slab of the embodiment 2 of the present invention is poured;
FIG. 8 is a cross-sectional view taken along the direction E-E before pouring the prefabricated steel reinforced concrete composite slab of FIG. 7 according to the present invention;
FIG. 9 is a sectional view taken along the direction F-F of the prefabricated steel reinforced concrete composite slab of FIG. 7 according to the present invention before pouring;
fig. 10 is a top view (two-way rib) of the prefabricated steel reinforced concrete composite slab of the embodiment 2 of the present invention after pouring;
FIG. 11 is a sectional view taken along the direction G-G after the prefabricated steel reinforced concrete composite slab of FIG. 10 of the present invention is poured;
FIG. 12 is a sectional view taken along the direction H-H of the prefabricated steel reinforced concrete composite slab of FIG. 10 according to the present invention after pouring;
fig. 13 is a top view (one-way rib) of the prefabricated steel reinforced concrete composite slab of embodiment 3 of the present invention before pouring;
FIG. 14 is a cross-sectional view taken along the direction I-I before pouring the prefabricated steel reinforced concrete composite slab of FIG. 13 according to the present invention;
FIG. 15 is a J-J sectional view of the prefabricated steel reinforced concrete composite slab of FIG. 13 according to the present invention before pouring;
fig. 16 is a top view (one-way rib) of the prefabricated steel reinforced concrete composite slab according to the embodiment 3 of the present invention after pouring;
FIG. 17 is a cross-sectional view taken along the direction K-K after the prefabricated steel reinforced concrete composite slab of FIG. 16 of the present invention is poured;
FIG. 18 is a sectional view taken along the L-L direction of the prefabricated steel reinforced concrete composite slab of FIG. 16 according to the present invention after pouring;
fig. 19 is a top plan view (one-way rib) before the prefabricated steel reinforced concrete composite slab of the embodiment 4 of the present invention is poured;
FIG. 20 is a cross-sectional view taken along the direction M-M before the prefabricated steel reinforced concrete composite slab of FIG. 19 of the present invention is poured;
FIG. 21 is a cross-sectional view taken in the N-N direction of the prefabricated steel reinforced concrete composite slab of FIG. 19 according to the present invention before pouring;
fig. 22 is a top view (one-way rib) of the prefabricated steel reinforced concrete composite slab according to the embodiment of the present invention after pouring;
FIG. 23 is a cross-sectional view taken in the direction of O-O after the prefabricated steel reinforced concrete composite slab of FIG. 22 of the present invention is poured;
FIG. 24 is a P-P cross sectional view of the prefabricated steel reinforced concrete composite slab of FIG. 22 according to the present invention after pouring;
FIG. 25 is a schematic structural view of the prefabricated section steel concrete composite slab section steel of the present invention; wherein FIG. 25(a) is a schematic illustration of an I-steel structure; FIG. 25(b) is a schematic view of a honeycomb beam with circular holes; FIG. 25(c) is a schematic view of a honeycomb beam with hexagonal cells; FIG. 25(d) is a schematic view of a square steel pipe structure;
1-post-casting concrete plate strips; 2-longitudinal ribs; 3-transversely distributing reinforcing steel bars; 4-longitudinally distributing reinforcing steel bars; 5-I-steel; 6-square steel tube; 7-transverse ribs.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
The section steel in the embodiment is I-shaped steel, and the precast slab is a bidirectional ribbed concrete slab.
As shown in fig. 1 to 6 and fig. 25(a), a prefabricated steel reinforced concrete composite slab includes a bottom mat reinforcement, i-beams 5, concrete and a top mat reinforcement, the reinforcing mesh at the bottom layer of the slab is paved by crosswise distributed reinforcing steel bars 3 and longitudinally distributed reinforcing steel bars 4, I-shaped steel 5 is welded on the upper surface of the reinforcing mesh at equal intervals longitudinally, the I-shaped steel 5 and the reinforcing mesh at the bottom layer of the slab are packaged in concrete to form a bidirectional ribbed concrete precast slab, and the longitudinal ribs 2 and the transverse ribs 7 of the bidirectional ribbed concrete precast slab are arranged in a crossed manner to form a groove-shaped rear pouring concrete area, laying a plate top layer reinforcing mesh which is formed by crosswise arranging transverse distribution reinforcing steel bars 3 and longitudinal distribution reinforcing steel bars 4 on the upper surfaces of longitudinal ribs 2 and transverse ribs 7 of the bidirectional ribbed concrete precast slab, and (5) pouring concrete in the rear concrete pouring area, and packaging the plate top layer reinforcing mesh in the concrete.
A construction process of a prefabricated steel reinforced concrete composite slab comprises the following steps:
step 1: the manufacture of the components is carried out,
prefabricating a bidirectional ribbed concrete slab: firstly, transversely distributed reinforcing steel bars 3 and longitudinally distributed reinforcing steel bars 4 are paved in a cross distribution mode to form a plate bottom reinforcing mesh; placing the I-shaped steel 5 at the designated position of the steel bar at the bottom layer of the slab, and pouring partial concrete to form the bidirectional ribbed concrete precast slab; the longitudinal ribs 2 and the transverse ribs 7 of the bidirectional ribbed concrete precast slab are crossed to form a post-cast concrete area, and the prefabrication of the bidirectional ribbed concrete slab is completed;
step 2: the assembly is installed, and the assembly is installed,
and (2) hoisting the prefabricated bidirectional ribbed concrete slab on part of the support, paving a slab top layer reinforcing mesh on the upper surfaces of the longitudinal ribs 2 and the transverse ribs 7 of the bidirectional ribbed concrete prefabricated slab in a cross distribution mode by virtue of transverse distribution reinforcing steel bars 3 and longitudinal distribution reinforcing steel bars 4, then pouring concrete into a post-cast concrete area to form a post-cast concrete slab band 1, and simultaneously packaging the slab top layer reinforcing steel bars in the concrete to form the prefabricated steel concrete laminated slab.
Example 2
Example 2 differs from example 1 in that the section steel is a square steel pipe, as shown in fig. 7 to 12 and fig. 25 (b).
Example 3
In the embodiment, the section steel is a square steel pipe, and the precast slab is a unidirectional ribbed concrete slab.
As shown in fig. 13 to 18, a prefabricated section steel concrete composite slab comprises a slab bottom layer steel bar mesh, square steel pipes 6, concrete and a slab top layer steel bar mesh, wherein the slab bottom layer steel bar mesh is laid by arranging transverse distribution steel bars 3 and longitudinal distribution steel bars 4 in a crossed manner, the square steel pipes 6 are welded on the upper surface of the slab bottom layer steel bar mesh at equal intervals in the longitudinal direction, the square steel pipes 6 and the slab bottom layer steel bar mesh are packaged in concrete to form a longitudinal rib concrete prefabricated slab, a concrete area is poured between adjacent longitudinal ribs 2 of the longitudinal rib concrete prefabricated slab in a form, the slab top layer steel bar mesh formed by arranging the transverse distribution steel bars 3 and the longitudinal distribution steel bars 4 in a crossed manner is laid on the upper surface of the longitudinal ribs 2 of the longitudinal rib concrete prefabricated slab, the concrete is poured in the concrete area, and the slab top layer steel bar mesh is packaged in the concrete.
A construction process of a prefabricated steel reinforced concrete composite slab comprises the following steps:
step 1: the manufacture of the components is carried out,
prefabricating a unidirectional ribbed concrete slab: firstly, transversely distributed reinforcing steel bars 3 and longitudinally distributed reinforcing steel bars 4 are paved in a cross distribution mode to form a plate bottom reinforcing mesh; placing the square steel tube 6 at the appointed position of the bottom layer steel bar of the plate, pouring partial concrete to form a longitudinal ribbed concrete precast slab; meanwhile, a post-pouring concrete area is formed between two adjacent longitudinal ribs 2 of the longitudinal ribbed concrete precast slab, so that the unidirectional ribbed concrete precast slab is formed;
step 2: the assembly is installed, and the assembly is installed,
the prefabricated unidirectional ribbed concrete slab is hung on a part of the support, a slab top layer reinforcing mesh is laid on the upper surface of a longitudinal rib 2 of the prefabricated ribbed concrete slab by transverse distribution reinforcing steel bars 3 and longitudinal distribution reinforcing steel bars 4 in a cross distribution mode, concrete is poured into a post-cast concrete area to form a post-cast concrete slab band 1, and meanwhile, the slab top layer reinforcing steel bars are packaged in the concrete to form the prefabricated section steel concrete composite slab.
Example 4
Example 4 is different from example 3 in that the section steel is an i-section steel, as shown in fig. 19 to 24.
Claims (4)
1. The prefabricated section steel concrete laminated slab is characterized by comprising a slab bottom layer steel bar mesh, section steel, concrete and a slab top layer steel bar mesh, wherein the slab bottom layer steel bar mesh is paved by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode, the section steel is longitudinally arranged on the upper surface of the slab bottom layer steel bar mesh at equal intervals, the section steel and the slab bottom layer steel bar mesh are packaged in concrete to form a bidirectional ribbed concrete prefabricated slab, a longitudinal rib and a transverse rib of the bidirectional ribbed concrete prefabricated slab are crossed and arranged to form a groove-shaped post-cast concrete area, the slab top layer steel bar mesh which is formed by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode is paved on the upper surfaces of a longitudinal rib and the transverse rib of the bidirectional ribbed concrete prefabricated slab, the concrete is poured in the post-cast concrete area, and the slab top layer steel bar mesh is packaged in the concrete.
2. The prefabricated section steel concrete composite slab as claimed in claim 1, wherein: the section steel is a square steel pipe, I-shaped steel or a honeycomb beam, and the through hole in the honeycomb beam is a circular hole or a hexagonal hole.
3. The prefabricated section steel concrete laminated slab is characterized by comprising a slab bottom layer steel bar mesh, section steel, concrete and a slab top layer steel bar mesh, wherein the slab bottom layer steel bar mesh is paved by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode, the section steel is longitudinally arranged on the upper surface of the slab bottom layer steel bar mesh at equal intervals, the section steel and the slab bottom layer steel bar mesh are packaged in the concrete to form a longitudinal rib concrete prefabricated slab, a post-cast concrete area is formed between adjacent longitudinal ribs of the longitudinal rib concrete prefabricated slab, the slab top layer steel bar mesh which is formed by transversely distributed steel bars and longitudinally distributed steel bars in a crossed mode is paved on the upper surface of the longitudinal ribs of the longitudinal rib concrete prefabricated slab, the concrete is poured in the post-cast concrete area, and the slab top layer steel bar mesh is packaged in the concrete.
4. A prefabricated steel reinforced concrete composite slab as claimed in claim 3, wherein: the section steel is a square steel pipe, I-shaped steel or a honeycomb beam, and the through hole in the honeycomb beam is a circular hole or a hexagonal hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998416.1U CN211646903U (en) | 2019-11-19 | 2019-11-19 | Prefabricated section steel concrete superimposed sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921998416.1U CN211646903U (en) | 2019-11-19 | 2019-11-19 | Prefabricated section steel concrete superimposed sheet |
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| CN211646903U true CN211646903U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921998416.1U Active CN211646903U (en) | 2019-11-19 | 2019-11-19 | Prefabricated section steel concrete superimposed sheet |
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