CN218346548U

CN218346548U - Large-area prestress laminated slab structure

Info

Publication number: CN218346548U
Application number: CN202222317538.8U
Authority: CN
Inventors: 刘世伟; 刘金华; 刘志华; 刘新华; 全明霞; 付磊; 严文才
Original assignee: Hubei Zhoutian Construction Group Co ltd
Current assignee: Hubei Zhoutian Construction Group Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2023-01-20
Anticipated expiration: 2032-09-01

Abstract

The utility model provides a large tracts of land prestressing force superimposed sheet structure, includes lower floor's reinforcing bar net (1), its characterized in that: the upper portion of lower floor's reinforcing bar net (1) is provided with upper reinforcing bar net (2), one side of lower floor's reinforcing bar net (1) is fixed and is provided with left anchor seat (3), the fixed right anchor seat (4) that is provided with of opposite side of lower floor's reinforcing bar net (1), be fixed with arc prestressing tendons (5) that upwards arch up between left anchor seat (3) and right anchor seat (4), perhaps the both ends of arc prestressing tendons (5) are fixed mutually through connecting piece and left anchor seat (3) and right anchor seat (4) respectively, the upper surface or the lower surface of upper reinforcing bar net (2) are provided with coincide layer (10), this application is rational in infrastructure, construction convenience, reinforcing bar intensity in the reinforced concrete member has obtained make full use of, bearing capacity and anti-cracking performance have all can obtained the improvement, even can not make the concrete draw and appear the crack when bearing great load yet.

Description

Large-area prestress laminated slab structure

Technical Field

The utility model relates to a prestressing force superimposed sheet structure especially relates to a large tracts of land prestressing force superimposed sheet structure, belongs to building element technical field.

Background

The laminated slab has certain technical advantages in the building process, has good integrity and continuity, is suitable for large-scale use in large bay and large-area use, and is convenient to construct. In the structure of common reinforced concrete, because the concrete ultimate tensile strain becomes low, the strain of the steel bar in the concrete member greatly exceeds the ultimate tensile strain of the concrete, especially in a plate-shaped structure with a large area and a large bay, the plate-shaped structure needs to bear changeable external load besides the load of the self weight, and when the concrete member bears a large load, the concrete is easily pulled to generate cracks, and the safety of the concrete plate structure is influenced seriously. It is not reasonable to adopt high strength reinforcing steel bar to large area concrete slab or superimposed sheet one side, and reinforcing steel bar strength in the reinforced concrete member is not fully utilized. The current situation is changed by a novel large-area laminated slab structure which is convenient to construct, economical and applicable and high in bearing capacity.

Disclosure of Invention

The utility model provides an aim at simple to current concrete coincide plate structure, bearing capacity is limited, be used for the area great, there is the technical bottleneck in the great building structure between the break, make the concrete to be drawn easily and the crack appears when bearing great load, the not good defect of anti-cracking property is not enough, provide a rational in infrastructure, construction convenience, reinforcing bar intensity in the reinforced concrete component has obtained make full use of, bearing capacity and anti-cracking property all can obtain the improvement, even can not make the concrete draw yet and the cracked large tracts of land prestressing force coincide plate structure appears when bearing great load.

In order to achieve the purpose, the technical solution of the application is as follows: the utility model provides a large tracts of land prestressing force superimposed sheet structure, includes lower floor's reinforcing bar net, its characterized in that: the upper part of the lower layer reinforcing mesh is provided with an upper layer reinforcing mesh, one side of the lower layer reinforcing mesh is fixedly provided with a left anchoring seat, the other side of the lower layer reinforcing mesh is fixedly provided with a right anchoring seat, an upward arched arc-shaped prestressed rib is fixed between the left anchoring seat and the right anchoring seat, or the two ends of the arc-shaped prestressed rib are respectively fixed with the left anchoring seat and the right anchoring seat through connecting pieces.

Furthermore, lower floor's reinforcing bar net and upper strata reinforcing bar net adopt vertically and horizontally staggered reinforcing bar fixed respectively to form, connect fixedly between lower floor's reinforcing bar net and the upper strata reinforcing bar net through many vertical reinforcing bars.

Furthermore, the left anchoring seat and the right anchoring seat are steel structural members with steel bar fixing slotted holes or notches, are in a single shape or a long strip shape, and are welded or anchored on the lower layer steel bar net.

Furthermore, the connecting piece includes connecting block, first dead lever and second dead lever, and the both ends of arc prestressing tendons are fixed with the connecting block respectively, are fixed mutually with the one end of first dead lever and second dead lever on the connecting block respectively, and first dead lever and second dead lever are the V type and distribute, and the other end of first dead lever and second dead lever is fixed respectively on left anchor seat or right anchor seat.

Furthermore, the connecting piece includes connecting block and arc dead lever, and the both ends of arc prestressing tendons are fixed with the connecting block respectively to the connecting block is fixed at the middle part of arc dead lever, and the both ends of arc dead lever are fixed respectively on left anchor seat or right anchor seat.

Furthermore, the arc-shaped prestressed tendons adopt steel bars in an elastic deformation state, the length of the arc-shaped prestressed tendons is larger than the linear distance between the installation parts of the left anchoring seat and the right anchoring seat, and the height of the arc surfaces of the arc-shaped prestressed tendons is smaller than or equal to the distance between the lower layer of steel bar mesh and the upper layer of steel bar mesh.

Furthermore, the area between the lower layer of reinforcing mesh and the upper layer of reinforcing mesh and the surrounding area is a concrete pouring area.

Compared with the prior art, the beneficial effect of this application is:

1. the application adopts the arc prestressed tendons on the basis of the steel bar framework structure, certain prestress is applied to the prestressed tendons before use to form an arc structure arched upwards, the existing prestress of the arc prestressed tendons is firstly counteracted when the laminated plate structure bears larger load, and the strength of steel bars in the reinforced concrete member is fully utilized.

2. This application adopts the fixed arc prestressing tendons of anchor seat, can adopt multiple connection fixed mode between anchor seat and the arc prestressing tendons, and the installation anchor is very convenient, has guaranteed the reliability of connecting to can adapt to the installation needs of different thickness superimposed sheets.

3. This application knot is rational in infrastructure, and construction convenience, bearing capacity and anti cracking performance have all obtained improving, even can not make the concrete to be drawn and the crack appears when bearing great load yet, can wide application in the great, great building structure of opening a room of area.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present application.

Fig. 2 is a top view of the interior of fig. 1.

Fig. 3 is a schematic structural diagram of a second embodiment of the present application.

Fig. 4 is an interior plan view of fig. 3.

Fig. 5 is a schematic structural diagram of a second embodiment of the present application.

Fig. 6 is an interior top view of fig. 5.

In the figure: lower floor's reinforcing bar net 1, upper reinforcing bar net 2, left anchor seat 3, right anchor seat 4, arc prestressing tendons 5, connecting block 6, first dead lever 7, second dead lever 8, arc dead lever 9, concrete placement region 10.

Detailed Description

The present application is described in further detail below with reference to the following description of the figures and the detailed description.

Referring to fig. 1 to 6, the application of the large-area prestressed laminated slab structure includes a lower layer of reinforcing mesh 1, and is characterized in that: the upper portion of lower floor's reinforcing bar net 1 is provided with upper reinforcing bar net 2, and one side of lower floor's reinforcing bar net 1 is fixed and is provided with left anchor socket 3, and the opposite side of lower floor's reinforcing bar net 1 is fixed and is provided with right anchor socket 4, is fixed with the arc prestressing tendons 5 that upwards arches between left anchor socket 3 and the right anchor socket 4, perhaps the both ends of arc prestressing tendons 5 are fixed mutually through connecting piece and left anchor socket 3 and right anchor socket 4 respectively.

Lower floor's reinforcing bar net 1 and upper reinforcing bar net 2 adopt vertically and horizontally staggered's reinforcing bar to fix respectively and form, connect fixedly through many vertical reinforcing bars between lower floor's reinforcing bar net 1 and the upper reinforcing bar net 2.

The left anchoring seat 3 and the right anchoring seat 4 are steel structural members with steel bar fixing slotted holes or notches, and the left anchoring seat 3 and the right anchoring seat 4 are in a single shape or a long strip shape and are welded or anchored on the lower layer steel bar mesh 1.

The connecting piece includes connecting block 6, first dead lever 7 and second dead lever 8, and the both ends of arc prestressing tendons 5 are fixed with connecting block 6 respectively, are fixed mutually with the one end of first dead lever 7 and second dead lever 8 on the connecting block 6 respectively, and first dead lever 7 and second dead lever 8 are the V type and distribute, and the other end of first dead lever 7 and second dead lever 8 is fixed respectively on left anchor seat 3 or right anchor seat 4.

The connecting piece includes connecting block 6 and arc dead lever 9, and the both ends of arc prestressing tendons 5 are fixed with connecting block 6 respectively to connecting block 6 is fixed at the middle part of arc dead lever 9, and the both ends of arc dead lever 9 are fixed respectively on left anchor seat 3 or right anchor seat 4.

The arc-shaped prestressed tendons 5 are reinforcing steel bars in an elastic deformation state, the length of the arc-shaped prestressed tendons 5 is larger than the linear distance between the installation parts of the left anchoring seat 3 and the right anchoring seat 4, and the height of the arc surfaces of the arc-shaped prestressed tendons 5 is smaller than or equal to the distance between the lower-layer reinforcing mesh 1 and the upper-layer reinforcing mesh 2.

The concrete pouring area 10 is formed between the lower layer reinforcing mesh 1 and the upper layer reinforcing mesh 2 and in the surrounding area.

Referring to the attached drawing 1 in particular, in order to solve the problem that the bearing capacity of a single concrete laminated slab with a large area is limited, the strength of steel bars in a reinforced concrete member is fully utilized, and meanwhile, the condition that cracks are easy to appear after the large-area laminated slab bears load is avoided. Be provided with upper reinforcing bar net 2 and lower floor reinforcing bar net 1 in the superimposed sheet body, lower floor's reinforcing bar net 1 and upper reinforcing bar net 2 adopt vertically and horizontally staggered's reinforcing bar to fix respectively and form, connect fixedly through many vertical steel bars between lower floor's reinforcing bar net 1 and the upper reinforcing bar net 2, also can adopt welding or the fixed mode of ligature to set up the steel reinforcement skeleton texture, and whole cast in situ forms.

Be provided with arc prestressing tendons 5 in the middle part of the perpendicular stress surface of superimposed sheet body, arc prestressing tendons 5 be one or be provided with many side by side, and arc prestressing tendons 5 adopts ordinary reinforcing bar to apply certain prestressing force and forms the arc structure of hunch-up, also just also need apply certain prestressing force for arc prestressing tendons 5 earlier, accomplishes the anchor back of arc prestressing tendons 5, then pours the concrete, forms monolithic structure. In order to ensure the reliability of bonding and connection and fixation with concrete, the arc-shaped prestressed tendons 5 adopt twisted steel bars, indented steel wires or steel strands, and rust prevention and flaw detection treatment work needs to be done before use. The size of the prestress is comprehensively determined according to the span, the thickness and the theoretical bearing capacity of the on-site laminated slab and the diameter of the arc-shaped prestressed tendon 5. When bearing a large load, the laminated plate structure firstly offsets the pre-pressure of the arc-shaped prestressed tendon 5, and then enables the concrete to be pressed or pulled, so that the strength of the steel bar is fully utilized, the bearing capacity is enhanced, and the condition that the concrete is pulled to generate cracks is fundamentally avoided.

In order to realize the anchor to arc prestressing tendons 5, this application is provided with left anchor seat 3 in the fixed one side of lower floor's reinforcing bar net 1, and the fixed right anchor seat 4 that is provided with of opposite side of lower floor's reinforcing bar net 1, and left anchor seat 3 and right anchor seat 4 can the symmetry set up, also can the asymmetric setting. The left anchoring seat 3 and the right anchoring seat 4 are steel structural members with steel bar fixing slotted holes or notches, and the left anchoring seat 3 and the right anchoring seat 4 are single block-shaped or strip-shaped and are welded or anchored on the lower layer steel bar mesh 1. An arc-shaped prestressed tendon 5 which is arched upwards is fixed between the left anchoring seat 3 and the right anchoring seat 4, one end of the arc-shaped prestressed tendon 5 is fixed on the left anchoring seat 3, and the other end of the arc-shaped prestressed tendon 5 is fixed on the right anchoring seat 4.

Can also realize being connected fixedly between arc prestressing tendons 5's tip and left anchor seat 3 or the right anchor seat 4 through the connecting piece, the connecting piece includes connecting block 6, first dead lever 7 and second dead lever 8, arc prestressing tendons 5's both ends are fixed with connecting block 6 respectively, it is fixed mutually with the one end of first dead lever 7 and second dead lever 8 respectively on the connecting block 6, first dead lever 7 and second dead lever 8 are the V type and distribute, the other end of first dead lever 7 and second dead lever 8 is fixed respectively on left anchor seat 3 or right anchor seat 4.

The other fixing mode is that the connecting piece adopts a connecting block 6 and an arc-shaped fixing rod 9, the two ends of the arc-shaped prestressed tendon 5 are respectively fixed with the connecting block 6, the connecting block 6 is fixed in the middle of the arc-shaped fixing rod 9, and the two ends of the arc-shaped fixing rod 9 are respectively fixed on the left anchoring seat 3 or the right anchoring seat 4. The arc-shaped fixing rod 9 only plays a role in fixed connection, is convenient to install and weld, reduces welding joints, can also provide certain elastic support, and can adapt to the thicknesses of different superposed plates.

The utility model provides an arc prestressing tendons 5's length is greater than the straight line interval of installation position between left anchor seat 3 and the right anchor seat 4, and the arc surface height less than or equal to of arc prestressing tendons 5 is the interval between lower floor's reinforcing bar net 1 and the upper reinforcing bar net 2, and the arc prestressing tendons 5 of being convenient for like this are installed between lower floor's reinforcing bar net 1 and upper reinforcing bar net 2. After concrete is poured, accessories such as a lower-layer reinforcing mesh 1, an upper-layer reinforcing mesh 2, arc-shaped prestressed tendons 5 and connectors and the like can be poured into the concrete, a large-area prestressed laminated plate structure is formed at last, the area of a single laminated plate is increased by more than two times compared with that of a traditional laminated plate, the bearing capacity and the compression resistance are greatly improved, and the situation that cracks and cracks appear after load bearing can be avoided.

The above is a detailed description of the present application with reference to specific embodiments, and the specific embodiments of the present application should not be considered limited to the description, and simple substitutions made by those skilled in the art without departing from the spirit of the present application should be considered as falling within the protection scope of the present application.

Claims

1. The utility model provides a large tracts of land prestressing force superimposed sheet structure, includes lower floor's reinforcing bar net (1), its characterized in that: the upper portion of lower floor's reinforcing bar net (1) is provided with upper reinforcing bar net (2), and one side of lower floor's reinforcing bar net (1) is fixed and is provided with left anchoring seat (3), and the opposite side of lower floor's reinforcing bar net (1) is fixed and is provided with right anchoring seat (4), is fixed with arc prestressing tendons (5) that upwards arch between left anchoring seat (3) and right anchoring seat (4), perhaps the both ends of arc prestressing tendons (5) are fixed mutually through connecting piece and left anchoring seat (3) and right anchoring seat (4) respectively.

2. The large area pre-stressed laminated panel structure of claim 1, wherein: the lower layer reinforcing mesh (1) and the upper layer reinforcing mesh (2) are respectively formed by fixing criss-cross reinforcing steel bars, and the lower layer reinforcing mesh (1) and the upper layer reinforcing mesh (2) are fixedly connected through a plurality of vertical reinforcing steel bars.

3. The large area pre-stressed laminated panel structure of claim 1, wherein: the left anchoring seat (3) and the right anchoring seat (4) are steel structural members with steel bar fixing slotted holes or notches, and the left anchoring seat (3) and the right anchoring seat (4) are in a single shape or a strip shape and are welded or anchored on the lower layer of steel bar mesh (1).

4. The large area pre-stressed laminated panel structure of claim 1, wherein: the connecting piece includes connecting block (6), first dead lever (7) and second dead lever (8), and the both ends of arc prestressing tendons (5) are fixed with connecting block (6) respectively, are fixed mutually with the one end of first dead lever (7) and second dead lever (8) on connecting block (6) respectively, and first dead lever (7) and second dead lever (8) are the V type and distribute, and the other end of first dead lever (7) and second dead lever (8) is fixed respectively on left anchor seat (3) or right anchor seat (4).

5. The large area pre-stressed laminated panel structure of claim 1, wherein: the connecting piece includes connecting block (6) and arc dead lever (9), and the both ends of arc prestressing tendons (5) are fixed with connecting block (6) respectively to connecting block (6) are fixed at the middle part of arc dead lever (9), and the both ends of arc dead lever (9) are fixed respectively on left anchor seat (3) or right anchor seat (4).

6. The large area pre-stressed laminated panel structure of claim 1, wherein: the arc-shaped prestressed tendons (5) adopt steel bars in an elastic deformation state, the length of the arc-shaped prestressed tendons (5) is larger than the linear distance between the installation parts of the left anchoring seat (3) and the right anchoring seat (4), and the height of the arc surfaces of the arc-shaped prestressed tendons (5) is smaller than or equal to the distance between the lower-layer steel bar net (1) and the upper-layer steel bar net (2).

7. The large area pre-stressed laminated panel structure of claim 1, wherein: and a concrete pouring area (11) is arranged between the lower layer reinforcing mesh (1) and the upper layer reinforcing mesh (2) and in the surrounding area.