CN210238896U - Concrete superimposed sheet construction is with stabilizing connection structure - Google Patents
Concrete superimposed sheet construction is with stabilizing connection structure Download PDFInfo
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- CN210238896U CN210238896U CN201920886963.4U CN201920886963U CN210238896U CN 210238896 U CN210238896 U CN 210238896U CN 201920886963 U CN201920886963 U CN 201920886963U CN 210238896 U CN210238896 U CN 210238896U
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Abstract
The utility model relates to a stable connection structure for concrete laminated slab construction, which comprises a prestressed thin slab, a plurality of precast concrete reinforcing blocks, a straight connecting rod and a plurality of bent connecting rods; the plurality of precast concrete reinforcing blocks are arranged at the positions, aligned with the plurality of bolt holes on the prestressed thin plate one by one, of the upper end of the prestressed thin plate, a bent connecting rod is arranged above each two corresponding precast concrete reinforcing blocks along the transverse direction, and the straight connecting rod is longitudinally arranged below the upper protruding position in the middle of the plurality of bent connecting rods; the end part of the bent connecting rod, the prestressed concrete reinforcing block and the prestressed thin plate are integrally fixed through a first connecting bolt which penetrates from bottom to top; the straight connecting rod is fixedly connected with the bent connecting rods through second connecting bolts penetrating from bottom to top. The stable connection structure can bear larger construction load, provides enough large space for laying reinforcing steel bars and equipment pipelines, and improves the construction convenience of pouring of the post-cast concrete laminated layer.
Description
Technical Field
The utility model belongs to the building structure field relates to concrete composite slab's construction technology, concretely relates to concrete composite slab is under construction with stabilizing connection structure.
Background
The concrete laminated slab is a better structural form of combining a precast slab and a post-cast concrete laminated layer. The precast slabs and the upper post-cast concrete superposed layer are combined into a whole to bear load together. The prefabricated slab is used as a bottom die of the post-cast concrete laminated layer, so that the support of the template can be reduced; compared with a cast-in-place slab, the concrete laminated slab saves templates and temporary supports, is convenient to construct and install and shortens the construction period; compared with prefabricated slabs, the concrete laminated slab has better shock resistance and integrity.
At present, with the rapid development of building industrialization in China, concrete composite slabs are in a vigorous development period, and concrete composite slabs are mainly divided into two forms, namely reinforced truss concrete composite slabs and PK prestressed concrete composite slabs, and the concrete composite slabs are characterized in that:
(1) the steel bar truss concrete composite slab adopts steel bar truss concrete precast slabs, the steel bar truss concrete precast slabs can obviously increase the rigidity and the bearing capacity of the concrete composite slab before superposition, and the steel bar truss with good design can meet the strength and the rigidity required before superposition; the steel bar truss supports the framework, and the integrity is better. However, the manufacturing process of the reinforced truss concrete precast slab is relatively complex, and more on-site floor slab temporary supports are needed; due to the complex truss steel bars, the equipment pipelines are inconvenient to lay; the steel quantity used by the steel bar truss concrete precast slab is large, and the manufacturing cost is high.
(2) The PK prestressed concrete laminated slab adopts the ribbed prestressed precast slab, the ribbed prestressed precast slab can bear larger construction load, the templates and supports are reduced, the strip-shaped holes are reserved on the ribs, steel bars and equipment pipelines can be penetrated in the holes to form a bidirectional reinforced floor slab, and broken line steel bars are arranged at the joints of the ribbed prestressed precast slab, so that the crack resistance of the floor slab is improved; due to the arrangement of the plate ribs, the ribbed prestressed precast slab is not easy to break in the transportation and construction processes, and the prestress reverse arch value can be effectively controlled. The ribbed prestressed precast slab is a pre-tensioning process, prestressed relaxation is carried out after the ribbed prestressed precast slab concrete reaches 75% of design strength, the bottom of the slab is still prestressed and inverted arched, and out-of-plane deformation of the ribbed prestressed precast slab can be caused; double T-shaped section ribs and double rectangular section ribs, and the rib holes are inconvenient to penetrate through the steel bars.
The patent application numbers are: 201910083969.2, entitled prestressed concrete composite slab and construction method thereof, discloses a prestressed concrete composite slab structure with a novel structure and a construction method thereof, wherein the prestressed concrete composite slab has better flatness, enough pipeline laying space is arranged in the composite slab, the pipeline is convenient to lay, and the protective layer of the pipeline can reach enough thickness. The patent material discloses a temporary stable structure formed by connecting a prestressed thin plate, a plurality of concrete reinforcing blocks and 2 steel pipes through bolts, the temporary stable structure plays a key role in leveling the prestressed thin plate and bearing construction load, the temporary stable structure needs to be further improved and improved in the aspects of strengthening construction bearing capacity and strengthening construction stability, and in addition, the temporary stable structure also needs to be further improved in the aspect of pouring convenience of a post-poured concrete laminated layer.
Through the search of the prior art, the technical scheme similar to the patent is not searched.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a stable connecting structure for the construction of a concrete composite slab, which can bear larger construction load and can reduce or even completely cancel temporary support during construction; the stable connection structure can realize the out-of-plane deformation leveling of the prestressed thin plate, thereby ensuring the flatness of the prestressed thin plate; the stable connection structure can provide enough space for laying steel bars and equipment pipelines, so that the construction efficiency can be improved; this stabilize connection structure can improve the construction convenience of pouring of post-cast concrete superimposed sheet, does benefit to and improves the efficiency of construction.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a concrete composite slab construction is with stabilizing connection structure which characterized in that: the device comprises a prestressed thin plate, a plurality of precast concrete reinforcing blocks, a straight connecting rod and a plurality of bent connecting rods, wherein the middle parts of the bent connecting rods are convex upwards;
a plurality of groups of bolt holes are uniformly distributed on the prestressed thin plate along the longitudinal direction, and each group of bolt holes consists of two bolt holes close to two sides of the prestressed thin plate; a bolt hole is formed in the center of the precast concrete reinforcing block, a plurality of bolt holes are formed in the straight connecting rod along the rod length direction, and bolt holes are formed in the protruding positions of the two ends and the middle of the bent connecting rod;
the precast concrete reinforcing blocks are arranged at the positions, one-to-one, of the upper end of the prestressed thin plate and the bolt holes in the prestressed thin plate; a bent connecting rod is arranged above every two corresponding precast concrete reinforcing blocks along the transverse direction of the prestressed thin plate; the straight connecting rod is longitudinally arranged below the raised positions on the middle parts of the plurality of bent connecting rods; the end part of the bent connecting rod, the prestressed concrete reinforcing block and the prestressed thin plate are fixedly connected into a whole through first connecting bolts penetrating from bottom to top, a gasket is arranged between the lower end of the prestressed thin plate and the upper end of the bolt head of each first connecting bolt, and a first upper nut and a first lower nut are respectively connected to each first connecting bolt above and below the end part of the bent connecting rod; the straight connecting rod is fixedly connected with the bent connecting rods through second connecting bolts penetrating from bottom to top, and a second upper nut is connected to each second bolt above the bent connecting rods.
And two hanging rings are welded at the upper end of the straight connecting rod along the length direction of the rod.
The utility model has the advantages and positive effect:
1. this concrete superimposed sheet construction leaves enough big space with stable connection structure between precast concrete boss to make things convenient for laying of follow-up reinforcing bar and equipment pipeline, improved the efficiency of construction.
2. Compared with the prior patent application scheme, the transverse connection is added above the precast concrete reinforcing block, so that the integrity, the stability and the rigidity of the stable connection structure are further improved, larger construction load can be borne, and temporary support can be reduced or even completely cancelled during construction; in addition, the overall height of the stable connection structure is increased, so that the pouring operation space inside the stable connection structure is increased, the subsequent pouring construction of a post-poured concrete superposed layer is facilitated, and the pouring construction efficiency is improved; in addition, in the hoisting and construction process, the stable connecting structure can also prevent the prestressed thin plate from being broken and damaged.
3. This concrete superimposed sheet construction is compared in earlier patent application scheme with stable connection structure, and the precast concrete boss passes through bolted connection with the prestressing force sheet metal, compares in the pouring connection of earlier application, has improved the efficiency of construction.
4. This stable connection structure is used in concrete composite slab construction connects into a whole with prestressing force sheet metal, precast concrete boss, straight connecting rod and curved connecting rod through a plurality of bolts, puts the back at the prestressing force sheet metal, under the condition that out-of-plane warp appears, through the cooperation regulation of nut, can realize the out-of-plane deformation leveling of prestressing force sheet metal to can guarantee the roughness of prestressing force sheet metal.
Drawings
FIG. 1 is a perspective view of the present invention in use (only a portion of the post-cast concrete composite layer is shown);
FIG. 2 is a schematic bottom plan view of FIG. 1;
FIG. 3 is a right side elevational schematic plan view of FIG. 1;
FIG. 4 is a schematic left side plan view of FIG. 1;
FIG. 5 is a schematic view of the connection between the prestressed thin slab and the precast concrete reinforcing block of the present invention;
FIG. 6 is an exploded perspective view of FIG. 5 (omitting the first connecting bolt);
fig. 7 is a schematic structural view of the bent connecting rod of the present invention;
fig. 8 is a schematic structural view of the straight connecting rod of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention should not be limited thereto.
A stable connection structure for concrete composite slab construction is disclosed, please refer to fig. 1-8, and its invention points are:
comprises a prestressed thin plate 2, a plurality of precast concrete reinforcing blocks 7, a straight connecting rod 4 and a plurality of bent connecting rods 6 with the middle parts being convex upwards.
A plurality of groups of bolt holes are uniformly distributed in the longitudinal direction on the prestressed thin plate, and each group of bolt holes is composed of two bolt holes close to two sides of the prestressed thin plate. A bolt hole is formed in the center of the precast concrete reinforcing block. A plurality of bolt holes are arranged on the straight connecting rod along the length direction of the rod. Bolt holes are arranged at the two ends and the middle part of the bent connecting rod at the raised positions. The hole diameters of the bolt holes in the prestressed thin plate, the bolt holes in the precast concrete reinforcing block and the bolt holes at two ends of the bent connecting rod are consistent, and the hole distances of the two bolt holes aligned in the transverse direction in the prestressed thin plate are consistent with the hole distances of the bolt holes at two ends of the bent connecting rod.
The precast concrete reinforcing blocks are arranged at the positions, one by one, of the upper end of the prestressed thin plate and the bolt holes in the prestressed thin plate. And a bent connecting rod is arranged above every two corresponding precast concrete reinforcing blocks along the transverse direction of the prestressed thin plate, and the straight connecting rod is longitudinally arranged below the raised positions on the middle parts of the bent connecting rods. The end part of the bent connecting rod, the prestressed concrete reinforcing block and the prestressed thin plate are fixedly connected into a whole through a first connecting bolt 10 which penetrates from bottom to top, a gasket 11 is arranged between the lower end of the prestressed thin plate and the upper end of the bolt head of each first connecting bolt, and a first upper nut 12 and a first lower nut 13 are respectively connected above and below the end part of the bent connecting rod on each first connecting bolt. The straight connecting rod is fixedly connected with the bent connecting rods through second connecting bolts 9 penetrating from bottom to top, and a second upper nut 14 is connected to each second bolt above the bent connecting rods.
In the structure, two lifting rings 8 are welded at the upper end of the straight connecting rod along the rod length direction, so that the stable connecting structure is lifted to a set construction position through lifting equipment at a construction site.
The construction method of the concrete composite slab by adopting the stable connection structure for the construction of the concrete composite slab comprises the following steps:
s1 manufacturing a prestressed thin slab, a precast concrete reinforcing block, a straight link and a bent link in a factory.
S2, connecting the prestressed thin plate and the precast concrete reinforcing blocks together through a first connecting bolt, a first lower nut and a gasket in a factory to form a first connecting split body, and connecting the bent connecting rod and the straight connecting rod together through a second connecting bolt and a second upper nut to form a second connecting split body;
s3, after the connection of S2 is completed, bolt holes at the ends of a plurality of bent connecting rods of the second connection split body are matched with the upper ends of a plurality of first connecting bolts in a one-to-one penetrating mode, first upper nuts are locked on the first connecting bolts above the ends of the bent connecting rods, and the first connection split body and the second connection split body are connected together to form the stable connection structure for the construction of the concrete composite slab;
s4, leveling the prestressed thin plate of the stable connection structure for the concrete laminated slab construction;
after the prestressed sheet is put under tension, two situations can occur: 1. the prestressed thin plate has no out-of-plane deformation; 2. the out-of-plane deformation occurs at a certain position of the prestressed thin plate; corresponding to the first situation, the concrete composite slab can be transported to a construction site after being connected by the stable connection structure for construction, corresponding to the second situation, the out-of-plane deformation and leveling of the prestressed thin slab is needed, the prestressed thin slab is bent and deformed downwards at a certain position, in the process of connecting the second connection split body and the first connection split body, the bent connecting rod at the position is found not to be completely attached to the first lower nut, the first upper nuts except the position are screwed, the first upper nuts are screwed, and when all the first upper nuts are on the horizontal plane, the prestressed thin slab is relatively flat; when the prestressed thin plate is bent upwards at a certain position, and the second connecting split body is connected with the first connecting split body, only the bent connecting rod at the position is completely attached to the first lower nut, namely the first upper nut at the position is screwed down, then the first upper nuts at other positions are screwed down, and when all the first upper nuts are on a horizontal plane, the prestressed thin plate is relatively flat;
s5, the stabilized connection structure for the concrete composite slab construction after leveling treatment is conveyed to a construction site and lifted to a construction position through hoisting equipment, and transverse steel bars 3, longitudinal steel bars 5 and equipment pipelines are laid in the space between the precast concrete reinforcing blocks above the prestressed thin plate at the construction station, wherein the equipment pipelines are not shown in the drawing.
S6, after the pavement is finished and the design requirements are met through inspection, pouring of the post-cast concrete laminated layer 1 is carried out on the upper end of the prestressed thin plate;
s7 after the post-cast concrete laminated layer meets the design strength requirement, unscrewing all the first upper nuts, taking away the second connection split body, unscrewing all the first lower nuts, taking away a plurality of first connecting bolts and gaskets, filling bolt holes in the prestressed thin plate and bolt holes in the precast concrete block reinforcing blocks, and manufacturing the concrete laminated slab.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (2)
1. The utility model provides a concrete composite slab construction is with stabilizing connection structure which characterized in that: the device comprises a prestressed thin plate, a plurality of precast concrete reinforcing blocks, a straight connecting rod and a plurality of bent connecting rods, wherein the middle parts of the bent connecting rods are convex upwards;
a plurality of groups of bolt holes are uniformly distributed on the prestressed thin plate along the longitudinal direction, and each group of bolt holes consists of two bolt holes close to two sides of the prestressed thin plate; a bolt hole is formed in the center of the precast concrete reinforcing block, a plurality of bolt holes are formed in the straight connecting rod along the rod length direction, and bolt holes are formed in the protruding positions of the two ends and the middle of the bent connecting rod;
the precast concrete reinforcing blocks are arranged at the positions, one-to-one, of the upper end of the prestressed thin plate and the bolt holes in the prestressed thin plate; a bent connecting rod is arranged above every two corresponding precast concrete reinforcing blocks along the transverse direction of the prestressed thin plate; the straight connecting rod is longitudinally arranged below the raised positions on the middle parts of the plurality of bent connecting rods; the end part of the bent connecting rod, the prestressed concrete reinforcing block and the prestressed thin plate are fixedly connected into a whole through first connecting bolts penetrating from bottom to top, a gasket is arranged between the lower end of the prestressed thin plate and the upper end of the bolt head of each first connecting bolt, and a first upper nut and a first lower nut are respectively connected to each first connecting bolt above and below the end part of the bent connecting rod; the straight connecting rod is fixedly connected with the bent connecting rods through second connecting bolts penetrating from bottom to top, and a second upper nut is connected to each second bolt above the bent connecting rods.
2. The stable connection structure for concrete composite slab construction according to claim 1, characterized in that: two hanging rings are welded at the upper end of the straight connecting rod along the length direction of the rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920886963.4U CN210238896U (en) | 2019-06-13 | 2019-06-13 | Concrete superimposed sheet construction is with stabilizing connection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920886963.4U CN210238896U (en) | 2019-06-13 | 2019-06-13 | Concrete superimposed sheet construction is with stabilizing connection structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185182A (en) * | 2019-06-13 | 2019-08-30 | 天津城建大学 | Concrete folding plate construction is with being stably connected with structure and construction method |
| CN113027025A (en) * | 2021-03-22 | 2021-06-25 | 浙江宏超建设集团有限公司 | Assembled floor structure |
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2019
- 2019-06-13 CN CN201920886963.4U patent/CN210238896U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185182A (en) * | 2019-06-13 | 2019-08-30 | 天津城建大学 | Concrete folding plate construction is with being stably connected with structure and construction method |
| CN113027025A (en) * | 2021-03-22 | 2021-06-25 | 浙江宏超建设集团有限公司 | Assembled floor structure |
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