CN212248837U - Bidirectional hollow composite floor slab, slab joint structure and connection structure with frame beam column - Google Patents
Bidirectional hollow composite floor slab, slab joint structure and connection structure with frame beam column Download PDFInfo
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- CN212248837U CN212248837U CN202020160397.1U CN202020160397U CN212248837U CN 212248837 U CN212248837 U CN 212248837U CN 202020160397 U CN202020160397 U CN 202020160397U CN 212248837 U CN212248837 U CN 212248837U
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Abstract
The utility model discloses a bidirectional hollow composite floor slab, wherein prestressed tendons are pre-embedded in the longitudinal direction of a prefabricated bottom plate, distributed tendons are pre-embedded in the transverse direction of the prefabricated bottom plate, a plurality of split heads in rows are pre-embedded in the longitudinal two sides of the prefabricated bottom plate, the bottom sides of the split heads are anchored in the prefabricated bottom plate, and the top sides of the split heads extend out of the prefabricated bottom plate and are anchored in a cast-in-situ layer; be provided with between two lines of split heads muscle along a plurality of stirrups group that transverse interval arranged, a plurality of stirrups group all includes a plurality of stirrups that arrange in line, and the one end of a plurality of stirrups is all pre-buried in prefabricated bottom plate, the other end all anchors in cast-in-place layer, and prefabricated bottom plate top side surface between two arbitrary adjacent stirrups groups all sets up a plurality of weight reducing blocks. The utility model also discloses a slab joint structure of the bidirectional hollow composite floor slab and a connecting structure of the bidirectional hollow composite floor slab and the frame beam column, a close splicing is formed between the two floor slabs, and a bottom die is not required to be erected at the bottom side; the two-way hollow composite floor slab and the columns form a close-spliced beam, so that the two-way stress of the floor slab is the same.
Description
Technical Field
The utility model belongs to the technical field of the assembly type structure, specifically speaking, the utility model relates to a two-way hollow coincide floor, board seam structure and with the joint construction of frame beam column.
Background
The common bidirectional stress hollow floor slab at present generally has some problems: the first and the second full cast-in-place ribbed hollow floor slab has large engineering quantity, complex operation, high cost and longer construction period, and needs a large amount of woodworkers and technical workers on site; secondly, the quality problems of incompact lower part, holes and the like of the hollow floor slab are easily caused by pouring concrete on site.
In the regulation of the two-way floor slab side structure in the technical specification of the prefabricated concrete structure, the steel bars on the prefabricated floor slab side are extended out from the side and bent, a cast-in-place section is reserved between two floor slabs, so that the steel bars on the floor slab side are mutually anchored, the bending moment can be transferred to the slab side structure after the cast-in-place is completed, and the floor slab can be calculated according to the two-way floor slab. However, the reinforcing steel bars need to extend out of the floor slab side, grooves need to be formed in the side die during production, production cost is high, production operation is inconvenient, and particularly when a long-line pedestal is adopted for production, the grooves need to be formed in the side die, the side die cannot be detached, so that the floor slab is difficult to demould, and production cannot be achieved. And a cast-in-place section needs to be reserved during cast-in-place on site, and a bottom die needs to be additionally erected on the cast-in-place section, so that the support modulus of the cast-in-place construction is large, and the assembly construction difficulty is increased.
In summary, it is desirable to provide a bidirectional hollow composite floor slab to solve the technical problems of inconvenient production and need of supporting a bottom formwork on a cast-in-place section during cast-in-place of the prior art caused by the fact that reinforcing steel bars extend out of the side edge of the bidirectional hollow floor slab; still need provide the plate joint structure of a coincide floor and the connection structure of coincide floor and frame beam column simultaneously to the atress performance of plate joint structure is more weak among the solution prior art, and the connection between coincide floor and the frame beam column needs to prop up technical problem such as establish a large amount of moulds.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the bidirectional hollow composite floor slab is provided, and the technical problems that in the prior art, the production is inconvenient because reinforcing steel bars extend out of the side edge of the bidirectional hollow floor slab, and a bottom die needs to be erected on a cast-in-place section during cast-in-place are solved; still provide the slab joint structure of coincide floor and the connection structure of coincide floor and frame beam column to the atress performance of slab joint structure is less strong among the solution prior art, and the connection between coincide floor and the frame beam column needs to prop up technical problem such as establishing a large amount of moulds.
In order to realize the purpose, the utility model discloses the technical scheme who takes does:
a bidirectional hollow composite floor slab comprises a cast-in-place layer on the top side and a prefabricated bottom plate on the bottom side, wherein prestressed ribs are pre-embedded in the longitudinal direction of the prefabricated bottom plate, distribution ribs are pre-embedded in the transverse direction of the prefabricated bottom plate, a plurality of split heads in rows are pre-embedded in the two longitudinal sides of the prefabricated bottom plate, the bottom sides of the split heads are anchored in the prefabricated bottom plate, and the top sides of the split heads extend out of the prefabricated bottom plate and are anchored in the cast-in-place layer; two lines be provided with between the split heads muscle along a plurality of stirrup groups that transverse interval arranged, it is a plurality of stirrup group all includes a plurality of stirrups of arranging in line, and is a plurality of the one end of stirrup all pre-buried in the prefabricated bottom plate, the other end all anchors in the cast-in-place layer, arbitrary adjacent two between the stirrup group the top side of prefabricated bottom plate all sets up a plurality of weight reducing blocks on the surface.
In a more preferred embodiment, the connecting direction of the plurality of stirrups arranged in a row is parallel to the length direction of the distribution rib, and the connecting direction of the plurality of split heads arranged in a row is parallel to the length direction of the prestressed tendon.
In a more preferred embodiment, the weight reducing body is arranged between every two adjacent stirrups along the length direction of the prestressed tendons.
In a more preferred embodiment, the split heads include a middle protruding portion and two end embedded portions, the embedded portions are anchored in the prefabricated base plate, and the protruding portion protrudes out of the prefabricated base plate and is anchored in the cast-in-place layer. The anchoring part is arranged, so that the split heads can be stably placed and fixed on the die table when the prefabricated bottom plate is produced.
In a more preferred embodiment, the distribution rib is disposed in the concrete of the prefabricated bottom plate above the embedded portion, and the prestressed reinforcement is embedded in the concrete of the prefabricated bottom plate between the distribution rib and the embedded portion.
In a more preferred embodiment, the weight-reducing block bottom is fixed to the distribution rib. The weight reducing blocks can be fixed on the distribution ribs through structures such as steel wires, and therefore the weight reducing blocks are prevented from floating upwards when cast-in-place layer concrete is poured.
In a more preferred embodiment, the weight reducing block is made of EPS material. Polystyrene foam (EPS for short) is a light high polymer, is foam plastic with a hard closed-cell structure, is easy to obtain materials, has light weight and good heat insulation performance. Thus, the heat insulation effect is achieved besides the effect of weight reduction.
In a more preferred embodiment, the plane of the stirrup is parallel to the length direction of the prestressed tendon, and the plane of the split heads is parallel to the length direction of the distribution tendon.
The utility model also discloses a slab joint structure of two-way hollow coincide floor, including the prefabricated bottom plate of two adjacent close piece-built of vertical both sides, the vertical pre-buried prestressing tendons of prefabricated bottom plate, the horizontal pre-buried distribution muscle that has, the vertical both sides of prefabricated bottom plate all pre-buried in having many split heads muscle in the same row, the bottom side of many split heads muscle all anchors in the prefabricated bottom plate, and the top side of many split heads muscle stretches out in the prefabricated bottom plate; a plurality of stirrup groups which are arranged at intervals along the transverse direction are arranged between two rows of the split heads, each stirrup group comprises a plurality of stirrups which are arranged in a row, one ends of the stirrups are embedded in the prefabricated bottom plate, the other ends of the stirrups are exposed out of the prefabricated bottom plate, and a plurality of weight reducing blocks are arranged on the top side surface of the prefabricated bottom plate between any two adjacent stirrup groups; still include additional stirrup and vertical reinforcing bar, every the additional stirrup simultaneously with two the split heads muscle of prefabricated bottom plate is connected, the inside four corners of additional stirrup all is provided with vertical reinforcing bar, two be provided with between the split heads muscle of prefabricated bottom plate vertical reinforcing bar.
In a more preferred embodiment, the slab joint structure of the bidirectional hollow composite floor slab further comprises a cast-in-place layer, and the cast-in-place layer is poured on the top sides of the two prefabricated bottom plates and is integrally connected with the two prefabricated bottom plates. Therefore, the two prefabricated bottom plates are connected together through the cast-in-place layer concrete, and the two-way stress of the floor slab is the same.
In a more preferred embodiment, the diameter of the additional stirrups is not less than the diameter of the pre-stressed tendons embedded in the prefabricated floor.
The utility model also provides a connection structure of two-way hollow coincide floor and frame beam column, including cast-in-place post, cast-in-place hidden beam and two piece at least foretell two-way hollow coincide floor, two the tip of prefabricated bottom plate is shelved respectively the both ends on cast-in-place post top side, cast-in-place hidden beam is including two roof beam stirrup and roof beam longitudinal bar placed between the piece of subtracting of the tip of prefabricated bottom plate and two cast-in-place concrete between the piece of subtracting of the tip of prefabricated bottom plate, two-way hollow coincide floor with cast-in-place post passes through two the concrete on the cast-in-place layer of prefabricated bottom plate top side with the concrete on the cast-in-place layer of cast-in-place post top side links together.
In a more preferred embodiment, the beam stirrups are annular, and the beam stirrups include a first beam stirrup, a second beam stirrup, and a third beam stirrup; two are arranged respectively in the both ends of first roof beam stirrup the top side surface of prefabricated bottom plate and respectively with prefabricated bottom plate tip anchor's stirrup or split heads muscle are connected, the second roof beam stirrup with the third roof beam stirrup is all arranged in the top side of cast-in-place post, just the width of third roof beam stirrup is less than the width of second roof beam stirrup, all be provided with inside the four corners of first roof beam stirrup, second roof beam stirrup and third roof beam stirrup the roof beam is indulged the muscle.
The technical scheme of the utility model the beneficial technological effect who gains is:
1. the bidirectional hollow composite floor slab of the utility model reduces the whole weight of the bidirectional hollow composite floor slab by arranging the weight reducing block; by arranging the stirrups, the connection performance between the cast-in-place layer and the prefabricated bottom plate is improved.
2. The plate seam structure of the bidirectional hollow composite floor slab in the utility model has the advantages that the joint seams of two floor slabs are closely spliced, and a bottom die is not required to be erected at the bottom side, so that the construction efficiency is improved; a close-spliced beam is formed between the spliced seams of the two floor slabs, so that the connection performance of the prestressed hollow slab is enhanced; the close-spliced beam adds the prestressed floor slab, and the two-way stress of the floor slab is the same.
3. The utility model discloses a connection structure of two-way hollow coincide floor and frame beam column, two prefabricated bottom plate concatenation departments have formed the secret hidden beam structure of piecing together, and cast-in-place layer concrete links together two prefabricated bottom plates, realizes the board post hidden beam structure that the bottom is flat entirely, and the structure is reliable, and coincide floor bottom need not to prop up on a large scale and establishes the die block, improves the efficiency of construction.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
Fig. 1 is a schematic structural view of a bidirectional hollow composite floor slab (hidden cast-in-place layer) in example 1;
FIG. 2 is a cross-sectional view of FIG. 1 in the direction 1-1;
FIG. 3 is a cross-sectional view taken in the direction 2-2 of FIG. 1;
fig. 4 is a schematic view of a seam construction of a bidirectional hollow composite floor slab in embodiment 2 (hiding a cast-in-place layer);
FIG. 5 is a cross-sectional view taken in the direction 1-1 of FIG. 4;
FIG. 6 is a cross-sectional view taken in the direction 2-2 of FIG. 4;
fig. 7 is a sectional view (tendon direction) of a connection structure of a bidirectional hollow composite floor slab and a frame beam column in embodiment 3;
fig. 8 is a schematic diagram showing the relationship between the beam stirrup and the stirrup of the bidirectional hollow composite floor slab in fig. 7.
Reference numerals:
1-cast-in-situ layer 2-prefabricated bottom plate 3-prestressed tendon
4-distributed ribs 5-split heads ribs 6-weight reducing blocks
7-stirrup 8-boss 9-embedded part
10-additional stirrup 11-longitudinal steel bar 12-cast-in-situ column
13-cast-in-place hidden beam 14-beam stirrup 15-beam longitudinal bar
16-first beam stirrup 17-second beam stirrup 18-third beam stirrup
Detailed Description
The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
Example 1
Referring to the attached drawing 1, the bidirectional hollow composite floor slab in the embodiment includes a cast-in-place layer 1 on the top side and a prefabricated bottom plate 2 on the bottom side, pre-buried with prestressed tendons 3 in the longitudinal direction of the prefabricated bottom plate 2 and pre-buried with distribution tendons 4 in the transverse direction, pre-buried with a plurality of split heads bars 5 in rows on both sides of the prefabricated bottom plate 2 in the longitudinal direction, anchored in the prefabricated bottom plate 2 at the bottom sides of the split heads 5, and anchored in the cast-in-place layer 1 with the top sides of the split heads 5 extending out of the prefabricated bottom plate 2; be provided with between two lines of split heads muscle 5 and organize along a plurality of stirrups that transverse interval arranged, a plurality of stirrups are organized and are all including a plurality of stirrups 7 that arrange in line, and the one end of a plurality of stirrups 7 is all pre-buried in prefabricated bottom plate 2, the other end all anchors in cast-in-place layer 1, and the top side of prefabricated bottom plate 2 between two arbitrary adjacent stirrups groups all sets up a plurality of weight reducing blocks 6 on the surface. In this embodiment, the connecting line direction of the plurality of stirrups 7 arranged in rows is parallel to the length direction of the distribution rib 4, and the connecting line direction of the plurality of split heads 5 arranged in rows is parallel to the length direction of the prestressed rib 3. The prefabricated bottom plate 2 is produced in a factory, the bottoms of the split heads 5 and the stirrups 7 are anchored in concrete of the prefabricated bottom plate 2 during production, then the prefabricated bottom plate 2 is transported to a construction site, concrete is poured on the top side of the prefabricated bottom plate 2, and the cast-in-place layer 1 is formed after maintenance, so that the lower portions of the split heads 5 and the stirrups 7 are anchored in the concrete of the prefabricated bottom plate 2, and the upper portions of the split heads 5 and the stirrups 7 are anchored in the concrete of the cast-in-place layer 1. The weight reducing block 6 is arranged, so that the overall weight of the bidirectional hollow composite floor slab is reduced; by arranging the stirrups 7 and the split heads 5, the connection performance between the cast-in-place layer 1 and the prefabricated bottom plate 2 is improved.
In another improved embodiment, the bottom of the weight reducing block 6 is fixed with the distribution rib 4, specifically, the weight reducing block 6 can be fixed on the distribution rib 4 by adopting structures such as steel wire binding or welding or connecting pieces, and the like, so that the weight reducing block 6 is prevented from floating upwards when the concrete of the cast-in-place layer 1 is poured.
In another improved embodiment, the weight reducing body 6 is arranged between every two adjacent stirrups 7 along the length direction of the prestressed tendon 3. Referring to fig. 2 and fig. 3, as a modification of this embodiment, in another modified embodiment, the plane of the stirrup 7 is parallel to the tendon 3, and the plane of the split heads 5 is parallel to the distribution ribs 4. I.e. the planes of the stirrup 7 and the stirrup 5 are perpendicular to each other.
Referring to fig. 1 and 3, as a modification of the present embodiment, in another modified embodiment, stirrups 7 are provided at both ends of each weight reduction body 6. I.e. the number of stirrups 7 is greater than the number of weight-reducing blocks 6. Therefore, the weight of the whole floor slab is reduced, and the connection reliability between the precast bottom plate 2 and the concrete of the cast-in-place layer 1 is ensured.
Referring to fig. 2, the split heads 5 of the present embodiment include a middle protruding portion 8 and two embedded portions 9, and the embedded portions 9 are anchored in the prefabricated base plate 2 and extend out of the surface of the prefabricated base plate 2. Set up anchor portion, split heads muscle 5 is put and is fixed on the mould platform steadily when realizing 2 productions of prefabricated bottom plate.
Referring to fig. 2, as a modification of the present embodiment, in another modified embodiment, the distribution rib 4 is disposed in the concrete of the prefabricated floor panel 2 above the embedded part 9, and the prestressed tendons 3 are embedded in the concrete of the prefabricated floor panel 2 between the distribution rib 4 and the embedded part 9. As can be seen from the attached figure 2, the prestressed reinforcement 3 is also arranged at the position between the anchoring part of the split heads reinforcement 5 and the distribution reinforcement 4, so that the connectivity between the split heads reinforcement 5 and the distribution reinforcement 4 and the split heads reinforcement 5 is enhanced, and the anchoring force between the split heads reinforcement 5 and the concrete of the prefabricated bottom plate 2 is improved.
With continued reference to fig. 1, as a modification of the present embodiment, in another modified embodiment, the weight-reducing blocks 6 are made of EPS material. Polystyrene foam (EPS for short) is a light high polymer, is foam plastic with a hard closed-cell structure, is easy to obtain materials, has light weight and good heat insulation performance. Therefore, the heat insulation floor not only has the function of reducing the weight of the floor, but also has the function of heat insulation.
Example 2
Referring to fig. 4 to 6, the slab joint structure of the bidirectional hollow composite floor slab in the embodiment includes two prefabricated bottom plates 2 adjacently and densely spliced at two longitudinal sides, pre-stressed tendons 3 are pre-embedded in the longitudinal direction of the prefabricated bottom plates 2, distribution tendons 4 are pre-embedded in the transverse direction of the prefabricated bottom plates 2, a plurality of lined split heads 5 are pre-embedded at two longitudinal sides of the prefabricated bottom plates 2, bottom sides of the split heads 5 are anchored in the prefabricated bottom plates 2, and top sides of the split heads 5 extend out of the prefabricated bottom plates 2; a plurality of stirrup groups which are arranged at intervals along the transverse direction are arranged between two rows of split heads 5, each stirrup group comprises a plurality of stirrups 7 which are arranged in a row, one ends of the stirrups 7 are embedded in the prefabricated base plate 2, the other ends of the stirrups 7 are exposed out of the prefabricated base plate 2, and a plurality of weight reducing blocks 6 are arranged on the top side surface of the prefabricated base plate 2 between any two adjacent stirrup groups; still include additional stirrup 10 and longitudinal reinforcement 11, every additional stirrup 10 is connected with the split heads muscle 5 of two prefabricated bottom plates 2 simultaneously, and the inside longitudinal reinforcement 11 that all is provided with in four corners of additional stirrup 10 is provided with longitudinal reinforcement 11 between the split heads muscle 5 of two prefabricated bottom plates 2. And the width of additional stirrup 10 is equal to or greater than the distance between the horizontal both ends of two adjacent split heads muscle 5 of two prefabricated bottom plate 2 tip, and longitudinal reinforcement 11 is arranged in the inside four corners of additional stirrup 10 and split head muscle 5 simultaneously. When two prefabricated bottom plates 2 are horizontally densely spliced, the split heads 5, the additional stirrups 10 and the longitudinal steel bars 11 form a steel bar framework structure of a densely spliced beam, the cast-in-place layer 1 concrete poured on the top sides of the two prefabricated bottom plates 2 is connected into a whole, the splicing part of the two prefabricated bottom plates 2 forms a densely spliced hidden beam structure, the two prefabricated bottom plates 2 are connected together by the cast-in-place layer 1 concrete, the two-way stress homogeneity of the floor slabs is realized, and the connecting strength between the floor slabs is obviously improved.
The slab joint structure of the bidirectional hollow composite floor slab of the embodiment further comprises a cast-in-place layer 1, wherein the cast-in-place layer 1 is poured on the top sides of the two prefabricated bottom plates 2 and is connected with the two prefabricated bottom plates 2 into a whole. Therefore, the two prefabricated bottom plates 2 are connected together through the concrete of the cast-in-place layer 1, and the two-way stress uniformity of the floor slab is realized.
As a modification of this embodiment, in another modified embodiment, the diameter of the additional stirrup 10 is not smaller than the diameter of the tendon 3 embedded in the prefabricated floor 2. Therefore, the strength of the joints of the floor slabs can be ensured to be not lower than that of the two superposed floor slabs, and the joints of the floor slabs are prevented from becoming weak points under stress.
Example 3
Referring to fig. 7, the connecting structure of the bidirectional hollow composite floor slab and the frame beam column in embodiment 1 includes at least two bidirectional hollow composite floor slabs, a cast-in-place column 12 and a cast-in-place hidden beam 13, wherein the end parts of the two prefabricated bottom plates 2 are respectively placed at the two end parts of the top side of the cast-in-place column 12, the cast-in-place hidden beam 13 includes a beam stirrup 14 and a beam longitudinal bar 15 which are placed between the weight reducing blocks 6 of the end parts of the two prefabricated bottom plates 2, and cast-in-place concrete which is placed between the weight reducing blocks 6 of the end parts of the two prefabricated bottom plates 2, and the cast-in-place layer 1 concrete on the top sides of the two prefabricated bottom plates 2 and the cast-in-place layer 1 concrete on the top sides of the. The diameters, the number and the placing positions of the beam stirrups 14 and the beam longitudinal bars 15 of the cast-in-place hidden beam 13 can be calculated according to the requirements of building design regulations.
As a modification of this embodiment, in another modified embodiment, the beam stirrup 14 of the cast-in-place hidden beam 13 is annular, and includes a first beam stirrup 16, a second beam stirrup 17, and a third beam stirrup 18; the top side surface of two prefabricated bottom plates 2 and the stirrup 7 or the split heads muscle 5 of being connected with prefabricated bottom plate 2 tip anchor respectively are arranged respectively in the both ends of first roof beam stirrup 16, and the top side of cast-in-place post 12 is all arranged in to second roof beam stirrup 17 and third roof beam stirrup 18, and the width of third roof beam stirrup 18 is less than the width of second roof beam stirrup 17, and first roof beam stirrup 16, second roof beam stirrup 17 and the inside roof beam longitudinal reinforcement 15 that all is provided with in four corners of third roof beam stirrup 18.
In this embodiment, the concrete poured on the top sides of the two prefabricated bottom plates 2 and the top side of the cast-in-place column 12 connects the two laminated floor slabs and the cast-in-place column 12 together, and a 1500 cm-long cast-in-place hidden beam 13 structure is formed between the weight reducing blocks 6 of the two prefabricated bottom plates 2. Through the connection structure processing of the bidirectional hollow composite floor slab and the frame hidden beam, the plate column hidden beam structure with the completely flat bottom is realized, the structure is reliable, a bottom die does not need to be erected on a large scale at the bottom of the composite floor slab, and the construction efficiency is improved.
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 (10)
1. A bidirectional hollow composite floor slab comprises a cast-in-place layer on the top side and a prefabricated bottom plate on the bottom side, and is characterized in that prestressed ribs are embedded in the longitudinal direction of the prefabricated bottom plate, distribution ribs are embedded in the transverse direction of the prefabricated bottom plate, a plurality of split heads in rows are embedded in the two longitudinal sides of the prefabricated bottom plate, the bottom sides of the split heads are anchored in the prefabricated bottom plate, and the top sides of the split heads extend out of the prefabricated bottom plate and are anchored in the cast-in-place layer; two lines be provided with between the split heads muscle along a plurality of stirrup groups that transverse interval arranged, it is a plurality of stirrup group all includes a plurality of stirrups of arranging in line, and is a plurality of the one end of stirrup all pre-buried in the prefabricated bottom plate, the other end all anchors in the cast-in-place layer, arbitrary adjacent two between the stirrup group the top side of prefabricated bottom plate all sets up a plurality of weight reducing blocks on the surface.
2. The bidirectional hollow composite floor slab of claim 1, wherein the connecting direction of the stirrups arranged in rows is parallel to the length direction of the distribution ribs, and the connecting direction of the split heads arranged in rows is parallel to the length direction of the prestressed ribs.
3. The bidirectional hollow composite floor slab of claim 2, wherein the weight reducing block is disposed between every two adjacent stirrups along the length direction of the prestressed tendons.
4. The bidirectional hollow composite floor slab as claimed in any one of claims 1 to 3, wherein the split heads include a middle protruding portion and two ends of embedded portions, the embedded portions are anchored in the prefabricated bottom slab, and the protruding portion protrudes from the prefabricated bottom slab and is anchored in the cast-in-place layer.
5. The bidirectional hollow composite floor slab of claim 4, wherein the distribution rib is disposed in the concrete of the prefabricated floor slab above the pre-buried portion, and the pre-stressed rib is pre-buried in the concrete of the prefabricated floor slab between the distribution rib and the pre-buried portion.
6. The bidirectional hollow composite floor slab of claim 5, wherein the plane of the stirrup is parallel to the length direction of the prestressed tendon, and the plane of the split heads is parallel to the length direction of the distribution tendon.
7. The slab joint structure of the bidirectional hollow composite floor slab is characterized by comprising two prefabricated bottom plates, wherein two prefabricated bottom plates are adjacently and densely spliced at two longitudinal sides of each prefabricated bottom plate, prestressed reinforcements are embedded in the longitudinal direction of each prefabricated bottom plate, distribution reinforcements are embedded in the transverse direction of each prefabricated bottom plate, a plurality of split heads in rows are embedded in the two longitudinal sides of each prefabricated bottom plate, the bottom sides of the split heads are anchored in the prefabricated bottom plates, and the top sides of the split heads extend out of the prefabricated bottom plates; a plurality of stirrup groups which are arranged at intervals along the transverse direction are arranged between two rows of the split heads, each stirrup group comprises a plurality of stirrups which are arranged in a row, one ends of the stirrups are embedded in the prefabricated bottom plate, the other ends of the stirrups are exposed out of the prefabricated bottom plate, and a plurality of weight reducing blocks are arranged on the top side surface of the prefabricated bottom plate between any two adjacent stirrup groups; still include additional stirrup and vertical reinforcing bar, every the additional stirrup simultaneously with two the split heads muscle of prefabricated bottom plate is connected, the inside four corners of additional stirrup all is provided with vertical reinforcing bar, two be provided with between the split heads muscle of prefabricated bottom plate vertical reinforcing bar.
8. The slab joint structure of the bidirectional hollow composite floor slab as claimed in claim 7, further comprising a cast-in-place layer, wherein the cast-in-place layer is cast on the top sides of the two prefabricated bottom plates and is integrally connected with the two prefabricated bottom plates.
9. A connecting structure of a bidirectional hollow composite floor slab and a frame beam column, which is characterized by comprising a cast-in-place column, a cast-in-place hidden beam and at least two bidirectional hollow composite floor slabs as claimed in any one of claims 1 to 6, wherein the end parts of the two prefabricated bottom plates are respectively arranged at the two end parts of the top side of the cast-in-place column, the cast-in-place hidden beam comprises a beam stirrup and a beam longitudinal bar which are arranged between the weight reducing blocks of the end parts of the two prefabricated bottom plates, and concrete which is cast in place between the weight reducing blocks of the end parts of the two prefabricated bottom plates, and the bidirectional hollow composite floor slab and the cast-in-place column are connected together through the concrete of the cast-in-place layer on the top side of the two prefabricated bottom plates and the concrete of the cast.
10. The structure of connecting a bidirectional hollow composite floor slab and a frame beam column as claimed in claim 9, wherein the beam stirrups are annular, and the beam stirrups include a first beam stirrup, a second beam stirrup and a third beam stirrup; two are arranged respectively in the both ends of first roof beam stirrup the top side surface of prefabricated bottom plate and respectively with prefabricated bottom plate tip anchor's stirrup or split heads muscle are connected, the second roof beam stirrup with the third roof beam stirrup is all arranged in the top side of cast-in-place post, just the width of third roof beam stirrup is less than the width of second roof beam stirrup, all be provided with inside the four corners of first roof beam stirrup, second roof beam stirrup and third roof beam stirrup the roof beam is indulged the muscle.
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| CN202020160397.1U CN212248837U (en) | 2020-02-10 | 2020-02-10 | Bidirectional hollow composite floor slab, slab joint structure and connection structure with frame beam column |
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| CN202020160397.1U CN212248837U (en) | 2020-02-10 | 2020-02-10 | Bidirectional hollow composite floor slab, slab joint structure and connection structure with frame beam column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922206A (en) * | 2021-01-30 | 2021-06-08 | 安徽建筑大学 | Coincide floor structure and concreting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922206A (en) * | 2021-01-30 | 2021-06-08 | 安徽建筑大学 | Coincide floor structure and concreting structure |
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Effective date of registration: 20211217 Address after: 5 / F, office building 2, Zhongmin zhuyou Co., Ltd., No. 10, Zhongshi Road, shaping street, Kaifu District, Changsha City, Hunan Province, 410000 Patentee after: Zhuyou Zhizao Technology Investment Co., Ltd Address before: 10 Zhongshi Road, shaping street, Kaifu District, Changsha City, Hunan Province Patentee before: Zhuyou Zhizao Technology Industry Group Co.,Ltd. |