CN216130355U - Plate seam joint of edge cast-in-situ composite floor slab and connection structure of plate seam joint and frame beam - Google Patents
Plate seam joint of edge cast-in-situ composite floor slab and connection structure of plate seam joint and frame beam Download PDFInfo
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- CN216130355U CN216130355U CN202120732544.2U CN202120732544U CN216130355U CN 216130355 U CN216130355 U CN 216130355U CN 202120732544 U CN202120732544 U CN 202120732544U CN 216130355 U CN216130355 U CN 216130355U
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- 239000002131 composite material Substances 0.000 title claims description 92
- 238000011065 in-situ storage Methods 0.000 title description 7
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 6
- 210000003205 muscle Anatomy 0.000 abstract 4
- 230000007306 turnover Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The slab joint node of cast-in-place coincide floor in edge of this scheme includes that the step form breach's coincide floor is established to two side end faces, and the step form breach of two edge coincide floors is close to be pieced together and is formed cast-in-place district, puts a plurality of solid that span slab joint in the cast-in-place district and attaches the muscle, and solid attaches the muscle including closed end and open end, and closed end and open end are all turned over to vertical direction, pour cast-in-place concrete in the cast-in-place district. The cast-in-place coincide floor slab joint in edge and frame roof beam's joint construction of this scheme, including two blocks of edge coincide floors and coincide roof beam, the coincide roof beam includes prefabricated portion and cast-in-place portion, prefabricated portion top surface is located to two blocks of edge coincide floors, the step form breach and the cast-in-place portion of two blocks of edge coincide floors form cast-in-place district, put a plurality of three-dimensional additional muscle that span cast-in-place portion in the cast-in-place district, three-dimensional additional muscle includes closed end and open end, closed end and open end all turn over to vertical direction, cast-in-place concrete connects two blocks of edge coincide floors and coincide roof beam into a whole in the cast-in-place district.
Description
Technical Field
The utility model belongs to the technical field of assembly type buildings, and particularly relates to a slab joint of an edge cast-in-place composite floor slab and a connection structure of the slab joint and a frame beam.
Background
In the fabricated building, in order to improve the construction efficiency and quality, the floor slabs are prefabricated in a factory, and then two floor slabs are cast in situ to form an integral structure in a construction site. In order to enhance the integrity of the connection between the floor slabs, the common mode is the composite floor slab, although the integrity of the composite floor slab is better, the field wet operation is more, the environmental pollution is greater, a large amount of templates and supports are needed, and the construction efficiency is lower. At present, all prefabricated floor slabs are adopted by construction units, concrete is cast in situ between two adjacent all prefabricated floor slabs, the two all prefabricated floor slabs are connected into a whole by the concrete, the construction efficiency is high, and the field wet operation is less. For example, the laminated slab and the connecting node used in the technical specification of the JGJ1-2014 fabricated concrete structure, and the laminated slab and the connecting node used in the technical specification of the T/CECS715-2020 reinforced truss concrete laminated slab application. In order to enhance the connection strength and the stress performance between two floor slabs, the side end faces of the composite slab are provided with protruding steel bars, so that the following technical problems are brought: the rib is formed on the side edge of the plate, so that the production process is complex, and the reinforcing steel bars are erected on site; the plates are thin and require a large number of supporting templates; the steel bars in the notch are complex to bind, and the binding workload is large; the on-site concrete pouring workload is large.
In summary, it is desirable to provide a slab joint and a connection structure between a slab joint and a frame beam of an edge cast-in-place composite floor slab to solve the corresponding technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a slab joint node and the connection structure with the frame roof beam of cast-in-place coincide floor in edge to solve corresponding technical problem among the prior art.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the plate seam node of the edge cast-in-place composite floor slab comprises two adjacent edge composite floor slabs, wherein step-shaped notches are formed in the side end faces of the edge composite floor slabs, the step-shaped notches of the two edge composite floor slabs are densely spliced to form a cast-in-place area, a plurality of three-dimensional additional ribs crossing the plate seams of the two edge composite floor slabs are placed in the cast-in-place area, each three-dimensional additional rib comprises a closed end and an open end, the closed ends and the open ends are reversely folded in the vertical direction, cast-in-place concrete is poured in the cast-in-place area to connect the two adjacent edge composite floor slabs into a whole, and the three-dimensional additional ribs are anchored in the cast-in-place concrete.
On the basis of the scheme, in another improved scheme, the three-dimensional additional rib comprises an opening hoop with one closed end and the other open end, the closed end of the opening hoop is reversely folded and extended in the vertical direction to form a supporting portion, the open end of the opening hoop is reversely folded and extended in the vertical direction to form a hook portion, and the supporting portion and the hook portion are identical in extending direction.
On the basis of the scheme, in another improved scheme, the three-dimensional additional ribs are parallel to each other, and the closed ends and the open ends of the three-dimensional additional ribs are staggered.
On the basis of the scheme, in another improved scheme, a plurality of stress bars are pre-embedded in the edge composite floor slab, C-shaped hoops are formed at the tail ends of the stress bars and are arranged in the step-shaped notch, and the distance between two adjacent C-shaped hoops of the edge composite floor slab is greater than the width of the three-dimensional additional rib.
On the basis of the scheme, in another improved scheme, the C-shaped stirrups of the two adjacent close-spliced edge superposed floors are staggered in the horizontal direction, the closed end of the three-dimensional additional rib is positioned between the two C-shaped stirrups of one of the edge superposed floors, and the other C-shaped stirrup of the edge superposed floor is positioned between the open end of the three-dimensional additional rib.
On the basis of the scheme, in another improved scheme, the C-shaped stirrups of the two adjacent densely spliced edge superposed floors are positioned on the same straight line in the horizontal direction, and the closed end and the open end of the three-dimensional additional rib are respectively placed between the two adjacent C-shaped stirrups of the cast-in-place area.
On the basis of the scheme, in another improved scheme, the middle part of the opening hoop is tightly attached to the surface of the step-shaped notch of the edge overlapped floor slab.
The utility model also provides a connecting structure of the slab joint of the edge cast-in-place composite floor slab and the frame beam, which comprises two edge composite floor slabs and a composite beam, wherein the composite beam comprises a prefabricated part at the bottom side and a cast-in-place part at the top side, a plurality of beam stirrups are pre-embedded in the prefabricated part, the bottoms of the beam stirrups are anchored in the prefabricated part, the tops of the beam stirrups are anchored in the cast-in-place part, the two edge composite floor slabs are respectively arranged at two sides of the top surface of the prefabricated part, the side end surfaces of the edge composite floor slabs are provided with step-shaped notches, the step-shaped notches of the two edge composite floor slabs and the cast-in-place part form a beam slab cast-in-place area, a plurality of three-dimensional additional ribs crossing the cast-in-place part are arranged in the beam slab cast-in-place area, the three-dimensional additional ribs comprise closed ends and open ends, and the closed ends and the open ends are reversely folded towards the vertical direction, the height of the three-dimensional additional rib is not more than that of the beam slab cast-in-place area, and cast-in-place concrete is poured in the beam slab cast-in-place area to connect the two edge superposed floor slabs and the superposed beams into a whole.
On the basis of the scheme, in another improved scheme, the cast-in-place part is further provided with at least one beam main reinforcement, and the beam main reinforcement penetrates through the plurality of beam stirrups and is fixed at the corner part of the beam stirrups.
On the basis of the scheme, in another improved scheme, the middle part of the three-dimensional additional rib spans the beam main rib, and the closed end and the open end of the three-dimensional additional rib are respectively placed at the step-shaped notches of the two edge composite floor slabs.
The technical scheme of the utility model has the beneficial technical effects that:
1. the slab joint node of the edge cast-in-place composite floor slab has the advantages that the steel bars are not extended outwards at the edges, the processing and the demoulding are easy, and the factory production efficiency is high; by arranging the three-dimensional additional ribs, the workload of the on-site reinforcing steel bar is extremely low, and the integrity and the stress performance between the two edge cast-in-situ composite floor slabs are improved.
2. The slab joint of the edge cast-in-place composite floor slab has the advantages that the slab joint of the edge cast-in-place composite floor slab is formed by closely splicing the joints of the two floor slabs, a bottom die is not required to be erected on the bottom side, the construction efficiency is improved, the local cast-in-place composite floor slab is locally cast-in-place, the cast-in-place concrete pouring amount is effectively reduced, the prefabricated slab surface is flat, the plastering and leveling are not required, the mechanical property is good, and the cast-in-place composite floor slab is equivalent to a cast-in-place slab.
3. According to the connecting structure of the edge cast-in-place composite floor slab and the frame beam, the two edge cast-in-place composite floor slabs are placed on the top sides of the prefabricated parts of the composite beams, the composite beams and the two edge cast-in-place composite floor slabs are connected into a whole through cast-in-place concrete, the formed reinforcing steel bars are small in installation amount and reliable in integral structure through placing the three-dimensional additional ribs, and a bottom die does not need to be erected at the bottom of the composite floor slab in a large scale, so that the construction efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic perspective view of slab joint nodes of an edge cast-in-place composite floor slab in example 1 (concrete in a cast-in-place area is not shown);
FIG. 2 is a vertical cross-sectional view of FIG. 1;
fig. 3 is a schematic perspective view of a three-dimensional additional rib in embodiment 1;
FIG. 4 is a top view of a slab joint of a composite cast-in-place edge floor slab in a modification of example 1;
fig. 5 is a schematic perspective view of a connection structure between a slab joint of an edge cast-in-place composite floor slab and a frame beam in example 2 (concrete in a slab cast-in-place area is not shown);
fig. 6 is a vertical sectional view of fig. 5.
Reference numerals:
1-first edge composite floor slab 2-second edge composite floor slab 3-cast-in-place area
4-three-dimensional additional rib 5-closed end 6-open end
7-C type stirrup 8-step-shaped notch 10-prefabricated part
11-beam slab cast-in-place area 12-beam stirrup 13-beam main reinforcement
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit 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 schematic drawings of fig. 1 to 3, the slab joint of the edge cast-in-place composite floor slab in the embodiment includes two edge composite floor slabs which are adjacently placed, step-shaped notches 8 are formed in side end faces of the edge composite floor slabs, the step-shaped notches 8 of the two edge composite floor slabs are densely spliced to form a cast-in-place area 3, a plurality of three-dimensional attached ribs 4 which cross slab joints of the two edge composite floor slabs are placed in the cast-in-place area 3, each three-dimensional attached rib 4 includes a closed end 5 and an open end 6, the closed ends 5 and the open ends 6 are reversely folded in the vertical direction, cast-in-place concrete is poured in the cast-in-place area 3 to connect the two adjacent edge composite floor slabs into a whole, and the three-dimensional attached ribs 4 are anchored in the cast-in-place concrete. Referring to the schematic diagram of fig. 1, in this embodiment, the step-shaped notches 8 of the first edge composite floor slab 1 and the second edge composite floor slab 2 are closely arranged, and the step-shaped notches 8 can be used as bottom templates of the cast-in-place area 3 without additionally erecting templates; the three-dimensional additional rib 4 spans two slab joints of the edge composite floor slab, the workload of the on-site reinforcing steel bar is small, and the integrity and the stress performance between the two edge cast-in-situ composite floor slabs are improved.
Referring to the schematic diagram of fig. 3, on the basis of the present embodiment, in another modified embodiment, the three-dimensional additional rib 4 includes an open hoop with one end closed and the other end open, the closed end 5 of the open hoop is folded back and extends to the vertical direction to form a supporting portion, the open end 6 of the open hoop is folded back and extends to the vertical direction to form a hooking portion, and the extending directions of the supporting portion and the hooking portion are the same.
Referring to the schematic diagrams of fig. 1 and fig. 3, a step-shaped gap 8 of about 3cm is reserved at the edge of the edge composite floor slab in the embodiment, the middle is fully prefabricated, and the edge is cast in situ by superposition. On the basis of the above embodiment, in another improved embodiment, a plurality of stress bars are pre-embedded in the edge composite floor slab, C-shaped stirrups 7 are formed at the ends of the stress bars, the C-shaped stirrups 7 are placed in the step-shaped notches 8, the C-shaped stirrups 7 do not exceed the outer edges of the edge composite floor slab, and the distance between two adjacent C-shaped stirrups 7 of the composite floor slab is greater than the width of the three-dimensional additional rib 4.
Referring to the schematic drawings of fig. 1 and fig. 2, in the present embodiment, the C-shaped stirrups 7 of two adjacent close-spliced edge-overlapped floor slabs are located on the same straight line in the horizontal direction, and the closed end 5 and the open end 6 of the three-dimensional additional rib 4 are respectively placed between two adjacent C-shaped stirrups 7 of the cast-in-place area 3.
Referring to the schematic diagram of fig. 3, the three-dimensional additional rib 4 in the embodiment is formed by bending an open hoop, so that the manufacturing cost is low, the structure is reasonable, the whole three-dimensional additional rib 4 has a certain height, the anchoring force between the three-dimensional additional rib and the concrete in the cast-in-place area 3 can be ensured to be stronger, the connection strength of the plate seam is enhanced, and cracking is avoided.
Referring to the illustration of fig. 4, in a modified example of the present embodiment, a plurality of solid additional ribs 4 are parallel to each other, and closed ends 5 and open ends 6 of the plurality of solid additional ribs 4 are alternately arranged.
Referring to the schematic diagram of fig. 4, in another modified embodiment, on the basis of the above embodiment, the C-shaped stirrups 7 of two adjacent overlapped edge floors are staggered in the horizontal direction, the closed end 5 of the three-dimensional additional rib 4 is located between the two C-shaped stirrups 7 of one of the overlapped edge floors, and one C-shaped stirrup 7 of the other overlapped edge floor is located between the open end 6 of the three-dimensional additional rib 4.
Referring to the schematic drawings of fig. 1 and 3, in this embodiment the middle of the open hoop abuts the surface of the stepped gap 8 of the edge laminated floor slab, i.e. the three dimensional additional ribs 4 in this embodiment are oriented in the same direction as in fig. 3.
Example 2
Referring to the schematic drawings of fig. 5 and fig. 6, the embodiment is a connection structure of an edge cast-in-place composite floor slab gap and a frame beam, and includes two edge composite floors and a composite beam, where the composite beam includes a prefabricated part 10 at the bottom side and a cast-in-place part at the top side, a plurality of beam stirrups 12 are pre-embedded in the prefabricated part 10, the bottoms of the beam stirrups 12 are anchored in the prefabricated part 10, the tops of the beam stirrups 12 are anchored in the cast-in-place part, step-shaped notches 8 of a first edge composite floor 1 and a second edge composite floor 2 are respectively arranged at both sides of the top surface of the prefabricated part 10, step-shaped notches 8 are arranged on the side end surfaces of the edge composite floors, the step-shaped notches 8 of the two edge composite floors and the cast-in-place part form a cast-in-place area 3, a plurality of three-dimensional additional ribs 4 crossing the cast-in-place part are arranged in the cast-in-place area 3, each three-dimensional additional rib 4 includes a closed end 5 and an open end 6, and both the closed end 5 and the open end 6 are reversely folded in the vertical direction, the height of the three-dimensional additional rib 4 is not more than that of the cast-in-place area 3, and cast-in-place concrete is poured in the cast-in-place area 3 to connect the two edge superposed floor slabs and the superposed beam into a whole.
Referring to the schematic diagrams of fig. 5 and fig. 6, in another modified embodiment, on the basis of the present embodiment, the cast-in-place portion is further provided with at least one beam main rib 13, and the beam main rib 13 penetrates through the plurality of beam stirrups 12 and is fixed to the corner portion of the beam stirrups 12.
Continuing to refer to the schematic diagrams of fig. 5 and fig. 6, in another modified embodiment, the middle part of the solid additional rib 4 spans the main beam rib 13, and the closed end 5 and the open end 6 of the solid additional rib 4 are respectively placed at the step-shaped gap 8 of the two edge-overlapped floor slabs.
The orientation of the placement of the three-dimensional additional ribs 4 in this embodiment 2 is opposite to that of embodiment 1: in embodiment 1, the middle part of the three-dimensional additional rib 4 is close to the surface of the step-shaped notch 8; in this example, the middle part of the three-dimensional additional rib 4 is at a certain distance from the step-shaped surface, so that the on-site steel bar arrangement operation is facilitated, and the reinforced concrete connection strength of the beam slab cast-in-place zone 1111 is ensured.
Referring to fig. 5 and 6, a construction method of a connection structure of an edge cast-in-place composite floor slab gap and a frame beam in one embodiment is briefly described:
firstly, hoisting the prefabricated part 10 of the superposed beam and arranging and positioning;
secondly, hoisting two edge cast-in-place composite floor slabs, and respectively placing the two edge cast-in-place composite floor slabs on two sides of the top of the prefabricated part 10;
then, the beam main reinforcement 13 penetrates through the beam stirrups 12 and is fixed by binding or welding, and the three-dimensional additional reinforcement 4 spanning the beam main reinforcement 13 is placed in the beam slab cast-in-place region 1111;
and finally, pouring concrete in the beam slab cast-in-place area 1111, and curing and forming.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various 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. The slab joint node of the edge cast-in-place composite floor slab comprises two adjacent edge composite floor slabs, wherein step-shaped notches are formed in the side end faces of the edge composite floor slabs, and the step-shaped notches of the two edge composite floor slabs are densely spliced to form a cast-in-place area.
2. The slab joint node of the edge cast-in-place composite floor slab as claimed in claim 1, wherein the three-dimensional additional rib comprises an open hoop with one closed end and the other open end, the closed end of the open hoop is folded back and extends in the vertical direction to form a supporting portion, the open end of the open hoop is folded back and extends in the vertical direction to form a hooking portion, and the supporting portion and the hooking portion extend in the same direction.
3. The slab joint node of the edge cast-in-place composite floor slab as claimed in claim 2, wherein the plurality of the three-dimensional additional ribs are parallel to each other, and the closed ends and the open ends of the plurality of the three-dimensional additional ribs are staggered.
4. The slab joint of the edge cast-in-place composite floor slab as claimed in claim 3, wherein a plurality of stress bars are pre-embedded in the edge composite floor slab, the ends of the stress bars form C-shaped hoops, the C-shaped hoops are placed in the step-shaped gaps, and the distance between two adjacent C-shaped hoops of the edge composite floor slab is greater than the width of the three-dimensional additional bar.
5. The slab joint node of the edge cast-in-place composite floor slab as claimed in claim 4, wherein the C-shaped stirrups of two adjacent closely spliced edge composite floor slabs are staggered in the horizontal direction, the closed end of the three-dimensional additional rib is positioned between the two C-shaped stirrups of one of the edge composite floor slabs, and one C-shaped stirrup of the other edge composite floor slab is positioned between the open ends of the three-dimensional additional rib.
6. The slab joint node of the edge cast-in-place composite floor slab as claimed in claim 4, wherein the C-shaped stirrups of two adjacent closely-spliced edge composite floor slabs are positioned on the same straight line in the horizontal direction, and the closed end and the open end of the three-dimensional additional rib are respectively placed between two adjacent C-shaped stirrups of the cast-in-place area.
7. The slab joint node of the edge cast-in-place composite floor slab as claimed in any one of claims 2 to 6, wherein the middle part of the opening hoop is tightly attached to the surface of the step-shaped notch of the edge composite floor slab.
8. A connection structure of an edge cast-in-place composite floor slab seam and a frame beam comprises two edge composite floors and a composite beam, wherein the composite beam comprises a prefabricated part at the bottom side and a cast-in-place part at the top side, a plurality of beam stirrups are pre-embedded in the prefabricated part, the bottoms of the beam stirrups are anchored in the prefabricated part, the tops of the beam stirrups are anchored in the cast-in-place part, the two edge composite floors are respectively arranged at two sides of the top surface of the prefabricated part, the side end surface of each edge composite floor is provided with a step-shaped notch, the step-shaped notches of the two edge composite floors and the cast-in-place part form a beam slab cast-in-place area, the beam slab cast-in-place area is internally provided with a plurality of three-dimensional additional ribs crossing the cast-in-place part, each three-dimensional additional rib comprises a closed end and an open end, and the closed ends and the open ends are both reversely folded towards the vertical direction, the height of the three-dimensional additional rib is not more than that of the beam slab cast-in-place area, and cast-in-place concrete is poured in the beam slab cast-in-place area to connect the two edge superposed floor slabs and the superposed beams into a whole.
9. The structure for connecting a slab gap of an edge cast-in-place composite floor slab and a frame beam as claimed in claim 8, wherein the cast-in-place part is further provided with at least one beam main rib, and the beam main rib penetrates through a plurality of beam stirrups and is fixed at the corner parts of the beam stirrups.
10. The structure for connecting a slab joint and a frame beam of an edge cast-in-place composite floor slab as claimed in claim 9, wherein the middle part of the three-dimensional additional rib spans the main beam rib, and the closed end and the open end of the three-dimensional additional rib are respectively placed at the step-shaped gap of the two edge composite floor slabs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120732544.2U CN216130355U (en) | 2021-04-09 | 2021-04-09 | Plate seam joint of edge cast-in-situ composite floor slab and connection structure of plate seam joint and frame beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120732544.2U CN216130355U (en) | 2021-04-09 | 2021-04-09 | Plate seam joint of edge cast-in-situ composite floor slab and connection structure of plate seam joint and frame beam |
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| CN216130355U true CN216130355U (en) | 2022-03-25 |
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| CN202120732544.2U Expired - Fee Related CN216130355U (en) | 2021-04-09 | 2021-04-09 | Plate seam joint of edge cast-in-situ composite floor slab and connection structure of plate seam joint and frame beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119711688A (en) * | 2024-12-05 | 2025-03-28 | 中交第二航务工程局有限公司 | A method for anti-cracking construction of large-area thin-layer composite floor slabs |
-
2021
- 2021-04-09 CN CN202120732544.2U patent/CN216130355U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119711688A (en) * | 2024-12-05 | 2025-03-28 | 中交第二航务工程局有限公司 | A method for anti-cracking construction of large-area thin-layer composite floor slabs |
| CN119711688B (en) * | 2024-12-05 | 2025-10-21 | 中交第二航务工程局有限公司 | A crack-resistant construction method for large-area thin-layer composite floor slabs |
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Granted publication date: 20220325 |