CN214833897U - Large-span-thickness-ratio beam-slab integrated prefabricated unit - Google Patents
Large-span-thickness-ratio beam-slab integrated prefabricated unit Download PDFInfo
- Publication number
- CN214833897U CN214833897U CN202120975374.0U CN202120975374U CN214833897U CN 214833897 U CN214833897 U CN 214833897U CN 202120975374 U CN202120975374 U CN 202120975374U CN 214833897 U CN214833897 U CN 214833897U
- Authority
- CN
- China
- Prior art keywords
- slab
- prefabricated
- integrated
- flat plate
- flanges
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 15
- 230000010354 integration Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000011900 installation process Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 6
- 239000004567 concrete Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
Images
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model relates to a large span-thickness ratio beam-slab integrated prefabricating unit, which comprises an integrated prefabricating beam slab, a pre-embedded fixing assembly and a prestress applying assembly; the prefabricated integrated beam slab comprises a flat plate and two flanges which are arranged on the bottom surface of the flat plate and are distributed at intervals left and right; the embedded fixing assemblies are arranged in the flanges of the prefabricated integrated beam slab, and the embedded fixing assemblies in the left and right flanges correspond to each other one by one; the prestress applying assembly is connected between the two corresponding embedded fixing assemblies. An object of the utility model is to provide a can show the prefabricated unit of the big thick ratio beam slab integration of striding that promotes the construction speed, reduce engineering cost. The utility model has the advantages that: the combined action of the pre-buried fixing assembly and the prestress applying assembly arranged in the prefabricated integrated beam slab can enable the flat plate on the prefabricated integrated beam slab to be in an inverted arch state, so that the deformation of the prefabricated integrated beam slab in the installation process is obviously reduced, and the cracking of a prefabricated component is avoided.
Description
Technical Field
The utility model relates to a building technical field, concretely relates to stride thickness ratio roof beam slab integration prefabricated unit and mounting method greatly.
Background
In recent years, fabricated buildings have been rapidly developed in our country. The national institute is discharged as the guide opinion about the vigorous development of the assembly type building, so that the green building and the building material are further definitely and actively popularized in the future, and the assembly type building accounts for 30 percent of the newly built building in about 10 years.
When the existing fabricated concrete building adopts a composite floor slab and a prefabricated composite beam, supports are generally required to be arranged at the construction stage. When the layer height is large, the support system is complex and expensive. The beam-slab integrated prefabricated unit can realize the support-free and mold-free construction of the precast concrete structure, accelerate the construction speed and reduce the project and measure cost. In order to minimize the influence of the rib beam on the indoor space, the rib pitch of the beam-plate integrated unit needs to be increased in a specific case. In order to reduce the weight of the prefabricated member and improve the convenience of transportation and installation, it is desirable that the thickness of the prefabricated plate between the ribs of the beam-plate integrated unit is as small as possible. But when the span thickness ratio of the precast slab is large, the problems of excessive deformation and cracking exist in the processes of demoulding, transportation and hoisting.
Disclosure of Invention
An object of the utility model is to provide a can show the prefabricated unit of the big thick ratio beam slab integration of striding that promotes the construction speed, reduce engineering cost.
The purpose of the utility model is realized through the following technical scheme: a large span-thickness ratio beam-slab integrated prefabricated unit comprises a prefabricated integrated beam slab, a pre-buried fixing assembly and a prestress applying assembly; the prefabricated integrated beam slab comprises a flat plate and two flanges which are arranged on the bottom surface of the flat plate and are distributed at intervals left and right, and each flange extends forwards and backwards; the embedded fixing assemblies are arranged in the flanges of the prefabricated integrated beam slab, and the embedded fixing assemblies in the left and right flanges correspond to each other one by one; the prestress applying assembly is connected between the two corresponding embedded fixing assemblies and applies an anti-arching acting force to the flat plate by drawing the embedded fixing assemblies.
Compare prior art, the utility model has the advantages of:
1. the utility model discloses full play the geometrical characteristics of the prefabricated unit cell type cross-section of beam slab integration, the combination effect of subassembly is applyed to pre-buried fixed subassembly and prestressing force that utilizes to set up in prefabricated integrated beam slab, can be so that the flat board on the prefabricated integrated beam slab is in the anti-state of encircleing to showing the deflection that reduces prefabricated integrated beam slab in the installation, avoiding prefabricated component's fracture, making the use of striding thick ratio beam slab integration prefabricated unit greatly become possible.
2. The prestress applying assembly has the advantages of small dead weight, convenience in disassembly and assembly, convenience in field manual operation and capability of remarkably reducing the construction cost.
3. The combined use of the lifting lugs and the truss reinforcing steel bars on the beam can reduce the deformation of the prefabricated integrated beam slab in the demolding and hoisting processes, and avoids the cracking of prefabricated parts.
Drawings
Fig. 1 is a schematic structural view of a prefabricated integrated beam slab.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a schematic view of the structure of the length-adjusting member.
Figure 4 is a schematic view of a tab construction.
Fig. 5 is a schematic structural view of the pre-buried fixing component.
Fig. 6 is a schematic diagram of the pre-burying position of the pre-burying fixing assembly.
FIG. 7 is a schematic view showing the installation state of the integrated precast unit of the large span-thickness ratio beam slab.
FIG. 8 is a schematic view showing the installation state of the integrated precast unit of the large span-thickness ratio beam slab.
FIG. 9 is a schematic view showing the installation state of the integrated precast unit of the large span-thickness ratio beam slab.
Description of reference numerals: 1 prefabricated integrated beam slab, 1-1 flat plate, 1-2 flanges, 1-3 grooves, 1-4 longitudinal steel bars, 1-5 truss steel bars, 1-6 beam upper lifting lugs, 1-7 shear key slots, 2 pre-embedded fixing assemblies, 2-1 anchoring sections, 2-2 bolt connecting sections, 2-3 screw holes, 3 prestress applying assemblies, 3-1 pull rings, 3-2 rigging screw buckles and 3-3 pull hooks.
Detailed Description
The invention is described in detail below with reference to the drawings and examples of the specification:
fig. 1 to 9 are schematic views illustrating an embodiment of a large span-thickness ratio beam-slab integrated prefabricated unit provided by the present invention.
A large span-thickness ratio beam-slab integrated prefabricated unit comprises a prefabricated integrated beam slab 1, a pre-buried fixing assembly 2 and a prestress applying assembly 3;
the prefabricated integrated beam slab 1 comprises a flat plate 1-1 and two flanges 1-2 which are arranged on the bottom surface of the flat plate 1-1 and distributed at intervals left and right, wherein each flange 1-2 extends forwards and backwards;
the embedded fixing components 2 are arranged in the flanges 1-2 of the prefabricated integrated beam slab 1, and the embedded fixing components 2 in the left and right flanges 1-2 are in one-to-one correspondence;
the prestress applying assembly 3 is connected between the two corresponding embedded fixing assemblies 2, and the prestress applying assembly 3 applies an anti-arching acting force to the flat plate 1-1 by drawing the embedded fixing assemblies 2.
The embedded fixing assembly 2 comprises an anchoring section 2-1 and a bolt connecting section 2-2, a screw hole 2-3 is formed in the end portion of the bolt connecting section 2-2, and the screw hole 2-3 is located on the inner wall surface of the flange 1-2;
the anchoring section 2-1 is perpendicular to the bolt connecting section 2-2.
The prestress applying assembly 3 comprises a length adjusting part and two pull rings 3-1 which are respectively arranged on the left side and the right side of the length adjusting part, and the pull rings 3-1 are screwed and fixed in screw holes 2-3 through bolts.
The embedded fixed components 2 are arranged in a plurality of groups, the embedded fixed components 2 on the same side are arranged at intervals in the front-back direction, and the distance between the embedded fixed components is determined according to stress calculation.
The length adjusting piece is a rigging screw buckle 3-2, and the outer end of a screw rod of the rigging screw buckle 3-2 is provided with a draw hook 3-3 matched with the pull ring 3-1.
The outer side edge of the flange 1-2 is flush with the side edge of the corresponding side of the flat plate 1-1, and a groove 1-3 is formed in the outer side corner where the flange 1-2 and the flat plate 1-1 are intersected. The depth of the grooves 1-3 can be determined by force calculation.
The wall surfaces of the grooves 1-3 are rough surfaces.
Longitudinal steel bars 1-4 and stirrups are arranged inside the flanges 1-2.
Truss steel bars 1-5 perpendicular to the flanges 1-2 are arranged on the flat plate 1-1 in an array mode. The truss steel bars 1-5 are also used as hoisting points in the plate.
The top surface of the flat plate 1-1 is a rough surface, and the bottom of the flat plate is provided with a bidirectional reinforcing steel bar net piece.
The left side and the right side of the top surface of the flat plate 1-1 are provided with a plurality of beam upper lifting lugs 1-6, the beam upper lifting lugs 1-6 on the two sides are in one-to-one correspondence, and the beam upper lifting lugs 1-6 are positioned on the upper sides of the flanges 1-2.
Lifting lugs 1-6 on the beams on the same side are arranged at intervals in the front-back direction, and the distance is determined according to stress calculation.
The prefabricated integrated beam slab 1 is positioned at a beam column joint, and the end parts of flanges 1-2 of the prefabricated integrated beam slab are provided with shear key grooves 1-7. Longitudinal steel bars 1-7 on the flanges 1-2 extend into the beam-column joint.
The utility model discloses an installation as follows:
1. pouring the prefabricated integrated beam slab 1 in a mould;
2. after the concrete of the prefabricated integrated beam slab 1 is hardened, the integrated beam slab is removed from the mold by using the lifting lugs 1-6 on the beam and the truss reinforcing steel bars 1-5 (see figure 7);
3. erecting the prefabricated integrated beam slab 1 on a supporting frame to enable the lower part of the prefabricated integrated beam slab to have a construction operation space;
4. screwing the pull ring 3-1 into the bolt connecting section 2-2 (see fig. 8);
5. buckling the draw hooks 3-3 at the two ends of the rigging turnbuckle 3-2 into the pull ring 3-1;
6. the rigging turnbuckles 3-2 are adjusted so that the tension rods on both sides of the rigging turnbuckles 3-2 are in a tensioned state, and prestress is applied to the prefabricated integrated beam slab in the vertical span direction (see fig. 9).
7. And after the prefabricated integrated beam slab 1 is hoisted in place and the surface concrete is poured and reaches the strength, dismantling the rigging turnbuckle 3-2 and the pull ring 3-1.
Claims (9)
1. The utility model provides a stride thick than beam slab integration prefabricated unit greatly which characterized in that: the beam slab comprises a prefabricated integrated beam slab (1), an embedded fixing assembly (2) and a prestress applying assembly (3);
the prefabricated integrated beam slab (1) comprises a flat plate (1-1) and two flanges (1-2) which are arranged on the bottom surface of the flat plate (1-1) and distributed at intervals from left to right, wherein the flanges (1-2) extend forwards and backwards;
the embedded fixing assemblies (2) are arranged in flanges (1-2) of the prefabricated integrated beam slab (1), and the embedded fixing assemblies (2) in the left and right flanges (1-2) are in one-to-one correspondence;
the prestress applying assembly (3) is connected between the two corresponding embedded fixing assemblies (2), and the prestress applying assembly (3) applies an anti-arching acting force to the flat plate (1-1) through drawing the embedded fixing assemblies (2).
2. The large span-thickness ratio beam-slab integrated prefabricated unit according to claim 1, wherein: the embedded fixing assembly (2) comprises an anchoring section (2-1) and a bolt connecting section (2-2), a screw hole (2-3) is formed in the end portion of the bolt connecting section (2-2), and the screw hole (2-3) is located on the inner wall surface of the flange (1-2);
the prestress applying assembly (3) comprises a length adjusting part and two pull rings (3-1) which are arranged on the left side and the right side of the length adjusting part respectively, and the pull rings (3-1) are fixed in screw holes (2-3) in a screwing mode through bolts.
3. The large span-thickness ratio beam-slab integrated prefabricated unit according to claim 2, wherein: the length adjusting piece is a rigging screw buckle (3-2), and the outer end of a screw rod of the rigging screw buckle (3-2) is provided with a drag hook (3-3) matched with the pull ring (3-1).
4. The large span-thickness ratio beam-slab integrated prefabricated unit according to any one of claims 1 to 3, wherein: the outer side edge of the flange (1-2) is flush with the side edge of the corresponding side of the flat plate (1-1), and a groove (1-3) is formed in the outer side corner where the flange (1-2) and the flat plate (1-1) are intersected.
5. The large span-thickness ratio beam-slab integrated prefabricated unit according to any one of claims 1 to 3, wherein: longitudinal steel bars (1-4) and stirrups are arranged inside the flanges (1-2).
6. The large span-thickness ratio beam-slab integrated prefabricated unit according to any one of claims 1 to 3, wherein: truss steel bars (1-5) perpendicular to the flanges (1-2) are arranged on the flat plate (1-1) in an array mode.
7. The large span-thickness ratio beam-slab integrated prefabricated unit according to any one of claims 1 to 3, wherein: the top surface of the flat plate (1-1) is a rough surface, and the bottom of the flat plate is provided with a bidirectional reinforcing steel bar net piece.
8. The large span-thickness ratio beam-slab integrated prefabricated unit according to any one of claims 1 to 3, wherein: the left side and the right side of the top surface of the flat plate (1-1) are provided with a plurality of beam upper lifting lugs (1-6), the beam upper lifting lugs (1-6) on the two sides are in one-to-one correspondence, and the beam upper lifting lugs (1-6) are positioned on the upper sides of the flanges (1-2).
9. The large span-thickness ratio beam-slab integrated prefabricated unit according to any one of claims 1 to 3, wherein: the prefabricated integrated beam slab (1) is positioned at a beam column joint, and the end of a flange (1-2) of the prefabricated integrated beam slab is provided with a shear key groove (1-7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120975374.0U CN214833897U (en) | 2021-05-08 | 2021-05-08 | Large-span-thickness-ratio beam-slab integrated prefabricated unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120975374.0U CN214833897U (en) | 2021-05-08 | 2021-05-08 | Large-span-thickness-ratio beam-slab integrated prefabricated unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214833897U true CN214833897U (en) | 2021-11-23 |
Family
ID=78772755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120975374.0U Active CN214833897U (en) | 2021-05-08 | 2021-05-08 | Large-span-thickness-ratio beam-slab integrated prefabricated unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214833897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123517A (en) * | 2021-05-08 | 2021-07-16 | 福建建工装配式建筑研究院有限公司 | Large-span-thickness-ratio beam-slab integrated prefabricated unit and mounting method |
-
2021
- 2021-05-08 CN CN202120975374.0U patent/CN214833897U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123517A (en) * | 2021-05-08 | 2021-07-16 | 福建建工装配式建筑研究院有限公司 | Large-span-thickness-ratio beam-slab integrated prefabricated unit and mounting method |
| CN113123517B (en) * | 2021-05-08 | 2025-12-23 | 福建建工装配式建筑研究院有限公司 | Integrated precast unit and installation method for large span and thickness beams |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2004520511A (en) | Prestressed synthetic truss girder and method of manufacturing the same | |
| CN213766424U (en) | Pretensioning prestressed concrete assembled prefabricated pedestal | |
| CN112411352B (en) | An assembled steel-concrete composite rigid frame bridge and construction method thereof | |
| CN214833897U (en) | Large-span-thickness-ratio beam-slab integrated prefabricated unit | |
| KR102256091B1 (en) | Psc girder fabricated using pre-tensioning stand apparatus for curved tendon and fabricated method thereof | |
| KR100682794B1 (en) | How to make prestressed steel composite beam | |
| CN109137757B (en) | Large-span corrugated steel web box girder buckling restrained structure and construction method | |
| CN215054252U (en) | L-shaped double-ripple steel plate concrete combined shear wall | |
| KR101850498B1 (en) | Composite part of steel girder and manufacturing method of composite part | |
| CN214459548U (en) | Assembled steel and concrete combined rigid frame bridge | |
| KR102249063B1 (en) | Prestressed concrete beam bridge improving load carrying coherence of end beam and durability using anchor plate and construction method thereof | |
| CN202520017U (en) | Construction structure of variable cross-section prestress overhanging type folding beam for stand | |
| CN222120732U (en) | A prefabricated ECC-steel plate-concrete composite beam | |
| CN211645939U (en) | Concrete thin-wall web beam with built-in steel plate | |
| CN113123517A (en) | Large-span-thickness-ratio beam-slab integrated prefabricated unit and mounting method | |
| CN118065505A (en) | Large-span hollow slab and design method thereof | |
| CN210195036U (en) | Groove type composite beam | |
| CN210458906U (en) | Prefabricated bridge structure in tunnel | |
| CN109227930B (en) | A formwork system for prefabricated prestressed double T beams using the folded line pretensioning method | |
| KR20220124513A (en) | Hybrid PC beam and construction method thereof | |
| CN114657865A (en) | Capping beam of semi-prefabricated assembly type high-performance concrete formwork and construction method | |
| CN217461121U (en) | Truss string truss type bidirectional steel bar truss floor bearing plate | |
| CN221421717U (en) | Low tower cable-stayed reinforcing system of bridge | |
| CN120739222B (en) | Lightweight prestressed stiffened composite variable cross-section concrete structural beam with large cantilever sections | |
| CN215715981U (en) | Template-free and support-free assembled integral frame system for storage type logistics building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |