CN216475532U - Prestressed assembly type concrete frame node with bonding function - Google Patents
Prestressed assembly type concrete frame node with bonding function Download PDFInfo
- Publication number
- CN216475532U CN216475532U CN202122806977.0U CN202122806977U CN216475532U CN 216475532 U CN216475532 U CN 216475532U CN 202122806977 U CN202122806977 U CN 202122806977U CN 216475532 U CN216475532 U CN 216475532U
- Authority
- CN
- China
- Prior art keywords
- concrete
- metal
- prestressed
- notch
- gap
- 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
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model discloses a bonded prestressed assembly type concrete frame node, which comprises a concrete column and at least one concrete notch beam, wherein the concrete column is provided with a plurality of concrete notch beams; the side surface of the concrete column is provided with a bracket, the shape of the notch of the concrete notch beam is matched with that of the bracket, and the concrete notch beam is supported on the bracket through the notch; be fixed with metal rubber composite board on the breach terminal surface of concrete breach roof beam, metal rubber composite board includes the metal sheet and fixes the rubber seal layer on the metal sheet surface, and the through-hole that supplies the prestress wire to pass is seted up at the middle part of metal sheet and rubber seal layer. According to the utility model, the metal rubber composite plate is adopted to carry out pressure sealing at the beam-column joint through prestress, the prestress pressure and the good sealing performance of rubber are reasonably utilized, the problem that the joint is difficult to seal or is not tight in sealing is solved, and the phenomena of slurry leakage, insufficient grouting pressure, non-compact grouting and the like in the subsequent grouting process are avoided.
Description
Technical Field
The utility model belongs to the technical field of prefabricated concrete structures, and particularly relates to a prefabricated concrete frame node with bonding prestress.
Background
The node connection mode of early assembled structure adopts ordinary connection modes such as bracket connection or tooth's socket connection more, and this type of node connection mode construction procedure is complicated, and the cycle is longer, and local node atress is comparatively weak, and the wholeness atress is relatively poor. Through a series of experiments and researches, experts and scholars develop various joint connection modes such as flexible connection, prestress connection and hybrid connection, wherein the bonded prestress assembly type concrete frame adopting a post-tensioning bonded prestress connection technology has good earthquake-resistant performance, meets a failure mode of 'strong columns and weak beams', and meets the earthquake-resistant design requirement of 'strong joints'.
For the bonded prestressed fabricated concrete frame, the joint of the beam-column joint is generally sealed by epoxy resin. However, after the prestressed steel strands are tensioned, gaps among the beams and the columns are small, and epoxy resin is difficult to fill; after the epoxy resin is filled, the epoxy resin needs a long time for realizing good bonding with the cross section of the beam column, and the construction efficiency is seriously influenced. Meanwhile, when the prestressed steel strand is tensioned for the second time, the bonding between the epoxy resin and the cross section of the beam column can be damaged, so that the problems of slurry leakage, insufficient grouting pressure, non-compact grouting and the like are caused.
Because the joint of the prestressed concrete frame with the adhesive prestress has the problems of slurry leakage and the like, the existing prestressed concrete frame mostly adopts the unbonded prestressed connection technology. However, the safety of the unbonded prestress technology is low, and the reliability of the anchorage device is strongly depended on; if the anchorage device is damaged, the whole prestressed tendon can be failed. On the contrary, the bonding prestress connection technology causes the prestressed tendon and the concrete to be bonded with each other, thereby reducing the effect of the prestress transferred by the anchorage device and improving the anchoring reliability and durability. Therefore, the problem that the joints of the prefabricated concrete frame with the bonded prestress are difficult to seal becomes a bottleneck for restricting the popularization and application of the bonded prestress technology in the prefabricated concrete structure.
Therefore, it is necessary to develop a method for sealing a joint of a prestressed concrete frame with adhesive bonding, which is safer, more efficient and has better sealing performance.
Disclosure of Invention
In view of the shortcomings of the prior art, the utility model aims to provide a prefabricated concrete frame node with bonding prestress.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a fabricated concrete frame node with bonding prestress comprises a concrete column and at least one concrete gap beam; prestressed ducts are reserved in the concrete columns and the concrete gap beams, and prestressed steel strands are installed in the prestressed ducts; furthermore, the prestressed ducts are arranged in a linear manner in the concrete columns and the concrete gap beams; the side surface of the concrete column is provided with a bracket, the shape of the notch of the concrete notch beam is matched with the shape of the bracket, and the concrete notch beam is supported on the bracket through the notch of the concrete notch beam;
a metal rubber composite plate is fixed on the end face of the gap of the concrete gap beam, the metal rubber composite plate comprises a metal plate and a rubber sealing layer fixed on the outer surface of the metal plate, and through holes for the prestressed steel strands to pass through are formed in the middle of the metal plate and the rubber sealing layer; in the assembling process, the prestress steel strands are used for prepressing, the rubber sealing layer is deformed under the stress, the prestress hole channel interface disconnected at the beam-column joint is well sealed, and the connection tightness of the concrete gap beam and the concrete column can be ensured. Further, be used for also being fixed with metal rubber composite sheet with the regional position department of concrete gap roof beam contact in concrete column and the bracket, rubber seal layer in the metal rubber composite sheet is towards concrete gap roof beam, can further increase the sealed effect between concrete column and the concrete gap roof beam through this design.
According to a preferable technical scheme, the metal plate is a low-carbon steel plate, and the rubber sealing layer is made of rubber; the rubber is an elastic polymer material, has fatigue resistance, corrosion resistance and aging resistance, has extremely low compression set and long service life; under the action of extrusion force, the rubber layer deforms to form sealing connection between the concrete column and the concrete gap beam. Furthermore, the concrete column and the concrete gap beam are internally provided with connecting ribs for connecting metal plates. In the prefabrication stage of the concrete column and the concrete gap beam, the metal rubber composite plates are respectively embedded into the preset positions in the beam column template through the connecting ribs and are aligned with the prestressed pore channels, and the metal plates in the metal rubber composite plates are welded with the connecting ribs with enough anchoring length or directly welded with the concrete column and the steel ribs in the concrete gap beam.
The utility model has the beneficial effects that:
according to the utility model, the metal rubber composite plate is adopted at the joint of the concrete column and the concrete gap beam for pressure sealing through prestress, the prestress pressure and the good sealing performance of rubber are reasonably utilized, the problem that the joint is difficult to seal or not tight in sealing is solved, and the phenomena of slurry leakage, insufficient grouting pressure, non-compact grouting and the like in the subsequent grouting process are avoided. The principle is as follows: the prestressed steel strands are tensioned, so that the prestressed concrete gap beam bears large compressive stress, the metal rubber composite plate is pressed simultaneously under the action of the tension of the prestressed steel strands, the rubber sealing layer is pressed and deformed to cause the beam-column combination part to be subjected to pressure sealing, and the prefabricated frame forms a whole. The prefabricated frame is subjected to prestress hole channel pressure grouting, under the condition that prestress holes are correspondingly aligned, the hole channels are communicated in the frame, and the joint part at the weak position of the original grouting pressure is sealed by rubber pressure with good deformation, so that a good sealing effect is obtained.
Drawings
FIG. 1 is a schematic view of the assembly of a concrete frame joint with a bonded prestressed assembly according to the present invention;
FIG. 2 is a front view of a concrete frame joint with a bonded prestressed concrete frame according to the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
reference numerals: the concrete-filled steel tube comprises 1-a concrete column, 2-a concrete gap beam, 3-a bracket, 4-a prestressed duct, 5-a prestressed steel strand, 6-a metal rubber composite plate, 7-a metal plate and 8-a rubber sealing layer.
Detailed Description
The present invention will be further described with reference to the following examples and drawings so that those skilled in the art can better understand the present invention and can carry out the present invention, but the examples are not intended to limit the present invention.
It should be noted that, unless otherwise specifically stated or limited, the terms "connected" and "fixed" are used broadly herein to indicate that two components connected to each other are fixed together, typically by welding, screwing, or gluing.
Referring to fig. 1 to 3, a prefabricated concrete frame node with bonded prestress includes a concrete column 1 and at least one concrete gap beam 2; specifically, the number of the concrete gap beams 2 is two, and the two concrete gap beams 2 are symmetrically arranged on two sides of the concrete column 1; prestressed ducts 4 which are linearly arranged are reserved in the concrete columns 1 and the concrete gap beams 2, and prestressed steel strands 5 are installed in the prestressed ducts 4; the pair of opposite side surfaces of the concrete column 1 are provided with symmetrically arranged brackets 3, the shape of the gap of the concrete gap beam 2 is matched with the shape of the brackets 3, and the concrete gap beam 2 is supported on the brackets 3 through the gap.
And a metal rubber composite plate 6 is fixed on the gap end face of the concrete gap beam 2, the metal rubber composite plate 6 comprises a metal plate 7 and a rubber sealing layer 8 fixed on the outer surface of the metal plate, and through holes for the prestressed steel strands 5 to pass through are formed in the middle parts of the metal plate 7 and the rubber sealing layer 8. Further, for strengthening the sealing effect, the position of the area for contacting with the concrete gap beam 2 in the concrete column 1 and the bracket 3 is also fixed with a metal rubber composite plate 6, and a rubber sealing layer in the metal rubber composite plate 6 faces the concrete gap beam, so that the sealing effect between the concrete column 1 and the concrete gap beam 2 can be further improved through the design.
In a preferred embodiment, the metal plate 7 of the metal rubber composite plate 6 is a mild steel plate, and the rubber sealing layer 8 is made of rubber; before construction, the concrete column 1 and the concrete gap beam 2 need to be prefabricated in a factory; before concrete is poured, a metal rubber composite plate 6 needs to be embedded at the joint position of the concrete column 1 and the concrete gap beam 2; the manufacturing method of the metal rubber composite plate 6 comprises the following steps: firstly, performing surface treatment on one surface of a metal plate 7, for example, removing surface impurities and grease by using an acid cleaning agent, spraying an adhesive to compound a rubber sealing layer 8 and the metal plate 7 after sand blasting and polishing, and adding a vulcanizing agent to perform vulcanization to obtain a shaped metal rubber composite plate; then, the metal rubber composite plate 6 is pre-embedded at a preset position in the beam column template, and the concrete operation is as follows: on the other side of the metal plate 7, the metal plate is welded with a connecting rib with enough anchoring length or directly welded with a concrete column and a steel rib in a concrete gap beam, 2 metal corrugated pipes are arranged in the concrete column 1 and the concrete gap beam 2 as reserved prestressed pore channels and are symmetrically arranged up and down; and finally, pouring concrete to form a prefabricated concrete column 1 and a concrete gap beam 2, and maintaining for 28 days for assembly.
When the device is installed on site, firstly hoisting the prefabricated concrete column 1 to a corresponding accurate position, and then hoisting the prefabricated concrete gap beam 2 to be placed on a bracket 3 of the concrete column 1, so that the pre-stressed pore channel 4 reserved at the beam-column joint corresponds to the position, and the metal rubber composite plate 6 at the joint also corresponds to the position; penetrating a prestressed steel strand 5 for tensioning, wherein the prestressed steel strand 5 is a bonded prestressed steel strand, and connecting the concrete column 1 with the concrete notch beam 2 by tensioning the prestressed steel strand 5; when the prestress is tensioned, the rubber layers 8 on the metal rubber composite plates 6 are mutually extruded, so that the joints of the beam-column joints are sealed in a pressure manner; and finally, grouting the prestressed duct 4 to ensure grouting compactness.
The above-described embodiments are merely preferred embodiments of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should be construed as the protection scope of the present invention.
Claims (5)
1. A fabricated concrete frame node with bonding prestress comprises a concrete column and at least one concrete gap beam; prestressed ducts are reserved in the concrete columns and the concrete gap beams, and prestressed steel strands are installed in the prestressed ducts; the side surface of the concrete column is provided with a bracket, the shape of the notch of the concrete notch beam is matched with the shape of the bracket, and the concrete notch beam is supported on the bracket through the notch of the concrete notch beam; the method is characterized in that:
the concrete gap beam is characterized in that a metal rubber composite plate is fixed on the gap end face of the concrete gap beam, the metal rubber composite plate comprises a metal plate and a rubber sealing layer fixed on the outer surface of the metal plate, and through holes for the prestressed steel strands to pass through are formed in the middle of the metal plate and the rubber sealing layer.
2. The bonded prestressed concrete frame joint according to claim 1, wherein: and the positions of the concrete columns and the bracket in the areas which are used for being in contact with the concrete gap beams are also fixed with metal rubber composite plates, and rubber sealing layers in the metal rubber composite plates face the concrete gap beams.
3. The bonded prestressed concrete frame joint according to claim 1 or 2, wherein: the metal plate is a low-carbon steel plate, and the rubber sealing layer is made of rubber.
4. The bonded prestressed concrete frame joint according to claim 3, wherein: and connecting ribs for connecting the metal plates are arranged in the concrete columns and the concrete gap beams.
5. The bonded prestressed concrete frame joint according to claim 3, wherein: the prestressed ducts are arranged in a linear manner in the concrete columns and the concrete gap beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122806977.0U CN216475532U (en) | 2021-11-15 | 2021-11-15 | Prestressed assembly type concrete frame node with bonding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122806977.0U CN216475532U (en) | 2021-11-15 | 2021-11-15 | Prestressed assembly type concrete frame node with bonding function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216475532U true CN216475532U (en) | 2022-05-10 |
Family
ID=81397113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122806977.0U Active CN216475532U (en) | 2021-11-15 | 2021-11-15 | Prestressed assembly type concrete frame node with bonding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216475532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914462A (en) * | 2021-11-15 | 2022-01-11 | 合肥工业大学 | Assembly type concrete frame node with bonding prestress and slurry sealing method thereof |
-
2021
- 2021-11-15 CN CN202122806977.0U patent/CN216475532U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914462A (en) * | 2021-11-15 | 2022-01-11 | 合肥工业大学 | Assembly type concrete frame node with bonding prestress and slurry sealing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105113425A (en) | Novel construction method for efficient fabricated steel-concrete composite beam | |
| CN208039535U (en) | A kind of prefabricated assembled Fill model of separate type | |
| CN216475532U (en) | Prestressed assembly type concrete frame node with bonding function | |
| CN105350445A (en) | Novel efficient assembly-type reinforced concrete composite beam | |
| CN111877573A (en) | Assembly type building sealing waterproof construction system | |
| CN111749149A (en) | Transverse prestressed steel wire rope reinforcing structure of assembled hollow slab beam bridge and construction method | |
| CN112127263A (en) | Prefabricated bridge deck wet joint connecting structure, prefabricated bridge and method | |
| CN110846999A (en) | Assembled prestressed steel and concrete combined box girder and construction process | |
| KR100805842B1 (en) | A joint device and construction method of concrete structure | |
| CN112267373A (en) | Partially unbonded grouting corrugated pipe prefabricated assembly connecting structure and construction method | |
| CN113914462A (en) | Assembly type concrete frame node with bonding prestress and slurry sealing method thereof | |
| CN111827091A (en) | Prefabricated assembled hollow pier connected through prestress and construction method | |
| CN111560796A (en) | Assembly type mass spring floating plate system inter-plate connecting assembly | |
| CN110747735A (en) | Anchoring connection device for precast concrete bridge deck of steel-concrete composite beam | |
| CN212357961U (en) | Partially unbonded grouting corrugated pipe prefabrication, assembling and connecting structure | |
| US20220154419A1 (en) | Assembled subway station and construction method thereof | |
| CN212404648U (en) | Connection structure between floating slab system boards | |
| CN213681681U (en) | Wet seam joint construction of prefabricated decking | |
| CN114775899A (en) | bolt-anchor-U-shaped steel plate connected precast concrete beam inter-span splicing structure and method | |
| CN113981808A (en) | Structure and construction method of segmental precast concrete T-shaped beam | |
| JP5343262B2 (en) | Repair structure and repair method for flexible waterproof joint | |
| CN115506416B (en) | Lining grouting waterproof structure of junction between new concrete and old concrete of underground engineering and construction process | |
| CN110939292A (en) | Segment assembly type building translation track and translation method | |
| CN212714597U (en) | Transverse prestressed steel wire rope reinforcing structure of assembled hollow plate girder bridge | |
| CN215561902U (en) | Anchoring structure of elastic telescopic member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |