CN109972744B - Assembled flexible connection device and construction method - Google Patents
Assembled flexible connection device and construction method Download PDFInfo
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- CN109972744B CN109972744B CN201910261318.8A CN201910261318A CN109972744B CN 109972744 B CN109972744 B CN 109972744B CN 201910261318 A CN201910261318 A CN 201910261318A CN 109972744 B CN109972744 B CN 109972744B
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- 238000010276 construction Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 36
- 239000004567 concrete Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- 238000004873 anchoring Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 abstract description 3
- 230000000452 restraining effect Effects 0.000 description 9
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses an assembled flexible connecting device and a construction method, wherein the assembled flexible connecting device comprises a low-relaxation high-strength prestress steel strand, a sleeve, a screw, an upper anchor cap, a press cap, a wedge block, an upper anchor constraint anchor section, a lower anchor constraint anchor section, a wedge block, a press cap, a compression spring and a lower anchor cap. The flexible connecting device has strong tensile pulling capacity in the axial direction, and can meet the requirement of internal force transmission of stressed steel bars at joints of prefabricated parts; the device also has certain lateral deformation capability, and when the spliced upper anchorage device and lower anchorage device or the overhanging flexible connecting device and the grouting holes have an unadjustable error, the flexible connecting device can be completely inserted into the grouting holes through the lateral deformation of the device, so that the assembly of the components is not influenced; according to the construction method, the non-shrinkage high-strength grouting material is pre-poured into the grouting holes and then extruded by the flexible connecting device, so that the excessive slurry is extruded, and the risk of non-compaction of grouting is avoided.
Description
Technical Field
The invention relates to a connecting device of an assembled building component and a construction method, and belongs to the field of construction of deformable flexible connecting ribs.
Background
The assembled concrete building is a building like a concrete structure or a combined structure which is designed and built by taking a concrete prefabricated part produced in a factory as a main part through a field assembly method. The assembly method of the components generally comprises the steps of on-site post-pouring laminated layer concrete, steel bar anchoring post-pouring concrete connection and the like, and the steel bar connection can be realized by grouting steel tube connection, welding, mechanical connection, reserved hole lap joint connection and the like.
At present, the conventional method for pouring high-strength concrete or cement mortar is adopted for connecting the floor slab of the fabricated building and the reinforced concrete column or the shear wall, but the grouting holes of the grouting steel pipe barrel are often blocked due to insufficient protection or misoperation in the construction process, so that concrete or cement mortar cannot be poured, and once the number of empty joints reaches a certain number, the integral disconnection of the spliced joints can be caused under the action of earthquake or wind load, so that serious consequences are caused. In practical engineering application, the fact that the overhanging steel bars with larger number in the connecting mode are extremely difficult to splice due to deformation in the transportation process or construction deviation of the embedded pipe barrel is often found, and even the phenomenon of violently cutting the steel bars exists.
In the above background, the technical scheme is generated.
Disclosure of Invention
The invention aims to provide a flexible connecting device of an assembled structure and a construction method thereof, which are used for solving the technical problems of difficult splicing or difficult grouting caused by steel bar deformation in the prior art.
In order to achieve the above object, the solution of the present invention is:
an assembled flexible connection unit, characterized in that: the lower anchor comprises a lower anchor constraint anchor section, a lower wedge block, a lower pressing cap, a pressure-bearing spring and a lower anchor cap, wherein the bolt comprises a screw rod, a nut and a nut, the screw rod penetrates through the upper anchor cap, the nut abuts against the upper pressing cap, an upper screw rod is arranged on the upper pressing cap, an upper screw hole is formed in the upper wedge block, the upper screw hole is arranged corresponding to the upper screw rod of the upper pressing cap, the bottom of the upper anchor cap is of a hollow structure so as to form a space for accommodating the upper anchor constraint anchor section, a threaded section is arranged on an inner cavity of the upper anchor cap, and the upper anchor constraint anchor section is provided with a threaded section buckled with the upper anchor cap;
the lower pressing cap is provided with a lower screw rod, the lower wedge block is provided with a lower screw hole, the lower screw hole is arranged corresponding to the lower screw rod of the lower pressing cap, the top of the lower anchor cap is of a hollow structure so as to form a space for accommodating the lower anchor constraint anchor section, the inner cavity of the lower anchor cap is provided with a threaded section, the lower anchor constraint anchor section is provided with a threaded section buckled with the lower anchor cap, the end heads of the low-relaxation high-strength prestress steel strands penetrate through the space between the upper pressing cap and the upper wedge block and the space between the lower pressing cap and the lower wedge block, one end of the pressing spring abuts against the lower pressing cap of the lower anchor, the other end of the pressing spring is connected with the lower anchor cap, the low-relaxation high-strength prestress steel strands are uniformly distributed around the upper wedge block and the lower wedge block, and the lower wedge block are respectively nested in the upper anchor constraint anchor section and the lower wedge block;
the upper wedge block and the lower wedge block are conical wedge blocks;
the bolt is a high-strength bolt.
As a preferable mode of the invention, 3-4 low-relaxation high-strength prestress steel strands are suitable.
As a preferred mode of the invention, the upper anchor restraining anchor section is an upper anchor restraining anchor section with an inverted horn shape inside, and the lower anchor restraining anchor section is a lower anchor restraining anchor section with a horn shape inside.
As a preferred mode of the invention, the pipe barrel is a metal pipe barrel or an FRP pipe barrel, a plastic pipe barrel and the like with certain strength.
A construction method of an assembled flexible connection device is characterized in that: adopting the assembly type flexible connecting device, tightening the screw rod of the bolt through the nut of the bolt pre-embedded in the connecting profile steel, welding the stress bar and the connecting profile steel, anchoring the low-relaxation high-strength pre-stress steel strand on the upper anchor, tightly attaching the upper anchor to a concrete template, perforating the concrete template, penetrating out the low-relaxation high-strength pre-stress steel strand, temporarily protecting the low-relaxation high-strength pre-stress steel strand, pouring concrete, forming an upper member with an exposed insertion end of the low-relaxation high-strength pre-stress steel strand, and sleeving a pipe barrel on the periphery of the low-relaxation high-strength pre-stress steel strand;
the exposed lower end of the low-relaxation high-strength prestress steel strand passes through the lower anchorage device, the lower pressing cap of the lower anchorage device is installed, and the lower end of the low-relaxation high-strength prestress steel strand of the lower anchorage device is pressed tightly to form the upper component with the flexible connecting device;
and arranging pre-buried grouting holes at corresponding positions of the flexible connecting device, hoisting, positioning and aligning the upper member with the flexible connecting device to the grouting holes, grouting non-shrinkage self-leveling high-strength grouting material into the grouting holes after pre-wetting, aligning the upper member pre-buried with the flexible connecting ribs with the centers of the grouting holes, slowly lowering the upper member, slowly inserting the flexible connecting device into the slurry in the grouting holes by utilizing the dead weight of the upper member, and extruding the slurry until the redundant slurry is discharged.
As a preferable mode of the invention, the number of the flexible connection devices is the same as the number of the stress bars, and the positions of the flexible connection devices and the stress bars are in one-to-one correspondence.
As a preferred mode of the invention, the number of the flexible connection devices and the number of the stress ribs are different, and the flexible connection devices and the stress ribs are arranged in a staggered manner.
As a preferred form of the invention, the tube is at least 2 sections.
By adopting the technical scheme, the flexible connecting device has strong tensile pulling capacity in the axial direction, and can meet the requirement of internal force transmission of the stress bars at the joints of the prefabricated parts; the steel strand has certain lateral deformation capability, and the low-relaxation high-strength prestress steel strand cannot be influenced by collision in the hoisting or transportation process before incomplete splicing; when the upper and lower members or the overhanging flexible connecting device and the grouting holes which are spliced have an unadjustable error, the flexible connecting device is completely inserted into the grouting holes through lateral deformation of the flexible connecting device, so that the assembly of the members is not affected. The construction method of the invention is to pour the non-shrinkage high-strength grouting material into the grouting holes in advance, then squeeze the grouting material by the flexible connecting device of the invention, and squeeze out the redundant slurry. The grouting compaction in each grouting hole can be ensured, and potential safety hazards such as non-compaction grouting caused by blockage of the grouting holes or the grouting outlets in the existing pressure grouting mode can be avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic perspective view of an upper anchor of the present invention;
FIG. 3 is a schematic perspective view of the lower anchor of the present invention;
FIG. 4 is a schematic diagram of the connection structure of the present invention and a member.
The labels correspond to the following: bolt 1, nut 11, screw 12, nut 13, upper anchor cap 2, upper press cap 31, lower press cap 32, upper screw 33, lower screw 34, upper wedge 41, lower wedge 42, upper screw hole 43, lower screw hole 44, upper anchor tie anchor 5, inverted horn mouth 51, lower anchor tie anchor 6, horn mouth 61, lower anchor cap 7, compression spring 8, low-relaxation high-strength prestressed steel strand 9, barrel 10, connecting section steel 100, stress bar 101, upper member 102, lower member 103, grouting hole 104.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
In the description of the present invention, it should be noted that unless explicitly specified and limited otherwise, terms such as "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two original parts. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention relates to a fabricated flexible connecting device, which comprises 1 upper anchor, 1 group of low-relaxation high-strength prestress steel strands 9, 1 lower anchor and 1 group of pipe barrel 10, wherein the upper anchor comprises a bolt 1, an upper anchor cap 2, an upper pressing cap 31, an upper wedge block 41 and an upper anchor constraint anchor section 5, and the lower anchor comprises a lower anchor constraint anchor section 6, a lower wedge block 42, a lower pressing cap 32, a compression spring 8 and a lower anchor cap 7.
As shown in fig. 1-3, the bolt 1 comprises a nut 11, a screw rod 12 and a nut 13, the screw rod 12 penetrates through the upper anchor cap 2, the nut 11 is propped against the upper pressing cap 31, an upper screw rod 33 is arranged on the upper pressing cap 31, an upper screw hole 43 is arranged on the upper wedge block 41, the upper screw hole 43 of the upper wedge block 41 is arranged corresponding to the upper screw rod 33 of the upper pressing cap 31, the bottom of the upper anchor cap 2 is provided with a hollow structure so as to form a space for accommodating the upper anchor constraint anchor section 5, a threaded section is arranged on the inner cavity of the upper anchor cap 2, and the upper anchor constraint anchor section 5 is provided with a threaded section buckled with the upper anchor cap 2. The lower screw 34 is arranged on the lower pressing cap 32, the lower wedge 42 is provided with the lower screw 44, the lower screw 44 is arranged corresponding to the lower screw 34 of the lower pressing cap 32, the top of the lower anchor cap 7 is provided with a hollow structure so as to form a space for accommodating the lower anchor constraint anchor section 6, the inner cavity of the lower anchor cap 7 is provided with a threaded section, the lower anchor constraint anchor section 6 is provided with a threaded section buckled with the lower anchor cap 7, two ends of the low-relaxation high-strength prestress steel strand 9 respectively penetrate through the space between the upper pressing cap 31 and the upper wedge 41 and the space between the lower wedge 42 and the lower pressing cap 32, one end of the compression spring 8 abuts against the lower pressing cap 32 of the lower anchor, the other end of the compression spring 8 is connected with the lower anchor cap 7, the low-relaxation high-strength prestress steel strand 9 is uniformly distributed around the upper wedge 41 and the lower wedge 42, and the upper wedge 41 and the lower wedge 42 are respectively nested in the upper anchor constraint anchor section 5 and the lower anchor constraint anchor section 6.
Preferably, the number of the low-relaxation high-strength prestress steel strands 9 is 3-4.
Preferably, both the upper wedge 41 and the lower wedge 42 are conical wedges.
Preferably, the upper anchor restraining anchor section 5 is an upper anchor restraining anchor section with an inverted horn shape inside, and the lower anchor restraining anchor section 6 is a lower anchor restraining anchor section with a horn shape inside.
Preferably, the bolt 1 is a high strength bolt.
Preferably, the tube 10 is a metal tube or an FRP tube, a plastic tube, etc. having a certain strength.
Preferably, the bottom of the lower anchor cap 7 is an inverted triangle shaped lower anchor cap.
The construction method of the assembled flexible connecting device comprises the steps of adopting the assembled flexible connecting device, tightening a screw rod 12 through a nut 13 pre-embedded in a connecting section steel 100, welding a stress bar 101 and the connecting section steel 100, anchoring a low-relaxation high-strength prestress steel strand 9 on an upper anchor, tightly attaching the upper anchor to a concrete template, perforating the concrete template, penetrating the low-relaxation high-strength prestress steel strand 9, temporarily protecting the low-relaxation high-strength prestress steel strand 9, pouring concrete, forming an inserting end assembled upper member 102 exposed by the low-relaxation high-strength prestress steel strand 9, and sleeving a pipe barrel 10 on the periphery of the low-relaxation high-strength prestress steel strand 9;
and arranging pre-buried grouting holes 104 at corresponding positions of the flexible connecting devices, filling non-shrinkage self-leveling high-strength grouting material into the pre-wetted grouting holes 104, aligning the upper member 102 (the flexible connecting devices face downwards) pre-buried with the flexible connecting ribs with the centers of the grouting holes 104, slowly lowering the upper member 102, slowly inserting the flexible connecting devices into the grouting material of the grouting holes 104 by utilizing the dead weight of the upper member 102, and extruding the grouting material until the redundant grouting material is discharged.
Further, the number of the flexible connection devices is the same as the number of the stress bars 101, and the positions of the flexible connection devices and the stress bars 101 are in one-to-one correspondence.
Further, the number of the flexible connection devices is different from the number of the stress ribs 101, and the flexible connection devices and the stress ribs 101 are arranged in a staggered manner.
Further, the tube 10 is at least 2 sections.
When in operation, the device comprises: first, the low-relaxation high-strength prestressed steel strand 9 is cut to the required anchoring length (plus 2 times the bending length of the end). Then the upper end of the low-relaxation high-strength prestress wire 9 is clamped between the upper press cap 31 of the upper anchor and the upper wedge 41 of the upper anchor, and the upper press cap 31 of the upper anchor is screwed. The low-relaxation high-strength prestress steel strand 9 passes through the middle of the upper anchorage constraint anchor section 5, so that the upper wedge 41 of the upper anchorage is matched with the inverted horn-shaped hole 51 of the upper anchorage constraint anchor section 5 to be squeezed tightly, and the low-relaxation high-strength prestress steel strand 9 is uniformly distributed around the upper wedge 41 of the upper anchorage. Preferably, the surfaces of the conical upper wedge 41 and the inverted horn-shaped hole 51 are roughened, so that when the low-relaxation high-strength pre-stressed steel strand 9 is subjected to downward tension, the upper wedge 41 and the inverted horn-shaped hole 51 of the upper anchor are mutually pressed more and more tightly, thereby anchoring the low-relaxation high-strength pre-stressed steel strand 9 and fully exerting the tensile strength thereof. The high-strength bolt 1 passes through the middle of the upper anchor cap 2, then the threaded section of the upper anchor cap 2 is buckled with the threaded section of the upper anchor restraining anchor section 5, and the threads are screwed down, so that the nut 13 compresses the upper pressing cap 31 of the upper anchor.
As shown in fig. 4, this embodiment facilitates the connection between the building elements, so that the overall connection effect between the elements is better. The components are not limited to columns, walls, platforms or floors.
The upper anchor with the low-relaxation high-strength prestressed steel strand 9 which has been installed is anchored with the stress bars 101 in the upper member 102 by means of connecting section steel 100 or welding or the like in the manner of fig. 4, and then concrete is poured. After the concrete is cured, the pipe barrel 10 is installed on the low-relaxation high-strength prestress steel strand 9 of each group after being transported to an assembling site. Then the lower end of the low-relaxation high-strength pre-stress steel strand 9 passes through the middle of the lower anchor constraint anchoring section 6, then the lower wedge block 42 of the lower anchor is installed in the bell mouth 61 of the lower anchor constraint anchoring section 6, the low-relaxation high-strength pre-stress steel strand 9 is adjusted to be uniformly distributed around the lower wedge block 42 of the lower anchor, the lower end of the low-relaxation high-strength pre-stress steel strand 9 is bent to the end face of the lower wedge block 42 of the lower anchor, the lower pressing cap 32 of the lower anchor is installed, and the lower end of the low-relaxation high-strength pre-stress steel strand 9 of the lower anchor is pressed. The threaded section of the lower anchor cap 7 and the threaded section of the lower anchor constraint anchor section 6 are buckled and screwed, so that the compression spring 8 pushes against the lower compression cap 32 of the lower anchor. The exposed section of the flexible connection unit not only has a high tensile load capacity but also has a certain lateral deformability.
The lower member 103 with the grouting holes 104 is firstly installed in place, then a little water is used for wetting the grouting holes 104, non-shrinkage high-strength grouting material is poured into the grouting holes 104, and a certain distance is reserved between the liquid surface of the grouting material and the top surface of the grouting holes 104, so that the grouting material is prevented from overflowing too much after the flexible connecting device is inserted. After the upper member 102 with the flexible connecting device is lifted and positioned, the upper member 102 is slowly lowered, the self weight of the upper member 102 is utilized, the flexible connecting device is extruded into non-shrinkage high-strength grouting material in the grouting holes 104 until the upper member 102 is sunk in place, after the temporary fixing, after the grouting material reaches the design strength, the upper member 102 and the lower member 103 are connected into a whole.
It should be noted that, the number of the flexible connection devices and the stress bars 101 may be determined by calculating structural stress according to actual construction conditions. Optionally, the number of the flexible connection devices is the same as the number of the stress bars 101, and the positions of the flexible connection devices and the stress bars 101 are in one-to-one correspondence; the number of flexible connection means and the number of force-receiving bars 101 may also be different, for example, the flexible connection means and the force-receiving bars 101 may be arranged offset.
By adopting the technical scheme, the flexible connecting device has high pulling resistance in the axial direction, and can meet the requirement of internal force transmission of the stress rib 101 at the joint of the prefabricated part 102. The flexible connecting device also has certain lateral deformability, and the low-relaxation high-strength prestress steel strand 9 cannot be bent due to collision in the hoisting or transportation process before incomplete splicing; when the upper anchor and the lower anchor which are spliced or the overhanging flexible connecting device and the grouting holes 104 have an unadjustable error, the flexible connecting device is completely inserted into the grouting holes 104 through lateral deformation of the flexible connecting device, so that the assembly of the component 102 is not affected. The construction method of the invention is to pour non-shrink high strength grouting material into the grouting holes 104 in advance, then squeeze the grouting material by the flexible connecting device of the invention, and squeeze out the surplus slurry. The grouting in each grouting hole 104 can be ensured to be compact, and potential safety hazards such as non-compact grouting caused by the blockage of the grouting holes or the grouting outlets in the current pressure grouting mode can be avoided.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (8)
1. An assembled flexible connection unit, characterized in that: the lower anchor comprises a lower anchor constraint anchor section, a lower wedge block, a lower pressing cap, a pressure-bearing spring and a lower anchor cap, wherein the bolt comprises a screw rod, a nut and a nut, the screw rod penetrates through the upper anchor cap, the nut abuts against the upper pressing cap, an upper screw rod is arranged on the upper pressing cap, an upper screw hole is formed in the upper wedge block, the upper screw hole is arranged corresponding to the upper screw rod of the upper pressing cap, the bottom of the upper anchor cap is of a hollow structure so as to form a space for accommodating the upper anchor constraint anchor section, a threaded section is arranged on an inner cavity of the upper anchor cap, and the upper anchor constraint anchor section is provided with a threaded section buckled with the upper anchor cap;
the lower pressing cap is provided with a lower screw rod, the lower wedge block is provided with a lower screw hole, the lower screw hole is arranged corresponding to the lower screw rod of the lower pressing cap, the top of the lower anchor cap is of a hollow structure so as to form a space for accommodating the lower anchor constraint anchor section, the inner cavity of the lower anchor cap is provided with a threaded section, the lower anchor constraint anchor section is provided with a threaded section buckled with the lower anchor cap, the end heads of the low-relaxation high-strength prestress steel strands penetrate through the space between the upper pressing cap and the upper wedge block and the space between the lower pressing cap and the lower wedge block, one end of the pressing spring abuts against the lower pressing cap of the lower anchor, the other end of the pressing spring is connected with the lower anchor cap, the low-relaxation high-strength prestress steel strands are uniformly distributed around the upper wedge block and the lower wedge block, and the lower wedge block are respectively nested in the upper anchor constraint anchor section and the lower wedge block;
the upper wedge block and the lower wedge block are conical wedge blocks;
the bolt is a high-strength bolt.
2. A fabricated flexible connection unit as claimed in claim 1, wherein: the number of the groups of the low-relaxation high-strength prestressed steel strands is 3-4.
3. A fabricated flexible connection unit as claimed in claim 1, wherein: the upper anchor constraint anchor section is an upper anchor constraint anchor section with an inverted horn shape inside, and the lower anchor constraint anchor section is a lower anchor constraint anchor section with a horn shape inside.
4. A fabricated flexible connection unit as claimed in claim 1, wherein: the pipe barrel is a metal pipe barrel or an FRP pipe barrel with certain strength, and is a plastic pipe barrel.
5. A construction method of an assembled flexible connection device is characterized in that: the method comprises the steps of adopting the assembled flexible connecting device according to claim 1, screwing the screw rod of the bolt through the nut of the bolt pre-embedded in the connecting profile steel, welding a stress bar and the connecting profile steel, anchoring the low-relaxation high-strength pre-stress steel strand on the upper anchor, tightly attaching the upper anchor to a concrete template, perforating the concrete template, penetrating out the low-relaxation high-strength pre-stress steel strand, temporarily protecting the low-relaxation high-strength pre-stress steel strand, pouring concrete, forming an upper member with an exposed insertion end assembled by the low-relaxation high-strength pre-stress steel strand, and sleeving the pipe barrel on the periphery of the low-relaxation high-strength pre-stress steel strand;
the exposed lower end of the low-relaxation high-strength prestress steel strand passes through the lower anchorage device, the lower pressing cap of the lower anchorage device is installed, and the lower end of the low-relaxation high-strength prestress steel strand of the lower anchorage device is pressed tightly to form the upper component with the flexible connecting device;
and arranging pre-buried grouting holes at corresponding positions of the flexible connecting device, hoisting, positioning and aligning the upper member with the flexible connecting device to the grouting holes, grouting non-shrinkage self-leveling high-strength grouting material into the grouting holes after pre-wetting, aligning the upper member pre-buried with the flexible connecting ribs with the centers of the grouting holes, slowly lowering the upper member, slowly inserting the flexible connecting device into the slurry in the grouting holes by utilizing the dead weight of the upper member, and extruding the slurry until the redundant slurry is discharged.
6. The construction method of the fabricated flexible connection unit according to claim 5, wherein: the method is characterized in that: the number of the flexible connecting devices is the same as the number of the stressed bars, and the positions of the flexible connecting devices and the stressed bars are in one-to-one correspondence.
7. The construction method of the fabricated flexible connection unit according to claim 5, wherein: the method is characterized in that: the number of the flexible connecting devices is different from the number of the stressed bars, and the flexible connecting devices and the stressed bars are arranged in a staggered mode.
8. The construction method of the fabricated flexible connection unit according to claim 5, wherein: the method is characterized in that: the tube is at least 2 sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910261318.8A CN109972744B (en) | 2019-04-02 | 2019-04-02 | Assembled flexible connection device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910261318.8A CN109972744B (en) | 2019-04-02 | 2019-04-02 | Assembled flexible connection device and construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN109972744A CN109972744A (en) | 2019-07-05 |
| CN109972744B true CN109972744B (en) | 2023-12-15 |
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| CN201910261318.8A Active CN109972744B (en) | 2019-04-02 | 2019-04-02 | Assembled flexible connection device and construction method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204781348U (en) * | 2015-06-19 | 2015-11-18 | 中民筑友有限公司 | Soft all alone connecting piece, prefab and wallboard |
| CA2928363A1 (en) * | 2015-04-29 | 2016-10-29 | e.Construct.USA, LLC | Flange-to-flange connection of precast concrete members |
| WO2019056716A1 (en) * | 2017-09-21 | 2019-03-28 | 中国建筑股份有限公司 | Fully-assembled prestress concrete frame anti-seismic energy dissipation member system and construction method |
| CN210177699U (en) * | 2019-04-02 | 2020-03-24 | 华侨大学 | Assembled flexible connection device |
-
2019
- 2019-04-02 CN CN201910261318.8A patent/CN109972744B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2928363A1 (en) * | 2015-04-29 | 2016-10-29 | e.Construct.USA, LLC | Flange-to-flange connection of precast concrete members |
| CN204781348U (en) * | 2015-06-19 | 2015-11-18 | 中民筑友有限公司 | Soft all alone connecting piece, prefab and wallboard |
| WO2019056716A1 (en) * | 2017-09-21 | 2019-03-28 | 中国建筑股份有限公司 | Fully-assembled prestress concrete frame anti-seismic energy dissipation member system and construction method |
| CN210177699U (en) * | 2019-04-02 | 2020-03-24 | 华侨大学 | Assembled flexible connection device |
Non-Patent Citations (1)
| Title |
|---|
| 自锁式预应力锚固体系的研究;谢正元;苏强;;上海公路(第03期);全文 * |
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| CN109972744A (en) | 2019-07-05 |
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