CN111997204A - Transverse position-adjustable assembled vertical component connecting structure and construction method thereof - Google Patents
Transverse position-adjustable assembled vertical component connecting structure and construction method thereof Download PDFInfo
- Publication number
- CN111997204A CN111997204A CN202010845947.8A CN202010845947A CN111997204A CN 111997204 A CN111997204 A CN 111997204A CN 202010845947 A CN202010845947 A CN 202010845947A CN 111997204 A CN111997204 A CN 111997204A
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- Prior art keywords
- grouting
- sleeve
- vertical
- steel bar
- component
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- 238000010276 construction Methods 0.000 title claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 239000011440 grout Substances 0.000 claims abstract description 28
- 210000001503 joint Anatomy 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims 2
- 239000004570 mortar (masonry) Substances 0.000 abstract description 11
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
- E04B1/4164—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head with an adjustment sleeve
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses an assembled vertical component connecting structure with adjustable transverse position, which comprises a vertical grouting hole arranged in a lower component, a lower component steel bar joint and a grouting sleeve arranged in the vertical grouting hole, and an overhanging connecting steel bar joint arranged in an upper component, wherein the lower component steel bar joint is fixed in the grouting sleeve in a mode of axially penetrating through a grouting sleeve end-sealed via hole and reserving a horizontal gap between the lower component steel bar joint and the side wall of the via hole; through the self-flowing characteristic and the dead weight effect of mortar, ensure that the mortar can closely knit packing grout sleeve, can satisfy the moderate degree demand of shifting between grout sleeve and the upper and lower vertical reinforcing bar, play horizontal position adjustable effect, make the butt joint position of vertical reinforcing bar have the self-adaptability, reach the purpose that the atress reinforcing bar is effectively connected, can guarantee that the atress reinforcing bar connection within range is full of the bonding thick liquid.
Description
Technical Field
The invention relates to the technical field of concrete assembly, in particular to an assembled vertical member connecting structure with an adjustable transverse position and a construction method thereof.
Background
The concrete structure is a most widely applied structural system in the field of buildings in China and mainly comprises vertical components and horizontal components, wherein the vertical components are the most important components for guaranteeing the safety of the structure, and the concrete structure is particularly important in the building industrialization process represented by prefabricated buildings which is widely promoted at present. The vertical component in the existing concrete structure system mainly comprises a column in a frame structure and a shear wall in a shear wall structure, the two components adopt a sleeve and grouting connection method in the existing fabricated concrete structure, a metal sleeve is embedded in an upper component, an overhanging reinforcing steel bar of a lower component is inserted into a sleeve of the upper component during connection, and then grouting treatment is carried out on a gap in the sleeve, so that the sleeve and a connection interface are filled with high-strength grouting materials, and the purpose of connecting the vertical components is achieved. The connection quality of vertical reinforcing bars in the vertical component directly determines the safety of the structure, and the operability of connection construction not only influences the connection quality, but also influences the construction period and the engineering cost. Currently, grout sleeves in fabricated concrete structures suffer from the following general disadvantages: (1) the node installation degree of difficulty is great: a plurality of steel bars on the prefabricated part are connected on the same node, and once the position deviation of individual steel bars does not meet the requirement, the smooth installation of the steel bar grouting sleeve of the whole node is hindered; (2) it is difficult to verify the grouting quality: as the grouting sleeve is used for injecting the cement slurry after the reinforcing steel bar enters the sleeve, and no effective detection means is available after injection is finished, the field destructive inspection of a specific case in actual engineering shows that the condition of insufficient grouting exists really, and serious hidden danger is left for the engineering quality.
Disclosure of Invention
In view of this, the invention aims to provide an assembled vertical member connection structure with an adjustable transverse position and a construction method thereof, which can solve the problems of high joint installation difficulty and grouting compactness of a grouting sleeve.
The invention relates to an assembled vertical component connecting structure with adjustable transverse position, which comprises a vertical grouting hole arranged in a lower component, a lower component steel bar joint and a grouting sleeve arranged in the vertical grouting hole, and an overhanging connecting steel bar joint arranged in an upper component, wherein the lower component steel bar joint is fixed in the grouting sleeve in a mode of axially penetrating through a grouting sleeve end-sealing via hole and reserving a horizontal gap between the lower component steel bar joint and the side wall of the via hole;
furthermore, a grouting opening of the grouting sleeve is coaxially arranged with the grouting sleeve, and the overhanging connecting steel bar joint is inserted into the grouting sleeve along the grouting opening of the grouting sleeve;
further, a horizontal pre-gap is reserved between the grouting sleeve and the inner side wall of the vertical grouting hole before grouting;
furthermore, a pressure-bearing fixing piece for fixedly connecting a lower member steel bar joint is arranged on the end-sealed inner wall of the grouting sleeve, and the grouting sleeve and the pressure-bearing fixing piece have horizontal movement displacement;
furthermore, the pressure-bearing fixing piece is a nut in threaded connection with the lower member steel bar joint;
furthermore, a pressure-bearing spring is arranged between the bottom of the vertical grouting hole and the end seal of the grouting sleeve;
further, the pressure-bearing spring and the lower member steel bar joint are coaxially arranged;
further, the inner diameter of the mouth of the grouting sleeve towards the end sealing of the sleeve is gradually increased.
The invention also discloses a construction method of the assembling type vertical component connecting structure with the adjustable transverse position, which comprises the following steps:
a. prefabricating a vertical component, and arranging a vertical grouting hole on a lower component;
b. hoisting the lower component according to the designed elevation and installing a grouting sleeve in the vertical grouting hole;
c. and hoisting the upper component, moving the upper component downwards after grouting to the vertical grouting hole and the grouting sleeve of the same component node so that the overhanging connecting steel bar joint of the upper component is inserted into the grouting sleeve of the lower component.
The invention has the beneficial effects that: the invention discloses an assembled vertical component connecting structure with adjustable transverse position and a preparation method thereof, which connects and arranges vertical steel bars in vertical grouting holes of a concrete component positioned below, the self-flowing characteristic and the self-weight action of the mortar ensure that the mortar can be compactly filled in the grouting sleeve, the vertical steel bar of the upper member is downwards inserted into the grouting sleeve in the vertical grouting hole of the lower member after grouting, through the horizontal clearance reserved between the lower member steel bar joint and the side wall of the grouting sleeve blocking through hole, in the inserting process of the steel bar of the upper component after grouting, the requirement of proper displacement between the grouting sleeve and the upper and lower vertical steel bars can be met, the effect of adjusting the transverse position is achieved, the butt joint position of the vertical steel bars is made to have self-adaptability, the purpose of effectively connecting the stressed steel bars is achieved, and the condition that the stressed steel bars are full of bonding slurry in the connecting range can be ensured. In addition, only one layer of thin paddle is needed between the horizontal end surfaces of the vertical components formed by the connecting structure of the invention to transmit pressure and shearing force, and wet joints are not needed, thus simplifying operation steps and improving construction efficiency.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a bottom view of fig. 1.
Detailed Description
The transverse position-adjustable assembled vertical component connecting structure comprises a vertical grouting hole 1 formed in a lower component, a lower component steel bar joint 2 and a grouting sleeve 3 which are arranged in the vertical grouting hole 1, and an overhanging connecting steel bar joint 4 arranged on an upper component, wherein the lower component steel bar joint 2 penetrates through a grouting sleeve 3 end-sealing via hole 5 in the axial direction and is fixed in the grouting sleeve 3 in a manner of reserving a horizontal gap 6 between the lower component steel bar joint 2 and the side wall of the via hole, and the overhanging connecting steel bar joint 4 is inserted into the grouting sleeve 3 in the axial direction and butted with the lower component steel bar joint 2 after downward grouting is carried out along the opening end of the vertical grouting hole 1; the vertical grouting hole 1 is formed in the lower component and used for grouting after the grouting sleeve 3 is installed, the lower end of the grouting sleeve 3 in the lower component is in threaded connection with the anchoring lower component steel bar joint 2, and the upper end of the grouting sleeve is used for being connected with the extending connecting steel bar joint 4 of the upper component. The end sealing of the grouting sleeve 3 has a through hole for the lower component steel bar joint 2 to pass through, the vertical grouting hole 1 is grouted to be excessive, the mortar 10 can be compactly filled in the grouting sleeve through the self-flowing characteristic and the self-weight characteristic of the mortar 10, the self-compaction is realized, the upper component is immediately moved down after grouting to enable the overhanging connecting steel bar joint 4 to be inserted into the grouting sleeve 3 from the vertical grouting hole 1, and the compactness of the mortar 10 is further enhanced. Meanwhile, because the horizontal clearance is reserved between the lower component steel bar joint 2 and the side wall of the through hole, the requirement of proper displacement between the grouting sleeve 3 and the upper and lower vertical steel bars can be met in the inserting process of the steel bar of the upper component after grouting, the effect of adjustable transverse position is achieved, the butt joint position of the vertical steel bars has self-adaptability, the purpose of effective connection of the stressed steel bars is achieved, and the condition that the stressed steel bars are full of bonding slurry in the connection range can be ensured. The simplicity, accuracy and uniformity of installation of the same node are improved.
In this embodiment, the grouting opening of the grouting sleeve 3 is coaxial with the grouting sleeve 3, and the overhanging connecting steel bar joint 4 is inserted into the grouting sleeve 3 along the grouting opening of the grouting sleeve 3; be convenient for make closely knit packing grout sleeve 3 of thick liquid and vertical grout hole 1, also be convenient for improve the accuracy that overhanging joint bar connects 4 and inserts in grout sleeve 3 along grout sleeve 3's grout mouth.
In the embodiment, a horizontal pre-gap 7 is reserved between the grouting sleeve 3 and the inner side wall of the vertical grouting hole 1 before grouting; the grouting sleeve 3 is installed on site, so that the grouting sleeve can be tightly attached to the inner side wall of the vertical grouting hole 1 during installation, and a certain installation gap can be formed between the grouting sleeve and the inner side wall of the vertical grouting hole 1. The horizontal gap of the embodiment is a specially reserved horizontal gap when the grouting sleeve 3 is installed, and the gap can be a gap larger than mm or a gap larger than 10mm according to actual requirements, so that the horizontal gap is matched with the reserved horizontal gap between the lower member steel bar joint 2 and the side wall of the through hole, the requirement of proper displacement between the grouting sleeve 3 and the upper and lower vertical steel bars can be met, the grouting sleeve 3 can be allowed to slightly deflect, and the adaptability of the butt joint position of the vertical steel bars can be better enhanced. That is to say, in the process that the overhanging joint bar 4 of the upper member is inserted into the vertical grouting hole 1 and the grouting sleeve 3 which are filled with grout, the grouting sleeve 3 can be properly displaced with the upper and lower vertical steel bars, or the grouting sleeve 3 slightly deflects to better adapt to the butt joint position, and the steel bar displacement and the sleeve deflection are generated along with the butt joint process of the vertical steel bars, so that the joint bar joint has good self-adaptability, manual detection and adjustment are not needed, one-time butt joint installation of the vertical steel bars of the same joint can be ensured, and the accuracy and the smoothness of the joint installation are improved.
In this embodiment, the end-sealed inner wall of the grouting sleeve 3 is provided with a pressure-bearing fixing member 8 for fixedly connecting the lower member steel bar joint 2, and the grouting sleeve 3 and the pressure-bearing fixing member 8 have horizontal movement displacement therebetween. The vertical steel bar of the upper member is anchored by grouting material and the sleeve, and the steel bar of the lower member is anchored by a pressure-bearing fixing piece 8 and the end sealing of the grouting sleeve 3; the end sealing adopts the end plate, sets up the via hole on the end plate and is used for lower component steel bar joint 2 to pass the anchor of via hole pressure-bearing mounting 8 and grout sleeve 3. The horizontal section of the pressure-bearing fixing piece 8 is larger than the arrangement of the through hole 5 of the sealing end of the grouting sleeve 3, the pressure-bearing fixing piece 8 is placed on the inner surface of the sealing end of the grouting sleeve 3 and is in contact connection without a fixed connection relation, and the grouting sleeve 3 and the pressure-bearing fixing piece 8 have a horizontal gap, so that under the action of an external force generated by the self-flow of mortar 10 and the butt joint of reinforcing steel bars, the mortar sleeve can be properly displaced with the upper and lower vertical reinforcing steel bars.
In this embodiment, the pressure-bearing fixing member 8 is a nut screwed to the lower member steel bar joint 2; simple structure, it is fixed to be convenient for install.
In the embodiment, a pressure-bearing spring 9 is arranged between the bottom of the vertical grouting hole 1 and the sealing end of the grouting sleeve 3; the pressure-bearing spring 9 is arranged at the bottom 11 of the vertical grouting hole 1 and wound on the lower member steel bar joint 2 between the bottom of the vertical grouting hole 1 and the end sealing of the grouting sleeve 3, so that the end sealing of the end of the grouting sleeve 3 is in close contact with the pressure-bearing fixing piece 8 (nut) in the grouting sleeve 3.
In this embodiment, the bore of the grout sleeve 3 gradually increases toward the inner diameter of the sleeve end cap, so that the smoothness of the overhanging joint rebar connector 4 inserted into the grout sleeve 3 filled with mortar can be improved, and more importantly, the pullout resistance of the overhanging joint rebar connector 4 can be enhanced after the mortar is solidified through the structure.
In this embodiment, the pressure-bearing spring 9 is coaxially disposed with the lower member steel bar joint 2. The installation and the fixation of the pressure bearing spring 9 are convenient.
The invention also discloses a construction method of the assembling type vertical component connecting structure with the adjustable transverse position, which comprises the following steps:
a. prefabricating a vertical component, and arranging a vertical grouting hole 1 in a lower component;
b. hoisting the lower component according to the designed elevation and installing a grouting sleeve 3 in the vertical grouting hole 1;
c. and (3) hoisting the upper component, moving the upper component downwards after grouting the vertical grouting holes 1 and the grouting sleeves 3 of the same component node, and inserting the overhanging connecting steel bar joint 4 of the upper component into the grouting sleeve 3 of the lower component. The method simplifies the connection mode of the vertical components in the existing fabricated concrete structure, is completely different from the grouting process of the traditional connecting sleeve, achieves the purpose of effectively connecting the stressed reinforcing steel bars, can ensure that the connection range of the stressed reinforcing steel bars is full of bonding grout, and greatly simplifies the monitoring method of the engineering quality.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. The utility model provides a horizontal position adjustable assembled vertical member connection structure which characterized in that: including setting up in the vertical grout hole of component down, setting up in downthehole lower component steel bar joint and grout sleeve of vertical grout and set up in the overhanging connecting reinforcement joint of last component, in component steel bar joint passes grout sleeve dead-end via hole and is fixed in grout sleeve with the axial and reserves horizontal clearance's mode between component steel bar joint and the via hole lateral wall down, along vertical grout hole trompil end after grout downwards overhanging connecting reinforcement joint axial downwards insert grout sleeve in with lower component steel bar joint butt joint.
2. The fabricated vertical member connection structure adjustable in lateral position according to claim 1, characterized in that: the grout sleeve is characterized in that a grout opening of the grout sleeve is coaxial with the grout sleeve, and the extending connecting steel bar joint is inserted into the grout sleeve along the grout opening of the grout sleeve.
3. The fabricated vertical member connection structure adjustable in lateral position according to claim 1, characterized in that: and a horizontal pre-gap is reserved between the grouting sleeve and the inner side wall of the vertical grouting hole before grouting.
4. The fabricated vertical member connection structure adjustable in lateral position according to claim 2, characterized in that: and the grouting sleeve end-sealed inner wall is provided with a pressure-bearing fixing piece for fixedly connecting a lower member steel bar joint, and the grouting sleeve and the pressure-bearing fixing piece are horizontally moved and displaced.
5. The fabricated vertical member connection structure adjustable in lateral position according to claim 4, wherein: the pressure-bearing fixing piece is a nut in threaded connection with the lower member steel bar joint.
6. The fabricated vertical member connection structure adjustable in lateral position according to claim 5, wherein: and a pressure-bearing spring is arranged between the bottom of the vertical grouting hole and the end seal of the grouting sleeve.
7. The fabricated vertical member connection structure adjustable in lateral position according to claim 6, wherein: the pressure-bearing spring and the lower member steel bar joint are coaxially arranged.
8. The fabricated vertical member connection structure adjustable in lateral position according to claim 1, characterized in that: the inner diameter of the grouting sleeve opening is gradually increased towards the end sealing of the sleeve.
9. The construction method of the fabricated vertical member connection structure with an adjustable lateral position according to claim 1, characterized in that: the method comprises the following steps:
a. prefabricating a vertical component, and arranging a vertical grouting hole on a lower component;
b. hoisting the lower component according to the designed elevation and installing a grouting sleeve in the vertical grouting hole;
c. and hoisting the upper component, moving the upper component downwards after grouting to the vertical grouting hole and the grouting sleeve of the same component node so that the overhanging connecting steel bar joint of the upper component is inserted into the grouting sleeve of the lower component.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845947.8A CN111997204B (en) | 2020-08-20 | 2020-08-20 | Transverse position-adjustable assembled vertical component connecting structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845947.8A CN111997204B (en) | 2020-08-20 | 2020-08-20 | Transverse position-adjustable assembled vertical component connecting structure and construction method thereof |
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| CN111997204A true CN111997204A (en) | 2020-11-27 |
| CN111997204B CN111997204B (en) | 2021-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182506A (en) * | 2022-07-14 | 2022-10-14 | 上海市城市建设设计研究总院（集团）有限公司 | Prefabricated part with self-adaptive steel bar deflection sleeve |
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