CN114856030A - Prefabricated side wall board and prefabricated plate's connected node - Google Patents
Prefabricated side wall board and prefabricated plate's connected node Download PDFInfo
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- CN114856030A CN114856030A CN202210640688.4A CN202210640688A CN114856030A CN 114856030 A CN114856030 A CN 114856030A CN 202210640688 A CN202210640688 A CN 202210640688A CN 114856030 A CN114856030 A CN 114856030A
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- prefabricated
- side wall
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- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- 239000004567 concrete Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- 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
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B2001/6195—Connections for building structures in general of slab-shaped building elements with each other the slabs being connected at an angle, e.g. forming a corner
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
The invention discloses a connecting node of a prefabricated side wall plate and a prefabricated plate, which comprises a prefabricated side wall, wherein an L-shaped overhanging end is arranged at the upper part of the prefabricated side wall, a bracket structure is formed by extending the side surface of the prefabricated side wall, a horizontal prefabricated top plate is lapped on the bracket structure at the overhanging end at the top of the prefabricated side wall, a horizontal prefabricated middle plate is lapped on the bracket structure at the middle overhanging end of the prefabricated side wall, and the horizontal prefabricated top plate and the horizontal prefabricated middle plate are both post-cast with UHPC (ultra high Performance concrete) at the bottom of a space formed by the L-shaped overhanging end bracket structure. This prefabricated side wall board and prefabricated plate's connected node uses UHPC through the node, has super high durability and mechanical properties, but the reinforcing bar overlap joint length between shortened side wall board and the prefabricated plate reduces the pouring volume of post-cast section, dwindles the length of the bracket structure of prefabricated side wall simultaneously, makes things convenient for the mould of mill to make, convenient component industrialization, standardized prefabricated production, and the mould is made simply, the effective control cost.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a connecting node of a prefabricated side wall plate and a prefabricated plate.
Background
Concrete elements or parts produced by prefabrication in factories are increasingly used in the civil engineering field in such a manner that they are transported to construction sites to be connected by reinforcing bars, connectors or prestressing and cast-in-place concrete to form an integral structure.
The assembly of prefabricated components or parts to the field, in order to achieve a rigid connection, nodal connections are a critical issue, and the integrity and stability of the connected nodes has always been an important concern in fabricated structures. However, in the construction process, in order to increase the node rigidity, the reserved steel bars at the joints of the prefabricated parts are dense, the steel bars are densely overlapped in the node area, and the steel bars are crowded, so that the construction is difficult, and the pouring quality of the node area is influenced; simultaneously, in order to strengthen the anti-fatigue capacity of the connecting node, the lap joint length of the cantilever end of the prefabricated wall must be lengthened, so that the size of the bracket is overlarge, and certain difficulty is brought to the manufacture of prefabricated parts. The ultra-high performance concrete (UHPC) is an ultra-high performance concrete cement-based composite material, and compared with the common high-strength concrete, the UHPC has better ductility and higher tensile strength and compressive strength. Therefore, the UHPC material is used for connecting post-cast parts of the node members, the strength of the connecting section is enhanced, and the novel technology for connecting the nodes of the prefabricated members becomes.
In order to enhance the node rigidity, reduce the manufacturing difficulty of prefabricated components and facilitate better lap joint of a prefabricated side wall plate and a prefabricated plate, the invention provides a novel connecting node of the prefabricated side wall plate and the prefabricated plate, wherein a UHPC material is adopted for node treatment, and nodes are reasonably modified and optimized to have excellent working performance and economy, thereby providing an assembly type node connecting mode which reduces the on-site lap joint length, has high strength, strong durability and good economic benefit.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a connecting node of a prefabricated side wall panel and a prefabricated panel, which solves the rigidity problem and the fatigue resistance of the connecting node of the prefabricated side wall panel and the prefabricated panel in an assembled structure and provides the connecting node of the prefabricated side wall panel and the prefabricated panel by adopting UHPC. The mode through post-cast UHPC and pre-buried reinforcing bar connecting piece combination can ensure to guarantee to have sufficient economic nature when obtaining better bearing capacity, through reducing reinforcing bar overlap joint length and can not too much lengthening the size of prefabricated side wall cantilever end overlap joint bracket, makes things convenient for the problem of prefabricated side wall batch production preparation.
In order to achieve the purpose, the invention is realized by the following technical scheme: a connecting node of a prefabricated side wall plate and a prefabricated plate comprises a prefabricated side wall, wherein an L-shaped overhanging end is arranged at the upper part of the prefabricated side wall, a bracket structure is formed by extending the side surface of the prefabricated side wall, a horizontal prefabricated top plate is lapped on the bracket structure at the overhanging end at the top of the prefabricated side wall, a horizontal prefabricated middle plate is lapped on the bracket structure at the middle overhanging end of the prefabricated side wall, and UHPC (ultra high performance concrete) is poured behind the horizontal prefabricated top plate and the horizontal prefabricated middle plate and the bottom of a space formed by the L-shaped overhanging end bracket structure; the construction method of the connection node specifically comprises the following steps:
s1, prefabricating an L-shaped overhanging end at the upper part of the side wall, wherein the L-shaped overhanging end comprises a longitudinal steel bar and a reserved hole, the longitudinal steel bar can be vertically staggered with a transverse steel bar of a horizontal prefabricated top plate or a horizontal prefabricated middle plate and then poured and connected, and a steel bar connecting device is pre-buried in the reserved hole, so that the side wall can be conveniently prefabricated to connect with a dowel bar;
and S2, when the nodes are connected, inserting steel bars into holes at the bottom ends of the extending arms of the L-shaped overhanging ends at the upper parts of the prefabricated side walls, connecting the steel bars to the side walls through steel bar connecting devices, and overlapping the other ends of the inserting bars with the steel bars of the horizontal prefabricated top plates or the horizontal prefabricated middle plates.
S3, post-pouring UHPC (ultra high performance concrete) at the bottom of a space formed by the horizontal prefabricated top plate and the L-shaped cantilever end bracket structure, and pouring common concrete at the upper part of the space;
preferably, the overlapping length of the steel bars in the S3 is 10-15 times of the diameter of the steel bars.
Preferably, the reinforcing steel bar connecting device can be a reinforcing steel bar connector, a reinforcing steel bar sleeve and other mechanical connecting devices.
Preferably, the L-shaped overhanging end on the upper part of the prefabricated side wall vertically extends upwards to form an extending arm, when the cast-in-place top layer is poured, the extending arm is directly used as a template, the template is free of support, the inner side of the extending arm is of a concave-convex key groove structure, and the shearing resistance of the node is enhanced.
Preferably, the lap joint area of the prefabricated side wall and the node steel bars of the horizontal prefabricated top plate and the horizontal prefabricated middle plate is poured by UHPC slurry, and the slurry pouring height is 2-5 times of the diameter of the steel bars.
Preferably, both ends of the horizontal prefabricated top plate and the horizontal prefabricated middle plate are of key groove structures, and horizontal lap-joint steel bars are reserved at both ends of the horizontal prefabricated top plate and the horizontal prefabricated middle plate.
Advantageous effects
The invention provides a connecting node of a prefabricated side wall plate and a prefabricated plate. Compared with the prior art, the method has the following beneficial effects:
(1) this prefabricated lateral wall board and prefabricated plate's connected node uses UHPC through the node, has super high durability and mechanical properties, but the reinforcing bar overlap joint length between shortened lateral wall board and the prefabricated plate reduces the pouring volume of post-cast section, dwindles the length of the bracket structure of prefabricated lateral wall simultaneously, makes things convenient for the mould of mill to make, convenient component industrialization, standardized prefabricated production, the mould is made simply, the effective control cost.
(2) The prefabricated side wall plate and the prefabricated plate are connected through the connecting joint, the exposed steel bars of the prefabricated side wall plate are few, and even the steel bars can not be leaked, so that the production, storage, transportation and installation of components are facilitated. The inserted bars can be connected on site through the steel bar connecting devices pre-buried in the reserved holes, and the prefabricated wall and the prefabricated plate can be installed quickly. The L-shaped overhanging end of the side wall is prefabricated, and the extending arm can be used as a template during pouring, so that the template-free and support-free construction is realized.
(3) This prefabricated lateral wall board and precast slab's connected node, through watering regional both sides board behind the node and all adopt the keyway structure, the notch links up firmly behind the concreting, and reinforcing node shear capacity ensures concrete continuity and whole caking property. The mode of UHPC and ordinary concrete combination can ensure to have sufficient economic nature when obtaining better bearing capacity, guarantees simultaneously that the member post-cast node connection is not the weak link of structure, has solved the fundamental problem that prefabricated assembly structure passed power.
Drawings
FIG. 1 is a perspective view of the external structure of the present invention;
FIG. 2 is an enlarged view of the joint of the horizontal prefabricated top plate and the prefabricated side wall according to the invention;
FIG. 3 is an enlarged view of the joint of the horizontal prefabricated middle plate and the prefabricated side wall according to the invention.
In the figure: 1-prefabricated side wall, 2-horizontal prefabricated top plate, 3-horizontal prefabricated middle plate and 4-steel bar connecting device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a connecting node of a prefabricated side wall plate and a prefabricated plate comprises a prefabricated side wall 1, wherein an L-shaped overhanging end is arranged at the upper part of the prefabricated side wall 1, a bracket structure is formed by extending the side surface of the prefabricated side wall 1, a horizontal prefabricated top plate 2 is lapped on the bracket structure at the overhanging end at the top of the prefabricated side wall 1, a horizontal prefabricated middle plate 3 is lapped on the bracket structure at the middle overhanging end of the prefabricated side wall 1, and UHPC (ultra high performance concrete) is poured behind the horizontal prefabricated top plate 2 and the horizontal prefabricated middle plate 3 and the bottom of a space formed by the L-shaped overhanging end bracket structure; the construction method of the connection node specifically comprises the following steps:
s1, prefabricating an L-shaped overhanging end at the upper part of the side wall 1, wherein the L-shaped overhanging end comprises a longitudinal steel bar and a reserved hole, the longitudinal steel bar can be vertically staggered with a transverse steel bar of the horizontal prefabricated top plate 2 or the horizontal prefabricated middle plate 3 and then poured and connected, and a steel bar connecting device 4 is pre-embedded in the reserved hole, so that the prefabricated side wall 1 can be conveniently connected with a dowel bar;
s2, when the nodes are connected, inserting steel bars into holes at the bottom ends of the extending arms of the L-shaped overhanging ends at the upper part of the prefabricated side wall 1, connecting the holes to the side wall through steel bar connecting devices 4, and overlapping the other ends of the inserting steel bars with the steel bars of the horizontal prefabricated top plate 2 or the horizontal prefabricated middle plate 3.
S3, pouring UHPC after the bottom of a space formed by the horizontal prefabricated top plate 2 and an L-shaped overhanging end bracket structure, pouring common concrete on the upper part, wherein the lapping length of the steel bars in S3 is 10-15 times of the diameter of the steel bars, the steel bar connecting device 4 can be a steel bar connector, a steel bar sleeve and other mechanical connecting devices, the L-shaped overhanging end on the upper part of the prefabricated side wall 1 vertically extends upwards to form an extending arm, when the cast-in-place top layer is poured, the extending arm directly serves as a template without supporting the template, the inner side of the extending arm is of a concave-convex key groove structure, the shearing resistance of a node is enhanced, the lapping area of the node steel bars of the prefabricated side wall 1, the horizontal prefabricated top plate 2 and the horizontal prefabricated middle plate 3 is poured through UHPC slurry, the slurry pouring height is 2-5 times of the diameter of the steel bars, the two ends of the horizontal prefabricated top plate 2 and the horizontal prefabricated middle plate 3 are both key groove structures, and the horizontal lapping steel bars are reserved at the two ends of the horizontal prefabricated top plate 2 and the horizontal prefabricated middle plate 3, when the prefabricated top plate 2 or the prefabricated middle plate 3 is thicker, a laminated slab is selected, UHPC is poured at a node firstly, and then ordinary concrete is poured, so that the using amount of UHPC is reduced.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a prefabricated side wall board and connected node of prefabricated plate, includes prefabricated side wall (1), the upper portion of prefabricated side wall (1) has the L type and encorbelments the end, and the side extension forms the bracket structure, prefabricated side wall (1) top encorbelments the end bracket and constructs the overlap joint and have horizontal prefabricated roof (2), prefabricated side wall (1) middle part encorbelments the end bracket and constructs the overlap joint and have horizontal prefabricated medium plate (3), its characterized in that: the horizontal prefabricated top plate (2) and the horizontal prefabricated middle plate (3) are both in post-pouring with UHPC (ultra high performance concrete) at the bottom of a space formed by the L-shaped cantilever end bracket structure;
the construction method of the connection node specifically comprises the following steps:
s1, prefabricating an L-shaped overhanging end at the upper part of the side wall (1), wherein the L-shaped overhanging end comprises a longitudinal steel bar and a reserved hole, the longitudinal steel bar can be vertically staggered with a transverse steel bar of the horizontal prefabricated top plate (2) or the horizontal prefabricated middle plate (3) and then poured and connected, and a steel bar connecting device (4) is embedded in the reserved hole, so that the prefabricated side wall (1) can be conveniently connected with a joint bar;
s2, when the nodes are connected, inserting steel bars into holes at the bottom ends of the extending arms of the L-shaped overhanging ends at the upper parts of the prefabricated side walls (1), connecting the holes to the side walls through steel bar connecting devices (4), and overlapping the other ends of the steel bars with the steel bars of the horizontal prefabricated top plates (2) or the horizontal prefabricated middle plates (3).
S3, post-pouring UHPC (ultra high performance concrete) at the bottom of a space formed by the horizontal prefabricated top plate (2) and the L-shaped cantilever end bracket structure, and pouring common concrete at the upper part.
2. A prefabricated wall panel to prefabricated panel connection node according to claim 1, wherein: the overlapping length of the steel bars in the S3 is 10-15 times of the diameter of the steel bars.
3. A prefabricated wall panel to prefabricated panel connection node according to claim 1, wherein: the steel bar connecting device (4) can be a steel bar connector, a steel bar sleeve and other mechanical connecting devices.
4. A prefabricated wall panel to prefabricated panel connection node according to claim 1, wherein: the L-shaped overhanging end on the upper part of the prefabricated side wall (1) vertically and upwards extends to form an extending arm, when the cast-in-place top layer is poured, the extending arm is directly used as a template, the template is free from supporting, the inner side of the extending arm is of a concave-convex key groove structure, and the shearing resistance of the node is enhanced.
5. A prefabricated wall panel to prefabricated panel connection node according to claim 1, wherein: and the lap joint area of the prefabricated side wall (1) and the node steel bars of the horizontal prefabricated top plate (2) and the horizontal prefabricated middle plate (3) is poured by UHPC slurry, and the slurry pouring height is 2-5 times of the diameter of the steel bars.
6. A prefabricated wall panel to prefabricated panel connection node according to claim 1, wherein: the two ends of the horizontal prefabricated top plate (2) and the horizontal prefabricated middle plate (3) are both of a key groove structure, and horizontal lap joint reinforcing steel bars are reserved at the two ends of the horizontal prefabricated top plate (2) and the two ends of the horizontal prefabricated middle plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640688.4A CN114856030A (en) | 2022-06-08 | 2022-06-08 | Prefabricated side wall board and prefabricated plate's connected node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640688.4A CN114856030A (en) | 2022-06-08 | 2022-06-08 | Prefabricated side wall board and prefabricated plate's connected node |
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| CN114856030A true CN114856030A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210640688.4A Pending CN114856030A (en) | 2022-06-08 | 2022-06-08 | Prefabricated side wall board and prefabricated plate's connected node |
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| CN (1) | CN114856030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118148260A (en) * | 2024-05-13 | 2024-06-07 | 北京市建筑工程研究院有限责任公司 | Dry-type connection structure and connection method for cantilever component and vertical component |
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Application publication date: 20220805 |