CN116290346A - Limited slip connection structure and construction method of connection structure - Google Patents

Limited slip connection structure and construction method of connection structure Download PDF

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Publication number
CN116290346A
CN116290346A CN202310429634.8A CN202310429634A CN116290346A CN 116290346 A CN116290346 A CN 116290346A CN 202310429634 A CN202310429634 A CN 202310429634A CN 116290346 A CN116290346 A CN 116290346A
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CN
China
Prior art keywords
limited slip
precast
stud
flexible sleeve
slab
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Pending
Application number
CN202310429634.8A
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Chinese (zh)
Inventor
聂鑫
庄亮东
赵宇鹏
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Tsinghua University
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Tsinghua University
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Publication date
Application filed by Tsinghua University filed Critical Tsinghua University
Priority to CN202310429634.8A priority Critical patent/CN116290346A/en
Publication of CN116290346A publication Critical patent/CN116290346A/en
Pending legal-status Critical Current

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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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • 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
    • E04B1/58—Connections for building structures in general of bar-shaped building elements
    • 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
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • 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
    • 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
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • 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
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1957—Details of connections between nodes and struts
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1975—Frameworks where the struts are directly connected to each other, i.e. without interposed connecting nodes or plates
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1993—Details of framework supporting structure, e.g. posts or walls

Abstract

The invention relates to the technical field of structural engineering and discloses a limited slip connection structure and a construction method of the connection structure. The limited slip connection structure can provide proper slip amount, effectively reduce the tensile stress of the concrete slab, and improve the long-term performance and durability of the concrete slab. Meanwhile, the limited slip connecting structure also has the anti-lifting function to resist the separation and lifting of the concrete plates, reduces the partial section shear force sudden increase caused by the excessive release combination function, and improves the stress state of the concrete plates at the transition section.

Description

Limited slip connection structure and construction method of connection structure
Technical Field
The invention relates to the technical field of structural engineering, in particular to a limited slip connection structure and a construction method of the connection structure.
Background
In composite frame structures, the composite beam is comprised of steel beams and concrete slabs, which are typically connected by a bolted connection. Under the action of external force, the combined frame structure can generate longitudinal shearing force, namely, the steel-concrete interface in the combined beam generates shearing force along the longitudinal direction of the member, and under the general stress state, the longitudinal sliding between the steel beam and the concrete slab is completely limited, so that the concrete in the hogging moment area is pulled to crack. In addition, in the long-term service process of the combined frame structure, tensile stress can be generated in the concrete under the action of temperature change and in the shrinkage and creep processes, and the concrete can not be released due to the limiting action of the studs, so that the long-term performance of the concrete is reduced.
In the related art, there is a need to solve the problem of how to provide a slip space to improve the crack resistance in the hogging moment region and reduce the sudden increase of the shear force in the connection construction change section in the steel-concrete composite frame structure and the concrete-concrete composite frame structure.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. For this reason, embodiments of the present invention provide a limited slip joint structure capable of providing an appropriate amount of slip, effectively reducing tensile stress of a concrete slab, and improving long-term performance and durability of the concrete slab, and a construction method of the joint structure. Meanwhile, the limited slip connecting structure also has the anti-lifting function to resist the separation and lifting of the concrete plates, reduces the partial section shear force sudden increase caused by the excessive release combination function, and improves the stress state of the concrete plates at the transition section.
The limited slip connection configuration of the present invention includes:
a prefabricated plate;
a concrete slab provided on the precast slab;
the welding nails are positioned in the concrete slab and comprise nail columns and nail heads arranged at one ends of the nail columns, and the other ends of the nail columns are connected with the precast slabs;
the flexible sleeve is sleeved on the nail column.
According to the limited slip joint construction of the present invention, the limited slip joint construction can provide an appropriate amount of slip, effectively reduce tensile stress of the concrete slab, and improve long-term performance and durability of the concrete slab. Meanwhile, the limited slip connecting structure also has the anti-lifting function to resist the separation and lifting of the concrete plates, reduces the partial section shear force sudden increase caused by the excessive release combination function, and improves the stress state of the concrete plates at the transition section. In addition, the limited slip connection structure has the advantages of convenience in material acquisition, simplicity in structure, convenience in construction, reasonable stress and the like, and has good economic and technical benefits.
Optionally, the prefabricated plate is a steel plate.
Optionally, the precast slab is a precast concrete slab or a precast concrete beam, and the precast concrete slab or the precast concrete beam is provided with a preformed hole which is mutually matched with a part of the spike column.
Optionally, the flexible sleeve is provided with an opening penetrating through the flexible sleeve along the wall thickness direction, and the opening has a preset length in the length direction of the nail column.
Optionally, the wall surface of the opening comprises a first side surface and a second side surface which are oppositely arranged in the circumferential direction of the flexible sleeve, the first side surface is provided with a plurality of first protrusions protruding towards the second side surface, the second side surface is provided with a plurality of second protrusions protruding towards the first side surface, and the first protrusions and the second protrusions are sequentially staggered along the length direction of the nail column.
Optionally, the first protrusion and the second protrusion are each in a pointed shape; or (b)
The first protrusion and the second protrusion are rectangular.
Optionally, the cross-sectional area of the end of the flexible sleeve remote from the head is gradually enlarged in a direction away from the head.
Optionally, a fillet or chamfer is provided on a side of the head remote from the post.
Optionally, the flexible sleeve is a plastic tube or a rubber tube.
Optionally, a spherical protrusion is arranged at the other end of the nail column.
Optionally, the length direction of the spike is parallel to the thickness direction of the concrete slab.
Optionally, the limited slip connection configuration is applied to a negative bending moment region of the composite beam member.
The construction method of the connection structure of the present invention is the connection structure with limited slip, and the construction method comprises the steps of:
connecting a plurality of welding nails to the precast slab according to preset positions of the welding nails;
sleeving the flexible sleeve on the welding nails on the precast slab;
binding steel bars on the precast slabs, and then pouring concrete.
Optionally, the prefabricated plate is a steel plate, and the other end of the stud of the welding stud is welded to the steel plate.
Optionally, the precast slab is a precast concrete slab or a precast concrete beam, and the other end of the stud of the welding stud is implanted into the preformed hole.
Drawings
FIG. 1 is a schematic illustration of a limited slip connection configuration of an embodiment of the present invention.
FIG. 2 is another schematic illustration of a limited slip connection configuration of an embodiment of the present invention.
FIG. 3 is a schematic view of a weld stud mated with a flexible sleeve in accordance with an embodiment of the invention.
Fig. 4 is another schematic view of the engagement of the weld stud with the flexible sleeve in accordance with an embodiment of the present invention.
Fig. 5 is a schematic view of a stud according to an embodiment of the invention.
Fig. 6 is another schematic view of the stud of an embodiment of the present invention.
FIG. 7 is a schematic view of a composite beam member of an embodiment of the present invention.
Reference numerals: 1-precast slabs, 11-steel slabs, 12-precast concrete slabs, 13-precast concrete beams, 2-concrete slabs, 3-welding nails, 31-nail columns, 32-nail heads, 33-fillets, 34-fillets, 4-flexible sleeves, 41-openings, 42-first sides, 43-second sides, 44-first protrusions, 45-second protrusions, a-preformed holes, A-composite beam members, B-positive bending moment areas and C-negative bending moment areas.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The limited slip connection configuration of the embodiment of the present invention is described below with reference to the drawings. As shown in fig. 1, the limited slip joint structure of the present invention comprises a precast slab 1, a concrete slab 2, a welding nail 3 and a flexible sleeve 4, wherein the concrete slab 2 is arranged on the precast slab 1, the welding nail 3 is positioned in the concrete slab 2, the welding nail 3 comprises a nail column 31 and a nail head 32 arranged at one end of the nail column 31, the other end of the nail column 31 is connected with the precast slab 1, and the flexible sleeve 4 is sleeved on the nail column 31.
According to the limited slip joint construction of the present invention, the limited slip joint construction can provide an appropriate amount of slip, effectively reduce the tensile stress of the concrete slab 2, and improve the long-term performance and durability of the concrete slab 2. At the same time, the limited slip connection structure also has anti-lifting function to resist the separation and lifting of the concrete plate 3, and reduces the partial section shear force sudden increase caused by the excessive release combination function, thereby improving the stress state of the concrete plate 2 at the transition section. In addition, the limited slip connection structure has the advantages of convenience in material acquisition, simple structure, convenience in construction, reasonable loading, and good economic and technical benefits.
As shown in fig. 1 to 7, in order to make the technical solution of the present application easier to understand, the technical solution of the present application will be described in more detail below with a specific embodiment of a limited slip connection structure.
The limited slip joint construction of the present application comprises a prefabricated panel 1, a concrete panel 2, a welding stud 3 and a flexible sleeve 4.
In some embodiments, as shown in fig. 1, the prefabricated panel 1 may be a steel plate 11, the concrete slab 2 is located on the steel plate 11, the steel plate 11 and the concrete slab 2 are connected through the welding nails 3, and the welding nails 3 can connect the steel plate 11 and the concrete slab 2 together, so that the connection structure (the combination of the steel plate 11 and the concrete slab 2) is firmer.
In some embodiments, as shown in fig. 2, the precast slab 1 is a precast concrete slab 12 or a precast concrete beam 13, and the precast concrete slab 12 or the precast concrete beam 13 is provided with a preformed hole a in which the welding nails 3 are mutually matched, so that the welding nails 3 can be conveniently implanted into the preformed hole a, and the connection between the welding nails 3 and the precast concrete slab 12 or the precast concrete beam 13 is ensured to be more stable. At the same time, the precast concrete panel 12 or the precast concrete beam 13 is connected with the concrete panel 2 through the welding nails 3, so that the precast concrete panel 12 or the precast concrete beam 13 and the concrete panel 2 can be further stable.
In some embodiments, as shown in fig. 1 to 6, the welding pin 3 includes a pin 31 and a pin head 32 provided at one end of the pin 31, and the other end of the pin 31 is connected to the prefabricated panel 1. Wherein the welding nails 3 are positioned in the concrete slab 2, namely, the nail heads 32 are positioned in the concrete slab 2, and the nail heads 32 have the anti-lifting function, can resist the separation or lifting of the concrete slab 2 from the precast slab 1, reduce the section shear force sudden increase caused by the excessive release combination function, and improve the stress state of the concrete slab 2 at the transition section.
In some embodiments, the welding pin 3 is fixed to the steel plate 11 by welding.
In some embodiments, as shown in fig. 5 and 6, the side of the stud 32 remote from the post 31 is provided with a fillet 33 or chamfer 34, which fillet 33 or chamfer 34 ensures a smoother fit of the flexible sleeve 4 over the stud 3 and also prevents damage to the flexible sleeve 4 by the stud 32.
In some embodiments, as shown in FIG. 5, the rounded corners 33 on the head 32 are rounded.
In some embodiments, as shown in FIG. 6, chamfer 34 on head 32 is chamfered with a chamfer size of 5mm.
In some embodiments, the other end of the post 31 is provided with a spherical protrusion. When welding the welding nail 3, the spherical bulge is convenient for welding ignition, which is favorable for penetration welding.
In some embodiments, the diameter of the spherical protrusion on the stud 3 is 2-3mm.
In some embodiments, as shown in fig. 6, the length of the spike 31 is parallel to the thickness of the concrete slab.
In some embodiments, as shown in fig. 1 to 6, the flexible sleeve 4 is sleeved on the stud 31, and the flexible sleeve 4 can provide flexible connection between the precast slab 1 and the concrete slab 2, so as to provide a proper sliding amount between the precast slab 1 and the concrete slab 2, effectively reduce the tensile stress of the concrete slab 2, and improve the long-term performance and durability of the concrete slab 2. That is, when the precast slab 1 and the concrete slab 2 are simultaneously stressed, the concrete slab 2 can relatively slide with respect to the precast slab 1, so that the concrete slab 2 is prevented from being subjected to excessive tensile stress, and the concrete slab 2 is prevented from being damaged.
In some embodiments, as shown in fig. 1 to 4, the flexible sleeve 4 is provided with an opening 41 penetrating the flexible sleeve 4 in the wall thickness direction thereof, and the opening 41 has a predetermined length in the length direction of the post 31. The opening 41 may allow the flexible sleeve 4 to be more conveniently placed over the stud 3.
In some embodiments, the predetermined length of the opening 41 may be smaller than the length of the flexible sleeve 4, the opening 41 is located at one end of the flexible sleeve 4, and the opening 41 may facilitate the sleeve of the flexible sleeve 4 over the welding nail 3.
Preferably, the predetermined length of the opening 41 is equal to the length of the flexible sheath 4, i.e. the opening 41 corresponds to the cut-out of the flexible sheath 4.
In some embodiments, as shown in fig. 1 to 4, the wall surface of the opening 41 includes a first side surface 42 and a second side surface 43 which are disposed opposite to each other in the circumferential direction of the flexible sleeve 4, the first side surface 42 is provided with a plurality of first protrusions 44 protruding toward the second side surface 43, the second side surface 42 is provided with a plurality of second protrusions 45 protruding toward the first side surface 41, and the plurality of first protrusions 44 and the plurality of second protrusions 45 are sequentially staggered along the length direction of the post 31, so that the flexible sleeve 4 located in the opening 41 can be prevented from being dislocated with each other.
In some embodiments, as shown in fig. 3, the first projection 44 and the second projection 45 are each tine-shaped.
In some embodiments, as shown in fig. 4, the first protrusion 44 and the second protrusion 45 are each rectangular in shape.
In some embodiments, as shown in fig. 5 and 6, the cross-sectional area of the end of the flexible sleeve 4 distal from the stud 32 gradually expands in a direction away from the stud 32. That is, one end of the flexible sleeve 4 is horn-shaped, and the horn-shaped flexible sleeve 4 can be more conveniently sleeved on the welding nail 3.
In some embodiments, as shown in fig. 5 and 6, the flexible sleeve 4 is a plastic or rubber tube.
In some embodiments, as shown in FIG. 7, a limited slip connection configuration is applied to the hogging moment region C of the composite beam-type component A. The composite beam member A includes a positive bending moment region B and a negative bending moment region C. Furthermore, the connection construction has a certain longitudinal stiffness allowing limited longitudinal sliding, so that there is limited relative sliding space on both sides of the interface of the composite beam member a, while also preventing lifting of the concrete slab 2.
The construction method of the connection structure of the present invention is the above-described limited slip connection structure, wherein the construction method includes:
connecting a plurality of welding nails 3 to the prefabricated panel 1 according to preset positions of the welding nails 3;
then the flexible sleeve 4 is sleeved on the welding nails 3 on the precast slab 1;
binding steel bars on the precast slab 1, and then pouring concrete.
Specifically, the prefabricated panel 1 is a steel panel 11, and the other end of the stud 31 of the welding stud 3 is welded to the steel panel 11. Welding the welding nails 3 on the steel plate 11 in a factory, installing the steel plate 11 in place on site, coating the welding nails 3 with the flexible sleeve 4, binding reinforcing steel bars on the steel plate 11, and pouring concrete.
Wherein a flexible sleeve 4 having an opening 41 may be wrapped over the stud 3 through the opening 41. Alternatively, the welding pin 3 having the flare may be covered on the welding pin 3 through the flare.
Specifically, the precast slab 1 is a precast concrete slab 12 or a precast concrete beam 13, and the other end of the stud 31 of the stud 3 is implanted into the preformed hole a. The welding nails 3 are planted into the preformed holes a on the precast concrete slab 12 or the precast concrete beam 13 in a factory, after the precast concrete slab 12 or the precast concrete beam 13 is installed in place on site, the welding nails 3 are covered by the flexible sleeve 4, finally, steel bars are bound on the steel plates 11, and concrete is poured.
Wherein a flexible sleeve 4 having an opening 41 may be wrapped over the stud 3 through the opening 41. Alternatively, the welding pin 3 having the flare may be covered on the welding pin 3 through the flare.
The beneficial effects of the invention are as follows:
the flexible sleeve 4 can provide a slip amount suitable for the hogging moment region C, effectively reducing the tensile stress of the concrete slab 2 in the hogging moment region C under the action of using load, temperature load and shrinkage creep, and improving the long-term performance and durability of the concrete slab 2. Meanwhile, the nail heads 32 of the welding nails 3 can effectively prevent the concrete slab 2 from being lifted upwards at the interface of the combined beam type component A, and simultaneously can allow the concrete slab 2 and the precast slab 1 to slide relatively, so that the local shear increase of the transition section caused by excessive release of the combined action is effectively reduced, and the stress state of the concrete slab 2 of the transition section is improved. In addition, the connecting structure has the advantages of convenience in material acquisition, simple structure, convenience in construction and reasonable stress, and has good economic and technical benefits only by sleeving the flexible sleeve 4 on site. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.

Claims (15)

1. A limited slip connection comprising:
a prefabricated plate;
a concrete slab provided on the precast slab;
the welding nails are positioned in the concrete slab and comprise nail columns and nail heads arranged at one ends of the nail columns, and the other ends of the nail columns are connected with the precast slabs;
the flexible sleeve is sleeved on the nail column.
2. The limited slip joint as defined in claim 1, wherein the prefabricated panel is a steel panel.
3. The limited slip joint as defined in claim 1, wherein the precast slab is a precast concrete slab or a precast concrete beam having a preformed hole formed thereon that mates with a portion of the spike.
4. The limited slip coupling structure as claimed in claim 1, wherein the flexible sleeve is provided with an opening penetrating the flexible sleeve in a wall thickness direction thereof, and the opening has a predetermined length in a length direction of the post.
5. The limited slip joint as defined in claim 4, wherein the wall surface of the opening includes a first side surface and a second side surface which are arranged opposite to each other in a circumferential direction of the flexible sleeve, the first side surface being provided with a plurality of first protrusions protruding toward the second side surface, the second side surface being provided with a plurality of second protrusions protruding toward the first side surface, the plurality of first protrusions and the plurality of second protrusions being sequentially staggered in a longitudinal direction of the post.
6. The limited slip connection configuration of claim 5, wherein the first projection and the second projection are each pointed-tooth shaped; or (b)
The first protrusion and the second protrusion are rectangular.
7. The limited slip connection configuration of claim 1, wherein a cross-sectional area of an end of the flexible sleeve distal from the stud is gradually enlarged in a direction away from the stud.
8. The limited slip joint as in claim 7, wherein the side of the stud remote from the post is provided with a fillet or chamfer.
9. The limited slip joint as in any one of claims 1-8, wherein the flexible sleeve is a plastic or rubber tube.
10. The limited slip joint as in any one of claims 1-8, wherein the stud has a spherical protrusion at the other end.
11. The limited slip joint as in any one of claims 1-8, wherein the length direction of the spike is parallel to the thickness direction of the concrete slab.
12. The limited slip joint as in any one of claims 1-8, wherein the limited slip joint is applied to a negative bending moment region of a composite beam member.
13. A construction method of a connection construction, characterized in that the connection construction is a limited slip connection construction according to any one of claims 1-8, the construction method comprising: connecting a plurality of welding nails to the precast slab according to preset positions of the welding nails;
sleeving the flexible sleeve on the welding nails on the precast slab;
binding steel bars on the precast slabs, and then pouring concrete.
14. The method of constructing a joint structure according to claim 13, wherein the prefabricated panel is a steel plate, and the other end of the stud of the welding stud is welded to the steel plate.
15. The method of claim 13, wherein the precast slab is a precast concrete slab or a precast concrete beam, and the other end of the stud of the welding stud is implanted into a preformed hole.
CN202310429634.8A 2023-04-20 2023-04-20 Limited slip connection structure and construction method of connection structure Pending CN116290346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310429634.8A CN116290346A (en) 2023-04-20 2023-04-20 Limited slip connection structure and construction method of connection structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310429634.8A CN116290346A (en) 2023-04-20 2023-04-20 Limited slip connection structure and construction method of connection structure

Publications (1)

Publication Number Publication Date
CN116290346A true CN116290346A (en) 2023-06-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310429634.8A Pending CN116290346A (en) 2023-04-20 2023-04-20 Limited slip connection structure and construction method of connection structure

Country Status (1)

Country Link
CN (1) CN116290346A (en)

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