CN113958049B - Scissor fork type building steel frame and laminated slab connecting structure - Google Patents
Scissor fork type building steel frame and laminated slab connecting structure Download PDFInfo
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- CN113958049B CN113958049B CN202111396987.XA CN202111396987A CN113958049B CN 113958049 B CN113958049 B CN 113958049B CN 202111396987 A CN202111396987 A CN 202111396987A CN 113958049 B CN113958049 B CN 113958049B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 239000004567 concrete Substances 0.000 claims abstract description 21
- 210000002435 tendon Anatomy 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 15
- 239000002131 composite material Substances 0.000 abstract description 11
- 239000011178 precast concrete Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding 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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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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
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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
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B2005/176—Floor structures partly formed in situ with peripheral anchors or supports
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the field of building components, and relates to a scissor-fork type building steel frame and composite slab connecting structure which comprises a prefabricated bottom plate, a cast-in-place concrete layer poured on the prefabricated bottom plate, and a plurality of square steel pipes detachably fixed on the prefabricated bottom plate for supporting; the square steel pipes are longitudinally arranged along the prefabricated bottom plate and are arranged in parallel; one side of the square steel pipe, which is far away from the prefabricated bottom plate, is provided with a square hole, the square steel pipe, which is opposite to the square hole, is provided with a steel pipe hole, and the prefabricated bottom plate, which corresponds to the steel pipe hole, is provided with a bottom plate hole with two through sides; the steel pipe holes and the corresponding bottom plate holes are internally provided with n-shaped embedded parts, scissor-fork type connecting pieces matched with the embedded parts and nuts used for fixing the connecting pieces; the problem of current precast concrete superimposed sheet bottom installation's interim support be not convenient for dismantle and recycle, lead to the construction measure cost to increase, the efficiency of construction is low is solved.
Description
Technical Field
The invention belongs to the field of building components, and relates to a scissor-fork type building steel frame and laminated slab connecting structure.
Background
The concrete laminated slab is an assembled integral construction consisting of a prefabricated prestressed concrete bottom plate (or called a prefabricated bottom plate) and a cast-in-place concrete layer (or called a cast-in-place plate), and has good integrity and shock resistance. The concrete laminated slab saves templates in construction, accelerates construction progress, and reduces engineering cost. At present, the process for manufacturing the concrete composite slab on the construction site comprises the following steps: and (3) paving a prefabricated bottom plate on a construction site, casting concrete on the prefabricated bottom plate in situ, and forming a cast-in-situ plate after the cast-in-situ concrete is solidified to form the prefabricated concrete composite slab.
Whole precast concrete superimposed sheet leads to prefabricated coincide floor easy rupture in transportation and hoist and mount because its dead weight is great, need set up interim support in the construction installation, and current interim support adopts welding or bolt-up's mode to fix with prefabricated bottom plate, and after precast concrete superimposed sheet transported to the assigned position, interim support is not convenient for dismantle and recycle to lead to the construction measure cost to increase, and the efficiency of construction is low.
Disclosure of Invention
In view of the above, the invention provides a scissor-type building steel frame and composite slab connecting structure, which aims to solve the problems that a temporary support installed at the bottom of an existing precast concrete composite slab is inconvenient to disassemble and recycle, so that construction measure cost is increased and construction efficiency is low.
In order to achieve the purpose, the invention provides the following technical scheme:
a scissor-fork type building steel frame and laminated slab connecting structure comprises a prefabricated bottom plate, a cast-in-place concrete layer poured on the prefabricated bottom plate and a plurality of square steel pipes detachably fixed on the prefabricated bottom plate and playing a supporting role; the square steel pipes are longitudinally arranged along the prefabricated bottom plate and are arranged in parallel. One side of the square steel pipe, which is far away from the prefabricated bottom plate, is provided with a square hole, the square steel pipe, which is right opposite to the square hole, is provided with a steel pipe hole, and the prefabricated bottom plate, which corresponds to the steel pipe hole, is provided with a bottom plate hole with two through sides; and the steel pipe holes and the corresponding bottom plate holes are internally provided with n-shaped embedded parts, scissor-fork type connecting pieces matched with the embedded parts and nuts for fixing the connecting pieces.
Further, the embedded part comprises a cylindrical embedded part cylinder body, a circular bottom plate and an annular plate, wherein the circular bottom plate is integrally installed at the top of the embedded part cylinder body; a clamping groove is formed in the annular plate on one side of the embedded part barrel body, and the clamping groove is convenient for clamping and fixing with the connecting piece; the connecting piece includes connecting piece stack shell and joint bracing piece each other articulated in the connecting piece stack shell, has offered a plurality ofly on the connecting piece stack shell to the hole that just link up with draw-in groove looks adaptation, and every pair hole corresponds a pair of articulated bracing piece each other, and the mutual articulated position of bracing piece is the platykurtic and rotates and install the pivot, and bracing piece lower extreme integrated into one piece fixed mounting has the handle, and upper end of the support bar integrated into one piece fixed mounting has the dop with the equal adaptation of hole, draw-in groove.
Further, the embedded part comprises a cylindrical embedded part cylinder body, a lifting hole formed in the top of the embedded part cylinder body and an annular plate integrally installed in the middle of the embedded part cylinder body; a clamping groove is formed in the annular plate on one side of the embedded part barrel body, and the clamping groove is conveniently clamped and fixed with the connecting piece; the connecting piece includes connecting piece stack shell and joint bracing piece each other articulated in the connecting piece stack shell, has offered a plurality ofly on the connecting piece stack shell to the hole that just link up with draw-in groove looks adaptation, and every pair hole corresponds a pair of articulated bracing piece each other, and the mutual articulated position of bracing piece is the platykurtic and rotates and install the pivot, and bracing piece lower extreme integrated into one piece fixed mounting has the handle, and upper end of the support bar integrated into one piece fixed mounting has the dop with the equal adaptation of hole, draw-in groove.
Furthermore, the outer wall of the connecting piece barrel body is provided with an external thread matched with the internal thread on the nut for use, and the nut is a regular hexagon or a regular octagon.
Furthermore, the end part of the clamping head is in a round angle shape, and a spring is fixedly arranged between the upper ends of the supporting rods.
Furthermore, the shape of the hole of the upper bottom plate of the prefabricated bottom plate is in the shape of an annular runway, the end surface of the connecting piece barrel body is also in the shape of the annular runway, the hole is formed in the straight line section of the annular runway of the connecting piece barrel body, and the external thread on the outer wall of the connecting piece barrel body is formed in the arc section of the annular runway.
Furthermore, the lifting hole is oval.
Furthermore, a reinforcing steel plate for reinforcement is welded on the square steel pipe outside the square hole.
Furthermore, a plurality of prestressed tendons which are arranged in parallel are transversely arranged on the prefabricated bottom plate, and a plurality of plate bottom distribution tendons which are arranged in parallel are longitudinally arranged; and after concrete is poured on the prefabricated bottom plate, the prestressed tendons and the bottom distribution tendons are embedded in a cast-in-place concrete layer.
The invention has the beneficial effects that:
1. according to the scissors fork type building steel frame and laminated slab connecting structure disclosed by the invention, the annular plate is arranged on the embedded part barrel body, the annular plate plays a role in enhancing the connecting strength of the embedded part and the prefabricated bottom plate on one hand, and the clamping grooves in the annular plate are clamped with the scissors fork type connecting pieces on the other hand, so that the square steel pipe and the prefabricated bottom plate are connected, the square steel pipe further supports the prefabricated bottom plate, the prefabricated bottom plate is prevented from cracking in the hoisting and transporting processes, the service performance of the prefabricated bottom plate is influenced, the scissors fork type connecting pieces are convenient to disassemble, the square steel pipe and the connecting pieces can be disassembled for secondary utilization, the construction period is shortened, and the utilization rate of materials is improved at the same time.
2. According to the connecting structure of the scissor fork type building steel frame and the laminated slab, the embedded part and the scissor fork type connecting piece are assembled in a mode that the clamping groove is clamped with the clamping head, the whole operation process is simple, a constructor can complete the installation and the disassembly of the whole connecting piece in a small working space of a square steel pipe, the construction is convenient and fast, the practicability is high, and the connecting structure is suitable for wide popularization and application.
3. According to the scissor-fork type building steel frame and laminated slab connecting structure disclosed by the invention, the annular plate protruding from the upper part of the embedded part or the oval lifting hole formed in the embedded part barrel body protruding from the upper surface of the prefabricated bottom plate are beneficial to solving the problem that the prefabricated bottom plate is difficult to lift in a factory or a construction site.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a first schematic structural view of the scissor-type structure after the steel frame and the composite slab are assembled;
FIG. 2 is a second schematic structural view of the scissor-type structure after the steel frame and the composite slab are assembled;
FIG. 3 is a schematic structural view of a connection structure of scissor-type fork type building steel frames and superimposed plates;
FIG. 4 is a schematic view of a connection structure of the prefabricated base plate and the square steel pipe in FIG. 3 according to the present invention;
FIG. 5 is a plan view of the prefabricated base panel of FIG. 3 according to the present invention;
FIG. 6 is a diagram of the reinforcement arrangement of the prefabricated base plate shown in FIG. 3 according to the present invention;
FIG. 7 is a bottom view of the square steel tube of FIG. 3 according to the present invention;
FIG. 8 is a top view of the square steel tube of FIG. 3 according to the present invention;
FIG. 9 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 7 in accordance with the present invention;
FIG. 10 is a schematic structural diagram of an embedded part according to an embodiment of the invention;
FIG. 11 is a front view of a structure of an embedded part according to an embodiment of the invention;
FIG. 12 is a cross-sectional view taken along line B-B of FIG. 11 in accordance with the present invention;
FIG. 13 is a cross-sectional view taken along line C-C of FIG. 11 in accordance with the present invention;
FIG. 14 is a front view of the coupling member of the present invention assembled with the barrel;
FIG. 15 is a schematic view of the connector structure of the present invention;
FIG. 16 is a side elevational view of the cartridge of FIG. 14 in accordance with the present invention;
FIG. 17 is a schematic structural view of the connecting member and the barrel assembly according to the second embodiment of the present invention;
FIG. 18 is a plan view of the barrel in the second embodiment of the present invention;
FIG. 19 is a plan view of the nut of FIG. 3 in accordance with the present invention;
FIG. 20 is a schematic structural diagram of a connecting member and an embedded part after assembly according to a second embodiment of the present invention;
FIG. 21 is a schematic structural view of an embedded part in the third embodiment of the present invention;
FIG. 22 is a front view of an embedment in a third embodiment of the present invention;
FIG. 23 is a cross-sectional view taken along line D-D of FIG. 22 in accordance with the present invention;
FIG. 24 is an enlarged view of a portion of FIG. 1 at E according to the present invention.
Reference numerals: the cast-in-place concrete slab comprises a cast-in-place concrete layer 1, a prefabricated bottom plate 2, a bottom plate hole 21, prestressed ribs 22, bottom plate distribution ribs 23, square steel pipes 3, square holes 31, reinforcing steel plates 32, steel pipe holes 33, embedded parts 4, a circular bottom plate 41, clamping grooves 42, an embedded part barrel 43, lifting holes 44, connecting pieces 5, a handle 51, a rotating shaft 52, springs 53, a connecting piece barrel 54, clamping heads 55, holes 56, external threads 57 and nuts 6.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the invention, shown in the drawings are schematic representations and not in the form of actual drawings; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and the specific meaning of the terms described above will be understood by those skilled in the art according to the specific circumstances.
Example one
The scissor-fork type building steel frame and composite slab connecting structure shown in fig. 1-4 and fig. 24 comprises a prefabricated bottom plate 2, a cast-in-place concrete layer 1 poured on the prefabricated bottom plate 2 and a plurality of square steel pipes 3 which are detachably fixed on the prefabricated bottom plate 2 and play a supporting role; the square steel pipes 3 are longitudinally arranged along the prefabricated bottom plate 2 and are arranged in parallel. A square hole 31 is formed in one side, away from the prefabricated bottom plate 2, of the square steel pipe 3, a steel pipe hole 33 is formed in the square steel pipe 3 opposite to one side of the square hole 31, and bottom plate holes 21 with two through sides are formed in the prefabricated bottom plate 2 corresponding to the steel pipe hole 33; the n-shaped embedded part 4, the two scissor-type connecting pieces 5 matched with the embedded part 4 and the nut 6 for fixing the connecting pieces 5 are arranged in the steel pipe hole 33 and the corresponding bottom plate hole 21.
As shown in fig. 7 to 9, a reinforcing steel plate 32 for reinforcement is welded on the square steel pipe 3 outside the square hole 31, and as shown in fig. 5 to 6, a plurality of pre-stressed tendons 22 arranged in parallel are transversely arranged on the prefabricated bottom plate 2, and a plurality of plate bottom distribution tendons 23 arranged in parallel are longitudinally arranged. After concrete is poured on the prefabricated bottom plate 2, the prestressed tendons 22 and the slab bottom distribution tendons 23 are pre-embedded in the cast-in-place concrete layer 1.
As shown in fig. 10 to 13, the embedded part 4 includes a cylindrical embedded part cylinder 43, a circular bottom plate 41 integrally formed on the top of the embedded part cylinder 43, and an annular plate integrally formed in the middle of the embedded part cylinder 43. A clamping groove 42 is formed in the annular plate on one side of the embedded part cylinder body 43, and the clamping groove 42 is conveniently clamped and fixed with the connecting piece 5; the design of the annular plate enhances the connection stability of the embedded part 4 and the prefabricated bottom plate 2. The circular bottom plate 41 is designed for the hoisting and transporting assembly of the whole prefabricated composite slab.
As shown in fig. 14 to 16, the connecting member 5 includes a connecting member 5 barrel and a pair of mutually hinged support rods connected to the connecting member 5 barrel in a clamping manner, two pairs of holes 56 matched with and communicated with the clamping grooves 42 are formed in the connecting member 5 barrel, each pair of holes 56 corresponds to one pair of mutually hinged support rods, the mutually hinged positions of the support rods are flat and rotatably provided with a rotating shaft 52, a handle 51 is fixedly installed at the lower end of each support rod in an integrally formed manner, a clamping head 55 matched with the holes 56 and the clamping grooves 42 is fixedly installed at the upper end of each support rod in an integrally formed manner, and the end of the clamping head 55 is in a round angle shape. A spring 53 is fixedly arranged between the upper ends of the supporting rods. The use process of the connecting piece 5 is similar to that of scissors, the assembly of the clamping head 55, the barrel body of the connecting piece 5 and the clamping groove 42 is realized through the adjustment of the tightness degree of the handle 51, and the stable connection of the connecting piece 5 and the embedded part 4 is realized.
The outer wall of the barrel body of the connecting piece 5 is provided with an external thread 57 matched with the internal thread on the nut 6 for use, and the nut 6 can be a regular hexagon or a regular octagon, so that the assembly is convenient.
Example two
As shown in fig. 17 to 20, the second embodiment is different from the first embodiment in that the holes 21 of the prefabricated bottom plate 2 are shaped like an annular track, the end surface of the connecting piece barrel 54 is also shaped like an annular track, the holes 56 are formed on the straight line section of the annular track of the connecting piece barrel 54, and the external threads on the outer wall of the connecting piece barrel 54 are formed on the arc section of the annular track. Thus, the size of the opening on the prefabricated bottom plate 2 can be reduced, the influence on the prefabricated plate is reduced, and the external threads on the arc sections on the two sides of the connecting piece barrel body 54 can still be matched and assembled with the nut 6.
EXAMPLE III
As shown in fig. 21 to 23, the third embodiment is different from the second embodiment in that the embedded part 4 includes a cylindrical embedded part 4 cylinder, a lifting hole 44 formed in the top of the embedded part 4 cylinder, and an annular plate integrally installed in the middle of the embedded part 4 cylinder. A clamping groove 42 is formed in the annular plate on one side of the cylinder body of the embedded part 4, and the clamping groove 42 is conveniently clamped and fixed with the connecting part 5; the design of the annular plate enhances the connection stability of the embedded part 4 and the prefabricated bottom plate 2. The lifting holes 44 are oval, and the lifting holes 44 are designed for lifting, transporting and assembling the whole prefabricated composite slab.
When this scissors fork building steelframe and superimposed sheet connection structure use, at first with built-in fitting 4 pre-buried in prefabricated bottom plate 2, then with the assembly of square steel pipe 3 in prefabricated bottom plate 2 bottom surface, go deep into square steel pipe 3 with connecting piece 5 inside the draw-in groove 42 of inserting 4 shafts of built-in fitting 4 through square hole 31 on the square steel pipe 3, insert in connecting piece 5 holds the handle 51 on the connecting piece 5 during the insertion earlier and inserts the connecting piece shaft 54, make on the connecting piece 5 behind dop 55 alignment hole 56 on the connecting piece shaft 54 loose handle 51, accomplish the pre-assembly of connecting piece 5. After the connecting piece 5 is preassembled, the connecting piece 5 penetrates into the square steel tube 3 through the square hole 31 in the square steel tube 3, when the connecting piece 5 is inserted, the handle 51 on the connecting piece 5 needs to be slightly held, the clamping head 55 on the connecting piece 5 is kept not to be separated from the connecting piece barrel body 54 and can enter the barrel body of the embedded part 4, when the clamping head 55 on the connecting piece 5 moves to the position of the clamping groove 42 of the embedded part barrel body 43, the handle 51 on the connecting piece 5 is loosened, the clamping head 55 on the connecting piece 5 is clamped into the clamping groove 42 of the embedded part barrel body 43, and the assembling of the connecting piece 5 and the embedded part 4 is completed. Similarly, after the other set of connecting pieces 5 are assembled, nuts 6 are assembled outside the connecting piece barrel 54 to fix the connecting pieces 5 after the two sets of connecting pieces 5 are assembled. And hoisting the prefabricated bottom plate 2 to a specified position through the round bottom plate 41 or the hoisting holes 44 on the embedded part 4, then tightly gripping the handle 51 on the connecting piece 5, taking down the connecting piece 5 for secondary utilization, and finally pouring concrete to form a cast-in-place concrete layer 1 after laying the prestressed tendons 22 and the slab bottom distribution tendons 23 on the prefabricated bottom plate 2, thereby completing the stable transportation of the prefabricated composite slab.
Finally, 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 various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A scissor-fork type building steel frame and laminated slab connecting structure is characterized by comprising a prefabricated bottom plate, a cast-in-place concrete layer poured on the prefabricated bottom plate and a plurality of square steel pipes which are detachably fixed on the prefabricated bottom plate and play a supporting role; the square steel pipes are longitudinally arranged along the prefabricated bottom plate and are arranged in parallel; one side of the square steel pipe, which is far away from the prefabricated bottom plate, is provided with a square hole, the square steel pipe, which is opposite to the square hole, is provided with a steel pipe hole, and the prefabricated bottom plate, which corresponds to the steel pipe hole, is provided with a bottom plate hole with two through sides; II-shaped embedded parts, scissor-fork type connecting pieces matched with the embedded parts and nuts used for fixing the connecting pieces are arranged in the steel pipe holes and the corresponding bottom plate holes;
the embedded part comprises a cylindrical embedded part cylinder body and an annular plate which is integrally installed in the middle of the embedded part cylinder body, and the annular plate on one side of the embedded part cylinder body is provided with a clamping groove;
the connecting piece comprises a connecting piece barrel body and mutually hinged supporting rods clamped in the connecting piece barrel body, a plurality of pairs of through holes matched with the clamping grooves are formed in the connecting piece barrel body, each pair of holes corresponds to one pair of mutually hinged supporting rods, the mutually hinged positions of the supporting rods are flat and are rotatably provided with rotating shafts, the lower ends of the supporting rods are integrally and fixedly provided with handles, and the upper ends of the supporting rods are integrally and fixedly provided with clamping heads matched with the holes and the clamping grooves;
a spring is fixedly arranged between the upper ends of the supporting rods.
2. The scissor type building steel frame and laminated slab connection structure of claim 1, wherein the embedded part further comprises a circular bottom plate integrally installed at the top of the embedded part barrel body.
3. The scissor type building steel frame and laminated slab connection structure of claim 1, wherein the embedded part further comprises a lifting hole formed in the top of the embedded part barrel body.
4. The structure for connecting a steel frame and a laminated slab of a scissor type building according to claim 2 or 3, wherein the outer wall of the connecting piece barrel is provided with an external thread matched with the internal thread of the nut, and the nut is in a regular hexagon or a regular octagon shape.
5. The scissor type building steel frame and laminated slab connection structure of claim 4, wherein the end of the clamp is rounded.
6. The scissor type building steel frame and laminated slab connection structure according to claim 5, wherein the holes of the upper base plate of the prefabricated base plate are in the shape of an annular runway, the end face of the connecting piece barrel body is also in the shape of an annular runway, the holes are formed in straight sections of the annular runway of the connecting piece barrel body, and external threads on the outer wall of the connecting piece barrel body are formed in arc sections of the annular runway.
7. The scissor type building steel frame and superimposed slab connection structure of claim 3, wherein the lifting holes are oval.
8. The scissor type building steel frame and laminated slab connection structure of claim 1, wherein a reinforcing steel plate for reinforcement is welded on the square steel pipe outside the square hole.
9. The scissor type building steel frame and laminated slab connection structure of claim 1, wherein a plurality of prestressed tendons arranged in parallel are transversely arranged on the prefabricated bottom plate, and a plurality of slab bottom distribution tendons arranged in parallel are longitudinally arranged; and after concrete is poured on the prefabricated bottom plate, the prestressed tendons and the bottom distribution tendons are embedded in a cast-in-place concrete layer.
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| CN202111396987.XA CN113958049B (en) | 2021-11-23 | 2021-11-23 | Scissor fork type building steel frame and laminated slab connecting structure |
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| CN202111396987.XA CN113958049B (en) | 2021-11-23 | 2021-11-23 | Scissor fork type building steel frame and laminated slab connecting structure |
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| CN113958049A CN113958049A (en) | 2022-01-21 |
| CN113958049B true CN113958049B (en) | 2022-12-27 |
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| CN114908626A (en) * | 2022-05-06 | 2022-08-16 | 交通运输部公路科学研究所 | Vertical connecting device between assembled runway concrete pavement slab layers of newly-built airport |
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