CN113846800B - Prefabricated profile steel horizontal beam and prefabricated floor slab connecting structure and connecting method - Google Patents
Prefabricated profile steel horizontal beam and prefabricated floor slab connecting structure and connecting method Download PDFInfo
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- CN113846800B CN113846800B CN202111356413.XA CN202111356413A CN113846800B CN 113846800 B CN113846800 B CN 113846800B CN 202111356413 A CN202111356413 A CN 202111356413A CN 113846800 B CN113846800 B CN 113846800B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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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
- 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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2481—Details of wall panels
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2484—Details of floor panels or slabs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
- E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
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Abstract
The invention discloses a connecting structure and a connecting method for a prefabricated profile steel horizontal beam and a prefabricated floor slab, and relates to the field of civil building structures. According to the invention, the embedded tie rods are installed on the horizontal beam, so that the connection between the horizontal beam and the upper prefabricated shear wall, the lower prefabricated shear wall and the horizontal prefabricated composite floor slab can directly penetrate through the embedded tie rods on the horizontal beam and then be screwed down by the nuts in the installation process of the horizontal beam, the on-site wet connection can be avoided, the construction speed is high, the replaceability is realized, the installation method is simple and easy, the quality is easy to guarantee, the disassembly is convenient, and the repeated reutilization of the horizontal beam is facilitated.
Description
Technical Field
The invention relates to the field of civil construction structures, in particular to a connecting structure and a connecting method for a prefabricated steel horizontal beam and a prefabricated floor slab.
Background
With the arrival of the integrated era of building prefabrication and assembly, the construction concept of high efficiency, simplicity and green becomes an unlimited pursuit of the building industry. The prefabricated assembly type shear wall is an integral prefabricated assembly type shear wall structure formed by segmental prefabrication and on-site assembly connection of the shear wall on the basis of a structural system of a cast-in-place concrete shear wall and by taking a horizontal beam of the shear wall structural system as a structural unit. In a shear wall structure system, a horizontal beam is used as a connecting component between an upper prefabricated shear wall and a lower prefabricated shear wall and a left horizontal floor slab and a right horizontal floor slab, plays the core role of connection and bearing, is used for coordinating the force transmission and deformation among all parts of stressed components, is a core component of an assembly type component, and is the key for determining the integral bearing performance of the prefabricated assembly type shear wall structure system.
When the precast concrete member is used in an assembled building structure, the traditional reinforced concrete horizontal beam and the like are mostly formed by combining a reinforcement cage formed after bundling and concrete cast-in-place, the bundling quality of the reinforcement is often influenced by the welding technology of welders, if the welding treatment of a joint is not good, the construction speed is seriously influenced, the construction quality is reduced, and environmental damage and resource waste are easily caused; meanwhile, the sections of the existing horizontal beams are all special-shaped concrete sections, so that the quality of pouring concrete is difficult to guarantee, the construction period is long, and the cost is high. The error in molding is large, the difficulty of connecting and constructing other components is high, and the whole safety and reliability of the structure are affected.
The patent application with the publication number of CN107327019A provides a template-free cast-in-place reinforced concrete ring beam structure and a construction method thereof, the template-free cast-in-place reinforced concrete ring beam structure is arranged between two constructional columns, the constructional columns are provided with ring beams, the ring beams comprise prefabricated standard modules, a plurality of prefabricated standard modules are combined and connected and then are built in the ring beam at the top of a wall body, the ring beams and concrete of the constructional column part below the top of the ring beams are poured, and the prefabricated standard modules and the ring beams form a whole after the concrete is poured. The construction method has the advantages that the construction method is simple in structure and strong in operability, five kinds of module combinations can meet construction requirements of ring beams and constructional columns in various forms, the construction method has the advantages of convenience in use and few operators, and the effect of reducing labor intensity is achieved; the construction of the template-free cast-in-place reinforced concrete ring beam structure is realized by various prefabricated model combination methods, the construction method is simple and convenient, and compared with the existing construction method, the construction method has the advantages of high construction efficiency and small potential safety hazard. However, the ring beam in the patent application is still mainly manufactured by wet operation, so that the advantages of resource saving, environment protection and pollution reduction of the assembly type building technology are difficult to exert to the maximum extent, and the rapid assembly is difficult to realize; therefore, how to realize the reference connection of the beam plate and realize the rapid high-quality installation is still the key point of the assembled structure research and the engineering application.
Based on the structure, in order to improve the installation efficiency and the integral assembly quality of the house, the development of a prefabricated steel horizontal beam, a prefabricated floor slab connecting structure and a construction method for connecting the prefabricated steel horizontal beam and the prefabricated floor slab are urgently needed, so that the targeted development and design are carried out based on the stress characteristics of the horizontal beam, the connection with the prefabricated reinforced concrete floor slab, the prefabricated shear wall and other components is realized more quickly and effectively through the structure, and the high-quality assembly among the components can be carried out efficiently.
Disclosure of Invention
The invention aims to provide a connecting structure and a connecting method for a prefabricated steel horizontal beam and a prefabricated floor slab, which are used for realizing more effective connection with a prefabricated reinforced concrete member based on the stress characteristic of the horizontal beam and can efficiently carry out high-quality assembly among components.
In order to realize the purpose of the invention, the technical scheme is as follows: the utility model provides a prefabricated shaped steel crouches roof beam, includes the horizontal roof beam of transversal personally submitting "protruding" type, and the crouching roof beam is shaped steel combined member, and crouches the roof beam both sides and all has spacing platform, all installs the connecting piece on the top surface of crouching the roof beam, the bottom surface of crouching the roof beam and two spacing platforms, and the top surface of crouching the roof beam, the bottom surface of crouching the roof beam and two connecting pieces on the spacing platform all are two at least to guarantee that the atress reliability just is convenient for take one's place.
Further, the horizontal beam comprises a square steel pipe, small-section channel steel and two high-section channel steel, the two high-section channel steel are arranged left and right oppositely, the square steel pipe is installed on the upper flanges of the two high-section channel steel, the small-section channel steel is installed between the lower flanges of the two high-section channel steel, and the opening of the small-section steel channel is outward.
Furthermore, two the spacing platform is last all to install inequilateral channel-section steel, and the long flange of inequilateral channel-section steel is fixed with square steel pipe, and the web of inequilateral channel-section steel is fixed with high cross-section channel-section steel.
Furthermore, the unequal-side channel steel is also provided with an oblique welding steel plate for connecting a web plate of the unequal-side channel steel and a short flange of the unequal-side channel steel.
Furthermore, a fine aggregate concrete pouring layer is arranged in the unequal-side channel steel.
Furthermore, the long flange of the unequal-side channel steel is higher than the square steel pipe.
Furthermore, the connecting piece on the bottom surface of the horizontal beam is positioned in the channel steel with the small cross section.
Furthermore, two oblique stiffening plates are further arranged in the horizontal beam, and the upper ends of the two oblique stiffening plates support the two limiting platforms respectively.
Furthermore, the connecting piece is pre-buried pin, and the extension end of pre-buried pin has the screw thread, and the later stage of being convenient for is screwed up fixedly through the nut.
The utility model provides a prefabricated floor connection structure, includes as above horizontal beam, still includes prefabricated shear force wall of upside, downside and two horizontal prefabricated coincide floor, and the prefabricated shear force wall of upside is fixed on the top surface of horizontal beam, and the prefabricated shear force wall of downside is fixed on the bottom surface of horizontal beam, and the link of two horizontal prefabricated coincide floor overlaps respectively on two spacing platforms, forms the connection structure who uses horizontal beam as the center.
Further, all seted up the notch on the lateral wall of prefabricated shear force wall of upside and downside, and the connecting piece extends to the locking in the notch and fixes.
A prefabricated floor slab connecting method includes the steps of positioning and installing a lower prefabricated shear wall, installing horizontal beams on the lower prefabricated shear wall, fixing an upper prefabricated shear wall on a top surface, overlapping connecting ends of two horizontal prefabricated composite floor slabs on two limiting platforms respectively, and fixing the connecting ends of the horizontal beams with the upper prefabricated shear wall, the lower prefabricated shear wall and the horizontal prefabricated composite floor slabs through connecting pieces of the top surface of the horizontal beams, the bottom surface of the horizontal beams and the two limiting platforms respectively.
Furthermore, the fine aggregate concrete is poured on the limiting platform before the horizontal prefabricated composite floor slab is installed, so that the connectivity of the floor slab and the horizontal beam is improved, the structural integrity is further improved, and the impermeability is improved.
The beneficial effect of the invention is that,
1. through pre-buried connecting piece on the horizontal beam, make the horizontal beam in the installation, the connection of horizontal beam and upside prefabricated shear force wall, downside prefabricated shear force wall, the prefabricated coincide floor of level can directly adopt connecting piece and supporting retaining member high-speed joint, not only can avoid on-the-spot wet joint, green, the construction speed is fast, and has the convertibility, and the mounting method is simple and convenient, and convenient to detach has increased the holistic life of structure.
2. Compared with the traditional reinforced concrete cast-in-place beam, the horizontal beam made of the steel plate and the profile steel member has the advantages of high strength, light dead weight, good fire resistance and good prefabrication, completely abandons on-site wet operation, can recycle steel in percentage and completely meets the green and environment-friendly requirements of an assembly type building; meanwhile, the horizontal beam has high rigidity, and the deformation of the upper prefabricated shear wall, the lower prefabricated shear wall and the horizontal prefabricated composite floor slab can be well coordinated.
3. The horizontal beam is made by adopting a square steel pipe, a small-section channel steel and two high-section channel steels together, the bottom surface of the horizontal beam is provided with a groove structure, unequal-side channel steels are installed on a limiting platform, the short flanges of the unequal-side channel steels form tenon structures, and the long flanges of the unequal-side channel steels are higher than the top surface of the square steel pipe, so that the upper prefabricated shear wall, the lower prefabricated shear wall and the horizontal prefabricated composite floor can be in place in the installation process in a clamping mode, the in-place quality is high, the component installation measures are reduced, the engineering cost is reduced, and the water seepage path diameter of the traditional connection is changed after the horizontal prefabricated composite floor is connected with the horizontal beam due to the upward opening of the unequal-side channel steels, a good water stopping effect can be achieved, and the problem of water leakage gaps among the assembled components is effectively avoided; adopt inequilateral channel-section steel can effectively improve horizontal beam self stability simultaneously, and the connecting piece is connected and can effectively improve horizontal beam and upside precast shear wall connection reliability between the two, and inequilateral channel-section steel is light and be difficult to warp, easily transport, hoist and mount and transportation, and it is also convenient to connect the assembly.
4. By installing the inequilateral channel steel, the short flange of the inequilateral channel steel and the long flange of the inequilateral channel steel can also be used as a concave-convex key groove at the joint of the horizontal beam and the horizontal prefabricated composite slab, and the long flange of the inequilateral channel steel is higher than the top surface of the square steel pipe and the bottom surface of the horizontal beam and is lower than the corresponding groove, so that the upper prefabricated shear wall, the lower prefabricated shear wall and the horizontal prefabricated composite slab can be conveniently connected; meanwhile, fine aggregate concrete is poured into the unequal-side channel steel, so that the bonding strength between the horizontal beam and the horizontal prefabricated composite floor slab is improved, and the connection integrity between the horizontal prefabricated composite floor slab and the horizontal beam is improved.
5. The horizontal beam is directly manufactured by welding the square steel pipe, the small-section channel steel, the two high-section channel steels, the unequal-side channel steels and the like, and the process is simple; the horizontal beam is internally of a hollow structure, so that the pipeline can be conveniently buried and replaced, and the potential danger caused by the external installation and fixation of the pipeline and the technical and technological problems in the aspect of subsequently laying open wires can be effectively solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a perspective view of a prefabricated steel horizontal beam provided by the present invention;
FIG. 2 is a front view of a prefabricated horizontal steel beam provided by the invention;
FIG. 3 is a block diagram of the inequilateral channel of FIG. 1;
FIG. 4 is a mounting structure view of an upper prefabricated shear wall and a lower prefabricated shear wall in the prefabricated floor slab connection structure provided by the invention;
fig. 5 is a structure view illustrating installation of a horizontal prefabricated composite floor slab in the prefabricated floor slab connection structure according to the present invention.
Reference numbers and corresponding part names in the drawings:
1. a square steel pipe, 2 high-section channel steel, 3 unequal-side channel steel, 4 small-section channel steel, 5 oblique stiffening plates, 6 connecting pieces, 7 limiting platforms, 8 upper prefabricated shear walls, 9 lower prefabricated shear walls, 10 notches, 11 horizontal prefabricated composite floor slabs, 12 fine aggregate concrete pouring layers, 13 locking pieces,
3-1 parts of long flange, 3-2 parts of web, 3-3 parts of short flange and 3-4 parts of oblique welding steel plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
As shown in fig. 1, 2 and 3, the cross section of the prefabricated profile steel horizontal beam provided by the invention is in a convex shape, namely the width of the upper part of the horizontal beam is smaller than that of the lower part of the horizontal beam, so that the horizontal beam is provided with two step surfaces, the two step surfaces are the limiting platforms 7 of the horizontal beam, the limiting platforms 7 are mainly convenient for lap joint of horizontal prefabricated composite floor slabs 11, and the two limiting platforms 7 on the horizontal beam are symmetrically arranged relative to the central axis of the horizontal beam; meanwhile, the horizontal beam is formed by welding the profile steel combined members, compared with the traditional reinforced concrete cast-in-place beam, the horizontal beam has the advantages of high strength, light dead weight and good prefabrication, solves the problem of large field wet operation amount, can recover steel materials in hundreds of percent, and completely meets the green and environment-friendly requirements of assembly type buildings. All install connecting piece 6 on horizontal beam top surface, horizontal beam bottom surface and the spacing platform 7, this connecting piece 6 mainly used later stage horizontal beam and upside prefabricated shear force wall 8, downside prefabricated shear force wall 9 or the prefabricated coincide floor 11's of level connection, and the horizontal beam top surface, connecting piece 6 on horizontal beam bottom surface and the spacing platform 7 all can be a plurality of, horizontal beam top surface, a plurality of connecting pieces 6 on horizontal beam bottom surface and the spacing platform 7 can be arranged along its axis direction interval, make later stage upside prefabricated shear force wall 8, downside prefabricated shear force wall 9 or the prefabricated coincide floor 11 of level be connected with the horizontal beam more stably.
In some embodiments, the horizontal beam comprises a square steel pipe 1, a small-section channel steel 4 and two high-section channel steels 2, the small-section channel steel 4 and the high-section channel steels 2 are both U-shaped, the type of the high-section channel steel 2 is 40#, the width of a rib plate of the high-section channel steel 2 is 400mm, the thickness of the high-section channel steel 2 is 10.5mm, the type of the small-section channel steel 4 is 22b, the width of a rib plate of the small-section channel steel 4 is 220mm, the width of a rib plate of the small-section channel steel 4 is 79mm, the thickness of the small-section channel steel 4 is 10mm, the axial directions of the small-section channel steel 4, the high-section channel steel 2 and the square steel pipe 1 are consistent, and the width direction of the high-section channel steel 2 is consistent with the vertical direction, the flange with the higher height on the high-section channel steel 2 is the upper flange of the high-section channel steel 2, the flange with the lower height on the high-section channel steel 2 is the lower flange of the high-section channel steel 2, the width of the upper flange of the high-section channel steel 2 is 100mm, the width of the lower flange of the high-section channel steel 2 is 40mm, the openings of the two high-section channel steels 2 are arranged oppositely, the two high-section channel steels 2 are respectively installed on the two opposite sides of the square steel pipe 1, the upper flange of the high-section channel steel 2 is welded and fixed with the square steel pipe 1, and after the high-section channel steel 2 is welded and fixed with the square steel pipe 1, the upper flange of the high-section channel steel 2 and the side wall of the square steel pipe 1 form a limiting platform 7; meanwhile, the lower ends of the two high-section channel steels 2 are flush, the small-section channel steel 4 is installed between the two high-section channel steels 2, the opening of the small-section channel steel 4 faces downwards, and the flange of the small-section channel steel 4 is welded and fixed with the flange of the high-section channel steel 2 located on the same side, so that the bottom surface of the horizontal beam is provided with a groove structure, and the bottom surface of the horizontal beam forms a structure which can be connected with the lower prefabricated shear wall 9 in an occluded mode; meanwhile, the width of the square steel tube 1 is 200mm, the wall thickness of the square steel tube 1 is 10.5mm, and full welding is adopted among the high-section channel steel 2, the small-section channel steel 4 and the square steel tube 1. Through adopting square steel pipe 1, small cross section channel-section steel 4 and two high cross section channel-sections 2 to weld jointly and form horizontal beam, not only make the structure of horizontal beam simpler, and make the shaping of horizontal beam more convenient.
In this embodiment, two high-section channel-section steels 2 still can adopt the unequal channel-section on both sides edge of a wing, and the upper flange width of high-section channel-section 2 is greater than the lower flange width of high-section channel-section 2 promptly, makes the upper flange of two high-section channel-section 2 can direct relatively welded fastening, then with square steel pipe 1 jointly fix on the upper flange of two high-section channel-section 2 can, at this moment, little section channel-section 4 can normally welded fastening between the lower flange of two high-section channel-section channels 2.
In this embodiment, because the horizontal beam adopts components welded fastening such as square steel pipe 1, small cross-section channel-section steel 4 and two high cross-section channel-section steels 2 to form to make the inside cavity form that is of horizontal beam that makes, not only the pre-buried pipeline of being convenient for is buried underground, and changes the convenience, has solved the difficult problem in the aspect of the pipeline lies in the fixed atress of horizontal beam external mounting effectively.
In some embodiments, unequal-side channel steel 3 is mounted on each of the two limiting platforms 7, the unequal-side channel steel 3 is that two flanges of the unequal-side channel steel 3 are unequal in width, one flange of the unequal-side channel steel 3 with a larger width is a long flange 3-1 of the equilateral channel steel, and one flange of the unequal-side channel steel 3 with a smaller width is a short flange 3-3 of the unequal-side channel steel 3; the long flange 3-1 of the unequal-side channel steel 3 is attached to the side wall of the square steel pipe 1 and is welded and fixed with the side wall of the square steel pipe 1, the web 3-2 of the unequal-side channel steel 3 is attached to the upper flange of the high-section channel steel 2 and is welded and fixed with the upper flange of the high-section channel steel 2, and the unequal-side channel steel 3, the square steel pipe 1 and the high-section channel steel 2 are welded and fixed through spot welding; the inequilateral channel steel 3 adopts Q235B type structural steel, and the specification of the inequilateral channel steel 3 is 18B, so that the strength of the inequilateral channel steel 3 is guaranteed, the connectivity of a horizontal beam is enhanced, and the installation of the inequilateral channel steel 3 is more stable. After the unequal-side channel steel 3 is installed, the short flanges 3-3 of the unequal-side channel steel 3 protrude upwards relative to the limiting platform 7, so that the connecting end of the horizontal prefabricated composite floor slab 11 can be lapped on the limiting platform 7 in the use process of a horizontal beam, and when the unequal-side channel steel 3 is installed on the limiting platform 7, the connecting end of the horizontal prefabricated composite floor slab 11 is lapped on the unequal-side channel steel 3, at the moment, a clamping groove needs to be reserved when the horizontal prefabricated composite floor slab 11 is cast, so that the short flanges 3-3 of the unequal-side channel steel 3 can be clamped in the clamping groove on the horizontal prefabricated composite floor slab 11, the horizontal beam and the horizontal prefabricated composite floor slab 11 are positioned, the in-place quality is high, the component installation measures are reduced, the construction cost is reduced, after the horizontal prefabricated composite floor slab 11 is installed, the short flanges 3-3 of the unequal-side channel steel 3 can limit the displacement of the horizontal prefabricated composite floor slab 11 to a certain degree, and the connection between the horizontal prefabricated floor slab 11 and the short flanges 3-3 of the unequal-3 is more stable; meanwhile, by adopting the unequal-side channel steel 3, after the connecting end of the horizontal prefabricated composite floor slab 11 is lapped on the unequal-side channel steel 3, the partition wall is formed at the position 3-3 of the short flange of the unequal-side channel steel 3, so that water permeating into the unequal-side channel steel 3 is effectively prevented from directly seeping out from the edge of the limiting platform 7, the water seepage path of the traditional connection is changed, a good water stopping effect can be achieved, and the problem of water leakage along the assembly type component is effectively avoided.
In some embodiments, the unequal-side channel 3 is further provided with an oblique welded steel plate 3-4 connecting a web 3-2 of the unequal-side channel 3 and a short flange 3-3 of the unequal-side channel 3, one end of the oblique welded steel plate 3-4 is welded and fixed with the short flange 3-3 of the unequal-side channel 3, the other end of the oblique welded steel plate 3-4 is welded and fixed with the web 3-2 of the unequal-side channel 3, the oblique welded steel plate 3-4 is welded and fixed, the short flange 3-3 of the unequal-side channel 3 is effectively prevented from yielding, the short flange 3-3 of the unequal-side channel 3 is ensured to have sufficient strength, internal force can be stably transmitted, the structural strength of the short flange 3-3 of the unequal-side channel 3 is larger, the web 3-2 of the unequal-side channel 3 and the oblique welded steel plate 3-4 form a triangular structure, the bayonet structure which is prefabricated and matched on the horizontal prefabricated laminated floor slab 11 is in a V shape, the opening width of the bayonet structure on the horizontal prefabricated floor slab 11 is larger than that the bayonet structure, and the horizontal prefabricated floor slab can be more conveniently aligned with the inverted construction, and the horizontal prefabricated components can be installed, and the construction cost of the unequal-side channel 3 can be reduced.
In some embodiments, the unequal-sided channel steel 3 is further provided with a fine aggregate concrete pouring layer 12, and in an actual use process, the fine aggregate concrete pouring layer 12 is formed by pouring after the horizontal beam is installed, so that the horizontal prefabricated composite floor slab 11 can be effectively and conveniently adjusted to be in place, the bonding strength between the horizontal beam and the horizontal prefabricated composite floor slab 11 is improved, and the connection integrity of the horizontal beam is improved.
In some embodiments, the long flanges 3-1 of the unequal-side channel steels 3 are higher than the square steel pipes 1, so that after the two unequal-side channel steels 3 are respectively installed on the limiting platforms 7, the top surfaces of the square steel pipes 1 and the long flanges 3-1 of the two unequal-side channel steels 3 jointly form a groove structure because the long flanges 3-1 of the two unequal-side channel steels 3 are higher than the square steel pipes 1, when the upper prefabricated shear wall 8 is connected with the top of the square steel pipe 1, the two sides of the upper prefabricated shear wall 8 can be limited by the long flanges 3-1 of the unequal-side channel steels 3, accurate positioning installation of the upper prefabricated shear wall 8 at the later stage can be guaranteed, and after the upper prefabricated shear wall 8 is installed on the square steel pipes 1, the integrity between the upper prefabricated shear wall 8 and the square steel pipes 1 is better.
In some embodiments, the connecting piece 6 on the bottom surface of the horizontal beam is located in the small-section channel steel 4, and the opening of the small-section channel steel 4 is outward, so that the bottom surface of the horizontal beam is provided with a groove structure, when the horizontal beam is installed, the top of the lower prefabricated shear wall 9 can be clamped in the small-section channel steel 4, when the shear wall is connected with the small-section channel steel 4, two flanges of the small-section channel steel 4 can respectively limit two sides of the lower prefabricated shear wall 9, accurate positioning installation of the horizontal beam and the lower prefabricated shear wall 9 can be realized, and after the lower prefabricated shear wall 9 is made, the integrity between the prefabricated shear wall and the horizontal beam is better.
In some embodiments, two oblique stiffening plates 5 are further arranged in the horizontal beam, the upper ends of the two oblique stiffening plates 5 respectively support the two limiting platforms 7, the upper ends of the oblique stiffening plates 5 are welded and fixed with the upper flange of the high-section channel steel 2, the lower ends of the oblique stiffening plates 5 are welded and fixed with the lower flange of the high-section channel steel 2 or the rib plate of the high-section channel steel 2, the thickness of each oblique stiffening plate 5 is 10mm, and the integrity and the stress reliability of the horizontal beam are effectively improved.
In some embodiments, the connecting member 6 is an embedded bolt, and when the horizontal beam is processed, screw holes are reserved on the top surface of the horizontal beam, the bottom surface of the horizontal beam and the two limiting platforms 7, then the embedded bolt is inserted into the reserved screw holes, and finally a nut on the embedded bolt is welded and fixed with the horizontal beam, so that the embedded bolt and the horizontal beam are fixed, and the connection strength of the embedded bolt and the horizontal beam is ensured; meanwhile, the shear wall above the horizontal beam is more convenient to butt with the top surface of the square steel tube 1 after the horizontal beam is installed, the length of the embedded tie rod on the square steel tube 1 can be reduced, and the embedded tie rod on the square steel tube 1 of the shear wall can be quickly inserted into the shear wall when the shear wall is installed. Because the unequal-side channel steel 3 can be further installed on the limiting platform 7, the unequal-side channel steel 3 is also provided with a threaded hole when being processed, when the unequal-side channel steel 3 is installed, the embedded bolt rod on the limiting platform 7 penetrates through the threaded hole in the unequal-side channel steel 3, then a nut is sleeved on the embedded bolt rod, the unequal-side channel steel 3 is fixed on the limiting platform 7 by screwing the nut, finally, the nut and the unequal-side channel steel 3 are welded and fixed, when the embedded bolt rod is installed on the limiting platform 7, the unequal-side channel steel 3 is fixed with the horizontal beam, the installation of the unequal-side channel steel 3 does not need to adopt other structural parts, the connecting end of the horizontal prefabricated composite floor slab 11 is lapped on the unequal-side channel steel 3, the horizontal beam and the horizontal prefabricated composite floor slab 11 do not need to adopt an additional connecting structure for connection, the structure of the horizontal beam is simpler, and the overall stability and the stress reliability of the horizontal beam are improved.
When a horizontal beam needs to be machined, the two oblique stiffening plates 5 are welded in the two high-section channel steel 2 respectively, the upper flanges of the two high-section channel steel 2 are welded and fixed with the two side faces of the square steel pipe 1 respectively, the long flanges 3-1 of the unequal-side channel steel 3 are attached to the side wall of the square steel pipe 1, the short flanges 3-3 of the unequal-side channel steel 3 are attached to the upper flanges of the high-section channel steel 2, the unequal-side channel steel 3, the high-section channel steel 2 and the square steel pipe 1 are welded and fixed together, and finally, the two flanges of the small-section channel steel 4 are welded and fixed with the lower flanges of the high-section channel steel 2 respectively to complete the machining of the horizontal beam. An embedded bolt rod is jointly installed on the upper flanges of the unequal-side channel steel 3 and the high-section channel steel 2, and a nut is sleeved at the upper end of the bolt after the embedded bolt rod is installed, so that the unequal-side channel steel 3 and the upper flange of the high-section channel steel 2 are locked and fixed, the nut and the unequal-side channel steel 3 are welded and fixed, and the nut of the embedded bolt rod and the upper flange of the high-section channel steel 2 are welded and fixed; and meanwhile, pre-buried bolt rods are arranged on the top surface of the square steel pipe 1 and the small-section channel steel 4, and nuts on the pre-buried bolt rods are welded and fixed after the pre-buried bolt rods are arranged.
The prefabricated steel horizontal beam provided by the embodiment is directly formed by welding the square steel pipe 1, the high-section channel steel 2 and the small-section channel steel 4, so that the interior of the horizontal beam is hollow, and a pipeline can be embedded conveniently after installation; meanwhile, because the horizontal beam is a profile steel component, the produced horizontal beam has good mechanical property and high shear strength, compared with a common cast-in-place horizontal beam, the local shear resistance can be effectively improved, the horizontal beam is light in weight and easy to carry, hoist and place in actual construction, centralized and unified processing, field assembly and rapid construction of prefabricated components in a factory can be realized, the later-stage connection with a PC component is more convenient by reserving pre-embedded tie rods on the horizontal beam, and the bearing capacity and the stability of the horizontal beam are effectively improved by arranging the oblique stiffening plates 5.
Example 2
As shown in fig. 4 and 5, the present embodiment also provides a prefabricated floor slab connection structure, including any one of the horizontal beams provided in embodiment 1; the shear wall structure also comprises an upper prefabricated shear wall 8, a lower prefabricated shear wall 9 and two horizontal prefabricated composite floor slabs 11, wherein the upper prefabricated shear wall 8 is positioned above the horizontal beam, the lower prefabricated shear wall 9 is positioned below the horizontal beam, and the two horizontal prefabricated composite floor slabs 11 are respectively positioned at two sides of the horizontal beam; the lower end face of the upper side prefabricated shear wall 8 is connected to the top surface of the horizontal beam in a facing mode, the pre-buried tie rods on the top surface of the horizontal beam are fixedly connected, the upper end face of the lower side prefabricated shear wall 9 is in butt joint with the lower end face of the horizontal beam, the connecting ends of the two horizontal prefabricated composite floor slabs 11 are respectively in lap joint with the two limiting platforms 7 through the pre-buried tie rods on the bottom surfaces of the horizontal beams, and the horizontal beam is fixedly connected with the horizontal prefabricated composite floor slabs 11 through the pre-buried tie rods on the limiting platforms 7.
According to the prefabricated floor slab connecting structure provided by the embodiment, the connection between the horizontal beam and the upper prefabricated shear wall 8, the lower prefabricated shear wall 9 and the horizontal prefabricated composite floor slab 11 can be realized by pre-burying the tie rods, the field wet connection can be effectively avoided, the prefabricated floor slab connecting structure is green and environment-friendly, the construction speed is high, and the rapid positioning and the fixation are easy; the embedded tie rod has the advantages of replaceability, simple and convenient installation method, convenient disassembly and assembly and prolonged service life of the whole connecting structure. Because the horizontal beam is a profile steel combined component and is designed according to the structural stress characteristic, the stability of the horizontal beam is ensured, and the connection reliability between the horizontal beam and the prefabricated shear walls and between the horizontal beam and the prefabricated floor slabs is effectively improved after the horizontal beam is connected with the upper prefabricated shear wall 8, the lower prefabricated shear wall 9 and the horizontal prefabricated composite floor slab 11.
In some embodiments, when the unequal-sided channel steel 3 is installed on the limiting platform 7, because the short flanges 3-3 of the unequal-sided channel steel 3 are upward bulges, after the horizontal prefabricated composite floor slab 11 is prefabricated and formed, one surface of the horizontal prefabricated composite floor slab 11 matched with the unequal-sided channel steel 3 is provided with a clamping groove, when the horizontal prefabricated composite floor slab 11 is erected on the unequal-sided channel steel 3, the short flanges 3-3 of the unequal-sided channel steel 3 can be clamped in the clamping grooves on the horizontal prefabricated composite floor slab 11, so that a clamping structure is formed between the horizontal composite floor slab and the unequal-sided channel steel 3, positioning between a horizontal beam and the horizontal prefabricated composite floor slab 11 is realized, the in-place quality is high, component installation measures are reduced, the construction cost is reduced, and after the horizontal prefabricated composite floor slab 11 is installed, the short flanges 3-3 of the unequal-sided channel steel 3 can limit displacement of the horizontal prefabricated composite floor slab 11 to a certain extent, so that the connection between the horizontal prefabricated composite floor slab 11 and the short flanges 3-3 of the unequal-3 is more stable; meanwhile, by adopting the unequal-side channel steel 3, after the connecting end of the horizontal prefabricated composite floor slab 11 is lapped on the unequal-side channel steel 3, the partition wall is formed at the position 3-3 of the short flange of the unequal-side channel steel 3, so that water permeating into the unequal-side channel steel 3 is effectively prevented from directly permeating into a room, the water permeating path of the traditional connection is changed, a good water stopping effect can be achieved, and the problem of water leakage along the assembly type component is effectively avoided.
In some embodiments, because a horizontal beam in the horizontal beam is formed by welding the square steel tube 1, the small-section channel steel 4 and the two high-section channel steels 2, and the long flanges 3-1 of the two unequal-side channel steels 3 are higher than the top of the square steel tube 1, when the lower prefabricated shear wall 9 and the upper prefabricated shear wall 8 are installed, the connecting end of the lower prefabricated shear wall 9 can be inserted into the opening of the small-section channel steel 4, the connecting end of the upper prefabricated shear wall 8 can be inserted between the long flanges 3-1 of the two unequal-side channel steels 3, and the connecting end of the upper prefabricated shear wall 8 is butted with the top of the square steel tube 1, so that when the horizontal beam and the upper prefabricated shear wall 8 are installed, the horizontal beam is connected with the lower prefabricated shear wall 9 and the upper prefabricated shear wall 8 in an occlusion manner, the perpendicularity of the horizontal beam, the lower prefabricated shear wall 9 and the upper prefabricated shear wall 8 is ensured, and the horizontal beam, the lower prefabricated shear wall 9 and the upper prefabricated shear wall 8 can be quickly positioned, so that the integrity among the horizontal beam, the lower prefabricated shear wall 9 and the upper prefabricated shear wall 8 is better.
In some embodiments, notches 10 are formed in the side walls of the upper prefabricated shear wall 8 and the lower prefabricated shear wall 9, each notch 10 may be rectangular, circular or in other shapes, the depth direction of each notch 10 in the upper prefabricated shear wall 8 is consistent with the thickness direction of the upper prefabricated shear wall 8, the depth direction of each notch 10 in the lower prefabricated shear wall 9 is consistent with the thickness direction of the lower prefabricated shear wall 9, the height of each notch 10 corresponds to the position of an extending end of a pre-buried bolt, each of the upper prefabricated shear wall 8, the lower prefabricated shear wall 9 and the horizontal prefabricated composite floor slab 11 is provided with a reserved hole, the length directions of the reserved holes in the upper prefabricated shear wall 8, the lower prefabricated shear wall 9 and the horizontal prefabricated composite floor slab 11 are consistent with the vertical direction, the diameter of each reserved hole is slightly larger than the diameter of a pre-buried bolt, and in order to facilitate installation of the upper prefabricated shear wall 8 and the top of the square steel pipe 1, the length of the pre-buried bolt on the square steel pipe 1 can be reduced, so that the upper prefabricated shear wall 8 and the pre-buried bolt on the square steel pipe 1 can be quickly and accurately inserted into the reserved hole in the upper prefabricated shear wall 8; meanwhile, in order to facilitate the insertion of the embedded bolt rod in the reserved hole channel, the gap between the embedded bolt rod and the reserved hole channel can be kept between 0.5 and 1.5mm. Prefabricated shear force wall 8 of upside and downside 9 when the installation, the pre-buried tie rod at 1 top of square steel pipe runs through in the preformed hole on the prefabricated shear force wall 8 of upside extends to notch 10, pre-buried tie rod on the small-section channel-section steel 4 runs through in the preformed hole on the prefabricated shear force wall 9 of downside extends to notch 10, and pre-buried tie rod on the big-section channel-section steel can directly run through the preformed hole on the prefabricated coincide floor of level 11, last through retaining member 13 to the extension end locking of pre-buried tie rod fixed can, here retaining member 13 can be nut or other locking structure.
The prefabricated section steel horizontal beam connecting structure provided by the invention has the advantages of high strength, light dead weight and simple manufacturing process, and the horizontal beam is hollow inside and can be used for embedding pipelines; through the matching of the short flanges 3-3 on the unequal-side channel steel 3 and the clamping grooves on the horizontal prefabricated composite floor slab 11, a mortise-tenon joint structure is formed between the unequal-side channel steel 3 and the horizontal prefabricated composite floor slab 11, so that the connection stability between horizontal beams and composite slabs can be effectively improved, and the horizontal prefabricated composite slab 11 and the horizontal beams can be positioned and connected. Through reserving pre-buried tie bars on the horizontal beam and reserving reserved ducts corresponding to the pre-buried tie bars on the upper prefabricated shear wall 8, the lower prefabricated shear wall 9 and the horizontal prefabricated composite floor slab 11, the connection between the horizontal beam and the prefabricated shear wall is ensured, binding steel bars are not needed in connection construction, and additional templates are not needed.
The upper prefabricated shear wall 8 and the lower prefabricated shear wall 9 provided by the invention can also be steel plate shear walls.
Example 3
The embodiment provides a prefabricated floor slab connecting method, which is mainly characterized in that a shear wall and a composite floor slab are connected through a horizontal beam; positioning and installing the lower prefabricated shear wall 9 during installation, hoisting the horizontal beam through hoisting equipment, corresponding pre-buried tie rods on the bottom surface of the horizontal beam to reserved channels on the lower prefabricated shear wall 9 in the hoisting process, gradually inserting the pre-buried tie rods on the bottom surface of the horizontal beam into the reserved channels of the lower prefabricated shear wall 9 one by one, extending extension ends of the pre-buried tie rods on the bottom surface of the horizontal beam into notches 10 on the lower prefabricated shear wall 9, and locking and fixing the extension ends of the pre-buried tie rods on the bottom surface of the horizontal beam and the lower prefabricated shear wall 9 by adopting locking pieces 13; the same method is adopted, the upper prefabricated shear wall is hoisted through hoisting equipment, the embedded bolt rods on the top surface of the horizontal beam correspond to the reserved holes in the upper prefabricated shear wall 8 in the hoisting process, the embedded bolt rods on the top surface of the horizontal beam are gradually inserted into the reserved holes in the upper prefabricated shear wall 8, the extending ends of the embedded bolt rods on the top surface of the horizontal beam extend into the notches 10 in the upper prefabricated shear wall 8, and the extending ends of the embedded bolt rods on the top surface of the horizontal beam and the upper prefabricated shear wall 8 are locked and fixed through the locking pieces 13.
Hoisting the horizontal prefabricated composite floor slab 11 through hoisting equipment, lapping the connecting end of the horizontal prefabricated composite floor slab 11 on the limiting platform 7, and in the lapping process of the horizontal prefabricated composite floor slab 11, inserting the pre-embedded tie bars on the limiting platform 7 into the reserved hole channels of the horizontal prefabricated composite floor slab 11 one by one, after the connecting end of the horizontal prefabricated composite floor slab 11 is completely lapped on the limiting platform 7, the pre-embedded tie bars on the limiting platform 7 completely penetrate through the reserved hole channels of the horizontal prefabricated composite floor slab 11, and locking and fixing the pre-embedded tie bar extending end on the limiting platform 7 and the upper side prefabricated shear wall 8 through adopting the locking piece 13.
In some embodiments, when the unequal-sided channel steel 3 is mounted on the limiting platform 7, the short flanges 3-3 of the unequal-sided channel steel 3 protrude upwards, so that in the process of overlapping the horizontal prefabricated composite floor slab 11 on the limiting platform 7, the clamping grooves in the horizontal prefabricated composite floor slab 11 correspond to the short flanges 3-3 of the unequal-sided channel steel 3, the short flanges 3-3 of the unequal-sided channel steel 3 can be clamped in the clamping grooves in the horizontal prefabricated composite floor slab 11, a clamping structure is formed between the horizontal composite floor slab and the unequal-sided channel steel 3, positioning between a horizontal beam and the horizontal prefabricated composite floor slab 11 is realized, the in-position quality is high, component mounting measures are reduced, the engineering cost is further reduced, after the horizontal prefabricated composite floor slab 11 is mounted, the short flanges 3-3 of the unequal-sided channel steel 3 can limit displacement of the horizontal prefabricated composite floor slab 11 to a certain extent, and connection between the horizontal prefabricated composite floor slab 11 and the short flanges 3-3 of the unequal-sided channel steel 3 is more stable; meanwhile, by adopting the unequal-side channel steel 3, after the connecting end of the horizontal prefabricated composite floor slab 11 is lapped on the unequal-side channel steel 3, the partition wall is formed at the position 3-3 of the short flange of the unequal-side channel steel 3, so that water permeating into the unequal-side channel steel 3 is effectively prevented from directly entering the room, the water seepage path of the traditional connection is changed, a good water stopping effect can be achieved, and the water leakage problem caused by cracking among the assembled components is effectively avoided.
In some embodiments, the horizontal beam is formed by welding a square steel pipe 1, a small-section channel steel 4 and two high-section channel steels 2, the long flanges 3-1 of the two unequal-side channel steels 3 are higher than the top of the square steel pipe 1, so that the lower prefabricated shear wall 9 and the upper prefabricated shear wall 8 are inserted into the opening of the small-section channel steel 4 when the lower prefabricated shear wall 9 and the upper prefabricated shear wall 8 are installed, the connecting end of the lower prefabricated shear wall 9 is inserted between the long flanges 3-1 of the two unequal-section channel steels 3, the connecting end of the upper prefabricated shear wall 8 is fixedly connected with the top of the square steel pipe 1, and the connecting end of the upper prefabricated shear wall 8 is fixedly connected with the small-section channel steel 4.
In some embodiments, before the horizontal prefabricated composite floor slab 11 is erected, a small amount of fine stone concrete is poured on the unequal-sided channel steel 3, nuts for locking the unequal-sided channel steel 3 are covered in the fine stone concrete by the small amount of fine stone concrete, a fine stone concrete pouring layer 12 is formed on the unequal-sided channel steel 3, and after the horizontal prefabricated composite floor slab 11 is well overlapped, structural adhesive is poured into the joint of the horizontal prefabricated composite floor slab 11 and the unequal-sided channel steel 3; meanwhile, structural adhesive can be injected between the upper prefabricated shear wall and the square steel pipe 1 and between the long flanges 3-1 of the unequal-side channel steel 3 and between the lower prefabricated shear wall and the small-section channel steel 4.
In the description of the present specification, reference to the description of "one embodiment/mode", "some embodiments/modes", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "a plurality" means at least two, such as two or three, etc., unless explicitly specified otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the invention. Other variations or modifications will be apparent to persons skilled in the art in light of the above disclosure and which are within the scope of the invention.
Claims (7)
1. The prefabricated profile steel horizontal beam is characterized in that the cross section of the horizontal beam is in a convex shape, the horizontal beam is a profile steel combined component, limiting platforms (7) are arranged on two sides of the horizontal beam, connecting pieces (6) are arranged on the top surface of the horizontal beam, the bottom surface of the horizontal beam and the two limiting platforms (7), and at least two connecting pieces (6) are arranged on the top surface of the horizontal beam, the bottom surface of the horizontal beam and the two limiting platforms (7); the horizontal beam comprises a square steel pipe (1), a small-section channel steel (4) and two high-section channel steels (2), wherein the two high-section channel steels (2) are oppositely arranged left and right, the square steel pipe (1) is jointly installed on the upper flanges of the two high-section channel steels (2), the small-section channel steel (4) is jointly installed between the lower flanges of the two high-section channel steels (2), and the opening of the small-section channel steel (4) faces outwards; unequal-side channel steel (3) is mounted on each of the two limiting platforms (7), long flanges (3-1) of the unequal-side channel steel (3) are fixed with the square steel pipe (1), and webs (3-2) of the unequal-side channel steel (3) are fixed with the high-section channel steel (2); the unequal-side channel steel (3) is also provided with an oblique welding steel plate (3-4) which is used for connecting a web plate (3-2) of the unequal-side channel steel (3) and a short flange (3-3) of the unequal-side channel steel (3); a fine aggregate concrete pouring layer (12) is arranged in the unequal-sided channel steel (3); the long flange (3-1) of the unequal-side channel steel (3) is higher than the square steel pipe (1).
2. Prefabricated steel sectional sleeper beam according to claim 1, characterized in that the connectors (6) on the bottom surface of the sleeper beam are located in small section channel beams (4).
3. The precast steel horizontal beam as claimed in claim 1, wherein two oblique stiffening plates (5) are further arranged in the horizontal beam, and the upper ends of the two oblique stiffening plates (5) support the two limiting platforms (7) respectively.
4. A prefabricated floor slab connecting structure is characterized by comprising the horizontal beam as claimed in claim 1, 2 or 3, and further comprising an upper prefabricated shear wall (8), a lower prefabricated shear wall (9) and two horizontal prefabricated composite floor slabs (11), wherein the upper prefabricated shear wall (8) is fixed on the top surface of the horizontal beam, the lower prefabricated shear wall (9) is fixed on the bottom surface of the horizontal beam, and the connecting ends of the two horizontal prefabricated composite floor slabs (11) are respectively lapped on the two limiting platforms (7) to form the connecting structure taking the horizontal beam as the center.
5. The precast floor slab connection structure according to claim 4, wherein the side walls of the upper precast shear wall (8) and the lower precast shear wall (9) are provided with notches (10), and the connecting members (6) extend into the notches (10) for locking.
6. A precast floor slab connection method is characterized by comprising the precast floor slab connection structure according to claim 4, wherein the lower precast shear wall (9) is positioned and installed, the horizontal beam is installed on the lower precast shear wall (9), the upper precast shear wall (8) is fixed on the top surface, the connecting ends of the two horizontal precast composite floor slabs (11) are respectively overlapped on the two limiting platforms (7), and are respectively fixed with the upper precast shear wall (8), the lower precast shear wall (9) and the horizontal precast composite floor slabs (11) through the top surface of the horizontal beam, the bottom surface of the horizontal beam and the connecting pieces (6) of the two limiting platforms (7).
7. The precast floor slab connection method according to claim 6, wherein the fine stone concrete is poured on the position limiting platform (7) before the horizontal precast composite floor slab (11) is installed.
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