WO2023123321A1 - 一种大跨度预制装配式结构 - Google Patents

一种大跨度预制装配式结构 Download PDF

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Publication number
WO2023123321A1
WO2023123321A1 PCT/CN2021/143582 CN2021143582W WO2023123321A1 WO 2023123321 A1 WO2023123321 A1 WO 2023123321A1 CN 2021143582 W CN2021143582 W CN 2021143582W WO 2023123321 A1 WO2023123321 A1 WO 2023123321A1
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Prior art keywords
steel
steel pipe
main
column
secondary beam
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PCT/CN2021/143582
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English (en)
French (fr)
Inventor
陈云
刘玉博
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海南大学
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Application filed by 海南大学 filed Critical 海南大学
Priority to PCT/CN2021/143582 priority Critical patent/WO2023123321A1/zh
Publication of WO2023123321A1 publication Critical patent/WO2023123321A1/zh

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/30Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/342Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/58Connections for building structures in general of bar-shaped building elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/30Columns; Pillars; Struts
    • E04C3/36Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08Members specially adapted to be used in prestressed constructions
    • E04C5/12Anchoring devices

Definitions

  • the invention relates to the technical field of frame structure assembly in the field of civil engineering and construction, in particular to a large-span prefabricated assembly structure.
  • prefabricated buildings is one of the focuses of the reform of the construction industry in recent years, and it is also one of the green buildings vigorously advocated by the state. In the current field of housing construction and civil engineering, prefabricated building structures are being used more and more.
  • the current prefabricated building structure still has problems such as limited span, low flexibility in the use of building space, and difficulties in routing pipelines with solid beams.
  • the present invention provides a long-span prefabricated assembly structure, through the organic combination of long-span prefabricated beams and multiple steel tube concrete columns, in order to provide a long-span frame structure, thus helping to solve the current construction industry There are problems of limited span and low functional flexibility of building space.
  • the present invention provides the following technical solutions:
  • a long-span prefabricated prefabricated structure including long-span prefabricated beams and a plurality of steel tube concrete columns;
  • the long-span prefabricated beam includes multiple main beams and multiple secondary beams; multiple main beams can surround and form a large-span prefabricated beam frame, and multiple secondary beams are cross-connected in the large-span prefabricated beam frame,
  • the plurality of concrete-filled steel tube columns are used for one-to-one assembly and connection with a plurality of corners of the frame of the large-span prefabricated beam, and the main beam and the secondary beam are both prestressed steel frame beam structures;
  • the main girder includes: the lower steel pipe of the main girder, the upper steel pipes of two main girders, the connecting section steel of the main girder, the prestressed tendons of the main girder and the concrete of the main girder;
  • the two upper steel pipes of the main girder are arranged flush; the lower steel pipes of the main girder are respectively parallel to the two upper steel pipes of the main girder, and are located below the middle of the two upper steel pipes of the main girder; the lower steel pipes of the main girder
  • the two steel pipes on the upper part of the main beam are connected by the connecting section steel of the main beam; the prestressed tendons of the main beam are arranged in the steel pipes on the lower part of the main beam; In the lower steel pipe of the main beam and the two upper steel pipes of the main beam.
  • the secondary beam includes: a steel pipe in the lower part of the secondary beam, two steel pipes in the upper part of the secondary beam, connecting section steel of the secondary beam, prestressed tendons of the secondary beam and concrete of the secondary beam;
  • the two upper steel pipes of the secondary beam are arranged flush; the lower steel pipes of the secondary beam are respectively parallel to the two upper steel pipes of the secondary beam, and are located below the middle of the two upper steel pipes of the secondary beam; the lower steel pipes of the secondary beam
  • the three steel pipes at the upper part of the secondary beam are connected by the connecting section steel of the secondary beam; the prestressed tendons of the secondary beam are arranged in the steel pipe at the lower part of the secondary beam; the concrete of the secondary beam is poured separately In the lower steel pipe of the secondary beam and the two upper steel pipes of the secondary beam.
  • the ends of the two upper steel pipes of the secondary beam are connected to the pipe wall of the upper steel pipe of the main beam close to the secondary beam;
  • the long-span prefabricated beam also includes angle steel
  • the length of the steel pipe at the lower part of the secondary beam is greater than the length of the steel pipe at the upper part of the secondary beam, and its end protrudes above the steel pipe at the lower part of the main beam; the steel pipe at the lower part of the secondary beam and the steel pipe at the lower part of the main beam pass The angle steel connection;
  • the ends of the two upper steel pipes of the secondary beam are connected to the pipe walls of the adjacent steel pipes in the upper part of the secondary beam; the ends of the steel pipes in the lower part of the secondary beam are connected to the pipe walls of the adjacent steel pipes in the lower part of the secondary beam.
  • the main girder connection section steel connected between two of the main girder upper steel pipes the main girder connection section steel connected between one of the main girder upper steel pipes and the main girder lower steel pipe, and
  • the number of the main girder connecting section steels connected between the steel pipes at the upper part of the main girder and the steel pipes at the lower part of the main girder is multiple, and all of them are arranged end to end in an N shape;
  • the number of the secondary beam connecting section steels between one secondary beam upper steel pipe and the secondary beam lower steel pipe is multiple, and all of them are arranged end to end in an N shape.
  • the main beam further includes: two main beam anchors;
  • the two ends of described main girder prestressed tendon are fixed on the two ends of described main girder bottom steel pipe one by one by two described main girder anchors respectively;
  • the secondary beam also includes: two secondary beam anchors;
  • the two ends of the prestressed tendon of the secondary beam are respectively fixed to the two ends of the steel pipe at the lower part of the secondary beam through the two secondary beam anchors.
  • the concrete-filled steel tube column is built with a steel pipe in the column, and two pouring reserved openings are opened at the beam-column node for docking with the corresponding corners of the long-span prefabricated beam frame, and the pouring prefabricated The opening is connected to the pipe wall of the steel pipe in the column.
  • the outer diameter of the steel pipe in the column is greater than the span of the two upper steel pipes of the main girder;
  • the pipe wall of the steel pipe in the column is assembled and connected;
  • the end of the steel pipe at the lower part of the main beam is located in the pouring reserved opening, and is assembled and connected with the pipe wall of the steel pipe in the column;
  • the concrete filled steel pipe column also includes two steel plates; It is located on both sides of the pipe wall of the pouring reserved opening, and the pouring reserved opening extends inward to communicate with the two steel plates; the ends of the two steel pipes in the upper part of the main beam are located at the pouring reserved In the opening, and respectively assembled and connected with the two steel plates; the end of the steel pipe at the lower part of the main beam is located in the pouring reserved opening, and assembled and connected with the pipe wall of the steel pipe in the column.
  • the steel pipe concrete column also includes an end plate of the steel pipe in the column and a cantilever beam; the cantilever beam is arranged at The steel pipe in the column is opposite to the pipe wall of the pouring reserved opening; the end plate of the steel pipe in the column is vertically connected with the end of the cantilever beam; the main beam also includes a main beam end plate: the main beam The beam end plate is vertically connected with the ends of the lower steel pipe of the main beam and the two upper steel pipes of the main beam; the end plate of the steel pipe in the column and the end plate of the main beam are assembled and connected by a high-strength bolt assembly;
  • the steel pipe concrete column also includes a steel pipe end plate in the column and a cantilever beam; the cantilever beams are vertically arranged respectively
  • the steel pipe end plate in the column is vertically connected with the end of the cantilever beam;
  • the main beam also includes a main beam end plate: the main beam end plate is respectively connected to the lower part of the main beam
  • the steel pipes are vertically connected to the ends of the two upper steel pipes of the main girder; the end plates of the steel pipes in the column are connected to the end plates of the main girder through alignment assembly of high-strength bolt assemblies.
  • the material of the high-strength bolts of the high-strength bolt assembly includes a superelastic shape memory alloy.
  • the concrete-filled steel pipe column also includes structural steel bars in the column, seam welded spiral stirrups, concrete and steel pipes in the column;
  • the steel pipe in the column is arranged in the structural steel bar in the column; the seam welded spiral stirrup is arranged in the outer peripheral wall of the steel pipe in the column; the concrete is poured in the steel pipe in the column and in the column Reinforcing bars are constructed, and the concrete is provided with the pouring reservation opening.
  • it also includes: a floor deck arranged on the top of the long-span prefabricated beam.
  • a large-span frame structure is provided through the organic combination of large-span prefabricated beams and multiple steel tube concrete columns A, thereby contributing to It aims to solve the problems of limited span and low flexibility of building space use functions in the current construction industry.
  • Fig. 1 is the general plan view of the large-span prefabricated assembly structure provided by the embodiment of the present invention
  • Fig. 2 is a schematic diagram of the reserved beam-column node of the large-scale steel pipe concrete column provided by the embodiment of the present invention
  • Fig. 3 is a schematic diagram of the reserved beam-column nodes of the small-sized steel pipe concrete column provided by the embodiment of the present invention.
  • Fig. 4 is a detailed assembly diagram of the reserved beam-column node of the small-sized steel pipe concrete column provided by the embodiment of the present invention.
  • Fig. 5 is a longitudinal section view at the beam-column node provided by the embodiment of the present invention.
  • Fig. 6 is a detailed diagram of the connection between the secondary beam and the main beam provided by the embodiment of the present invention.
  • Fig. 7 is a detailed diagram of the connection between the secondary beam and the secondary beam provided by the embodiment of the present invention.
  • Fig. 8 is a schematic diagram of the position of the connection between the concrete filled steel pipe beam and the floor deck and the position of the pipeline passing through the beam provided by the embodiment of the present invention
  • Fig. 9 is a schematic diagram of the connection mode between steel pipes in the long-span prefabricated beam provided by the embodiment of the present invention.
  • the large-span prefabricated assembly structure provided by the embodiment of the present invention, as shown in Figure 1, includes a large-span prefabricated beam and a plurality of steel tube concrete columns A;
  • the long-span prefabricated beam includes multiple main beams C and multiple secondary beams D; multiple main beams C can surround the large-span prefabricated beam frame, multiple secondary beams D are cross-connected in the long-span prefabricated beam frame, and multiple steel pipe concrete Column A is used for one-to-one assembly and connection with multiple corners of the long-span prefabricated beam frame, and the main beam C and secondary beam D are both prestressed steel frame beam structures;
  • the main girder C includes: the lower steel pipe 6 of the main girder, the two upper steel pipes 5 of the main girder, the connecting section steel 13 of the main girder, the prestressed tendon 9 of the main girder and the concrete 20 of the main girder;
  • the two main girder upper steel pipes 5 are arranged flush; the main girder lower steel pipes 6 are respectively parallel to the two main girder upper steel pipes 5 and are located below the middle of the two main girder upper steel pipes 5; the main girder lower steel pipes 6 are connected to the two main girders.
  • the main girder prestressed tendon 9 is arranged in the steel pipe 6 at the lower part of the main girder, so as to enhance the tensile performance of the steel pipe 6 at the lower part of the main girder; .
  • the frame of the long-span prefabricated beam in this scheme is a square frame;
  • the secondary beam D includes a long secondary beam and a short secondary beam; among them, the first pair of main beams C
  • the first pair of main beams C There are multiple long secondary beams connected between them; there are multiple short secondary beams connected between the single beam of the second pair of main beams C of the large-span prefabricated beam frame and the long secondary beams, and between two adjacent long secondary beams; that is That is, the secondary beam in this scheme is not only connected to the main beam, but also cross-connected with its adjacent secondary beams.
  • this scheme only sets the steel tube concrete column A at the corner of the long-span prefabricated beam, while the rest has no columns, and the strong support can be provided by the steel tube concrete column A, and based on the long-span prefabricated beam
  • the stress steel frame beam structure has good span performance, especially the triangular steel frame structure of the main beam C has good tensile performance and stability, which helps to provide a long-span frame structure, making this
  • the structure has high flexibility, that is, it can provide a large enough frame space without obstacles, allowing users to change and adjust the size of the space at will, and can fully meet the different needs of users.
  • a long-span frame structure is provided through the organic combination of long-span prefabricated beams and multiple steel tube concrete columns A, thereby It helps to solve the problems of limited span and low functional flexibility of building space in the current construction industry.
  • the secondary beam D includes: the steel pipe 17 at the lower part of the secondary beam, the steel pipes 18 at the upper part of the two secondary beams, the connecting steel 19 of the secondary beam, the prestressed tendon 21 of the secondary beam and the concrete 22 of the secondary beam;
  • the two upper steel pipes 18 of the secondary beam are arranged flush; the lower steel pipes 17 of the secondary beam are respectively parallel to the upper steel pipes 18 of the two secondary beams, and are located below the middle of the upper steel pipes 18 of the two secondary beams; Two of the three upper steel pipes 18 are connected by the secondary beam connecting section steel 19; this scheme is to realize the connection and fixation of the three secondary beam steel pipes through the secondary beam connecting section steel 19, so as to form a triangular steel frame secondary beam.
  • the secondary beam prestressed tendon 21 is arranged in the steel pipe 17 at the lower part of the secondary beam, so as to enhance the tensile performance of the steel pipe 17 at the lower part of the secondary beam; .
  • the single girder of the long-span prefabricated girder in this scheme (including the main girder and the secondary girder) is composed of two upper steel pipes, a lower steel pipe and a connecting section steel for connecting the three steel pipes, and the inner steel pipes of the lower steel pipes are all Prestressed tendons are provided to bear the tensile force, and concrete is poured into the three steel pipes to form steel pipe concrete.
  • This scheme is designed in such a way that it has the characteristics of simple structure, light structure and good spanning performance. More importantly, compared with the traditional reinforced concrete beam, the long-span prefabricated beam of this scheme is a hollow prestressed steel frame beam structure.
  • the end of the long secondary beam is connected to the main beam; wherein, as shown in Figure 6, the connection mode between the end of the long secondary beam and the main beam is specifically: two steel pipes on the upper part of the secondary beam The end of 18 is connected with the pipe wall of the steel pipe 5 at the top of the main beam near the secondary beam D;
  • the long-span prefabricated beam also includes angle steel 10;
  • the length of secondary beam bottom steel pipe 17 is greater than the length of secondary beam top steel pipe 18, and its end stretches into the top of main beam bottom steel pipe 6;
  • Secondary beam bottom steel pipe 17 is connected by angle steel 10 between main beam bottom steel pipe 6. That is to say, the main beam and the secondary beam in the long-span prefabricated beam are connected by welding the two upper steel pipes of the secondary beam directly to the upper steel pipe of the main beam, and the length of the lower steel pipe of the secondary beam is longer than the length of the upper steel pipe.
  • the end of the short secondary beam is connected to the long secondary beam; wherein, as shown in Figure 7, the connection mode between the end of the short secondary beam and the long secondary beam is specifically: two secondary beams
  • the end of beam upper steel pipe 18 is connected with the pipe wall of adjacent secondary beam upper steel pipe 5; the end of secondary beam lower steel pipe 17 is connected with the pipe wall of adjacent secondary beam lower steel pipe 17.
  • the connection method of the two secondary beams (the long secondary beam and the short secondary beam) in the long-span prefabricated beam is: the upper steel pipe corresponding to the two secondary beams is welded to the upper steel pipe, and the lower steel pipe is welded to the lower steel pipe.
  • the main beam connection section steel 13 connected between two main beam upper steel pipes 5, the main beam connection section steel 13 connected between one main beam upper steel pipe 5 and the main beam lower steel pipe 6, and the number of main beam connecting section steels 13 connected between the steel pipes 5 at the upper part of the main beam and the steel pipes 6 at the lower part of the main beam are multiple, and all of them are arranged in an N-shaped arrangement end to end; that is to say, the main beam
  • the connection shape of the connection section steel 13 in each connection area is N-shaped, so that the main beam can form a triangular staggered truss beam structure, which can help to further improve the structural rigidity and stability of the main beam;
  • the secondary beam connection section steel 19 that is connected between two secondary beam upper steel pipes 18, the secondary beam connection section steel 19 that is connected between the secondary beam upper steel pipe 18 and the secondary beam lower steel pipe 17, and the secondary beam top steel pipe that is connected The number of secondary beam connecting section steel 19 between 18 and the steel pipe 17 at the lower part of the secondary beam is multiple, and all of them are arranged in an N shape connected end to end.
  • the connection shape of the secondary beam connection section steel 19 in each connection area is N-shaped, so that the secondary beam can form a triangular staggered truss beam structure, which can help to further improve the structural rigidity and Stability, which is conducive to further improving the overall structural rigidity and stability of long-span precast beams.
  • the main beam C also includes: two main beam anchors 11;
  • the two ends of the main girder prestressed tendon 9 are respectively fixed to the two ends of the steel pipe 6 at the lower part of the main girder through two main girder anchors 11.
  • the secondary beam D also includes: two secondary beam anchors;
  • the two ends of the secondary beam prestressed tendon 21 are respectively fixed to the two ends of the steel pipe 17 at the lower part of the secondary beam by two secondary beam anchors. Fastening installation in the steel pipe 17.
  • the steel pipe 3 in the column is built into the concrete-filled steel tube column A, and two pouring reservations are provided at the beam-column joints for docking and matching with the corresponding corners of the long-span prefabricated beam frame. mouth, and each pouring reserved opening is connected to the pipe wall of the steel pipe 3 in the column. That is to say, this scheme reserves enough pouring openings at the beam-column joints of the prefabricated steel tube concrete column A for on-site welding with the main beam on one side (the steel pipe 3 in the column is welded to the main beam), and when the site is connected with the main beam After the beams are connected, high-pressure shotcrete is carried out on the pouring reserved opening and finally smoothed.
  • This scheme is designed in such a way that it is easy to realize the prefabricated connection between the long-span prefabricated beam and multiple steel tube concrete columns A, so that the long-span frame structure of this scheme has the characteristics of fast construction progress and high construction efficiency.
  • the end of the main girder is connected to the steel pipe concrete column A;
  • the specific connection method of the two is: when the outer diameter of the steel pipe 3 in the column is greater than the span of the two upper steel pipes 5 of the main girder;
  • the ends of the steel pipes 5 on the upper part of the main girder are respectively located in the openings reserved for pouring, and are assembled and connected with the pipe walls of the steel pipes 3 in the column; assembly connection;
  • the CFST column A also includes two steel plates 7; as shown in Figures 3 and 4, the two steel plates 7 are respectively arranged on the column
  • the middle steel pipe 3 pairs are located on both sides of the pipe wall of the pouring reserved opening, and the pouring reserved opening extends inward to connect with the two steel plates 7; the ends of the two main beam upper steel pipes 5 are located in the pouring reserved opening, and respectively It is assembled and connected with two steel plates 7; the end of the steel pipe 6 at the lower part of the main beam is located in the pouring reserved opening, and is assembled and connected with the pipe wall of the steel pipe 3 in the column.
  • beam-column angle steel can also be added between the end of the steel pipe 6 at the lower part of the main beam and the pipe wall of the steel pipe 3 in the column, so as to further enhance the connection strength between the two.
  • this scheme includes the connection method between the steel pipe 3 and the main beam in the large-size column, and the connection method between the steel pipe 3 and the main beam in the small-size column.
  • the steel plate 7 can be welded at the corresponding position to increase the connection area (as shown in Figure 3), so as to ensure that the main beam can be connected with the steel pipe 3 in the small-sized column .
  • the CFST column A also includes the end plate of the steel pipe in the column and the cantilever beam; the cantilever beam is arranged on the 3 pairs of steel pipes in the column
  • the pipe wall located at the pouring reserved opening; the end plate of the steel pipe in the column is vertically connected with the end of the cantilever beam;
  • the main beam C also includes the main beam end plate: the main beam end plate is connected with the steel pipe 6 at the lower part of the main beam and the two main beams respectively
  • the ends of the upper steel pipe 5 are vertically connected (end plate stiffeners can be added between the main beam end plate and the main beam steel tube); the end plate of the steel pipe in the column and the main beam end plate are assembled and connected by high-strength bolt assemblies; that is, When the steel pipe 3 in the column is a large-sized steel pipe in the column, it can be connected through the alignment assembly and connection of the end plate of
  • the CFST column A also includes the end plate of the steel pipe in the column and the cantilever beam; the cantilever beam is vertically arranged on the two steel plates 7
  • the end plate of the steel pipe in the column is vertically connected with the end of the cantilever beam;
  • the main beam C also includes the end plate of the main beam: the end plate of the main beam is vertically connected with the ends of the steel pipe 6 in the lower part of the main beam and the steel pipe 5 in the upper part of the two main beams respectively (End plate stiffeners can be added between the end plate of the main beam and the steel pipe of the main beam); the end plate of the steel pipe in the column and the end plate of the main beam are connected by alignment assembly of high-strength bolt components.
  • the end plate of the steel pipe in the column can be assembled and connected with the end plate of the main beam to realize the corner of the large-span prefabricated beam and the built-in
  • the prefabricated connection of steel pipe and concrete-filled steel pipe column A in a small-sized column has the characteristics of simple structure, stable and reliable assembly and splicing; of course, the steel pipe end plate in the column and the main beam end plate are equipped with alignment bolt holes.
  • the high-strength bolts of the high-strength bolt assembly are made of superelastic shape memory alloy rods, which have superelastic deformation capabilities, and can dissipate the vibration energy of the nodes through deformation during strong earthquakes, so that the nodes will not be damaged after the earthquake.
  • the steel tube concrete column A includes structural reinforcement in the column, seam welded spiral stirrup 8, concrete 2 and steel pipe 3 in the column;
  • the steel pipe 3 in the column is set in the structural steel bar in the column; the seam welded spiral stirrup 8 is set on the outer peripheral wall of the steel pipe 3 in the column, which is used to strengthen the shear bearing capacity of the steel pipe 3 in the column, and to increase the connection between the steel pipe 3 in the column and the external concrete.
  • the bond strength; the concrete 2 is respectively poured in the steel pipe 3 in the column and the structural steel bar in the column, and the concrete 2 is provided with a pouring opening.
  • the CFST column A of this scheme is designed in this way, which has better compressive strength and higher bearing capacity.
  • the large-span prefabricated structure provided by the embodiment of the present invention further includes: a floor deck 15 arranged on the top of the long-span prefabricated beam.
  • the floor deck 15 can be connected and fixed with the long-span prefabricated beam through bolts, and then concrete is poured on the floor deck 15 .
  • the amount of concrete can be reduced, a large number of temporary formwork can be saved, most of the formwork support can be omitted, and it can also be used as tensile reinforcement to reduce the installation of reinforcement, thereby helping to reduce the construction process. , shorten the construction period and reduce the project cost.
  • the purpose of the present invention is to provide a large-span assembly and splicing structure, which is used to solve the problems of pipeline separation and functional flexibility in the current construction industry.
  • the invention provides a long-span prefabricated structure, which is a long-span frame structure. Including steel tube concrete column A and long-span prefabricated beams (including main beams and secondary beams);
  • the concrete-filled steel tube column A includes four-corner structural longitudinal reinforcement, steel pipe 3 in the column, stirrups and roll-welded spiral stirrup 8, wherein the four-corner structural longitudinal reinforcement is not stressed, and the size of the steel pipe 3 in the column is determined according to the actual situation.
  • the steel pipe 3 in the column is small, it is not enough to be fully connected with the beam, and the steel plate 7 can be welded at the corresponding position to increase the connection area (as shown in Figure 3).
  • the steel plate 7 connected by the upper steel pipe 5 is then welded to the steel pipe 7 on the upper part of the two main beams and the corresponding steel plate 7 by means of Fig. 4, and the steel pipe 6 on the lower part of the main beam is welded to the steel pipe 3 in the column;
  • Large-span prefabricated beams including main beams and secondary beams
  • two upper steel pipes including main beams and secondary beams
  • lower steel pipes prestressed tendons, angle steel 10, anchors, backing plates and connecting steel, and concrete in steel pipes.
  • the upper two steel pipes and the upper steel pipe and the lower steel pipe are welded to form a staggered truss structure, and the welding shape of the connecting steel is "N" (as shown in Figure 9).
  • This structure has high flexibility, which is embodied in that the columns of this structure are only set at the four corners of the structure, and the rest of the structure has no columns, and the size of the columns is not large.
  • the structure can provide a large enough space and is barrier-free, allowing users to change and adjust the size of the room at will, which can fully meet the needs of users.
  • the concrete in the steel pipe in the column can be poured on site, but the rest should be prefabricated in the factory; the outer roll-welded spiral stirrup 8 of the steel pipe in the column is used to strengthen the shear bearing capacity of the steel pipe And increase the bond between the steel pipe and the external concrete.
  • connection method is welded connection, that is, the steel pipes in the column and the steel pipes in the beam are connected together by welding.
  • the biggest difference between this long-span prefabricated beam and the traditional concrete beam is that the middle part is empty, only two steel pipes in the upper part and one steel pipe in the lower part are welded by connecting steel, and the other places are empty, so the supporting facilities of the house - hydropower Line pipes can pass through the gap between the upper steel pipe and the lower steel pipe of the beam (as shown in Figure 8), so as to achieve the purpose of separating beams, columns, plates and pipelines; during the decoration stage, the pipelines and large-span prefabricated beams are covered by the ceiling
  • the height of the suspended ceiling is at least the vertical distance from the bottom end of the long-span prefabricated beam to the upper floor.
  • the exterior of this long-span prefabricated beam needs to be painted with fire-proof and anti-corrosion coatings to improve its durability, and it should also be maintained regularly.
  • the prestressed tendons in the lower steel pipe (main beam and secondary beam) mainly bear the tensile force, and the prestressed tendons are stretched by post-tensioning and anchored to the end of the lower steel pipe with anchors (the specific position is shown in Figure 5 ); the role of the angle steel is to strengthen the connection between the steel pipe in the column and the steel pipe in the long-span prefabricated beam.
  • the main beam and the secondary beam are connected in such a way that the upper two steel pipes of the secondary beam are directly connected to the upper steel pipe of the main beam by welding, and the length of the lower steel pipe of the secondary beam is longer than
  • the length of the two upper steel pipes is mainly used to extend them into the gap between the upper steel pipe and the lower steel pipe of the main beam, and then connect them to the steel pipes of the main beam through angle steel (as shown in Figure 6);
  • the connection mode of the secondary beam and the secondary beam is: the corresponding upper steel pipe is welded with the upper steel pipe, and the lower steel pipe is welded with the lower steel pipe.
  • the floor slabs in the long-span frame structure can be prefabricated laminated slabs or floor slabs plus cast-in-place; wherein, the floor slabs are connected and fixed with long-span prefabricated beams by bolts, and then concrete is poured on the floor slabs.
  • the use of floor decks can reduce the amount of concrete, save a lot of temporary formwork, save most of the formwork support, and can also be used as tensile reinforcement to reduce the installation of reinforcement, thereby reducing construction links, shortening the construction period, and reducing project costs.
  • Water pipes can pass through the gap between the upper steel pipe and the lower steel pipe of the beam (as shown in Figure 8), so as to achieve the purpose of separating the beam, column, plate and pipeline. In the event of problems with some lines or pipelines, it is convenient to overhaul, repair and replace in time.
  • the prefabrication work is completed in the factory, and the splicing is carried out on site.
  • the long-span prefabricated beams involved can be well Solve the problems of pipeline separation and pipeline maintenance and replacement in the current stage of housing construction.
  • another feature of the present invention is the large-span frame structure, which can well solve the problem of functional flexibility encountered in the current stage of housing construction.
  • the size of the required space can be changed at will according to the needs of the owner.
  • the invention has the advantages of simple on-site operation, fast construction progress and high construction efficiency; the node structure design is greatly simplified, which is convenient for factory prefabrication and easy to replace and disassemble.
  • the present invention provides a large-span prefabricated assembly structure, which is a large-span frame structure, including prefabricated concrete columns with steel pipes in the middle of the four corners as structural reinforcement (the columns are only distributed at the four corners of the frame structure) and large Span prefabricated beams, prefabricated concrete columns at the beam-column joints reserve enough parts to be connected with the beams on site without concrete pouring, and after the site is connected with the beams, high-pressure shotcrete is performed on this unconcreted part, and finally smoothed .
  • the concrete in the steel pipe in the precast concrete column can be post-cast on site in order to facilitate transportation and reduce transportation costs, but other parts need to be prefabricated in the factory;
  • the large-span prefabricated beam is composed of the upper steel pipe, the lower steel pipe and the joint used to connect the two steel pipes It is composed of section steel, and a prestressed tendon is placed in the lower steel pipe to bear the tensile force.
  • the upper and lower parts of the steel pipe concrete are welded together through the connecting section steel.
  • the welding method is two-two connection, and the connection shape of the connecting section steel is "N". glyph.
  • the assembly structure of the present invention is mainly used to solve the problem of separation of pipelines and the flexibility of use functions encountered in building construction at the present stage. In the future, the development direction of Chinese architecture should be towards more energy-saving, green, more durable and more flexible.

Abstract

本发明公开了一种大跨度预制装配式结构,包括大跨度预制梁和多个钢管混凝土柱;所述大跨度预制梁包括多个主梁和多个次梁;多个所述主梁能够围绕构成大跨度预制梁边框,多个所述次梁交叉连接在所述大跨度预制梁边框内,且所述主梁和所述次梁均为预应力钢架梁结构;多个所述钢管混凝土柱用于同所述大跨度预制梁边框的多个边角一一对应装配连接。在本方案中,通过大跨度预制梁和多个钢管混凝土柱的有机结合,以便于提供一种大跨度框架结构,从而有助于解决目前建筑行业存在的跨度受限和建筑空间使用功能灵活性不高的问题。

Description

一种大跨度预制装配式结构 技术领域
本发明涉及土木工程和建筑领域内框架结构装配技术领域,具体涉及一种大跨度预制装配式结构。
背景技术
发展装配式建筑是近几年来建筑业改革的重点之一,也是国家大力提倡的绿色建筑之一。在目前房屋建筑领域和土木工程领域内,装配式建筑结构得到越来越多的应用。
然而,当前装配式建筑结构还存在跨度受限、建筑空间使用功能灵活性不高和实体梁走管线困难等问题。
发明内容
有鉴于此,本发明提供了一种大跨度预制装配式结构,通过大跨度预制梁和多个钢管混凝土柱的有机结合,以便于提供一种大跨度框架结构,从而有助于解决目前建筑行业存在的跨度受限和建筑空间使用功能灵活性不高的问题。
为实现上述目的,本发明提供如下技术方案:
一种大跨度预制装配式结构,包括大跨度预制梁和多个钢管混凝土柱;
所述大跨度预制梁包括多个主梁和多个次梁;多个所述主梁能够围绕构成大跨度预制梁边框,多个所述次梁交叉连接在所述大跨度预制梁边框内,多个所述钢管混凝土柱用于同所述大跨度预制梁边框的多个边角一一对应装配连接,且所述主梁和所述次梁均为预应力钢架梁结构;
所述主梁包括:主梁下部钢管、两个主梁上部钢管、主梁连接型钢、主梁预应力筋和主梁混凝土;
两个所述主梁上部钢管平齐设置;所述主梁下部钢管分别平行于两个所述主梁上部钢管,且位于两个所述主梁上部钢管中间的下方;所述主梁下部钢管 与两个所述主梁上部钢管这三者两两之间均通过所述主梁连接型钢连接;所述主梁预应力筋设置于所述主梁下部钢管内;所述主梁混凝土分别浇筑于所述主梁下部钢管和两个所述主梁上部钢管内。
优选地,所述次梁包括:次梁下部钢管、两个次梁上部钢管、次梁连接型钢、次梁预应力筋和次梁混凝土;
两个所述次梁上部钢管平齐设置;所述次梁下部钢管分别平行于两个所述次梁上部钢管,且位于两个所述次梁上部钢管中间的下方;所述次梁下部钢管与两个所述次梁上部钢管这三者两两之间均通过所述次梁连接型钢连接;所述次梁预应力筋设置于所述次梁下部钢管内;所述次梁混凝土分别浇筑于所述次梁下部钢管与两个所述次梁上部钢管内。
优选地,两个所述次梁上部钢管的端部与靠近所述次梁的所述主梁上部钢管的管壁连接;
所述大跨度预制梁还包括角钢;
所述次梁下部钢管的长度大于所述次梁上部钢管的长度,且其端部伸进至所述主梁下部钢管的上方;所述次梁下部钢管与所述主梁下部钢管之间通过所述角钢连接;
两个所述次梁上部钢管的端部与相邻的所述次梁上部钢管的管壁连接;所述次梁下部钢管的端部与相邻的所述次梁下部钢管的管壁连接。
优选地,连接在两个所述主梁上部钢管之间的所述主梁连接型钢,连接在一个所述主梁上部钢管与所述主梁下部钢管之间的所述主梁连接型钢,和连接在另一个所述主梁上部钢管与所述主梁下部钢管之间的所述主梁连接型钢的数量均为多个,且均为呈现首尾相连的N字型排布;
连接在两个所述次梁上部钢管之间的所述次梁连接型钢,连接在一个所述次梁上部钢管与所述次梁下部钢管之间的所述次梁连接型钢,和连接在另一个所述次梁上部钢管与所述次梁下部钢管之间的所述次梁连接型钢的数量均为多个,且均为呈现首尾相连的N字型排布。
优选地,所述主梁还包括:两个主梁锚具;
所述主梁预应力筋的两端分别通过两个所述主梁锚具一一固定于所述主 梁下部钢管的两端;
所述次梁还包括:两个次梁锚具;
所述次梁预应力筋的两端分别通过两个所述次梁锚具一一固定于所述次梁下部钢管的两端。
优选地,所述钢管混凝土柱内置有柱中钢管,且其梁柱节点处开设有用于同所述大跨度预制梁边框的相应边角对接配合的两个浇筑预留口,且所述浇筑预留口连通于所述柱中钢管的管壁。
优选地,当所述柱中钢管的外径大于两个所述主梁上部钢管的跨距时;两个所述主梁上部钢管的端部分别位于所述浇筑预留口内,并与所述柱中钢管的管壁装配连接;所述主梁下部钢管的端部位于所述浇筑预留口内,并与所述柱中钢管的管壁装配连接;
或者,当所述柱中钢管的外径小于两个所述主梁上部钢管的跨距时;所述钢管混凝土柱还包括两个钢板;两个所述钢板分别设置于所述柱中钢管对位于所述浇筑预留口的管壁的两侧,且所述浇筑预留口向内延伸至连通两个所述钢板;两个所述主梁上部钢管的端部均位于所述浇筑预留口内,并分别与两个所述钢板装配连接;所述主梁下部钢管的端部位于所述浇筑预留口内,并与所述柱中钢管的管壁装配连接。
优选地,当所述柱中钢管的外径大于两个所述主梁上部钢管的跨距时;所述钢管混凝土柱还包括柱中钢管端板和悬挑梁;所述悬挑梁设置于所述柱中钢管对位于所述浇筑预留口的管壁;所述柱中钢管端板与所述悬挑梁的端部垂直连接;所述主梁还包括主梁端板:所述主梁端板分别与所述主梁下部钢管和两个所述主梁上部钢管的端部垂直连接;所述柱中钢管端板与所述主梁端板通过高强螺栓组件对位装配连接;
或者,当所述柱中钢管的外径小于两个所述主梁上部钢管的跨距时;所述钢管混凝土柱还包括柱中钢管端板和悬挑梁;所述悬挑梁分别垂直设置于两个所述钢板;所述柱中钢管端板与所述悬挑梁的端部垂直连接;所述主梁还包括主梁端板:所述主梁端板分别与所述主梁下部钢管和两个所述主梁上部钢管的端部垂直连接;所述柱中钢管端板与所述主梁端板通过高强螺栓组件对位装配 连接。
优选地,所述高强螺栓组件的高强螺栓的材质包括超弹性形状记忆合金。
优选地,所述钢管混凝土柱还包括柱中构造钢筋、滚焊螺旋箍筋、混凝土和所述柱中钢管;
所述柱中钢管设置于所述柱中构造钢筋内;所述滚焊螺旋箍筋设置于所述柱中钢管的外周壁;所述混凝土分别浇筑于所述柱中钢管内和所述柱中构造钢筋,且所述混凝土开设有所述浇筑预留口。
优选地,还包括:设置于所述大跨度预制梁的顶部的楼承板。
从上述的技术方案可以看出,本发明提供的大跨度预制装配式结构中,通过大跨度预制梁和多个钢管混凝土柱A的有机结合,以便于提供一种大跨度框架结构,从而有助于解决目前建筑行业存在的跨度受限和建筑空间使用功能灵活性不高的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的大跨度预制装配式结构的总平面图;
图2为本发明实施例提供的大尺寸钢管混凝土柱预留的梁柱节点处示意图;
图3为本发明实施例提供的小尺寸钢管混凝土柱预留的梁柱节点处示意图;
图4为本发明实施例提供的小尺寸钢管混凝土柱预留的梁柱节点处拼装详图;
图5为本发明实施例提供的梁柱节点处纵断面图;
图6为本发明实施例提供的次梁与主梁连接详图;
图7为本发明实施例提供的次梁与次梁连接详图;
图8为本发明实施例提供的钢管混凝土梁与楼承板连接及管线穿过梁的位置示意图;
图9为本发明实施例提供的大跨度预制梁中钢管间的连接方式示意图。
A为钢管混凝土柱;B为管线穿过梁的位置;C为主梁;D为次梁;
1为柱中构造纵筋;2为混凝土;3为柱中钢管;4为柱中箍筋;5为主梁上部钢管;6为主梁下部钢管;7为钢板;8为滚焊螺旋箍筋;9为主梁预应力筋;10为角钢;11为主梁锚具;12为垫板;13为主梁连接型钢;14为梁柱角钢;15为楼承板;16为楼承板连接螺栓;17为次梁下部钢管;18为次梁上部钢管;19为次梁连接型钢;20为主梁混凝土;21为次梁预应力筋;22为次梁混凝土。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例提供的大跨度预制装配式结构,如图1所示,包括大跨度预制梁和多个钢管混凝土柱A;
大跨度预制梁包括多个主梁C和多个次梁D;多个主梁C能够围绕构成大跨度预制梁边框,多个次梁D交叉连接在大跨度预制梁边框内,多个钢管混凝土柱A用于同大跨度预制梁边框的多个边角一一对应装配连接,且主梁C和次梁D均为预应力钢架梁结构;
如图6所示,主梁C包括:主梁下部钢管6、两个主梁上部钢管5、主梁连接型钢13、主梁预应力筋9和主梁混凝土20;
两个主梁上部钢管5平齐设置;主梁下部钢管6分别平行于两个主梁上部钢管5,且位于两个主梁上部钢管5中间的下方;主梁下部钢管6与两个主梁 上部钢管5这三者两两之间均通过主梁连接型钢13连接;本方案即为通过主梁连接型钢13以实现三个主梁钢管的连接固定,以便于使其构成三角钢架主梁;主梁预应力筋9设置于主梁下部钢管6内,以便于增强主梁下部钢管6的抗拉性能;主梁混凝土20分别浇筑于主梁下部钢管6和两个主梁上部钢管5内。
需要说明的是,如图1所示,本方案的大跨度预制梁边框为方形边框;次梁D包括长次梁和短次梁;其中,大跨度预制梁边框的第一对主梁C之间连接有多个长次梁;大跨度预制梁边框第二对主梁C的单梁与长次梁之间,和相邻两个长次梁之间连接有多个短次梁;也就是说,本方案中的次梁既和主梁连接,也和其相邻的次梁交叉连接。此外,本方案只在大跨度预制梁的边角设置了钢管混凝土柱A,而其余部分无柱子,且通过钢管混凝土柱A可提供强有力的支撑,并且基于大跨度预制梁单体梁为预应力钢架梁结构,具有较好的横跨性能,尤其是主梁C的三角钢架结构具有较好的抗拉性能和稳定性,从而有助于提供了一种大跨度框架结构,使得本结构拥有较高的灵活性,也就是能够提供足够大的框架空间且无障碍,可供使用者随意更改和调整空间的大小,能够充分满足使用者的不同需求。
从上述的技术方案可以看出,本发明实施例提供的大跨度预制装配式结构中,通过大跨度预制梁和多个钢管混凝土柱A的有机结合,以便于提供一种大跨度框架结构,从而有助于解决目前建筑行业存在的跨度受限和建筑空间使用功能灵活性不高的问题。
在本方案中,如图7所示,次梁D包括:次梁下部钢管17、两个次梁上部钢管18、次梁连接型钢19、次梁预应力筋21和次梁混凝土22;
两个次梁上部钢管18平齐设置;次梁下部钢管17分别平行于两个次梁上部钢管18,且位于两个次梁上部钢管18中间的下方;次梁下部钢管17与两个次梁上部钢管18这三者两两之间均通过次梁连接型钢19连接;本方案即为通过次梁连接型钢19以实现三个次梁钢管的连接固定,以便于使其构成三角钢架次梁;次梁预应力筋21设置于次梁下部钢管17内,以便于增强次梁下部钢管17的抗拉性能;次梁混凝土22分别浇筑于次梁下部钢管17与两个次梁 上部钢管18内。
也就是说,本方案中的大跨度预制梁的单体梁(包括主梁和次梁)均由两个上部钢管、下部钢管和用于连接三个钢管的连接型钢组成,而且下部钢管内均设置有预应力筋来承受拉力,并且三个钢管内均浇筑混凝土形成钢管混凝土。本方案如此设计,具有结构精简、结构轻便和跨越性能良好等特点。更为重要的是,本方案的大跨度预制梁相较于传统钢筋混凝梁,其为中空的预应力钢架梁结构,如图8所示,只有两个上部钢管和一个下部钢管,并通过连接型钢将三个钢管连接起来,其它地方均为中空的,可使得房屋的配套设施-水电线管都可以从上部钢管和下部钢管的间隙通过,从而达到梁与管线分离的目的,而且如遇某些线路或管道出现问题时,同时也方便及时检修、维修和更换。
进一步地,如上文所述的,长次梁的端部与主梁有连接;其中,如图6所示,长次梁的端部与主梁的连接方式具体为:两个次梁上部钢管18的端部与靠近次梁D的主梁上部钢管5的管壁连接;
大跨度预制梁还包括角钢10;
次梁下部钢管17的长度大于次梁上部钢管18的长度,且其端部伸进至主梁下部钢管6的上方;次梁下部钢管17与主梁下部钢管6之间通过角钢10连接。也就是说,大跨度预制梁中主梁与次梁的连接方式为次梁的两个上部钢管直接与主梁的上部钢管通过焊接连接,而次梁的下部钢管的长度要长于其上部钢管的长度,主要便于将次梁的下部钢管伸入到主梁的上部钢管与下部钢管之间的空隙内,然后再通过角钢将其连接在主梁的下部钢管上;本方案中主梁与次梁的连接方式如此设计,具有结构简单、连接简便和连接稳固等特点。
再进一步地,如上文所述的,短次梁的端部与长次梁有连接;其中,如图7所示,短次梁的端部与长次梁的连接方式具体为:两个次梁上部钢管18的端部与相邻的次梁上部钢管5的管壁连接;次梁下部钢管17的端部与相邻的次梁下部钢管17的管壁连接。也就是说,大跨度预制梁中两个次梁(长次梁与短次梁)的连接方式为:两个次梁对应的上部钢管与上部钢管焊接,下部钢管与下部钢管焊接。
具体地,如图9所示,连接在两个主梁上部钢管5之间的主梁连接型钢 13,连接在一个主梁上部钢管5与主梁下部钢管6之间的主梁连接型钢13,和连接在另一个主梁上部钢管5与主梁下部钢管6之间的主梁连接型钢13的数量均为多个,且均为呈现首尾相连的N字型排布;也就是说,主梁连接型钢13在每个连接区域的连接形状为N字形,如此一来,以便于使得主梁能够构成三角交错桁架梁结构,可有助于进一步提升主梁的结构刚性和稳定性;
连接在两个次梁上部钢管18之间的次梁连接型钢19,连接在一个次梁上部钢管18与次梁下部钢管17之间的次梁连接型钢19,和连接在另一个次梁上部钢管18与次梁下部钢管17之间的次梁连接型钢19的数量均为多个,且均为呈现首尾相连的N字型排布。同理地,次梁连接型钢19在每个连接区域的连接形状为N字形,如此一来,以便于使得次梁能够构成三角交错桁架梁结构,可有助于进一步提升次梁的结构刚性和稳定性,从而有利于进一步提升大跨度预制梁整体的结构刚性和稳定性。
在本方案中,主梁C还包括:两个主梁锚具11;
如图5所示,主梁预应力筋9的两端分别通过两个主梁锚具11一一固定于主梁下部钢管6的两端,如此一来,可有助于实现主梁预应力筋9在主梁下部钢管6内的紧固安装;
次梁D还包括:两个次梁锚具;
次梁预应力筋21的两端分别通过两个次梁锚具一一固定于次梁下部钢管17的两端,如此一来,同样可有助于实现次梁预应力筋21在次梁下部钢管17内的紧固安装。
具体地,如图2和图3所示,钢管混凝土柱A内置有柱中钢管3,且其梁柱节点处开设有用于同大跨度预制梁边框的相应边角对接配合的两个浇筑预留口,每个浇筑预留口均连通于柱中钢管3的管壁。也就是说,本方案在预制钢管混凝土柱A的梁柱节点处预留出足够和单侧主梁进行现场焊接(柱中钢管3与主梁焊接)的浇筑预留口,待到现场与主梁连接后,再对该浇筑预留口进行高压喷射混凝土并最后抹平。本方案如此设计,以便于实现了大跨度预制梁与多个钢管混凝土柱A的装配式连接,使得本方案的大跨度框架结构具有施工进度快、施工效率高等特点。
进一步地,如上文可知,主梁端部与钢管混凝土柱A有连接;其两者的连接方式具体为:当柱中钢管3的外径大于两个主梁上部钢管5的跨距;两个主梁上部钢管5的端部分别位于浇筑预留口内,并与柱中钢管3的管壁装配连接;主梁下部钢管6的端部位于浇筑预留口内,并与柱中钢管3的管壁装配连接;
或者,当柱中钢管3的外径小于两个主梁上部钢管6的跨距;钢管混凝土柱A还包括两个钢板7;如图3和图4所示,两个钢板7分别设置于柱中钢管3对位于浇筑预留口的管壁的两侧,且浇筑预留口向内延伸至连通两个钢板7;两个主梁上部钢管5的端部均位于浇筑预留口内,并分别与两个钢板7装配连接;主梁下部钢管6的端部位于所述浇筑预留口内,并与柱中钢管3的管壁装配连接。当然,如图5所示,还可在主梁下部钢管6的端部与柱中钢管3的管壁之间增设梁柱角钢,可进一步增强两者的连接强度。
也就是说,本方案包括了大尺寸柱中钢管3与主梁的连接方式,和小尺寸柱中钢管3与主梁的连接方式。其中,当柱中钢管3为小尺寸不足以和主梁全部连接时,可在相应位置焊接钢板7增加连接面积(如图3所示),以确保主梁与小尺寸柱中钢管3能够连接。
具体地,当柱中钢管3的外径大于两个主梁上部钢管5的跨距时;钢管混凝土柱A还包括柱中钢管端板和悬挑梁;悬挑梁设置于柱中钢管3对位于浇筑预留口的管壁;柱中钢管端板与悬挑梁的端部垂直连接;主梁C还包括主梁端板:主梁端板分别与主梁下部钢管6和两个主梁上部钢管5的端部垂直连接(主梁端板与主梁钢管之间可增设端板加劲肋);柱中钢管端板与主梁端板通过高强螺栓组件对位装配连接;也就是说,当柱中钢管3为大尺寸柱中钢管时,可通过柱中钢管端板与主梁端板的的对位装配连接,以实现大跨度预制梁边角与内置大尺寸柱中钢管的钢管混凝土柱A的装配式连接,此装配连接方式具有结构简单、装配拼接稳定可靠等特点;此外,柱中钢管端板与主梁端板在对应位置均开设有对位的螺栓孔;
或者,当柱中钢管3的外径小于两个主梁上部钢管6的跨距时;钢管混凝土柱A还包括柱中钢管端板和悬挑梁;悬挑梁分别垂直设置于两个钢板7;柱 中钢管端板与悬挑梁的端部垂直连接;主梁C还包括主梁端板:主梁端板分别与主梁下部钢管6和两个主梁上部钢管5的端部垂直连接(主梁端板与主梁钢管之间可增设端板加劲肋);柱中钢管端板与主梁端板通过高强螺栓组件对位装配连接。也就是说,同理地,当柱中钢管3为小尺寸柱中钢管时,可通过柱中钢管端板与主梁端板的的对位装配连接,以实现大跨度预制梁边角与内置小尺寸柱中钢管的钢管混凝土柱A的装配式连接,此装配连接方式具有结构简单、装配拼接稳定可靠等特点;当然,柱中钢管端板与主梁端板在对应位置均开设有对位的螺栓孔。
进一步地,高强螺栓组件的高强螺栓由超弹性形状记忆合金棒材制作而成,具有超弹性变形能力,在强震时能够通过变形耗散节点的振动能量,以使得震后节点无损伤。
再进一步地,如图1和图2所示,钢管混凝土柱A包括柱中构造钢筋、滚焊螺旋箍筋8、混凝土2和柱中钢管3;
柱中钢管3设置于柱中构造钢筋内;滚焊螺旋箍筋8设置于柱中钢管3的外周壁,用于加强柱中钢管3的抗剪承载力,以及增加柱中钢管3与外部混凝土的粘结强度;混凝土2分别浇筑于柱中钢管3内和柱中构造钢筋,且混凝土2开设有浇筑预留口。本方案的钢管混凝土柱A如此设计,具有较好的抗压强度和较高的承载能力。
在本方案中,如图8所示,本发明实施例提供的大跨度预制装配式结构还包括:设置于大跨度预制梁的顶部的楼承板15。其中,楼承板15可通过螺栓与大跨度预制梁连接固定,然后再在楼承板15上浇筑混凝土。本方案通过采用楼承板15,能够减少混凝土的用量,节省大量临时性模板,能够省去大部分的模板支撑,也可作为受拉钢筋使用,减少钢筋的安装,从而有助于减少施工环节,缩短施工工期,降低工程造价。
下面结合具体实施例对本方案作进一步介绍:
本发明的目的是提供一种大跨度装配拼接结构,用于解决目前建筑行业存在的管线分离问题和使用功能灵活性的问题。
本发明提供了一种大跨度预制装配式结构,该结构为大跨度的框架结构。包括钢管混凝土柱A和大跨度预制梁(包括主梁和次梁);
所述钢管混凝土柱A包括四角的构造纵筋、柱中钢管3、箍筋和滚焊螺旋箍筋8,其中四角构造纵筋不受力,柱中钢管3的大小根据实际情况而确定,当柱中钢管3较小时,不足以和梁全部连接时可在相应位置焊接钢板7增加连接面积(如图3所示),具体为在柱中钢管的对应位置两侧分别焊上足够和主梁上部钢管5连接的钢板7,然后通过图4的方式将两个主梁上部钢管5和对应的钢板7焊接,主梁下部钢管6与柱中钢管3焊接;
大跨度预制梁(包括主梁和次梁),包括上部的两根钢管、下部的钢管、预应力筋、角钢10、锚具、垫板和连接型钢以及钢管中的混凝土。其中,上部两根钢管之间以及上部钢管与下部钢管之间通过连接型钢焊接连接形成交错桁架结构,连接型钢的焊接形状为“N”字形(如图9所示)。
本结构拥有较高的灵活性,具体表现在本结构的柱子仅设置在结构的四角,其余部分无柱子,且柱子尺寸不大。本结构能够提供足够大的空间且无障碍,可供使用者随意更改和调整房间的大小,能够充分满足使用者的需求。
为了方便运输,节约运输成本,柱中钢管中的混凝土可到现场后浇,但其余部分均应在工厂预制完成;柱中钢管外侧滚焊螺旋箍筋8其作用为加强钢管的抗剪承载力以及增加钢管与外部的混凝土的粘结。
钢管混凝土柱在梁柱节点处预留出足够和梁进行现场连接的部分不浇筑混凝土,待到现场与梁连接后对这一未浇筑混凝土的部分进行高压喷射混凝土,最后抹平;其中梁柱连接方式为焊接连接,即柱中的钢管与梁的钢管通过焊接的方式连接在一起。
此大跨度预制梁与传统混凝土梁的最大区别在于中部为空的,只有上部的两个钢管和下部的一个钢管并通过连接型钢焊接起来,其他地方均为空的,因此房屋的配套设施-水电线管都可以从梁上部钢管和下部钢管中间的空隙中通过(如图8所示),从而达到梁、柱、板与管线分离的目的;在装修阶段通过吊顶将管线及大跨度预制梁遮挡住,其中吊顶高度至少为大跨度预制梁最下端至上部楼板间的垂直距离。但此大跨度预制梁外部需要涂刷防火、防腐的涂料 提高其耐久性,还应定期维护保养。
下部钢管(主梁和次梁)中的预应力筋主要承受拉力,预应力筋通过后张法张拉预应力筋并用锚具将其锚固在下部钢管的端部(具体位置如图5所示);角钢的作用在于加强柱中钢管与大跨度预制梁中钢管的连接。
大跨度预制梁(包括主梁和次梁)中主梁与次梁的连接方式为次梁的上部两根钢管直接与主梁的上部钢管通过焊接连接,而次梁的下部钢管的长度要长于上部两根钢管的长度,主要用途在于将其伸入到主梁的上部钢管与下部钢管之间的空隙内,然后通过角钢将其连接在主梁的钢管上(如图6所示);另外,次梁与次梁的连接方式为:对应的上部钢管与上部钢管焊接,下部钢管与下部钢管焊接。
大跨度框架结构中的楼板可用预制好的叠合板也可用楼承板加现浇的方式;其中,楼承板通过螺栓与大跨度预制梁连接固定,然后再在楼承板上浇筑混凝土。其中楼承板的运用能够减少混凝土的用量,节省大量临时性模板,能够省去大部分的模板支撑,也可作为受拉钢筋使用,减少钢筋的安装,从而减少施工环节,缩短施工工期,降低工程造价。
水电线管都可以从梁上部钢管和下部钢管中间的空隙中通过(如图8所示),从而达到梁、柱、板与管线分离的目的。如遇某些线路或管道出现问题时,方便及时检修、维修和更换。
由上述本发明提供的技术方案可以看出,本发明实施例提供的大跨度预制装配式结构,预制工作在厂内完成,拼接在现场施工,其中所涉及到的大跨度预制梁能够很好的解决现阶段房屋建筑中的管线分离和管线检修及更换的问题,其次本发明的另一个特点是大跨度框架结构,能很好的解决现阶段房屋建筑所遇到的使用功能灵活性的问题,可以根据业主的需求将所需空间的大小随意更换。本发明现场操作简便,施工进度快、施工效率高;节点构造设计大为简化,方便工厂预制,易于更换和拆卸。
综上所述,本发明提供了一种大跨度预制装配式结构,此结构为大跨度的框架结构,包括四角为构造筋中部为钢管的预制混凝土柱(柱子只分布在框架结构四角)和大跨度预制梁,预制混凝土柱在梁柱节点处预留出足够和梁进行 现场连接的部分不浇筑混凝土,待到现场与梁连接后对这一未浇筑混凝土的部分进行高压喷射混凝土,最后抹平。其中预制混凝土柱中钢管内的混凝土为了方便运输、减少运输成本,可在现场进行后浇,但其他部分需在工厂预制完成;大跨度预制梁由上部钢管、下部钢管和连接两钢管用的连接型钢组成,下部钢管内放一根预应力筋来承受拉力,上下两部分的钢管混凝土通过连接型钢将其焊接在一起,焊接的方式为两两连接的方式,连接型钢的连接形状为“N”字形。本发明装配结构主要用于解决现阶段房屋建筑中所遇到的管线分离的问题以及使用功能的灵活性问题。未来中国建筑的发展方向应该是朝着更加节能、绿色、更加耐久、更加灵活的方向发展。
本说明书中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (11)

  1. 一种大跨度预制装配式结构,其特征在于,包括大跨度预制梁和多个钢管混凝土柱(A);
    所述大跨度预制梁包括多个主梁(C)和多个次梁(D);多个所述主梁(C)能够围绕构成大跨度预制梁边框,多个所述次梁(D)交叉连接在所述大跨度预制梁边框内,多个所述钢管混凝土柱(A)用于同所述大跨度预制梁边框的多个边角一一对应装配连接,且所述主梁(C)和所述次梁(D)均为预应力钢架梁结构;
    所述主梁(C)包括:主梁下部钢管(6)、两个主梁上部钢管(5)、主梁连接型钢(13)、主梁预应力筋(9)和主梁混凝土(20);
    两个所述主梁上部钢管(5)平齐设置;所述主梁下部钢管(6)分别平行于两个所述主梁上部钢管(5),且位于两个所述主梁上部钢管(5)中间的下方;所述主梁下部钢管(6)与两个所述主梁上部钢管(5)这三者两两之间均通过所述主梁连接型钢(13)连接;所述主梁预应力筋(9)设置于所述主梁下部钢管(6)内;所述主梁混凝土(20)分别浇筑于所述主梁下部钢管(6)和两个所述主梁上部钢管(5)内。
  2. 根据权利要求1所述的大跨度预制装配式结构,其特征在于,所述次梁(D)包括:次梁下部钢管(17)、两个次梁上部钢管(18)、次梁连接型钢(19)、次梁预应力筋(21)和次梁混凝土(22);
    两个所述次梁上部钢管(18)平齐设置;所述次梁下部钢管(17)分别平行于两个所述次梁上部钢管(18),且位于两个所述次梁上部钢管(18)中间的下方;所述次梁下部钢管(17)与两个所述次梁上部钢管(18)这三者两两之间均通过所述次梁连接型钢(19)连接;所述次梁预应力筋(21)设置于所述次梁下部钢管(17)内;所述次梁混凝土(22)分别浇筑于所述次梁下部钢管(17)与两个所述次梁上部钢管(18)内。
  3. 根据权利要求2所述的大跨度预制装配式结构,其特征在于,两个所述次梁上部钢管(18)的端部与靠近所述次梁(D)的所述主梁上部钢管(5)的管壁连接;
    所述大跨度预制梁还包括角钢(10);
    所述次梁下部钢管(17)的长度大于所述次梁上部钢管(18)的长度,且其端部伸进至所述主梁下部钢管(6)的上方;所述次梁下部钢管(17)与所述主梁下部钢管(6)之间通过所述角钢(10)连接;
    两个所述次梁上部钢管(18)的端部与相邻的所述次梁上部钢管(5)的管壁连接;所述次梁下部钢管(17)的端部与相邻的所述次梁下部钢管(17)的管壁连接。
  4. 根据权利要求2所述的大跨度预制装配式结构,其特征在于,连接在两个所述主梁上部钢管(5)之间的所述主梁连接型钢(13),连接在一个所述主梁上部钢管(5)与所述主梁下部钢管(6)之间的所述主梁连接型钢(13),和连接在另一个所述主梁上部钢管(5)与所述主梁下部钢管(6)之间的所述主梁连接型钢(13)的数量均为多个,且均为呈现首尾相连的N字型排布;
    连接在两个所述次梁上部钢管(18)之间的所述次梁连接型钢(19),连接在一个所述次梁上部钢管(18)与所述次梁下部钢管(17)之间的所述次梁连接型钢(19),和连接在另一个所述次梁上部钢管(18)与所述次梁下部钢管(17)之间的所述次梁连接型钢(19)的数量均为多个,且均为呈现首尾相连的N字型排布。
  5. 根据权利要求2所述的大跨度预制装配式结构,其特征在于,所述主梁(C)还包括:两个主梁锚具(11);
    所述主梁预应力筋(9)的两端分别通过两个所述主梁锚具(11)一一固定于所述主梁下部钢管(6)的两端;
    所述次梁(D)还包括:两个次梁锚具;
    所述次梁预应力筋(21)的两端分别通过两个所述次梁锚具一一固定于所述次梁下部钢管(17)的两端。
  6. 根据权利要求1所述的大跨度预制装配式结构,其特征在于,所述钢管混凝土柱(A)内置有柱中钢管(3),且其梁柱节点处开设有用于同所述大跨度预制梁边框的相应边角对接配合的两个浇筑预留口,且每个所述浇筑预留口均连通于所述柱中钢管(3)的管壁。
  7. 根据权利要求6所述的大跨度预制装配式结构,其特征在于,当所述柱中钢管(3)的外径大于两个所述主梁上部钢管(5)的跨距时;两个所述主梁上部钢管(5)的端部分别位于所述浇筑预留口内,并与所述柱中钢管(3)的管壁装配连接;所述主梁下部钢管(6)的端部位于所述浇筑预留口内,并与所述柱中钢管(3)的管壁装配连接;
    或者,当所述柱中钢管(3)的外径小于两个所述主梁上部钢管(6)的跨距时;所述钢管混凝土柱(A)还包括两个钢板(7);两个所述钢板(7)分别设置于所述柱中钢管(3)对位于所述浇筑预留口的管壁的两侧,且所述浇筑预留口向内延伸至连通两个所述钢板(7);两个所述主梁上部钢管(5)的端部均位于所述浇筑预留口内,并分别与两个所述钢板(7)装配连接;所述主梁下部钢管(6)的端部位于所述浇筑预留口内,并与所述柱中钢管(3)的管壁装配连接。
  8. 根据权利要求7所述的大跨度预制装配式结构,其特征在于,当所述柱中钢管(3)的外径大于两个所述主梁上部钢管(5)的跨距时;所述钢管混凝土柱(A)还包括柱中钢管端板和悬挑梁;所述悬挑梁设置于所述柱中钢管(3)对位于所述浇筑预留口的管壁;所述柱中钢管端板与所述悬挑梁的端部垂直连接;所述主梁(C)还包括主梁端板:所述主梁端板分别与所述主梁下部钢管(6)和两个所述主梁上部钢管(5)的端部垂直连接;所述柱中钢管端板与所述主梁端板通过高强螺栓组件对位装配连接;
    或者,当所述柱中钢管(3)的外径小于两个所述主梁上部钢管(6)的跨距时;所述钢管混凝土柱(A)还包括柱中钢管端板和悬挑梁;所述悬挑梁分别垂直设置于两个所述钢板(7);所述柱中钢管端板与所述悬挑梁的端部垂直连接;所述主梁(C)还包括主梁端板:所述主梁端板分别与所述主梁下部钢管(6)和两个所述主梁上部钢管(5)的端部垂直连接;所述柱中钢管端板与所述主梁端板通过高强螺栓组件对位装配连接。
  9. 根据权利要求8所述的大跨度预制装配式结构,其特征在于,所述高强螺栓组件的高强螺栓的材质包括超弹性形状记忆合金。
  10. 根据权利要求8所述的大跨度预制装配式结构,其特征在于,所述钢 管混凝土柱(A)还包括柱中构造钢筋、滚焊螺旋箍筋(8)、混凝土(2)和所述柱中钢管(3);
    所述柱中钢管(3)设置于所述柱中构造钢筋内;所述滚焊螺旋箍筋(8)设置于所述柱中钢管(3)的外周壁;所述混凝土(2)分别浇筑于所述柱中钢管(3)内和所述柱中构造钢筋,且所述混凝土(2)开设有所述浇筑预留口。
  11. 根据权利要求1所述的大跨度预制装配式结构,其特征在于,还包括:设置于所述大跨度预制梁的顶部的楼承板(15)。
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