CN110468967B - Connecting node of oversized overweight prefabricated cladding plate and main body structure beam and construction method - Google Patents
Connecting node of oversized overweight prefabricated cladding plate and main body structure beam and construction method Download PDFInfo
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- CN110468967B CN110468967B CN201910748701.6A CN201910748701A CN110468967B CN 110468967 B CN110468967 B CN 110468967B CN 201910748701 A CN201910748701 A CN 201910748701A CN 110468967 B CN110468967 B CN 110468967B
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000005253 cladding Methods 0.000 title claims description 26
- 238000005553 drilling Methods 0.000 claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 238000009434 installation Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000004567 concrete Substances 0.000 claims description 20
- 238000004513 sizing Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000007718 adhesive strength test Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 9
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000005034 decoration Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
- E04B1/4142—Elements with sockets with transverse hook- or loop-receiving parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires
Abstract
The top and the bottom of the inner side surface of the prefabricated wallboard are respectively protruded outwards to form a connecting bracket; connecting the bracket and the prefabricated wallboard into a whole for casting and forming; the connecting bracket at the bottom of the lower prefabricated wallboard is arranged on the upper end face of the main body structural beam, vertical drilling holes are respectively arranged at the corresponding positions of the connecting bracket and the main body structural beam, the top of each vertical drilling hole penetrates through the connecting bracket, the bottom of each vertical drilling hole enters the main body structural beam, and after connecting plug-in components are arranged in the vertical drilling holes, the connecting bracket is filled and fixed by using non-telescopic grouting materials; the vertical outer side surface of the upper prefabricated wallboard connecting bracket and the bottom surface of the main body structure beam are fixed through connecting angle steel. The invention has simple structure and convenient construction, reduces the use of angle steel connecting pieces, saves steel, greatly improves the safety performance of the prefabricated wallboard, effectively reduces the construction difficulty and improves the installation efficiency of the prefabricated wallboard.
Description
Technical Field
The invention relates to the technical field of mounting of external wallboards, in particular to a connecting node of an oversized overweight prefabricated external cladding board and a main body structure beam and a construction method.
Background
The prefabricated concrete exterior wall cladding is a non-bearing prefabricated concrete exterior wall cladding which is arranged on the main body structure and plays roles of enclosure and decoration, and the exterior wall cladding can be divided into two forms of reinforced concrete exterior wall cladding and prestressed concrete exterior wall cladding according to component structures; the structure of the connection node with the main body structure can be divided into two forms of point support connection and line support connection; the heat preservation mode can be divided into three modes of no heat preservation, external heat preservation, sandwich heat preservation and the like; the positioning according to the function of the building outer wall can be divided into a wall panel and a decorative wall panel. Various exterior wall cladding boards can be combined with exterior decoration, heat preservation and doors and windows according to engineering requirements to form an integrated prefabricated wallboard system.
At present, the main installation method of the precast concrete hanging plate is to arrange two angle steels connected with the main body structure beam from top to bottom respectively, and the angle steels are connected with and supported by the main body through high-strength bolts, so that the mode has higher strength requirements on the supporting piece. In addition, because the outer wall body is formed by a plurality of multi-layer prefabricated wallboard units, in order to achieve the flatness and the perpendicularity of the design, the installation method has high requirements on the position accuracy of the connecting piece, so that the construction technical requirements are high, the operation is difficult, the corrosion prevention measures of the steel connecting piece and the like need to be strictly controlled, and otherwise, great potential safety hazards are easily generated.
Disclosure of Invention
The invention aims to provide a connecting node of an oversized overweight prefabricated cladding board and a main body structural beam and a construction method, and aims to find a new wallboard installation thought, reduce operation requirements, enable the prefabricated wallboard to better achieve flatness and perpendicularity required by design, reduce potential safety hazards and enable installation of the prefabricated wallboard to be safer and more convenient.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a super overweight prefabricated cladding and major structure roof beam's connected node, includes prefabricated wallboard and major structure roof beam, prefabricated wallboard includes prefabricated wallboard and lower prefabricated wallboard, its characterized in that:
the top of the inner side surface of the prefabricated wallboard is outwards protruded to form a first connecting end, and the bottom of the inner side surface is outwards protruded to form a second connecting end; the first connecting end and the second connecting end are integrally cast with the prefabricated wallboard;
the first connecting end at the bottom of the lower prefabricated wallboard is arranged on the upper end face of the main body structure beam, vertical drilling holes are respectively arranged at the corresponding positions of the first connecting end and the second connecting end, the top of each vertical drilling hole penetrates through the second mounting bracket, the bottom of each vertical drilling hole enters the main body structure beam, and the vertical drilling holes are filled and fixed by non-telescopic grouting materials after connecting plug-ins are arranged in the vertical drilling holes;
the first connecting end of the lower prefabricated wallboard is connected with the main body structure beam from the side face, connecting angle steel is arranged between the first connecting end and the main body structure beam, the vertical plate of the connecting angle steel is anchored with the vertical outer side face of the first connecting end, and the transverse plate is fixed with the bottom face of the main body structure beam.
As the preferable technical scheme of the invention, the first connecting end is provided with two first mounting brackets which are horizontally arranged and symmetrically arranged at the top of the inner side surface of the prefabricated wallboard; the second connecting end is two second installation brackets that the level set up, and the medial surface bottom of prefabricated wallboard is located to the symmetry, and the first installation bracket and the second installation bracket vertical corresponding setting of same one side.
Further preferably, the depth of the bottom of the vertical drilling hole into the main body structure beam is 1/3-2/3 of the total thickness of the main body structure beam.
Further preferably, the prefabricated wallboard is sequentially provided with a finish coat, a concrete layer and an insulation layer from outside to inside, wherein the concrete layer is outwards protruded at the corresponding position of the inner side of the prefabricated wallboard to form a first mounting bracket and a second mounting bracket; the outer side of the second mounting bracket is not coated with the heat insulation layer, and the outer side of the first mounting bracket is coated with the heat insulation layer.
Further preferably, the transverse span of the second mounting bracket in the direction perpendicular to the panel is 500-600 mm, and the thickness of the concrete layer in the vertical direction is 150-250 mm; the transverse span of the first mounting bracket in the direction perpendicular to the panel is 200-300 mm, and the thickness of the concrete layer in the vertical direction is 150-250 mm; the transverse span of the second mounting bracket is greater than the transverse span of the first mounting bracket.
Further preferably, the first mounting bracket and the second mounting bracket are respectively provided with a transverse rib and a longitudinal rib which are welded and connected, the longitudinal ribs are U-shaped ribs, the tail part of one side of each U-shaped rib, which is close to the prefabricated wallboard, extends into the wall body to form a vertical connecting part, and the connecting part is welded and fixed with the reinforcing bars in the prefabricated wallboard; the second installation bracket is still equipped with the arch strengthening rib in with prefabricated wallboard junction point, the arch strengthening rib simultaneously with U-shaped muscle and the arrangement of bars welded fastening in the prefabricated wallboard.
Still preferably, a sizing block is arranged in a connecting joint between the lower bottom surface of the second mounting bracket and the upper end surface of the main body structural beam, a reserved hole is formed in the middle of the sizing block at a corresponding position for the connecting plug-in to pass through, and the connecting joint is filled with dry-mixed mortar.
Further preferably, the connecting angle steel comprises a vertical plate, a transverse plate and lug plates at two sides, wherein the vertical plate is laid on the vertical outer side face of the first mounting bracket and is fixed through high-strength bolts, and the transverse plate of the connecting angle steel is fixed with the lower bottom face of the main body structural beam through expansion bolts.
Further preferably, the connecting plug-in is a stainless steel plug pin, the diameter range of the connecting plug-in is 15-25 mm, and the diameter range of the vertical drilling hole is 20-40 mm.
In addition, the invention also provides a construction method of the connecting node of the oversized overweight prefabricated cladding and the main body structural beam, which is characterized by comprising the following steps:
step one, preparing a prefabricated wallboard: manufacturing a prefabricated wallboard template according to the determined wallboard size and the positions of the first mounting bracket and the second mounting bracket, performing concrete pouring and curing, and finally respectively laying a facing layer and a heat preservation layer on two sides;
step two, setting vertical drilling and connecting angle steel: vertical drilling holes are respectively formed in the corresponding positions of the second mounting bracket and the main body structure beam, connecting angle steel is arranged at the corresponding position of the bottom of the main body structure beam, and the connecting angle steel is fixed on the main body structure beam by using expansion bolts, but is not required to be screwed;
step three, positioning a connecting plug-in: after the position of the connecting plug-in is adjusted, the connecting plug-in is inserted into a vertical drilling hole of the main body structural beam, and gaps in the hole are filled with non-telescopic grouting materials;
step four, bonding strength test of the connecting plug-in unit and the main structure beam: after the non-telescopic grouting material is solidified, sampling the connecting plug-in, carrying out a drawing test, and when the load reaches 117.68KN, and the connecting plug-in is not destroyed and is regarded as qualified, if the load is not qualified, carrying out construction again, so as to ensure that the bonding strength of the connecting plug-in and the main structure beam meets the requirement;
step five, hoisting the prefabricated wallboard: hoisting the prefabricated wallboard, enabling vertical drilling holes of a second mounting bracket at the bottom of the prefabricated wallboard to pass through the connecting plug-in unit, temporarily fixing the connecting angle steel and the main structural beam of the first mounting bracket by using the expansion bolts and the high-strength bolts respectively, initially screwing nuts without screwing, adjusting the position of the prefabricated wallboard, and screwing the expansion bolts and the high-strength bolts after confirming the position;
step six, filling slurry: filling the same kind of non-telescopic grouting material into the vertical drilling holes of the second mounting bracket, and plugging gaps between the second mounting bracket and the main body structural beam by using dry-mixed mortar;
and seventhly, standing and maintaining, so that the construction is completed.
Compared with the prior art, the invention has the technical advantages that:
when the prefabricated wallboard is in processing production, four brackets are outwards extended at the joint of the back surface of the concrete and the main body structure, the lower bracket is longer than the upper part in size, so that the lower bracket is placed on the structural beam, a vertical drilling hole is reserved at the position of the main body structural beam corresponding to the corresponding connection point of the lower extended bracket according to practical requirements in practical construction, and when the prefabricated wallboard is hoisted, the two brackets which are downwards extended are placed on the upper side of the main body structural beam and are respectively connected up and down through a bolt to serve as main supports of the prefabricated wallboard, and the upper part is still connected with the prefabricated hanging plate and the main body structure by adopting angle steel, so that the prefabricated wallboard is safer and more convenient to install.
The invention has simple structure and convenient construction, reduces the use of angle steel connecting pieces, saves steel, greatly improves the safety performance of the prefabricated wallboard, effectively reduces the construction difficulty and improves the installation efficiency of the prefabricated wallboard.
Drawings
The foregoing and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the invention, wherein:
FIG. 1 is a schematic view of the connection node of an oversized overweight prefabricated cladding panel and a main body structural beam according to the present invention;
FIG. 2 is a schematic view of the construction of a prefabricated wall panel according to the present invention;
FIG. 3 is a schematic view of the internal reinforcement of a prefabricated wall panel according to the present invention;
fig. 4 is a schematic structural view of the connecting angle iron according to the present invention.
Reference numerals: 1-prefabricated wallboard, 1.1-first installation bracket, 1.2-second installation bracket, 1.3-finish coat, 1.4-concrete slab, 1.5-heat preservation, 1.6-U-shaped rib, 1.7-arch reinforcing rib, 2-main body structural beam, 3-vertical drilling, 4-connection plug-in, 5-non-telescopic grouting material, 6-connection angle steel, 6.1-vertical plate, 6.2-transverse plate, 6.3-lug plate, 7-sizing block, 8-dry mixed mortar, 9-expansion bolt and 10-high-strength bolt.
Detailed Description
Hereinafter, embodiments of the connection node of an oversized overweight prefabricated cladding panel and a main body structural beam and a construction method thereof of the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present invention, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the invention to the embodiments and scope of the invention. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification of the present application, including those adopting any obvious substitutions and modifications to the embodiments described herein.
The drawings in the present specification are schematic views, which assist in explaining the concept of the present invention, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structures of the components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention. Fig. 1 is a schematic structural diagram of a connection node between an oversized overweight prefabricated cladding panel and a main body structural beam, wherein the connection node comprises a prefabricated wallboard 1 and a main body structural beam 2, the prefabricated wallboard 1 comprises an upper prefabricated wallboard and a lower prefabricated wallboard, as shown in fig. 2, the top of the inner side surface of the prefabricated wallboard 1 respectively protrudes outwards to form a first connection end, and the bottom of the inner side surface protrudes outwards to form a second connection end; the first connecting end and the second connecting end can be continuous protruding beams or other forms, and in the embodiment, the first connecting end is preferably two independent first mounting brackets 1.1 which are horizontally arranged and symmetrically arranged at the top of the inner side surface of the prefabricated wallboard 1; the second connecting end is two second installation brackets 1.2 that the level set up, and the medial surface bottom of prefabricated wallboard 1 is located to the symmetry, and the first installation bracket 1.1 and the vertical corresponding setting of second installation bracket 1.2 of same one side. The first mounting bracket 1.1 and the second mounting bracket 1.2 are integrally cast with the prefabricated wallboard 1; the prefabricated wallboard 1 sequentially comprises a finish coat 1.3, a concrete layer 1.4 and an insulation layer 1.5 from outside to inside, wherein the concrete layer 1.4 bulges outwards at the corresponding position of the inner side surface of the prefabricated wallboard 1 to form a first mounting bracket 1.1 and a second mounting bracket 1.2; wherein, the outside of the second installation bracket 1.2 is not coated with the heat preservation layer 1.5, and the outside of the first installation bracket 1.1 is coated with the heat preservation layer 1.5.
Wherein, the transverse span of the second mounting bracket 1.2 vertical to the panel direction is 550mm, and the thickness of the concrete layer in the vertical direction is 200mm; the transverse span of the first mounting bracket 1.1 in the direction perpendicular to the panel is 250mm, and the thickness of the concrete layer in the vertical direction is 200mm; the transverse span of the second mounting bracket 1.2 is larger than that of the first mounting bracket 1.1, so that the first mounting bracket 1.1 is fixedly connected with the main body structural beam 2 from the side surface, and the second mounting bracket 1.2 is erected on the upper end surface of the main body structural beam 2.
As shown in fig. 3, in the reinforcement arrangement, the reinforcement of the prefabricated wallboard 1 is normally arranged, transverse ribs and longitudinal ribs which are in welded connection are respectively arranged in the first installation bracket 1.1 and the second installation bracket 1.2, the length of the transverse ribs is adapted to the length of the corresponding direction of the brackets, the longitudinal ribs are U-shaped ribs 1.6, the U-shaped ribs 1.6 are transversely arranged in the longitudinal section, the head part of one side of the U-shaped ribs, which is far away from the prefabricated wallboard 1, is a closed end, and two support legs, which are close to the tail part of one side of the prefabricated wallboard 1, extend to the upper part or the lower part in the wall body to form vertical connecting parts, and the connecting parts are welded and fixed with the reinforcement in the prefabricated wallboard 1; the second installation bracket 1.2 still is equipped with arch strengthening rib 1.7 in the position of being connected with prefabricated wallboard 1, arch strengthening rib 1.7 simultaneously with U-shaped muscle 1.6 and the arrangement of bars welded fastening in the prefabricated wallboard 1. All the steel bars are three-level steel, so that the strength is ensured.
The second mounting bracket 1.2 at the bottom of the upper prefabricated wallboard is arranged on the upper end face of the main body structural beam 2, vertical drilling holes 3 are respectively arranged at the corresponding positions of the second mounting bracket and the upper prefabricated wallboard and serve as supporting connection points with the structure, the top of each vertical drilling hole 3 penetrates through the second mounting bracket 1.2, the bottom of each vertical drilling hole enters the main body structural beam 2, and the drilling depth is 1/3-2/3 of the total thickness of the main body structural beam 2. The vertical drilling holes 3 are filled and fixed by non-telescopic grouting material 5 after the connecting plug-in pieces 4 are arranged in the vertical drilling holes 3; the connecting insert 4 is a stainless steel plug pin with a diameter in the range of 20mm and the vertical bore 3 with a diameter in the range of 30mm. A sizing block 7 is arranged in a connecting joint between the lower bottom surface of the second mounting bracket 1.2 and the upper end surface of the main body structural beam 2, a reserved hole is formed in the middle of the sizing block 7 and corresponds to the middle position of the sizing block for the connecting plug-in 4 to pass through, and the connecting joint is filled with dry-mixed mortar 8.
The first installation bracket 1.1 of prefabricated wallboard down is connected with main structure roof beam 2 from the side, sets up angle steel 6 between the two, and the riser of angle steel 6 is fixed with the vertical lateral surface anchor of first link, and the diaphragm is fixed with the bottom surface of main structure roof beam 2. As shown in fig. 4, the connecting angle steel 6 comprises a vertical plate 6.1, a transverse plate 6.2 and ear plates 6.3 at two sides, wherein the vertical plate is laid on the vertical outer side surface of the first mounting bracket 1.1 and is fixed by a high-strength bolt 10, and the transverse plate of the connecting angle steel 6 is fixed with the lower bottom surface of the main structural beam 2 by an expansion bolt 9
The construction method of the connecting node of the oversized overweight prefabricated cladding and the main body structure beam comprises the following steps:
step one, preparing a prefabricated wallboard 1: manufacturing a prefabricated wallboard template according to the determined wallboard size and the positions of the first mounting bracket 1.1 and the second mounting bracket 1.2, performing concrete pouring and curing, and finally respectively laying a facing layer 1.3 and an insulating layer 1.5 on two sides;
step two, setting a vertical drilling hole 3 and a connecting angle steel 6: vertical drilling holes 3 are respectively formed in the corresponding positions of the second mounting bracket 1.2 and the main body structure beam 2, connecting angle steels 6 are arranged in the corresponding positions of the bottom of the main body structure beam 2, and the connecting angle steels 6 are fixed on the main body structure beam 2 by expansion bolts 9 but are not required to be screwed;
step three, the connection plug-in 4 is in place: after the position of the connecting plug-in 4 is adjusted, the connecting plug-in is inserted into the vertical drilling hole 3 of the main body structural beam 2, and the gap in the hole is filled with non-telescopic grouting material 5;
step four, adhesive strength test of the connecting plug-in 4 and the main structural beam 2: after the non-telescopic grouting material 5 is solidified, sampling the connecting plug-in 4 for a drawing test, and when the load reaches 117.68KN, and the connecting plug-in is not destroyed and is regarded as qualified, if the load is not qualified, the construction is required to be performed again, so that the bonding strength of the connecting plug-in 4 and the main structural beam 2 is ensured to meet the requirement;
step five, hoisting the prefabricated wallboard 1: hoisting the prefabricated wallboard 1, enabling a vertical drilling hole 3 of a second mounting bracket 1.2 at the bottom of the prefabricated wallboard 1 to pass through a connecting plug-in unit 4, temporarily fixing a connecting angle steel 6 with the first mounting bracket 1.1 and a main structure beam 2 by using an expansion bolt 9 and a high-strength bolt 10 respectively, initially screwing nuts without screwing, adjusting the position of the prefabricated wallboard 1, and screwing the expansion bolt 9 and the high-strength bolt 10 after confirming the position;
step six, filling slurry: filling the same kind of non-telescopic grouting material 5 into the vertical drilling holes 3 of the second mounting bracket 1.2, and sealing the gap between the second mounting bracket 1.2 and the main body structural beam 2 by using dry-mixed mortar 8;
and seventhly, standing and maintaining, so that the construction is completed.
When the prefabricated wallboard is processed and produced, the four brackets are outwards extended at the joint of the back surface of the concrete and the main body structure, the lower bracket is longer than the upper part in size, so that the lower bracket is placed on the structural beam, the actual construction is based on the actual requirement, vertical drilling holes are reserved at the corresponding joint of the lower extended bracket corresponding to the main body structural beam, and when the prefabricated wallboard is hoisted, the two brackets which are downwards extended are placed on the upper side of the main body structural beam and are respectively connected up and down through a bolt to serve as main supports of the prefabricated wallboard, and the upper part is still connected with the prefabricated hanging plate and the main body structure by adopting angle steel, so that the prefabricated wallboard is safer and more convenient to install.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The utility model provides a construction method of super overweight prefabricated cladding and major structure roof beam's connected node, super overweight prefabricated cladding and major structure roof beam's connected node includes prefabricated wallboard (1) and major structure roof beam (2), prefabricated wallboard (1) include prefabricated wallboard and lower prefabricated wallboard, its characterized in that:
the top of the inner side surface of the prefabricated wallboard (1) protrudes outwards to form a first connecting end, and the bottom of the inner side surface protrudes outwards to form a second connecting end; the first connecting end and the second connecting end are integrally cast with the prefabricated wallboard (1);
the second connecting end at the bottom of the upper prefabricated wallboard is arranged on the upper end face of the main body structural beam (2), vertical drilling holes (3) are respectively arranged at corresponding positions of the second connecting end and the upper end, the top of each vertical drilling hole (3) penetrates through the second mounting bracket (1.2), the bottom of each vertical drilling hole enters the main body structural beam (2), and connecting plug-in components (4) are arranged in the vertical drilling holes (3) and then are filled and fixed by non-telescopic grouting materials (5);
the first connecting end of the lower prefabricated wallboard is connected with the main body structural beam (2) from the side surface, a connecting angle steel (6) is arranged between the first connecting end and the main body structural beam, a vertical plate of the connecting angle steel (6) is anchored with the vertical outer side surface of the first connecting end, and a transverse plate is fixed with the bottom surface of the main body structural beam (2);
the method comprises the following steps:
step one, preparing a prefabricated wallboard (1): manufacturing a prefabricated wallboard template according to the determined wallboard size and the positions of the first mounting bracket (1.1) and the second mounting bracket (1.2), performing concrete pouring and curing, and finally respectively laying a facing layer (1.3) and an insulating layer (1.5) on two sides;
step two, setting a vertical drilling hole (3) and a connecting angle steel (6): vertical drilling holes (3) are respectively formed in corresponding positions of the second mounting bracket (1.2) and the main body structure beam (2), connecting angle steel (6) is arranged at corresponding positions of the bottom of the main body structure beam (2), and the connecting angle steel (6) is fixed on the main body structure beam (2) by using expansion bolts (9) but is not required to be screwed;
step three, positioning a connecting plug-in (4): after the connecting plug-in (4) is adjusted to be in position, the connecting plug-in is inserted into a vertical drilling hole (3) of the main body structural beam (2), and gaps in the hole are filled with non-telescopic grouting material (5);
step four, adhesive strength test of connecting the plug-in (4) and the main structure beam (2): sampling the connecting plug-in (4) for a nondestructive drawing test after the non-telescopic grouting material (5) is solidified, so as to ensure that the bonding strength of the connecting plug-in (4) and the main structure beam (2) meets the requirement;
step five, hoisting the prefabricated wallboard (1): hoisting the prefabricated wallboard (1), enabling a vertical drilling hole (3) of a second mounting bracket (1.2) at the bottom of the prefabricated wallboard (1) to penetrate through a connecting plug-in unit (4), temporarily fixing a connecting angle steel (6) with the first mounting bracket (1.1) and a main structure beam (2) by using an expansion bolt (9) and a high-strength bolt (10), primarily screwing nuts without screwing, adjusting the position of the prefabricated wallboard (1), and screwing the expansion bolt (9) and the high-strength bolt (10) after confirming the position;
step six, filling slurry: filling the same kind of non-telescopic grouting material (5) into the vertical drilling holes (3) of the second mounting bracket (1.2), and plugging the gap between the second mounting bracket (1.2) and the main body structural beam (2) by using dry-mixed mortar (8);
and seventhly, standing and maintaining, so that the construction is completed.
2. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 1, is characterized in that: the first connecting ends are two first mounting brackets (1.1) which are horizontally arranged and symmetrically arranged at the top of the inner side surface of the prefabricated wallboard (1); the second connecting ends are two second installation brackets (1.2) which are horizontally arranged, the second installation brackets are symmetrically arranged at the bottom of the inner side surface of the prefabricated wallboard (1), and the first installation brackets (1.1) and the second installation brackets (1.2) on the same side are vertically and correspondingly arranged.
3. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 2, characterized in that: the depth of the bottom of the vertical drilling hole (3) entering the main body structure beam (2) is 1/3-2/3 of the total thickness of the main body structure beam (2).
4. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 2, characterized in that: the prefabricated wallboard (1) is sequentially provided with a finish coat (1.3), a concrete layer (1.4) and a heat insulation layer (1.5) from outside to inside, wherein the concrete layer (1.4) is outwards protruded at the corresponding position of the inner side of the prefabricated wallboard (1) to form a first mounting bracket (1.1) and a second mounting bracket (1.2); the outer side of the second mounting bracket (1.2) is not coated with the heat insulation layer (1.5), and the outer side of the first mounting bracket (1.1) is coated with the heat insulation layer (1.5).
5. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 2, characterized in that: the transverse span of the second mounting bracket (1.2) perpendicular to the panel direction is 500-600 mm, and the thickness of the concrete layer in the vertical direction is 150-250 mm; the transverse span of the first mounting bracket (1.1) in the direction perpendicular to the panel is 200-300 mm, and the thickness of the concrete layer in the vertical direction is 150-250 mm; the transverse span of the second mounting bracket (1.2) is greater than the transverse span of the first mounting bracket (1.1).
6. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 2, characterized in that: the U-shaped rib (1.6) is close to the tail of one side of the prefabricated wallboard (1) and extends into the wall body to form a vertical connecting part, and the connecting part is welded and fixed with reinforcing bars in the prefabricated wallboard (1); the second installation bracket (1.2) is also provided with an arch reinforcing rib (1.7) in the connection part of the second installation bracket and the prefabricated wallboard (1), and the arch reinforcing rib (1.7) is welded and fixed with the U-shaped rib (1.6) and the reinforcing rib in the prefabricated wallboard (1) at the same time.
7. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 2, characterized in that: the connecting joint between the lower bottom surface of the second mounting bracket (1.2) and the upper end surface of the main body structure beam (2) is internally provided with a sizing block (7), a reserved hole is formed in the middle of the sizing block (7) at a corresponding position for the connecting plug-in unit (4) to pass through, and the connecting joint is filled with dry-mixed mortar (8).
8. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 2, characterized in that: the connecting angle steel (6) comprises a vertical plate (6.1), a transverse plate (6.2) and ear plates (6.3) on two sides, wherein the vertical plate is laid on the vertical outer side face of a first mounting bracket (1.1) and is fixed through a high-strength bolt (10), and the transverse plate of the connecting angle steel (6) is fixed with the lower bottom face of a main body structure beam (2) through an expansion bolt (9).
9. The construction method of the connection node of the oversized overweight prefabricated cladding and the main body structural beam, according to claim 2, characterized in that: the connecting plug-in (4) is a stainless steel plug pin, the diameter range of the connecting plug-in is 15-25 mm, and the diameter range of the vertical drilling hole (3) is 20-40 mm.
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| CN112900736B (en) * | 2021-01-20 | 2022-10-18 | 中国建筑第八工程局有限公司 | Prefabricated external wall panel and mounting method thereof |
| CN116950289B (en) * | 2023-07-25 | 2024-01-16 | 秦皇岛市政建材集团有限公司 | Passive PC external wall panel connecting structure with building modeling and mounting method |
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