CN115288347B - Steel pipe truss prestressed concrete superimposed sheet - Google Patents
Steel pipe truss prestressed concrete superimposed sheet Download PDFInfo
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- CN115288347B CN115288347B CN202211019271.2A CN202211019271A CN115288347B CN 115288347 B CN115288347 B CN 115288347B CN 202211019271 A CN202211019271 A CN 202211019271A CN 115288347 B CN115288347 B CN 115288347B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 250
- 239000010959 steel Substances 0.000 title claims abstract description 250
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 36
- 230000002787 reinforcement Effects 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 239000004567 concrete Substances 0.000 claims description 21
- 238000005452 bending Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0627—Three-dimensional reinforcements composed of a prefabricated reinforcing mat combined with reinforcing elements protruding out of the plane of the mat
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
Abstract
The invention discloses a steel pipe truss prestressed concrete superimposed sheet, which relates to the technical field of prefabricated superimposed sheets and comprises a bottom plate and a steel reinforcement framework arranged on the bottom plate, wherein the steel reinforcement framework comprises two fixed side frames, a plurality of longitudinal steel bars arranged along the width direction of the bottom plate and a plurality of transverse steel bars arranged along the length direction of the bottom plate, the two fixed side frames are respectively arranged on two opposite sides of the bottom plate, each longitudinal steel bar and each transverse steel bar are staggered to form a steel reinforcement framework, two ends of the steel reinforcement framework are movably connected to the two fixed side frames, the steel reinforcement framework can move and is provided with a hoisting station on a movable stroke, one end of each longitudinal steel bar is respectively hooked with the two fixed side frames when the hoisting station is used for hooking each transverse steel bar of a set, and each transverse steel bar of the set is of a hoisting bearing structure. The stress between the connection points of the bottom plate and the two fixed side frames is balanced, the pipe truss prestressed concrete composite slab is not easy to damage and deform and break, and the pipe truss prestressed concrete composite slab is stable in hoisting.
Description
Technical Field
The invention relates to the technical field of prefabricated superimposed sheets, in particular to a steel pipe truss prestressed concrete superimposed sheet.
Background
The main stream construction mode of the building cover and the roof of the multi-story high-rise building mainly comprises the steps of cast-in-situ concrete integral pouring, setting up a specified temporary scaffold on a construction site, setting up a template on the scaffold, configuring steel bars according to requirements, then carrying out concrete pouring on site, and dismantling the template and the scaffold after the building cover and the roof are solidified. In recent years, the application of the concrete truss composite slab in the building industry is more and more extensive, the concrete truss composite slab mainly comprises a bottom plate and a truss, the concrete truss composite slab integrally formed by pouring the bottom plate and the truss can reduce the number of construction templates and scaffolds in the construction process, improve the construction efficiency and further reduce the construction cost.
The steel pipe truss comprises a steel pipe and a plurality of longitudinal prestressed steel bars arranged in the steel pipe, wherein the steel pipe truss comprises a steel pipe and wavy steel bars welded on two sides of the steel pipe, the wavy steel bars comprise wave crest sections, wave trough sections and web members between the wave crest sections and the wave trough sections, the wave trough sections or/and the lower sections of the web members of the wavy steel bars are/is transversely bent to form bent V-shaped supporting force transmission components, the wave trough sections or/and the transverse lower sections of the transverse bent web members are/is transversely embedded in the steel pipe, the vertical lower sections of the web members are/is embedded in the concrete bottom, the longitudinal prestressed steel bars are arranged on the bent V-shaped supporting force transmission components, and the longitudinal prestressed steel bars and the bent V-shaped supporting force transmission components are integrally glued by concrete.
And the patent application with the name of CN105756252B is entitled prestressed concrete truss superimposed sheet and manufacturing method thereof, which comprises a concrete bottom plate, wherein trusses are arranged on the concrete bottom plate, each truss comprises an upper chord member, the two sides of the upper chord member are respectively provided with a first web member and a second web member, the first web member and the second web member are continuously bent reinforcing steel bars, the bent parts at the tops of the first web member and the second web member are connected with the outer wall of the upper chord member, the bent parts at the bottoms of the first web member and the second web member are embedded into the concrete bottom plate, a plurality of prestressed longitudinal bars are arranged in the concrete bottom plate, the length direction of each prestressed longitudinal bar is parallel to the length direction of the upper chord member, 1-5 transverse reinforcing steel bars are respectively arranged in the two ends of the concrete bottom plate, the length direction of each transverse reinforcing steel bar is perpendicular to the length direction of the prestressed longitudinal bar, the length direction of each transverse auxiliary reinforcing steel bar is perpendicular to the length direction of the equal prestressed longitudinal bar, each transverse auxiliary reinforcing steel bar is arranged in the concrete bottom plate at the 1-3 bent parts at the two ends of the first web member and the second web member, each transverse auxiliary reinforcing steel bar is located at one side far away from the transverse auxiliary web member from the longitudinal bar from the bottom of the first web member.
The main body structure of the steel pipe truss prestressed concrete superimposed sheet in the prior art including the patent is composed of a bottom plate and two trusses arranged on the bottom plate, and the main body structure is characterized in that: 1. in the process of hoisting the superimposed sheet, such as loading and unloading and hoisting the top of a building for construction, the lifting rope is obliquely hooked on the truss, the truss at the hooking position of the lifting rope can slightly bend and deform, the gravity of the bottom plate acts on a local structure at the connecting position of the truss and the lifting rope, namely, local stress points are formed between the truss and the bottom plate, the connecting points of the truss and the bottom plate cannot be uniformly stressed, and the mass of the bottom plate is far greater than that of the truss, so that the connecting structure between the truss and the bottom plate at the local stress points is excessively loaded to cause damage deformation or even fracture; 2. in the storage and transportation, a plurality of this superimposed sheet all are the pile and stack together, easily cause the truss deformation of superimposed sheet of bottom, especially in the transportation, when the trailer of delivery superimposed sheet gets into the relatively poor building site of road conditions, jolt comparatively serious, very easily cause the truss deformation of superimposed sheet of bottom, this just makes the workman need correct the superimposed sheet truss of deformation when being under construction, has pulled down the efficiency of construction.
Disclosure of Invention
The invention aims to provide a steel pipe truss prestressed concrete composite slab, which aims to solve the defects in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions: the steel pipe truss prestressed concrete superimposed sheet comprises a bottom plate and a steel reinforcement framework arranged on the bottom plate, wherein the steel reinforcement framework comprises two fixed side frames, a plurality of longitudinal steel bars arranged along the width direction of the bottom plate and a plurality of transverse steel bars arranged along the length direction of the bottom plate; the two fixed side frames are respectively arranged on two opposite sides of the bottom plate; the two ends of the steel bar net frame are movably connected to the two fixed side frames, a hoisting station is arranged on the movable stroke of the steel bar net frame, one end of each longitudinal steel bar is respectively hooked with the two fixed side frames when the hoisting station is operated, the other end of each longitudinal steel bar is hooked with each transverse steel bar of the set, and each transverse steel bar of the set is a hoisting bearing structure.
Further, each longitudinal steel bar is provided with a hinging end and a hooked end, each longitudinal steel bar is hinged with the two fixed side frames alternately along the transverse direction through the hinging end, and the two longitudinal steel bars positioned at the two sides are hinged on the same fixed side frame; each transverse steel bar is arranged on two longitudinal steel bars positioned on two sides in a sliding manner, and the sliding direction is the length direction of the longitudinal steel bars positioned on two sides; when each longitudinal steel bar rotates to a horizontal state, the hook end of each longitudinal steel bar is hooked on the fixed side frame far away from the hinged end of each longitudinal steel bar; and when each longitudinal steel bar rotates to the hoisting station, the projections of the hooked ends of each longitudinal steel bar in the transverse direction are overlapped, and each transverse steel bar slides to the hooked ends to be assembled to form the hoisting bearing structure.
Further, the fixed side frame comprises a steel pipe and at least one wavy steel bar which are transversely arranged, the top of the wavy steel bar is fixedly connected to the steel pipe, and the bottom of the wavy steel bar is fixedly arranged on the bottom plate.
Further, the number of the wavy steel bars is two, the tops of the two wavy steel bars are distributed on two opposite sides of the steel pipe, and the bottom spacing of the two wavy steel bars is larger than the top spacing.
Further, the wavy steel bar is provided with a plurality of horizontal sections extending along the transverse direction, and each horizontal section is embedded into the bottom plate.
Further, the bottom plate comprises a prestressed reinforcement structure and a concrete layer coating the prestressed reinforcement structure.
Further, the prestressed reinforcement structure comprises a plurality of transverse ribs and a plurality of longitudinal ribs, wherein each transverse rib and each longitudinal rib are arranged in a crisscross mode, the two transverse ribs on two sides are respectively connected with the bottom of one wavy reinforcement, and the end parts of the longitudinal ribs are connected at the connection parts of the transverse ribs and the wavy reinforcement.
Further, the hinged end is an annular structure formed by bending the end parts of the longitudinal steel bars, and the annular structure is movably sleeved at the top of the fixed side frame; the hook end is a right-angle structure formed by bending the end part of the longitudinal steel bar by 90 degrees.
Further, the two ends of the transverse steel bars are respectively bent 180 degrees to form bending structures, and the bending structures are movably sleeved on the corresponding longitudinal steel bars.
Further, the bending structure is provided with a limit bent part.
According to the steel pipe truss prestressed concrete composite slab, when in storage and transportation, the longitudinal steel bars and the steel bar net frames formed by staggering the transverse steel bars are horizontally hooked on the two fixed side frames, and the two fixed side frames are connected and limited in the width direction of the bottom plate, so that after a plurality of steel pipe truss prestressed concrete composite slabs are stacked together, the two fixed side frames and the steel bar net frames support the steel pipe truss prestressed concrete composite slab above, and the fixed side frames are stable and not easy to deform. When the steel bar net rack moves to the hoisting station, one end of each longitudinal steel bar is uniformly hooked on the fixed side frames on two sides, the other end of each longitudinal steel bar is intersected to the right upper part of the central line of the bottom plate and is hooked with each transverse steel bar of the set, each transverse steel bar of the set forms a strong and difficult-to-deform hoisting bearing structure, the hoisting ropes are directly hooked to the two ends of the hoisting bearing structure to hoist, the hoisting bearing structure and each longitudinal steel bar are uniformly stressed, the two fixed side frames and each longitudinal steel bar on the two fixed side frames are uniformly stressed, and the connecting points of the bottom plate and the two fixed side frames are uniformly stressed, so that the steel tube truss prestressed concrete composite slab is difficult to break and stable in hoisting. After the steel bar is hoisted to a roof, the hoisting ropes are loosened, the longitudinal steel bars are alternately rotated and flattened to the two fixed side frames, concrete pouring can be directly carried out only by sliding and adjusting the spacing between the transverse steel bars, and the steel bar net frame becomes a concrete skeleton.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram I of a fixed side frame according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram II of a fixed side frame according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram III of a fixed side frame according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a connection structure between a fixed side frame and a prestressed reinforcement structure according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a longitudinal steel bar according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a transverse reinforcement provided in an embodiment of the present invention;
FIGS. 7-8 are schematic illustrations of a structure during production assembly according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a lifting station according to an embodiment of the present invention;
FIG. 10 is a front view of a lifting station according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of the construction according to the embodiment of the present invention;
FIG. 12 is a schematic structural view IV of a fixed side frame according to an embodiment of the present invention;
FIG. 13 is a schematic view of a connection structure between a fixed side frame and a bottom plate according to an embodiment of the present invention;
FIG. 14 is a schematic view of a structure of a production assembly according to another embodiment of the present invention;
FIG. 15 is a schematic view of a connection structure at a lifting station according to another embodiment of the present invention;
FIG. 16 is a schematic view of a construction operation according to another embodiment of the present invention;
FIG. 17 is a top plan view of another embodiment of the present invention in use for construction;
FIG. 18 is a schematic view of a construction operation according to still another embodiment of the present invention;
fig. 19 is a schematic view of a hoisting station according to still another embodiment of the present invention.
Reference numerals illustrate:
1. a bottom plate; 1.1, a prestressed reinforcement structure; 2. a reinforcement cage; 2.1, fixing a side frame; 2.11, steel pipes; 2.12, wavy steel bars; 2.121, horizontal segment; 2.2, longitudinal steel bars; 2.21, hinged end; 2.22, a hook end; 2.23, a longitudinal connecting section; 2.3, transverse reinforcing steel bars; 2.31, limit curves; 2.32, a transverse connecting section; 3. hoisting the bearing structure; 4. a movable reinforcing bar; 5. a connecting rod; 6. triggering the block.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1-19, in order to achieve the above objective, the present invention provides the following technical solutions: the steel pipe truss prestressed concrete superimposed sheet comprises a bottom plate 1 and a steel reinforcement framework 2 arranged on the bottom plate 1, wherein the steel reinforcement framework 2 comprises two fixed side frames 2.1, a plurality of longitudinal steel bars 2.2 arranged along the width direction of the bottom plate 1 and a plurality of transverse steel bars 2.3 arranged along the length direction of the bottom plate 1; the two fixed side frames 2.1 are respectively arranged on two opposite sides of the bottom plate 1; each longitudinal steel bar 2.2 and each transverse steel bar 2.3 are staggered to form a steel bar net rack, two ends of the steel bar net rack are movably connected to the two fixed side frames 2.1, the steel bar net rack can move and is provided with a hoisting station on the moving stroke, one end of each longitudinal steel bar 2.2 is respectively hooked with the two fixed side frames 2.1 during the hoisting station, the other end of each longitudinal steel bar 2.2 is hooked with each transverse steel bar 2.3 of the set, and each transverse steel bar 2.3 of the set is a hoisting bearing structure 3.
Specifically, each longitudinal steel bar 2.2 has a hinged end 2.21 and a hooked end 2.22, each longitudinal steel bar 2.2 is alternately hinged with two fixed side frames 2.1 along the transverse direction (the length direction of the bottom plate 1 and the fixed side frames 2.1) through the hinged end 2.21, namely, the hinged end 2.21 of one of any adjacent two longitudinal steel bars 2.2 is hinged with one fixed side frame 2.1, and the hinged end 2.21 of the other is hinged with the other fixed side frame 2.1; two longitudinal steel bars 2.2 positioned at two sides are hinged on the same fixed side frame 2.1; each transverse steel bar 2.3 is arranged on the two longitudinal steel bars 2.2 on two sides in a sliding manner, and the sliding direction is the length direction of the longitudinal steel bars 2.2 on two sides; when each longitudinal steel bar 2.2 rotates to a horizontal state, the hooked end 2.22 of each longitudinal steel bar 2.2 is hooked on the fixed side frame 2.1 (namely the fixed side frame 2.1 which is not hinged with the fixed side frame) far away from the hinged end 2.21, in the state, a plurality of steel pipe truss prestressed concrete superimposed sheets can be stacked for storage and transportation, and two ends of each longitudinal steel bar 2.2 are hooked on the two fixed side frames 2.1 respectively, so that the two fixed side frames 2.1 are not easy to deform; when each longitudinal steel bar 2.2 rotates to the hoisting station, the projections of the hook ends 2.22 of each longitudinal steel bar 2.2 on the transverse direction (the length direction of the bottom plate 1, the fixed side frames 2.1 and the transverse steel bars 2.3) are overlapped, namely, each longitudinal steel bar 2.2 is positioned on a straight line parallel to the width direction of the bottom plate 1, the straight line is positioned right above the middle part of the bottom plate 1, the distances from the straight line to the two fixed side frames 2.1 are equal, and each transverse steel bar 2.3 slides to the hook ends 2.22 along the two longitudinal steel bars 2.2 on two sides to form the hoisting bearing structure 3.
In the technical scheme, the steel pipe truss prestressed concrete composite slab is characterized in that during storage and transportation, the steel bar net frames formed by staggering the longitudinal steel bars 2.2 and the transverse steel bars 2.3 are horizontally hooked on the two fixed side frames 2.1, and the two fixed side frames 2.1 are connected and limited in the width direction of the bottom plate 1, so that after a plurality of the steel pipe truss prestressed concrete composite slabs are stacked together, the two fixed side frames 2.1 and the steel bar net frames support the pipe truss prestressed concrete composite slab above, and the fixed side frames 2.1 are stable and are not easy to deform. When the steel bar net frame moves to the hoisting station, one end of each longitudinal steel bar 2.2 is uniformly hooked on the fixed side frames 2.1 on two sides, the other end is intersected to the right upper part of the central line of the bottom plate 1 and hooked with each collected transverse steel bar 2.3, each collected transverse steel bar 2.3 forms a thick and difficult-to-deform hoisting bearing structure 3, the hoisting ropes are directly hooked to two ends of the hoisting bearing structure 3 to hoist, the hoisting bearing structure 3 and each longitudinal steel bar 2.2 are uniformly stressed, the two fixed side frames 2.1 and each longitudinal steel bar 2.2 on the two fixed side frames are uniformly stressed, and the connection points of the bottom plate 1 and the two fixed side frames 2.1 are uniformly stressed, so that the steel bar net frame is difficult to be damaged and deformed, difficult to break, and the pipe truss prestressed concrete laminated slab is stable in hoisting. After the steel bar is hoisted to a roof, the hoisting ropes are loosened, the longitudinal steel bars 2.2 are alternately rotated and flattened on the two fixed side frames 2.1, and concrete pouring can be directly carried out by only sliding and adjusting the spacing between the transverse steel bars 2.3, so that the steel bar net frame becomes a concrete skeleton.
As a preferred technical scheme of the embodiment, the fixed side frame 2.1 comprises a steel pipe 2.11 and at least one wavy steel bar 2.12 which are transversely arranged, concrete slurry is filled in the steel pipe 2.11 to improve the strength of the steel pipe 2.11, optionally, the steel pipe 2.11 can be replaced by a solid steel bar rod, the top of the wavy steel bar 2.12 is fixedly connected to the steel pipe 2.11, and the bottom of the wavy steel bar is fixedly arranged on the bottom plate 1. Preferably, the number of the wavy steel bars 2.12 is two, the tops of the two wavy steel bars 2.12 are distributed on two opposite sides of the steel pipe 2.11, the bottom space between the two wavy steel bars 2.12 is larger than the top space, and a triangular space structure is formed between the two wavy steel bars 2.12 and the bottom plate 1, so that the structure of the fixed side frame 2.1 is more stable, and the structure of the steel bar net frame arranged on the fixed side frame 2.1 is more stable. Preferably, the wavy steel bar 2.12 is provided with a plurality of horizontal sections 2.121 extending along the transverse direction, each horizontal section 2.121 is embedded in the bottom plate 1 and fixedly connected with the prestressed steel bar structure 1.1, and the horizontal sections 2.121 are arranged to strengthen the connection strength between the fixed side frame 2.1 and the bottom plate 1.
As a preferred technical solution of this embodiment, the bottom plate 1 comprises a prestressed reinforcement structure 1.1 and a concrete layer covering the prestressed reinforcement structure 1.1. Preferably, the prestressed reinforcement structure 1.1 includes a plurality of transverse ribs and a plurality of longitudinal ribs, each transverse rib is crisscrossed with each longitudinal rib, two transverse ribs on two sides are respectively connected with the bottom (trough) of one wavy reinforcement 2.12, and the end parts of the longitudinal ribs are connected at the connection parts of the transverse ribs and the wavy reinforcement 2.12, so that the strength of the base plate 1 and the fixed side frame 2.1 can be enhanced.
As a preferred technical scheme of the embodiment, the hinged end 2.21 of the longitudinal steel bar 2.2 is an annular structure formed by bending the end part of the longitudinal steel bar 2.2, and the annular structure is movably sleeved at the top of the fixed side frame 2.1 and can rotate around the top of the fixed side frame 2.1; the hooked end 2.22 of the longitudinal bars 2.2 is a right-angle structure formed by bending the end of the longitudinal bars 2.2 by 90 degrees, and when each longitudinal bar 2.2 is rotated to a horizontal state, the right-angle structure is just hooked to the top of the fixed side frame 2.1 which is not hinged with the right-angle structure, and does not prevent the direct structure from being rotated away from the fixed side frame 2.1 which is hooked with the right-angle structure. Preferably, two ends of the transverse steel bar 2.3 are respectively bent 180 degrees to form a bending structure, and the bending structure is movably sleeved on the corresponding longitudinal steel bar 2.2, so that the transverse steel bar 2.3 can slide along the longitudinal steel bars 2.2 positioned at two sides; further, the bending structure is provided with a limiting bent part 2.31, the distance between the two limiting bent parts 2.31 on the same transverse steel bar 2.3 is equal to the distance between the two longitudinal steel bars 2.2 on two sides, so that the transverse steel bar 2.3 is prevented from sliding relative to the longitudinal steel bars 2.2 in the length direction, in addition, the limiting bent part 2.31 and the bending part of the bending structure form a lifting rope connecting ring, the lifting ropes are convenient to penetrate through the connecting ring, and the limiting bent parts 2.31 can prevent the two lifting ropes from sliding and folding towards the middle, so that the two longitudinal steel bars 2.2 on two sides are prevented from being deformed due to extrusion of the lifting ropes.
In another embodiment provided by the invention, referring to fig. 14-17, two ends of the transverse steel bar 2.3 are respectively provided with a transverse connection section 2.32, specifically, the transverse connection section 2.32 is fixedly connected to the end of the bending structure, the transverse connection section 2.32 extends to the outer side of the bottom plate 1, the transverse connection section 2.32 is parallel to the transverse steel bar 2.3, and the transverse steel bar 2.3, the two bending structures and the two transverse connection sections 2.32 are integrally formed by one steel bar. When the steel pipe truss prestressed concrete superimposed sheet is used and constructed, the transverse connecting section 2.32 on the steel pipe truss prestressed concrete superimposed sheet extends into the steel bar net frame on the adjacent steel pipe truss prestressed concrete superimposed sheet, so that the connection between the two adjacent steel pipe truss prestressed concrete superimposed sheets is facilitated.
The movable steel bar 4 is movably arranged on the steel tube 2.11, in particular, the circular ring is fixedly connected on the steel tube 2.11, the movable steel bar 4 is arranged in the circular ring in a penetrating manner, the movable steel bar 4 can rotate relative to the circular ring, the movable steel bar 4 can also axially slide along the circular ring, a plurality of parallel connecting rods 5 are fixedly connected on the movable steel bar 4, and the trigger block 6 is welded on the movable steel bar 4. In the process of stacking, storing and transporting the steel pipe truss prestressed concrete superimposed sheet, the steel bar net frame formed by staggering the longitudinal steel bars 2.2 and the transverse steel bars 2.3 is horizontally hooked on the two fixed side frames 2.1, at the moment, the trigger block 6 is staggered with the end parts of the longitudinal steel bars 2.2 forming the hooked ends 2.22, and the connecting steel bars are kept in a vertically downward state under the action of gravity, as shown in fig. 14; when the steel pipe truss prestressed concrete composite slab is lifted, the movable steel bar 4 is moved along the axial direction at the beginning or the end, the trigger block 6 is positioned on the movable path of the hooked end 2.22 of the longitudinal steel bar 2.2, after the lifting is finished, the longitudinal steel bar 2.2 rotates, in the process of horizontally hooking the longitudinal steel bar 2.2 to the fixed side frame 2.1 which is not hinged with the longitudinal steel bar 2.2, the end of the longitudinal steel bar 2.2 forming the hooked end 2.22 is abutted to the corresponding trigger block 6 and presses down the trigger block 6, so that the movable steel bar 4 rotates 90 degrees, the movable steel bar 4 drives each connecting rod 5 on the movable steel bar 4 to rotate 90 degrees to a horizontal state, at the moment, the trigger block 6 is exactly clamped by the hooked end 2.22 of the longitudinal steel bar 2.2, so that each connecting rod 5 cannot rotate, and each connecting rod 5 is kept in the horizontal state, as shown in fig. 16-17, and each connecting rod 5 extends to the outside of the steel bar net frame, so as to be convenient for connecting with the steel bar net frame of the adjacent steel pipe truss prestressed concrete composite slab.
In still another embodiment of the present invention, referring to fig. 18 to 19, two ends of the transverse reinforcement 2.3 are respectively provided with a transverse connection section 2.32, the transverse connection section 2.32 is fixedly connected to an end of the bending structure, the transverse connection section 2.32 extends to the outer side of the bottom plate 1 in the length direction, two ends of the longitudinal reinforcement 2.2 are respectively provided with a longitudinal connection section 2.23, and the longitudinal connection section 2.23 extends to the outer side of the bottom plate 1 in the width direction.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (9)
1. The steel pipe truss prestressed concrete superimposed sheet comprises a bottom plate (1) and a steel reinforcement framework (2) arranged on the bottom plate (1), and is characterized in that the steel reinforcement framework (2) comprises two fixed side frames (2.1), a plurality of longitudinal steel bars (2.2) arranged along the width direction of the bottom plate (1) and a plurality of transverse steel bars (2.3) arranged along the length direction of the bottom plate (1);
the two fixed side frames (2.1) are respectively arranged on two opposite sides of the bottom plate (1);
each longitudinal steel bar (2.2) and each transverse steel bar (2.3) are staggered to form a steel bar net rack, two ends of the steel bar net rack are movably connected to the two fixed side frames (2.1), the steel bar net rack can move and is provided with a hoisting station on the moving stroke, one end of each longitudinal steel bar (2.2) is respectively hooked with the two fixed side frames (2.1) when the hoisting station is used, the other end of each longitudinal steel bar (2.2) is hooked with each transverse steel bar (2.3) of the collection, and each transverse steel bar (2.3) of the collection is a hoisting bearing structure (3);
each longitudinal steel bar (2.2) is provided with a hinging end (2.21) and a hooked end (2.22), each longitudinal steel bar (2.2) is alternately hinged with the two fixed side frames (2.1) along the transverse direction through the hinging end (2.21), and the two longitudinal steel bars (2.2) positioned at the two sides are hinged on the same fixed side frame (2.1);
each transverse steel bar (2.3) is arranged on two longitudinal steel bars (2.2) on two sides in a sliding manner, and the sliding direction is the length direction of the longitudinal steel bars (2.2) on two sides;
when each longitudinal steel bar (2.2) rotates to a horizontal state, the hooked end (2.22) of each longitudinal steel bar (2.2) is hooked on the fixed side frame (2.1) far away from the hinged end (2.21);
and when each longitudinal steel bar (2.2) rotates to the hoisting station, the projections of the hook ends (2.22) of the longitudinal steel bars (2.2) in the transverse direction are overlapped, and each transverse steel bar (2.3) slides to the hook ends (2.22) to be assembled to form the hoisting bearing structure (3).
2. A steel pipe truss prestressed concrete composite slab according to claim 1, characterized in that the fixed side frames (2.1) comprise steel pipes (2.11) arranged transversely and at least one wavy steel bar (2.12), the top of the wavy steel bar (2.12) is fixedly connected to the steel pipes (2.11), and the bottom is fixedly arranged on the bottom plate (1).
3. A steel pipe truss prestressed concrete composite slab according to claim 2, wherein the number of the wavy steel bars (2.12) is two, the tops of the two wavy steel bars (2.12) are distributed on two opposite sides of the steel pipe (2.11), and the bottom spacing of the two wavy steel bars (2.12) is larger than the top spacing.
4. A steel truss prestressed concrete composite slab according to claim 2, wherein said corrugated steel reinforcement (2.12) has a plurality of horizontal segments (2.121) extending in the transverse direction, each of said horizontal segments (2.121) being embedded in the bottom plate (1).
5. A steel pipe truss prestressed concrete composite slab according to claim 2, characterized in that said bottom plate (1) comprises a prestressed reinforcement structure (1.1) and a concrete layer coating said prestressed reinforcement structure (1.1).
6. A steel pipe truss prestressed concrete composite slab according to claim 5, wherein said prestressed reinforcement structure (1.1) includes a plurality of transverse ribs and a plurality of longitudinal ribs, each transverse rib being disposed in crisscross arrangement with each longitudinal rib, two transverse ribs on both sides being connected to the bottom of one wavy reinforcement (2.12), and the ends of the longitudinal ribs being connected to the connection of the transverse ribs and the wavy reinforcement (2.12).
7. A steel pipe truss prestressed concrete composite slab according to claim 1, wherein said hinge ends (2.21) are ring-shaped structures formed by bending ends of longitudinal bars (2.2), said ring-shaped structures being movably sleeved on top of fixed side frames (2.1); the hook end (2.22) is a right-angle structure formed by bending the end part of the longitudinal steel bar (2.2) by 90 degrees.
8. The steel pipe truss prestressed concrete composite slab according to claim 1, wherein two ends of the transverse steel bars (2.3) are respectively bent 180 degrees to form bending structures, and the bending structures are movably sleeved on the corresponding longitudinal steel bars (2.2).
9. A steel pipe truss prestressed concrete composite slab according to claim 8, wherein said bending structure has a limit curvature (2.31).
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| DE1659045B1 (en) * | 1967-12-21 | 1970-02-26 | Baustahlgewebe Gmbh | Reinforcement cage for stiffening thin reinforced concrete panels |
| CN205653944U (en) * | 2015-04-03 | 2016-10-19 | 张波 | Prestressed concrete truss superimposed sheet |
| JP6042021B1 (en) * | 2016-09-15 | 2016-12-14 | 株式会社富士昭技研 | Floor construction method, lifting jig for floor slab unit, and lifting device for floor slab unit |
| CN107130720B (en) * | 2017-06-07 | 2019-04-05 | 中冶建工集团有限公司 | PK prestressed concrete overlapped slab construction method |
| CN209040424U (en) * | 2018-09-21 | 2019-06-28 | 江苏博森建筑设计有限公司 | A kind of handle-type steel bar girder reinforcing rib |
| CN110847156A (en) * | 2019-11-27 | 2020-02-28 | 中铁九局集团第四工程有限公司 | Steel reinforcement cage suitable for underground diaphragm wall of air shaft and use method |
| CN212641878U (en) * | 2020-03-30 | 2021-03-02 | 孟凡林 | Prestressed concrete superimposed sheet bottom plate |
| CN111719753A (en) * | 2020-06-16 | 2020-09-29 | 华南理工大学建筑设计研究院有限公司 | Laminated slab with dragon boat hanging ribs for enhancing bearing capacity at abutted seam and preparation method thereof |
| CN213572575U (en) * | 2020-08-06 | 2021-06-29 | 山东圆梦绿色建筑科技有限公司 | Whole-room prefabricated non-prestressed concrete composite floor slab |
| CN113089920B (en) * | 2021-06-10 | 2022-02-18 | 湖南华廷筑邦住宅工业有限公司 | Steel pipe truss prestressed concrete superimposed sheet |
| CN216920895U (en) * | 2022-03-04 | 2022-07-08 | 宁波甬昇建筑科技有限公司 | Prestressed concrete superimposed sheet of steel bar truss |
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Denomination of invention: A steel pipe truss prestressed concrete composite plate Effective date of registration: 20231228 Granted publication date: 20230630 Pledgee: Chuzhou Wandong Rural Commercial Bank Co.,Ltd. Qingliu sub branch Pledgor: Anhui Jinpeng Green Building Industry Group Co.,Ltd. Registration number: Y2023980074558 |
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