CN110748065A - Assembling tool type truss composite slab and construction method thereof - Google Patents
Assembling tool type truss composite slab and construction method thereof Download PDFInfo
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- CN110748065A CN110748065A CN201911184957.5A CN201911184957A CN110748065A CN 110748065 A CN110748065 A CN 110748065A CN 201911184957 A CN201911184957 A CN 201911184957A CN 110748065 A CN110748065 A CN 110748065A
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 130
- 239000010959 steel Substances 0.000 claims abstract description 130
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 92
- 238000005452 bending Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 abstract description 14
- 210000002435 tendon Anatomy 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
-
- 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
-
- 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
- E04C5/065—Light-weight girders, e.g. with precast parts
- E04C5/0653—Light-weight girders, e.g. with precast parts with precast parts
- E04C5/0656—Light-weight girders, e.g. with precast parts with precast parts with lost formwork
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Abstract
A construction method for assembling tool type truss composite slabs comprises the steps of sequentially manufacturing a shear steel bar support, a supporting upright rod, a truss supporting beam and a bottom plate; the shear steel bar support, the support upright stanchion and the truss support beam are connected and combined; laying truss support beam assemblies on the longitudinal and transverse steel bars; pouring concrete on the prestressed laminated slab; mounting the prestressed laminated slab; pouring second laminated concrete; and disassembling the truss support beam. The assembly tool type truss composite slab further comprises a shear steel bar support, a supporting upright rod, a truss supporting beam and a bottom plate; there is the bottom plate bottom the shear steel bar support of equipment instrument formula truss superimposed sheet, sets up on the bottom plate and moves about freely and quickly end muscle, and the muscle is prestressing tendons at the bottom of the long edge orientation, and the minor face orientation is non-prestressing tendons, shear steel bar support with move about freely and quickly end muscle ligature connection.
Description
Technical Field
The invention belongs to the technical field of buildings, and particularly relates to an assembly tool type truss composite slab.
Background
The traditional composite slab member frequently used in the building field can reduce wet operation steps and construction templates in the construction process and improve the construction efficiency. The traditional laminated slab has the defects of low overall rigidity, poor bending resistance, easiness in cracking, large using amount of reinforcing steel bars and more slab bottom supports. The traditional steel bar truss laminated plate structure generates large deflection deformation in the hoisting process, and even causes cracking of a base plate. In the construction process of the laminated layer, a large number of supports are required to be arranged at the bottom of the laminated slab to improve the integral vertical bearing capacity of the laminated slab, reduce the deflection of the base plate and avoid the cracking of the base plate. Therefore, the traditional composite slab requires a large amount of manpower and material resources in the construction process, and the comprehensive construction cost is high.
The existing traditional steel bar truss laminated slab consists of a steel bar truss and a steel bar concrete bottom plate which are manufactured in advance, and when the steel bar concrete bottom plate is poured, a lower chord of the steel bar truss consisting of an upper chord, a web member and a lower chord is embedded to form an integral stressed laminated slab member. The steel bar truss in the superimposed sheet plays the effect of providing vertical rigidity when pouring superimposed sheet cast in situ concrete, can improve the work progress superimposed sheet bearing capacity. The web member is connected with the upper chord member and the lower chord member to form a space stable structure and improve the shearing resistance of the new and old concrete joint surface. After concrete pouring is finished, the steel bar trusses are completely embedded into the concrete, so that floor slab steel bar configuration transition redundancy is caused, steel bar waste is formed, and the comprehensive manufacturing cost of the laminated slab member is increased.
Disclosure of Invention
The invention aims to provide an assembly tool type truss composite slab and a construction method thereof, which can solve the defects of the prior art.
The invention provides an assembly tool type truss, which comprises a shear steel bar support, a supporting upright post and a truss supporting beam,
the shear steel bar support is composed of a first bent steel bar, a second bent steel bar, a third bent steel bar and a vertical bar, and the shear steel bar support is triangular. The shear steel bar support and the support upright stanchion are mainly used for connecting the laminated plate concrete and the assembling tool type truss support beam into a whole to form a truss structure during the construction of the on-site laminated layer, so that the laminated plate has the capacity of bearing construction load and structure dead weight in the concrete pouring process, and provides rigidity guarantee when the overall strength does not meet the design requirement.
The first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar are of triangular structures, the end portion of the first bent reinforcing steel bar is fixedly welded with the tail portion of the third bent reinforcing steel bar, and the tail portion of the third bent reinforcing steel bar is connected with the vertical rib.
The included angle among the first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar is 45-75 degrees, the vertical reinforcing steel bar is perpendicular to the second bent reinforcing steel bar, and the end part of the vertical reinforcing steel bar is provided with a thread;
the first bent reinforcing steel bar, the second bent reinforcing steel bar, the third bent reinforcing steel bar and the vertical reinforcing steel bar are integrally formed.
The supporting vertical rod is of an inverted T-shaped structure and comprises a horizontal rod and a vertical rod, wherein threads are arranged on the inner side of the vertical rod, a hole is formed in the bottom of the vertical rod in the horizontal direction, and the horizontal rod penetrates through the hole and is welded and fixed at the crossed position;
the invention provides an assembling tool type truss, wherein a truss supporting beam is of an assembling tool type structure, the truss supporting beam is a rectangular steel pipe, and a round hole is formed in the connecting position of the truss supporting beam and a shear steel bar support; the truss supporting beams are arranged in sections and connected in a socket mode.
The truss supporting beam is a rectangular steel pipe, one end of the truss supporting beam is provided with a socket end, the size of the socket end is slightly smaller than the inner diameter of the rectangular steel pipe, the end part of the socket end is provided with a slope, socket joint between the truss supporting beams is facilitated, an ear plate is welded on the outer side of the other end of the truss supporting beam, and reliable connection between the truss supporting beams is guaranteed through the form of knocking the ear plate.
The vertical ribs of the shear steel bar support penetrate through the holes of the truss support beam and are screwed and fixed through nuts, and the nut cushion blocks are arranged at the bending positions of the vertical ribs and the third bent steel bars, so that the shear steel bar support and the truss support beam are tightly combined and firmly connected.
The supporting vertical rod is connected with the truss supporting beam through a lengthened screw rod, the lengthened screw rod can be screwed into the supporting vertical rod, and the other end of the lengthened screw rod penetrates through the truss supporting beam and is screwed and fixed through a nut.
The invention provides an assembly tool type truss composite slab which comprises the shear steel bar support, a truss supporting beam, a supporting upright rod and a bottom plate.
There is the bottom plate shear steel bar support bottom, sets up on the bottom plate and moves about freely and quickly the end muscle, and long edge direction end muscle is prestressing tendons, and the minor face direction is non-prestressing tendons, shear steel bar support with move about freely and quickly end muscle ligature connection.
The shear steel bar support is characterized in that all the first bent steel bars, the second bent steel bars and the third bent steel bars of the shear steel bar support are embedded into the bottom plate to form a certain anchoring length, and the bottom plate and the shear steel bar support form a whole after being processed.
The horizontal rods and the vertical upright rods of the supporting upright rods are partially embedded into the bottom plate to form a certain anchoring length, the bottom plate and the supporting upright rods form a whole after being processed, the bottom plate is tightly connected with the bolts when concrete is poured on a construction site, the connection deformation of the assembled truss can be reduced, the assembling rigidity is high, and the deflection of the laminated slab is small under the load action during construction.
The construction method for assembling the tool type truss composite slab comprises the following steps of:
the method comprises the following steps: manufacturing method of shear-resistant steel bar support
A: cutting off the steel bars with the diameter of 6-10mm according to the construction requirements;
b: performing thread processing on one end of the cut steel bar, wherein the length of the thread is 30-50 mm;
and C, continuously bending the first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar to form a triangular structure, bending the vertical reinforcing steel bar, wherein the vertical reinforcing steel bar is perpendicular to the second bent reinforcing steel bar, and the first bent reinforcing steel bar, the third bent reinforcing steel bar and the vertical reinforcing steel bar are welded and connected at the crossed positions.
Step two: production of supporting vertical rod
A: manufacturing a horizontal rod according to construction requirements;
b: threads are arranged in the vertical upright rod, the depth of the threads is about two thirds of the length of the vertical upright rod, and a horizontal hole is formed in the other end of the vertical upright rod;
c: the horizontal rod passes through the horizontal hole and is welded and fixed at the crossed position;
step three: truss support beam manufacturing method
A: the truss supporting beam is a rectangular steel pipe, and the rectangular steel pipe is provided with holes corresponding to the supporting upright rods and the shear steel bar supports;
b: an ear plate is arranged at the starting end of the truss supporting beam;
c: the end of the truss supporting beam is provided with a socket part, and the end part of the socket part is in a frustum pyramid shape, so that the truss supporting beam can be conveniently inserted.
Step four: making the sole
A, finishing the manufacture of a bottom plate on a mould table, installing templates on four sides of the bottom plate before the manufacture, and controlling the size of a laminated plate;
and B, laying short-side direction reinforcing steel bars after a plurality of bottom plate templates are installed, laying long-side through long reinforcing steel bars, tensioning the through long reinforcing steel bars by adopting tensioning equipment, and binding and linking longitudinal and transverse reinforcing steel bars.
Step five: and the shear steel bar support, the support upright stanchion and the truss support beam are connected and combined.
A, assembling and combining the truss support beams according to requirements
B: the shear steel bar support is fixedly connected with the truss supporting beam through nuts and nut gaskets, and the supporting upright rods are firmly connected with the truss supporting beam through nuts and lengthened bolts;
step six: truss support beam assembly for laying longitudinal and transverse steel bars
A: placing the shear steel bar support, the support upright stanchion and the truss support beam assembly at corresponding positions according to requirements, and binding and connecting the shear steel bar support and the longitudinal and transverse steel bars;
step seven: concrete pouring of prestressed superimposed plate
A: and pouring concrete after the steel bar truss and the truss supporting beam are placed, wherein the thickness of the concrete is 3.5-5cm, and roughening the upper surface after the concrete is poured.
B: and after the concrete is poured, maintaining the laminated slab, cutting the prestressed reinforcement and removing the template after certain strength is achieved, removing the truss supporting beam after the hoisting strength is achieved, and transporting the laminated slab to a storage yard or a construction site. The truss support beam used in the step only plays a role in fixing the position and elevation of the shear steel bar support in the production of the laminated slab, does not bear the load in the construction process, and has different specifications and different functions compared with the truss support beam for hoisting and pouring the concrete laminated layer on site.
Step eight: prestressed laminated slab installation
A: before the prestressed composite slab is installed, the truss support beam assembly is installed on the composite slab and fixed, then the composite slab is hoisted to the corresponding position according to the position requirement of a drawing, and two ends of the composite slab are placed on the structural beams on two sides.
B: binding the upper steel bars of the laminated slabs after the hoisting of the laminated slabs is finished;
step nine: pouring second layer laminated concrete
And after binding the upper reinforcing steel bars, pouring second laminated concrete on the upper part, wherein the pouring height of the concrete is 2-3cm away from the bottom of the truss supporting beam.
Step ten: dismantle truss supporting beam
And (3) finishing the surface of the concrete after pouring the upper concrete, dismantling the truss supporting beam after the concrete degree reaches a certain strength, dismantling the nut firstly when dismantling the truss supporting beam, and dismantling the truss supporting beam and the lengthened bolt in sequence after dismantling the nut. And the nuts, the truss supporting beams and the lengthened bolts are removed and then the subsequent laminated plate is used.
The invention has the advantages that: the composite slab can be processed in a production line in a streamlined manner, the bending strength of the composite slab member is improved, the rigidity is high, and excessive deflection deformation is not easy to generate; the steel bar truss is less in consumption, so that a large amount of steel is saved; the construction on site does not need to set up a bottom support frame body, and the construction is convenient; the truss supporting beam can be disassembled after concrete pouring is completed, and can be recycled. The characteristics can reduce the processing and construction cost of the laminated slab, and contribute to promoting the rapid and efficient development of the assembly type industry.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
Figure 3 is a side view of the present invention.
Fig. 4 is an enlarged view of a shear reinforcement bracket node according to the present invention.
Figure 5 is an enlarged view of the support pole node of the present invention.
Fig. 6 is a partial schematic view of a truss support beam of the present invention.
Figure 7 is a schematic view of the construction of the support upright of the present invention.
Fig. 8 is a schematic structural view of a shear reinforcement bracket according to the present invention.
In the drawings
1 is a bottom plate
2 is a shear steel bar support
3 is a truss support beam
4 is a supporting upright rod
5 is a prestressed tendon
6 is a nut
And 7, an extension bolt.
21 is a first bending steel bar
22 is a second bending steel bar
23 is a third bending reinforcing steel bar
24 are vertical ribs
25 is a nut cushion block
31 is a spigot-and-socket end
And 32 is an ear plate.
41 is a vertical upright rod
42 is a horizontal rod
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to fig. 1 to 8. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The invention provides an assembly tool type truss, which comprises a shear steel bar support, a supporting upright post and a truss supporting beam,
the shear steel bar support is composed of a first bent steel bar, a second bent steel bar, a third bent steel bar and a vertical bar, and the shear steel bar support is triangular. The shear steel bar support and the support upright stanchion are mainly used for connecting the laminated plate concrete and the assembling tool type truss support beam into a whole to form a truss structure during the construction of the on-site laminated layer, so that the laminated plate has the capacity of bearing construction load and structure dead weight in the concrete pouring process, and provides rigidity guarantee when the overall strength does not meet the design requirement.
The first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar are of triangular structures, the end portion of the first bent reinforcing steel bar is fixedly welded with the tail portion of the third bent reinforcing steel bar, and the tail portion of the third bent reinforcing steel bar is connected with the vertical rib.
The included angle among the first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar is 45-75 degrees, the vertical reinforcing steel bar is perpendicular to the second bent reinforcing steel bar, and the end part of the vertical reinforcing steel bar is provided with a thread;
the first bent reinforcing steel bar, the second bent reinforcing steel bar, the third bent reinforcing steel bar and the vertical reinforcing steel bar are integrally formed.
The supporting vertical rod is of an inverted T-shaped structure and comprises a horizontal rod and a vertical rod, wherein threads are arranged on the inner side of the vertical rod, a hole is formed in the bottom of the vertical rod in the horizontal direction, and the horizontal rod penetrates through the hole and is welded and fixed at the crossed position;
the invention provides an assembling tool type truss, wherein a truss supporting beam is of an assembling tool type structure, the truss supporting beam is a rectangular steel pipe, and a round hole is formed in the connecting position of the truss supporting beam and a shear steel bar support; the truss supporting beams are arranged in sections and connected in a socket mode.
The truss supporting beam is a rectangular steel pipe, one end of the truss supporting beam is provided with a socket end, the size of the socket end is slightly smaller than the inner diameter of the rectangular steel pipe, the end part of the socket end is provided with a slope, socket joint between the truss supporting beams is facilitated, an ear plate is welded on the outer side of the other end of the truss supporting beam, and reliable connection between the truss supporting beams is guaranteed through the form of knocking the ear plate.
The vertical ribs of the shear steel bar support penetrate through the holes of the truss support beam and are screwed and fixed through nuts, and the nut cushion blocks are arranged at the bending positions of the vertical ribs and the third bent steel bars, so that the shear steel bar support and the truss support beam are tightly combined and firmly connected.
The supporting vertical rod is connected with the truss supporting beam through a lengthened screw rod, the lengthened screw rod can be screwed into the supporting vertical rod, and the other end of the lengthened screw rod penetrates through the truss supporting beam and is screwed and fixed through a nut.
The invention provides an assembly tool type truss composite slab which comprises the shear steel bar support, a truss supporting beam, a supporting upright rod and a bottom plate.
There is the bottom plate shear steel bar support bottom, sets up on the bottom plate and moves about freely and quickly the end muscle, and long edge direction end muscle is prestressing tendons, and the minor face direction is non-prestressing tendons, shear steel bar support with move about freely and quickly end muscle ligature connection.
The shear steel bar support is characterized in that all the first bent steel bars, the second bent steel bars and the third bent steel bars of the shear steel bar support are embedded into the bottom plate to form a certain anchoring length, and the bottom plate and the shear steel bar support form a whole after being processed.
The horizontal rods and the vertical upright rods of the supporting upright rods are partially embedded into the bottom plate to form a certain anchoring length, the bottom plate and the supporting upright rods form a whole after being processed, the bottom plate is tightly connected with the bolts when concrete is poured on a construction site, the connection deformation of the assembled truss can be reduced, the assembling rigidity is high, and the deflection of the laminated slab is small under the load action during construction.
The construction method for assembling the tool type truss composite slab comprises the following steps of:
the method comprises the following steps: manufacturing method of shear-resistant steel bar support
A: cutting off the steel bars with the diameter of 6-10mm according to the construction requirements;
b: performing thread processing on one end of the cut steel bar, wherein the length of the thread is 30-50 mm;
and C, continuously bending the first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar to form a triangular structure, bending the vertical reinforcing steel bar, wherein the vertical reinforcing steel bar is perpendicular to the second bent reinforcing steel bar, and the first bent reinforcing steel bar, the third bent reinforcing steel bar and the vertical reinforcing steel bar are welded and connected at the crossed positions.
Step two: production of supporting vertical rod
A: manufacturing a horizontal rod according to construction requirements;
b: threads are arranged in the vertical upright rod, the depth of the threads is about two thirds of the length of the vertical upright rod, and a horizontal hole is formed in the other end of the vertical upright rod;
c: the horizontal rod passes through the horizontal hole and is welded and fixed at the crossed position;
step three: truss support beam manufacturing method
A: the truss supporting beam is a rectangular steel pipe, and the rectangular steel pipe is provided with holes corresponding to the supporting upright rods and the shear steel bar supports;
b: an ear plate is arranged at the starting end of the truss supporting beam;
c: the end of the truss supporting beam is provided with a socket part, and the end part of the socket part is in a frustum pyramid shape, so that the truss supporting beam can be conveniently inserted.
Step four: making the sole
A, finishing the manufacture of a bottom plate on a mould table, installing templates on four sides of the bottom plate before the manufacture, and controlling the size of a laminated plate;
and B, laying short-side direction reinforcing steel bars after a plurality of bottom plate templates are installed, laying long-side through long reinforcing steel bars, tensioning the through long reinforcing steel bars by adopting tensioning equipment, and binding and linking longitudinal and transverse reinforcing steel bars.
Step five: and the shear steel bar support, the support upright stanchion and the truss support beam are connected and combined.
A, assembling and combining the truss support beams according to requirements
B: the shear steel bar support is fixedly connected with the truss supporting beam through nuts and nut gaskets, and the supporting upright rods are firmly connected with the truss supporting beam through nuts and lengthened bolts;
step six: truss support beam assembly for laying longitudinal and transverse steel bars
A: placing the shear steel bar support, the support upright stanchion and the truss support beam assembly at corresponding positions according to requirements, and binding and connecting the shear steel bar support and the longitudinal and transverse steel bars;
step seven: concrete pouring of prestressed superimposed plate
A: and pouring concrete after the steel bar truss and the truss supporting beam are placed, wherein the thickness of the concrete is 3.5-5cm, and roughening the upper surface after the concrete is poured.
B: and after the concrete is poured, maintaining the laminated slab, cutting the prestressed reinforcement and removing the template after certain strength is achieved, removing the truss supporting beam after the hoisting strength is achieved, and transporting the laminated slab to a storage yard or a construction site. The truss support beam used in the step only plays a role in fixing the position and elevation of the shear steel bar support in the production of the laminated slab, does not bear the load in the construction process, and has different specifications and different functions compared with the truss support beam for hoisting and pouring the concrete laminated layer on site.
Step eight: prestressed laminated slab installation
A: before the prestressed composite slab is installed, the truss support beam assembly is installed on the composite slab and fixed, then the composite slab is hoisted to the corresponding position according to the position requirement of a drawing, and two ends of the composite slab are placed on the structural beams on two sides.
B: binding the upper steel bars of the laminated slabs after the hoisting of the laminated slabs is finished;
step nine: pouring second layer laminated concrete
And after binding the upper reinforcing steel bars, pouring second laminated concrete on the upper part, wherein the pouring height of the concrete is 2-3cm away from the bottom of the truss supporting beam.
Step ten: dismantle truss supporting beam
And (3) finishing the surface of the concrete after pouring the upper concrete, dismantling the truss supporting beam after the concrete degree reaches a certain strength, dismantling the nut firstly when dismantling the truss supporting beam, and dismantling the truss supporting beam and the lengthened bolt in sequence after dismantling the nut. And the nuts, the truss supporting beams and the lengthened bolts are removed and then the subsequent laminated plate is used.
Example 2
The difference with embodiment 1 mainly lies in, truss supporting beam's structure is circular steel pipe, and there is the bottom plate shear steel bar support bottom related, sets up end muscle with great ease on the bottom plate, and long edge direction end muscle is non-prestressed muscle, and the minor face direction is non-prestressed muscle, shear steel bar support with great ease end muscle ligature connection.
The structure of the truss is not limited to a rectangular steel pipe, a round steel pipe can be adopted, the material is not limited, and I-shaped steel and channel steel can also be adopted; the structure of the connecting piece is not limited to the use of pins and screw threads.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A construction method for assembling tool type truss composite slabs is characterized in that,
the method comprises the following steps:
the method comprises the following steps: manufacturing method of shear-resistant steel bar support
A: cutting off the steel bars with the diameter of 6-10mm according to the construction requirements;
b: performing thread processing on one end of the cut steel bar, wherein the length of the thread is 30-50 mm;
c, continuously bending the first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar to form a triangular structure, and then bending the vertical reinforcing steel bar, wherein the vertical reinforcing steel bar is vertical to the second bent reinforcing steel bar, and the crossing positions of the first bent reinforcing steel bar, the third bent reinforcing steel bar and the vertical reinforcing steel bar are welded and connected;
step two: production of supporting vertical rod
A: manufacturing a horizontal rod according to construction requirements;
b: threads are arranged in the vertical upright rod, the depth of the threads is about two thirds of the length of the vertical upright rod, and a horizontal hole is formed in the other end of the vertical upright rod;
c: the horizontal rod passes through the horizontal hole and is welded and fixed at the crossed position;
step three: truss support beam manufacturing method
A: the truss supporting beam is a rectangular steel pipe, and the rectangular steel pipe is provided with holes corresponding to the supporting upright rods and the shear steel bar supports;
b: an ear plate is arranged at the starting end of the truss supporting beam;
c: the end part of the socket part is in a frustum pyramid shape, so that the truss supporting beam can be conveniently inserted;
step four: making the sole
A, finishing the manufacture of a bottom plate on a mould table, installing templates on four sides of the bottom plate before the manufacture, and controlling the size of a laminated plate;
b, laying short-side direction reinforcing steel bars after a plurality of bottom plate templates are installed, laying long-side through long reinforcing steel bars, tensioning the through long reinforcing steel bars by adopting tensioning equipment, and binding and linking longitudinal and transverse reinforcing steel bars;
step five: the shear steel bar support, the support upright stanchion and the truss support beam are connected and combined;
a, assembling and combining the truss support beams according to requirements
B: the shear steel bar support is fixedly connected with the truss supporting beam through nuts and nut gaskets, and the supporting upright rods are firmly connected with the truss supporting beam through nuts and lengthened bolts;
step six: truss support beam assembly for laying longitudinal and transverse steel bars
A: placing the shear steel bar support, the support upright stanchion and the truss support beam assembly at corresponding positions according to requirements, and binding and connecting the shear steel bar support and the longitudinal and transverse steel bars;
step seven: concrete pouring of prestressed superimposed plate
A: after the steel bar truss and the truss supporting beam are placed, pouring concrete, wherein the thickness of the concrete is 3.5-5cm, and after the concrete is poured, roughening the upper surface;
b: after the concrete is poured, maintaining the laminated slab, cutting off the prestressed reinforcement and removing the template after certain strength is achieved, removing the truss supporting beam after the hoisting strength is achieved, and transporting the laminated slab to a storage yard or a construction site; the truss support beam used in the step only plays roles in fixing the position and the elevation of the shear steel bar support in the production of the composite slab, does not bear the load in the construction process, and has different specifications and different roles compared with the truss support beam for hoisting and pouring the concrete composite layer on site;
step eight: prestressed laminated slab installation
A: before the prestressed composite slab is installed, the truss support beam assembly is installed on the composite slab and fixed, then the composite slab is hoisted to a corresponding position according to the position requirement of a drawing, and two ends of the composite slab are placed on the structural beams on two sides;
b: binding the upper steel bars of the laminated slabs after the hoisting of the laminated slabs is finished;
step nine: pouring second layer laminated concrete
After binding the upper reinforcing steel bars, pouring second laminated concrete on the upper part, wherein the pouring height of the concrete is 2-3cm away from the bottom of the truss supporting beam;
after the upper concrete is poured, performing light collection treatment on the surface of the concrete, dismantling the truss supporting beam after the concrete degree reaches a certain strength, dismantling the nut firstly when dismantling the truss supporting beam, and dismantling the truss supporting beam and the lengthened bolt in sequence after dismantling the nut;
and the nuts, the truss supporting beams and the lengthened bolts are removed and then the subsequent laminated plate is used.
2. The utility model provides an assembly tool formula truss superimposed sheet which characterized in that, assembly tool formula truss superimposed sheet still includes shear steel bar support, supports pole setting, truss supporting beam and bottom plate.
3. The assembly tool type truss composite slab as claimed in claim 2, wherein the shear reinforcement bracket of the assembly tool type truss composite slab is composed of a first bent reinforcement, a second bent reinforcement, a third bent reinforcement, and a vertical reinforcement, and the shear reinforcement bracket is triangular;
the first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar are of triangular structures, the end part of the first bent reinforcing steel bar is fixedly welded with the tail part of the third bent reinforcing steel bar, and the tail part of the third bent reinforcing steel bar is connected with the vertical bar;
the included angle among the first bent reinforcing steel bar, the second bent reinforcing steel bar and the third bent reinforcing steel bar is 45-75 degrees, the vertical reinforcing steel bar is perpendicular to the second bent reinforcing steel bar, and the end part of the vertical reinforcing steel bar is provided with a thread;
the first bent reinforcing steel bar, the second bent reinforcing steel bar, the third bent reinforcing steel bar and the vertical reinforcing steel bar are integrally formed.
4. The assembly tool type truss composite slab as claimed in claim 3, wherein the supporting vertical rods are of an inverted T-shaped structure and comprise horizontal rods and vertical rods, wherein threads are arranged on the inner sides of the vertical rods, holes are formed in the bottoms of the vertical rods in the horizontal direction, and the horizontal rods penetrate through the holes and are welded and fixed at the crossing positions.
5. The assembly tool type truss composite slab as claimed in claim 3, wherein the truss support beam is of an assembly tool type structure, and the connecting position of the truss support beam and the shear-resistant steel bar support is provided with a circular hole; the truss support beams are arranged in sections and connected in a socket mode;
one end of each truss supporting beam is provided with a socket end, the size of each socket end is slightly smaller than the inner diameter of the steel pipe, the end part of each socket end is provided with a slope, socket joint between the truss supporting beams is facilitated, and an ear plate is welded on the outer side of the other end of each truss supporting beam;
the vertical ribs of the shear steel bar support penetrate through the holes of the truss support beams and are screwed and fixed through nuts, and nut cushion blocks are arranged at the bending positions of the vertical ribs and the third bent steel bars;
the supporting vertical rod is connected with the truss supporting beam through a lengthened screw rod, the lengthened screw rod can be screwed into the supporting vertical rod, and the other end of the lengthened screw rod penetrates through the truss supporting beam and is screwed and fixed through a nut.
6. The assembly tool type truss composite slab as claimed in claim 2, wherein the shear reinforcement support of the assembly tool type truss composite slab has a bottom plate at the bottom, the bottom plate is provided with longitudinal and transverse bottom ribs, the bottom rib in the long side direction is a prestressed rib, the bottom rib in the short side direction is a non-prestressed rib, and the shear reinforcement support is bound and connected with the longitudinal and transverse bottom ribs;
the shear steel bar support is characterized in that all the first bent steel bars, the second bent steel bars and the third bent steel bars of the shear steel bar support are embedded into the bottom plate to form a certain anchoring length, and the bottom plate and the shear steel bar support form a whole after being processed.
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| CN112976256A (en) * | 2021-02-05 | 2021-06-18 | 王示 | Production process of prestressed concrete laminated slab bottom plate |
| CN113931364A (en) * | 2021-10-29 | 2022-01-14 | 筑友智造建设科技集团有限公司 | Construction method of prestressed thin plate with detachable ribs and laminated slab |
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| CN114075851A (en) * | 2020-08-15 | 2022-02-22 | 长沙巨星轻质建材股份有限公司 | Bottom plate for assembling type concrete prestress overlapping |
| CN114215099A (en) * | 2021-12-17 | 2022-03-22 | 中国十七冶集团有限公司 | Method for efficiently laying through long steel bars at bottom of converter high-span foundation |
| CN114673287A (en) * | 2022-04-20 | 2022-06-28 | 中建三局集团有限公司 | Novel laminated slab construction method |
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