An assembly tool type truss composite plate and construction method thereof

Abstract

An assembly tool type truss composite plate and a construction method thereof, comprising an assembly tool type truss, wherein the assembly tool type truss also comprises a shear steel bar bracket and a truss support beam; wherein the shear steel bar bracket is in the shape of a pyramid. The truss support beam in the assembly tool type truss is a tool type assembly structure, wherein a circular hole is provided at the connection position between the truss support beam and the shear steel bar bracket; the truss support beam is arranged in sections, and the truss support beams are connected by a socket method. The construction method thereof comprises sequentially manufacturing a shear steel bar bracket, a T-shaped connection part, a truss support beam, and a bottom plate; connecting a steel bar shear steel bar bracket and a truss support beam; laying a shear steel bar bracket and a truss support beam assembly on the longitudinal and transverse steel bars; pouring concrete of the prestressed composite plate; installing the prestressed composite plate; pouring the second layer of composite concrete; and disassembling the truss support beam.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and in particular relates to an assembly tool type truss composite plate, which is a support-free composite plate. Background Art

[0002] Traditional composite slab components frequently used in the construction field can reduce wet work steps and construction formwork during the construction process, thereby improving construction efficiency. The shortcomings of traditional composite slabs are low overall stiffness, poor bending resistance, easy cracking, large amount of steel bars, and a large number of bottom supports. The traditional reinforced truss composite slab structure produces large deflection deformation during the hoisting process, and may even cause the base plate to crack. During the construction of the composite layer, a large number of supports must be set at the bottom of the slab to increase the overall vertical bearing capacity of the composite slab, reduce the deflection of the base plate, and avoid cracking of the base plate. Therefore, the construction of traditional composite slabs requires a lot of manpower and material resources, resulting in a high overall construction cost.

[0003] The existing traditional reinforced truss composite slab consists of a prefabricated reinforced truss and a reinforced concrete base plate. When the reinforced concrete base plate is poured, the lower chord of the reinforced truss composed of the upper chord, the web and the lower chord is embedded to form an integral load-bearing composite slab component. The reinforced truss in the composite slab provides vertical stiffness when pouring the cast-in-place concrete of the composite layer, which can improve the bearing capacity of the composite slab during the construction process. The web connects the upper and lower chords to form a spatially stable structure and improves the shear resistance of the interface between the new and old concrete. After the concrete is poured, the reinforced truss is completely embedded in the concrete, resulting in excessive redundancy in the configuration of the floor slab steel bars, resulting in "waste" of steel bars, and increasing the comprehensive manufacturing cost of the composite slab components. Summary of the invention

[0004] The object of the present invention is to provide an assembly tool type truss composite plate and a construction method thereof, which can solve the deficiencies of the prior art.

[0005] The present invention provides an assembly tool type truss, wherein the shear steel bar support is composed of a first bent steel bar, a second bent steel bar, a first flat bar, a second flat bar, and a connecting steel bar. The shear steel bar support is in the shape of a pyramid. During the on-site construction of the composite layer, its main function is to connect the composite slab concrete and the assembly tool type truss support beam into a whole to form a truss structure, so that the composite slab has the ability to bear the construction load and the self-weight of the structure during the pouring of concrete, and provides stiffness guarantee when the overall strength does not meet the design requirements.

[0006] A first flat bar is extended outward from a starting end of the first bent steel bar, and a second flat bar is extended outward from a starting end of the second bent steel bar.

[0007] The end of the first bent steel bar merges with the end of the second bent steel bar and is in an arc shape.

[0008] The first flat reinforcement and the first bent reinforcement form an obtuse angle; the second flat reinforcement and the second bent reinforcement form an obtuse angle.

[0009] The first flat reinforcement, the first bent reinforcement, the second bent reinforcement and the second flat reinforcement are integrally formed. The two integrally formed reinforcements are symmetrically arranged and used in combination, and a connecting reinforcement is provided between the two to ensure the stability of the shear reinforcement bracket.

[0010] The present invention provides an assembly tool-type truss, wherein the truss support beam is a tool-type assembly structure, the truss support beam is a rectangular steel pipe, and a circular hole is set at the connection position with the shear steel bar support; the truss support beam is arranged in sections, and the truss support beams are connected by a socket-and-spigot manner.

[0011] The truss support beam is a rectangular steel pipe with a socket end at one end. The size of the socket end is slightly smaller than the inner diameter of the rectangular steel pipe, and a slope is provided at the end of the socket end to facilitate the socketing between the truss support beams. An ear plate is welded on the outside of the other end of the truss support beam, and a reliable connection between the truss support beams is ensured by knocking the ear plate.

[0012] The present invention provides an assembly tool type truss composite plate, which comprises the above-mentioned shear steel support bracket, truss support beam, T-shaped connection part and bottom plate. The bottom of the shear steel support bracket has a bottom plate, and longitudinal and transverse bottom bars are arranged on the bottom plate. The bottom bars in the long side direction are prestressed bars, and the short side direction is non-prestressed bars. The shear steel support bracket is tied and connected with the longitudinal and transverse bottom bars.

[0013] The entire first flat reinforcement and the second flat reinforcement and part of the first bent reinforcement and the second bent reinforcement of the shear steel bar support are buried in the bottom plate to form a certain anchoring length. After the bottom plate is processed, it forms a whole with the shear steel bar support.

[0014] The shear-resistant steel bar support is connected to the upper truss support beam via a T-shaped connection.

[0015] Preferably, the T-shaped connecting portion further comprises a horizontal rod, and a vertical rod is vertically arranged in the middle section of the horizontal rod.

[0016] Protrusions are arranged on both sides of the horizontal rod to limit the relative sliding between the shear steel bar support and the T-shaped connecting part.

[0017] The upper half of the vertical rod is provided with a pin hole.

[0018] A pin plate is arranged in the pin hole, and the top surface of the pin plate is a sloped surface.

[0019] A construction method for assembling a tool-type truss composite plate comprises the following steps:

[0020] Step 1: Fabrication of shear reinforcement support

[0021] A: According to the construction requirements, cut the steel bars with a diameter of 6-10mm;

[0022] B: Bend the cut steel bars;

[0023] The angle between the bent first flat reinforcement and the first bent reinforcement is between 110 and 145 degrees, and the curvature between the first bent reinforcement and the second bent reinforcement is between 45 and 60 degrees.

[0024] C: The bent steel bars are arranged symmetrically, and the shear-resistant steel support is finally formed through the welding of horizontal connecting bars.

[0025] Step 2: Making the T-shaped connection

[0026] A: Make horizontal rods according to construction requirements;

[0027] B: Weld bulges at both ends of the horizontal rod;

[0028] C: Make vertical poles according to construction requirements;

[0029] D: Slot the upper half of the vertical pole as a pin hole;

[0030] E: The horizontal rod and the vertical rod are welded to form a T-shaped connection.

[0031] Step 3: Make the truss support beam

[0032] A: The truss support beam is made of rectangular steel pipe, and holes are opened at the corresponding positions where the rectangular steel pipe and the T-shaped connection part are connected;

[0033] B: Install the ear plate at the beginning of the truss support beam;

[0034] C: A socket is made at the end of the truss supporting beam, and the end of the socket is in a prism shape to facilitate the insertion of the truss supporting beam.

[0035] Step 4: Make the base

[0036] A: The production of the base plate is completed on the mold table. Before production, the templates are installed on the four sides of the base plate to control the size of the composite plate;

[0037] B: After installing multiple bottom plate formworks, lay the short side reinforcement, then lay the long side full-length reinforcement, use tensioning equipment to tension the full-length reinforcement, and tie and connect the longitudinal and transverse reinforcement.

[0038] Step 5: Connection combination of steel shear reinforcement support and truss support beam.

[0039] A: Assemble the truss support beams according to your needs.

[0040] B: Connect the shear reinforcement bracket to the truss support beam through a T-shaped connection and fix it by installing a pin plate in the pin hole.

[0041] Step 6: Lay shear reinforcement brackets and truss support beam assemblies on the longitudinal and transverse reinforcements

[0042] A: Place the shear reinforcement bracket and truss support beam assembly at the corresponding position as required, and connect the shear reinforcement bracket with the longitudinal and transverse reinforcements by binding;

[0043] Step 7: Prestressed composite slab concrete pouring

[0044] A: After the shear steel support bracket and truss support beam are placed, concrete is poured with a thickness of 3.5-5cm. After the concrete pouring is completed, the upper surface is roughened.

[0045] B: After pouring concrete, the composite slab is cured. After reaching a certain strength, the prestressed steel bars are cut off and the formwork is removed. After reaching the lifting strength, the truss support beams are removed and the composite slab is transported to the yard or construction site. The truss support beams used in this step are only used to fix the position and elevation of the shear steel support brackets in the production of the composite slab. They do not bear the load during the construction process. They are different in specifications and function from the truss support beams used for on-site lifting and pouring of the concrete composite layer.

[0046] Step 8: Prestressed composite slab installation

[0047] A: Before installing the prestressed composite slab, install the truss support beam to the composite slab and fix it; then hoist the composite slab to the corresponding position according to the position requirements of the drawing, and place the two ends of the composite slab on the structural beams on both sides.

[0048] B: After the composite slab is hoisted, tie the upper reinforcement of the composite slab;

[0049] Step 9: Pour the second layer of laminated concrete

[0050] After tying the upper steel bars, pour the second layer of composite concrete. The concrete pouring height is 2.5-3cm from the top of the shear steel bar support.

[0051] Step 10: Remove the truss support beams

[0052] After pouring the upper concrete, the concrete surface is polished. When the concrete reaches a certain strength, the truss support beam is removed. When removing the truss support beam, the pin plate is removed first. After removing the pin plate, the truss support beam and the T-shaped connection are removed in turn. The subsequent composite slab can be used after the pin plate, truss support beam and T-shaped connection are removed.

[0053] The advantages of the present invention are: it can be processed in a streamlined manner on a production line, the bending strength of the composite plate components is improved, the rigidity is large, and it is not easy to produce excessive deflection and deformation; the amount of steel trusses used is small, saving a lot of steel; no bottom support frame needs to be set up during on-site construction, and the construction is convenient; the truss support beam can be removed after the concrete is poured and can be recycled. The above characteristics can reduce the processing and construction costs of the composite plate, and help promote the rapid and efficient development of the prefabricated industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present invention is further described below in conjunction with the accompanying drawings:

[0055] Attached Figure 1 It is a structural schematic diagram of the present invention.

[0056] Attached Figure 2 It is the north elevation view of the present invention.

[0057] Attached Figure 3 It is an enlarged view of a node of the present invention.

[0058] Attached Figure 4 It is a partial schematic diagram of a truss support beam of the present invention.

[0059] Attached Figure 5 It is a structural schematic diagram of the shear-resistant steel bar support of the present invention.

[0060] Attached Figure 6 It is a structural schematic diagram of the T-shaped connecting portion of the present invention.

[0061] In the picture

[0062] 1 is the bottom plate

[0063] 2 is the shear reinforcement support

[0064] 3 is the truss support beam

[0065] 4 is T-type connection

[0066] 5 is prestressed tendon

[0067] 6 is a pin plate.

[0068] 21 is the second bending rib

[0069] 22 is the first bending rib

[0070] 23 is the connecting rib

[0071] 24 is the second flat rib

[0072] 25 is the first horizontal rib.

[0073] 31 is the socket end

[0074] 32 is an ear plate.

[0075] 41 is the horizontal bar

[0076] 42 is convex

[0077] 43 is the vertical pole

[0078] 44 is a pin hole. DETAILED DESCRIPTION

[0079] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0080] See also Figures 1 to 6 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0081] Example 1

[0082] The present invention provides an assembly tool type truss, wherein the shear steel bar support 2 is composed of a first bent steel bar 22, a second bent steel bar 21, a first flat bar 25, a second flat bar 24, and a connecting steel bar 23. The shear steel bar support is pyramidal in shape. During the on-site construction of the composite layer, its main function is to connect the composite slab concrete and the assembly tool type truss support beam into a whole to form a truss structure, so that the composite slab has the ability to bear the construction load and the self-weight of the structure during the pouring of concrete, and provide stiffness guarantee when the overall strength does not meet the design requirements.

[0083] A first flat bar is extended outward from a starting end of the first bent steel bar, and a second flat bar is extended outward from a starting end of the second bent steel bar.

[0084] The end of the first bent steel bar merges with the end of the second bent steel bar and is in an arc shape.

[0085] The first flat reinforcement and the first bent reinforcement form an obtuse angle; the second flat reinforcement and the second bent reinforcement form an obtuse angle.

[0086] The first flat reinforcement, the first bent reinforcement, the second bent reinforcement and the second flat reinforcement are integrally formed. The two integrally formed reinforcements are symmetrically arranged and used in combination, and a connecting reinforcement is provided between the two to ensure the stability of the shear reinforcement bracket.

[0087] The present invention provides an assembly tool-type truss, wherein the truss support beam 3 is a tool-type assembly structure, the truss support beam is a rectangular steel pipe, and a circular hole is set at the connection position with the shear steel bar support; the truss support beam is arranged in sections, and the truss support beams are connected by socket and spigot.

[0088] The truss support beam is a rectangular steel pipe, and a socket end 31 is arranged at one end. The size of the socket end is slightly smaller than the inner diameter of the rectangular steel pipe, and a slope is arranged at the end of the socket end to facilitate the socketing between the truss support beams. An ear plate 32 is welded on the outer side of the other end of the truss support beam, and a reliable connection between the truss support beams is ensured by knocking the ear plate.

[0089] The present invention provides an assembly tool type truss composite plate, which comprises the above-mentioned shear steel support bracket, truss support beam, T-shaped connection part and bottom plate. The bottom of the shear steel support bracket has a bottom plate 1, and longitudinal and transverse bottom bars are arranged on the bottom plate. The bottom bars in the long side direction are prestressed bars, and the short side direction is non-prestressed bars. The shear steel support bracket is tied and connected with the longitudinal and transverse bottom bars.

[0090] The entire first flat reinforcement and the second flat reinforcement and part of the first bent reinforcement and the second bent reinforcement of the shear steel bar support are buried in the bottom plate to form a certain anchoring length. After the bottom plate is processed, it forms a whole with the shear steel bar support.

[0091] The shear-resistant steel bar support is connected to the upper truss support beam via a T-shaped connection portion 4 .

[0092] Preferably, the T-shaped connecting portion further comprises a horizontal rod 41, and a vertical rod 43 is vertically arranged in the middle section of the horizontal rod.

[0093] Protrusions 42 are provided on both sides of the horizontal rod to limit the relative sliding between the shear steel bar support and the T-shaped connecting part.

[0094] The upper half of the vertical rod is provided with a pin hole.

[0095] A pin plate 6 is arranged in the pin hole, and the top surface of the pin plate is a sloped surface.

[0096] A construction method for assembling a tool-type truss composite plate comprises the following steps:

[0097] Step 1: Fabrication of shear reinforcement support

[0098] A: According to the construction requirements, cut the steel bars with a diameter of 6-10mm;

[0099] B: Bend the cut steel bars;

[0100] The angle between the bent first flat reinforcement and the first bent reinforcement is between 110 and 145 degrees, and the curvature between the first bent reinforcement and the second bent reinforcement is between 45 and 60 degrees.

[0101] C: The bent steel bars are arranged symmetrically, and the shear-resistant steel support is finally formed through the welding of horizontal connecting bars.

[0102] Step 2: Making the T-shaped connection

[0103] A: Make horizontal rods according to construction requirements;

[0104] B: Weld bulges at both ends of the horizontal rod;

[0105] C: Make vertical poles according to construction requirements;

[0106] D: Slot the upper half of the vertical pole as a pin hole;

[0107] E: The horizontal rod and the vertical rod are welded to form a T-shaped connection.

[0108] Step 3: Make the truss support beam

[0109] A: The truss support beam is made of rectangular steel pipe, and holes are opened at the corresponding positions where the rectangular steel pipe and the T-shaped connection part are connected;

[0110] B: Install the ear plate at the beginning of the truss support beam;

[0111] C: A socket is made at the end of the truss supporting beam, and the end of the socket is in a prism shape to facilitate the insertion of the truss supporting beam.

[0112] Step 4: Make the base

[0113] A: The production of the base plate is completed on the mold table. Before production, the templates are installed on the four sides of the base plate to control the size of the composite plate;

[0114] B: After installing multiple bottom plate formworks, lay the short side reinforcement, then lay the long side full-length reinforcement, use tensioning equipment to tension the full-length reinforcement, and tie and connect the longitudinal and transverse reinforcement.

[0115] Step 5: Connection combination of steel shear reinforcement support and truss support beam.

[0116] A: Assemble the truss support beams according to your needs.

[0117] B: Connect the shear reinforcement bracket to the truss support beam through a T-shaped connection and fix it by installing a pin plate in the pin hole.

[0118] Step 6: Lay shear reinforcement brackets and truss support beam assemblies on the longitudinal and transverse reinforcements

[0119] A: Place the shear reinforcement bracket and truss support beam assembly at the corresponding position as required, and connect the shear reinforcement bracket with the longitudinal and transverse reinforcements by binding;

[0120] Step 7: Prestressed composite slab concrete pouring

[0121] A: After the shear steel support bracket and truss support beam are placed, concrete is poured with a thickness of 3.5-5cm. After the concrete pouring is completed, the upper surface is roughened.

[0122] B: After pouring concrete, the composite slab is cured. After reaching a certain strength, the prestressed steel bars are cut off and the formwork is removed. After reaching the lifting strength, the truss support beams are removed and the composite slab is transported to the yard or construction site. The truss support beams used in this step are only used to fix the position and elevation of the shear steel support brackets in the production of the composite slab. They do not bear the load during the construction process. They are different in specifications and function from the truss support beams used for on-site lifting and pouring of the concrete composite layer.

[0123] Step 8: Prestressed composite slab installation

[0124] A: Before installing the prestressed composite slab, install the truss support beam to the composite slab and fix it; then hoist the composite slab to the corresponding position according to the position requirements of the drawing, and place the two ends of the composite slab on the structural beams on both sides.

[0125] B: After the composite slab is hoisted, tie the upper reinforcement of the composite slab;

[0126] Step 9: Pour the second layer of laminated concrete

[0127] After tying the upper steel bars, pour the second layer of composite concrete. The concrete pouring height is 2.5-3cm from the top of the shear steel bar support.

[0128] Step 10: Remove the truss support beams

[0129] After pouring the upper concrete, the concrete surface is polished. When the concrete reaches a certain strength, the truss support beam is removed. When removing the truss support beam, the pin plate is removed first. After removing the pin plate, the truss support beam and the T-shaped connection are removed in turn. The subsequent composite slab can be used after the pin plate, truss support beam and T-shaped connection are removed.

[0130] Example 2

[0131] The main difference from Example 1 is that the structure of the truss support beam is a circular steel pipe, the shear steel bar bracket involved has a bottom plate at the bottom, longitudinal and transverse bottom bars are arranged on the bottom plate, the bottom bars in the long side direction are non-prestressed bars, and the bottom bars in the short side direction are non-prestressed bars, and the shear steel bar bracket is connected to the longitudinal and transverse bottom bars by binding.

[0132] The structure of the truss is not limited to rectangular steel pipes, and circular steel pipes may also be used. The material is not limited, and I-beams and channel steels may also be used. The structure of the connector is not limited to pins and threaded connections.

[0133] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A construction method for assembling a tool-type truss composite plate, characterized in that: The following steps are involved: Step 1: Fabrication of shear reinforcement support A: According to the construction requirements, cut the steel bars with a diameter of 6-10mm; B: Bend the cut steel bars; The angle between the first flat steel bar and the first bent steel bar is between 110 and 145 degrees, and the arc between the first bent steel bar and the second bent steel bar is between 45 and 60 degrees; C: The bent steel bars are arranged symmetrically, and the shear steel support is finally formed by welding the horizontal connecting bars; Step 2: Making the T-shaped connection A: Make horizontal rods according to construction requirements; B: Weld bulges at both ends of the horizontal rod; C: Make vertical poles according to construction requirements; D: Slot the upper half of the vertical pole to form a pin hole; E: The horizontal rod and the vertical rod are welded to form a T-shaped connection; Step 3: Make the truss support beam A: Open holes at the corresponding positions where the truss support beam is connected to the T-shaped connection part; B: Install the ear plate at the beginning of the truss support beam; C: A socket is made at the end of the truss support beam, and the end of the socket is a prism shape to facilitate the insertion of the truss support beam; Step 4: Make the base A: The production of the base plate is completed on the mold table. Before production, the templates are installed on the four sides of the base plate to control the size of the composite plate; B: After installing multiple bottom plate templates, lay the short side steel bars, then lay the long side full-length steel bars, and use tensioning equipment to tension the full-length steel bars, and tie and link the longitudinal and transverse steel bars; Step 5: Connection combination of steel shear reinforcement support and truss support beam A: Assemble the truss support beams according to the needs; B: Connect the shear reinforcement bracket to the truss support beam through a T-shaped connection, and install a pin plate in the pin hole to fix it; Step 6: Lay shear reinforcement brackets and truss support beam assemblies on the longitudinal and transverse reinforcements A: Place the shear reinforcement bracket and truss support beam assembly at the corresponding position as required, and connect the shear reinforcement bracket with the longitudinal and transverse reinforcements by binding; Step 7: Prestressed composite slab concrete pouring A: After the shear steel support and truss support beam are placed, concrete is poured with a thickness of 3.5-5cm. After the concrete pouring is completed, the upper surface is roughened; B: After pouring concrete, the composite slab is cured. After reaching a certain strength, the prestressed steel bars are cut off and the formwork is removed. After reaching the lifting strength, the truss support beams are removed and the composite slab is transported to the yard or construction site; The truss support beams used in this step are only used to fix the position and elevation of the shear reinforcement brackets in the production of the composite slab, and do not bear the construction The load during the construction process is different from the specifications of the truss support beams for the on-site hoisting and pouring of the concrete superimposed layer, and their functions are different; Step 8: Prestressed composite slab installation A: Before installing the prestressed composite slab, install the truss support beam to the composite slab and fix it; then hoist the composite slab to the corresponding position according to the position requirements of the drawing, and place the two ends of the composite slab on the structural beams on both sides; B: After the composite slab is hoisted, tie the upper reinforcement of the composite slab; Step 9: Pour the second layer of laminated concrete After tying the upper reinforcement, pour the second layer of upper composite concrete. The height of concrete pouring is 2.5-3cm from the top of the shear reinforcement support. Step 10: Remove the truss support beams After pouring the upper concrete, finish the concrete surface. When the concrete reaches a certain strength, remove the truss support beam. When removing the truss support beam, first remove the pin plate. After removing the pin plate, remove the truss support beam and T-shaped connection part in turn. The pin plates, truss support beams and T-connectors are removed before the subsequent composite slabs can be used.

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