CN118148304A - Novel stereoscopic steel bar truss and manufacturing method - Google Patents
Novel stereoscopic steel bar truss and manufacturing method Download PDFInfo
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- CN118148304A CN118148304A CN202310977520.7A CN202310977520A CN118148304A CN 118148304 A CN118148304 A CN 118148304A CN 202310977520 A CN202310977520 A CN 202310977520A CN 118148304 A CN118148304 A CN 118148304A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 406
- 239000010959 steel Substances 0.000 title claims abstract description 406
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims abstract description 160
- 238000003491 array Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 35
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011178 precast concrete Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 124
- 238000010276 construction Methods 0.000 description 8
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
-
- 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
- E04C5/0636—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts
-
- 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
- E04C5/0636—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts
- E04C5/064—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts the reinforcing elements in each plane being formed by, or forming a, mat of longitunal and transverse bars
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a novel three-dimensional steel bar truss and a manufacturing method thereof. Comprises an upper chord steel bar layer, a lower chord steel bar layer and a web member steel bar layer; the upper chord steel bar layer and the lower chord steel bar layer respectively comprise an upper chord steel bar array and a lower chord steel bar array which are tightly laminated and vertically crossed; the web member reinforcement layer comprises web member reinforcement, and the upper chord reinforcement array and the lower chord reinforcement array are connected with the web member reinforcement at the overlapping position; each overlapping position between the chord steel bar arrays in the upper chord steel bar layer is connected with one overlapping position between the chord steel bar arrays in the adjacent lower chord steel bar layer through web member steel bars, so that a rectangular pyramid steel bar body structure formed by a plurality of web member steel bars serving as side edges is formed between the upper chord steel bar layer and the lower chord steel bar layer. The steel bar truss automatic processing device is convenient to manufacture, simple in structure and reliable in connection, and can well realize automatic processing of the steel bar truss.
Description
Technical Field
The invention belongs to the technical field of building structures, and particularly relates to a three-dimensional steel bar truss and a method for manufacturing the same, wherein continuous steel bars can be combined into a spatial steel bar truss, and a framework of a plate-type member with good stress performance is formed.
Background
In recent years, along with the continuous increase of steel output in China and the popularization of assembled buildings in China, the machining of the steel bar trusses has realized mechanical automation, and truss rod members are automatically cut, bent and automatically welded by automatic equipment. When the method is applied to the floor slab, the arrangement space of the reinforcing steel bars is uniform, the thickness of the concrete protective layer is uniform, the construction quality of the floor slab is improved, the field reinforcing steel bar binding engineering quantity is reduced, the construction progress can be accelerated, the construction safety guarantee is increased, and the civilized construction is realized.
Steel bar trusses are also widely used in other building components.
Most of the existing steel bar trusses are formed by combining an upper chord steel bar, two lower chord steel bars and two web member steel bars and are triangular trusses. The triangular truss has the advantages of forming a space stable structure and having the defects of large steel consumption of lower chord steel bars and web member steel bars; the formed member is one-way to bear vertical load, has limited bearing capacity and larger deformation, and is easy to generate larger difference with the deformation of the adjacent plate.
There are also a few applications of bi-directional steel trusses. The method comprises the steps of firstly processing a plane truss consisting of an upper chord steel bar, a lower chord steel bar and a web member steel bar into two groups with different heights, and then penetrating a plane truss with lower height between the web member and the chord member of a plane truss with higher height to form two bidirectional trusses which are perpendicular to each other to form a grid shape. The method has high precision requirements on trusses with different heights in two directions, has low processing efficiency when the planar trusses are assembled into the bidirectional trusses, is extremely unfavorable for welding working conditions of truss steel bars in the two directions, and is not an easy-to-realize mode.
Disclosure of Invention
In order to avoid the defect that the existing bidirectional steel bar truss is difficult to realize, the invention provides a novel stereoscopic steel bar truss, which is used for better solving the reliable realization of the bidirectional steel bar truss, is convenient for equipment to realize automatic high-efficiency processing, can obviously reduce the requirement on the processing precision of the truss, and improves the reliability of the connecting point of the spatial steel bar truss.
The technical scheme of the invention is as follows:
1. Novel three-dimensional steel bar truss:
The device comprises an upper chord steel bar layer, a lower chord steel bar layer and a web member steel bar layer, wherein the upper chord steel bar layer and the lower chord steel bar layer are respectively arranged above and below and are arranged in parallel and are arranged in two directions; the upper chord steel bar layer and the lower chord steel bar layer are respectively positioned above and below, and are connected into a whole through the web member steel bar layer.
The upper chord steel bar layer and the lower chord steel bar layer are respectively provided with an overlapping position of an upper steel bar and a lower steel bar, each overlapping position in the upper chord steel bar layer is connected with an overlapping position in the adjacent lower chord steel bar layer through a web member steel bar, namely, two ends of the web member steel bar are respectively connected with the overlapping position in the upper chord steel bar layer and the overlapping position in the lower chord steel bar layer, so that a rectangular pyramid steel bar body structure formed by a plurality of web member steel bars serving as side edges is formed between the upper chord steel bar layer and the lower chord steel bar layer.
Specifically, the upper chord steel bar layer/the lower chord steel bar layer is mainly formed by closely stacking upper and lower chord steel bar arrays which are mutually perpendicular and crossed, and the upper chord steel bar array and the lower chord steel bar array are welded;
The web member reinforcement layer mainly comprises a plurality of web member reinforcement bars which are not vertical or horizontal and incline, and the upper chord reinforcement bar array and the lower chord reinforcement bar array are connected with the web member reinforcement bars of the web member reinforcement layer at the overlapped part;
Each overlapping position of the upper and lower layers of string reinforcement arrays in the upper string reinforcement layer is fixedly connected with one overlapping position of the upper and lower layers of string reinforcement arrays in the adjacent lower string reinforcement layer through web member reinforcement, namely, two ends of the web member reinforcement are respectively connected to the overlapping position of the upper and lower layers of string reinforcement arrays in the upper string reinforcement layer and the overlapping position of the upper and lower layers of string reinforcement arrays in the lower string reinforcement layer.
Specifically, the upper chord steel bar layer/the lower chord steel bar layer are connected with four web member steel bars at each overlapping position, and one ends of the four different web member steel bars are connected to the overlapping position.
Each layer of string reinforcement array is mainly formed by arranging a plurality of string reinforcements in the same plane at equal intervals in parallel, and string reinforcements of the string reinforcement arrays on the upper layer and the lower layer are mutually perpendicular.
The chord steel bars of the upper chord steel bar array and the lower chord steel bar array in each upper chord steel bar layer/lower chord steel bar layer are orthogonally and vertically arranged, and are contacted and overlapped at the orthogonal and vertical crossing positions to form overlapped parts, and each overlapped part is welded. In the same chord steel bar layer, the chord steel bars of the upper chord steel bar array and the lower chord steel bar array are overlapped and connected in space.
Specifically, the rectangular pyramid reinforcement body is a rectangular pyramid reinforcement body with web member reinforcement as a side edge and chord reinforcement in an upper chord reinforcement layer/a lower chord reinforcement layer as a bottom edge.
The square pyramid reinforcement is divided into a right square pyramid reinforcement and an inverted square pyramid reinforcement, wherein the right square pyramid reinforcement is a square pyramid with a web member reinforcement as a side edge and a chord reinforcement in a lower chord reinforcement layer as a bottom edge, and the inverted square pyramid reinforcement is a square pyramid with a web member reinforcement as a side edge and a chord reinforcement in an upper chord reinforcement layer as a bottom edge.
Specifically, the upper chord reinforcement layer and the lower chord reinforcement layer are projected to the same plane parallel to the chord reinforcement array along the up-down direction, the centers of the four overlapping positions of the square four corners of the upper chord reinforcement layer are respectively provided with one overlapping position of the lower chord reinforcement layer, so to speak, each overlapping position of the lower chord reinforcement layer is positioned at the center of the four overlapping positions of the square four corners of the upper chord reinforcement layer, and simultaneously, the centers of the four overlapping positions of the square four corners of the lower chord reinforcement layer are respectively provided with one overlapping position of the upper chord reinforcement layer, so to speak, each overlapping position of the upper chord reinforcement layer is positioned at the center of the four overlapping positions of the square four corners of the lower chord reinforcement layer.
Specifically, each overlapping position in the upper chord reinforcement layer is respectively connected with four overlapping positions which are projected to the same plane along the up-down direction and are immediately adjacent in the lower chord reinforcement layer through four web member reinforcements, and the connection is specifically welding, so that a right rectangular pyramid reinforcement body is formed;
and each overlapping part in the lower chord steel bar layer is respectively connected with four overlapping parts which are projected to the same plane along the up-down direction and are immediately adjacent in the upper chord steel bar layer through four web member steel bars, and the connection is particularly welding, so that an inverted quadrangular pyramid steel bar body is formed.
In practical cases, the space between the upper chord reinforcement layer and the lower chord reinforcement layer is formed by continuously, tightly and alternately arranging and filling the right rectangular pyramid reinforcement body and the inverted rectangular pyramid reinforcement body along two mutually perpendicular and orthogonal directions at the same time, so that the finally formed three-dimensional reinforcement truss is in a complete three-dimensional reinforcement truss form along the two mutually perpendicular and orthogonal directions.
Under the structure, adjacent chord steel bars are reliably connected with each other, and four chord steel bars 1-4 with different heights are reliably connected with each other.
Specifically, four web bars connected to the same overlapping place and four string bars connected to the other ends of the four web bars form a rectangular pyramid reinforcement body together.
Specifically, the sections of the four web bars connected to the same overlapping position of the upper chord reinforcement layer and the four chord bars of the lower chord reinforcement layer connected to the other ends of the four web bars together form an upright rectangular pyramid reinforcement body, and the sections of the four web bars connected to the same overlapping position of the lower chord reinforcement layer and the four chord bars of the upper chord reinforcement layer connected to the other ends of the four web bars together form an inverted rectangular pyramid reinforcement body.
Specifically, the chord steel bars in the chord steel bar array of the upper chord steel bar layer/the lower chord steel bar layer are all complete steel bars along the length direction of the chord steel bars.
Specifically, the chord steel bars in the chord steel bar array of the upper chord steel bar layer/the lower chord steel bar layer are formed by combining and connecting single steel bars or multiple steel bars along the same straight line.
Each web member bar is a single, independent, straight bar. The plurality of web member steel bars along the same direction are formed by end-to-end welding, so that continuous members are formed, welding is generated between the two ends of each web member steel bar and chord member steel bars, namely, the web member steel bars and the chord member steel bars are more in connection points, and the connection structure is more reliable.
Specifically, the upper chord reinforcement layer and the lower chord reinforcement layer are respectively arranged at different heights, so that staggered arrangement with a certain interval is formed on a vertical projection surface.
Specifically, in the upper chord reinforcement layer/the lower chord reinforcement layer, the chord reinforcement arrays of the upper layer and the lower layer can be interchanged and can be mutually interchanged in position.
Specifically, the web member reinforcement bars can be connected to the chord reinforcement bars of the upper chord reinforcement bar array or the chord reinforcement bars of the lower chord reinforcement bar array in the upper chord reinforcement bar layer/the lower chord reinforcement bar layer, or can be connected to the welding points of the overlapping parts in the case that the chord reinforcement bars of the upper chord reinforcement bar array and the lower chord reinforcement bar array are welded at the overlapping parts.
Specifically, the chord steel bars in the upper chord steel bar layer/lower chord steel bar layer upper and lower chord steel bar arrays are formed by arranging two or more straight steel bars in parallel, and the straight steel bars are not welded.
The invention can be applied to the plate-type components such as building floors, stairs, protruding windows and the like, in combination with cast-in-place concrete, factory precast concrete, preassembled templates and the like, and can be applied to the plate-type components such as light roofs, floors, wall surfaces and the like which are not cast with concrete as a bearing framework.
2. The manufacturing method of the novel three-dimensional steel bar truss comprises the following steps:
Arranging an upper chord steel bar and two lower chord steel bars in parallel, wherein the two lower chord steel bars are positioned on two sides below the upper chord steel bar, respectively welding and connecting a plurality of web member steel bars which are sequentially connected end to end along the direction of the steel bars through a main body between the upper chord steel bar and the two lower chord steel bars by fold lines to form a single steel bar truss unit which is a horizontal triangular column, and arranging a plurality of steel bar truss units which are the horizontal triangular columns in a close manner in the same direction; namely, each lower chord steel bar of every two adjacent steel bar trusses is arranged in parallel and closely.
Then arranging a plurality of chord steel bars perpendicular to the upper chord steel bars on the top surface of the upper chord steel bars of the steel bar truss unit at a certain interval, and welding each chord steel bar with the upper chord steel bars, wherein the welding position is also a welding position between the upper end parts of the web members and the upper chord steel bars, and simultaneously, each welding position between the upper end parts of the web members and the upper chord steel bars is provided with a chord steel bar positioned on the top surface of the upper chord steel bars and the upper chord steel bars for welding connection;
Setting a plurality of chord steel bars perpendicular to the lower chord steel bars on the bottom surface of the lower chord steel bars of the steel bar truss unit at a certain interval, and welding each chord steel bar with the lower chord steel bars, wherein the welding position is also a welding position between the lower end parts of the web members and the lower chord steel bars, and simultaneously, each welding position between the lower end parts of the web members and the lower chord steel bars is provided with a chord steel bar positioned on the bottom surface of the lower chord steel bars and the lower chord steel bars for welding connection; and finally, forming the complete three-dimensional steel bar truss.
The chord steel bars of the chord steel bar array positioned at the lower layer in the upper chord steel bar layer and the chord steel bars of the chord steel bar array positioned at the upper layer in the lower chord steel bar layer can be composed of two steel bars which are arranged in parallel and close to each other in a fixed mode.
According to the manufacturing method, the web member steel bars are welded with the layer of string steel bar arrays closer to the middle of the upper string steel bar layer and the lower string steel bar layer, so that the upper string steel bars, the lower string steel bars and the continuous web member steel bars can be processed and manufactured to form a truss with a triangular section, the straightness of the string steel bars, the distance control between the string steel bars and the web member steel bars can be ensured, the web member steel bars can be continuous steel bars, the processing difficulty is reduced, the automatic processing is easy to realize, the processing efficiency is easy to ensure, and the problems that the web member steel bars are difficult to fix in shape are solved.
The steel bar truss unit of the horizontal triangular column is manufactured firstly, then, one layer of string steel bar array which is farther from the middle in the upper string steel bar layer and the lower string steel bar layer is additionally welded, so that the section stability, straightness and rigidity of the steel bar truss unit of the triangular column can be fully utilized, when one layer of string steel bar array which is farther from the middle is additionally arranged, the steel bar truss unit of the triangular column which is arranged is used as a reliable reference surface, the arrangement, fixing and connection of the one layer of string steel bar array are easier to realize, the whole three-dimensional truss is firmer, the stress performance is better, and the stability of the shape and the structure can be improved.
In addition, the structure of the invention splits each original chord steel bar of the chord steel bar array positioned at the lower layer in the lower chord steel bar layer into two chord steel bars, thus being convenient for processing into a steel bar truss unit of a required horizontal triangular column, and ensuring the shape.
The beneficial effects of the invention are as follows:
1. the method is simple, and ensures the technical principle of the steel bar assembly into the solid steel bar truss;
2. the invention reduces the machining precision requirement of the steel bar truss and reduces the difficulty of assembling the steel bars into the steel bar truss.
3. The invention is convenient to process by mechanical equipment, improves the production efficiency and improves the reliability of the product connection nodes.
The invention solves the technical problem that continuous wires are combined to form the bearing framework of the plate-type member on the basis of not cutting into a plurality of sections by adopting a construction innovation arrangement, and adopts a construction form that small-size parts are firstly processed and then assembled into larger sizes, thereby providing a solution for automatic processing.
The construction mode and the manufacturing method can ensure the stress performance of the plate-type component to the greatest extent, and simultaneously consider the quality and the efficiency of automatic processing.
Drawings
Fig. 1 is a schematic view of a stereoscopic rebar truss;
fig. 2 is a schematic view of a transverse cross section of a composite stereoscopic steel bar truss;
fig. 3 is a schematic view of a longitudinal section of a composite stereoscopic steel bar truss;
fig. 4 is an elevation view of a single truss unit constituting a stereoscopic steel bar truss;
fig. 5 is a cross-sectional view of a single truss unit constituting a stereoscopic steel bar truss.
Fig. 6 is a perspective bar truss embodiment;
Fig. 7 is a flow chart of a method of making the present invention.
In the figure: 1-winding steel bars; 2-winding steel bars; 3-lower chord steel bars; 4-lower chord steel bars; 5-web member reinforcement.
Detailed description of the preferred embodiments
The invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
The concrete implementation is that, as shown in fig. 1, the lower chord reinforcement layer comprises an upper chord reinforcement layer positioned above the lower chord reinforcement layer, a web member reinforcement layer positioned in the middle and a lower chord reinforcement layer positioned below the upper chord reinforcement layer, wherein the web member reinforcement layer is connected between the upper chord reinforcement layer and the lower chord reinforcement layer.
The upper chord reinforcement layer comprises an upper chord reinforcement array formed by arranging upper chord reinforcements 2 in the first direction at equal intervals along the second direction and a lower chord reinforcement array formed by arranging upper chord reinforcements 1 in the second direction at equal intervals along the first direction, wherein the two directions of the first direction and the second direction are mutually perpendicular, and the upper chord reinforcements 1 and the upper chord reinforcements 2 are orthogonally and vertically arranged; each upper chord steel bar 2 is positioned above all upper chord steel bars 1 and in one-to-one contact connection, meanwhile, each upper chord steel bar 1 is positioned below all upper chord steel bars 2 and in one-to-one contact connection, and the contact connection position between the upper chord steel bars 1 and the upper chord steel bars 2 is an overlapping position and is welded at the overlapping position.
Likewise, the lower chord reinforcement layer comprises an upper chord reinforcement array formed by equally arranging lower chord reinforcement 3 in a first direction along a second direction and a lower chord reinforcement array formed by equally arranging lower chord reinforcement 4 in a second direction along the first direction, wherein the two directions of the first direction and the second direction are perpendicular to each other, and the lower chord reinforcement 3 and the lower chord reinforcement 4 are orthogonally and vertically arranged; each lower chord steel bar 3 is positioned above all upper chord steel bars 4 and in one-to-one contact connection, each lower chord steel bar 4 is positioned below all upper chord steel bars 3 and in one-to-one contact connection, and the contact connection position of the lower chord steel bars 3 and the lower chord steel bars 4 is an overlapping position and is welded at the overlapping position.
The upper chord reinforcement 1 and the lower chord reinforcement 3 are parallel and the upper chord reinforcement 2 and the lower chord reinforcement 4 are parallel.
The web member reinforcement layer includes a plurality of web member reinforcement bars 5.
Each overlap between the upper chord rebar 1 and the upper chord rebar 2 is welded via an overlap between one web rebar 5 and the lower chord rebar 3 and the lower chord rebar 4.
Specifically, the upper ends of the web bars 5 are welded to the overlapping portions between the upper chord steel bars 1 and the upper chord steel bars 2, and the upper ends of the web bars 5 are welded to the upper chord steel bars 1 below the overlapping portions. Likewise, the lower ends of the web bars 5 are welded to the overlapping portions between the lower chord steel bars 3 and the lower chord steel bars 4, and the lower ends of the web bars 5 are welded to the lower chord steel bars 3 above the overlapping portions.
The upper chord steel bar layer and the lower chord steel bar layer are projected to the same plane along the up-down direction, the upper chord steel bar 1 and the upper chord steel bar 2 in the upper chord steel bar layer are mutually orthogonal to form an upper steel bar grid, the lower chord steel bar 3 and the lower chord steel bar 4 in the lower chord steel bar layer are mutually orthogonal to form a lower steel bar grid,
The upper steel bar grids and the lower steel bar grids are identical in shape and size, and the single grids are square grids, but are arranged in a staggered mode by projection on the same plane, so that each cross point of the upper steel bar grids is located at the center of one grid of the lower steel bar grids, each cross point of the lower steel bar grids is located at the center of one grid of the upper steel bar grids, and each cross point of the upper steel bar grids is located at the center of one cross point of the lower steel bar grids. Wherein the intersection corresponds to the projection position at the overlap.
Four web bars are connected to the overlapping place between the upper chord steel bar 1 and the upper chord steel bar 2 in the three-dimensional space represented by each crossing point of the upper steel bar mesh, and one ends of the four different web bars are connected to the overlapping place. At the same time, four web bars are connected to the overlapping position between the lower chord steel bars 3 and the lower chord steel bars 4 in the three-dimensional space represented by each intersection point of the lower steel bar grid, and one ends of the four different web bars are connected to the overlapping position.
More specifically, one intersection of the upper reinforcing mesh corresponds to one overlapping place between the upper chord reinforcing bar 1 and the upper chord reinforcing bar 2 in the three-dimensional space, which is the upper overlapping place; the grid four corner points of the grid center of the lower steel bar grid where one intersection point of the upper steel bar grid is located correspond to four overlapping positions between the lower chord steel bars 3 and the lower chord steel bars 4 in the three-dimensional space, and are lower overlapping positions. The upper overlapped part is respectively connected with the four lower overlapped parts through four web member steel bars 5, the four web member steel bars 5 and a section where two lower chord steel bars 3 and two lower chord steel bars 4 connected with the lower ends of the four web member steel bars 5 are located together form a right square pyramid steel bar body, and the four web member steel bars 5 are four side edges of four sides of the right square pyramid steel bar body.
On the contrary, the lower overlapped part is respectively connected with the four upper overlapped parts through four web member steel bars 5, the inverted rectangular pyramid steel bar body is formed by the four web member steel bars 5 and two upper chord steel bars 1 connected with the lower ends of the four web member steel bars 5 and the section where the two upper chord steel bars 2 are located together, and the four web member steel bars 5 are four side edges of the four sides of the inverted rectangular pyramid steel bar body.
Finally, as shown in fig. 1, the three-dimensional steel bar truss is formed by arranging two layers of string steel bar layers in two directions at a certain interval in a crossed mode to form a grid shape, wherein the upper layer of string steel bar layer and the lower layer of string steel bar layer are connected by adopting web member steel bars, a space formed by filling a plurality of rectangular pyramid steel bar structures formed by taking web member steel bars as side edges is formed between the upper layer of string steel bar layer and the lower layer of string steel bar layer, the upright rectangular pyramid steel bar body and the inverted rectangular pyramid steel bar body are simultaneously and continuously and tightly arranged in an alternating mode along two mutually perpendicular and orthogonal directions to be filled, and string steel bars 1-4 with four different heights are reliably connected with each other.
As shown in fig. 2, a cross-sectional interface view of one direction of the stereoscopic steel bar truss; as shown in fig. 3, a cross-sectional interface view of another direction of the stereoscopic steel bar truss.
The string steel bars in the upper string steel bar array and the lower string steel bar array of the upper string steel bar layer/the lower string steel bar layer are formed by parallel arrangement of two linear steel bars, and no welding is performed between the two linear steel bars.
Example 2
The difference from example 1 is that each of the one-string reinforcement arrays of the upper-string reinforcement layer and the lower-string reinforcement layer by the web member reinforcement layer is formed with two string reinforcements arranged in parallel next to each other. Specifically, each of the lower chord rebar arrays in the upper chord rebar layer and/or each of the upper chord rebar arrays in the lower chord rebar layer is formed with two chord rebar arranged in parallel next to each other, rather than a single rebar.
And the two chord steel bars are arranged in parallel and closely, and are welded only at the overlapped part.
As shown in fig. 7, the construction and installation process of the present embodiment is as follows:
As shown in fig. 4 and 5, an upper chord steel bar and two lower chord steel bars are arranged in parallel, the two lower chord steel bars are positioned at two sides below the upper chord steel bar, and a plurality of web member steel bars which are sequentially connected end to end along the direction of the steel bars through a main body between the upper chord steel bar and the two lower chord steel bars by folding lines are connected into a single steel bar truss unit which is a horizontal triangular column;
As shown in fig. 6, a plurality of such steel bar truss units are arranged next to each other in the same direction, that is, a structure composed of a lower chord steel bar array of an upper chord steel bar layer, a web member steel bar layer, and an upper chord steel bar array of a lower chord steel bar layer is formed, that is, each lower chord steel bar of every two adjacent steel bar trusses is arranged in parallel and close to each other.
Then, arranging a plurality of chord steel bars perpendicular to the upper chord steel bars on the top surface of the upper chord steel bar of the stereoscopic triangular steel bar truss at a certain interval, connecting and welding each chord steel bar with the upper chord steel bar, wherein the welding position is also a welding position between the upper end part of the web member steel bar and the upper chord steel bar, and simultaneously, each welding position between the upper end part of the web member steel bar and the upper chord steel bar is provided with a chord steel bar positioned on the top surface of the upper chord steel bar and the upper chord steel bar for welding connection;
Then, arranging a plurality of chord steel bars perpendicular to the lower chord steel bars on the top surface of the lower chord steel bar of the stereoscopic triangular steel bar truss at a certain interval, connecting and welding each chord steel bar with the lower chord steel bar, wherein the welding position is also the welding position between the lower end part of the web member steel bar and the lower chord steel bar, and simultaneously, each welding position between the lower end part of the web member steel bar and the lower chord steel bar is provided with a chord steel bar positioned on the bottom surface of the lower chord steel bar and the lower chord steel bar for welding connection;
And finally, forming the complete three-dimensional steel bar truss.
Therefore, the steel bar truss automatic processing device is convenient to manufacture, simple in structure, reliable in connection and capable of well realizing automatic processing of the steel bar truss.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, and the scope of protection of the present invention and equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.
Claims (17)
1. The utility model provides a novel three-dimensional steel bar truss which characterized in that:
the web member reinforcement layer comprises an upper chord reinforcement layer, a lower chord reinforcement layer and a web member reinforcement layer, wherein the upper chord reinforcement layer and the lower chord reinforcement layer are respectively arranged above and below;
The upper chord steel bar layer and the lower chord steel bar layer are respectively provided with an overlapping position of an upper steel bar and a lower steel bar, and each overlapping position of the upper chord steel bar layer is connected with one overlapping position of the adjacent lower chord steel bar layer through web member steel bars, so that a rectangular pyramid steel bar body structure formed by a plurality of web member steel bars serving as side edges is formed between the upper chord steel bar layer and the lower chord steel bar layer.
2. The novel stereoscopic steel bar truss according to claim 1, wherein:
The upper chord steel bar layer/the lower chord steel bar layer are formed by closely laminating upper and lower chord steel bar arrays which are vertically crossed;
the web member reinforcement layer mainly comprises a plurality of inclined web member reinforcements, and the upper chord reinforcement array and the lower chord reinforcement array are connected with the web member reinforcements of the web member reinforcement layer at the overlapped part;
Each overlapping position of the upper and lower layers of string reinforcement arrays in the upper string reinforcement layer is connected with an overlapping position of the upper and lower layers of string reinforcement arrays in the adjacent lower string reinforcement layer through web member reinforcement.
3. A novel stereoscopic rebar truss according to claim 1 or 2, wherein:
the upper chord steel bar layer/the lower chord steel bar layer are connected with four web member steel bars at each overlapping position.
4. A novel stereoscopic rebar truss according to claim 1 or 2, wherein:
each layer of chord steel bar array is mainly formed by arranging a plurality of chord steel bars in parallel and at equal intervals on the same plane.
5. The novel stereoscopic steel bar truss according to claim 4, wherein:
the chord reinforcements of the upper chord reinforcement bar array and the lower chord reinforcement bar array in each upper chord reinforcement bar layer/lower chord reinforcement bar layer are orthogonally and vertically arranged, and are contacted and overlapped at the orthogonal and vertical crossing position to form an overlapped part.
6. The novel stereoscopic steel bar truss according to claim 5, wherein:
The rectangular pyramid reinforcement body is a rectangular pyramid reinforcement body with web member reinforcement as a side edge and chord reinforcement in the upper chord reinforcement layer/the lower chord reinforcement layer as a bottom edge.
7. The novel stereoscopic steel bar truss according to claim 5, wherein:
The upper chord reinforcement layer and the lower chord reinforcement layer are projected to the same plane along the up-down direction, the centers of the four overlapping positions of the four square corners of the upper chord reinforcement layer are respectively provided with one overlapping position of the lower chord reinforcement layer, and the centers of the four overlapping positions of the four square corners of the lower chord reinforcement layer are respectively provided with one overlapping position of the upper chord reinforcement layer.
8. A novel stereoscopic rebar truss according to claim 5 or 6, wherein:
Each overlapping position in the upper chord steel bar layer is respectively connected with four overlapping positions which are projected to the same plane along the up-down direction and are immediately adjacent in the lower chord steel bar layer through four web member steel bars to form a right square pyramid steel bar body;
And each overlapping part in the lower chord steel bar layer is respectively connected with four overlapping parts which are projected to the same plane along the up-down direction and are immediately adjacent in the upper chord steel bar layer through four web member steel bars, so that an inverted rectangular pyramid steel bar body is formed.
9. The novel stereoscopic rebar truss of claim 8, wherein:
four web bars connected to the same overlapping place and four string bars connected to the other ends of the four web bars form a rectangular pyramid reinforcement body together.
10. The novel stereoscopic steel bar truss according to claim 1, wherein:
The chord steel bars in the upper chord steel bar layer/the lower chord steel bar layer are all complete steel bars along the length direction of the upper chord steel bar layer/the lower chord steel bar layer.
11. The novel stereoscopic steel bar truss according to claim 1, wherein:
The chord steel bars in the upper chord steel bar layer/the lower chord steel bar layer are formed by combining and connecting single steel bars or a plurality of steel bars.
12. The novel stereoscopic steel bar truss according to claim 1, wherein:
the upper chord steel bar layer and the lower chord steel bar layer are respectively provided with an upper chord steel bar array and a lower chord steel bar array, and the upper chord steel bar layer and the lower chord steel bar array are respectively arranged at different heights.
13. The novel stereoscopic steel bar truss according to claim 1, wherein:
the chord steel bar arrays of the upper layer and the lower layer can be exchanged.
14. The novel stereoscopic steel bar truss according to claim 1, wherein:
the web member reinforcement is connected to the chord reinforcement of the upper chord reinforcement array or the chord reinforcement of the lower chord reinforcement array.
15. The novel stereoscopic steel bar truss according to claim 1, wherein:
the chord steel bars in the upper chord steel bar layer/the lower chord steel bar layer are formed by arranging two or more straight steel bars in parallel.
16. The use of the novel stereoscopic rebar truss of any one of claims 1-15, wherein: the composite slab is applied to slab components such as building floors, stairs, protruding windows and the like, and is combined with cast-in-place concrete, factory precast concrete, preassembled templates and the like, and is applied to slab components such as light roofs, floors, wall surfaces and the like which are not cast with concrete as a bearing framework.
17. The method for manufacturing the novel three-dimensional steel bar truss applied to any one of claims 1 to 15 is characterized in that:
Arranging an upper chord steel bar and two lower chord steel bars in parallel, wherein the two lower chord steel bars are positioned on two sides below the upper chord steel bar, welding and connecting the upper chord steel bar and the two lower chord steel bars into a single steel bar truss unit through a plurality of web member steel bars which are sequentially connected end to end along the steel bar direction by fold lines, and arranging the plurality of steel bar truss units in a close manner in the same direction;
Then, arranging a plurality of string reinforcing steel bars perpendicular to the upper string reinforcing steel bars on the top surface of the upper string reinforcing steel bars of the steel bar truss unit at equal intervals, and welding each string reinforcing steel bar with the upper string reinforcing steel bars, wherein the welding position is also the welding position between the upper end parts of the web member reinforcing steel bars and the upper string reinforcing steel bars;
Setting a plurality of chord steel bars perpendicular to the lower chord steel bars on the bottom surface of the lower chord steel bars of the steel bar truss unit at equal intervals, and welding each chord steel bar with the lower chord steel bars, wherein the welding position is also the welding position between the lower end parts of the web member steel bars and the lower chord steel bars; and finally, forming the complete three-dimensional steel bar truss.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310977520.7A CN118148304A (en) | 2023-08-04 | 2023-08-04 | Novel stereoscopic steel bar truss and manufacturing method |
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| CN202310977520.7A CN118148304A (en) | 2023-08-04 | 2023-08-04 | Novel stereoscopic steel bar truss and manufacturing method |
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