Lower hanging type steel structure of double-layer upright quadrangular pyramid net rack and construction method

Abstract

The invention relates to a lower hanging type steel structure of a double-layer upright quadrangular pyramid net rack and a construction method. The construction method comprises the following steps that firstly, an embedded part is constructed; step 2, assembling a jig frame of the lower hanging structure unit; step 3, processing a lower hanging structure unit; step 4, setting bracket installation; and fifthly, the lower hanging structure unit is hoisted. The design of the double-layer upright quadrangular pyramid net rack is adopted, the stability and the bearing capacity of the structure are improved, and the double-layer upright quadrangular pyramid net rack can adapt to large-span, heavy-load and other complex engineering conditions; through innovation of technologies such as column side bracket installation, lower hanging structure unit jig frame machining, adjustable support installation and electric hoist lifting installation, standardized and modularized production of the structure unit is achieved in a narrow space, the construction efficiency and quality are improved, the construction difficulty and danger are reduced, and the construction cost is reduced. And good technical economic and social benefits can be obtained when the method is applied to practical engineering.

Description

Technical Field

[0001] The invention relates to a double-layer upright tetrahedral grid hanging type steel structure, in particular to a double-layer upright tetrahedral grid hanging type steel structure and a construction method. Background Art

[0002] With the continuous development of my country's construction industry, space steel grid structures have been widely used in my country's construction projects. While people pursue practicality, they are also constantly seeking beautiful and unique shapes for buildings, and space steel grids provide convenience in this regard. Large-span steel structures are increasingly used in real life, such as large gymnasiums, theaters, etc. However, in the construction of double-layer upright tetrahedral grid hanging steel structures, it is necessary to solve the problem of realizing standardized and modular production of structural units in a small space, ensuring its hoisting efficiency and installation quality, and reducing the difficulty and danger of construction.

[0003] To sum up, for the construction of double-layer upright tetrahedral grid hanging steel structure, it is very important to seek a double-layer upright tetrahedral grid hanging steel structure with fast construction speed, simple operation, high reliable construction quality and its construction method. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a double-layer upright quadrangular pyramid grid hanging steel structure and a construction method.

[0005] In order to achieve the above technical purpose, the present invention adopts the following technical solution: a construction method of a double-layer upright tetrahedral grid hanging steel structure, the construction steps are as follows:

[0006] Step 1: Embedded parts construction: During the construction of concrete columns, the integrated embedded parts and embedded steel sleeves are embedded simultaneously;

[0007] Step 2: Assembling the lower hanging structural unit frame;

[0008] Step 3: Processing the lower hanging structural unit;

[0009] Step 4: Installation of the shaped corbel: Make a shaped corbel, set a mounting hole and a reserved groove on the shaped corbel; align the reserved groove on the shaped corbel with the integrated embedded part, and insert the integrated embedded part into the reserved groove on the shaped corbel, position and fix the shaped corbel through the clamping plate on the integrated embedded part, and then install a threaded fixing rod at the mounting hole position of the shaped corbel, and the threaded fixing rod passes through the mounting hole on the shaped corbel and is connected to the embedded steel sleeve; install a crossbeam between the shaped corbels;

[0010] Step 5, hoisting of the lower hanging structural unit: install the first operating platform, the first guardrail, and the bottom plate on the top of the first square steel bracket; set the first reserved hole on the first operating platform and weld the reinforcement sleeve in the first reserved hole; weld and fix the small vertical pole to the first operating platform, set the cross bar on the upper end of the small vertical pole, and set the second reserved hole on the cross bar and the anti-shift card plate; set the anti-shift card plate on the upper and lower sides of the cross bar, and then install the vertical pole; when installing the vertical pole, first align the second reserved hole on the anti-shift card plate with the second reserved hole on the cross bar, pass the vertical pole through the cross bar and the second reserved hole on the anti-shift card plate and the reinforcement sleeve, and the lower end of the vertical pole is connected to the bottom plate; then weld the two anti-shift card plates to the vertical pole; install the boom on the vertical pole, install the lifting lug and the electric hoist on the lower side of the boom end, and connect the wire rope to the electric hoist;

[0011] At the same time, the adjustable bracket of the hanging structure unit is installed; the adjustable bracket of the hanging structure unit is composed of a bracket base, a lifting bracket, and a shelving support rod; a second operating platform and a second guardrail are set on the top of the second square steel bracket, and the adjustable bracket of the hanging structure unit is installed on the second operating platform on the top of the second square steel bracket;

[0012] The electric hoist hoists the lower hanging structure unit through the steel wire rope and places it on the supporting rod on the adjustable bracket of the lower hanging structure unit. The height of the lower hanging structure unit is adjusted through the adjustable bracket of the lower hanging structure unit and the lower hanging structure unit is installed. The lower hanging structure units are connected to each other to form a complete lower hanging structure. H-shaped steel hanging columns are installed between the lower hanging structure and the lower chord ball of the tetrahedral grid roof, and the lower hanging structure is connected to the beam.

[0013] Preferably, in step 2, the lower hanging structural unit tire frame includes a first enlarged base, embedded anchor rods, longitudinal beams, cross beams, vertical beams, first ear plates, U-shaped positioning plates, pull-out and plug-in detachable fixing sets, plugs, U-shaped card slots, and U-shaped end caps. The enlarged base is fixed to the concrete floor by embedded anchor rods. The longitudinal beams are installed between the first enlarged bases, and the first ear plates are arranged at the bottom of the vertical beams. The first ear plates are fixed to the first enlarged base by bolts. The vertical beams are installed on the first enlarged base, and the tops of the vertical beams are provided with embedded grooves and fixing holes. The pull-out and plug-in detachable fixing sets include two symmetrically arranged A U-shaped card slot is arranged, and U-shaped end heads are symmetrically arranged on both sides of each U-shaped card slot, and a second fixing hole is arranged on the U-shaped end head, and the U-shaped end heads on the two U-shaped card slots are correspondingly buckled to form a plug; the plug-in and separate fixing set is installed between the tops of the two vertical beams, and the plugs at both ends of the plug-in and separate fixing set are inserted into the embedded grooves and fixed by pins; after the plug-in and separate fixing set is installed, a square space is formed between the two U-shaped card slots on the plug-in and separate fixing set; a U-shaped positioning plate is installed below the square space, and the U-shaped positioning plate is welded to the crossbeam.

[0014] Preferably, in step three, the specific method of hanging the structural unit is as follows: insert the column into the square space, support the lower part of the column on the U-shaped positioning plate, and after the four columns are fixed, weld the other components of the hanging structural unit; after the processing of the hanging structural unit is completed, pull out the pin used to fix the pull-out and separate fixing set, remove the pull-out and separate fixing set, and then hoist the hanging structural unit as a whole.

[0015] Preferably, the standardized corbel is made of steel plate, and the integrated embedded part is made of threaded steel. A clamping plate and a first anti-falling steel plate are respectively provided at both ends of the integrated embedded part, and an embedded dividing line is provided on the integrated embedded part; the distance from the embedded dividing line to the clamping plate is the steel plate thickness of the standardized corbel; and a second anti-falling steel plate is provided on the embedded steel sleeve.

[0016] Preferably, the bottom of the first square steel bracket is fixedly connected to the second enlarged base, and a second ear plate is provided at the bottom of the first square steel bracket, and the second ear plate is fastened to the second enlarged base by bolts.

[0017] Preferably, in step five, the bottom of the second square steel bracket is fixed to the third enlarged base; a third ear plate is provided at the bottom of the second square steel bracket, and the third ear plate is fastened to the third enlarged base by bolts.

[0018] The double-layer upright tetrahedral grid hanging steel structure is constructed by the construction method of the double-layer upright tetrahedral grid hanging steel structure.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention adopts a double-layer upright tetrahedral grid design to increase the stability and bearing capacity of the structure, so that it can adapt to complex engineering conditions such as large span and heavy load.

[0021] 2. The present invention adopts the application of the processing technology of the under-hanging structural unit frame, realizes the standardized and modular production of the structural unit, and improves the construction efficiency and quality.

[0022] 3. The present invention adopts the installation technology of the adjustable bracket of the hanging structural unit, so that the structural unit can be positioned quickly and accurately during the installation process, reducing construction errors and improving construction accuracy.

[0023] 4. The present invention adopts electric hoist lifting and installation technology, which reduces the risk of high-altitude operations and improves construction safety; the electric hoist is used to lift and install the structural unit, which reduces manual operation and reduces the difficulty and danger of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the cross section of a double-layer upright tetrahedral grid hanging steel structure;

[0025] Figure 2 This is a schematic diagram of the large sample of the tetrahedral grid roof;

[0026] Figure 3 This is a schematic diagram of a tire frame for processing a lower hanging structural unit;

[0027] Figure 4 It is the intention of the large sample of the plug-in and pull-out separate fixed set;

[0028] Figure 5 This is a schematic diagram of a half-width separate fixing set;

[0029] Figure 6 This is a schematic diagram of the installation of a standardized corbel;

[0030] Figure 7 It is a cross-sectional diagram of the standardized corbel installation;

[0031] Figure 8 It is a schematic diagram of the integrated embedded parts;

[0032] Fig. 9 This is a schematic diagram of the electric hoist lifting installation system;

[0033] Fig.10 This is a schematic diagram of the fixed end of the vertical rod;

[0034] Fig.11 It is a schematic diagram of the adjustable bracket of the lower hanging structural unit.

[0035] In the figure: 1-concrete column, 2-shaped corbel, 3-steel beam, 4-hanging structure, 5-fixed ball hinge support, 6-tetragonal pyramid grid roof, 7-upper chord ball, 8-lower chord ball, 9-diagonal web bar, 10-lower chord bar, 11-H-shaped steel hanging column, 12-upper chord bar, 13-first enlarged base, 14-embedded anchor rod, 15-longitudinal beam, 16-cross beam, 17-vertical beam, 18-first ear plate, 19-U-shaped positioning plate, 20-embedded groove, 21-first fixing hole, 22-plug-in separate fixing set, 23-plug, 24-U-shaped card slot, 25-U-shaped end, 26-threaded fixing rod, 27-reserved slot, 28-card plate, 29-integrated embedded parts, 30-embedded steel sleeve, 31-anti-falling steel plate, 32-embedded dividing line, 33-first square steel bracket, 34-bottom plate, 35-vertical rod, 36-first operating platform, 37-reinforcement sleeve, 38-small vertical rod, 39-cross rod, 40-anti-shifting card plate, 41-vertical rod, 42-hanging arm, 43-diagonal support rod, 44-first guardrail, 45-lifting ear, 46-electric hoist, 47-wire rope, 48-underhanging structural unit, 49-column, 50-support frame base, 51-liftable support frame, 52-placed support rod, 53-second fixing hole, 54-second anti-falling steel plate, 55-second enlarged base, 56-second ear plate, 57-second square steel bracket, 58-third enlarged base, 59-third ear plate, 60-second operating platform, 61-second guardrail. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the embodiments, wherein the traditional construction methods such as concrete frame construction, component processing, component connection, bolt fixing, etc. are not described in detail. The description of the following embodiments is only used to help understand the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0037] Figure 1 It is a schematic diagram of the cross section of a double-layer upright tetrahedral grid hanging steel structure; Figure 2 This is a schematic diagram of the large sample of the tetrahedral grid roof; Figure 3 This is a schematic diagram of a tire frame for processing a lower hanging structural unit; Figure 4 It is the intention of the large sample of the plug-in and pull-out separate fixed set; Figure 5 This is a schematic diagram of a half-width separate fixing set; Figure 6 This is a schematic diagram of the installation of a standardized corbel; Figure 7 It is a cross-sectional diagram of the standardized corbel installation; Figure 8 It is a schematic diagram of the integrated embedded parts; Fig. 9 This is a schematic diagram of the electric hoist lifting installation system; Fig.10 This is a schematic diagram of the fixed end of the vertical rod; Fig.11 It is a schematic diagram of the adjustable bracket of the lower hanging structural unit.

[0038] As shown in the figures, the double-layer upright tetrahedral grid hanging steel structure includes a concrete column 1, a shaped corbel 2, a steel beam 3, a hanging structure 4, a fixed ball hinge support 5, a tetrahedral grid roof 6, an upper chord ball 7, a lower chord ball 8, an oblique web bar 9, a lower chord bar 10, an H-shaped steel hanging column 11, an upper chord bar 12, a first enlarged base 13, an embedded anchor rod 14, a longitudinal beam 15, a cross beam 16, a vertical beam 17, a first ear plate 18, a U-shaped positioning plate 19, an embedded groove 20, a pull-in and pull-out separation fixing set 22, a plug 23, a U-shaped card slot 24, a U-shaped end 25, a threaded fixing rod 26, a reserved groove 27, a card plate 28, an integrated embedded part 29, an embedded steel sleeve 30, an anti- Falling steel plate 31, embedded dividing line 32, first square steel bracket 33, bottom plate 34, vertical rod 35, operating platform 36, reinforcement sleeve 37, small vertical rod 38, cross rod 39, anti-shifting card plate 40, vertical rod 41, hanging arm 42, diagonal support rod 43, second guardrail 44, lifting ear 45, electric hoist 46, wire rope 47, hanging structure unit 48, column 49, support frame base 50, liftable support frame 51, shelf support rod 52, second fixing hole 53, second anti-falling steel plate 54, second enlarged base 55, second ear plate 56, second square steel bracket 57, third enlarged base 58, third ear plate 59, second operating platform 60, second guardrail 61.

[0039] The tetrahedral grid roof 6 includes an upper chord ball 7, a lower chord ball 8, a diagonal web member 9, a lower chord member 10, and an upper chord member 12; the upper chord member 12 is arranged between adjacent upper chord balls 7, and the diagonal web member 9 is arranged between the upper chord ball 7 and the lower chord ball 8; the tetrahedral grid roof 6 is connected to the concrete column 1 through a fixed ball hinge support 5; the lower hanging structure 4 is connected to the lower chord ball 8 and the shaped corbel 2 arranged on the concrete column 1 through an H-shaped steel hanging column 11 and a steel beam 3, respectively, and the two ends of the steel beam 3 are placed on the shaped corbel 2 on the concrete column 1; the lower hanging structure 4 is assembled from a plurality of lower hanging structure units 48.

[0040] The lower hanging structure unit 48 is processed with the help of the lower hanging structure unit frame. The lower hanging structure unit frame includes a first enlarged base 13, embedded anchor rods 14, longitudinal beams 15, cross beams 16, vertical beams 17, first ear plates 18, U-shaped positioning plates 19, plug-in and pull-out separation fixing sets 22, plugs 23, U-shaped card slots 24, and U-shaped end caps 25, wherein the longitudinal beams 15, cross beams 16, and vertical beams 17 form a force-bearing frame; the longitudinal beams 15 are arranged between the first enlarged bases 13, and the first enlarged base 13 is fixed to the concrete floor through the embedded anchor rods 14; the vertical beams 17 are arranged on the first enlarged base 13 and are perpendicular to the first enlarged base 13, and the first ear plates 18 are arranged at the bottom of the vertical beams 17, and the first ear plates 18 are fixed to the first enlarged base 13 through bolts, and the cross beams 16 are connected between adjacent vertical beams 17. The top of the vertical beam 17 is provided with an embedded groove 20 and a fixing hole 21, and the embedded groove 20 is a U-shaped groove; the plug-in and separate fixing set 22 adopts a symmetrical structure, and the plug-in and separate fixing set 22 includes two symmetrically arranged U-shaped card grooves 24, and each U-shaped card groove 24 is symmetrically provided with U-shaped end heads 25 on both sides, and the U-shaped end heads 25 are provided with second fixing holes 53, and the U-shaped end heads 25 on the two U-shaped card grooves 24 are correspondingly buckled to form a plug 23; the plug-in and separate fixing set 22 is installed on the two vertical beams. 17, the plugs 23 at both ends of the pull-in and pull-out separate fixing set 22 are inserted into the embedded groove 20 and fixed by a pin, and the pin is simultaneously inserted into the first fixing hole 21 at the upper end of the vertical beam 17 and the second fixing hole 53 on the U-shaped end head 25; after the pull-in and pull-out separate fixing set 22 is installed, a square space is formed between the two U-shaped slots 24 on the pull-in and pull-out separate fixing set 22, and a U-shaped positioning plate 19 is correspondingly arranged at the lower part of the square space, and the U-shaped positioning plate 19 is welded to the cross beam 16. When manufacturing the lower hanging structure unit 48 through the lower hanging structure unit frame, the column 49 is inserted into the square space, and the lower part of the column 49 is supported on the U-shaped positioning plate 19, wherein the empty groove area above the U-shaped positioning plate 19 is consistent with the cross-sectional area of ​​the column 49. After the four columns 49 are fixed, the other components of the lower hanging structure unit 48 are welded. After the lower hanging structure unit 48 is processed, the pin used to fix the pull-out and separate fixing set 22 is pulled out, and the pull-out and separate fixing set 22 is removed, and then the lower hanging structure unit 48 is hoisted as a whole.

[0041] The shaped corbel 2 is made of steel plate, on which a mounting hole and a reserved groove 27 are arranged; the integrated embedded part 29 is made of threaded steel, and a clamping plate 28 and a first anti-falling steel plate 31 are arranged at both ends of the integrated embedded part 29, and an embedded dividing line 32 is arranged on the integrated embedded part 29; a second anti-falling steel plate 54 is arranged on the embedded steel sleeve 30; the integrated embedded part 29 and the embedded steel sleeve 30 are embedded during the construction of the concrete column 1, and the distance from the embedded dividing line 32 to the clamping plate 28 is 1. The thickness of the steel plate of the shaped corbel 2 is 0.04mm. After the shaped corbel 2 is processed, it is installed, the reserved groove 27 on the shaped corbel 2 is aligned with the integrated embedded part 29, and the integrated embedded part 29 is inserted into the reserved groove 27 on the shaped corbel 2, and the shaped corbel 2 is accurately positioned and fixed by the clamping plate 28, and then the threaded fixing rod 26 is installed at the installation hole position of the shaped corbel 2, and the threaded fixing rod 26 passes through the installation hole on the shaped corbel 2 and is connected to the embedded steel sleeve 30. Both ends of the crossbeam 3 are placed on the shaped corbel 2.

[0042] The bottom of the first square steel bracket 33 is fixedly connected to the second enlarged base 55, and a second ear plate 56 is provided at the bottom of the first square steel bracket 33, and the second ear plate 56 is fastened to the second enlarged base 55 by bolts. The first operating platform 36, the first guardrail 44, and the bottom plate 34 are provided at the top of the first square steel bracket 33; the first operating platform 36 is provided at the top of the first square steel bracket 33, and a first reserved hole is provided on the first operating platform 36, and a reinforcement sleeve 37 is welded in the first reserved hole; the small upright 38 is welded on the first operating platform 36, and a cross bar 39 is provided at the upper end of the small upright 38, and the cross bar 39 and the anti-shifting card plate 40 are both provided with second reserved holes; the anti-shifting card plate 40 is provided on both the upper and lower sides of the cross bar 39. When installing the vertical rod 41, the second reserved hole on the anti-shifting card plate 40 is pre-aligned with the second reserved hole on the cross bar 39, and the vertical rod 41 is first passed through the cross bar 39 and the second reserved hole on the anti-shifting card plate 40 and the reinforcement sleeve 37, and the lower end of the vertical rod 41 is connected to the bottom plate 34, and the bottom plate 34 is fixedly connected to the first square steel bracket 33; then the two anti-shifting card plates 40 are welded together with the vertical rod 41. The vertical rod 41 can rotate in the second reserved hole on the cross bar 39 and the reinforcement sleeve 37; the boom 42 is set at the top of the vertical rod 41, and a diagonal brace 43 is set between the boom 42 and the vertical rod 41 for reinforcement; the end of the boom 42 is provided with a lifting lug 45 and an electric hoist 46, the electric hoist 46 is hung below the lifting lug 45, and the electric hoist 46 is connected with a wire rope 47, and the lower hanging structure unit 48 is hoisted by the electric hoist 46 and the wire rope 47.

[0043] The support frame base 50, the elevating support frame 51, and the shelf support rod 52 constitute an adjustable support for the hanging structure unit. The support frame base 50 is located at the bottom of the elevating support frame 51, and the shelf support rod 52 is located at the top of the elevating support frame 51. The adjustable support for the hanging structure unit is installed at the upper end of the second square steel support 57. The adjustable support for the hanging structure unit is installed at the top of the second square steel support 57, and the bottom of the second square steel support 57 is fixed to the third enlarged base 55; the top of the second square steel support 57 is provided with a second operating platform 60 and a second guardrail 61. The bottom of the second square steel support 57 is provided with a third ear plate 59, and the third ear plate 59 is fastened to the third enlarged base 55 by bolts. The adjustable support for the hanging structure unit is arranged according to the design; the electric hoist 46 hoists the hanging structure unit 48 on the shelf support rod 52 on the hanging structure unit adjustable support through the steel wire rope 47, and adjusts the height of the hanging structure unit 48 through the hanging structure unit adjustable support and installs it.

[0044] The present invention also provides a construction method for a double-layer upright tetrahedral grid hanging steel structure, the main construction steps of which are as follows:

[0045] Step 1: Embedded parts construction: When constructing the concrete column 1 , the integrated embedded parts 29 and the embedded steel sleeve 30 are embedded simultaneously, so that the integrated embedded parts 29 and the embedded steel sleeve 30 are embedded in the concrete column 1 .

[0046] Step 2, assembling the lower hanging structural unit tire frame: the lower hanging structural unit tire frame includes a first enlarged base 13, embedded anchor rods 14, longitudinal beams 15, cross beams 16, vertical beams 17, first ear plates 18, U-shaped positioning plates 19, pull-out and separate fixing sets 22, plugs 23, U-shaped card slots 24, and U-shaped end caps 25. The enlarged base 13 is fixed to the concrete floor through the embedded anchor rods 14. The longitudinal beams 15 are installed between the first enlarged bases 13. The first ear plates 18 are arranged at the bottom of the vertical beams 17. The first ear plates 18 are fixed to the first enlarged base 13 by bolts; the vertical beams 17 are installed on the first enlarged base 13. The top of the vertical beams 17 is provided with embedded grooves 20 and fixing holes 21; the pull-out and separate fixing sets 22 include two symmetrically arranged U-shaped card slots 24, each U-shaped ends 25 are symmetrically arranged on both sides of the U-shaped slot 24, and a second fixing hole 53 is arranged on the U-shaped end 25. The U-shaped ends 25 on the two U-shaped slots 24 are correspondingly buckled to form a plug 23; the plug-in and pull-out separate fixing set 22 is installed between the tops of the two vertical beams 17, and the plugs 23 at both ends of the plug-in and pull-out separate fixing set 22 are inserted into the embedded groove 20 and fixed by a pin, and the pin is simultaneously inserted into the first fixing hole 21 at the upper end of the vertical beam 17 and the second fixing hole 53 on the U-shaped end 25; after the plug-in and pull-out separate fixing set 22 is installed, a square space is formed between the two U-shaped slots 24 on the plug-in and pull-out separate fixing set 22; a U-shaped positioning plate 19 is installed below the square space, and the U-shaped positioning plate 19 is welded to the cross beam 16.

[0047] Step three, processing the lower hanging structure unit 48: insert the column 49 into the square space, and the lower part of the column 49 is supported on the U-shaped positioning plate 19. After the four columns 49 are fixed, the other components of the lower hanging structure unit 48 are welded; after the lower hanging structure unit 48 is processed, the pin used to fix the pull-out and separate fixing set 22 is pulled out, and the pull-out and separate fixing set 22 is removed, and then the lower hanging structure unit 48 is hoisted as a whole; wherein, the other components of the lower hanging structure unit 48 include transverse connecting rods and vertical connecting rods, and the transverse connecting rods are welded between the columns 49, and the transverse connecting rods and the vertical connecting rods are arranged in a horizontal and vertical staggered manner.

[0048] Step 4, installation of the shaped corbel: make a shaped corbel 2, set a mounting hole and a reserved groove 27 on the shaped corbel 2; align the reserved groove 27 on the shaped corbel 2 with the integrated embedded part 29, and make the integrated embedded part 29 snap into the reserved groove 27 on the shaped corbel 2, accurately position and fix the shaped corbel 2 through the clamping plate 28, and then install the threaded fixing rod 26 at the mounting hole position of the shaped corbel 2, and the threaded fixing rod 26 passes through the mounting hole on the shaped corbel 2 and is connected to the embedded steel sleeve 30; install the crossbeam 3 between the shaped corbels 2.

[0049] Step 5, hoisting of the lower hanging structural unit: fix the bottom of the first square steel bracket 33 to the second enlarged base 55, install the first operating platform 36, the guardrail 44, and the bottom plate 34 on the top of the first square steel bracket 33; set a first reserved hole on the first operating platform 36 and weld a reinforcement sleeve 37 in the first reserved hole; weld and fix the small upright 38 to the first operating platform 36, set a cross bar 39 at the upper end of the small upright 38, and set a second reserved hole on the cross bar 39 and the anti-shifting card plate 40; set anti-shifting card plates 40 on both the upper and lower sides of the cross bar 39. Shift the card plate 40, and then install the vertical rod; when installing the vertical rod 41, first align the second reserved hole on the anti-shift card plate 40 with the second reserved hole on the cross bar 39, pass the vertical rod 41 through the cross bar 39 and the second reserved hole on the anti-shift card plate 40 and the reinforcement sleeve 37, and connect the lower end of the vertical rod 41 to the bottom plate 34; then weld the two anti-shift card plates 40 and the vertical rod 41 together; install the boom 42 on the vertical rod 41, install the lifting lug 45 and the electric hoist 46 on the lower side of the end of the boom 42, and connect the wire rope 47 to the electric hoist 46;

[0050] At the same time, the adjustable bracket of the hanging structure unit is installed; the adjustable bracket of the hanging structure unit is composed of a bracket base 50, a lifting bracket 51, and a shelf support rod 52; the bottom of the second square steel bracket 57 is fixed to the third enlarged base 55; a second operating platform 60 and a second guardrail 61 are set on the top of the second square steel bracket 57, and the adjustable bracket of the hanging structure unit is installed on the second operating platform 60 on the top of the second square steel bracket 57;

[0051] The electric hoist 46 hoists the lower hanging structure unit 48 through the steel wire rope 47 and places it on the support rod 52 on the adjustable bracket of the lower hanging structure unit, and adjusts the height of the lower hanging structure unit 48 through the adjustable bracket of the lower hanging structure unit and installs the lower hanging structure unit 48; the lower hanging structure units 48 are connected to each other to form a complete lower hanging structure 4, and an H-shaped steel hanging column 11 is installed between the lower hanging structure 4 and the lower chord ball 8 of the tetrahedral grid roof 6, and the lower hanging structure 4 is connected to the crossbeam 3.

Claims

1. The construction method of a double-layer upright tetrahedral grid hanging steel structure is characterized in that: The construction steps are as follows: Step 1: Construction of embedded parts: During the construction of the concrete column (1), the embedded parts (29) and the embedded steel sleeve (30) are simultaneously embedded; Step 2: Assembling the lower hanging structural unit tire frame; Step 3: Processing the lower hanging structural unit (48); Step 4, installation of the shaped corbel: a shaped corbel (2) is manufactured, and a mounting hole and a reserved groove (27) are arranged on the shaped corbel (2); the reserved groove (27) on the shaped corbel (2) is aligned with the integrated embedded part (29), and the integrated embedded part (29) is inserted into the reserved groove (27) on the shaped corbel (2), and the shaped corbel (2) is positioned and fixed by the clamping plate (28) on the integrated embedded part (29), and then a threaded fixing rod (26) is installed at the mounting hole position of the shaped corbel (2), and the threaded fixing rod (26) passes through the mounting hole on the shaped corbel (2) and is connected to the embedded steel sleeve (30); a crossbeam (3) is installed between the shaped corbels (2); Step 5, hoisting of the lower hanging structural unit: install the first operating platform (36), the first guardrail (44), and the bottom plate (34) on the top of the first square steel bracket (33); set a first reserved hole on the first operating platform (36) and weld a reinforcement sleeve (37) in the first reserved hole; weld and fix the small vertical pole (38) on the first operating platform (36), set a cross bar (39) at the upper end of the small vertical pole (38), and set a second reserved hole on the cross bar (39) and the anti-shifting card plate (40); set the anti-shifting card plate (40) on both the upper and lower sides of the cross bar (39), and then install the vertical pole; When installing the vertical rod (41), first align the second reserved hole on the anti-shifting card plate (40) with the second reserved hole on the cross bar (39), pass the vertical rod (41) through the cross bar (39) and the second reserved hole on the anti-shifting card plate (40) and the reinforcing sleeve (37), and connect the lower end of the vertical rod (41) to the bottom plate (34); then weld the two anti-shifting card plates (40) and the vertical rod (41) together; install the hanging arm (42) on the vertical rod (41), install the lifting lug (45) and the electric hoist (46) on the lower side of the end of the hanging arm (42), and connect the steel wire rope (47) to the electric hoist (46); At the same time, an adjustable bracket of the hanging structure unit is installed; the adjustable bracket of the hanging structure unit is composed of a bracket base (50), a lifting bracket (51), and a shelf support rod (52); a second operating platform (60) and a second guardrail (61) are arranged on the top of the second square steel bracket (57), and the adjustable bracket of the hanging structure unit is installed on the second operating platform (60) on the top of the second square steel bracket (57); The electric hoist (46) hoists the lower hanging structure unit (48) through the steel wire rope (47) and places it on the support rod (52) on the adjustable bracket of the lower hanging structure unit, and adjusts the height of the lower hanging structure unit (48) through the adjustable bracket of the lower hanging structure unit and installs the lower hanging structure unit (48); the lower hanging structure units (48) are connected to each other to form a complete lower hanging structure (4); an H-shaped steel hanging column (11) is installed between the lower hanging structure (4) and the lower chord ball (8) of the tetrahedral grid roof (6); and the lower hanging structure (4) is connected to the crossbeam (3).

2. The construction method of the double-layer upright quadrangular pyramid grid hanging steel structure according to claim 1 is characterized in that: In step 2, the lower hanging structural unit tire frame includes a first enlarged base (13), a pre-buried anchor rod (14), a longitudinal beam (15), a cross beam (16), a vertical beam (17), a first ear plate (18), a U-shaped positioning plate (19), a pull-in and pull-out detachable fixing set (22), a plug (23), a U-shaped card slot (24), and a U-shaped end (25). The enlarged base (13) is fixed to the concrete floor through the pre-buried anchor rod (14). The longitudinal beam (15) is installed between the first enlarged base (13). The first ear plate (18) is arranged at the bottom of the vertical beam (17). The first ear plate (18) is fixed to the first enlarged base (13) by bolts; the vertical beam (17) is installed on the first enlarged base (13), and the top of the vertical beam (17) is provided with an embedded groove (20) and a fixing hole (21); the pull-in and pull-out detachable fixing set (22) is fixed to the concrete floor through the pre-buried anchor rod (14). 2) comprising two symmetrically arranged U-shaped slots (24), each U-shaped slot (24) being symmetrically provided with U-shaped end heads (25) on both sides, the U-shaped end heads (25) being provided with second fixing holes (53), and the U-shaped end heads (25) on the two U-shaped slots (24) being correspondingly buckled to form a plug (23); installing the plug-in and plug-out detachable fixing set (22) between the tops of the two vertical beams (17), inserting the plugs (23) at both ends of the plug-in and plug-out detachable fixing set (22) into the embedded grooves (20), and fixing them by means of pins; after the plug-in and plug-out detachable fixing set (22) is installed, a square space is formed between the two U-shaped slots (24) on the plug-in and plug-out detachable fixing set (22); installing a U-shaped positioning plate (19) below the square space, and the U-shaped positioning plate (19) is welded to the cross beam (16).

3. The construction method of the double-layer upright tetrahedral grid hanging steel structure according to claim 2 is characterized in that: In step 3, the specific method of hanging the structural unit is as follows: Insert the column (49) into the square space, and support the lower part of the column (49) on the U-shaped positioning plate (19). After the four columns (49) are fixed, weld the other components of the hanging structure unit (48). After the processing of the hanging structure unit (48) is completed, remove the pin used to fix the pull-out separation fixing set (22), remove the pull-out separation fixing set (22), and then hoist the hanging structure unit (48) as a whole.

4. The construction method of the double-layer upright quadrangular pyramid grid hanging steel structure according to claim 1 is characterized in that: The shaped bracket (2) is made of steel plate, the integrated embedded part (29) is made of threaded steel, a clamping plate (28) and a first anti-falling steel plate (31) are respectively arranged at both ends of the integrated embedded part (29), and an embedded dividing line (32) is arranged on the integrated embedded part (29); the distance from the embedded dividing line (32) to the clamping plate (28) is equal to the steel plate thickness of the shaped bracket (2); and a second anti-falling steel plate (54) is arranged on the embedded steel sleeve (30).

5. The construction method of the double-layer upright quadrangular pyramid grid hanging steel structure according to claim 1 is characterized in that: The bottom of the first square steel bracket (33) is fixedly connected to the second enlarged base (55); the bottom of the first square steel bracket (33) is provided with a second ear plate (56); the second ear plate (56) is fastened to the second enlarged base (55) by bolts.

6. The construction method of the double-layer upright quadrangular pyramid grid hanging steel structure according to claim 1 is characterized in that: The bottom of the second square steel bracket (57) is fixed to the third enlarged base (55); the bottom of the second square steel bracket (57) is provided with a third ear plate (59), and the third ear plate (59) is fastened to the third enlarged base (55) by bolts.

7. A double-layer upright tetrahedral grid hanging steel structure, constructed by the construction method of a double-layer upright tetrahedral grid hanging steel structure according to any one of claims 1 to 6.

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