CN114412069B - Steel truss structure of concrete floor slab - Google Patents
Steel truss structure of concrete floor slab Download PDFInfo
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- CN114412069B CN114412069B CN202210134759.3A CN202210134759A CN114412069B CN 114412069 B CN114412069 B CN 114412069B CN 202210134759 A CN202210134759 A CN 202210134759A CN 114412069 B CN114412069 B CN 114412069B
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- telescopic
- steel
- web member
- lower chord
- steel bar
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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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/166—Connectors or means for connecting parts for reinforcements the reinforcements running in different directions
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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
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the field of steel trusses, in particular to a steel truss structure of a concrete floor slab, which comprises web member reinforcing bars, upper chord reinforcing bars, lower chord reinforcing bars and connecting pieces; the bottoms of two sides of the web member steel bar are provided with lower chord steel bars, the inner sides of the tops of the web member steel bars are provided with upper chord steel bars, and the outer sides of the lower chord steel bars and the upper chord steel bars are provided with connecting pieces; the utility model discloses a web member reinforcing bar, including web member reinforcing bar, fixed collar, lower chord reinforcing bar, the web member reinforcing bar, the outer wall fixedly connected with collar in bottom, be equipped with collar and fixed collar, insert the collar in with the lower chord reinforcing bar that has fixed collar in, then by rotating the head drive threaded rod rotation, threaded rod rotation is to the inside removal of fixed collar, will link the board jack-up after the cylinder part of threaded rod contacts with the link board, the flexible piece that has driven movable post displacement makes its head pops up under the elasticity of third expansion spring in the connecting hole that the collar inboard set up will be gone into to will go into the chord reinforcing bar and web member reinforcing bar is fixed, fixed strength is high, this kind of steel truss is convenient for transport, and is convenient for assemble.
Description
Technical Field
The invention relates to the field of steel trusses, in particular to a steel truss structure of a concrete floor slab.
Background
Steel trusses are used for steel truss industry and civil building roof structure crane beams, bridges, hydraulic gates and the like, and are commonly used as main bearing members. Various towers, such as mast towers, television towers, transmission line towers and the like, are commonly used as space steel trusses formed by three-face, four-face or multi-face plane trusses, and web member systems of the steel trusses are generally in a herringbone or monoclinic mode. The number of web members and the number of nodes of the herringbone web members are small, and the application is wide; to reduce the internode size of a loaded chord or compressed chord, it is common to add a partial vertical post.
The existing concrete floor steel truss structure mainly has the following problems: 1. the web member steel bars on the steel truss are fixedly connected with the upper chord steel bars and the lower chord steel bars through welding, the welding is generally divided into two types, one type is that the welding is completed in a production factory, the steel truss is transported to a building site after the welding is completed in the factory, the welded steel truss is large in size, irregular in shape and capable of occupying extremely large transportation space, transportation efficiency is affected, the other type is transported to the construction site for welding, for some steel trusses needing to be installed at high altitude, workers are required to lift a welding machine to be at high altitude for use, the length of the welded steel bars is long, and a clamp or a worker are required to limit and fix the steel trusses, so that the construction engineering period is obviously prolonged; 2. when the steel trusses and the floor slabs are fixed, the distance between two adjacent steel trusses is required to be measured and then the steel trusses are installed, and the upper chord steel bars and the lower chord steel bars of the two adjacent steel trusses are welded, so that the labor intensity of workers is certainly increased; we therefore propose a concrete floor steel truss structure.
Disclosure of Invention
Aiming at the problems that the welded steel truss is inconvenient to transport and the relevance between the upper chord steel bar and the lower chord steel bar of the steel truss is poor in the prior art, the invention provides a steel truss structure of a concrete floor slab.
The technical scheme adopted for solving the technical problems is as follows: a steel truss structure of a concrete floor slab comprises web member reinforcing steel bars, upper chord reinforcing steel bars, lower chord reinforcing steel bars and connecting pieces;
the bottoms of two sides of the web member steel bar are provided with lower chord steel bars, the inner sides of the tops of the web member steel bars are provided with upper chord steel bars, and the outer sides of the lower chord steel bars and the upper chord steel bars are provided with connecting pieces;
the outer walls of the bottoms of the two sides of the web member steel bars are fixedly connected with mounting rings, the outer side walls of the lower chord steel bars are fixedly sleeved with fixing lantern rings, the front ends of the fixing lantern rings are provided with rotating heads, and the outer walls of the rear ends of the rotating heads are fixedly connected with threaded rods;
the inner wall of the bottom of the obliquely upper part of the fixed lantern ring is fixedly provided with a first telescopic spring, and the tail end of the top of the first telescopic spring is fixedly connected with a telescopic cylinder;
the outer side wall of the top of the telescopic cylinder is fixedly sleeved with a top ring, the periphery of the bottom of the top ring is movably connected with a rotating plate, the inner side of the telescopic cylinder is slidably sleeved with a movable column, and the outer wall of the bottom of the movable column is fixedly connected with a connecting plate;
the telescopic block is arranged at the position, corresponding to the rotating plate, of the periphery side of the top of the movable column, the third telescopic spring is arranged at the position, corresponding to the telescopic block, of the inner side of the movable column, and the through groove is formed in the position, corresponding to the telescopic block, of the inner side of the telescopic cylinder.
Specifically, the fixed lantern ring is inclined upper portion bottom inner wall fixedly connected with second telescopic spring, the terminal fixed connection limit slider in second telescopic spring top.
Specifically, a chute is formed in the inner side of the mounting ring and at a position corresponding to the limiting slide block.
Specifically, the connecting plate is of a triangular structure, and one end of the threaded rod, which is far away from the rotating head, is of a conical structure.
Specifically, the outer side wall of the lower chord steel bar is fixedly provided with a lantern ring, one side of the lantern ring is fixedly welded with an annular hook, the inner side of the annular hook is sleeved with a steel rope, and the outer walls of two sides close to the top of the web member steel bar are respectively fixedly connected with a first clamping block and a second clamping block.
Specifically, the outer wall of the bottom of one side of the first clamping block is fixedly connected with a positioning arc block, and a positioning groove is formed in the inner side of the second clamping block and at a position corresponding to the positioning arc block.
Specifically, the connecting piece includes sleeve main part and a fixed section of thick bamboo, fixed section of thick bamboo rear side outer wall fixed mounting has the go-between, sleeve main part outside activity has cup jointed range finding cloth, sleeve main part top and bottom inboard are provided with two sets of fourth telescopic springs, two sets of the close one end fixedly connected with flexible pawl of fourth telescopic spring.
Specifically, the sleeve main part is rotated with fixed section of thick bamboo through the go-between and is connected, the quantity of flexible pawl is two sets of, and two sets of flexible pawls are oblique symmetrical distribution.
Specifically, the fixed cylinder is fixedly sleeved on the outer side walls of one group of upper chord steel bars and lower chord steel bars, and pawl grooves are formed in the positions, corresponding to the telescopic pawls, of the inner sides of the upper chord steel bars and the lower chord steel bars.
The invention has the beneficial effects that:
(1) The lower chord steel bar with the fixed lantern ring is inserted into the mounting ring, then the threaded rod is driven to rotate by the rotating head, the threaded rod rotates to move towards the inside of the fixed lantern ring, when the cylindrical part of the threaded rod is contacted with the connecting plate, the connecting plate is jacked up, the movable column is driven to displace, so that the telescopic block at the head of the movable column is ejected out under the elasticity of the third telescopic spring to jack the rotating plate into the connecting hole arranged at the inner side of the mounting ring, the lower chord steel bar and the web member steel bar are fixed, the fixing strength is high, and the steel truss is convenient to transport and assemble;
(2) The steel truss structure of the concrete floor slab is provided with the devices such as the lantern ring, the steel rope and the like, the steel rope is fixedly welded on the lantern ring after the lower chord steel bar is inserted into the mounting ring, then the upper chord steel bar is inserted into the first clamping block and the second clamping block, the first clamping block and the second clamping block are positioned through the positioning arc block and the positioning groove, then the lower chord steel bar and the web member steel bar are fixedly installed, the first clamping block and the second clamping block generate the leaning clamping force through the steel rope, so that the upper chord steel bar is clamped and fixed, the upper chord steel bar and the lower chord steel bar have better correlation, and the stability of the steel truss is improved;
(3) According to the steel truss structure of the concrete floor slab, the connecting piece is arranged, the fixing barrel in the connecting piece is fixed on one group of steel trusses, the distance measuring cloth on the outer side of the sleeve body is pulled to enable the sleeve body to rotate, the telescopic pawls are ejected out to be clamped with pawl grooves on the steel trusses by the elasticity of the fourth telescopic springs, the connecting piece and the steel trusses are fixed, the distance between every two adjacent columns of steel trusses can be measured by the distance measuring cloth, the distance measuring trouble is reduced, and construction is convenient.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic perspective view of a steel truss structure of a concrete floor slab;
FIG. 2 is an enlarged schematic view of portion A shown in FIG. 1;
FIG. 3 is a schematic view of a connection structure between a mounting ring and a fixing collar;
FIG. 4 is an enlarged schematic view of portion B shown in FIG. 3;
FIG. 5 is a schematic view of the connection structure between the rotary head, threaded rod, movable column and telescopic cylinder;
FIG. 6 is a schematic view of the connection structure between the telescopic cylinder and the movable column;
FIG. 7 is a schematic view of the internal structure of the movable column;
fig. 8 is a schematic diagram of a connection structure among the first clamping block, the second clamping block and the upper chord steel bar;
fig. 9 is a schematic view of the connection structure between the steel rope, the collar, the ring hook and the lower chord steel bar.
In the figure: 1. web member reinforcement; 2. lower chord steel bars; 3. a collar; 301. an annular hook; 4. a steel rope; 5. a first clamping block; 6. winding a steel bar; 7. a second clamping block; 8. a connecting piece; 801. distance measuring cloth; 802. a sleeve body; 803. a fixed cylinder; 804. a connecting ring; 805. a retractable pawl; 806. a first extension spring; 9. a mounting ring; 10. a rotating head; 11. a fixed collar; 12. a threaded rod; 13. a telescopic cylinder; 14. a top ring; 15. a rotating plate; 16. a movable column; 17. a connecting plate; 18. positioning an arc block; 19. a telescopic block; 20. a third extension spring; 21. a second extension spring; 22. a limit sliding block; 23. a chute; 24. a fourth extension spring; 25. and (5) through grooves.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 9, the steel truss structure of the concrete floor slab of the present invention comprises web member reinforcing bars 1, upper chord reinforcing bars 6, lower chord reinforcing bars 2 and connecting pieces 8;
the bottoms of two sides of the web member steel bar 1 are provided with lower chord steel bars 2, the inner side of the top of the web member steel bar 1 is provided with an upper chord steel bar 6, and the outer sides of the lower chord steel bar 2 and the upper chord steel bar 6 are provided with connecting pieces 8;
the outer walls of the bottoms of the two sides of the web member reinforcing steel bars 1 are fixedly connected with mounting rings 9, the outer side walls of the lower chord reinforcing steel bars 2 are fixedly sleeved with fixing lantern rings 11, the front ends of the fixing lantern rings 11 are provided with rotating heads 10, and the outer walls of the rear ends of the rotating heads 10 are fixedly connected with threaded rods 12; the inner wall of the bottom part of the obliquely upper part of the fixed lantern ring 11 is fixedly provided with a first telescopic spring 24, and the tail end of the top part of the first telescopic spring 24 is fixedly connected with a telescopic cylinder 13; the outer side wall of the top of the telescopic cylinder 13 is fixedly sleeved with a top ring 14, the periphery of the bottom of the top ring 14 is movably connected with a rotating plate 15, the inner side of the telescopic cylinder 13 is slidably sleeved with a movable column 16, and the outer wall of the bottom of the movable column 16 is fixedly connected with a connecting plate 17; the telescopic block 19 is arranged at the position corresponding to the rotary plate 15 on the peripheral side of the top of the movable column 16, the third telescopic spring 20 is arranged at the position corresponding to the telescopic block 19 on the inner side of the movable column 16, and the through groove 25 is formed at the position corresponding to the telescopic block 19 on the inner side of the telescopic cylinder 13; the inner wall of the bottom part of the inclined upper part of the fixed lantern ring 11 is fixedly connected with a second telescopic spring 21, the tail end of the top part of the second telescopic spring 21 is fixedly connected with a limit sliding block 22, the inner side of the mounting ring 9 is provided with a sliding groove 23 corresponding to the limit sliding block 22, the connecting plate 17 is in a triangular structure, and one end of the threaded rod 12 far away from the rotating head 10 is in a conical structure;
firstly, fixedly connecting a lower chord steel bar 2 with a fixed lantern ring 11 with a web member steel bar 1, inserting the lower chord steel bar 2 into a mounting ring 9 until a second telescopic spring 21 inserts a limit sliding block 22 into a sliding groove 23, so that limit is realized between the lower chord steel bar 2 and the mounting ring 9, slowly rotating the lower chord steel bar 2, enabling a telescopic cylinder 13 to spring into a connecting hole in the mounting ring 9 under the elastic force of a first telescopic spring 24, screwing a rotating head 10, driving a threaded rod 12 fixedly connected with the rotating head 10 to rotate by the rotating head 10, enabling the threaded rod 12 to rotate towards the inside of the fixed lantern ring 11, after a cylindrical part of the threaded rod 12 is contacted with a connecting plate 17, pressing the connecting plate 17 upwards, and driving the movable column 16 to move downwards by the connecting plate 17 under the action of a third telescopic spring 20, ejecting a rotating plate 15 on the periphery side of a top ring 14 by a through groove 25 on the telescopic cylinder 13, enabling the rotating plate 15 to be extruded into the connecting hole of the mounting ring 9, thereby realizing that the lower chord steel bar 9 is fixedly assembled with the steel bar 9, and the steel truss is convenient to assemble and install the steel bar;
the outer side wall of the lower chord steel bar 2 is fixedly provided with a lantern ring 3, one side of the lantern ring 3 is fixedly welded with an annular hook 301, the inner side of the annular hook 301 is sleeved with a steel rope 4, the outer walls of two sides close to the top of the web member steel bar 1 are respectively fixedly connected with a first clamping block 5 and a second clamping block 7, the outer wall of the bottom of one side of the first clamping block 5 is fixedly connected with a positioning arc block 26, and the inner side of the second clamping block 7 is provided with a positioning groove corresponding to the positioning arc block 26;
when the lower chord steel bar 2 and the mounting ring 9 are limited, the upper chord steel bar 6 is inserted between the first clamping block 5 and the second clamping block 7, after the lower chord steel bar 2 and the mounting ring 9 are completely fixed, two ends of the steel rope 4 are sleeved on the annular hook 301, the lantern ring 3 on the lower chord steel bar 2 is tensioned by the steel rope 4, so that the web member steel bars 1 are close to each other in the similar direction, and the first clamping block 5 and the second clamping block 7 are arranged at the positions of the two sides close to the top of the web member steel bar 1, so that the first clamping block 5 and the second clamping block 7 generate the clamping force which is close to each other, the upper chord steel bar 6 is clamped and fixed, the relevance between the lower chord steel bar 2 and the upper chord steel bar 6 is enhanced, and the integral stability of the steel truss is ensured;
the connecting piece 8 comprises a sleeve main body 802 and a fixing barrel 803, wherein a connecting ring 804 is fixedly arranged on the outer wall of the rear side of the fixing barrel 803, a distance measuring cloth 801 is movably sleeved on the outer side of the sleeve main body 802, two groups of fourth telescopic springs 806 are arranged on the inner sides of the top and the bottom of the sleeve main body 802, telescopic pawls 805 are fixedly connected to one ends of the two groups of fourth telescopic springs 806 close to each other, the sleeve main body 802 is rotationally connected with the fixing barrel 803 through the connecting ring 804, the two groups of telescopic pawls 805 are in obliquely symmetrical distribution, the fixing barrel 803 is fixedly sleeved on the outer side walls of one group of upper chord steel bars 6 and lower chord steel bars 2, and pawl grooves are formed in positions, corresponding to the telescopic pawls 805, of the inner sides of the other group of upper chord steel bars 6 and the lower chord steel bars 2.
Because the steel bars and other components in the invention are assembled structures, the steel bars and other components can be made shorter than normal steel trusses, the normal steel trusses need to be twisted off equipment of the steel bars in processing, the steel bars need to be polished after being twisted off, and because the characteristic that the steel trusses can be assembled can be spliced by adopting a plurality of groups of steel trusses without using the twisting off and polishing equipment, the processing period is effectively shortened, then the upper chord steel bars 6 and the lower chord steel bars 2 on each group of steel trusses are connected, the connecting piece 8 is connected in the connecting process that a fixing cylinder 803 is fixed on one group of upper chord steel bars 6 and lower chord steel bars 2, then the upper chord steel bars 6 and the lower chord steel bars 2 on the other group of steel trusses are inserted into a sleeve body 802 on the connecting piece 8, until two groups of upper chord steel bars 6 and lower chord steel bars 2 are in contact with the other group of upper chord steel bars and lower chord steel bars, as the sleeve main body 802 is rotationally connected with the fixed barrel 803 through the connecting ring 804, the distance measuring cloth 801 is sleeved on the outer side of the sleeve main body 802, then the distance measuring cloth 801 on the outer side of the sleeve main body 802 is pulled, the distance measuring cloth 801 drives the sleeve main body 802 to rotate, when the telescopic pawls 805 on the sleeve main body 802 are inserted into the pawl grooves under the action of the fourth telescopic springs 806, the fixed connection of the sleeve main body 802 and the upper chord steel bars and the lower chord steel bars is realized, the distance between the two rows of steel trusses is 20cm after the distance measuring cloth 801 is completely unfolded, the distance between the two rows of steel trusses can be determined, and the distance between the two rows of steel trusses can be measured without additional distance measuring tools, so that the construction of workers is more convenient.
Working principle:
the fixed connection process of the lower chord steel bar 2 and the mounting ring 9 comprises the following steps:
inserting the lower chord steel bar 2 with the fixed lantern ring 11 into the mounting ring 9, realizing the limit of the lower chord steel bar 2 through the limit sliding block 22, when the telescopic cylinder 13 is inserted into the connecting hole of the mounting ring 9, then screwing the rotating head 10 to drive the movable column 16 to move downwards, so that the telescopic block 19 on the movable column 16 pushes the rotating plate 15 out of the connecting hole under the action of the third telescopic spring 20, and the lower chord steel bar 2 and the mounting ring 9 are fixedly connected;
the fixed installation process of the winding steel bar 6 comprises the following steps:
when the lower chord steel bar 2 and the mounting ring 9 are limited, the upper chord steel bar 6 is inserted between the first clamping block 5 and the second clamping block 7 at the moment, the steel rope 4 is connected to the lantern ring 3, the web member steel bar 1 generates leaning force after the steel rope 4 is tensioned, and further the first clamping block 5 and the second clamping block 7 generate leaning clamping force to clamp and fix the upper chord steel bar 6, so that the steel truss is convenient to transport and simple to install;
the connection process between the steel trusses comprises the following steps:
and finally, assembling two adjacent steel trusses, fixing two groups of adjacent upper and lower chord steel bars through a connecting piece 8, unfolding the distance measurement cloth 801, driving the sleeve main body 802 to rotate, enabling the telescopic pawls 805 on the sleeve main body to be inserted into the pawl grooves under the action of the fourth telescopic springs 806, realizing the fixed installation of the two adjacent steel trusses, enabling the integrity of the steel trusses to be enhanced, and enabling the distance measurement cloth 801 to be used for measuring the distance between the two rows of adjacent steel trusses to facilitate construction.
The contact end of the connecting plate 17 and the threaded rod 12 can adopt a ball head structure, so that the low-cost jacking and extending functions are realized.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing examples, and that the foregoing description and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A concrete floor steel truss structure, its characterized in that: comprises a web member steel bar (1), an upper chord steel bar (6), a lower chord steel bar (2) and a connecting piece (8);
the bottoms of two sides of the web member steel bar (1) are provided with lower chord steel bars (2), the inner side of the top of the web member steel bar (1) is provided with an upper chord steel bar (6), and the outer sides of the lower chord steel bar (2) and the upper chord steel bar (6) are provided with connecting pieces (8);
the outer walls of the bottoms of the two sides of the web member reinforcing steel bars (1) are fixedly connected with mounting rings (9), the outer side walls of the lower chord reinforcing steel bars (2) are fixedly sleeved with fixing lantern rings (11), the front ends of the fixing lantern rings (11) are provided with rotating heads (10), and the outer walls of the rear ends of the rotating heads (10) are fixedly connected with threaded rods (12);
the inner wall of the bottom part of the obliquely upper part of the fixed lantern ring (11) is fixedly provided with a first telescopic spring (24), and the tail end of the top part of the first telescopic spring (24) is fixedly connected with a telescopic cylinder (13);
a top ring (14) is fixedly sleeved on the outer side wall of the top of the telescopic cylinder (13), a rotating plate (15) is movably connected to the peripheral side of the bottom of the top ring (14), a movable column (16) is slidably sleeved on the inner side of the telescopic cylinder (13), and a connecting plate (17) is fixedly connected to the outer wall of the bottom of the movable column (16);
the telescopic support is characterized in that a telescopic block (19) is arranged at the position, corresponding to the rotating plate (15), of the periphery of the top of the movable column (16), a third telescopic spring (20) is arranged at the position, corresponding to the telescopic block (19), of the inner side of the movable column (16), and a through groove (25) is formed in the position, corresponding to the telescopic block (19), of the inner side of the telescopic cylinder (13).
2. A concrete floor steel truss structure according to claim 1, wherein: the fixed lantern ring (11) is fixedly connected with a second telescopic spring (21) on the inner wall of the bottom of the obliquely upper part, and the tail end of the top of the second telescopic spring (21) is fixedly connected with a limiting sliding block (22).
3. A concrete floor steel truss structure according to claim 2, wherein: a sliding groove (23) is formed in the inner side of the mounting ring (9) and corresponds to the limiting sliding block (22).
4. A concrete floor steel truss structure according to claim 1, wherein: the connecting plate (17) is of a triangular structure, and one end, far away from the rotating head (10), of the threaded rod (12) is of a conical structure.
5. A concrete floor steel truss structure according to claim 1, wherein: the steel wire rope clamping device is characterized in that a lantern ring (3) is fixedly arranged on the outer side wall of the lower chord steel bar (2), an annular hook (301) is fixedly welded on one side of the lantern ring (3), a steel wire rope (4) is sleeved on the inner side of the annular hook (301), and a first clamping block (5) and a second clamping block (7) are fixedly connected to the outer walls of two sides, close to the top of the web member steel bar (1).
6. A concrete floor steel truss structure according to claim 5, wherein: the outer wall of the bottom of one side of the first clamping block (5) is fixedly connected with a positioning arc block (26), and a positioning groove is formed in the inner side of the second clamping block (7) and in a position corresponding to the positioning arc block (26).
7. A concrete floor steel truss structure according to claim 1, wherein: the connecting piece (8) comprises a sleeve main body and a fixed cylinder, wherein a connecting ring is fixedly arranged on the outer wall of the rear side of the fixed cylinder, distance measuring cloth is movably sleeved on the outer side of the sleeve main body, two groups of fourth telescopic springs are arranged on the inner sides of the top and the bottom of the sleeve main body, and telescopic pawls are fixedly connected to one ends, close to the other ends, of the fourth telescopic springs.
8. A concrete floor steel truss structure according to claim 7, wherein: the sleeve main body is rotationally connected with the fixed cylinder through the connecting ring, the number of the telescopic pawls is two, and the two telescopic pawls are distributed in an oblique symmetrical mode.
9. A concrete floor steel truss structure according to claim 7, wherein: the fixed cylinder is fixedly sleeved on the outer side walls of one group of upper chord steel bars (6) and lower chord steel bars (2), and pawl grooves are formed in positions, corresponding to the telescopic pawls, of the inner sides of the upper chord steel bars (6) and the lower chord steel bars (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134759.3A CN114412069B (en) | 2022-02-14 | 2022-02-14 | Steel truss structure of concrete floor slab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210134759.3A CN114412069B (en) | 2022-02-14 | 2022-02-14 | Steel truss structure of concrete floor slab |
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| CN114412069A CN114412069A (en) | 2022-04-29 |
| CN114412069B true CN114412069B (en) | 2023-07-07 |
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| CN115233884A (en) * | 2022-09-05 | 2022-10-25 | 绍兴三雄钢结构有限公司 | Assembled steel bar truss floor board |
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| JP2008050766A (en) * | 2006-08-22 | 2008-03-06 | Jfe Metal Products & Engineering Inc | Reinforcing bar truss and deck plate with reinforcing bar truss |
| US9303399B2 (en) * | 2012-08-06 | 2016-04-05 | Thomas M. Espinosa | Holder and concrete anchor assemblies |
| CN214614894U (en) * | 2020-10-13 | 2021-11-05 | 张立琦 | Steel pipe truss |
| CN113833184B (en) * | 2021-09-18 | 2022-11-29 | 浙江钢本集成房屋有限公司 | Assembled integrated house steel bar truss floor bearing plate and assembling method |
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