Fabricated steel bar floor system poured by concrete

Abstract

The utility model discloses a concrete poured assembly type reinforcing steel bar floor system, which belongs to the technical field of building design and comprises a reinforcing steel bar truss and a precast concrete layer, the reinforcing steel bar truss is wrapped in the precast concrete layer, a lower chord reinforcing steel bar is arranged on the reinforcing steel bar truss, two ends of the lower chord reinforcing steel bar protrude out of the precast concrete layer, and the end part of the lower chord reinforcing steel bar is L-shaped. The end of the lower chord steel bar is sleeved with a telescopic buckle which is made of steel, a guide strip is arranged in the telescopic buckle, one end of the guide strip is arranged in the lower chord steel bar, the other end of the guide strip is clamped with a movable sleeve in a sliding mode, the movable sleeve is sleeved with the upper end of the end of the lower chord steel bar, a sliding groove is formed in the end of the lower chord steel bar, and a spring is sleeved with the sliding groove. According to the steel bar truss composite floor system assembling device, the construction efficiency and the safety are improved, and meanwhile the stability, the durability and the safety of the assembling position of the steel bar truss composite floor system are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of building design, and more specifically to an assembled steel bar floor slab cast in concrete. Background Art

[0002] At present, the assembled integral reinforced concrete frame structure usually adopts standard column components, beam components and reinforced truss composite slabs. The advantages of reinforced truss composite slabs are that they reduce scaffolding and formwork, save manpower, speed up construction, reduce on-site wet operations, save construction costs, etc. However, the assembly of reinforced truss composite floor slabs is not stable enough. Utility Model Content

[0003] The utility model aims to overcome the deficiency of insufficient stability at the assembly point of the steel truss composite floor in the prior art, and provides a concrete poured assembled steel truss floor to solve the above deficiency.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0005] The utility model discloses a concrete cast assembled steel floor slab, comprising a steel truss and a precast concrete layer, wherein the steel truss is wrapped in the precast concrete layer, a lower chord steel bar is arranged on the steel truss, two ends of the lower chord steel bar protrude out of the precast concrete layer, the end of the lower chord steel bar is in an "L" shape, a telescopic buckle is sleeved on the end of the lower chord steel bar, the telescopic buckle is made of steel, a guide strip is arranged in the telescopic buckle, one end of the guide strip is arranged in the lower chord steel bar, the other end of the guide strip is slidably engaged with a movable kit, the movable kit is sleeved on the upper end of the end of the lower chord steel bar, and the lower chord steel bar is in an "L" shape. A slide groove is arranged in the end of the steel bar, a spring is sleeved in the slide groove, a push rod is sleeved in the spring, the push rod is sleeved in the movable kit, a spring is also sleeved in the movable kit, the spring in the movable kit is sleeved on the upper outer wall of the end of the lower chord steel bar, a cover cap is arranged on the upper end of the push rod, the cover cap is arranged above the movable kit, an elastic clip is engaged with the side of the movable kit, the bottom of the elastic clip is arranged in the lower chord steel bar, a steel bar slideway is opened in the side of the precast concrete layer for the lower chord steel bar to penetrate, and a clamping hole is opened on the precast concrete layer to be connected with the bottom of the steel bar slideway.

[0006] Preferably, a snap-fit ​​groove is provided at the bottom of the side of the movable kit, which is engaged with the slide rail on the guide bar, a convex surface and a concave surface are provided on the side of the movable kit, and an elastic concave part and an elastic convex part are provided on the side of the elastic snap-fit ​​component, the convex surface is engaged with the elastic concave part, and the concave surface is engaged with the elastic convex part.

[0007] Preferably, the end of the lower chord steel bar is also connected to a vertical rib, the vertical rib is 15 mm away from the side of the precast concrete layer, the sum of the vertical rib height and the thickness of the lower chord steel bar is the same as the thickness of the steel bar slideway, and the vertical rib is used to close the steel bar slideway.

[0008] Preferably, grooves are provided at the four ends of the precast concrete layer, the shear wall module consists of an inner and outer double concrete layer and a middle void layer, the double concrete layers are connected by a steel truss, stirrups are arranged in the inner concrete layer of the shear wall module, the ends of the stirrups are hook-shaped, the grooves are used for the stirrups to penetrate, the hook-shaped ends of the stirrups are arranged in the outer concrete layer of the shear wall module, and upper chord through-wall bars are arranged on the steel truss, the ends of the upper chord through-wall bars are hook-shaped, and the hook-shaped ends of the upper chord through-wall bars are arranged in the void layer of the shear wall module.

[0009] Preferably, the steel truss is also provided with support horizontal steel bars, two lower chord steel bars are horizontally and vertically arranged on the support horizontal steel bars, support horizontal steel bars are also arranged at the bottom of the other end of the two lower chord steel bars, the sides of the two support horizontal steel bars are connected to support vertical steel bars, the upper ends of the two support vertical steel bars are arranged with upper chord steel bars, the outer sides of the upper chord steel bars are connected with web steel bars, the web steel bars are arranged on the inner sides of the lower chord steel bars, and the bottoms of the web steel bars are bent.

[0010] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0011] The utility model discloses a concrete cast assembled steel bar floor slab, which realizes the close engagement of the lower chord steel bars of a certain floor slab with another spliced ​​floor slab and the sealing of the gap at the end of the steel bar slideway through the arranged telescopic buckle and the main structure of the vertical bar, and reserves a 15mm concrete expansion joint. Through the arranged groove and the main structure of the upper chord through-wall bar, the close assembly between the floor slab and the shear wall module is realized, which improves the construction efficiency and safety while ensuring the stability, durability and safety of the assembly of the steel bar truss composite floor slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a concrete-cast assembled steel bar floor slab of the utility model;

[0013] Figure 2 This is a structural diagram of a concrete cast assembled steel floor slab from another perspective of the utility model;

[0014] Figure 3 This is a structural diagram of the joint between the floor slabs of the utility model;

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0016] Figure 5 This is a structural diagram of another state of the joint between the floor slabs of the utility model;

[0017] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0018] Figure 7 This is a structural diagram of the joint between the floor slab and the shear wall module of the utility model;

[0019] Figure 8 It is a top view of the joint between the floor slab and the shear wall module of the utility model.

[0020] In the figure: 1. steel truss; 11. lower chord steel bar; 111. slide; 112. vertical bar; 12. upper chord wall-penetrating bar; 13. support horizontal steel bar; 14. support vertical steel bar; 15. upper chord steel bar; 16. web bar steel bar; 2. precast concrete layer; 21. steel bar slide; 22. clamping hole; 23. groove; 3. telescopic buckle; 31. guide strip; 32. movable kit; 321. clamping groove; 322. raised surface; 323. concave surface; 33. push rod; 34. cover cap; 35. elastic buckle; 351. elastic concave part; 352. elastic raised part. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0023] Combination Figure 1-6The utility model discloses a concrete cast assembled steel floor, comprising a steel truss 1 and a precast concrete layer 2, wherein the steel truss 1 is wrapped in the precast concrete layer 2, a lower chord steel bar 11 is arranged on the steel truss 1, both ends of the lower chord steel bar 11 protrude out of the precast concrete layer 2, the end of the lower chord steel bar 11 is "L" shaped, and a telescopic buckle 3 is sleeved on the upper part of the "L" shaped end of the lower chord steel bar 11, the shell of the telescopic buckle 3 is connected to the "L" shaped end of the lower chord steel bar 11, the telescopic buckle 3 is made of steel, a guide strip 31 is arranged in the telescopic buckle 3, one end of the guide strip 31 is embedded in the lower chord steel bar 11, and the other end of the guide strip 31 is slidably engaged with the bottom side of the movable kit 32, the movable kit 32 is sleeved on the upper part of the "L" shaped end of the lower chord steel bar 11, and the lower chord steel bar 11 is provided with a guide strip 31. A hollow slide groove 111 is provided in the "L"-shaped end, and a spring is sleeved in the slide groove 111, and a push rod 33 is sleeved in the spring. The push rod 33 passes through the movable kit 32, and a spring is also sleeved in the movable kit 32. This spring is sleeved on the outer wall of the upward part of the "L"-shaped end of the lower chord steel bar 11. The inner spacing of this spring is larger than the outer diameter of the lower chord steel bar 11. A cap 34 is connected to the upper end of the push rod 33, and the cap 34 is arranged above the movable kit 32. An elastic clip 35 is engaged with the side of the movable kit 32, and the bottom of the elastic clip 35 is embedded in the lower chord steel bar 11. A steel bar slide 21 is provided inside the side of the precast concrete layer 2 for the lower chord steel bar 11 to pass through, and a clamping hole 22 is provided on the precast concrete layer 2 at the bottom of the steel bar slide 21 to communicate with the steel bar slide 21.

[0024] Combination Figure 3-6 A snap-fit ​​groove 321 is provided at the bottom of the side of the movable kit 32, and the snap-fit ​​groove 321 is snap-fitted on the slide rail of the guide bar 31. A convex surface 322 and a concave surface 323 are provided on the side of the movable kit 32, and the convex surface 322 is above the concave surface 323. An elastic concave portion 351 and an elastic convex portion 352 are provided on the side of the elastic snap-fit ​​component 35, and the elastic concave portion 351 is above the elastic convex portion 352. The elastic snap-fit ​​component 35 has both elasticity and hardness, and the convex surface 322 is snap-fitted with the elastic concave portion 351, and the concave surface 323 is snap-fitted with the elastic convex portion 352.

[0025] A vertical rib 112 is also welded to the end of the lower chord steel bar 11. The sum of the height of the vertical rib 112 and the thickness of the lower chord steel bar 11 is the same as the thickness of the steel bar slide 21. The vertical rib 112 has the same diameter as the lower chord steel bar 11. The vertical rib 112 is 15 mm away from the side of the precast concrete layer 2. The vertical rib 112 is used to close the steel bar slide 21.

[0026] Combination Figure 7-8, grooves 23 are provided at the four ends of the precast concrete layer 2, the shear wall module is composed of three parts: an inner and outer double concrete layer and a middle interlayer, the inner and outer double concrete layers are connected by a steel truss 1, stirrups are inserted into the inner concrete layer of the shear wall module, the stirrups protrude from the inner concrete layer outside, the ends of the stirrups are hook-shaped, the grooves 23 are convenient for the stirrups to penetrate, and the ends of the stirrups are hook-shaped and embedded in the outer concrete layer of the shear wall module, the steel truss 1 is connected with an upper chord through-wall bar 12, the ends of the upper chord through-wall bar 12 are hook-shaped, and the hook-shaped ends of the upper chord through-wall bar 12 are downwardly penetrated into the interlayer of the shear wall module.

[0027] Combination Figure 1-2 The steel truss 1 is also provided with support horizontal steel bars 13, and two lower chord steel bars 11 are horizontally and vertically connected to the support horizontal steel bars 13. The other end bottom of the two lower chord steel bars 11 is also symmetrically connected to the support horizontal steel bars 13, and the sides of the two support horizontal steel bars 13 are connected to support vertical steel bars 14. The upper ends of the two support vertical steel bars 14 are connected to upper chord steel bars 15, and the outer sides of the upper chord steel bars 15 are symmetrically connected to web steel bars 16. The bottom of the web steel bars 16 is bent, and the web steel bars 16 are connected to the inner side of the lower chord steel bars 11.

[0028] Working principle: When the span of the pre-installed building is relatively large and the floor module needs to be assembled, the pressing cap 34 at the end of the lower chord steel bar 11 in a certain floor slab is pressed, and the spring rod 33 is moved downward by the spring, driving the movable kit 32 to move downward by the spring, and the engaging groove 321 moves downward on the slide rail of the guide bar 31 to squeeze the elastic buckle 35 until the convex surface 322 is engaged with the elastic concave part 351, and while pressing the cap 34, the lower chord steel bar 11 of this floor slab is inserted into the steel bar slideway 21 of another floor slab, and slides to the steel bar of the other floor slab. At the bottom of the steel bar slideway 21, the vertical steel bar 112 is engaged with the end of the steel bar slideway 21. At the position of the clamping hole 22, the spring releases the pressure, and the movable kit 32 squeezes the elastic clamping member 35 through the spring rebound until the elastic protrusion 352 is engaged with the inner concave surface 323, and the spring rod 33 rebounds, and the upper surface of the cap 34 protrudes from the upper surface of the clamping hole 22. The cap 34 is locked by the locking bolt, and the lower chord steel bar 11 is clamped with the precast concrete layer 2 of another floor slab. Similarly, the lower chord steel bar 11 of another floor slab is inserted into the steel bar slideway 21 of this floor slab and clamped;

[0029] The floor slab is placed above the inner concrete layer of the shear wall module, the stirrups in the inner concrete layer are inserted upward into the grooves 23 of the floor slab, the hook-shaped ends of the upper chord through-wall bars 12 are inserted downward into the interlayer of the shear wall module, and the lower chord steel bars 11 of the floor slab are inserted into the outer concrete layer of the shear wall module.

[0030] In summary: the utility model is a concrete cast assembled steel floor, which realizes the tight engagement of the lower chord steel bar 11 of a certain floor slab with another spliced ​​floor slab and the sealing of the gap at the end of the steel bar slide 21 through the main structure of the telescopic buckle 3 and the vertical rib 112, and reserves a 15mm concrete expansion joint. Through the main structure of the groove 23 and the upper chord through-wall bar 12, the floor slab and the shear wall module are tightly assembled, which improves the construction efficiency and safety while ensuring the stability, durability and safety of the assembly of the steel truss composite floor.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete cast assembled steel floor, comprising a steel truss (1) and a precast concrete layer (2), characterized in that: The steel bar truss (1) is wrapped in a precast concrete layer (2). A lower chord steel bar (11) is arranged on the steel bar truss (1). Both ends of the lower chord steel bar (11) protrude outside the precast concrete layer (2). The end of the lower chord steel bar (11) is in an "L" shape. A telescopic buckle (3) is sleeved on the end of the lower chord steel bar (11). The telescopic buckle (3) is made of steel. A guide bar (31) is arranged in the telescopic buckle (3). One end of the guide bar (31) is arranged in the lower chord steel bar (11). The other end of the guide bar (31) is slidably engaged with a movable kit (32). The movable kit (32) is sleeved on the upper end of the end of the lower chord steel bar (11). A slide groove (111) is arranged in the end of the lower chord steel bar (11). A slide groove (111) is sleeved in the slide groove (111). A spring is sleeved inside the spring, the spring is sleeved inside the spring, the spring is sleeved inside the movable set (32), the movable set (32) is also sleeved inside the spring, the spring inside the movable set (32) is sleeved on the upper end outer wall of the end of the lower chord steel bar (11), a cover cap (34) is arranged on the upper end of the spring rod (33), the cover cap (34) is arranged above the movable set (32), an elastic clip (35) is engaged with the side of the movable set (32), the bottom of the elastic clip (35) is arranged in the lower chord steel bar (11), a steel bar slideway (21) is opened in the side of the precast concrete layer (2) for the lower chord steel bar (11) to penetrate, and a clamping hole (22) is opened on the precast concrete layer (2) and is connected to the bottom of the steel bar slideway (21).

2. The concrete cast assembled steel floor according to claim 1, characterized in that: The movable set (32) has a locking groove (321) at the bottom of the side, the locking groove (321) is locked with the slide rail on the guide bar (31), the movable set (32) has a convex surface (322) and a concave surface (323) at the side, the elastic buckle (35) has an elastic concave portion (351) and an elastic convex portion (352) at the side, the convex surface (322) is locked with the elastic concave portion (351), and the concave surface (323) is locked with the elastic convex portion (352).

3. The concrete cast assembled steel floor according to claim 1, characterized in that: The end of the lower chord steel bar (11) is also connected to a vertical bar (112), the vertical bar (112) is 15 mm away from the side of the precast concrete layer (2), the sum of the height of the vertical bar (112) and the thickness of the lower chord steel bar (11) is the same as the thickness of the steel bar slideway (21), and the vertical bar (112) is used to close the steel bar slideway (21).

4. The concrete cast assembled steel floor according to claim 1, characterized in that: The four ends of the precast concrete layer (2) are provided with grooves (23); the shear wall module is composed of an inner and outer double concrete layer and a middle interlayer; the double concrete layers are connected by a steel truss (1); stirrups are arranged in the inner concrete layer of the shear wall module; the ends of the stirrups are hook-shaped; the grooves (23) are used for the stirrups to penetrate; the ends of the stirrups are hook-shaped and arranged in the outer concrete layer of the shear wall module; the steel truss (1) is provided with an upper chord through-wall bar (12); the ends of the upper chord through-wall bar (12) are hook-shaped; the hook-shaped ends of the upper chord through-wall bar (12) are arranged in the interlayer of the shear wall module.

5. The concrete cast assembled steel floor according to claim 1, characterized in that: The steel truss (1) is also provided with a support horizontal steel bar (13), two lower chord steel bars (11) are arranged horizontally and vertically on the support horizontal steel bar (13), the other end of the two lower chord steel bars (11) is also provided with a support horizontal steel bar (13), the two support horizontal steel bars (13) are connected to the side with a support vertical steel bar (14), the upper end of the two support vertical steel bars (14) is provided with an upper chord steel bar (15), the outer side of the upper chord steel bar (15) is connected with a web steel bar (16), the web steel bar (16) is arranged on the inner side of the lower chord steel bar (11), and the bottom of the web steel bar (16) is bent.

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