An assembled recycled concrete beam-slab frame structure

Abstract

The present invention discloses an assembled recycled concrete beam-slab frame structure, which comprises a precast beam (1) and a precast slab (2), wherein two rows of mirror-imaged reserved anchor bars (3) extend outward from the outer side surface of the precast slab (2), and anchor holes (4) are reserved at the bottom of the precast beam (1) for docking with the lower row of anchor bars (3); a panel (5) is provided on the outer side surface of the precast beam (1) on the side opposite to the precast slab (2), and several rows of equidistantly arranged tensile plates (6) are welded to the upper top surface of the precast beam (1), the ends of the tensile plates (6) are welded and fixed to the inner side surface of the panel (5), and a prestressed fixing device is provided between two adjacent tensile plates (6). The present invention has a simple structure, can effectively realize the rapid docking of beams and slabs, improves the connection strength and shear resistance between the connection nodes, and does not require other auxiliary support equipment after successful docking, thereby greatly simplifying the overall operation steps.

Description

Technical Field

[0001] The present invention relates to the technical field related to prefabricated buildings, and in particular to an assembled recycled concrete beam-slab frame structure. Background Art

[0002] Recycled concrete refers to new concrete made by crushing, cleaning, and grading discarded concrete blocks, mixing them with grading in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregates), and then adding cement, water, etc. The shape and surface characteristics of the aggregates affect the performance of the concrete. Cubic or spherical particles with a smooth surface are beneficial to the fluidity of the fresh concrete, but the bonding with cement stone is poor. Compared with natural aggregates, most recycled aggregates are covered with mortar, so the surface is very rough and the surface area is large, which is beneficial to improving the bonding with cement stone, but not conducive to the fluidity of fresh concrete. Therefore, recycled concrete is obviously not suitable for on-site pouring construction. The characteristics of prefabricated building components with a vibration table that can fully vibrate to improve the fluidity of fresh concrete are particularly prominent. Therefore, recycled concrete is currently mostly used in the direction of prefabricated building components. At present, the main problem of prefabricated buildings is the docking of various component connection nodes, among which the docking structure between beam-slab frames is the most obvious. The common connection method between beams and slabs is to pre-connect them by embedding reinforcement, and finally pour a higher grade concrete at the joint to improve the shear resistance of the joint. Among them, the embedding reinforcement method is the most time-consuming. Whether it is threaded sleeve docking or grouting sleeve docking, the docking method requires the help of external tools to complete. Summary of the Invention

[0003] The object of the present invention is to provide an assembled recycled concrete beam-slab frame structure, which can effectively solve the problems existing in the background technology.

[0004] In order to solve the problems existing in the background technology, it comprises a prefabricated beam 1 and a prefabricated plate 2. The outer side surface of the prefabricated plate 2 extends outwardly with two rows of mirror-imaged reserved anchor bars 3, and the bottom of the prefabricated beam 1 is reserved with anchor holes 4 that connect with the lower row of anchor bars 3.

[0005] A panel 5 is provided on the outer side surface of the precast beam 1 on the opposite side to the precast panel 2. Several rows of tensile plates 6 arranged equidistantly from each other are welded on the upper top surface of the precast beam 1. The ends of the tensile plates 6 are welded and fixed to the inner side surfaces of the panel 5. A prestressed fixing device is provided between two adjacent tensile plates 6. The precast beam 1 and the precast panel 2 are connected by a prestressed steel cable 7. The two ends of the prestressed steel cable 7 are respectively connected to the prestressed fixing device and the anchor ring 8. Several anchor rings 8 are pre-buried in the top of the precast panel 2.

[0006] The prestressed fixing device includes a driving rod 9, and a connecting rod groove 10 is respectively provided at both ends of the driving rod 9. A driving connecting rod 11 that is rotatably connected to it is provided in each connecting rod groove 10. The two sides of the bottom of the driving connecting rod 11 are rotatably connected to the side wall of the tension plate 6 through a hinge shaft 12. The end of the driving rod 9 opposite to the enclosure 5 is installed with a pull rod 22 that is rotatably connected to it. The end of the pull rod 22 is rotatably connected to the hanging ring 13 through a guide shaft 14. The two ends of the guide shaft 14 are respectively slidably matched with the guide groove 15 provided on the side wall of the tension plate 6.

[0007] The bottom of the driving connecting rod 11 is an eccentric wheel structure with the hinge shaft 12 as the center;

[0008] The upper row of embedded steel bars 3 is placed between the upper top surface of the precast beam 1 and the eccentric wheel of the driving connecting rod 11.

[0009] Locking holes 16 communicating with the rebar hole 4 are reserved on both sides thereof, and a lower row of rebar locking holes 17 communicating with the rebar hole 4 is provided at the bottom between the two locking holes 16. A locking head 18 that slides with the clearance therewith is provided in the lower row of rebar locking holes 17, and a locking rod 19 is fixedly installed on the upper end of the locking head 18. The top of the locking rod 19 passes through the locking hole 16 and is located directly below the driving rod 9.

[0010] The two sides of the tensile plate 6 are respectively provided with tensile reinforcements 20 which are symmetrical up and down.

[0011] The hanging ring 13 and the prestressed steel cable 7 are connected via an open-body flower basket 21 .

[0012] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: the structure is simple, and the rapid docking of beams and plates can be effectively achieved, thereby improving the connection strength and shear resistance between the connection nodes. After successful docking, no other auxiliary support equipment is required, which greatly simplifies the overall operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a top view of the prefabricated beams and prefabricated panels in the present invention. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0017] See Figure 1-2 This specific embodiment is implemented by adopting the following technical solution, which includes a prefabricated beam 1 and a prefabricated plate 2. The outer side surface of the prefabricated plate 2 extends outward with two rows of mirror-imaged reserved anchor bars 3, and the bottom of the prefabricated beam 1 is reserved with anchor holes 4 that connect with the lower row of anchor bars 3;

[0018] A panel 5 is provided on the outer side surface of the precast beam 1 on the opposite side to the precast panel 2. Several rows of tensile plates 6 arranged equidistantly from each other are welded on the upper top surface of the precast beam 1. The ends of the tensile plates 6 are welded and fixed to the inner side surfaces of the panel 5. A prestressed fixing device is provided between two adjacent tensile plates 6. The precast beam 1 and the precast panel 2 are connected by a prestressed steel cable 7. The two ends of the prestressed steel cable 7 are respectively connected to the prestressed fixing device and the anchor ring 8. Several anchor rings 8 are pre-buried in the top of the precast panel 2.

[0019] The prestressed fixing device includes a driving rod 9, and a connecting rod groove 10 is respectively provided at both ends of the driving rod 9. A driving connecting rod 11 that is rotatably connected to it is provided in each connecting rod groove 10. The two sides of the bottom of the driving connecting rod 11 are rotatably connected to the side wall of the tension plate 6 through a hinge shaft 12. The end of the driving rod 9 opposite to the enclosure 5 is installed with a pull rod 22 that is rotatably connected to it. The end of the pull rod 22 is rotatably connected to the hanging ring 13 through a guide shaft 14. The two ends of the guide shaft 14 are respectively slidably matched with the guide groove 15 provided on the side wall of the tension plate 6.

[0020] The bottom of the driving connecting rod 11 is an eccentric wheel structure with the hinge shaft 12 as the center;

[0021] The upper row of embedded steel bars 3 is placed between the upper top surface of the precast beam 1 and the eccentric wheel of the driving connecting rod 11.

[0022] Locking holes 16 communicating with the rebar hole 4 are reserved on both sides thereof, and a lower row of rebar locking holes 17 communicating with the rebar hole 4 is provided at the bottom between the two locking holes 16. A locking head 18 that slides with the clearance therewith is provided in the lower row of rebar locking holes 17, and a locking rod 19 is fixedly installed on the upper end of the locking head 18. The top of the locking rod 19 passes through the locking hole 16 and is located directly below the driving rod 9.

[0023] The two sides of the tensile plate 6 are respectively provided with tensile reinforcements 20 which are symmetrical up and down.

[0024] The hanging ring 13 and the prestressed steel cable 7 are connected via an open-body flower basket 21 .

[0025] The following further describes the method and principle of using the technical solution in this specific embodiment with reference to the accompanying drawings:

[0026] First, use the hoisting equipment to hoist the prefabricated panel 2 to a horizontal position flush with the prefabricated beam 1. In the process of moving the prefabricated panel 2 closer to the prefabricated beam 1, place the upper row of rebars 3 between the eccentric wheel of the driving connecting rod 11 and the upper top surface of the prefabricated beam 1, and insert the lower row of rebars 3 into the rebar holes 4. Then, hook the hook of the open-body flower basket 21 with the hanging ring 13. Then, use the tool to drive the open-body flower basket 21 to rotate. The driving connecting rod 11 is driven to rotate with the hinge shaft 12 as the center through the hanging ring 13 pull rod 22 and the driving rod 9. When the eccentric vertex of the bottom of the driving connecting rod 11 contacts the hanging ring 13, the position of the upper row of rebars 3 of the entire row is completely locked. In this state, the bottom of the driving rod 9 completely presses the upper end of the locking rod 19, so that the lock head 18 completely locks the lower row of rebars 3.

[0027] Finally, remove the lifting equipment and there is no need to install other auxiliary fixing equipment. The deadweight of the precast panel 2 will only increase the tensile effect between the two. Finally, after the installation is completed, pour concrete of a higher grade on the beam-slab node.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An assembled recycled concrete beam-slab frame structure, comprising a precast beam (1) and a precast slab (2), wherein two rows of mirror-imaged reserved anchor bars (3) extend outward from the outer side surface of the precast slab (2), and anchor holes (4) are reserved at the bottom of the precast beam (1) for docking with the lower row of anchor bars (3); characterized in that A panel (5) is provided on the outer side surface of the precast beam (1) on the side opposite to the precast plate (2); several rows of equidistantly arranged tensile plates (6) are welded on the upper top surface of the precast beam (1); the ends of the tensile plates (6) are welded and fixed to the inner side surface of the panel (5); a prestressed fixing device is provided between two adjacent tensile plates (6); the precast beam (1) and the precast plate (2) are connected by a prestressed steel cable (7); the two ends of the prestressed steel cable (7) are respectively connected to the prestressed fixing device and an anchor ring (8); and several anchor rings (8) are pre-buried in the top of the precast plate (2); The prestressed fixing device comprises a driving rod (9), both ends of which are provided with connecting rod grooves (10), and a driving connecting rod (11) rotatably connected to the driving rod is provided in each connecting rod groove (10), and both sides of the bottom of the driving connecting rod (11) are rotatably connected to the side wall of the tensile plate (6) through a hinge shaft (12), and a pull rod (22) rotatably connected to the driving rod (9) is installed at the end opposite to the enclosure (5), and the end of the pull rod (22) is rotatably connected to the hanging ring (13) through a guide shaft (14), and the two ends of the guide shaft (14) are respectively slidably matched with the guide groove (15) provided on the side wall of the tensile plate (6); The bottom of the driving connecting rod (11) is an eccentric wheel structure with the hinge shaft (12) as the center; The upper row of embedded steel bars (3) are placed between the upper top surface of the prefabricated beam (1) and the eccentric wheel of the driving connecting rod (11); The hanging ring (13) and the prestressed steel cable (7) are butt-jointed via an open-body flower basket (21).

2. The assembled recycled concrete beam-slab frame structure according to claim 1 is characterized in that Locking holes (16) communicating with the anchor bolt holes (4) are respectively reserved on both sides of the anchor bolt holes (4); a lower row anchor bolt locking hole (17) communicating with the anchor bolt holes (4) is provided at the bottom between the two locking holes (16); a locking head (18) slidingly matched with the lower row anchor bolt locking hole (17) is provided in the lower row anchor bolt locking hole (17); a locking rod (19) is fixedly installed on the upper end of the locking head (18); the top of the locking rod (19) passes through the locking hole (16) and is located directly below the driving rod (9).

3. The assembled recycled concrete beam-slab frame structure according to claim 1 is characterized in that Both sides of the tensile plate (6) are respectively provided with tensile reinforcements (20) that are symmetrical up and down.

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