Fabricated hollow slab beam

Abstract

The utility model relates to the technical field of bridge structures, in particular to an assembly type hollow slab beam which comprises an assembly type hollow slab beam body, a beam slab cavity is formed in the assembly type hollow slab beam body, and butt joint blocks of trapezoid structures are fixedly connected to the two sides of the surface of the assembly type hollow slab beam body. During butt joint, the connecting reinforcing rib on one assembly type hollow slab beam body is clamped in the clamping groove formed in the other assembly type hollow slab beam body, the butt joint threaded sleeve is in threaded connection with the fixing screw rod, and therefore butt joint between the connecting reinforcing rib and the fixing screw rod is achieved, concrete pouring is conducted, and the assembly type hollow slab beam is formed. According to the fabricated hollow slab beam, the connecting reinforcing ribs are installed between the two adjacent fabricated hollow slab beam bodies, the connecting strength between the two fabricated hollow slab beam bodies can be further improved, the fabricated hollow slab beam bodies can be connected into a whole, and therefore the load bearing capacity of the fabricated hollow slab beam bodies can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an assembly type hollow slab beam and belongs to the technical field of bridge structure. BACKGROUND

[0002] The assembly type hollow slab beam has simple structure and convenient construction, has the advantages of small building height, convenience in making into skew bridge and curved bridge, standardization design, factory mechanized construction, small hoisting weight and the like, and is widely applied in small and medium span bridges. In recent years, a large number of assembly type concrete slab beams have been built in China, and the bridges with a span of 20m basically adopt the structure. At present, the assembly type hollow slab plates are transversely connected by hinge joints, and each hollow slab participates in stress under external load. The connection of the hinge joint is the key of transverse force transmission of the slab beam, and the actual investigation on the built assembly type concrete simply supported slab bridge finds that the damage of the hinge joint is common, such as cracking, damage and spalling of the hinge joint concrete and the fracture of hinge joint structural reinforcement, the damage of the hinge joint increases the load borne by part of the slab beam, reduces the integrity of the assembly type simply supported slab bridge and seriously threatens the safety of the slab beam bridge.

[0003] At present, the existing Chinese patent with the publication number CN201942993U discloses a prestressed hollow slab beam which is formed by reinforcing steel and concrete pouring and comprises a beam bottom plate, a beam top plate and two beam side plates, the beam bottom plate, the beam top plate and the two beam side plates form a cavity, and the beam bottom plate is provided with a plurality of convex edges on one side of the cavity. The prestressed hollow slab beam improves the strength of the beam bottom plate by arranging a plurality of convex edges on the beam bottom plate, thereby avoiding longitudinal cracks in the beam bottom plate. However, the inventor finds that the connection strength between the concrete in the hinge joint of each slab beam and the slab beam is weak during the assembly process of the slab beam, thereby affecting the transverse connection of the slab beam and the durability of the slab beam. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of assembly type hollow slab beams, and the utility model structure is simple, by joining connection reinforcing bar and longitudinal reinforcing bar and the cooperation between reinforcing plate, it is helpful to increase the strength between two assembly type hollow slab beam bodies, it is helpful to improve the ability of slab beam body to bear load, to solve the problem raised in above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The utility model relates to a prefabricated hollow slab beam, including prefabricated hollow slab beam body, the inside of prefabricated hollow slab beam body is opened the beam slab cavity, the surface both sides of prefabricated hollow slab beam body are fixedly connected with the butt joint block of trapezoidal structure, the surface of prefabricated hollow slab beam body one side is fixedly connected with a plurality of equal interval arrangement setting's connecting reinforcing rib above one butt joint block position, the one end of connecting reinforcing rib away from prefabricated hollow slab beam body is equipped with the limit disc, the surface sliding connection has the butt joint screw bushing of connecting reinforcing rib close to limit disc one end, the surface of prefabricated hollow slab beam body away from connecting reinforcing rib one side and located above another butt joint block is equipped with a plurality of clamping slots, the clamping slot number corresponds, the fixed screw rod is fixedly connected with the inner wall of the clamping slot of the surface of prefabricated hollow slab beam body, and the fixed screw rod is fixedly connected with the inner wall of the clamping slot of the surface of prefabricated hollow slab beam body, and one of the fixed screw rod is fixedly connected with the fixed screw rod of the surface of prefabricated hollow slab beam body, and the fixed screw rod is fixedly connected with the fixed screw rod of the surface of prefabricated hollow slab beam body.

[0007] Further, the opposite side surfaces of the two butt joints are fixedly connected with sealing pads.

[0008] Further, the surface of the connecting reinforcing rib is provided with a through hole, and a plurality of through holes are on the same horizontal straight line.

[0009] Further, the connecting reinforcing rib and the longitudinal reinforcing rib are arranged in an intersecting structure.

[0010] Further, the surface of the prefabricated hollow slab beam body is symmetrically provided with two groups of screw holes, a plurality of reinforcing plates are arranged above the butt joint position of the two prefabricated hollow slab beam bodies, holes are arranged at the two ends of the reinforcing plates, and fixed bolts are inserted into the holes.

[0011] Further, a plurality of drainage holes are arranged on the inner wall bottom surface of the beam slab cavity of the prefabricated hollow slab beam body.

[0012] The utility model has the advantages that:

[0013] (One), the utility model discloses a butt -joint block is installed on the both sides surface of the assembly type hollow slab beam body, the side surface of two butt -joint blocks is contacted and installs the sealing washer, can improve the butt -joint sealing property between two assembly type hollow slab beam bodies when butt -joint, and the connecting reinforcing rib on one of assembly type hollow slab beam bodies is clamped in the clamping slot of the other assembly type hollow slab beam body through when butt -joint, and the butt -joint screw sleeve of connecting reinforcing rib one end is rotated, and the butt -joint screw sleeve is connected between fixed screw rod, thereby realizing the butt -joint between connecting reinforcing rib and fixed screw rod, and carrying out concrete pouring, through installing connecting reinforcing rib between two adjacent assembly type hollow slab beam bodies, can further increase the connecting strength between two assembly type hollow slab beam bodies, help to connect the assembly type hollow slab beam body into a whole, thereby help to improve the ability of assembly type hollow slab beam body to bear load.

[0014] (Two), the utility model discloses a through -hole is seted up on the surface of connecting reinforcing rib, and longitudinal reinforcing rib is penetrated in order to multiple connecting reinforcing rib, make the connecting strength between two adjacent assembly type hollow slab beam bodies more firm, improve the service life of beam slab, and further improve the strength between adjacent beam slab, and cooperate and install multiple reinforcing plates on the upper surface of slab beam, can further improve the strength between two slab beams. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with the specific embodiment of the utility model, and do not constitute the limitation to the utility model.

[0016] Figure 1 It is a structure schematic view of the utility model one kind assembly type hollow slab beam;

[0017] Figure 2 It is the front view of the utility model one kind assembly type hollow slab beam body in the utility model one kind assembly type hollow slab beam;

[0018] Figure 3 It is the overhead view of the utility model one kind assembly type hollow slab beam body butt -joint structure in the utility model one kind assembly type hollow slab beam;

[0019] Figure 4 It is the utility model one kind assembly type hollow slab beam Figure 2 The partial sectional view of the utility model one kind assembly type hollow slab beam body in;

[0020] Figure 5 It is the utility model one kind assembly type hollow slab beam Figure 4 The enlarged view of the structure of A in the utility model one kind assembly type hollow slab beam

[0021] The figure label: 1, the assembled hollow slab beam body; 2, the beam slab cavity; 3, the butt joint block; 4, the connecting reinforcing rib; 5, the limiting disc; 6, the butt joint screw sleeve; 7, the clamping groove; 8, the fixed screw rod; 9, the through hole; 10, the longitudinal reinforcing rib; 11, the pouring baffle; 12, the nut; 13, the reinforcing plate; 14, the fixed bolt; 15, the screw hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment 1, please refer to Figures 1-5 The present application provides a technical solution:

[0024] An assembled hollow slab beam, comprising an assembled hollow slab beam body 1, a beam slab cavity 2 is formed in the inside of the assembled hollow slab beam body 1, and a butt joint block 3 of trapezoidal structure is fixedly connected to the surface of the assembled hollow slab beam body 1 on both sides; a plurality of connecting reinforcing ribs 4 arranged at equal intervals are fixedly connected to the surface of the assembled hollow slab beam body 1 on one side above one of the butt joint blocks 3; a limiting disc 5 is installed at the end of the connecting reinforcing rib 4 away from the assembled hollow slab beam body 1; a butt joint screw sleeve 6 is slidingly connected to the surface of the end of the connecting reinforcing rib 4 close to the limiting disc 5; a plurality of clamping grooves 7 are formed in the surface of the assembled hollow slab beam body 1 on the side away from the connecting reinforcing rib 4 and above the other butt joint block 3, and the number of the clamping grooves 7 corresponds to that of the connecting reinforcing ribs 4; a fixed screw rod 8 is fixedly connected to the inner wall of each of the clamping grooves 7 formed in the surface of the assembled hollow slab beam body 1; one of the connecting reinforcing ribs 4 fixedly installed on one of the assembled hollow slab beam bodies 1 is clamped in the clamping groove 7 formed in the surface of the other assembled hollow slab beam body 1; and the butt joint screw sleeve 6 is threadedly connected to the surface of the fixed screw rod 8.

[0025] In the embodiment, the butt joint blocks 3 are mounted on the surfaces of the two assembled hollow slab beam bodies 1, the side surfaces of the two butt joint blocks 3 are in contact with each other and the sealing gaskets are mounted on the side surfaces, so that the sealing performance of the two assembled hollow slab beam bodies 1 is improved when the two assembled hollow slab beam bodies 1 are butted. When the two assembled hollow slab beam bodies 1 are butted, the connecting reinforcing ribs 4 on one of the two assembled hollow slab beam bodies 1 are clamped in the clamping grooves 7 formed on the other assembled hollow slab beam body 1, the butt joint screw sleeves 6 at one end of the connecting reinforcing ribs 4 are rotated, the butt joint screw sleeves 6 are screwed with the fixed screw rods 8, the butt joint of the connecting reinforcing ribs 4 and the fixed screw rods 8 is achieved, and the concrete is poured. The connecting reinforcing ribs 4 are mounted between the two adjacent assembled hollow slab beam bodies 1, so that the connecting strength between the two assembled hollow slab beam bodies 1 is further improved, the two assembled hollow slab beam bodies 1 are connected as a whole, and the load bearing capacity of the assembled hollow slab beam body 1 is improved.

[0026] Embodiment 2, please refer to Figure 1 , Figure 3 and Figure 4 The difference between the embodiment and embodiment 1 is that the connecting reinforcing ribs 4 are provided with through holes 9, the multiple through holes 9 are on the same horizontal straight line, the longitudinal reinforcing ribs 10 are inserted into the through holes 9 formed on the surfaces of the connecting reinforcing ribs 4, the longitudinal reinforcing ribs 10 sequentially penetrate the multiple connecting reinforcing ribs 4, the pouring baffles 11 are arranged at the two ends of the longitudinal reinforcing ribs 10, the two ends of the longitudinal reinforcing ribs 10 penetrate the two pouring baffles 11 respectively, and the two ends are connected with the nuts 12 arranged outside the pouring baffles 11. The pouring baffles 11 are fixed at the two ends of the longitudinal reinforcing ribs 10 through the nuts 12.

[0027] Specifically, as shown in Figures 1-5 , the connecting reinforcing ribs 4 and the longitudinal reinforcing ribs 10 are arranged in a cross structure, the steel bars arranged in a staggered manner are arranged between the two assembled hollow slab beam bodies 1 and above the connecting reinforcing ribs 4 and the longitudinal reinforcing ribs 10, two groups of screw holes 15 are symmetrically formed on the surface of the assembled hollow slab beam body 1, multiple reinforcing plates 13 are arranged above the butt joint position of the two assembled hollow slab beam bodies 1, the holes formed at the two ends of the reinforcing plates 13 are inserted with the fixed bolts 14, one end of the fixed bolts 14 penetrates the reinforcing plates 13 and is screwed into the screw holes 15 formed on the surface of the assembled hollow slab beam body 1, and the reinforcing plates 13 are mounted between the two assembled hollow slab beam bodies 1 through the fixed bolts 14 and the screw holes 15.

[0028] In the embodiment, the through holes 9 are formed on the surfaces of the connecting reinforcing ribs 4, the longitudinal reinforcing ribs 10 sequentially penetrate the multiple connecting reinforcing ribs 4, the connecting strength between the two adjacent assembled hollow slab beam bodies 1 is more firm, the service life of the beam slab is improved, the strength of the beam slab between the adjacent beam slabs is further improved, and the strength between the two beam slabs is further improved by arranging the multiple reinforcing plates 13 on the upper surfaces of the beam slabs.

[0029] It should be noted that the beam plate cavity (2) inside the assembled hollow slab beam body 1 is provided with a plurality of drainage holes on the inner wall bottom surface, the setting of the drainage holes can timely drain the accumulated water in the beam cavity of the hollow slab beam, improve the durability of the structure; at the same time, the drainage holes help to enhance the ventilation and heat exchange speed inside and outside the hollow slab beam, which can greatly reduce the temperature difference inside and outside the hollow slab beam and prevent the slab beam from cracking.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fabricated hollow slab beam comprising a fabricated hollow slab beam body (1), characterized in that: The inside of the assembled hollow slab beam body (1) is provided with a beam slab cavity (2), both sides of the surface of the assembled hollow slab beam body (1) are fixedly connected with a ladder-shaped butt joint block (3), a plurality of connecting reinforcing ribs (4) arranged at equal intervals are fixedly connected above one butt joint block (3) on one side surface of the assembled hollow slab beam body (1), a limiting disc (5) is installed at the end of the connecting reinforcing rib (4) away from the assembled hollow slab beam body (1), a butt joint screw sleeve (6) is slidably connected to the end surface of the connecting reinforcing rib (4) close to the limiting disc (5), a plurality of clamping grooves (7) are formed on the surface of the side of the assembled hollow slab beam body (1) away from the connecting reinforcing rib (4) and above the other butt joint block (3), the number of the clamping grooves (7) corresponds to that of the connecting reinforcing ribs (4), a fixing screw rod (8) is fixedly connected to the inner wall of each clamping groove (7) formed on the surface of the assembled hollow slab beam body (1), the connecting reinforcing rib (4) fixedly installed on one assembled hollow slab beam body (1) is clamped in the clamping groove (7) formed on the surface of the other assembled hollow slab beam body (1), and the butt joint screw sleeve (6) is threadedly connected to the surface of the fixing screw rod (8).

2. The prefabricated hollow slab beam according to claim 1, characterized in that: Both sides of the surface of the butt joint block (3) are fixedly connected with a sealing gasket.

3. The prefabricated hollow slab beam according to claim 1, characterized in that: The surface of the connecting reinforcing rib (4) is provided with a through hole (9), a plurality of through holes (9) are arranged on the same horizontal straight line, a longitudinal reinforcing rib (10) is inserted into the through hole (9) formed on the surface of the connecting reinforcing rib (4), the longitudinal reinforcing rib (10) penetrates the plurality of connecting reinforcing ribs (4) in sequence, pouring baffles (11) are arranged at both ends of the longitudinal reinforcing rib (10), the longitudinal reinforcing rib (10) penetrates the two pouring baffles (11) at both ends and is connected with nuts (12) arranged outside the pouring baffles (11), and the pouring baffles (11) are fixed at both ends of the longitudinal reinforcing rib (10) through the nuts (12).

4. The prefabricated hollow slab beam according to claim 1, characterized in that: The connecting reinforcing rib (4) and the longitudinal reinforcing rib (10) are arranged in an intersecting structure, and steel bars arranged in a staggered manner are arranged above the connecting reinforcing rib (4) and the longitudinal reinforcing rib (10) between the two assembled hollow slab beam bodies (1).

5. The prefabricated hollow slab beam according to claim 1, characterized in that: Two groups of screw holes (15) are symmetrically formed on the surface of the assembled hollow slab beam body (1), a plurality of reinforcing plates (13) are arranged above the butt joint position of the two assembled hollow slab beam bodies (1), a fixing bolt (14) is inserted into the hole formed at both ends of the reinforcing plate (13), one end of the fixing bolt (14) penetrates the reinforcing plate (13) and is threadedly connected into the screw hole (15) formed on the surface of the assembled hollow slab beam body (1), and the reinforcing plate (13) is installed between the two assembled hollow slab beam bodies (1) through the fixing bolt (14) and the screw hole (15).

6. The prefabricated hollow slab beam according to claim 1, characterized in that: A plurality of drainage holes are formed in the inner wall bottom surface of the beam slab cavity (2) formed in the assembled hollow slab beam body (1).

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