CN216615463U

CN216615463U - Steel-concrete hybrid beam structure suitable for self-compaction concrete pouring

Info

Publication number: CN216615463U
Application number: CN202123414317.4U
Authority: CN
Inventors: 徐永惠; 胡加恩
Original assignee: Zhejiang Groupway Group Co ltd
Current assignee: Zhejiang Groupway Group Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-27
Anticipated expiration: 2031-12-30

Abstract

The application discloses steel-concrete mixed beam structure suitable for self-compaction concrete placement belongs to bridge engineering technical field, including I-shaped steel, precast concrete board and two bar cavity spares, I-shaped steel sets up the lower extreme department at precast concrete board, two bar cavity spares symmetry vertically set up the upper end left and right sides department at I-shaped steel, the equal vertical mounting hole of having seted up a plurality of evenly distributed of the upper end of I-shaped steel and the position department of corresponding of two bar cavity spares, the inside of a plurality of mounting holes all is provided with vertical screw rod, the upper and lower both ends of a plurality of screw rods all extend to the outside of mounting hole, the upper end of a plurality of screw rods all with the lower extreme fixed connection of the bar cavity spare that corresponds. The application effectively improves the binding force between the prefabricated connecting piece and the prefabricated concrete slab, and the reliability is higher; the nut is convenient to limit, and the condition that the nut is loosened after long-time vibration is reduced.

Description

Steel-concrete hybrid beam structure suitable for self-compaction concrete pouring

Technical Field

The application relates to the technical field of bridge engineering, in particular to a steel-concrete mixed beam structure suitable for self-compacting concrete pouring.

Background

The steel-concrete composite beam is a novel structural type developed on the basis of steel structures and concrete structures. The shear connectors (studs, channel steel, bent ribs and the like) are arranged between the steel beam and the concrete flange plate to resist the lifting and relative sliding of the steel beam and the concrete flange plate at the interface, so that the steel beam and the concrete flange plate are integrated and work together, energy is saved, the environment is protected, and the fabricated structure is convenient to build.

Self-compacting concrete refers to concrete which can flow and be compact under the action of self gravity, can completely fill a template even if compact steel bars exist, and simultaneously obtains good homogeneity without additional vibration.

The existing steel-concrete mixed beam structure only adopts a screw rod as a concrete precast connecting piece, has small bonding force with a precast concrete plate and poor reliability, and therefore, the steel-concrete mixed beam structure suitable for self-compacting concrete pouring is provided.

SUMMERY OF THE UTILITY MODEL

The application provides a steel-concrete hybrid beam structure suitable for self-compaction concrete placement to solve the current bridge engineering who proposes in the above-mentioned background art and only adopt the screw rod as precast concrete connecting piece, it is less with precast concrete board's cohesion, the relatively poor problem of reliability.

In order to achieve the purpose, the following technical scheme is adopted in the application:

a steel-concrete mixed beam structure suitable for self-compacting concrete pouring comprises I-shaped steel, a precast concrete plate and two strip-shaped hollow parts, wherein the I-shaped steel is arranged at the lower end of the precast concrete plate, the two strip-shaped hollow parts are symmetrically and longitudinally arranged at the left side and the right side of the upper end of the I-shaped steel, a plurality of uniformly distributed mounting holes are vertically formed in the positions, corresponding to the two strip-shaped hollow parts, of the upper end of the I-shaped steel, vertical screw rods are arranged inside the mounting holes, the upper ends and the lower ends of the screw rods extend to the outside of the mounting holes, the upper ends of the screw rods are fixedly connected with the lower ends of the corresponding strip-shaped hollow parts, the two strip-shaped hollow parts are pre-embedded inside the precast concrete plate, nuts are sleeved on the lower sides of the rod walls of the screw rods in a threaded manner, and annular grooves matched with the nuts are formed in the lower side hole walls of the mounting holes, it is a plurality of the equal level of one side cell wall that the annular groove deviates from mutually has seted up the circular slot, and is a plurality of the equal sliding connection in inside of circular slot has the metal pole, and is a plurality of the one end that the metal pole is relative all extends to the outside of circular slot, and is a plurality of the draw-in groove with metal pole matched with, a plurality of is all seted up to the outer wall of nut the equal fixedly connected with first magnet of tank bottom portion of draw-in groove.

As a preferred embodiment, a plurality of bar holes have all been seted up to the lower side cell wall of circular slot, and a plurality of one side that the inside in bar hole is close to corresponding screw rod all is provided with vertical push rod, and is a plurality of the upper and lower both ends of push rod all extend to the outside in bar hole, and are a plurality of the upper end of push rod all with the pole wall fixed connection of metal pole.

As a preferred embodiment, the lower ends of the push rods are fixedly sleeved with anti-slip sleeves.

In a preferred embodiment, the anti-slip sleeves are all corrosion-resistant rubber sleeves.

In a preferred embodiment, a second magnet is fixedly connected to each of the groove bottoms of the plurality of circular grooves.

As a preferred embodiment, the upper ends of the two strip-shaped hollow pieces are opened.

In a preferred embodiment, the cross section of each of the two bar-shaped hollow members is an inverted trapezoid.

As a preferred embodiment, the side walls of the two bar-shaped hollow parts are respectively provided with a plurality of through holes which are uniformly distributed.

The beneficial effect of this application:

according to the steel-concrete mixed beam structure suitable for self-compacting concrete pouring, the binding force between the prefabricated connecting piece and the prefabricated concrete plate is effectively improved through the strip-shaped hollow pieces, the screw rods and the nuts, and the reliability is high;

this steel-concrete hybrid beam structure suitable for self-compaction concrete placement is convenient for carry on spacingly to the nut through nut, metal pole, first magnet, push rod, antiskid cover and the second magnet that are equipped with, has reduced the condition emergence that the nut takes place to become flexible after long-time vibration.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Reference numbers in the figures: 1. i-shaped steel; 2. prefabricating a concrete slab; 3. a strip-shaped hollow member; 4. a through hole; 5. a screw; 6. a metal rod; 7. an anti-slip sleeve; 8. a push rod; 9. a second magnet; 10. a first magnet; 11. mounting holes; 12. a nut; 13. an annular groove.

Detailed Description

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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Referring to fig. 1, a steel-concrete hybrid beam structure suitable for self-compacting concrete casting includes an i-shaped steel 1, a precast concrete slab 2, and two bar-shaped hollow members 3, wherein the i-shaped steel 1 is disposed at a lower end of the precast concrete slab 2, and the two bar-shaped hollow members 3 are symmetrically and longitudinally disposed at left and right sides of an upper end of the i-shaped steel 1.

Referring to fig. 1 and 2, the equal vertical mounting hole of seting up a plurality of evenly distributed of the upper end of I-shaped steel 1 and the position department of correspondence of two bar-shaped hollow members 3, the inside of a plurality of mounting holes all is provided with vertical screw rod 5, the upper and lower both ends of a plurality of screw rods 5 all extend to the outside of mounting hole, the upper end of a plurality of screw rods 5 all with the lower extreme fixed connection of the bar-shaped hollow member 3 that corresponds, two bar-shaped hollow members 3 all pre-buried setting inside precast concrete board 2, the opening has all been seted up to the upper end of two bar-shaped hollow members 3. The openings can facilitate concrete pouring inside the strip-shaped hollow members 3. The cross sections of the two strip-shaped hollow parts 3 are both inverted trapezoids. The inverted trapezoidal shape makes the connection between the bar-shaped hollow member 3 and the precast concrete panel 2 more secure. A plurality of evenly distributed's through-hole has all been seted up to the lateral wall of two bar hollow member 3, and the through-hole has improved the structural strength between bar hollow member 3 and precast concrete board 2.

Referring to fig. 1 and 2, the equal screw thread of pole wall downside of a plurality of screw rods 5 has cup jointed nut 12, the downside pore wall of a plurality of mounting holes has all been seted up with nut 12 matched with ring channel, the circular slot has been seted up to the equal level of one side cell wall that a plurality of circular slots deviate from mutually, the equal sliding connection in inside of a plurality of circular slots has metal pole 6, metal pole 6 is the iron set, the one end that a plurality of metal poles 6 are relative all extends to the outside of circular slot, the draw-in groove with 6 matched with of metal pole has all been seted up to the outer wall of a plurality of nuts 12, the equal fixedly connected with first magnet 10 in tank bottom of a plurality of draw-in grooves. The first magnet 10 can reduce the occurrence of the situation that the metal rod 6 is separated from the clamping groove by itself.

Referring to fig. 1 and 2, the lower side cell wall of a plurality of circular slots has all been seted up the bar hole, and one side that the inside in a plurality of bar holes is close to corresponding screw rod 5 all is provided with vertical push rod 8. The push rod 8 facilitates pushing the metal rod 6. The upper and lower both ends of a plurality of push rods 8 all extend to the outside in bar hole, the upper end of a plurality of push rods 8 all with the pole wall fixed connection of metal pole 6, the lower extreme of a plurality of push rods 8 is all fixed to have cup jointed antiskid cover 7, antiskid cover 7 is convenient for promote push rod 8. The anti-skid sleeves 7 are all corrosion-resistant rubber sleeves. The service life of the corrosion-resistant rubber sleeve is long. The equal fixedly connected with second magnet 9 in the tank bottom of a plurality of circular slots, second magnet 9 can make metal pole 6 fixed with the cell wall of circular slot, is convenient for rotate nut 12.

The working principle is as follows: placing the precast concrete plate 2 on the upper end of the I-shaped steel 1 from the top by using a crane, respectively inserting the plurality of screw rods 5 into the corresponding mounting holes 11, screwing the plurality of nuts 12 and the plurality of screw rods 5, corresponding the plurality of metal rods 6 to the clamping grooves at the moment, pushing the anti-skidding sleeve 7 to push the push rod 8, driving the metal rods 6 to be clamped into the clamping grooves by the push rod 8, and attracting the metal rods 6 and the first magnet 10.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The above description is only for the preferred embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present application in the scope of the present application.

Claims

1. A steel-concrete mixed beam structure suitable for self-compacting concrete pouring comprises an I-shaped steel (1), a precast concrete plate (2) and two strip-shaped hollow parts (3), and is characterized in that the I-shaped steel (1) is arranged at the lower end of the precast concrete plate (2), the two strip-shaped hollow parts (3) are symmetrically and longitudinally arranged at the left side and the right side of the upper end of the I-shaped steel (1), a plurality of uniformly distributed mounting holes are vertically formed in the positions corresponding to the upper end of the I-shaped steel (1) and the two strip-shaped hollow parts (3), vertical screw rods (5) are arranged in the mounting holes, the upper ends and the lower ends of the screw rods (5) extend to the outer parts of the mounting holes, the upper ends of the screw rods (5) are fixedly connected with the lower ends of the corresponding strip-shaped hollow parts (3), the two strip-shaped hollow parts (3) are pre-buried and arranged in the precast concrete plate (2), it is a plurality of nut (12) have been cup jointed to the equal screw thread of pole wall downside of screw rod (5), it is a plurality of the downside pore wall of mounting hole all seted up with nut (12) matched with ring channel, it is a plurality of the equal level of one side cell wall that the ring channel deviates from mutually has seted up the circular slot, and is a plurality of the equal sliding connection in inside of circular slot has metal pole (6), and is a plurality of the one end that metal pole (6) is relative all extends to the outside of circular slot, and is a plurality of the draw-in groove with metal pole (6) matched with is all seted up to the outer wall of nut (12), and is a plurality of the equal fixedly connected with first magnet (10) in tank bottom of draw-in groove.

2. The steel-concrete mixed beam structure suitable for self-compacting concrete pouring according to claim 1, wherein a plurality of strip-shaped holes are formed in the lower side wall of each circular groove, a vertical push rod (8) is arranged on one side, close to the corresponding screw rod (5), of the inner portion of each strip-shaped hole, the upper end and the lower end of each push rod (8) extend to the outer portion of each strip-shaped hole, and the upper end of each push rod (8) is fixedly connected with the rod wall of the metal rod (6).

3. A steel-concrete hybrid beam structure suitable for self-compacting concrete casting according to claim 2, characterized in that an anti-slip cover (7) is fixedly sleeved on the lower ends of a plurality of said push rods (8).

4. A steel-concrete composite beam structure adapted for self-compacting concrete casting according to claim 3, characterized in that said slip-resistant sleeves (7) are all corrosion-resistant rubber sleeves.

5. A steel-concrete composite beam structure adapted for self-compacting concrete casting according to claim 1, characterized in that a second magnet (9) is fixedly connected to the bottom of each of the plurality of circular grooves.

6. A steel-concrete hybrid beam structure suitable for self-compacting concrete casting according to claim 1, characterized in that the upper ends of both said strip-shaped hollow members (3) are opened.

7. A steel-concrete composite beam structure suitable for self-compacting concrete casting according to claim 1, characterized in that both of said strip-shaped hollow members (3) have an inverted trapezoidal cross section.

8. A steel-concrete hybrid beam structure suitable for self-compacting concrete casting according to claim 1, characterized in that the side walls of both said strip-shaped hollow members (3) are provided with a plurality of uniformly distributed through holes.