CN213897802U

CN213897802U - Precast beam with dense rib plate shelving notch

Info

Publication number: CN213897802U
Application number: CN202022777855.9U
Authority: CN
Inventors: 杨峰; 俞锋波; 耿俊迪
Original assignee: Ningbo Excellent Building Technology Co ltd
Current assignee: Ningbo Excellent Building Technology Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-06
Anticipated expiration: 2030-11-26

Abstract

The precast beam with the dense rib plate shelving gaps comprises a concrete beam body, a main reinforcement and stirrups, wherein a plurality of shelving gaps are longitudinally arranged on the upper portion of at least one side of the concrete beam body, the spacing between the shelving gaps is 300-600 mm, the shelving gaps are inverted trapezoidal in size, the main reinforcement is a common steel bar or a prestressed steel strand, the main reinforcement is embedded in the lower portion of the beam body, the stirrups comprise shear resistant stirrups and structural stirrups, the structural stirrups are embedded in the beam body at the lower portions of the shelving gaps, the shear resistant stirrups are arranged in the beam along the inner sides of the shelving gaps, and the shear resistant stirrups are exposed to the upper surface of the beam body at a certain height along the inner sides of the shelving gaps. This precast beam can design into continuous board with the dense floor that corresponds to shelve, and the wholeness is good, and shelve the breach and adopt the one-time pouring shaping of design mould, and construction quality is good.

Description

Precast beam with dense rib plate shelving notch

Technical Field

The utility model relates to a concrete prefabricated component especially relates to a precast beam with breach is shelved to dense floor.

Background

The traditional precast beam usually adopts the method of 'basket beam' with beam ear to solve the problem of placing the floor slab, the precast beam construction process is complex, the floor slab placed on the ear can only be designed according to a simple support plate, the steel consumption is large, and the stability of the beam construction stage is poor. If the floor slab adopts a precast concrete multi-ribbed floor slab, the method of directly placing the multi-ribbed floor slab on the beam lugs has the problem of difficult slurry leakage in beam slab joints, and the precast beam with the multi-ribbed floor slab placing notch and simple construction has not been reported.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome above-mentioned prior art not enough, provide a precast beam with notch, the construction is simple are shelved to close rib floor.

According to the utility model provides a pair of precast beam with breach is shelved to dense floor, including the concrete roof beam body, main muscle and stirrup, the at least one side upper portion of the concrete roof beam body is along vertically being equipped with a plurality of breachs of shelving, it is 300mm ~ 600mm to shelve the breach interval, shelve under the breach big end down and be down trapezoidal, the main muscle is ordinary reinforcing bar or prestressing wires, the main muscle bury underground in the roof beam body lower part, the stirrup is including shearing stirrup and structure stirrup, the structure stirrup bury underground in shelve the roof beam body of breach lower part, the stirrup that shears is in follow in the roof beam shelve the breach inboard and arrange, the stirrup that shears is followed shelve the breach inboard to the roof beam body upper surface exposes the take.

According to the utility model provides a pair of precast beam with dense floor shelves breach still has following attached technical characteristic:

the shelving depth of the shelving notch is 50-150 mm.

The inner side of the beam concrete side between the placing notches is deviated from the side surface of the beam by 4-10 mm.

The vertical height of the shelving gap is 100-300 mm.

The two ends of the beam body are provided with placing and picking heads which extend out of the beam end for a certain distance.

The main reinforcement extends out of the beam end for a certain length, and the end part of the exposed main reinforcement is provided with a hook or connected with an anchor plate.

According to the utility model provides a pair of precast beam with dense floor shelves breach compares with prior art and has following advantage:

1. by adopting the precast beam, the dense rib plates which are correspondingly placed can be designed into continuous plates, so that the steel consumption of the laminated slab is reduced, and the integrity is good.

2. The prefabricated beam with the placing notch can be poured out at one time by adopting the shaping template, and the manufacturing is convenient.

3. The dense rib plate has large laying area in the construction stage, the stability of the beam and the plate is good, and the construction is safe.

Drawings

Fig. 1 is a perspective view of the precast beam of the present invention.

Fig. 2 is a sectional view of the gap of the precast beam.

Fig. 3 is a cross-sectional view of the non-laying gap of the precast beam of the present invention.

Figure 4 is the utility model discloses prefabricated secondary beam schematic diagram.

FIG. 5 is a perspective view of the exposed main reinforcement end of the precast beam of the present invention having anchor plates

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 5, in the embodiment of a precast beam with dense rib board shelves breach provided by the utility model, including concrete roof beam body 1, main muscle 2 and stirrup 3, concrete roof beam body 1 at least one side upper portion vertically is equipped with a plurality of shelves breach 11, it is 300mm ~ 600mm to shelve breach 11 interval, shelve breach 11 big-end-up and be down trapezoidal, main muscle 2 is ordinary reinforcing bar or prestressing strand wires, main muscle 2 bury underground in 1 lower part of roof beam body, stirrup 3 includes shear resistant stirrup 31 and structure stirrup 32, structure stirrup 32 bury underground in shelve the roof beam body 1 of breach 11 lower part, shear resistant stirrup 31 is in the roof beam is interior along shelve breach 11 inboard and arrange, shear resistant stirrup 31 is along shelve 11 inboard stretches out the roof beam body 1 upper surface and exposes a certain height. The placing gap is used for placing the corresponding dense rib plate, the dense rib plate is embedded into the placing gap 11, the installation is convenient, the slurry leakage is avoided, and the overall performance is good after the post-pouring laminated layer is poured.

Referring to fig. 1 to 5, in the embodiment of the precast beam with dense rib plate shelving notch provided by the present invention, the shelving depth of the shelving notch 11 is 50-150 mm, the inner side of the beam concrete side between the shelving notches 11 is 4-10 mm from the side, and the vertical height of the shelving notch 11 is 100-300 mm. The laying depth is beneficial to the safety of the dense rib plate in the construction stage, the inner part of the precast beam is inclined to 4-10 mm, and the distance can meet the requirement of the thickness of the steel plate under the condition of ensuring the rigidity and the strength when the laying notch forming die is demoulded.

Referring to fig. 4, in the embodiment of the precast beam with dense rib plate placing gap provided by the present invention, two ends of the concrete beam body 1 are provided with placing heads 12, and the placing heads 12 extend out of the beam end for a certain distance. The precast beam with the placing pick head 12 is a secondary beam and is used for placing on the main beam.

Referring to fig. 1 and 5, in an embodiment of the precast beam with the dense rib slab placement gap according to the present invention, the main rib 2 extends out of the beam end by a certain length, and the end of the exposed main rib 2 is provided with a hook 21 or is connected with an anchor plate 22. The hooks 21 or the anchor plates 22 enable the beams and the columns to be connected into a whole to form a rigid connection node.

In the present invention, all the "certain distance and certain height" refer to the length necessary for meeting the design requirement, that is, the length necessary for adapting to the connection and strength requirement, and this length is clear to those skilled in the art and can be set as required.

Claims

1. The utility model provides a precast beam with breach is shelved to dense floor, includes concrete roof beam body, main muscle and stirrup, its characterized in that:

a plurality of placing notches are arranged on the upper part of at least one side of the concrete beam body along the longitudinal direction, the spacing between the placing notches is 300-600 mm, the lower part of each placing notch is small, the upper part of each placing notch is big and inverted trapezoid,

the main reinforcement is a common steel bar or a prestressed steel strand, the main reinforcement is embedded at the lower part of the beam body,

the hoop comprises a shear-resistant hoop and a construction hoop, the construction hoop is embedded in the beam body at the lower part of the shelving gap, the shear-resistant hoop is arranged in the beam along the inner side of the shelving gap, and the shear-resistant hoop is exposed to a certain height from the inner side of the shelving gap to the upper surface of the beam body.

2. The precast beam with dense rib floor resting notches according to claim 1, characterized in that the resting depth of the resting notches is 50-150 mm.

3. The precast beam with dense rib plate resting notches according to claim 1, characterized in that the concrete side edges of the beam between the resting notches are offset from the side surfaces of the beam by 4mm to 10 mm.

4. The precast beam with dense rib slab resting notches according to claim 1, characterized in that the vertical height of the resting notch is 100-300 mm.

5. The precast beam with dense rib plate resting notches as claimed in claim 1, wherein the beam body has resting pick heads at both ends, the resting pick heads extending a certain distance beyond the beam end.

6. The precast beam with dense rib floor standing notches as claimed in claim 1, wherein the main bar is extended a certain length from the beam end, and the end of the exposed main bar is provided with a hook or is coupled with an anchor plate.