Precast beam and precast beam mounting system

Abstract

The utility model discloses a precast beam and a precast beam mounting system, and relates to the technical field of constructional engineering. Comprising a precast beam, the precast beam is arranged to be of a cuboid structure, precast beam frame vertical ribs are arranged at the four corners in the precast beam in the length direction respectively, and the precast beam frame vertical ribs are bound and connected through a plurality of precast beam stirrups; a plurality of groups of frame beam stirrups are pre-buried in the precast beam in the length direction of the precast beam, the frame beam stirrups extend to the position above the precast beam, and the precast beam parts located on the two sides of the frame beam stirrups form lug lifting parts. According to the prefabricated beam, the prefabricated part of the prefabricated beam is reduced, the beam section of the post-pouring part is increased, and the shear capacity under the earthquake action can be greatly improved by utilizing the bearing capacity of concrete of the post-pouring part in areas with heavy loads or high earthquake intensity; meanwhile, the prefabricated beam can reduce the weight of the prefabricated part, facilitates construction and hoisting, and reduces the manufacturing cost of the prefabricated part.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a prefabricated beam and a prefabricated beam installation system. Background Art

[0002] With the development of technology, prefabricated building parts have become the main construction method for construction projects, such as prefabricated columns, prefabricated beams, prefabricated panels, etc.

[0003] In the prior art, precast beams have too many precast parts, so their shear resistance can only rely entirely on steel bars, which is not conducive to building installation in areas with heavy loads or high earthquake intensity. At the same time, the excessive precast parts of traditional precast beams also lead to heavy lifting and low lifting efficiency. Utility Model Content

[0004] The utility model aims to provide a prefabricated beam and a prefabricated beam installation system, which reduces the prefabricated part of the prefabricated beam and increases the cross-section of the post-cast part of the beam. For areas with heavier loads or higher earthquake intensity, the bearing capacity of the post-cast part of the concrete can be used to greatly improve the shear resistance under earthquake action. At the same time, the use of the prefabricated beam can reduce the weight of the prefabricated component, facilitate construction and hoisting, and reduce the production cost of the prefabricated component.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated beam, comprising a prefabricated beam, wherein the prefabricated beam is arranged as a rectangular structure, and prefabricated beam frame reinforcements are respectively arranged at the four corners along the length direction of the prefabricated beam, and the prefabricated beam frame reinforcements are connected by binding through a plurality of prefabricated beam stirrups; a plurality of groups of frame beam stirrups are embedded in the prefabricated beam along its length direction, and the frame beam stirrups extend to the top of the prefabricated beam, and the prefabricated beam parts located on both sides of the frame beam stirrups form ear parts.

[0006] Preferably, a plurality of precast beam bottom stress-bearing steel bars are arranged inside the precast beam and at the bottom inside the precast beam stirrups.

[0007] Preferably, the stress-bearing steel bars at the bottom of the precast beam extend to the outside of the precast beam.

[0008] Preferably, a plurality of precast beam top structural steel bars are arranged inside the precast beam and at the top inside the precast beam stirrups.

[0009] Preferably, a group of frame beam stirrups includes two pairs of vertical bars extending upward, and each pair of vertical bars are overlapped and connected by cap bars to form a closed composite beam stirrup skeleton to restrain the composite beam longitudinal bars.

[0010] Preferably, hanging nails are provided on the upper surface of the prefabricated beam.

[0011] Preferably, embedded nuts are provided on the side surfaces of the prefabricated beams along the length direction thereof.

[0012] The installation system of precast beams includes a plurality of precast beams, precast slabs, and precast columns. The precast beams are arranged between two adjacent precast columns, the precast slabs are arranged between two adjacent precast beams and are located on the corresponding ears of the two precast beams, and a cast-in-place layer is arranged above the precast beams and between the precast slabs.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model has a precast beam which is slightly wider than the designed frame beam width and has a built-in ear portion for supporting the precast panel, which is convenient for quickly and conveniently installing the precast panel during construction, and the web portion of the precast beam is cast later, so the fault tolerance is high when placing the precast panel; the cross-section of the precast portion of the precast beam is much smaller than that of the traditional precast beam, and the cross-section of the post-cast portion of the beam is increased. For areas with heavier loads or higher earthquake intensity, the bearing capacity of the post-cast portion of concrete can be used to greatly improve the shear resistance under earthquake action, and avoid the disadvantageous situation that the shear resistance of the traditional beam section due to the large number of precast portions completely depends on steel bars, truly realizing the design concept equivalent to cast-in-place, greatly improving the seismic performance of the building, and changing the disadvantages of the traditional precast system. At the same time, the use of the precast beam can reduce the weight of the precast component, facilitate construction and hoisting, reduce the production cost of the precast component, and can also reduce the number of steel bars at the beam end used for shear resistance under earthquake action, reducing the cost of steel bars, thereby greatly reducing the project cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the prefabricated beam of the utility model;

[0016] Figure 2 The plane of the prefabricated beam of the utility model Figure 1 ;

[0017] Figure 3 Reinforcement of prefabricated beam of the utility model Figure 1 ;

[0018] Figure 4 The plane of the prefabricated beam of the utility model Figure 2 ;

[0019] Figure 5 Reinforcement of prefabricated beam of the utility model Figure 2 ;

[0020] Figure 6 This is a diagram showing the coordination relationship between the stirrups of the frame beam and the prefabricated beam of the utility model;

[0021] Figure 7 The utility model prefabricated beam installation system Figure 1 ;

[0022] Figure 8The utility model prefabricated beam installation system Figure 2 .

[0023] In the figure:

[0024] 1- prefabricated beam, 11- ear part, 12- groove, 13- hanging nail, 14- embedded nut,

[0025] 21-precast beam frame reinforcement, 22-precast beam stirrups, 23-precast beam bottom force reinforcement, 24-precast beam top structural reinforcement,

[0026] 3-frame beam stirrups, 31-vertical bars, 32-cap bars,

[0027] 4-precast slab, 5-precast column, 6-cast-in-place layer. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figure 1-6 As shown, a precast beam comprises a precast beam 1, wherein the precast beam 1 is arranged as a cuboid structure, and precast beam frame reinforcements 21 are respectively arranged at the four corners along the length direction of the precast beam 1, and the precast beam frame reinforcements 21 are bound and connected by a plurality of precast beam stirrups 22; a plurality of groups of frame beam stirrups 3 are embedded in the precast beam 1 along its length direction, and the frame beam stirrups 3 extend to the top of the precast beam 1, and the parts of the precast beam 1 located on both sides of the frame beam stirrups 3 form ear portions 11.

[0030] Specifically in this embodiment, a plurality of precast beam bottom stress-bearing steel bars 23 are arranged inside the precast beam 1 and at the bottom inside the precast beam stirrups 22 to enhance the load-bearing strength of the bottom of the precast beam 1. The plurality of precast beam bottom stress-bearing steel bars 23 are evenly arranged along the bottom edge of the precast beam stirrups 22 and are tied and connected to the precast beam stirrups 22.

[0031] Furthermore, the precast beam bottom stress-bearing steel bars 23 extend to the outside of the precast beam 1 to strengthen the connection strength of the concrete pouring at the connection node of the precast beam 1 .

[0032] Specifically in this embodiment, a plurality of precast beam top structural steel bars 24 are arranged inside the precast beam 1 and at the top inside the precast beam stirrups 22 to enhance the load-bearing strength of the top of the precast beam 1. The plurality of precast beam top structural steel bars 24 are evenly arranged along the top edge of the precast beam stirrups 22 and are tied and connected to the precast beam stirrups 22.

[0033] As a specific implementation, a group of frame beam stirrups 3 includes two pairs of vertical bars 31 extending upward, and each pair of vertical bars 31 is overlapped and connected by cap bars 32.

[0034] Furthermore, the upper surface of the precast beam 1 is provided with hanging nails 13 to facilitate demoulding and hanging of the precast beam 1. Specifically in this embodiment, three hanging nails 13 are provided and are evenly arranged along the length direction of the precast beam 1.

[0035] Specifically in this embodiment, embedded nuts 14 are provided on the side surfaces of the prefabricated beam 1 along the length direction thereof.

[0036] Furthermore, the precast beam 1 is provided with grooves 12 on the side surfaces along the width direction thereof, so as to increase the connection area after concrete pouring and improve the connection strength and earthquake resistance of the connection nodes of the precast beam 1 .

[0037] like Figure 7-8 As shown, a precast beam installation system includes a plurality of precast beams 1, precast panels 4, and precast columns 5. The precast beam 1 is erected between two adjacent precast columns 5, the precast panel 4 is erected between two adjacent precast beams 1 and is located on the corresponding ear portions 11 of the two precast beams 1, and a cast-in-place layer 6 is provided above the precast beams 1 and between the precast panels 4.

[0038] It should be noted that the cast-in-place layer 6 is formed by casting concrete in situ and solidifying to form the web portion of the precast beam 1. The cast-in-place layer 6 is mainly poured on the stirrups 3 of the frame beam above the precast beam 1. After the concrete solidifies, it is tightly connected with the frame beam 3. The precast beam 1 and the cast-in-place layer 6 together form a complete composite beam. The cast-in-place layer 6 can slightly cover the precast plate 4 to make the connection between the precast beam 1 and the precast plate 4 smoother.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A prefabricated beam, characterized in that: It includes a precast beam, which is arranged in a rectangular structure. Precast beam frame reinforcements are respectively arranged at the four corners along the length direction of the precast beam, and the precast beam frame reinforcements are connected by binding through a plurality of precast beam stirrups; a plurality of groups of frame beam stirrups are embedded in the precast beam along its length direction, and the frame beam stirrups extend to the top of the precast beam, and the precast beam parts located on both sides of the frame beam stirrups form ear parts.

2. A prefabricated beam according to claim 1, characterized in that: A plurality of precast beam bottom stress-bearing steel bars are arranged inside the precast beam and at the bottom inside the precast beam stirrups.

3. A prefabricated beam according to claim 2, characterized in that: The stress-bearing steel bars at the bottom of the prefabricated beam extend to the outside of the prefabricated beam.

4. The prefabricated beam according to claim 1, characterized in that: A plurality of precast beam top structural steel bars are arranged inside the precast beam and at the top inside the precast beam stirrups.

5. The prefabricated beam according to claim 1, characterized in that: A group of frame beam stirrups includes two pairs of vertical bars extending upward, and each pair of vertical bars is overlapped and connected by cap bars.

6. The prefabricated beam according to claim 1, characterized in that: The upper surface of the prefabricated beam is provided with hanging nails.

7. The prefabricated beam according to claim 1, characterized in that: The side surfaces of the prefabricated beams along the length direction thereof are provided with embedded nuts.

8. An installation system using the prefabricated beam according to any one of claims 1 to 7, characterized in that: It comprises a plurality of precast beams, precast slabs and precast columns. The precast beams are arranged between two adjacent precast columns. The precast slabs are arranged between two adjacent precast beams and are located on the corresponding ears of the two precast beams. A cast-in-place layer is arranged above the precast beams and between the precast slabs.

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