Horizontal haunching connecting structure

Abstract

The utility model belongs to the technical field of fabricated buildings, and discloses a horizontal haunching connecting structure which comprises a frame column, a first frame beam vertically connected to one side of the frame column and a second frame beam vertically connected to the other side of the frame column, and prefabricated laminated slabs are in lap joint with the frame column, the first frame beam and the second frame beam. A first horizontal haunching structure is arranged between the first frame beam and the frame column, a plurality of first reserved round holes are formed in a first right-angle part of the prefabricated laminated slab, the first reserved round holes are formed at equal intervals, and the first reserved round holes are formed in the same straight line; the first beam haunched stirrups penetrate through the corresponding first reserved round holes and then are connected with the first frame beam, the prefabricated laminated slab does not need to be chamfered, the situation that due to beam haunching, the shapes and sizes of prefabricated laminated slab formworks are different is reduced, the situation that the prefabricated laminated slab does not accord with the beam haunching in size is avoided, the project construction progress is accelerated, cost is saved, and the construction efficiency is improved. And good economic benefits are achieved.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building technology, specifically relating to a connection structure for a prefabricated composite slab and a frame beam with a horizontal haunch. Background Technology

[0002] Because prefabricated components are manufactured in factories, their dimensions cannot be adjusted according to on-site construction. When horizontal haunches are added to frame beams, the corners of the composite slabs need to be prefabricated with beveled edges to match the horizontal haunch dimensions. In actual prefabricated projects, the connection between frame beams and composite slabs is cast-in-place. Dimensional deviations between the beam haunch formwork and the prefabricated composite slabs can easily cause grout leakage, resulting in time-consuming and labor-intensive cleaning later. Furthermore, deviations in prefabricated dimensions can easily cause on-site installation difficulties, affecting construction progress. Additionally, prefabricating the corners of the composite slabs with beveled edges to match the horizontal haunch dimensions increases the amount of prefabricated formwork and costs. Summary of the Invention

[0003] To address the technical problems existing in the prior art, the present invention provides a horizontal haunch connection structure between the precast composite slab and the frame beam, which increases the contact area between the corner of the precast composite slab and the haunch of the frame beam, ensuring the reliability of the lap joint.

[0004] To achieve the above objectives, the technical solution adopted by this invention is as follows: a horizontal haunch connection structure, comprising a frame column, a first frame beam vertically connected to one side of the frame column, and a second frame beam vertically connected to the other side of the frame column. The first frame beam and the second frame beam are arranged perpendicularly. Precast composite slabs overlap the frame column, the first frame beam, and the second frame beam. A first horizontal haunch structure is arranged between the first frame beam and the frame column. The precast composite slab is a square structure. Multiple first reserved circular holes are arranged at equal intervals on the first right-angle portion of the precast composite slab. The multiple first reserved circular holes are arranged on the same straight line. The multiple first reserved circular holes are arranged at an inclination angle along the slope of the haunch stirrup of the first beam. The haunch stirrup of the first beam passes through the corresponding first reserved circular hole and connects to the first frame beam. The precast composite slab does not require chamfering.

[0005] Preferably, the diameter of the first reserved circular hole is larger than the diameter of the first beam plus the haunch stirrup, so that the first beam plus the haunch stirrup can pass through the first reserved circular hole, and the diameter difference between the first reserved circular hole and the first beam plus the haunch stirrup is 5mm.

[0006] If the composite slab is connected to two frame beams by a horizontal haunch structure, a second haunch structure is arranged between the second frame beam and the frame column. The second right-angle portion of the precast composite slab is provided with multiple second reserved circular holes. The multiple second reserved circular holes are arranged at equal intervals and on the same straight line. The multiple second reserved circular holes are arranged at the inclined angle of the second beam haunch stirrup. The second beam haunch stirrup passes through the corresponding second reserved circular hole and is connected to the second frame beam. The precast composite slab does not need to be chamfered.

[0007] Preferably, the diameter of the second reserved circular hole is larger than the diameter of the second beam plus the haunch stirrup, so that the second beam plus the haunch stirrup can pass through the second reserved circular hole, and the diameter difference between the second reserved circular hole and the second beam plus the haunch stirrup is 5mm.

[0008] Compared with the prior art, the specific beneficial effects of this utility model are reflected in the following aspects:

[0009] I. This utility model provides a splicing method that does not require oblique cutting of precast composite slabs. Pre-reserved circular holes are made at the right-angle part of the precast composite slab for the beam haunch stirrups to pass through. The spacing of the pre-reserved circular holes is arranged obliquely according to the spacing of the frame beam haunch stirrups. The diameter of the pre-reserved circular holes is 5mm larger than the diameter of the haunch stirrups, which facilitates installation, fixes the composite slab, and can ensure the structural integrity of the beam haunch part.

[0010] II. This utility model increases the contact area between the precast composite slab and the beam at the beam armhole by opening pre-reserved circular holes for the armhole reinforcement to pass through. By increasing the contact area, the planar dimensions of the composite slab are optimized, simplifying the planar dimensions of the composite slab to a shape commonly found in precast component factories. When the composite slab encounters a horizontal armhole of a frame beam, the planar dimensions of the composite slab are square. The corners of the composite slab need to be vertically chamfered according to the dimensions of the frame column. The precasting of the composite slab does not need to consider the armhole structure of the frame beam, ensuring an effective connection between the armhole of the frame beam and the precast composite slab, and enhancing the effective force transmission between the precast composite slab and the armhole of the frame beam.

[0011] Third, this utility model places all the right-angled parts of the precast composite slab at the haunch position of the frame beam, avoiding oblique cuts, making factory formwork more convenient and faster, effectively increasing the overlap area, and ensuring the reliability of the overlap.

[0012] Fourth, while ensuring construction quality, this utility model reduces the difference in shape and size of precast composite slab templates caused by beam haunches, avoids the size mismatch between precast composite slabs and beam haunches, speeds up project construction progress, saves costs, and has good economic benefits. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention, and also a structural schematic diagram of Embodiment 1.

[0014] Figure 2 This is a schematic diagram of the internal connection relationship in Example 1.

[0015] Figure 3 This is a schematic diagram showing the connection relationship between the first frame beam, the second frame beam, and the frame column in Example 1.

[0016] Figure 4 This is a schematic diagram of the prefabricated composite slab in Example 1.

[0017] Figure 5 This is a schematic diagram of the structure of Example 2.

[0018] Figure 6 This is a schematic diagram of the internal connection relationship in Example 2.

[0019] Figure 7 This is a schematic diagram showing the connection relationship between the first frame beam, the second frame beam, and the frame column in Example 2.

[0020] Figure 8 This is a schematic diagram of the prefabricated composite slab in Example 2.

[0021] In the diagram, 1 is a frame column, 2 is the first frame beam, 3 is the second frame beam, 4 is a precast composite slab, 5 is the first horizontal haunch structure, 6 is the first reserved circular hole, 7 is the first beam haunch stirrup, 8 is the second haunch structure, 9 is the second reserved circular hole, and 10 is the second beam haunch stirrup. Implementation

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0023] like Figure 1-4 As shown, a horizontal haunch connection structure includes a frame column 1, a first frame beam 2 vertically connected to one side of the frame column 1, and a second frame beam 3 vertically connected to the other side of the frame column 1. The first frame beam 2 and the second frame beam 3 are arranged perpendicularly. A precast composite slab 4 overlaps the frame column 1, the first frame beam 2, and the second frame beam 3. A first horizontal haunch structure 5 is arranged between the first frame beam 2 and the frame column 1. The precast composite slab 4 is a block-shaped structure. Multiple first reserved circular holes 6 are arranged at equal intervals on the first right-angle portion of the precast composite slab 4. The multiple first reserved circular holes 6 are arranged on the same straight line. The multiple first reserved circular holes 6 are arranged at an inclined angle along the slope of the first beam haunch stirrup 7. The first beam haunch stirrup 7 passes through the corresponding first reserved circular hole 6 and is connected to the first frame beam 2. The precast composite slab 4 does not require chamfering, which speeds up the formwork efficiency and product delivery efficiency.

[0024] Preferably, the diameter of the first reserved circular hole 6 is larger than the diameter of the first beam plus haunch stirrup 7, so that the first beam plus haunch stirrup 7 can pass through the first reserved circular hole 6, and the diameter difference between the first reserved circular hole 6 and the first beam plus haunch stirrup 7 is 5mm.

[0025] During installation, the precast composite slab 4 is placed on the first frame beam 2, the second frame beam 3 and the frame column 1 without cutting off the bevel. The first beam with haunch stirrup 7 passes through the corresponding first reserved round hole 6 and is connected to the first frame beam 2. After all the first beam with haunch stirrup 7 are installed, the formwork is erected and grouting is performed. Example

[0026] like Figure 4-8 As shown, if the composite slab is connected to two frame beams by a horizontal haunch structure, a second haunch structure 8 is arranged between the second frame beam 3 and the frame column 1. Multiple second reserved circular holes 9 are arranged at the second right angle of the precast composite slab 4. The multiple second reserved circular holes 9 are arranged at equal intervals and on the same straight line. The multiple second reserved circular holes 9 are arranged at the inclined angle along the slope of the second beam haunch stirrup 10. The second beam haunch stirrup 10 passes through the corresponding second reserved circular hole 9 and is connected to the second frame beam 3. The precast composite slab 4 does not need to be angled.

[0027] Preferably, the diameter of the second reserved circular hole 9 is larger than the diameter of the second beam plus haunch stirrup 10, so that the second beam plus haunch stirrup 10 can pass through the second reserved circular hole 9, and the diameter difference between the second reserved circular hole 9 and the second beam plus haunch stirrup 10 is 5mm.

[0028] During installation, the precast composite slab 4 is placed on the first frame beam 2, the second frame beam 3, and the frame column 1 without cutting off the bevel. The first beam with haunch stirrup 7 passes through the corresponding first reserved round hole 6 and is connected to the first frame beam 2. The second beam with haunch stirrup 10 passes through the corresponding second reserved round hole 9 and is connected to the second frame beam 3. After all the first beam with haunch stirrup 7 and the second beam with haunch stirrup 10 are installed, the formwork is erected and grouting is performed.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A horizontal haunch connection structure, comprising a frame column (1), a first frame beam (2) vertically connected to one side of the frame column (1), and a second frame beam (3) vertically connected to the other side of the frame column (1), the first frame beam (2) and the second frame beam (3) being arranged vertically, a prefabricated composite plate (4) being overlapped on the frame column (1), the first frame beam (2) and the second frame beam (3), a first horizontal haunch structure (5) being arranged between the first frame beam (2) and the frame column (1), characterized in that: A plurality of first reserved circular holes (6) are arranged at the first right-angled portion of the prefabricated composite plate (4); the plurality of first reserved circular holes (6) are arranged at equal intervals; the plurality of first reserved circular holes (6) are arranged on the same straight line; and the first beam plus axillary stirrups (7) are connected to the first frame beam (2) after passing through the corresponding first reserved circular holes (6).

2. A horizontal axil connection structure according to claim 1, characterized in that: The diameter of the first reserved circular hole (6) is greater than the diameter of the first beam plus axillary stirrups (7), and the diameter difference between the first reserved circular hole (6) and the first beam plus axillary stirrups (7) is 5 mm.

3. A horizontal axil connection structure according to claim 1, characterized in that: A second haunch structure (8) is arranged between the second frame beam (3) and the frame column (1); a second right-angle portion of the prefabricated composite plate (4) is provided with a plurality of second reserved circular holes (9); the plurality of second reserved circular holes (9) are arranged at equal intervals; the plurality of second reserved circular holes (9) are arranged on the same straight line; and the second beam haunch stirrups (10) are connected to the second frame beam (3) after passing through the corresponding second reserved circular holes (9).

4. A horizontal axil connection structure according to claim 3, characterized in that: The diameter of the second reserved circular hole (9) is greater than the diameter of the second beam plus axillary stirrups (10), and the diameter difference between the second reserved circular hole (9) and the second beam plus axillary stirrups (10) is 5 mm.

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