Door opening lower hanging beam

Abstract

A door opening lower hanging beam relates to the technical field of building construction and comprises a door opening lower hanging beam body and rectangular teeth arranged on the side face of the door opening lower hanging beam body, the width of the teeth is matched with that of bricks for building a wall on the side face of the door opening lower hanging beam body, and a notch between every two adjacent rectangular teeth is rectangular. The width of the notch is matched with the width of a brick for building a wall on the side face of the door opening lower suspended beam body, so that the brick for building the wall on the side face of the door opening lower suspended beam body is tightly embedded into the notch. The utility model has the advantages that cracks caused by ultra-long vertical seams of the wall body are avoided, and the quality of the filled wall body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a hanging beam under a door opening. Background Art

[0002] During the construction of building structures, in order to reduce the secondary construction process of the lintel of the door opening structure, during the construction stage of the aluminum film formwork project, the construction method of once pouring and installing the aluminum film board by hanging the lintel under the door opening is usually adopted, that is, concrete replaces the masonry between the traditional door opening lintel and the structure below. The lintel under the door opening mainly includes the following methods: under the beam and under the board. The height of the lintel under the lintel is generally between 0.4mm and 1.2m. The lintel appears in the form of a rectangular parallelepiped, and its width is consistent with the thickness of the surrounding walls. Its height increases with the increase of the building floor height. After the structure is completed, the filling wall construction around the hanging lintel is carried out.

[0003] Normally, to ensure the quality of the infill wall construction, the infill masonry is usually constructed using the staggered overlap method, so that the masonry forms an I-shaped joint connection, which enhances the bite force between the masonry and avoids the common problem of cracks in the infill wall. The concrete under the doorway lintel replaces the infill wall above the traditional doorway lintel, resulting in the concrete above the lintel being unable to form an I-shaped joint with the surrounding masonry, resulting in an extra-long vertical joint between 0.4mm and 1.2m. In general, the size of the extra-long vertical joint is 2 to 6 times the height of the masonry, and the multiple increases with the increase of the floor height. The extra-long vertical joint of the infill wall is prone to cause the common problem of vertical cracks in the wall, affecting the quality of the infill wall. Summary of the invention

[0004] The utility model aims to provide a hanging beam under a door opening which can avoid cracks caused by excessively long vertical seams in a wall and ensure the quality of the filled wall.

[0005] The utility model door opening lower hanging beam is realized as follows:

[0006] The invention comprises a door opening lower hanging beam body and rectangular teeth arranged on the side of the door opening lower hanging beam body, wherein the width of the teeth matches the width of bricks forming the wall on the side of the door opening lower hanging beam body, and the notches between adjacent rectangular teeth are rectangular, wherein the width of the notches matches the width of bricks forming the wall on the side of the door opening lower hanging beam body, so that the bricks forming the wall on the side of the door opening lower hanging beam body are tightly embedded in the notches.

[0007] During construction, the steel frame in the closed inner mold constituting the main body of the door opening lower hanging beam is manufactured in advance as an integrated component, and a plurality of protective layer pads are installed on the inner side of the frame notch on the side of the steel frame;

[0008] A closed rectangular box is installed in the frame notch on the side of the steel frame, and the closed rectangular box is fixed to the steel frame of the lintel with iron wire;

[0009] After the installation of the beam (or floor slab) steel frame on the upper part of the door opening hanging beam body is completed, the connecting bars are inserted to connect the beam or floor slab steel frame with the steel frame of the closed inner mold of the door opening hanging beam body, and tied to form a whole. After the steel bar project is accepted, the structural concrete is poured;

[0010] After the strength of the structural concrete reaches the design requirements, the closed rectangular box on the aluminum membrane plate and the main body of the door opening hanging beam is removed to form a structure with notches at both ends of the door opening hanging beam. After the structure is accepted, the next stage of wall construction begins;

[0011] During wall construction, the wall is built layer by layer according to the engineering design documents and specifications. When the wall height reaches the recessed position of the hanging beam under the door opening, the masonry is stuffed into the recessed positions at both ends of the hanging beam structure under the door opening using the plugging method, so that an I-shaped joint is formed between the masonry wall and the hanging beam structure under the door opening.

[0012] The steel bar skeleton is composed of small beam longitudinal bars, stirrups and suspension bars.

[0013] The size of the closed rectangular box corresponds to the sum of the height of the bricks used for wall construction plus twice the thickness of the mortar joints, and the width of the closed rectangular box corresponds to the width of the wall construction.

[0014] Since the size of the closed rectangular box is consistent with the width of the masonry, and the closed rectangular box is tightly positioned against the inner side of the aluminum membrane plate, it is unnecessary to set pads around the closed inner mold steel frame of the hanging beam body under the door opening.

[0015] Compared with the prior art, the utility model has the advantages of avoiding cracks caused by excessively long vertical seams in the wall and ensuring the quality of the filled wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the hanging beam under the door opening of the utility model;

[0017] Figure 2 It is a structural diagram of the steel skeleton;

[0018] Figure 3 It is a schematic diagram of the structure after the inner mold is closed by the steel bar skeleton;

[0019] Figure 4 This is a schematic diagram of the structure after walls are built on both sides of the door opening.

[0020] Explanation of the reference numerals: A- masonry; 1- main body of the under-doorway hanging beam; 2- rectangular teeth; 3- bricks; 4- notches; 5- steel bar skeleton; 6- skeleton notches; 7- protective layer pads; 8- rectangular boxes; 9- beam steel bar skeleton; 10- aluminum membrane panels; 11- mortar joints. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the door opening lower hanging beam of the utility model in conjunction with the accompanying drawings and embodiments:

[0022] As shown in the figure, the hanging beam under the door opening of the utility model is realized as follows:

[0023] It includes a door opening lower hanging beam body 1, and rectangular teeth 2 arranged on the side of the door opening lower hanging beam body 1, the width of the teeth 2 matches the width of bricks 3 of the masonry wall A on the side of the door opening lower hanging beam body 1, and the notches 4 between adjacent rectangular teeth 2 are rectangular, and the width of the notches 4 matches the width of the bricks 3 of the masonry wall A on the side of the door opening lower hanging beam body 1, so that the bricks 3 of the masonry wall A on the side of the door opening lower hanging beam body 1 are tightly embedded in the notches 4.

[0024] During construction, the steel frame 5 of the closed inner mold of the door opening lower hanging beam body is manufactured in advance as an integrated component, and a plurality of protective layer pads 7 are installed on the inner side of the frame recess 6 on the side of the steel frame 5;

[0025] A wooden closed rectangular box 8 is installed in the frame notch 6 on the side of the steel frame 5, and the closed wooden closed rectangular box 8 is fixed to the steel frame 5 of the lintel by iron wire;

[0026] After the installation of the beam reinforcement skeleton 9 on the upper part of the door opening under-hanging beam is completed, the connecting bars are inserted to connect the beam reinforcement skeleton 9 with the reinforcement skeleton 5 in the closed inner mold of the door opening under-hanging beam body, and tied to form a whole. After the reinforcement engineering is accepted, the structural concrete is poured;

[0027] After the strength of the structural concrete reaches the design requirements, the aluminum film plate 10 constituting the closed inner mold and the wooden closed rectangular box 8 on the door opening lower hanging beam are removed, forming a shape structure with notches 4 at both ends of the door opening lower hanging beam structure, and after the structure is accepted, the next stage of wall construction is entered;

[0028] During the wall construction, the wall is built layer by layer according to the engineering design documents and specifications. When the wall height reaches the notch 4 of the hanging beam under the door opening, the bricks 3 are stuffed into the notches 4 at both ends of the door opening lintel structure by the plugging method, so that an I-shaped joint is formed between the masonry wall A and the hanging beam structure under the door opening.

[0029] The steel reinforcement skeleton 5 is composed of small beam longitudinal reinforcement, stirrups and suspension reinforcement.

[0030] The size of the wooden closed rectangular box 8 matches the sum of the height of the bricks 3 of the wall A plus twice the thickness of the mortar joints 11 , and the width of the wooden closed rectangular box 8 matches the width of the wall A.

Claims

1. A hanging beam under a door opening, characterized in that: The invention comprises a door opening lower hanging beam body and rectangular teeth arranged on the side of the door opening lower hanging beam body, wherein the width of the teeth matches the width of bricks forming the wall on the side of the door opening lower hanging beam body, and the notches between adjacent rectangular teeth are rectangular, wherein the width of the notches matches the width of bricks forming the wall on the side of the door opening lower hanging beam body, so that the bricks forming the wall on the side of the door opening lower hanging beam body are tightly embedded in the notches.

2. The door opening underhang beam according to claim 1, characterized in that: The steel bar skeleton constituting the main body of the hanging beam under the door opening is composed of small beam longitudinal bars, stirrups and hanging bars.

3. The door opening underhanging beam according to claim 1 or 2, characterized in that: During construction, a closed rectangular box is installed in the frame recess on the side of the steel frame. The size of the closed rectangular box corresponds to the sum of the height of the bricks used for wall construction plus twice the thickness of the mortar joints, and the width of the closed rectangular box corresponds to the width of the wall construction.

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