Construction method for forming large-size wall hole in brick-concrete structure

Abstract

The invention relates to the field of building wall surface construction, in particular to a construction method for forming a large-size wall hole in a brick-concrete structure. The invention discloses a construction method for forming a large-size wall hole in a brick-concrete structure. The construction method is characterized by comprising the following steps: S1, forming a hole; s2, burying is carried out; s3, chiseling away is conducted; s4, dismantling is conducted; s5, pouring is conducted; and S6, forming. The device is safe and reliable in structure and wide in application range.

Description

Technical Field

[0001] The invention relates to the field of building wall construction, in particular to a construction method for opening a large-sized wall hole in a brick-concrete structure. Background Art

[0002] With the advancement of urban renewal projects year by year, a large number of old factories, warehouses, residential buildings and other brick-concrete structures can no longer meet the growth of functional needs, and the need for structural functional transformation has become increasingly prominent. In order to meet the functional and appearance requirements, it is usually necessary to open larger door and window openings on the wall. However, since the original brick-concrete structure bears the load-bearing function, it cannot be dismantled at will. Therefore, the original structure must be reinforced. The current reinforcement construction technology usually uses materials such as angle irons and jacks for support, but it is limited to opening smaller door and window openings. Summary of the invention

[0003] In order to overcome the defects of the prior art and provide a wall construction method with a safe and reliable structure and a wide range of applications, the present invention discloses a construction method for opening a large-sized wall hole in a brick-concrete structure.

[0004] The present invention achieves the purpose of the invention through the following technical solutions: A construction method for opening a large-sized wall hole in a brick-concrete structure is characterized by: performing the following steps in sequence: S1. Opening holes: Determine the opening position of the door opening on the wall, and open at least three holes of equal size in the horizontal direction above the door opening; S2. Embedding: bury a jack in each hole, use an upper template of corresponding size to penetrate the hole above each jack to support the wall, and adjust the jack so that the top of the jack is against the upper template to support the top load; S3. Chiseling: Chisel out the bricks of the wall between the jacks, tie the transverse steel bars and stirrups, support two longitudinal templates, and fit the longitudinal templates at the two end openings of the hole respectively. The two longitudinal templates are fastened with multiple sets of tension bolts, and each set of tension bolts passes through a hole respectively. A material injection port is provided on the top of one longitudinal template, and concrete is poured into the hole from the material injection port to form a crossbeam; S4. Demolition: After the concrete is formed, remove the upper formwork and longitudinal formwork, remove the wall at the door opening, and leave tooth joints at both ends; S5: Casting: Tie steel bars in the door opening, set up formwork, and cast structural columns; S6: Forming: After the concrete is formed and reaches the specified strength, the formwork is removed to form a door opening with a beam-column structure.

[0005] The construction method for opening a large-sized wall hole in a brick-concrete structure is characterized by: In step S1, the height of each hole is not less than the height of two stacked bricks of the wall. In step S4, when tooth joints are left at both ends of the door opening, the method of retreating first and advancing later is adopted.

[0006] The present invention solves the problem of opening large-sized door and window openings when renovating old brick-concrete structures, and has the following beneficial effects: 1. Good economic benefits: the wall does not need to be demolished as a whole, only the area to be renovated needs to be chiseled out, and the renovation area is relatively small.

[0007] 2. High structural safety and reliability: This invention integrates the original brick-concrete structure by burying concrete beams and structural columns, which is safer and more reliable than the original brick-concrete structure.

[0008] 3. Can support large-sized openings: It can be used to open door and window openings larger than 2 meters.

[0009] 4. Strong rigid support strength: By opening smaller holes and burying jacks at intervals to support the original brick-concrete structure, the rigid support is strong and larger. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a flow chart of the present invention, Figure 2 is a schematic diagram of determining the position of a door opening on a wall when the present invention is implemented, Figure 3 It is a schematic diagram of opening a hole at the door opening position when the present invention is implemented. Figure 4 yes Figure 3 A partial enlarged view of area A in the middle. Figure 5 is a schematic diagram of arranging a jack in a hole when the present invention is implemented, Figure 6 yes Figure 5 Cross-sectional view along the BB axis. Figure 7 It is a schematic diagram after the upper formwork, the longitudinal formwork and the wall at the door opening are removed when the present invention is implemented. Figure 8 It is a schematic diagram of a door opening formed after the present invention is completed. DETAILED DESCRIPTION

[0011] The present invention is further described below by means of specific examples. Example

[0012] A construction method for opening a large-sized wall hole in a brick-concrete structure, such as Figure 1 As shown, follow the steps below: S1, opening: Figure 2 to Figure 4As shown: according to the opening position of the door opening 11 determined on the wall 10, at least three holes 12 of equal size are opened in sequence and at intervals in the horizontal direction above the door opening 11, and the height of each hole 12 is the height of two stacked bricks of the wall 10; S2. Buried: Figure 2 to Figure 4 As shown: a jack 1 is buried in each hole 12, and an upper template 2 of corresponding size is used above each jack 1 to penetrate into the hole 12 to support the wall 10, and the jack 1 is adjusted so that the top of the jack 1 is against the upper template 2 to support the top load; S3, chiseling: Figure 5 and Figure 6 As shown: the bricks of the wall 10 between the jacks 1 are chiseled out, the transverse steel bars 3 and stirrups 4 are tied, and two longitudinal templates 7 are supported. The longitudinal templates 7 are respectively attached to the openings at both ends of the hole 12. The two longitudinal templates 7 are fastened with multiple groups of tension bolts 5. Each group of tension bolts 5 passes through a hole 12 respectively. A material injection port 6 is provided on the top of one longitudinal template 7. Concrete is poured into the hole 12 from the material injection port 6, so that the poured concrete forms a cross beam 13; S4. Demolition: Figure 7 As shown: after the concrete is formed, the upper formwork 1 and the longitudinal formwork 7 are removed, the wall 10 at the door opening 11 is removed, and tooth joints are left at both ends, and the tooth joints are retreated first and then advanced; S5: Casting: Figure 7 As shown: tying steel bars in the door opening 11, setting up formwork, and pouring structural columns 14; S6: Forming: Figure 8 As shown: after the concrete is formed and reaches the specified strength, the formwork is removed to form a door opening 11 of a beam-column structure.

Claims

1. A construction method for opening a large-sized wall hole in a brick-concrete structure, characterized by: Follow the steps below to implement: S1, opening holes: determining the opening position of the door opening (11) on the wall (10), and opening at least three holes (12) of equal size in a horizontal direction above the door opening (11); S2. Embedding: a jack (1) is embedded in each hole (12), an upper template (2) of corresponding size is inserted into the hole (12) above each jack (1) to support the wall (10), and the jack (1) is adjusted so that the top of the jack (1) is against the upper template (2) to support the top load; S3, chiseling: chiseling away the bricks of the wall (10) between the jacks (1), tying the transverse steel bars (3) and the stirrups (4), supporting two longitudinal templates (7), the longitudinal templates (7) respectively fitting at the two end openings of the hole (12), the two longitudinal templates (7) being fastened with a plurality of groups of tension bolts (5), each group of tension bolts (5) respectively passing through a hole (12), a material injection port (6) being provided at the top of one longitudinal template (7), concrete being poured into the hole (12) from the material injection port (6), so that the poured concrete forms a cross beam (13); S4, dismantling: after the concrete is formed, the upper formwork (1) and the longitudinal formwork (7) are dismantled, and the wall (10) at the door opening (11) is dismantled, leaving tooth joints at both ends; S5: Casting: tying steel bars in the door opening (11), setting up formwork, and casting structural columns (14); S6: Forming: After the concrete is formed and reaches the specified strength, the formwork is removed to form a door opening (11) of a beam-column structure.

2. The construction method for opening a large-sized wall hole in a brick-concrete structure as claimed in claim 1, characterized in that: In step S1, the height of each hole (12) is not less than the height of two stacked bricks of the wall (10). In step S4, when tooth joints are left at both ends of the door opening (11), the method of retreating first and advancing later is adopted.

Images