CN116575611A - Formwork-free construction method for concrete constructional column in autoclaved aerated concrete slab system - Google Patents

Formwork-free construction method for concrete constructional column in autoclaved aerated concrete slab system Download PDF

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Publication number
CN116575611A
CN116575611A CN202310485578.XA CN202310485578A CN116575611A CN 116575611 A CN116575611 A CN 116575611A CN 202310485578 A CN202310485578 A CN 202310485578A CN 116575611 A CN116575611 A CN 116575611A
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CN
China
Prior art keywords
aac
wallboard
constructional column
formwork
concrete
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Pending
Application number
CN202310485578.XA
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Chinese (zh)
Inventor
朱泽清
夏博洋
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Shanghai Construction No 7 Group Co Ltd
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Shanghai Construction No 7 Group Co Ltd
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Priority to CN202310485578.XA priority Critical patent/CN116575611A/en
Publication of CN116575611A publication Critical patent/CN116575611A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
    • E04B2/68—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete made by filling-up wall cavities
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/049—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres completely or partially of insulating material, e.g. cellular concrete or foamed plaster
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0613—Closed cages made of one single bent reinforcement mat
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements

Abstract

The application relates to a formwork-free construction method for a concrete constructional column in an autoclaved aerated concrete slab system, which comprises the following steps of: s1: ejecting wall side lines and constructional column positioning lines at the bottom of the structure, and binding constructional column reinforcement cages; s2: according to the position line of the constructional column, fixing the first AAC wallboard at two sides of the constructional column reinforcement cage, and then assembling the second AAC wallboard in a combined mode, so that the first AAC wallboard and the second AAC wallboard assembled in a combined mode are enclosed around the constructional column reinforcement cage and form a pouring cavity; s3: leaving an operating window on the second AAC wallboard; s4: reinforcing the operation window and the horizontal joint; s5: carrying out concrete pouring on the concrete constructional column after the first adhesive of the wallboard joint is solidified; s6: plugging agent is selected to plug the bolt holes, alkali-resistant glass fiber mesh cloth is paved at the wallboard joints, and the facing layer is applied. The application has the advantages of meeting the construction and operability of constructional columns at various construction positions, reducing the technical defects of the traditional construction technology as much as possible, simplifying the construction process, improving the construction efficiency, saving templates and reinforcing auxiliary materials.

Description

Formwork-free construction method for concrete constructional column in autoclaved aerated concrete slab system
Technical Field
The application relates to the technical field of constructional column construction, in particular to a formwork-free construction method for a concrete constructional column in an autoclaved aerated concrete slab system.
Background
The autoclaved aerated concrete slab (AAC wallboard for short) is a novel light porous green environment-friendly building material which takes cement, lime, silica sand and the like as main raw materials and is added with different numbers of reinforcing steel meshes subjected to corrosion prevention treatment according to structural requirements, and the autoclaved aerated concrete slab with porous crystals is produced through high-temperature high-pressure steam curing and reaction, has the density smaller than that of a common cementitious material, and has good performances of fire resistance, sound insulation, heat preservation and the like.
The existing AAC wallboard can be applied to the outer wall and the inner wall of a building.
With respect to the related art in the above, the inventors consider that there are the following technical drawbacks: when the AAC wallboard is applied to the outer wall and the inner wall of a building, the AAC wallboard has the defects of low strength, poor mounting capacity and the like.
Disclosure of Invention
In order to improve the strength and mounting capacity of the AAC wallboard when the AAC wallboard is applied to an outer wall and an inner wall of a building, the application provides a negative formwork-free construction method for a concrete constructional column in an autoclaved aerated concrete slab system.
The above object of the present application is achieved by the following technical solutions:
a formwork-free construction method for a concrete constructional column in an autoclaved aerated concrete slab system comprises the following steps:
s1: ejecting wall side lines and constructional column positioning lines at the bottom of the structure, and binding constructional column reinforcement cages;
s2: according to the position line of the constructional column, fixing the first AAC wallboard at two sides of the constructional column reinforcement cage, and then assembling the second AAC wallboard in a combined mode, so that the first AAC wallboard and the second AAC wallboard assembled in a combined mode are enclosed around the constructional column reinforcement cage and form a pouring cavity;
s3: leaving an operating window on the second AAC wallboard;
s4: reinforcing the operation window and the horizontal joint;
s5: carrying out concrete pouring on the concrete constructional column after the first adhesive of the wallboard joint is solidified;
s6: plugging agent is selected to plug the bolt holes, alkali-resistant glass fiber mesh cloth is paved at the wallboard joints, and the facing layer is applied.
By adopting the technical scheme, when the first AAC wallboard and the second AAC wallboard which are assembled and assembled are applied to the outer wall and the inner wall of a building, the strength and the mounting capacity of the AAC wallboard are improved due to the existence of the concrete constructional column; meanwhile, compared with the traditional concrete structure formwork construction, the application does not need to mount and dismount the supporting formwork, namely: the first AAC wallboard and the second AAC wallboard which are assembled together form a supporting template of the concrete constructional column, so that a temporary operation frame is not required to be erected to assist in the installation and the disassembly of the supporting template in the whole construction process, and the defect of poor surface forming quality of the supporting template after the template is disassembled due to the repeated use of the supporting template is avoided; the concrete constructional column is used as a hanging bearing member of an outer wall curtain wall and an inner wall weight, and the first AAC wallboard and the second AAC wallboard assembled in a matched mode meet the construction and operability of constructional columns at various construction positions, so that the technical defects of the traditional construction technology are reduced as much as possible, the construction process is simplified, the construction efficiency is improved, and the effects of saving templates and reinforcing auxiliary materials are achieved.
Preferably, in the step S1, in the process of binding the stirrups, the stirrups should be sequentially bound from bottom to top along the height direction of the longitudinal stirrups, and the upper end and the lower end of the constructional column reinforcement cage are encryption areas within 600mm, and the distance between the mutual stirrups in the encryption areas is not more than 100mm.
Through the technical scheme, the distance between the mutual stirrups in the encryption area is not more than 100mm. Thereby improving the overall strength of the constructional column reinforcement cage and further improving the overall strength of the concrete constructional column after pouring.
Preferably, in S2, the first AAC wallboard is connected between the structure top and the structure bottom by a fixture and a simultaneous filling mortar, and the second AAC wallboard is also connected between the structure top and the structure bottom by a fixture and a simultaneous filling mortar.
Through the technical scheme, under the combined action of the fixing piece and the mortar, the first AAC wallboard and the second AAC wallboard are installed between the structural top and the structural bottom.
Preferably, the thickness of the first AAC wallboard should not be less than 200mm, and the first AAC wallboard should not be greater than 3900mm in length, the thickness of the second AAC wallboard should not be less than 50mm, and the length of the second AAC wallboard should not be greater than 2000mm.
Through the technical scheme, the strength and the mounting capacity of the first AAC wallboard and the second AAC wallboard can meet the technological requirements.
Preferably, a horizontal seam is formed between the two second AAC wallboards on the same vertical line, the horizontal seam is provided with a Chinese character 'wan' shaped fixing piece, and the two second AAC wallboards on the same vertical line are connected through the Chinese character 'wan' shaped fixing piece.
Through above-mentioned technical scheme, because the length of single second AAC wallboard does not satisfy the layer height, and vertical fishplate bar should not be more than once, can realize the connection between two second AAC wallboards on the same vertical straight line through ten thousand font firmware.
Preferably, the horizontal seam formed by two vertically connected second AAC wallboards positioned on one side of the pouring cavity is a first horizontal seam, the horizontal seam formed by two vertically connected second AAC wallboards positioned on the other side of the pouring cavity is a second horizontal seam, and the first horizontal seam and the second horizontal seam are staggered by more than 1000 mm.
Through above-mentioned technical scheme, should stagger the distance more than 1000mm between first horizontal piece department and the horizontal piece department of second to make the structure of the second AAC wallboard of vertical fishplate bar more stable.
Preferably, the junction between the first AAC wallboard and the second AAC wallboard forms a wallboard joint, and the wallboard joint is bonded by using a first adhesive.
Through above-mentioned technical scheme, adopt first binder to bond the wallboard seam, improved the joint strength between first AAC wallboard and the second AAC wallboard.
Preferably, in S3, the operation window is located at the opposite side of the second horizontal seam, and the height of the operation window is preferably not more than 2000mm.
Through the technical scheme, the height of the operation window is not more than 2000mm, so that concrete is poured in layers, and the compaction of concrete by vibration is ensured.
Preferably, in S6, the width of the alkali-resistant glass fiber mesh cloth is not less than 100mm.
By adopting the technical scheme, the facing layer formed by the alkali-resistant glass fiber mesh cloth can cover bolt holes and wallboard joints more comprehensively.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the first AAC wallboard and the second AAC wallboard assembled by combination are applied to the outer wall and the inner wall of a building, the strength and the mounting capacity of the AAC wallboard are improved due to the existence of the concrete constructional column; meanwhile, compared with the traditional concrete structure formwork construction, the application does not need to mount and dismount the supporting formwork, namely: the first AAC wallboard and the second AAC wallboard which are assembled together form a supporting template of the concrete constructional column, so that a temporary operation frame is not required to be erected to assist in the installation and the disassembly of the supporting template in the whole construction process, and the defect of poor surface forming quality of the supporting template after the template is disassembled due to the repeated use of the supporting template is avoided; the concrete constructional column is used as a hanging bearing member of an outer wall curtain wall and an inner wall weight, and the first AAC wallboard and the second AAC wallboard which are assembled in a matched manner are matched, so that the construction and operability of constructional columns at various construction positions are met, the technical defects of the traditional construction technology are reduced as much as possible, the construction process is simplified, the construction efficiency is improved, and the effects of saving templates and reinforcing auxiliary materials are achieved;
2. because the length of a single second AAC wallboard does not meet the layer height, and the vertical connecting plate is not suitable for more than one time, the connection between two second AAC wallboards on the same vertical straight line can be realized through the Chinese character 'Wan' -shaped firmware.
Drawings
FIG. 1 is a cross-sectional view of the in-line wall formwork-free system of the present application.
Fig. 2 is an enlarged partial schematic view of the portion a in fig. 1.
Fig. 3 is an elevation view of a second AAC wallboard in connection with a structural backing in accordance with the present application.
Fig. 4 is a schematic view of the front and back construction of two second AAC wallboards of the application connected by a herringbone fastener.
Fig. 5 is a schematic diagram of the structure of the wann firmware of the present application.
Fig. 6 is a cross-sectional view of the formwork-free system for a t-shaped wall of the present application.
Fig. 7 is a cross-sectional view of the corner wall form-free system of the present application.
FIG. 8 is a schematic view of the structure of the present application for reinforcing an operating window, horizontal seam.
FIG. 9 is a cross-sectional view of a molding finish layer in a in-line wall form free system of the present application.
Fig. 10 is a cross-sectional view of a molding finish layer in a t-wall form free system of the present application.
FIG. 11 is a cross-sectional view of a facing layer in a corner wall form-free system of the present application.
Reference numerals illustrate: 1. constructing a column reinforcement cage; 11. longitudinal ribs; 12. stirrups; 2. a first AAC wallboard; 21. a convex portion; 22. connecting wallboards; 221. a connecting pin; 23. a protrusion; 232. fixing pins; 24. bolt holes; 3. a second AAC wallboard; 31. a horizontal joint; 32. a Chinese character 'wan' shaped fixing piece; 321. a limit part; 33. an operation window; 4. a perfusion chamber; 41. a wallboard joint; 5. a straight angle steel member; 51. self-tapping screw; 52. a fastener; 53. a mortar layer; 6. a first split bolt; 61. a first angle iron; 62. a first grub bolt; 63. a second angle iron; 64. a second grub bolt; 65. a third angle iron; 7. alkali-resistant glass fiber mesh cloth.
Detailed Description
The application is described in further detail below with reference to fig. 1-11.
The embodiment of the application discloses a formwork-free construction method for a concrete constructional column in an autoclaved aerated concrete slab system. Referring to fig. 1, the formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system comprises the following steps:
s1: and (3) ejecting wall side lines and constructional column positioning lines at the bottom of the structure, and binding the constructional column reinforcement cage 1.
Referring to fig. 1 and 2, the presence of the wall border facilitates the installation of the first AAC wallboard 2 and the second AAC wallboard 3 at the predetermined position of the structure bottom by the worker, while the presence of the column positioning line facilitates the installation of the bound column reinforcement cage 1 at the predetermined position of the structure bottom by the constructor; the constructional column steel bar comprises four longitudinal bars 11 which are in rectangular distribution and stirrups 12 which are bound on the outer sides of the four longitudinal bars 11, and the joints of the stirrups 12 and the longitudinal bars 11 are welded and fixed; the stirrups 12 are provided in plurality, and a plurality of stirrups 12 are arranged at intervals along the height direction of the longitudinal bars 11.
In the process of binding the stirrups 12, the stirrups should be sequentially bound from bottom to top along the height direction of the longitudinal bars 11; the upper end and the lower end of the constructional column reinforcement cage 1 are provided with encryption areas within 600mm, namely: the distance of 600mm from the top to the bottom of the structure and the distance of 600mm from the bottom to the top of the structure are encryption areas of the constructional column reinforcement cage 1, and the distance between the mutual stirrups 12 positioned in the encryption areas is not more than 100mm; the constructional column reinforcement cage 1 is positioned in a conventional area between two encryption areas, and the distance between the mutual stirrups 12 positioned in the conventional area is not less than 200mm.
The structural bottom refers to a steel structural bottom or a concrete structural bottom, and the structural top refers to a steel structural top or a concrete structural top.
S2: according to the constructional column position line, the first AAC wallboard 2 at two sides of the constructional column reinforcement cage 1 is fixed firstly, and then the second AAC wallboard 3 is assembled in a combined mode, so that the first AAC wallboard 2 and the second AAC wallboard 3 assembled in a combined mode are enclosed around the constructional column reinforcement cage 1 and form a pouring cavity 4.
Referring to fig. 1 and 3, specifically, the connection of the bottom surface of the first AAC wallboard 2 with the structure bottom, the connection of the top surface of the first AAC wallboard 2 with the structure top, the connection of the bottom surface of the second AAC wallboard 3 with the structure bottom, and the connection of the bottom surface of the second AAC wallboard 3 with the structure bottom are all connected by fixing pieces; in this embodiment, since the connection manner is the same, in this embodiment, the connection of the bottom surface of the second AAC wallboard 3 and the bottom structure by the fixing member is taken as an example.
Referring to fig. 1 and 3, in the present embodiment, the fixing member is a straight angle steel member 5, the vertical side of the right angle steel member 5 is fixedly connected to the bottom of one side of the second AAC wallboard 3 far from the constructional column reinforcement cage 1 by a tapping screw 51, and the horizontal side of the right angle steel member 5 is fixed to the bottom of the structure by a fastener 52; in this embodiment, the fastener 52 is a nail or an M8 expansion bolt. And filling mortar in the gaps existing between the bottom surface of the second AAC wallboard 3 and the structural bottom simultaneously, so that a mortar layer 53 is formed in the gaps existing between the bottom surface of the second AAC wallboard 3 and the structural bottom; thereby completing the fixed connection between the bottom surface of the second AAC wallboard 3 and the structural bottom.
Referring to fig. 1 and 4, the thickness of the first AAC wallboard 2 should not be less than 200mm, and the length of the first AAC wallboard 2 should not be greater than 3900mm; the thickness of the second AAC wallboard 3 should not be less than 50mm, and the length of the second AAC wallboard 3 should not be more than 2000mm; because the length of the single second AAC wallboard 3 does not meet the floor height, and the vertical connecting plate should not exceed once, so in this embodiment, second AAC wallboard 3 on the same vertical line is provided with two, forms horizontal seam part 31 between two second AAC wallboards 3 on the same vertical line, and horizontal seam part 31 is provided with ten thousand font firmware 32, and two second AAC wallboards 3 on the same vertical line are connected through ten thousand font firmware 32, connect in order to meet the floor height through the upper and lower between two second AAC wallboards 3.
Referring to fig. 4 and 5, the wann fastener 32 of the horizontal seam 31 is provided with two, two Chinese character 'wan' shaped firmware 32 positioned at the same horizontal joint 31 are arranged at intervals; two ends of each Chinese character 'wan' shaped fixing piece 32 are vertically bent to form two limiting parts 321, and the two limiting parts 321 on the same end of each Chinese character 'wan' shaped fixing piece 32 are arranged vertically in a staggered manner; the universal-shaped firmware 32 is positioned at a horizontal joint 31 formed between the two second AAC wallboards 3, the top surface of the universal-shaped firmware 32 is abutted with the bottom surface of the second AAC wallboard 3 positioned above, and the bottom surface of the universal-shaped firmware 32 is abutted with the top surface of the second AAC wallboard 3 positioned below; and the two sides of the second AAC wallboard 3 positioned above, which are close to and far from the constructional column reinforcement cage 1, are clamped between the two upward-facing limiting parts 321, and the two sides of the second AAC wallboard 3 positioned below, which are close to and far from the constructional column reinforcement cage 1, are clamped between the two downward-facing limiting parts 321. And the limiting part 321 is provided with a fastening pin, and the fastening pin sequentially passes through the limiting part 321 and the second AAC wallboard 3, so that the Chinese character 'wan' -shaped firmware 32 is fixed on the second AAC wallboard 3.
Referring to fig. 4 and 5, the horizontal seam 31 formed by the two vertically connected second AAC wallboards 3 located at one side of the pouring cavity 4 is the first horizontal seam 31, the horizontal seam 31 formed by the two vertically connected second AAC wallboards 3 located at the other side of the pouring cavity 4 is the second horizontal seam 31, and the first horizontal seam 31 and the second horizontal seam 31 should be staggered by a distance of more than 1000 mm.
Referring to fig. 2, in the in-line wall formwork-free system, two first AAC wallboards 2 are integrally formed with a protrusion 21 at one end thereof, two second AAC wallboards 3 are clamped at one side thereof with the protrusion 21, and opposite ends of each second AAC wallboard 3 are respectively abutted with one side thereof with the two first AAC wallboards 2; thereby two first AAC wallboards 2 and two second AAC wallboards 3 that the mutual combination was assembled enclose and close around constructional column steel reinforcement cage 1 and form and pour into chamber 4.
Referring to fig. 6, in the form-free system for a t-shaped wall, the construction is different from that of the form-free system for a straight-shaped wall in that: one side of a second AAC wallboard 3 far away from the pouring cavity 4 is fixedly connected with a connecting wallboard 22 through a connecting piece, the specification of the connecting wallboard 22 is the same as that of the first AAC wallboard 2, the connection mode of the bottom surface and the structural top of the connecting wallboard 22 is the same as that of the bottom surface and the structural top of the first AAC wallboard 2, and the connection mode of the top surface and the structural top of the connecting wallboard 22 is the same as that of the top surface and the structural top of the first AAC wallboard 2.
The connecting piece is a connecting pin 221, the length of the connecting pin 221 is 300mm-400mm, and the connecting pin 221 is obliquely driven into the second AAC wallboard 3 and the connecting wallboard 22; preferably, the angle formed between the end of the connecting pin 221 driven into the connecting wallboard 22 and the horizontal plane is 30 degrees; so that two first AAC siding boards 2 and connecting siding boards 22 located in the same lateral direction together constitute a t-shaped wall body.
Referring to fig. 7, in the corner type wall formwork-free system, end faces of two first AAC wallboards 2, which are close to each other, are vertically arranged and are enclosed on two adjacent sides of a constructional column reinforcement cage 1, one end of each of the two first AAC wallboards 2, which is close to the constructional column reinforcement cage 1, is uniformly and integrally formed with a protrusion 23, and a connection gap is formed between the protrusion 23 and the first AAC wallboard 2 corresponding to the position. The end faces of the two second AAC wallboards 3, which are close to each other, are vertically arranged and are enclosed on the other adjacent two sides of the constructional column reinforcement cage 1, and one ends of the two second AAC wallboards 3, which are far away from each other, extend into the two connecting gaps respectively.
The two second AAC wallboards 3 are fixedly connected through the fixing pin 232, the length of the fixing pin 232 is 300mm-400mm, and the fixing pin 232 is obliquely driven into the two second AAC wallboards 3; preferably, the fixing pin 232 is driven into the end of the second AAC wallboard 3 at an angle of 30 ° to the horizontal. So that the two first AAC wallboards 2 and the two second AAC wallboards 3 together form a corner wall body.
In the formwork-free system for the straight-shaped wall body, the formwork-free system for the T-shaped wall body and the formwork-free system for the corner-type wall body, a wall board slit 41 is formed at the joint between the first AAC wall board 2 and the second AAC wall board 3, and the wall board slit 41 is bonded by adopting a first adhesive.
S3: an operating window 33 is left on the second AAC siding 3.
Referring to fig. 8, the operation window 33 is located at the opposite side of the second horizontal seam 31, and the height of the operation window 33 is not more than 2000mm, it should be noted that the height of the operation window 33 is the distance between the bottom of the structure and the operation window 33: thereby being convenient for the layered pouring of the concrete and ensuring the compaction of the concrete by vibrating.
S4: and reinforcing the operation window 33 and the horizontal joint.
Referring to fig. 1, when the operation window 33 and the horizontal seam 31 in the in-line wall body formwork-free system are reinforced, the first pair of pull bolts 6 is selected to be matched with the first angle iron 61; since the reinforcement of the operation window 33 is the same as that of the horizontal joint 31, the reinforcement of the operation window 33 will be described as an example.
When the operation window 33 needs to be reinforced, two first angle irons 61 are arranged, the two first angle irons 61 are symmetrically arranged on one side of the two second AAC wallboards 3 far away from the constructional column reinforcement cage 1, the vertical side of the first angle irons 61 is positioned on one side of the first angle irons 61 close to the constructional column reinforcement cage 1, and the side of the second AAC wallboards 3 far away from the constructional column reinforcement cage 1 is attached; and the first angle iron 61 corresponding to the position of the operation window 33 blocks the operation window 33. The first split bolt 6 is an M14 split bolt, the first split bolt 6 penetrates through the first AAC wallboard 2 and the vertical sides of the two first angle irons 61, and the two ends of the first split bolt 6 are connected with first nuts in a threaded manner; thereby reinforcing the operation window 33 by the first split bolt 6 in cooperation with the first angle iron 61.
In order to enable the first angle iron 61 to more firmly reinforce the operation window 33, the first pair of tie bolts 6 are provided in two, and the two first pair of tie bolts 6 are symmetrically provided at opposite ends of the first angle iron 61.
Referring to fig. 6, when reinforcing the operation window 33 and the horizontal seam 31 in the formwork-free system of the T-shaped wall, the first flat head bolt 62 is selected to be matched with the second angle iron 63; since the reinforcement of the operation window 33 is the same as that of the horizontal joint 31, the reinforcement of the operation window 33 will be described as an example.
In the T-wall formwork-free system, the operating window 33 is left on the second AAC wallboard 3 without the connecting wallboard 22; the vertical side of the second angle iron 63 and the side of the second angle iron 63 close to the constructional column reinforcement cage 1 are attached to the side of the second AAC wallboard 3 where the operation window 33 is reserved, and the first flat head bolt 62 is an M14 flat head bolt. One end of the first flat head bolt 62, which is far away from the head part, sequentially penetrates through the vertical sides of the first AAC wallboard 2 and the second angle iron 63, a second nut is connected to the first flat head bolt 62 in a threaded manner, and the first AAC wallboard 2 is clamped between the head part of the first flat head bolt 62 and the second nut; thereby reinforcing the operation window 33 by the first grub bolt 62 in cooperation with the second angle iron 63.
In order to enable the first grub bolts 62 to more firmly reinforce the operation window 33, the first grub bolts 62 are provided in two, and the two first grub bolts 62 are symmetrically provided at opposite ends of the second angle iron 63.
Referring to fig. 7, when the operation window 33 and the horizontal seam 31 in the corner wall body formwork-free system are reinforced, the second flat bolt 64 is selected to be matched with the third angle iron 65; since the reinforcement of the operation window 33 is the same as that of the horizontal joint 31, the reinforcement of the operation window 33 will be described as an example.
The vertical side of the third angle iron 65 and the side of the third angle iron 65 close to the constructional column reinforcement cage 1 are attached to the side of the second AAC wallboard 3 where the operation window 33 is reserved, and the second flat head bolt 64 is an M14 flat head bolt. One end of the second flat bolt 64 far away from the head part sequentially penetrates through the vertical sides of the first AAC wallboard 2 and the third angle iron 65, a third nut is connected to the second flat bolt 64 in a threaded manner, and the first AAC wallboard 2 is clamped between the head part of the second flat bolt 64 and the third nut; thereby reinforcing the operation window 33 by the second grub bolt 64 in cooperation with the third angle iron 65.
In order to enable the second flat head bolts 64 to more firmly reinforce the operation window 33, the second flat head bolts 64 are provided in two, and the two second flat head bolts 64 are symmetrically provided at opposite ends of the third angle iron 65.
S5: the concrete constructional column concrete is poured after the wallboard joint 41 is first adhesive cured.
After the first adhesive adhered to the wallboard joint 41 is solidified, the parts for reinforcing the operation window 33 and the horizontal joint 31 are removed, and then concrete is poured into the operation window 33, so that the layered pouring is required while the compaction of the concrete during the pouring of the concrete is required.
S6: plugging agent is selected to plug the bolt holes 24, and alkali-resistant glass fiber mesh cloth 7 is paved at the wallboard joints 41 to form a facing layer.
Referring to fig. 9, after the components reinforced at the operation window 33 and the horizontal joint 31 are removed, the bolt holes 24 are inevitably left on the first AAC wallboard 2, and the bolt holes 24 need to be plugged; the blocking agent is polyurethane foaming agent and second adhesive. Firstly, filling polyurethane foaming agent into the bolt holes 24, and then plugging the bolt holes 24 through a second adhesive; at the same time, alkali-resistant glass fiber mesh cloth 7 is paved at the wallboard joint 41, and a facing layer is applied for beautifying.
Specifically, in the in-line wall formwork-free system, four alkali-resistant glass fiber mesh fabrics 7 are respectively adhered to four connecting positions of the first AAC wallboard 2 and the second AAC wallboard 3 through a second adhesive, and the width of each alkali-resistant glass fiber mesh fabric 7 is not smaller than 100mm; thereby the alkali-resistant glass fiber mesh cloth 7 shields the wallboard joints 41 and the bolt holes 24 in the in-line wall body formwork-free system.
Referring to fig. 10, in the formwork-free system for a t-shaped wall, four alkali-resistant glass fiber mesh cloth 7 are respectively adhered to two joints of the first AAC wallboard 2 and the second AAC wallboard 3 and two bending joints formed by the connecting wallboard 22 and the first AAC wallboard 2 by a second adhesive, and the width of each alkali-resistant glass fiber mesh cloth 7 is not less than 100mm; thereby the alkali-resistant glass fiber mesh cloth 7 shields the wallboard joints 41 and the bolt holes 24 in the T-shaped wall body formwork-free system.
Referring to fig. 11, in the corner type wall formwork-free system, four alkali-resistant glass fiber mesh fabrics 7 are respectively adhered to a bending part formed by two second AAC wallboards 3, a bending part formed by two first AAC wallboards 2, and two connecting parts of the first AAC wallboards 2 and the second AAC wallboards 3 by a second adhesive, and the width of each alkali-resistant glass fiber mesh fabric 7 is not less than 100mm; thereby the alkali-resistant glass fiber mesh cloth 7 shields the wallboard joints 41 and the bolt holes 24 in the corner type wall body formwork-free system.
Working principle: binding a constructional column reinforcement cage 1, installing the constructional column reinforcement cage 1 at a preset position of a structural bottom, assembling a first AAC wallboard 2 and a second AAC wallboard 3 in a combined mode, enclosing the first AAC wallboard 2 and the second AAC wallboard 3 around the constructional column reinforcement cage 1 to form a pouring cavity 4, simultaneously keeping an operation window 33 on the second AAC wallboard 3, reinforcing the operation window 33 and the horizontal splice joint, removing the parts for reinforcing the operation window 33 and the horizontal splice joint after a first adhesive adhered to the wallboard joint 41 is solidified, pouring concrete into the operation window 33, and finally paving an alkali-resistant glass fiber mesh 7 at the wallboard joint 41 to form a finish layer; the concrete constructional column is used as a hanging bearing member of an outer wall curtain wall and an inner wall heavy object, and the first AAC wallboard 2 and the second AAC wallboard 3 assembled in a matched mode meet the construction and operability of constructional columns of various construction positions, so that the defects of the traditional construction technology are reduced as much as possible, the construction process is simplified, the construction efficiency is improved, and the effects of saving templates and reinforcing auxiliary materials are achieved.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (9)

1. A formwork-free construction method for a concrete constructional column in an autoclaved aerated concrete slab system is characterized by comprising the following steps of: the method comprises the following steps:
s1: ejecting a wall side line and a constructional column positioning line at the bottom of the structure, and binding a constructional column reinforcement cage (1);
s2: according to the constructional column position line, first AAC wallboards (2) on two sides of a constructional column reinforcement cage (1) are fixed, and then a second AAC wallboard (3) is assembled in a combined mode, so that the first AAC wallboard (2) and the second AAC wallboard (3) which are assembled in a combined mode are enclosed around the constructional column reinforcement cage (1) and form a pouring cavity (4);
s3: leaving an operating window (33) on the second AAC wallboard (3);
s4: reinforcing the operation window (33) and the horizontal seam;
s5: carrying out concrete pouring on the concrete constructional column after the wallboard joint (41) is solidified by the first adhesive;
s6: plugging agent is selected to plug the bolt holes (24), alkali-resistant glass fiber mesh cloth (7) is paved at the wallboard joints (41), and the facing layer is applied.
2. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as claimed in claim 1, wherein the method comprises the following steps: in S1, in the process of binding stirrups (12), the stirrups should be sequentially bound from bottom to top along the height direction of the longitudinal ribs (11), the upper end and the lower end of the constructional column reinforcement cage (1) are in a 600mm range and are encryption areas, and the distance between the stirrups (12) positioned in the encryption areas is not more than 100mm.
3. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as claimed in claim 1, wherein the method comprises the following steps: in S2, the first AAC wallboard (2) is connected between the structure top and the structure bottom by the fixture and the simultaneous filling mortar, and the second AAC wallboard (3) is also connected between the structure top and the structure bottom by the fixture and the simultaneous filling mortar.
4. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as claimed in claim 1, wherein the method comprises the following steps: the thickness of the first AAC wallboard (2) should not be less than 200mm, and the length of the first AAC wallboard (2) should not be greater than 3900mm, the thickness of the second AAC wallboard (3) should not be less than 50mm, and the length of the second AAC wallboard (3) should not be greater than 2000mm.
5. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as recited in claim 4, wherein the method comprises the following steps: a horizontal seam (31) is formed between the two second AAC wallboards (3) on the same vertical straight line, the horizontal seam (31) is provided with a Chinese character 'wan' shaped firmware (32), and the two second AAC wallboards (3) on the same vertical straight line are connected through the Chinese character 'wan' shaped firmware (32).
6. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as recited in claim 5 is characterized in that: the horizontal seam (31) formed by the two vertically connected second AAC wallboards (3) positioned on one side of the pouring cavity (4) is a first horizontal seam (31), the horizontal seam (31) formed by the two vertically connected second AAC wallboards (3) positioned on the other side of the pouring cavity (4) is a second horizontal seam (31), and the distance between the first horizontal seam (31) and the second horizontal seam (31) is more than 1000 mm.
7. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as claimed in claim 1, wherein the method comprises the following steps: a wallboard seam (41) is formed at the joint between the first AAC wallboard (2) and the second AAC wallboard (3), and the wallboard seam (41) is bonded by adopting a first adhesive.
8. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as claimed in claim 1, wherein the method comprises the following steps: in S3, the operation window (33) is located at the opposite side of the second horizontal joint (31), and the height of the operation window (33) is not more than 2000mm.
9. The formwork-free construction method for the concrete constructional column in the autoclaved aerated concrete slab system as claimed in claim 1, wherein the method comprises the following steps: in S6, the width of the alkali-resistant glass fiber mesh cloth (7) is not less than 100mm.
CN202310485578.XA 2023-04-28 2023-04-28 Formwork-free construction method for concrete constructional column in autoclaved aerated concrete slab system Pending CN116575611A (en)

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CN202310485578.XA CN116575611A (en) 2023-04-28 2023-04-28 Formwork-free construction method for concrete constructional column in autoclaved aerated concrete slab system

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