CN117927011A - Construction process of frame structure under aluminum alloy building template system - Google Patents
Construction process of frame structure under aluminum alloy building template system Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 63
- 230000008569 process Effects 0.000 title claims abstract description 58
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 31
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 74
- 238000009434 installation Methods 0.000 claims abstract description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 72
- 230000003014 reinforcing effect Effects 0.000 claims description 42
- 238000013461 design Methods 0.000 claims description 33
- 230000002787 reinforcement Effects 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 238000010586 diagram Methods 0.000 claims description 23
- 238000005266 casting Methods 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 15
- 238000009435 building construction Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 238000007689 inspection Methods 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 5
- 230000006872 improvement Effects 0.000 claims description 4
- 238000012876 topography Methods 0.000 claims description 4
- 229910000755 6061-T6 aluminium alloy Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000011900 installation process Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 2
- 239000002023 wood Substances 0.000 description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 3
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- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 241001330002 Bambuseae Species 0.000 description 1
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Abstract
The invention belongs to the field of constructional engineering, and particularly relates to a frame structure construction process under an aluminum alloy building template system, which comprises the steps of construction preparation, erection of a wall and column template system, erection of a beam template system, erection of a support system, erection of a top template system, elevation adjustment and acceptance, binding reinforcing steel bars of the beam template system and the top template system, and pouring concrete; the frame structure construction process provided by the invention adopts an all-aluminum mould system, utilizes the advantages of good stability, high bearing capacity, high repeated utilization rate, simple installation, more environment-friendly construction process and good size and flatness of the formed section of the concrete after construction, and adopts a supporting system arranged according to the requirements for matched construction, so that the construction safety can be improved, and the construction cost can be reduced; the construction process applied by the invention introduces the concept of step length and the horizontal pull rod for auxiliary support for the support system when the layer height exceeds 3.3m, and has certain guiding significance for the construction process of the frame structure with the layer height exceeding 3.3 m.
Description
Technical Field
The invention belongs to the field of constructional engineering, and particularly relates to a frame structure construction process under an aluminum alloy building template system.
Background
The structure of the existing high-rise commercial building has the characteristics of high floor height, multiple floor height changes, multiple floor thicknesses and the like, so that the construction arrangement is generally divided into two parts, namely a core tube part and a peripheral part. The core section of thick bamboo part mainly comprises elevator shaft, stair, ventilation shaft to mainly adopt traditional wood pattern to build the casting template, the periphery part mainly comprises wall post, stair, floor and periphery, and its majority all mainly adopts traditional wood pattern.
It can be seen that the existing construction is mainly based on the traditional wood pattern, and the characteristics of the wood pattern determine that the existing construction has various disadvantages, for example, if the traditional wood pattern is adopted, a large amount of construction waste is easy to generate, the environment is not protected, a large amount of labor is required, the recovery rate of materials is low, and the surface flatness of the concrete after the construction is low; if the steel frame is adopted for supporting, the operation is inconvenient.
With the development of technology, an aluminum template construction technology appears, and the current JGJ386-2016 "combined aluminum alloy template engineering technical Specification" makes clear construction standards for building construction templates and frame structure construction processes with the layer height of less than 3.3m, but no specific industry standard exists for buildings with the layer height of more than 3.3m, so that construction of buildings with the layer height of more than 3.3m is still in a fumbling stage. Up to the present, a frame structure construction process guidance scheme suitable for an aluminum alloy building template system with a layer height of more than 3.3m on the premise of ensuring construction safety and quality has not been proposed yet.
Disclosure of Invention
In view of the above, the invention provides a frame structure construction process under an aluminum alloy building template system, which aims at providing a guiding scheme aiming at the frame structure construction process under the aluminum alloy building template system with the layer height exceeding 3.3m, and solves the problems of long construction period, inconvenient construction, poor quality of concrete after construction and the like in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the construction process of the frame structure under the aluminum alloy building template system is applied to building construction with the layer height of more than 3.3m, and comprises the following steps:
S1, preparation for construction
Drawing a structural drawing according to construction topography, numbering parts of the aluminum mould system and the supporting system which are qualified in inspection according to the structural drawing, and then paying out a structural line and a control line at a construction site according to drawing requirements to form a construction datum line taking the structural line and the control line as a frame; the aluminum mould system comprises a wall mould system, a column mould system, a beam mould system and a top mould system; the structural line comprises an axis, a column side line, liang Bianxian and a central line of the supporting system, and the control line is a construction reference line which is separated from part of the structural line by a certain distance and is arranged in parallel; in addition, according to the drawn structural drawing, aluminum template manufacturers design and deliver aluminum templates of different specifications and models, and provide field template splicing diagrams of a wall template system, a column template system, a beam template system and a top template system;
S2, supporting wall die system and column die system
Constructing a main reinforcement framework in a column mould structure area marked in the structural drawing paper, binding hoops on the main reinforcement framework, splicing and installing a wall mould system coated with a release agent and an aluminum mould plate of the column mould system according to a field mould splicing diagram of the wall mould system and the column mould system from an internal corner to an external corner and from low to high, and fastening on the wall mould plate and the column mould plate by using a reinforcing device;
S3, supporting a beam mold system
Rechecking the structural line of the beam die system, then installing a beam bottom internal corner template on a column template of the column die system, and splicing and installing the beam bottom template, a beam bottom external corner template, a beam side template and a beam bottom support head template according to the sequence of a field template splicing diagram of the beam die system and matching a support system;
In the installation process, the beam bottom templates are sequentially connected with the beam bottom internal corner templates by pins and pin sheets according to a field template splicing diagram of a beam mold system, when a beam bottom supporting head template is installed between the beam bottom templates, the beam bottom templates are supported by using a supporting system, the external corner templates are connected with the beam bottom templates, and the beam side templates are connected with the external corner templates and fastened by using a reinforcing device;
S4, supporting and setting up of supporting system
The support system is applied to the wall die system, the column die system, the beam die system and the top die system, and is built according to the field template splicing diagram of the wall die system, the column die system, the beam die system and the support system and the order from one side to the other side of construction site selection;
The support system comprises support rods and inclined struts, wherein the support rods are applied to a beam die system and a top die system, each support rod consists of an inner tube, an outer tube, an adjusting assembly and a fixed disc buckle, the inner tube is coarsely adjusted to the height to be abutted against a beam bottom template through the adjusting assembly during construction, horizontal pull rods are arranged between two support rods with the distance of more than 500mm, and the distance length between two adjacent horizontal pull rods is the step length; the diagonal brace is applied to a wall die system and a column die system used by a column with the minimum section side length exceeding 500mm, and consists of an upper diagonal brace, a lower diagonal brace and a diagonal brace fixing point, wherein one ends of the upper diagonal brace and the lower diagonal brace are sleeved into the diagonal brace fixing point during construction, and the other ends of the upper diagonal brace and the lower diagonal brace are fixed on the back ridge;
S5, supporting a top die system
Installing all top plate internal corner templates of a top mold system on beam side templates according to a field template splicing diagram of the top mold system to form an outer ring structure frame of the top mold system, marking the installation positions of keels on the top plate internal corner templates, installing prefabricated keels on the top plate internal corner templates, installing the top mold between the keels and the keels, and installing the top mold between the keels and the top plate internal corner templates, and fixing by matching with a supporting system;
S6, elevation adjustment and acceptance inspection
Adjusting the working surfaces of the templates in the column mould system, the beam mould system and the top mould system to designed elevation according to elevation lines required by construction, and timely reinforcing the reinforcing devices and the supporting systems of the column mould system, the wall mould system and the beam mould system after the elevation adjustment is completed;
In addition, the verticality and the levelness of the whole aluminum mould system are checked and accepted;
S7, binding reinforcing steel bars of the beam die system and the top die system, and pouring concrete
And coating a demoulding agent on the beam bottom internal corner template, the beam bottom external corner template and the beam side template of the beam mould system, binding beam steel bars, putting the beam steel bars into the beam mould, casting walls and columns, casting beams, casting a top plate, and carrying out concrete casting in sequence, and carrying out turnover use on the aluminum mould system after the building construction of the current floor is completed.
Preferably, the aluminum mould plate is prefabricated according to the technological requirements of the aluminum mould system and the supporting system, wherein the single aluminum mould plate consists of a working panel, side ribs and panel reinforcement, one side of the working panel is directly contacted with concrete, and a bolt hole is preset in the working panel; the side ribs are provided with a plurality of through holes with the diameter of 16.5mm, and the aluminum templates are connected and disconnected with surrounding templates through the matching of pins, pin pieces and the through holes; the section of the panel reinforcement is in an n shape, the panel reinforcement is arranged on the other side of the working panel and is used for improving the bending rigidity of the working panel, and the combination of the panel reinforcement and the side ribs realizes the improvement of the integral rigidity and the strength of the aluminum template;
The aluminum template is made of 6061-T6 aluminum alloy, the thickness of the working panel is 4.0mm, the thickness of the side rib is 6-8mm, the height of the side rib is 65mm, the maximum width of the aluminum template is 400mm, and the maximum length of the aluminum template is 2600mm; when the width of the working panel of the aluminum template is 400mm, trapezoidal reinforcing ribs are arranged on the same side of the reinforcing ribs of the panel, and when the width of the working panel of the aluminum template is less than 400mm, the reinforcing ribs are not arranged.
Further, the reinforcing device comprises a counter-pulling screw rod, back ribs, reinforcing nuts and column hoops, wherein the back ribs are formed by welding a group of rectangular pipes which are arranged in parallel, the distance between the group of rectangular pipes is larger than the diameter of the counter-pulling screw rod and smaller than the outer diameter of the reinforcing nuts, in addition, the back ribs are horizontally arranged, the back ribs are connected through connecting codes, and the joint parts of the adjacent back ribs are not arranged on a longitudinal line; the opposite-pulling screw rod is provided with threads in the whole body and is connected with the reinforcing nut in a matched manner, and on the basis, the opposite-pulling screw rod, the back ridge, the reinforcing nut and the bolt hole are matched to reinforce the aluminum die system; the column hoop consists of four hoop plates connected end to end, the tail end of each hoop plate is provided with a turnover part, the head end of each hoop plate is provided with a fixing part, and the fixing parts are provided with a group of hoop holes which are arranged in parallel;
the material of the back ridge is Q235, the section size of the back ridge is 60 multiplied by 40mm, and the thickness of the rectangular tube is 2.5mm; the material of the column hoop is Q500D.
Furthermore, in the reinforcing device, the materials of the back ridge and the column hoop and the matched aluminum template are determined through calculation design, wherein in the casting process, the nearest part of the back ridge or the column hoop used by the column mould system to the ground is the most dangerous part in the whole aluminum mould system frame structure, the back ridge or the column hoop at the position is used for calculation, and a simple beam mechanical model is adopted as a calculation model, and the requirements are that:
The flexural strength should meet the requirements of equation 1:
equation 1
Wherein: -the design value (n·mm) of the most unfavorable bending moment of the back rib or column hoop is calculated according to the basic combination of loads;
-back ridge or collar cross section moment resistance (mm 3);
-back ridge or collar normal stress (N/mm. Mu.);
the design value (N/mm, square) of the bending strength of the steel should be the value according to the GB50017 of the current national standard of design Specification for Steel construction;
Shear strength should meet the requirements of equation 2:
Equation 2
Wherein: v-calculating a shear design value (N) for the cross section acting along the web plane;
-calculating the area moment (mm 3) of the centering and shaft at the shear stress point Mao Jiemian above;
-back ridge or collar Mao Jiemian moment of inertia (mm 4);
-back rib or collar web thickness (mm);
-back ridge or column hoop shear stress calculated as basic combination of loads (N/mm 2);
the design value (N/mm, square) of the shearing strength of the steel should be the value according to the GB 50017 of the current national standard of design Specification for Steel construction;
The deformation should meet the requirement of equation 3:
Equation 3
Wherein: -equipartition line load standard value (N/mm);
-modulus of elasticity (N/mm) of the steel material;
-back rib or collar section moment of inertia (mm 4);
-calculating the span (mm) of the back ridge or collar;
-back rib or column hoop deflection calculated value (mm), calculated according to load standard combination;
-allowable deflection (mm).
Preferably, in step S2, when the wall body height exceeds 3.3m, a height-connecting plate is additionally arranged at the top end of the wall template; the height connecting plate is an aluminum template, namely the height connecting plate comprises a working panel, a side rib and a panel reinforcement, a plurality of through holes with the diameter of 16.5mm are formed in the side rib, and the through holes, the pins and the pin pieces are matched and connected with the wall template.
Preferably, in step S3, the beam side templates are laid horizontally, the back edges used by the beam side templates are arranged horizontally, the maximum length of the beam side templates is 1200mm, the beam side templates are provided with 1-2 back edges, the longitudinal distance between the two back edges is not more than 550mm at maximum, in addition, the lower end of the beam bottom support head template is provided with a beam bottom early dismantling head template, and a support rod is arranged below the beam bottom early dismantling head template.
More preferably, the top template has a thickness of 100mm, 120mm and 150mm, the maximum specification of the top template is 400 multiplied by 1000mm, the top template system further comprises a top template early-dismantling head template, the lower end of the top template early-dismantling head template is provided with a supporting rod, and the top template early-dismantling head template is arranged below the keels.
Further, when the support system is applied to a beam die system: when the width of the beam section is not more than 400mm, the beam bottom template is provided with a single row of support rods; when the cross section of the beam exceeds 400mm, the bottom of the beam is provided with double rows of support rods; when the width of the cross section of the beam is 300mm, the maximum distance between every two adjacent support rods in the single row of support rods is 1000mm; when the width of the beam section is 400mm, 500mm and 600mm, in the double-row supporting rods, the maximum distance between two adjacent supporting rods of each row of supporting rods is not more than 800mm;
when the support system is applied to a top die system, the horizontal distance between two adjacent support rods is not more than 1000mm.
Furthermore, in the support system, three fixed disc buckles are arranged on the outer tube of each support rod, a horizontal pull rod is connected between the fixed disc buckles positioned on the same horizontal plane on two adjacent support rods, and the standard length of the horizontal pull rod is 1000mm, namely, in the support system, the maximum distance between the two adjacent support rods is 1000mm;
In addition, a plurality of connecting holes are uniformly formed in each fixing disc buckle according to the circumference, a group of connecting plates which are arranged in parallel are arranged at two ends of the horizontal pull rod, a group of mounting holes with the same diameters as the connecting holes are formed in the connecting plates, when the fixing disc buckles are connected with the horizontal pull rod, the fixing disc buckles are arranged between the group of connecting plates, the connecting holes and the mounting holes are coaxial, and fixing pins with the matched diameters are used for simultaneously inserting the connecting holes and the mounting holes, so that one end of the horizontal pull rod is connected with the fixing disc buckles;
furthermore, the adjusting assembly comprises a group of first adjusting holes which are parallel and uniformly distributed on the inner tube, a group of second adjusting holes which are parallel and uniformly distributed on the outer tube, and bolts matched with the first adjusting holes and the second adjusting holes, and when the height of the inner tube is determined, the bolts are matched with the first adjusting holes and the second adjusting holes to fix and limit the inner tube;
On the basis, when the support system is applied to a top die system, the size of the support rod is obtained by performing strength verification through calculation by using a compression bar accounting model, and when the specification of the top die plate is 400 multiplied by 1000mm, the maximum pressure at the top of the support rod is as follows:
Equation 4
Wherein: -maximum pressure at the top of the support bar;
-a structural importance coefficient;
-standard axial force values generated by permanent load of the working scaffold upright;
-standard values of axial force generated by variable load of the working scaffold upright;
and (3) calculating the bearing capacity and stability of the support rod:
The slenderness ratio of the support rod:
equation 5
Wherein: -a strut slenderness ratio;
-the support rod calculates a length coefficient;
h, step length value of a horizontal pull rod on the support rod;
i-the radius of gyration of the cross section (cm) of the support rod;
stability coefficient can be obtained from the table of the inspection standard of the safety technical Specification of the fastener type steel pipe scaffold for building construction x = 0.447；
When not considering wind load, the stability requirement of bracing piece:
equation 6
Wherein: -calculated compressive strength of support rod (N/mm 2);
N is the maximum pressure at the top of the supporting rod;
-the stability factor of the axial compression of the support rod;
a-the net cross-sectional area of the support rod (cm 2);
[f] -a design value of the compressive strength of the support rod;
In addition, in the process that the support system is applied to the top die system, the shearing bearing capacity of the bolt is required to be checked, wherein the diameter of the bolt is 12mm, and the cross section area is A 1=113.097mm2;
Shear resistance of the plug pin:
equation 7
Wherein: -shear strength (kN) of the pin;
N is the maximum pressure at the top of the supporting rod;
A 1 -support bar net cross-sectional area (cm 2).
Preferably, in the support system at the adjacent position of the top die system and the beam die system, at least three horizontal pull rods are used for connecting a support rod for supporting the keel and a support rod for supporting the beam bottom support head template, the horizontal pull rods are connected with the support rod by using a cross buckle, and the length of the horizontal pull rods is 1000mm;
in addition, at the end of the top die system and the end of the beam die system, the support rods used in each system are connected by using at least three horizontal pull rods, and the horizontal pull rods and the support rods are connected by using cross buckles.
The invention has the beneficial effects that:
Compared with the traditional wood forms, the frame structure construction process provided by the invention has the advantages that the full aluminum form system is adopted, the aluminum form has good stability, high bearing capacity and high recycling rate, the installation is simple, the construction process is more environment-friendly, the formed section size and flatness of the concrete after construction are good, the supporting system arranged according to the requirement is adopted for matched construction, the construction safety can be improved, the integral construction period of the building can be effectively reduced, the integral construction quality is improved, and the construction cost is reduced; on the basis, the construction process of the frame structure under the aluminum alloy building template system provided by the invention introduces the concept of step length and the horizontal pull rod for auxiliary support for the support system when the layer height exceeds 3.3m, and has certain guiding significance on the construction process of the frame structure under the aluminum alloy building template system with the layer height exceeding 3.3 m.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an aluminum form in the present invention;
FIG. 2 is a schematic front view of a reinforcing structure for a wall form in accordance with the present invention;
FIG. 3 is a schematic side view of a reinforcing structure for a wall form in accordance with the present invention;
FIG. 4 is a schematic view of the reinforcement structure of the pillar form of the present invention;
FIG. 5 is a schematic diagram of a column collar structure of a column template of the present invention;
FIG. 6 is a schematic diagram of the diagonal bracing structure of the large section column form of the present invention;
FIG. 7 is a schematic view of a single row support structure for a center sill module in accordance with the present invention;
FIG. 8 is a schematic view of a double row support structure for a center sill form in accordance with the present invention;
FIG. 9 is a schematic illustration of a multi-beam cross-support structure for a beam form in accordance with the present invention;
FIG. 10 is a schematic view of a supporting structure of a top mold plate according to the present invention;
FIG. 11 is a schematic view of the structure of the split screw of the present invention;
FIG. 12 is a schematic view of the connection of the horizontal tie rod and the disc buckle in the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," and "first," "second," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The application provides a frame structure construction process under an aluminum alloy building template system, which adopts an all-aluminum mould system, compared with a traditional wood mould, the aluminum mould has the advantages of good stability, high bearing capacity, high repeated utilization rate, simple installation, more environment-friendly construction process, good size and flatness of the formed section of the concrete after construction, and the safety of construction can be improved by adopting a supporting system arranged according to the requirement for matched construction, the whole construction period of the building can be effectively reduced, the whole construction quality is improved, and the construction cost is reduced; on the basis, the construction process of the frame structure under the aluminum alloy building template system provided by the application introduces the concept of step length and the horizontal pull rod for auxiliary support for the support system when the layer height exceeds 3.3m, and has certain guiding significance on the construction process of the frame structure under the aluminum alloy building template system with the layer height exceeding 3.3 m.
The technical scheme provided by the invention will be described in detail below with reference to the accompanying drawings.
The application discloses a frame structure construction process under an aluminum alloy building template system, which is applied to building construction with the layer height of more than 3.3m, and is characterized in that in the construction process, the method for splicing the building templates and the containing types of the building templates is the prior art, the application is based on the existing frame structure construction process, the fixing and supporting structure of the building construction frame structure with the layer height of more than 3.3m is designed by adopting the aluminum alloy building templates, and the frame structure construction process comprises the following steps:
S1, preparing construction;
drawing a structural drawing according to construction topography, partitioning and numbering the aluminum mould system and the supporting system which are qualified for acceptance according to the structural drawing, and then paying out the structural line and the control line at a construction site according to drawing requirements to form a construction datum line taking the structural line and the control line as a frame.
The aluminum mould system comprises a wall mould system, a column mould system, a beam mould system and a top mould system; the structural line comprises an axis, a column side line, liang Bianxian and a central line of the supporting system, and the control line is a construction reference line which is separated from part of the structural line by a certain distance and is arranged in parallel, so that the construction reference line is convenient to reference and control in the construction process, and generally, the control line is arranged in parallel at a distance of 500mm from the structural line.
In addition, the aluminum mould plate is prefabricated according to the technological requirements of an aluminum mould system, specifically, as shown in fig. 1, the single aluminum mould plate consists of a working panel 101, a side rib 102 and a panel reinforcing rib 103, one side of the working panel 101 is in direct contact with concrete, and a bolt hole is preset in the working panel 101; the side ribs 102 are provided with a plurality of through holes with the diameter of 16.5mm, and the aluminum templates are connected and disconnected with surrounding templates through the matching of pins, pin sheets and the through holes; the section of the panel reinforcement 103 is in an n shape, the panel reinforcement 103 is arranged on the other side of the working panel 101 and is used for improving the bending rigidity of the working panel 101, and the combination of the panel reinforcement 103 and the side ribs 102 realizes the improvement of the overall rigidity and strength of the aluminum template.
The aluminum template material used in the application is 6061-T6 aluminum alloy, the thickness of the working panel 101 is 4.0mm, the thickness of the side rib 102 is 6-8mm, the height of the side rib 102 is 65mm, the maximum width of the aluminum template is 400mm, and the maximum length of the aluminum template is 2600mm; when the width of the working panel of the aluminum template is 400mm, trapezoidal reinforcing ribs 104 are arranged on the same side of the panel reinforcing ribs 103, and when the width of the working panel of the aluminum template is less than 400mm, the reinforcing ribs 104 are not arranged.
It should be noted that: according to the drawn structural drawing, aluminum templates of different specifications and models are designed and delivered by aluminum template manufacturers, and the on-site template splicing diagrams of a wall template system, a column template system, a beam template system and a top template system are provided.
S2, supporting a wall die system and a column die system;
And constructing a main reinforcement framework in a column mould structure area marked in the structural drawing paper, binding hoops on the main reinforcement framework, splicing and installing the wall mould system coated with the release agent and the aluminum mould plate of the column mould system according to the sequence from an internal corner to an external corner and from low to high according to a field mould splicing diagram of the wall mould system and the column mould system, and fastening on the wall mould plate and the column mould plate by utilizing a reinforcing device.
It should be noted that: in the drawn structural drawings, the areas of the wall form system, the column form system, the beam form system and the top form system are marked in the structural drawings according to the construction topography. The main reinforcement framework is built in a column mould structure area, hooping is carried out on the main reinforcement framework to form a conventional technical means in the building field, and the splicing sequence of the on-site aluminum templates is also a common application based on the traditional technology.
S3, supporting a beam mold system;
Rechecking the structural line of the beam die system, then installing a beam bottom internal corner template on a column template of the column die system, and splicing and installing the beam bottom template, a beam bottom external corner template, a beam side template and a beam bottom support head template according to the sequence of a field template splicing diagram of the beam die system and matching a support system;
In the installation process, the beam bottom templates are sequentially connected with the beam bottom internal corner templates through pins and pin pieces according to the field template splicing diagram of a beam mold system, when the beam bottom supporting head templates are installed between the beam bottom templates, the supporting system is utilized for supporting, the external corner templates are connected to the beam bottom templates, and the beam side templates are connected to the external corner templates and fastened through the reinforcing device.
It should be noted that: the beam bottom internal corner template, the beam bottom external corner template, the beam side template and the beam bottom supporting head template in the beam mold system are marked in the field template splicing diagram of the beam mold system, and only the beam mold system is spliced according to the field template splicing diagram of the beam mold system. The mounting structure of each aluminum template in the beam mold system and the splicing sequence of the aluminum templates are all common technical means for building construction.
In the invention, the core means of the aluminum mould building frame structure with the layer height of more than 3.3m is to strengthen a wall mould system, a column mould system and a beam mould system.
It is important in the present invention that the reinforcement means include a split screw 201, a back rib 202, a reinforcement nut 203 and a collar.
As shown in fig. 2-3, the back ridge 202 is formed by welding a set of rectangular tubes arranged in parallel, the cross section size of the back ridge 202 is 60×40mm, the material of the back ridge 202 is Q235, the thickness of the rectangular tubes is 2.5mm, and the distance between the rectangular tubes is larger than the diameter of the counter-pulling screw 201 and smaller than the outer diameter of the reinforcing nut 203. In addition, the back edges 202 are all arranged horizontally, the back edges 202 are connected through a connecting code 205, and the joint of the adjacent back edges 202 must not be on a longitudinal line.
The whole body of the counter-pulling screw 201 is provided with threads and is matched and connected with the reinforcing nut 203, and on the basis, the cooperation of the counter-pulling screw 201, the back ridge 202, the reinforcing nut 203 and the bolt holes realizes the reinforcement of an aluminum die system.
Based on the above embodiment, as shown in fig. 2-4, in the reinforcing process of the wall form and the column form, the counter-pulling screw 201 is first passed through the wall form and the column form which are parallel and oppositely arranged, the back ridge 202 is sleeved at two ends of the counter-pulling screw 201, and finally the reinforcing nuts 203 are installed at two ends of the counter-pulling screw 201, and are screwed in opposite directions, wherein the length of the counter-pulling screw 201 is 500mm greater than the wall thickness or the column side length.
In the beam mold system, the beam side templates are horizontally paved, the back edges used by the beam side templates are horizontally arranged, the maximum length of the beam side templates is 1200mm, the beam side templates are provided with 1-2 back edges, and the longitudinal distance between the two back edges is not more than 550mm at maximum.
In addition, as shown in fig. 5, the column hoop is composed of four hoop plates 204 connected end to end, the tail end of each hoop plate 204 is provided with a turnover part, the head end is provided with a fixing part, a group of hoop holes arranged in parallel are arranged on the fixing part, and the column hoop is made of Q500D.
Based on the above embodiments, the collar is a fixing component commonly used for columns in the building field, and is used in the present application in the prior art, so the method of using the collar and the performance of adjusting the side length are not explained in detail.
It is also important in the present invention that the materials of the back ridge 202 and the collar and the aluminum template matched with the back ridge 202 and the collar are determined by calculation design, wherein, in the casting process, the nearest position of the back ridge 202 or the collar used by the post mold system to the ground is the most dangerous position in the whole aluminum mold system frame structure, and the back ridge 202 or the collar at the position is used for calculation.
The accounting model used in the accounting process adopts a simply supported beam mechanical model with uniformly distributed load, and the sectional shape and the design size based on the back ridge and the column hoop are available, and the requirements are as follows:
The flexural strength should meet the requirements of equation 1:
equation 1
Wherein: -the design value (n·mm) of the most unfavorable bending moment of the back rib or column hoop is calculated according to the basic combination of loads; /(I) -Back ridge or collar cross section moment resistance (mm 3); /(I)-Back ridge or collar normal stress (N/mm. Mu.); the design value (N/mm, square) of the bending strength of the steel should be the value according to the GB50017 of the current national standard of design Specification for Steel construction;
Shear strength should meet the requirements of equation 2:
Equation 2
Wherein: v-calculating a shear design value (N) for the cross section acting along the web plane; -calculating the area moment (mm 3) of the centering and shaft at the shear stress point Mao Jiemian above; /(I) -Back ridge or collar Mao Jiemian moment of inertia (mm 4); /(I)-Back rib or collar web thickness (mm); /(I)-Back ridge or column hoop shear stress calculated as basic combination of loads (N/mm 2); /(I)The design value (N/mm, square) of the shearing strength of the steel should be the value according to the GB 50017 of the current national standard of design Specification for Steel construction;
The deformation should meet the requirement of equation 3:
Equation 3
Wherein: -equipartition line load standard value (N/mm); /(I) -Modulus of elasticity (N/mm) of the steel material; /(I)-Back rib or collar section moment of inertia (mm 4); /(I)-Calculating the span (mm) of the back ridge or collar; /(I)-Back rib or column hoop deflection calculated value (mm), calculated according to load standard combination; /(I)-Allowable deflection (mm).
The simple beam mechanical model is utilized to calculate according to the uniformly distributed load, and the concrete accounting process is as follows:
Referring to the building template construction manual and GB50666 standard execution, the side pressure of the newly poured concrete of the column is taken to be a smaller value calculated by the following steps:
，
，
In the method, in the process of the invention, Taking 25kN/m 3 for the gravity density of the concrete; /(I)Taking 4.5 hours for initial setting time according to the current practice;、/>、/> Reference to the building template construction manual and GB50666 standard; /(I) To calculate the total height from the location to the top of the freshly poured concrete, 3000mm was taken.
Therefore, referring to the standard of building template construction manual and GB50666, the side pressure constant load standard value of the newly poured concrete is as follows:；
construction live load standard value generated when pouring concrete: 。
According to the construction specification of concrete structure engineering GB50666-2011, calculating the effect design value of the load basic combination of the template:
，
In the method, in the process of the invention, Is the wind speed profile index, which is obtained by checking the construction specification of concrete structure engineering GB 50666-2011; /(I)Is the stable coefficient of the axial center compression of the support rod.
The cross-sectional shape and design size of the back ridge can be obtained, and the area moment of the center and the shaft above Mao Jiemian at the shearing stress isThe maximum distance between the opposite-pulling screws used by the column template is 600mm, and the maximum distance is taken as the calculated width, and the calculated width is calculated approximately according to uniformly distributed loads by using a simple beam mechanical model.
The equivalent average wiring load of the back edge calculated according to the span of 0.6m is as follows:
f is an effect design value of a load basic combination of a calculation template according to the construction Specification of concrete structure engineering GB50666-2011, 4.3.6;
the most unfavorable bending moment of the back edge according to the span of 0.6m is as follows:
l 1 is the calculated span (mm) of the back ridge;
The maximum bending stress of the cross section of the back ridge can be obtained by the formula 1:
wherein/> For the back ridge section resisting moment (mm 3), the bending normal stress can meet the requirement.
Maximum shear force applied by the back ridge section along the web plane:
，
The maximum shear stress of the back ridge is obtained by the formula 2:
wherein/> Is the back ridge Mao Jiemian moment of inertia (mm 4),/>The thickness (mm) of the back corrugated web is the thickness (mm), and the shearing stress can meet the requirement.
Accounting is carried out on the deformation of the back ridge:
calculating a standard value of the average wiring load: ；
the actual deformation of the back ridge can be obtained according to formula 3:
，
wherein, Is the elastic modulus (N/mm square) of the back ridge,/>Is the back ridge section moment of inertia (mm 4).
According to the specification of the building construction template safety technical Specification JGJ162-2008, the deformation of the back edge is in the allowable range.
In step S2, the materials and dimensions of the column hoop are obtained by performing a strength check through calculation, wherein in the casting process, the aluminum alloy template at the column transmits the lateral pressure of concrete to the column hoop, the column hoop is regarded as a simple beam stress with the span of 1m, the lowest position of the column hoop is checked by adopting a simple beam mechanical model with uniformly distributed loads, and the checking of the bending strength of the column hoop comprises the following steps:
The section of the column hoop is 100 multiplied by 25 multiplied by 7mm, the material is Q500D, the allowable stress is [ f s ] =420N/mm, and the allowable shear strength is [ f vs ] =350N/mm; the moment of inertia was 245cm 4 and the flexural modulus was 49cm 3.
Equivalent line load:，
The most unfavorable bending moment in 1m span of the column hoop:
l 2 is calculated span (mm) of the column collar;
maximum bending stress within 1m span of the column hoop:
wherein/> Moment (mm 3) is resisted for the section of the column hoop.
Maximum shear force within 1m span of column hoop:
，
The maximum shear stress of the column collar is obtained by the formula 2:
，
In the method, in the process of the invention, Centering and axial area moment for Mao Jiemian above the column hoop shear stress; /(I)Moment of inertia (mm 4) of the cross section of the column hoop; /(I)The thickness (mm) of the web plate of the column hoop can be obtained by the cross-sectional shape and the design size of the back ridge.
Thus, the column hoop strength meets design requirements.
In the technical scheme, the premise of the construction process of the lower frame structure of the aluminum mould system provided by the invention is that the building layer height is more than 3.3m, namely when the wall body height exceeds 3.3m, a height connecting plate is additionally arranged at the top end of the wall mould plate; the height connecting plate is an aluminum template, namely the height connecting plate comprises a working panel, a side rib and a panel reinforcement, a plurality of through holes with the diameter of 16.5mm are formed in the side rib, and the through holes, the pins and the pin pieces are matched and connected with the wall template.
S4, supporting a supporting system;
The support system is applied to a wall die system, a column die system, a beam die system and a top die system, and then the support system is built for the wall die system, the column die system and the beam die system according to the sequence from one side to the other side of construction site selection according to the field template splicing diagram of the wall die system, the column die system, the beam die system and the support system;
The support system comprises support rods 301 and inclined struts, wherein as shown in fig. 6-11, the support rods 301 are applied to a beam die system and a top die system, the support rods 301 consist of an inner tube 303, an outer tube 304, an adjusting assembly 305 and a fixed disc buckle 306, the inner tube 303 is coarsely adjusted to the height to be abutted by a beam bottom die plate through the adjusting assembly 305 during construction, horizontal pull rods 307 are arranged between two support rods 301 with the distance of more than 500mm, and the distance length between two adjacent horizontal pull rods 307 between the two support rods 301 is a step length; the diagonal brace is applied to a wall die system and a column die system used for a column with the minimum section side length exceeding 500mm, and consists of an upper diagonal brace 302, a lower diagonal brace 308 and a diagonal brace fixing point 309, wherein one ends of the upper diagonal brace 302 and the lower diagonal brace 308 are sleeved into the diagonal brace fixing point 309 during construction, and the other ends of the upper diagonal brace 302 and the lower diagonal brace 308 are fixed on the back ridge 202.
S5, supporting a top die system;
And installing the top plate internal corner templates of the top die system on the beam side templates according to the field template splicing diagram of the top die system to form an outer ring structural framework of the top die system, marking the installation positions of keels on the top plate internal corner templates, installing prefabricated keels on the top plate internal corner templates, installing the top die plates between the keels and between the keels and the top plate internal corner templates, and fixing the top die plates by matching with a supporting system.
In addition, a beam bottom early-dismantling head template is arranged at the lower end of the beam bottom supporting head template, and a supporting rod 301 is arranged below the beam bottom early-dismantling head template; the plate thickness of the top template is 100mm, 120mm and 150mm, the maximum specification of the top template is 400 multiplied by 1000mm, the top template system further comprises a top template early-dismantling head template, the lower end of the top template early-dismantling head template is provided with a supporting rod 301, and the top template early-dismantling head template is arranged below the keels.
Based on the above embodiment, in the beam mold system and the top mold system, the cooperation of the beam bottom supporting head template and the beam bottom early-dismantling head template and the cooperation of the beam bottom early-dismantling head template and the supporting rod 301 are common technical means in the existing building field, and the cooperation of the top template and the keel and the cooperation of the keel and the supporting rod 301 are brought into use in the prior art, so that the detailed explanation of the specific structure is not made.
In the technical scheme, the supporting system is used as a core of the invention, and when the supporting system is applied to a beam die system: when the width of the beam section is not more than 400mm, the beam bottom template is provided with a single row of support rods; when the cross section of the beam exceeds 400mm, the bottom of the beam is provided with double rows of support rods; when the width of the beam section is 300mm, the maximum distance between two adjacent support rods 301 in a single row of support rods is 1000mm; when the beam section width is 400mm, 500mm, 600mm, the maximum spacing between adjacent two support rods 301 of each row of support rods in the double row of support rods is not more than 800mm.
When the support system is applied in a top-mold system: the horizontal distance between two adjacent support rods 301 is not more than 1000mm, and in addition, the length of the inner tube of the support rod 301 is 1500mm.
More importantly, in the supporting system, three fixed disc buckles 306 are arranged on the outer tube of each supporting rod 301, a horizontal pull rod 307 is connected between the fixed disc buckles 306 on the same horizontal plane on two adjacent supporting rods 301, and the standard length of the horizontal pull rod 307 is 1000mm, namely, in the supporting system, the maximum distance between the two adjacent supporting rods 301 is 1000mm.
The introduction of the horizontal pull rod 307 and the step length concept on the support rod 301 is a core feature of the present application, and since the existing JGJ386-2016 "combined aluminum alloy template engineering technical specification" has mature standards for building construction templates and residential construction processes with a floor height of 3.3m or less, that is, the support rod 301 is arranged without auxiliary support of the horizontal pull rod 307, the present application is applied to building construction processes with a floor height of 3.3m or more, and due to the increase of the floor height, auxiliary support of the horizontal pull rod 307 is required, and the significance of the existence of the horizontal pull rod 307 and the step length is explained next.
As shown in fig. 12, each fixing disc buckle 306 is uniformly provided with a plurality of connection holes according to the circumference, two ends of the horizontal pull rod 307 are respectively provided with a group of parallel connection plates, a group of connection plates are provided with mounting holes with the same diameters as the connection holes, when the fixing disc buckle 306 is connected with the horizontal pull rod 307, the fixing disc buckle 306 is arranged between a group of connection plates, and simultaneously the connection holes and the mounting holes are ensured to be coaxial, and the connection holes and the mounting holes are simultaneously inserted by using the fixing pins 311 with the matched diameters, so that one end of the horizontal pull rod 307 is connected with the fixing disc buckle.
Furthermore, the adjusting component 305 includes a set of first adjusting holes that are parallel and uniformly arranged on the inner tube 303, a set of second adjusting holes that are parallel and uniformly arranged on the outer tube 304, and a bolt that is matched with the first adjusting holes and the second adjusting holes, when the height of the inner tube 303 is determined, the bolt is matched with the first adjusting holes and the second adjusting holes to fix and limit the inner tube 303.
On this basis, when the support system is applied to a top mold system, the size of the support rod 301 is obtained by performing strength verification through calculation by using a compression bar accounting model, and when the specification of the top mold is 400×1000mm, the maximum pressure at the top of the support rod is obtained according to formula 4:
，
and (3) calculating the bearing capacity and stability of the support rod:
The slenderness ratio of the support rod is obtained according to the formula 5:
namely, only the bearing capacity and stability of the supporting rod need to be considered, and h is taken as 2000.
Stability coefficient can be obtained from the table of the inspection standard of the safety technical Specification of the fastener type steel pipe scaffold for building construction x = 0.447；
According to formula 6, the stability requirement of the support rod is as follows when the wind load is not considered:
，
The strength of the supporting upright rod meets the design requirement.
In addition, in the process that the supporting system is applied to the top die system, the shearing bearing capacity of the bolt is required to be checked, wherein the diameter of the bolt is as follows=12 Mm, cross-sectional area a 1=113.097mm2;
The shear resistance of the pin is available according to equation 7:
，
the bolt shear meets the design requirement.
I.e. the top formwork support calculation meets the requirements.
Based on the above embodiment, in the support system where the top die system is adjacent to the beam die system, not less than three horizontal tie rods 307 are used between the support rods 301 for supporting the keels and the support rods 301 for supporting the beam bottom support head die plate, the horizontal tie rods 307 are connected with the support rods 301 by cross buckles 310, and the length of the horizontal tie rods 307 is 1000mm.
In addition, at the end of the top die system and the end of the beam die system, the supporting rods 301 used in each system are connected by using at least three horizontal pull rods 307, and the horizontal pull rods 307 and the supporting rods 301 are connected by using cross buckles 310; the cross 310 is also a common connector in the prior art construction, and is used herein by way of prior art, and is not explained in detail.
Thus, the initial construction of the frame structure under the aluminum alloy building template system is completed.
S6, elevation adjustment and acceptance inspection;
Adjusting the working surfaces of the templates in the column die system, the beam die system and the top die system to designed elevation according to elevation lines required by construction, and timely fastening a reinforcing device of the column die system, a reinforcing device of the wall die system, a reinforcing device of the beam die system and a fastening support system after the elevation adjustment is completed;
In addition, the verticality and levelness of the whole aluminum die system are checked and accepted.
S7, binding reinforcing steel bars of the beam mold system and the top mold system, and pouring concrete;
and after coating release agents on the beam bottom internal corner template, the beam bottom external corner template and the beam side template of the beam mold system, binding beam steel bars and placing the beam steel bars into the beam mold, casting walls and columns, casting beams, casting a top plate, and performing concrete casting in sequence, and turning over the aluminum mold system after the building construction of the current floor is completed, so that the construction cost is reduced.
In the invention, the frame structure construction process under the aluminum alloy building template system is integrally improved under the structural system of the aluminum mould, compared with the traditional wood mould, the aluminum mould has good stability, high bearing capacity, high repeated utilization rate, simple installation, more environment-friendly construction process, good size and flatness of the formed section of the concrete after construction, and the supporting system arranged according to the requirement is adopted for matched construction, so that the construction safety can be improved, the integral construction period of the building can be effectively reduced, the integral construction quality can be improved, and the construction cost can be reduced;
In addition, according to the construction process of the frame structure under the aluminum alloy building template system, when the layer height exceeds 3.3m, the concept of step length and the horizontal pull rod are introduced for the support system to assist in supporting, so that the construction process has a certain guiding significance for the template engineering application of the adjustable support frame structure with the layer height exceeding 3.3 m.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The frame structure construction process under the aluminum alloy building template system is characterized by being applied to building construction with the layer height of more than 3.3m, and comprises the following steps:
S1, preparation for construction
Drawing a structural drawing according to construction topography, numbering parts of the aluminum mould system and the supporting system which are qualified in inspection according to the structural drawing, and then paying out a structural line and a control line at a construction site according to drawing requirements to form a construction datum line taking the structural line and the control line as a frame; the aluminum mould system comprises a wall mould system, a column mould system, a beam mould system and a top mould system; the structural line comprises an axis, a column side line, liang Bianxian and a central line of the supporting system, and the control line is a construction reference line which is arranged in parallel and is separated from a part of the structural line by a certain distance; in addition, according to the drawn structural drawing, aluminum template manufacturers design and deliver aluminum templates of different specifications and models, and provide field template splicing diagrams of a wall template system, a column template system, a beam template system and a top template system;
S2, supporting wall die system and column die system
Constructing a main reinforcement framework in a column mould structure area marked in the structural drawing paper, binding hoops on the main reinforcement framework, splicing and installing a wall mould system coated with a release agent and an aluminum mould plate of the column mould system according to a field mould splicing diagram of the wall mould system and the column mould system from an internal corner to an external corner and from low to high, and fastening on the wall mould plate and the column mould plate by using a reinforcing device;
S3, supporting a beam mold system
Rechecking a structural line of a beam die system, then installing a beam bottom internal corner template on a column template of the column die system, and splicing and installing a beam bottom template, a beam bottom external corner template, a beam side template and a beam bottom support head template according to a field template splicing diagram of the beam die system in sequence;
In the installation process, the beam bottom templates are sequentially connected with the beam bottom internal corner templates by pins and pin sheets according to a field template splicing diagram of a beam mold system, when a beam bottom supporting head template is installed between the beam bottom templates, a supporting system is used for supporting, an external corner template is connected to the beam bottom templates, and a beam side template is connected to the external corner template and fastened by a reinforcing device;
S4, supporting and setting up of supporting system
The support system is applied to the wall die system, the column die system, the beam die system and the top die system, and is built according to the field template splicing diagram of the wall die system, the column die system, the beam die system and the support system and the order from one side to the other side of construction site selection;
The support system comprises support rods and inclined struts, wherein the support rods are applied to a beam die system and a top die system, each support rod consists of an inner tube, an outer tube, an adjusting assembly and a fixed disc buckle, the inner tube is coarsely adjusted to the height to be abutted against a beam bottom template through the adjusting assembly during construction, horizontal pull rods are arranged between two support rods with the distance of more than 500mm, and the distance length between two adjacent horizontal pull rods is the step length; the diagonal brace is applied to a wall die system and a column die system used by a column with the minimum section side length exceeding 500mm, and consists of an upper diagonal brace, a lower diagonal brace and a diagonal brace fixing point, wherein one ends of the upper diagonal brace and the lower diagonal brace are sleeved into the diagonal brace fixing point during construction, and the other ends of the upper diagonal brace and the lower diagonal brace are fixed on the back ridge;
S5, supporting a top die system
Installing all top plate internal corner templates of a top mold system on beam side templates according to a field template splicing diagram of the top mold system to form an outer ring structure frame of the top mold system, marking the installation positions of keels on the top plate internal corner templates, installing prefabricated keels on the top plate internal corner templates, installing the top mold between the keels and the keels, and installing the top mold between the keels and the top plate internal corner templates, and fixing by matching with a supporting system;
S6, elevation adjustment and acceptance inspection
Adjusting the working surfaces of the templates in the column mould system, the beam mould system and the top mould system to designed elevation according to elevation lines required by construction, and timely reinforcing the reinforcing devices and the supporting systems of the column mould system, the wall mould system and the beam mould system after the elevation adjustment is completed;
In addition, the verticality and the levelness of the whole aluminum mould system are checked and accepted;
S7, binding reinforcing steel bars of the beam die system and the top die system, and pouring concrete
And coating a demoulding agent on the beam bottom internal corner template, the beam bottom external corner template and the beam side template of the beam mould system, binding beam steel bars, putting the beam steel bars into the beam mould, casting walls and columns, casting beams, casting a top plate, and carrying out concrete casting in sequence, and carrying out turnover use on the aluminum mould system after the building construction of the current floor is completed.
2. The construction process of a frame structure under an aluminum alloy building template system according to claim 1, wherein: prefabricating an aluminum template according to the process requirements of an aluminum template system and a supporting system, wherein the single aluminum template consists of a working panel, side ribs and panel reinforcement, one side of the working panel is in direct contact with concrete, and a bolt hole is preset in the working panel; the side ribs are provided with a plurality of through holes with the diameter of 16.5mm, and the aluminum templates are connected and disconnected with surrounding templates through the matching of pins, pin pieces and the through holes; the section of the panel reinforcement is in an n shape, the panel reinforcement is arranged on the other side of the working panel and is used for improving the bending rigidity of the working panel, and the combination of the panel reinforcement and the side ribs realizes the improvement of the integral rigidity and the strength of the aluminum template;
The aluminum template is made of 6061-T6 aluminum alloy, the thickness of the working panel is 4.0mm, the thickness of the side rib is 6-8mm, the height of the side rib is 65mm, the maximum width of the aluminum template is 400mm, and the maximum length of the aluminum template is 2600mm; when the width of the working panel of the aluminum template is 400mm, trapezoidal reinforcing ribs are arranged on the same side of the reinforcing ribs of the panel, and when the width of the working panel of the aluminum template is less than 400mm, the reinforcing ribs are not arranged.
3. The construction process for the frame structure under the aluminum alloy building template system according to claim 2, wherein the construction process comprises the following steps: the reinforcing device comprises a counter-pulling screw rod, back ribs, reinforcing nuts and column hoops, wherein the back ribs are formed by welding a group of rectangular pipes which are arranged in parallel, the distance between the group of rectangular pipes is larger than the diameter of the counter-pulling screw rod and smaller than the outer diameter of the reinforcing nuts, in addition, the back ribs are horizontally arranged, the back ribs are connected through connecting codes, and the joints of the adjacent back ribs are not arranged on a longitudinal line; the opposite-pulling screw rod is provided with threads in the whole body and is connected with the reinforcing nut in a matched manner, and on the basis, the opposite-pulling screw rod, the back ridge, the reinforcing nut and the bolt hole are matched to reinforce the aluminum die system; the column hoop consists of four hoop plates connected end to end, the tail end of each hoop plate is provided with a turnover part, the head end of each hoop plate is provided with a fixing part, and the fixing parts are provided with a group of hoop holes which are arranged in parallel;
the material of the back ridge is Q235, the section size of the back ridge is 60 multiplied by 40mm, and the thickness of the rectangular tube is 2.5mm; the material of the column hoop is Q500D.
4. A frame construction process under an aluminum alloy building formwork system as claimed in claim 3, wherein:
In the reinforcing device, the materials of the back ridge and the column hoop and the matched aluminum template are determined through calculation design, wherein in the casting process, the nearest part of the back ridge or the column hoop used by the column mould system to the ground is the most dangerous part in the whole aluminum mould system frame structure, the back ridge or the column hoop at the position is used for calculation, and a simple beam mechanical model is adopted as a calculation model, and the requirements are as follows:
The flexural strength should meet the requirements of equation 1:
equation 1
Wherein: -the design value (n·mm) of the most unfavorable bending moment of the back rib or column hoop is calculated according to the basic combination of loads;
-back ridge or collar cross section moment resistance (mm 3);
-back ridge or collar normal stress (N/mm. Mu.);
the design value (N/mm, square) of the bending strength of the steel should be the value according to the GB50017 of the current national standard of design Specification for Steel construction;
Shear strength should meet the requirements of equation 2:
Equation 2
Wherein: v-calculating a shear design value (N) for the cross section acting along the web plane;
-calculating the area moment (mm 3) of the centering and shaft at the shear stress point Mao Jiemian above;
-back ridge or collar Mao Jiemian moment of inertia (mm 4);
-back rib or collar web thickness (mm);
-back ridge or column hoop shear stress calculated as basic combination of loads (N/mm 2);
the design value (N/mm, square) of the shearing strength of the steel should be the value according to the GB 50017 of the current national standard of design Specification for Steel construction;
The deformation should meet the requirement of equation 3:
Equation 3
Wherein: -equipartition line load standard value (N/mm);
-modulus of elasticity (N/mm) of the steel material;
-back rib or collar section moment of inertia (mm 4);
-calculating the span (mm) of the back ridge or collar;
-back rib or column hoop deflection calculated value (mm), calculated according to load standard combination;
-allowable deflection (mm).
5. The construction process of the frame structure under the aluminum alloy building template system according to claim 4, wherein the construction process comprises the following steps: in the step S2, when the height of the wall body exceeds 3.3m, a height connecting plate is additionally arranged at the top end of the wall template; the height connecting plate is an aluminum template, namely the height connecting plate comprises a working panel, a side rib and a panel reinforcement, a plurality of through holes with the diameter of 16.5mm are formed in the side rib, and the through holes, the pins and the pin pieces are matched and connected with the wall template.
6. The construction process of the frame structure under the aluminum alloy building template system according to claim 5, wherein the construction process comprises the following steps: in the step S3, the beam side templates are horizontally paved, the back edges used by the beam side templates are horizontally arranged, the maximum length of the beam side templates is 1200mm, the beam side templates are provided with 1-2 back edges, the longitudinal distance between the two back edges is not more than 550mm at maximum, in addition, the lower end of the beam bottom support head template is provided with a beam bottom early-dismantling head template, and a support rod is arranged below the beam bottom early-dismantling head template.
7. The construction process of the frame structure under the aluminum alloy building template system according to claim 6, wherein the construction process comprises the following steps: the plate thickness of the top template is 100mm, 120mm and 150mm, the maximum specification of the top template is 400 multiplied by 1000mm, the top template system further comprises a top template early-dismantling head template, a supporting rod is arranged at the lower end of the top template early-dismantling head template, and the top template early-dismantling head template is arranged below the keels.
8. The construction process for the frame structure under the aluminum alloy building template system according to claim 7, wherein: when the support system is applied to a beam die system: when the width of the beam section is not more than 400mm, the beam bottom template is provided with a single row of support rods; when the cross section of the beam exceeds 400mm, the bottom of the beam is provided with double rows of support rods; when the width of the cross section of the beam is 300mm, the maximum distance between every two adjacent support rods in the single row of support rods is 1000mm; when the width of the beam section is 400mm, 500mm and 600mm, in the double-row supporting rods, the maximum distance between two adjacent supporting rods of each row of supporting rods is not more than 800mm;
when the support system is applied to a top die system, the horizontal distance between two adjacent support rods is not more than 1000mm.
9. The construction process for the frame structure under the aluminum alloy building template system according to claim 8, wherein the construction process comprises the following steps: in the support system, three fixed disc buckles are arranged on the outer tube of each support rod, a horizontal pull rod is connected between the fixed disc buckles on the same horizontal plane on two adjacent support rods, and the standard length of the horizontal pull rod is 1000mm, namely in the support system, the maximum distance between the two adjacent support rods is 1000mm;
In addition, a plurality of connecting holes are uniformly formed in each fixing disc buckle according to the circumference, a group of connecting plates which are arranged in parallel are arranged at two ends of the horizontal pull rod, a group of mounting holes with the same diameters as the connecting holes are formed in the connecting plates, when the fixing disc buckles are connected with the horizontal pull rod, the fixing disc buckles are arranged between the group of connecting plates, the connecting holes and the mounting holes are coaxial, and fixing pins with the matched diameters are used for simultaneously inserting the connecting holes and the mounting holes, so that one end of the horizontal pull rod is connected with the fixing disc buckles;
furthermore, the adjusting assembly comprises a group of first adjusting holes which are parallel and uniformly distributed on the inner tube, a group of second adjusting holes which are parallel and uniformly distributed on the outer tube, and bolts matched with the first adjusting holes and the second adjusting holes, and when the height of the inner tube is determined, the bolts are matched with the first adjusting holes and the second adjusting holes to fix and limit the inner tube;
On the basis, when the support system is applied to a top die system, the size of the support rod is obtained by performing strength verification through calculation by using a compression bar accounting model, and when the specification of the top die plate is 400 multiplied by 1000mm, the maximum pressure at the top of the support rod is as follows:
Equation 4
Wherein: -maximum pressure at the top of the support bar;
-a structural importance coefficient;
-standard axial force values generated by permanent load of the working scaffold upright;
-standard values of axial force generated by variable load of the working scaffold upright;
and (3) calculating the bearing capacity and stability of the support rod:
The slenderness ratio of the support rod:
equation 5
Wherein: -a strut slenderness ratio;
-the support rod calculates a length coefficient;
h, step length value of a horizontal pull rod on the support rod;
i-the radius of gyration of the cross section (cm) of the support rod;
stability coefficient can be obtained from the table of the inspection standard of the safety technical Specification of the fastener type steel pipe scaffold for building construction x = 0.447；
When not considering wind load, the stability requirement of bracing piece:
equation 6
Wherein: -calculated compressive strength of support rod (N/mm 2);
N is the maximum pressure at the top of the supporting rod;
-the stability factor of the axial compression of the support rod;
a-the net cross-sectional area of the support rod (cm 2);
[f] -a design value of the compressive strength of the support rod;
In addition, in the process that the support system is applied to the top die system, the shearing bearing capacity of the bolt is required to be checked, wherein the diameter of the bolt is 12mm, and the cross section area is A 1=113.097mm2;
Shear resistance of the plug pin:
equation 7
Wherein: -shear strength (kN) of the pin;
N is the maximum pressure at the top of the supporting rod;
A 1 -support bar net cross-sectional area (cm 2).
10. The construction process for the frame structure under the aluminum alloy building template system according to claim 9, wherein: in the support system at the adjacent position of the top die system and the beam die system, a support rod for supporting a keel is connected with a support rod for supporting a beam bottom support head template by using at least three horizontal pull rods, the horizontal pull rods are connected with the support rod by using cross buckles, and the length of the horizontal pull rods is 1000mm;
in addition, at the end of the top die system and the end of the beam die system, the support rods used in each system are connected by using at least three horizontal pull rods, and the horizontal pull rods and the support rods are connected by using cross buckles.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU2013206540B1 (en) * | 2013-06-26 | 2014-09-11 | Inhabit Studio Limited | An edge-formwork element with integrated channel |
| CN104594627A (en) * | 2014-12-19 | 2015-05-06 | 上海隧道工程有限公司 | Integrated construction method of support system |
| CN106760530A (en) * | 2016-12-09 | 2017-05-31 | 广州市恒盛建设工程有限公司 | A kind of operating platform and its construction method for the dismounting of tower crane wall attaching rod |
| CN217631307U (en) * | 2022-07-14 | 2022-10-21 | 山西八建集团有限公司 | Quick-dismantling type supporting device for high formwork supporting of aluminum formwork |
| CN117489098A (en) * | 2023-11-11 | 2024-02-02 | 中铁二局集团有限公司 | Construction method of aluminum alloy template of high-rise residence |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2013206540B1 (en) * | 2013-06-26 | 2014-09-11 | Inhabit Studio Limited | An edge-formwork element with integrated channel |
| CN104594627A (en) * | 2014-12-19 | 2015-05-06 | 上海隧道工程有限公司 | Integrated construction method of support system |
| CN106760530A (en) * | 2016-12-09 | 2017-05-31 | 广州市恒盛建设工程有限公司 | A kind of operating platform and its construction method for the dismounting of tower crane wall attaching rod |
| CN217631307U (en) * | 2022-07-14 | 2022-10-21 | 山西八建集团有限公司 | Quick-dismantling type supporting device for high formwork supporting of aluminum formwork |
| CN117489098A (en) * | 2023-11-11 | 2024-02-02 | 中铁二局集团有限公司 | Construction method of aluminum alloy template of high-rise residence |
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