CN113216487A - Laminated slab overhanging joist steel construction method based on BIM technology - Google Patents
Laminated slab overhanging joist steel construction method based on BIM technology Download PDFInfo
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- CN113216487A CN113216487A CN202110464864.9A CN202110464864A CN113216487A CN 113216487 A CN113216487 A CN 113216487A CN 202110464864 A CN202110464864 A CN 202110464864A CN 113216487 A CN113216487 A CN 113216487A
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
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- 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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
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- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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Abstract
The invention relates to the technical field of building engineering; specifically discloses a laminated slab overhanging joist steel construction method based on BIM technology, which specifically comprises the following steps: establishing a model; combining the models; performing collision analysis; according to the design scheme of the cantilever crane, calculating the stress of the anchor ring, and accurately placing the position of the anchor ring to be used as a reference object of the laminated slab model; building a laminated slab support frame and a cast-in-place strip formwork model, optimizing the positions of the vertical rods and the support beams, and carrying out encryption setting on the vertical rods of the support frame at the anchor ring position to play a role in back jacking of the floor slab; data analysis and collision optimization; step S5, processing, positioning, manufacturing and molding; mounting a laminated slab; binding gluten, pouring concrete and maintaining; and erecting an overhanging frame. The invention can effectively avoid collision with the steel bar, the embedded pipeline and the slab bottom keel, improve the construction efficiency and avoid the waste of manpower, financial resources and time.
Description
Technical Field
The invention relates to the technical field of erection of cantilever frames, in particular to a construction method of laminated slab cantilever I-shaped steel based on a BIM (building information modeling) technology.
Background
In assembled superimposed sheet work progress, the reinforcing bar system is complicated, the spool is in large quantity, the frame I-steel anchor ring of encorbelmenting generally adopts back trompil construction technology, do not carry out deepening consideration in the design stage, there is certain structural safety hidden danger, the back trompil degree of difficulty is big in addition, the trompil position probably conflicts with the reinforcing bar, pre-buried pipeline, board bottom keel position, lead to the unable normal installation of anchor ring, the efficiency of construction is low, probably lead to repeated trompil, influence the appearance quality of continuous beam concrete, the trompil expense is higher simultaneously, the input of cost and resource has been increased, there are a great deal of problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a construction method of laminated slab overhanging I-shaped steel based on the BIM technology, effectively avoiding collision with steel bars, embedded pipelines and slab bottom keels, improving the construction efficiency and avoiding waste of manpower, financial resources and time.
The technical problem to be solved by the invention is as follows:
a laminated slab overhanging joist steel construction method based on a BIM technology specifically comprises the following steps:
step S1, establishing a model; sequentially creating a laminated plate part model, a cast-in-place part model and a pipeline model to obtain a complete model;
step S2, combining the models;
step S3, collision analysis;
according to the design scheme of the cantilever crane, calculating the stress of the anchor ring, and accurately placing the position of the anchor ring to be used as a reference object of the laminated slab model;
building a laminated slab support frame and a cast-in-place strip formwork model, optimizing the positions of the vertical rods and the support beams, and carrying out encryption setting on the vertical rods of the support frame at the anchor ring position to play a role in back jacking of the floor slab;
step S4, analyzing data and optimizing collision;
step S5, processing, positioning, manufacturing and molding;
step S6, mounting the laminated plate;
step S7: gluten binding, concrete pouring and maintenance
Step S8: and erecting an overhanging frame.
In some possible embodiments, the anchor rod is in a U-shaped structure in step S3, and includes two screw rods, and a connecting rod connected with the two screw rods; the distance between the two screws is D, the section width of the overhanging I-shaped steel is D, and D-D is 20 mm; by extracting the data, a DWG file is exported, and an accurate collision position is identified.
In some possible embodiments, the step S4 specifically refers to:
after the data of the collision analysis is exported, carrying out optimization adjustment in the collision analysis data according to the collision depth of each pore channel and the components such as pipelines, steel bars and the like;
inputting the stress of an anchor ring of the cantilever frame, optimizing the reinforcement at the position of the anchor ring according to the mechanical calculation of structural design software, analyzing according to the relevant mechanical calculation after optimization, performing secondary positioning, optimizing and reinforcing the reinforcement, and adding anchor ring positioning reinforcement;
outputting optimized anchor ring and laminated slab steel bar drawings and statistics of blanking length and specification.
In some possible embodiments, the step S1 specifically refers to:
according to the received and checked design drawing, building a model for the superposed plate concrete outline, the superposed plate truss, the bottom plate steel bar system, the embedded pipeline, the cast-in-place partial concrete outline and the steel bar system, the superposed plate support frame and the cantilever frame according to a 1:1 ratio by using a BIM technology, determining the size of the model, and controlling the precision error to be in millimeter level;
wherein, the establishing sequence of the model is as follows: coordinate positioning, building of a laminated slab model, building of a cast-in-place part model, building of a pipeline model, building of a laminated slab support frame and a cantilever frame model, and building of a complete construction model.
In some possible embodiments, the laminated plate concrete profile laminated plate comprises an outer contour, a pre-embedded wire box, a reserved wire pipe hole, a reserved wire releasing hole, a rough surface and an edge chamfer;
the laminated slab steel bar system comprises a truss lower chord steel bar, a truss upper chord steel bar, a truss web steel bar, an additional steel bar and a slab bottom steel bar;
the embedded pipeline comprises a laminated slab embedded line box and a cast-in-place part embedded pipeline;
the cast-in-place partial concrete profile and steel bar system comprises concrete cast-in-place belt concrete, reinforcing plate belt concrete and plate gluten;
the laminated slab support frame comprises upright posts, cross rods, main beams and secondary beams;
the cantilever frame model comprises an anchor ring, I-shaped steel, a steel pipe, a safety net and a pocket net protection.
In some possible embodiments, the step S2 specifically refers to: and integrating according to the primary design drawing of the laminated slab according to the serial number sequence, and integrating the established concrete outline model, the steel bar system and the pre-buried pipeline model into a whole.
In some possible embodiments, the step S5 specifically refers to: and (3) processing and welding reinforcing steel bars of the anchor ring and the laminated slab according to the optimized drawing and the optimized blanking list, reliably connecting the anchor ring and the reinforcing steel bars of the laminated slab through positioning reinforcing steel bars, accurately checking by adopting a measuring instrument, putting the reinforcement cage into a sizing template after ensuring accurate positioning, and pouring the concrete of the laminated slab.
In some possible embodiments, the step S6 specifically refers to: arranging upright posts and primary and secondary beams according to the laminated slab support frame model; and installing a cast-in-place strip position template and a support, and accurately installing and correcting the laminated slab by adopting a hoisting machine and a hoisting tool.
In some possible embodiments, the step S7 specifically refers to: binding the cast-in-place part of reinforcing steel bars and the reinforcing steel bars at the positions of the anchor rings, pouring concrete after acceptance, paying attention to the fact that the reinforcing steel bars do not collide with the anchor rings during vibration, and maintaining in time after collection.
In some possible embodiments, the step S8 specifically refers to: after the strength of the concrete meets the corresponding requirement, installing I-shaped steel, and wedging a gap by using wood chips; and after the concrete strength meets the corresponding requirements, erecting a cantilever frame on the I-shaped steel.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the arrangement drawing of the anchor ring can be effectively realized, the anchor ring is pre-embedded in advance as a construction reference, and the post-tapping operation is cancelled by pre-embedding the anchor ring in advance, so that the potential safety hazard of the structure is reduced; collision is avoided during construction, a large amount of unnecessary reworking is reduced, and the construction efficiency and the forming quality are improved;
the invention can avoid repeated hole opening, thereby avoiding the influence of repeated hole opening on the appearance quality of concrete, reducing the cost of hole opening and the cost of plugging, and only cutting off and cleaning the anchor ring at the later stage;
the invention reduces the rework rate and greatly reduces the safety quality risk.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view showing the structural relationship among anchor rings, I-beams and superimposed plates according to the present invention;
wherein 1, anchor ring; 11. a screw; 12. a connecting rod; 2. i-shaped steel; 3. a laminated plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the drawings of the present invention, it should be understood that different technical features which are not mutually substituted are shown in the same drawing only for the convenience of simplifying the drawing description and reducing the number of drawings, and the embodiment described with reference to the drawings does not indicate or imply that all the technical features in the drawings are included, and thus the present invention is not to be construed as being limited thereto.
The present invention will be described in detail below.
As shown in fig. 1 and 2;
a laminated slab overhanging joist steel construction method based on a BIM technology specifically comprises the following steps:
step S1, establishing a model; sequentially creating a laminated plate part model, a cast-in-place part model and a pipeline model to obtain a complete model;
according to the received and checked design drawing, building models for the concrete outline of the laminated slab 3, the truss and bottom plate steel bar system of the laminated slab 3, the embedded pipeline, the concrete outline and steel bar system of the cast-in-place part, the supporting frame of the laminated slab 3 and the cantilever frame according to a ratio of 1:1 by using a BIM technology, determining the size of the models, and controlling the precision error to be in millimeter level;
wherein, the establishing sequence of the model is as follows: coordinate positioning, building of a laminated slab 3 model, building of a cast-in-place part model, building of a pipeline model, building of a laminated slab 3 support frame and a cantilever frame model, and building of a complete construction model.
The concrete profile of the laminated slab 3 is characterized by comprising the outer profile of the laminated slab 3, a pre-buried wire box, a reserved wire tube hole, a reserved wire releasing hole, a rough surface and an edge chamfer;
the laminated slab 3 steel bar system comprises a truss lower chord steel bar, a truss upper chord steel bar, a truss web steel bar, an additional steel bar and a slab bottom steel bar;
the embedded pipeline comprises an embedded wire box of the laminated slab 3 and a cast-in-place part embedded pipeline;
the cast-in-place partial concrete profile and steel bar system comprises concrete cast-in-place belt concrete, reinforcing plate belt concrete and plate gluten;
the support frame of the laminated slab 3 comprises upright rods, cross rods, main beams and secondary beams;
the cantilever frame model comprises an anchor ring 1, I-shaped steel 2, a steel pipe, a safety net and a pocket net protection.
Step S2, combining the models; and integrating according to the preliminary design drawing of the laminated slab 3 according to the serial number sequence, and integrating the established concrete outline model, the steel bar system and the pre-buried pipeline model into a whole.
Step S3, collision analysis;
according to the design scheme of the cantilever frame, calculating the stress of the anchor ring 1, and accurately placing the position of the anchor ring 1 to be used as a reference object of the laminated slab 3 model;
building a support frame of a laminated slab 3 and a cast-in-place strip formwork model, optimizing the positions of the vertical rods and the support beams, and carrying out encryption setting on the vertical rods of the support frame at the position of the anchor ring 1 to play a role in back jacking of the floor slab;
the anchor rod is of a U-shaped structure and comprises two screw rods 11 and a connecting rod 12 connected with the two screw rods 11; the distance between the two screw rods 11 is D, the section width of the overhanging I-shaped steel 2 is D, and D-D is 20 mm; by extracting the data, a DWG file is exported, and an accurate collision position is identified.
Step S4, carrying out data analysis and crash optimization drawing deepening; after the data of the collision analysis is exported, carrying out optimization adjustment in the collision analysis data according to the collision depth of each pore channel and the components such as pipelines, steel bars and the like;
inputting stress of an anchor ring 1 of the cantilever frame, optimizing reinforcement at the position of the anchor ring 1 according to mechanical calculation of structural design software, analyzing according to relevant mechanical calculation after optimization, performing secondary positioning, optimizing and reinforcing the reinforcement, and adding positioning reinforcement of the anchor ring 1;
outputting optimized reinforcing steel bar drawings of the anchor ring 1 and the laminated slab 3, and counting blanking length and specification;
after the position of the anchor ring 1 is optimized by combining comprehensive consideration of reinforcing steel bars, pipelines and the like, reinforcing steel bar drawings of the anchor ring 1 and the laminated slab 3 are drawn, DWG files are exported, and accurate collision positions are identified to be capable of being used as references for follow-up work.
Step S5, processing, positioning, manufacturing and molding; and (3) processing and welding reinforcing steel bars of the anchor ring 1 and the laminated slab 3 according to the optimized drawing and the optimized blanking list, reliably connecting the anchor ring 1 with the reinforcing steel bars of the laminated slab 3 through positioning reinforcing steel bars, accurately checking by adopting a measuring instrument, placing a reinforcing steel bar framework into a shaping template after ensuring that the positioning is accurate, and pouring concrete of the laminated slab 3.
Step S6, mounting the laminated slab 3; arranging vertical rods and primary and secondary beams according to the support frame model of the laminated slab 3; and installing a cast-in-place strip position template and a support, and accurately installing and correcting the laminated slab 3 by adopting a hoisting machine and a hoisting tool.
Step S7: binding gluten, pouring concrete and maintaining; binding the cast-in-place part of reinforcing steel bars and reinforcing steel bars at the position of the anchor ring 1, pouring concrete after acceptance, paying attention to the fact that the concrete does not collide with the anchor ring 1 during vibration, and maintaining in time after collection.
Step S8: erecting an overhanging frame; after the strength of the concrete meets the corresponding requirement, installing I-shaped steel 2 and wedging a gap by using wood chips; and after the concrete strength meets the corresponding requirements, erecting a cantilever frame on the I-shaped steel 2.
Such as: after the strength of the concrete reaches C10, installing I-steel 2 and wedging a gap with wood chips; and after the concrete strength reaches C15, erecting a cantilever on the I-shaped steel 2.
According to the invention, the anchor ring 1 is reserved in advance in the laminated slab 3, and the rear opening after concrete pouring is omitted, so that the potential safety hazard of the structure is avoided, and the safe operation of a construction site is ensured; the cost of back trompil and shutoff expense have been reduced, practice thrift time limit for a project and cost.
According to the invention, a complete construction model is established and completed, the collision relation is analyzed in advance, and an optimization scheme is made, so that collision is avoided in construction, a large amount of unnecessary reworking is reduced, and the construction efficiency is improved.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. A laminated slab overhanging joist steel construction method based on a BIM technology is characterized by comprising the following steps:
step S1, establishing a model; sequentially creating a laminated plate part model, a cast-in-place part model and a pipeline model to obtain a complete model;
step S2, combining the models;
step S3, collision analysis;
according to the design scheme of the cantilever crane, calculating the stress of the anchor ring, and accurately placing the position of the anchor ring to be used as a reference object of the laminated slab model;
building a laminated slab support frame and a cast-in-place strip formwork model, optimizing the positions of the vertical rods and the support beams, and carrying out encryption setting on the vertical rods of the support frame at the anchor ring position to play a role in back jacking of the floor slab;
step S4, analyzing data and optimizing collision;
step S5, processing, positioning, manufacturing and molding;
step S6, mounting the laminated plate;
step S7: gluten binding, concrete pouring and maintenance
Step S8: and erecting an overhanging frame.
2. The method for constructing a laminated slab cantilever joist steel according to the BIM technology as claimed in claim 1, wherein the anchor rod is in a U-shaped structure in step S3, and comprises two screw rods and a connecting rod connected with the two screw rods; the distance between the two screws is D, the section width of the overhanging I-shaped steel is D, and D-D is 20 mm; by extracting the data, a DWG file is exported, and an accurate collision position is identified.
3. The laminated slab cantilever joist steel construction method based on the BIM technology as claimed in claim 2, wherein the step S4 specifically refers to:
after the data of the collision analysis is exported, carrying out optimization adjustment in the collision analysis data according to the collision depth of each pore channel and the components such as pipelines, steel bars and the like;
inputting the stress of an anchor ring of the cantilever frame, optimizing the reinforcement at the position of the anchor ring according to the mechanical calculation of structural design software, analyzing according to the relevant mechanical calculation after optimization, performing secondary positioning, optimizing and reinforcing the reinforcement, and adding anchor ring positioning reinforcement;
outputting optimized anchor ring and laminated slab steel bar drawings and statistics of blanking length and specification.
4. The laminated slab cantilever joist steel construction method based on the BIM technology as claimed in claim 3, wherein the step S1 specifically refers to:
according to the received and checked design drawing, building a model for the superposed plate concrete outline, the superposed plate truss, the bottom plate steel bar system, the embedded pipeline, the cast-in-place partial concrete outline and the steel bar system, the superposed plate support frame and the cantilever frame according to a 1:1 ratio by using a BIM technology, determining the size of the model, and controlling the precision error to be in millimeter level;
wherein, the establishing sequence of the model is as follows: coordinate positioning, building of a laminated slab model, building of a cast-in-place part model, building of a pipeline model, building of a laminated slab support frame and a cantilever frame model, and building of a complete construction model.
5. The laminated slab cantilever I-steel construction method based on the BIM technology as claimed in claim 4, wherein the laminated slab concrete profile laminated slab outer contour, pre-embedded wire box, reserved wire pipe hole, reserved wire releasing hole, rough surface, edge chamfer;
the laminated slab steel bar system comprises a truss lower chord steel bar, a truss upper chord steel bar, a truss web steel bar, an additional steel bar and a slab bottom steel bar;
the embedded pipeline comprises a laminated slab embedded line box and a cast-in-place part embedded pipeline;
the cast-in-place partial concrete profile and steel bar system comprises concrete cast-in-place belt concrete, reinforcing plate belt concrete and plate gluten;
the laminated slab support frame comprises upright posts, cross rods, main beams and secondary beams;
the cantilever frame model comprises an anchor ring, I-shaped steel, a steel pipe, a safety net and a pocket net protection.
6. The laminated slab cantilever joist steel construction method based on the BIM technology as claimed in any one of claims 1 to 5, wherein the step S2 specifically refers to: and integrating according to the primary design drawing of the laminated slab according to the serial number sequence, and integrating the established concrete outline model, the steel bar system and the pre-buried pipeline model into a whole.
7. The laminated slab cantilever joist steel construction method based on the BIM technology as claimed in claim 6, wherein the step S5 specifically refers to: and (3) processing and welding reinforcing steel bars of the anchor ring and the laminated slab according to the optimized drawing and the optimized blanking list, reliably connecting the anchor ring and the reinforcing steel bars of the laminated slab through positioning reinforcing steel bars, accurately checking by adopting a measuring instrument, putting the reinforcement cage into a sizing template after ensuring accurate positioning, and pouring the concrete of the laminated slab.
8. The laminated slab cantilever joist steel construction method based on the BIM technology as claimed in claim 7, wherein the step S6 specifically refers to: arranging upright posts and primary and secondary beams according to the laminated slab support frame model; and installing a cast-in-place strip position template and a support, and accurately installing and correcting the laminated slab by adopting a hoisting machine and a hoisting tool.
9. The laminated slab cantilever joist steel construction method based on the BIM technology as claimed in claim 8, wherein: the step S7 specifically includes: binding the cast-in-place part of reinforcing steel bars and the reinforcing steel bars at the positions of the anchor rings, pouring concrete after acceptance, paying attention to the fact that the reinforcing steel bars do not collide with the anchor rings during vibration, and maintaining in time after collection.
10. The laminated slab cantilever joist steel construction method based on the BIM technology as claimed in claim 9, wherein: the step S8 specifically includes: after the strength of the concrete meets the corresponding requirement, installing I-shaped steel, and wedging a gap by using wood chips; and after the concrete strength meets the corresponding requirements, erecting a cantilever frame on the I-shaped steel.
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| CN114809300A (en) * | 2022-05-20 | 2022-07-29 | 中建八局第二建设有限公司 | Construction method of high-altitude multilayer large-cantilever steel reinforced concrete composite structure |
| CN116738527A (en) * | 2023-04-06 | 2023-09-12 | 中铁六局集团有限公司 | Automatic optimization method and system for continuous beam reinforcement collision |
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Application publication date: 20210806 |