CN112282063A - Site intelligent construction process of complex space grid structure - Google Patents
Site intelligent construction process of complex space grid structure Download PDFInfo
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- CN112282063A CN112282063A CN202011130192.XA CN202011130192A CN112282063A CN 112282063 A CN112282063 A CN 112282063A CN 202011130192 A CN202011130192 A CN 202011130192A CN 112282063 A CN112282063 A CN 112282063A
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Abstract
The invention discloses a site intelligent construction process of a complex space grid structure, which comprises the following steps: dividing the net rack structure into net racks; measuring and paying off the cable on site according to the installation simulation diagram; selecting and numbering a net rack positioning point to obtain theoretical coordinate data; processing the theoretical coordinate data to obtain final coordinate data; completing the hoisting of the net rack on the building structure based on the final coordinate data; implementing temporary support; the adjacent two net racks are in butt joint and solidification; welding two adjacent net racks; removing the temporary support to complete integral stress unloading; scanning the grid structure installed on the building structure and comparing with the installation simulation diagram to adjust the grid structure. The invention improves the installation precision, accelerates the construction speed, has low cost and ensures the construction quality.
Description
Technical Field
The invention relates to an on-site intelligent construction process of a complex space grid structure, and belongs to the field of multi-grid on-site installation.
Background
At present, as buildings are gradually complicated and large-sized, a grid structure is generally installed first, and then concrete members are installed on each grid of the grid structure. Therefore, the installation accuracy of the grid structure is a key factor for determining whether the construction can be smoothly performed and the construction quality, and particularly, when the grid structure is constructed in a complex space, the installation speed of the grid structure has a great influence on the construction speed. The traditional construction process at present is as follows: the method comprises the steps of designing the number of net racks of a net rack structure, the size of each net rack and the like according to the size of a space and the shape of a component to be installed, then positioning and correcting the construction process by adopting a plurality of 3D positioning devices, constructing the net rack structure in the space, scanning the characteristics of the net rack structure by utilizing a three-dimensional scanning device after the construction is finished, generating space position data aiming at the actual net rack structure, and designing and constructing components such as surface decoration and the like according to the generated data. In practical implementation, it can be found that the traditional construction process cannot achieve the required installation accuracy, and the construction speed is slow and needs to be improved.
Disclosure of Invention
The invention aims to provide a site intelligent construction process of a complex space grid structure, which improves the installation precision, accelerates the construction speed, has low cost and ensures the construction quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
the field intelligent construction process of the complex space grid structure is characterized by comprising the following steps of:
1) the spatial grid structure that will construct in advance on building structure divides into a plurality of racks, and each rack is good at mill's prefabricated in advance, wherein: the net rack is formed by a plurality of net rack rod pieces which are spliced in a crossed manner, and the rectangular net rack is provided with four end points;
2) carrying out on-site measurement paying-off and embedded part construction according to a mounting simulation diagram of the grid structure on the building structure given by the BIM model;
3) selecting at least one end point of the net rack as a positioning point, numbering each positioning point, and obtaining theoretical coordinate data of each positioning point of each net rack on a building structure based on a BIM (building information modeling);
4) the intelligent robot scans the assembled grid structure, compares the scanning coordinate data of each positioning point of each grid of the scanned grid structure with the theoretical coordinate data given by the BIM model, thereby performing error closure adjustment on each theoretical coordinate data in the BIM model to obtain error closure coordinate data, and then continuously adjusting the error closure coordinate data by considering the deformation factor under the action of gravity load, thereby obtaining the final coordinate data of each positioning point of each grid;
5) on site, each net rack is hoisted on the building structure based on the final coordinate data, wherein: in the hoisting process, the intelligent robot transmits the measured actual coordinate data of each positioning point of each net rack to the intelligent control equipment, so that the intelligent control equipment controls the operation of the hoisting equipment according to the received actual coordinate data, and the initial installation of each net rack on the building structure is completed by the hoisting equipment;
6) after each net rack is hung on the building structure through the fixing piece and initial installation is completed, the net rack is temporarily supported through the temporary anti-deformation supporting rods;
7) the adjacent two net racks are butted and solidified through the clamping plate assembly;
8) welding two adjacent net racks;
9) removing the temporary anti-deformation support rod to complete integral stress unloading;
10) the intelligent robot scans the grid structure installed on the building structure, compares the grid structure with an installation simulation diagram given by the BIM model, and adjusts the grid structure based on the comparison result;
11) and (6) ending.
Compared with the prior art, the invention has the advantages that:
the invention realizes the accurate installation of each net rack in the net rack structure, effectively accelerates the construction speed, improves the construction efficiency by multiple times, ensures the construction quality, and importantly greatly reduces the production cost.
Drawings
Fig. 1 is a schematic view of the field implementation of the field intelligent construction process of the complex space grid structure of the invention.
Fig. 2 is a schematic illustration of the division of the rack structure into a plurality of racks.
FIG. 3 is a schematic flow chart of the implementation of step 4).
Fig. 4 is a schematic view of rack positioning and temporary support.
Fig. 5 is a schematic view of the solidification of the butt joint between the racks.
Fig. 6 is a schematic view of the sequence of butt-joint and curing between two adjacent wire frames.
Fig. 7 is a schematic view of the butt-joint curing process shown in an enlarged scale for part a of fig. 5.
Fig. 8 is a schematic view of the inter-rack welds.
Fig. 9 is a schematic view of the welding sequence between two adjacent wire frames.
Fig. 10 is a schematic view of the welding process shown enlarged for part B in fig. 8, when the width of the gap between two adjacent grids does not meet the requirement of the width of the weld.
Fig. 11 is a schematic view of the layered welding process shown enlarged for portion B in fig. 8.
Detailed Description
The invention provides a site intelligent construction process of a complex space grid structure, which comprises the following steps:
1) the spatial grid structure that will construct in advance on building structure divides into a plurality of rack 60, and whole spatial grid structure comprises a plurality of rack 60 spelling of regular array promptly, as shown in fig. 2, rack 60 is the rectangle usually, and the quantity of rack 60 can be according to factors such as engineering scale, rack member size, transportation condition, mill's condition comprehensive determination, and each rack 60 makes in advance in the mill, wherein: the net rack 60 is formed by a plurality of net rack rods 61 which are spliced in a cross way, and the rectangular net rack 60 has four end points;
2) carrying out construction such as on-site measurement paying-off and embedded parts according to a mounting simulation diagram of the grid structure on the building structure given by the BIM model;
3) selecting at least one end point of the net rack 60 as a positioning point, numbering each positioning point, and obtaining theoretical coordinate data of each positioning point of each net rack 60 on the building structure based on a BIM model;
4) the intelligent robot 70 scans the grid structure assembled on the ground instead of the building structure, compares the scanning coordinate data of each positioning point of each grid 60 of the scanned grid structure with the theoretical coordinate data of each positioning point of each grid 60 given by the BIM model, and finds the deviation between the scanning coordinate data and the theoretical coordinate data, so as to perform error closure adjustment on each theoretical coordinate data in the BIM model to obtain error closure coordinate data, and then continuously adjusts the error closure coordinate data in consideration of the deformation factor under the action of gravity load, so as to obtain the final coordinate data of each positioning point of each grid 60, as shown in fig. 3;
5) at the site, each rack 60 completes its lifting on the building structure based on the final coordinate data, wherein: in the hoisting process, the intelligent robot 70 transmits the measured actual coordinate data of each positioning point of each net rack 60 to the intelligent control device 40, so that the intelligent control device 40 controls the operation of the hoisting device 50 according to the received actual coordinate data, that is, controls the hoisting device 50 to drive the net racks 60 to perform actions such as linear movement, horizontal 360-degree rotation and the like, so as to complete the initial installation of each net rack 60 on the building structure by means of the hoisting device 50 based on the final coordinate data, as shown in fig. 1, the gap between two adjacent net racks 60 should be controlled within a reasonable range in the initial installation process;
6) after the initial installation of each grid 60 on the floor 20 of the building structure is completed by hanging the grid 60 on the fixing member 81, the grid 60 is temporarily supported by the temporary anti-deformation support rod 80, as shown in fig. 4, the temporary anti-deformation support rod 80 is located below the floor 20 and is abutted between the grid 60 and the floor 20 of the building structure;
7) the adjacent two net racks 60 are butted and solidified through a clamping plate assembly, as shown in fig. 5 and 6;
8) the welding process is performed between two adjacent wire frames 60, as shown in fig. 8;
9) the temporary deformation-resistant support rod 80 is removed to complete the whole stress unloading;
10) the intelligent robot 70 scans the grid structure installed on the building structure and compares the grid structure with an installation simulation diagram given by the BIM model, and based on the comparison result, the grid structure is adjusted by the hoisting equipment 50 to ensure that the installation error of the grid structure is within a controllable range;
11) and finishing the construction of the grid structure.
A specific example is given below:
the field intelligent construction process of the complex space grid structure comprises the following steps:
1) dividing a grid structure constructed on a building structure into 9 rectangular grids 60 arranged regularly;
2) carrying out construction such as on-site measurement paying-off and embedded parts according to an installation simulation diagram given by the BIM model;
3) selecting 4 end points of the net rack 60 as positioning points, numbering the positioning points, and obtaining theoretical coordinate data A1, A2, A3 and A4 of the positioning points of the net rack 60 on the building structure based on a BIM model;
4) the intelligent robot 70 scans the net rack structure assembled on the ground, compares the scanned coordinate data A1-1, A2-1, A3-1 and A4-1 of each positioning point of each net rack 60 of the net rack structure with the theoretical coordinate data A1, A2, A3 and A4 of each positioning point of each net rack 60 given by the BIM model, calculates the deviation of the two, performs error closure adjustment on each theoretical coordinate data in the BIM model to obtain error closure coordinate data A1-2, A2-2, A3-2 and A4-2, and then continuously adjusts the error closure coordinate data by considering the deformation factor under the action of gravity load, so as to obtain the final coordinate data A1-3, A2-3, A3-3 and A4-3 of each positioning point of each net rack 60, as shown in FIG. 3;
5) at the site, each rack 60 completes the lifting on the building structure based on the final coordinate data, as shown in fig. 1, where: in practical implementation, for example, in the hoisting process, the hoisting device 50 is placed on a floor 20, the intelligent robot 70 is placed on the ground 10, the worker 30 can stand on a certain floor 20, the worker 30 can also check the actual coordinate data of each positioning point of each net rack 60 measured by the intelligent robot 70 through the display screen 41, and the operation of the hoisting device 50 is controlled by the intelligent control device 40 by operating the display screen 41, so as to complete the control and adjustment of the installation position of each net rack 60;
6) after the initial installation of each net rack 60 suspended on the floor 20 of the building structure through the fixing member 81 is completed, the net rack 60 is temporarily supported through the temporary deformation-resistant support rod 80;
7) the abutting solidification is carried out between two adjacent wire racks 60, as shown in fig. 5 and 6, and the abutting solidification between 6 wire racks 60 is only schematically shown in fig. 5 and 6;
8) the welding process is performed between two adjacent wire frames 60, as shown in fig. 8;
9) the temporary deformation-resistant support rod 80 is removed to complete the whole stress unloading;
10) the intelligent robot 70 scans the grid structure installed on the building structure, compares the grid structure with an installation simulation diagram given by the BIM model, and adjusts the grid structure by means of the hoisting equipment 50 based on the comparison result so as to ensure that the installation error of the grid structure is within a controllable range;
11) and (6) ending.
In the above step 7):
both ends of each net rack rod piece 61 of the net rack 60 are welded with ear plates 62, each clamping plate assembly comprises a clamping plate 63 and a bolt 64, fixing holes 620 are formed in the ear plates 62, and fixing holes (not marked in the drawing) are formed in the clamping plates 63.
As shown in fig. 5 to 7, the process of butt-joint curing between two adjacent net racks 60 by the cleat assembly includes: the ear plates 62 of two opposite rack rods 61 on two adjacent racks 60 are connected with the same clamping plate 63 by bolts 64 and fitting nuts (not shown in the figure) to fix the two opposite rack rods 61, that is, the bolts 64 pass through the clamping plate 63 and the fixing holes on the ear plates 62 and then are fitted with nuts to complete the purpose that the clamping plate 63 is connected with the ear plates 62 of the two rack rods 61, wherein: the two adjacent net racks 60 are smoothly spliced and fixed from bottom to top and from left to right, so as to reduce the deformation influence during the splicing process, in other words, the two adjacent net racks 60 are two horizontally (or left and right) adjacent net racks 60 or two vertically adjacent net racks 60, taking the 6 net racks 60 schematically shown in fig. 5 and 6 as an example, the sequence of the butt-joint and the solidification between the two adjacent net racks 60 is preferably designed as follows: a → B → C → D → E → F → G.
In the above step 8):
as shown in fig. 8 to 11, the welding process between the adjacent wire frames 60 includes:
when the gap width between two opposite rack rod pieces 61 on two adjacent racks 60 is less than or equal to the weld width threshold, that is, the weld width requirement is met, as shown in fig. 11, the connection and fixation between the two rack rod pieces 61 is realized by directly performing layered welding treatment at the gap position;
when the width of the gap between two opposite rack bars 61 on two adjacent racks 60 is greater than the threshold of the width of the weld, that is, the requirement of the width of the weld is not satisfied, as shown in fig. 10, a sealing plate 65 is additionally provided at the end of one rack bar 61 of the two opposite rack bars 61 on two adjacent racks 60, a fillet 66 is welded to the outer wall of the sealing plate 65 exposed outside the rack bar 61, so that the width D of the gap between the sealing plate 65 of the fillet 66 and the end of the other rack bar 61 is less than or equal to the threshold of the width of the weld, that is, the requirement of the width of the weld is satisfied, and then the two rack bars 61 are connected and fixed by performing a layered welding process at the gap position, as will be understood with reference.
In practical implementation, after welding the two net rack rods 61, the two net rack rods should be baked in time to remove part of the stress.
Further, the welding process between two adjacent wire frames 60 is performed in the order of middle, up and down, left and right, so as to reduce the deformation effect during the welding process, in other words, two adjacent wire frames 60 are two horizontally (or left and right) adjacent wire frames 60 or two vertically adjacent wire frames 60, as shown in fig. 9, the welding sequence between two adjacent wire frames 60 is preferably designed as follows: a → B → C.
In actual practice, the layered weld structure obtained after the layered welding process is shown as reference numeral 67 in fig. 10, and referring to fig. 11, the layered welding process includes: welding a priming layer 671, a first welding layer 672, a second welding layer 673 and a surface layer 674 from bottom to top, wherein the surface layer 674 is positioned outside the outer wall of the net rack rod piece 61.
In practical implementation, the step 11) may further include:
12) polishing a welding seam welded between two adjacent net racks 60 and repairing a primer;
13) intermediate paint and finish paint are sprayed on each net rack 60 to ensure the attractive effect of the welding line;
14) each of the net frames 60 is attached with a member such as a surface layer decoration, and the member includes a panel.
In the present invention, the net support 60 is a steel net support, the net support 60 is generally rectangular, and the net support 60 is formed of a plurality of net support rods 61 that are cross-spliced, as will be understood with reference to fig. 2.
In the present invention, the building structure generally includes a floor 20, as shown in FIG. 1.
In the present invention, the display screen 41 is a display screen having a touch function and a signal processing and transmitting function, the intelligent control device 40 is an electronic control device having a signal and data processing and transmitting function, the intelligent robot 70 is an electronic robot having a spatial position scanning function and a data transmitting function, and the lifting device 50 is a lifting device having a signal receiving and transmitting function, and in short, the display screen 41, the intelligent control device 40, the intelligent robot 70 and the lifting device 50 are well known or existing devices in the art, and therefore, they are not described in detail herein.
In the present invention, the BIM model is a design model commonly used in the field of building construction, and thus will not be described in detail herein.
Compared with the prior art, the invention has the advantages that:
the invention realizes the accurate installation of each net rack in the net rack structure, the installation accuracy can be controlled within 6mm, wherein 90% of the net rack installation accuracy can be controlled within 3mm, the construction speed is effectively accelerated, the construction efficiency is improved by nearly 10 times, the construction quality is guaranteed, and importantly, the production cost is reduced by more than 50%.
The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solutions of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.
Claims (7)
1. The field intelligent construction process of the complex space grid structure is characterized by comprising the following steps of:
1) the spatial grid structure that will construct in advance on building structure divides into a plurality of racks, and each rack is good at mill's prefabricated in advance, wherein: the net rack is formed by a plurality of net rack rod pieces which are spliced in a crossed manner, and the rectangular net rack is provided with four end points;
2) carrying out on-site measurement paying-off and embedded part construction according to a mounting simulation diagram of the grid structure on the building structure given by the BIM model;
3) selecting at least one end point of the net rack as a positioning point, numbering each positioning point, and obtaining theoretical coordinate data of each positioning point of each net rack on a building structure based on a BIM (building information modeling);
4) the intelligent robot scans the assembled grid structure, compares the scanning coordinate data of each positioning point of each grid of the scanned grid structure with the theoretical coordinate data given by the BIM model, thereby performing error closure adjustment on each theoretical coordinate data in the BIM model to obtain error closure coordinate data, and then continuously adjusting the error closure coordinate data by considering the deformation factor under the action of gravity load, thereby obtaining the final coordinate data of each positioning point of each grid;
5) on site, each net rack is hoisted on the building structure based on the final coordinate data, wherein: in the hoisting process, the intelligent robot transmits the measured actual coordinate data of each positioning point of each net rack to the intelligent control equipment, so that the intelligent control equipment controls the operation of the hoisting equipment according to the received actual coordinate data, and the initial installation of each net rack on the building structure is completed by the hoisting equipment;
6) after each net rack is hung on the building structure through the fixing piece and initial installation is completed, the net rack is temporarily supported through the temporary anti-deformation supporting rods;
7) the adjacent two net racks are butted and solidified through the clamping plate assembly;
8) welding two adjacent net racks;
9) removing the temporary anti-deformation support rod to complete integral stress unloading;
10) the intelligent robot scans the grid structure installed on the building structure, compares the grid structure with an installation simulation diagram given by the BIM model, and adjusts the grid structure based on the comparison result;
11) and (6) ending.
2. The on-site intelligent construction process of a complex space grid structure according to claim 1, characterized in that:
in the step 5), a worker views actual coordinate data of each positioning point of each net rack measured by the intelligent robot through the display screen, and controls the operation of the hoisting equipment by the intelligent control equipment by operating the display screen, so as to control and adjust the installation position of each net rack.
3. The on-site intelligent construction process of a complex space grid structure according to claim 1, characterized in that:
in the step 7):
the two ends of each net rack rod piece of the net rack are welded with lug plates, and each clamping plate assembly comprises a clamping plate and a bolt;
the process of butt joint solidification between two adjacent rack through splint subassembly includes: borrow between the otic placode of two relative rack member bars on two adjacent racks by the bolt to be connected with same splint to realize fixing between two relative rack member bars, wherein: the abutting solidification between two adjacent net racks is spliced and fixed from bottom to top and from left to right.
4. The on-site intelligent construction process of a complex space grid structure according to claim 1, characterized in that:
in the step 8):
the process of welding treatment between two adjacent net racks comprises the following steps:
when the gap width between two opposite net rack rod pieces on two adjacent net racks is less than or equal to the weld width threshold, directly carrying out layered welding treatment at the gap position to realize the connection and fixation between the two net rack rod pieces;
when the gap width between two relative rack rod pieces on two adjacent racks is greater than the threshold value of the width of the welding seam, the end part of one of the two relative rack rod pieces on two adjacent racks is additionally provided with a sealing plate, the sealing plate is exposed out of the outer wall of the rack rod piece to weld the fillet, so that the width of the seam between the sealing plate of the fillet and the end part of the other rack rod piece is less than or equal to the threshold value of the width of the welding seam, and then the seam is subjected to layered welding treatment to realize the connection fixation between the two rack rod pieces.
5. The on-site intelligent construction process of a complex space grid structure according to claim 4, characterized in that:
the welding treatment between two adjacent net racks is carried out according to the sequence of first middle, then up and down, then left and right.
6. The on-site intelligent construction process of a complex space grid structure according to claim 4, characterized in that:
the layered welding process includes: and welding the bottom layer, the first welding layer, the second welding layer and the surface layer from bottom to top.
7. The on-site intelligent construction process of a complex space grid structure according to any one of claims 1 to 6, characterized in that:
after the step 11), the method further comprises the following steps:
12) polishing a welding seam obtained by welding two adjacent net racks and repairing a primer;
13) spraying intermediate paint and finish paint on each net rack;
14) a member is mounted on each of the net frames, the member including a panel.
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Application publication date: 20210129 |