Grid curtain wall construction method based on BIM (Building Information Modeling) technology

Abstract

The invention discloses a grid curtain wall construction method based on a BIM (Building Information Modeling) technology. The grid curtain wall construction method comprises the following steps: S1, extracting positioning points of keels and adapters through a BIM model; s2, an embedded part is arranged in the on-site main body structure according to the positioning points; s3, rechecking and adjusting the BIM model according to a field main body structure; s4, extracting data of a curtain wall skeleton structure according to the BIM model; s5, the curtain wall framework structure is manufactured and installed according to the extracted data of the curtain wall framework structure; s6, retesting and adjusting the BIM model according to the actual installation position of the curtain wall skeleton structure on site; s7, extracting size data of each grating panel by the BIM model, and manufacturing the grating panel according to the size data; and S8, the grating panel is installed on the curtain wall framework structure. According to the method, the size of the grating panel can be directly extracted through the BIM model, the grating panel in an actual construction site does not need to be measured, the site machining precision is guaranteed, and the construction period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a grille curtain wall construction method based on BIM technology. Background Art

[0002] The grille curtain wall is a decorative and protective structure for the exterior wall of a building. It is composed of a keel, a steel frame, and an aluminum plate (or other material panels). The keel is installed on the main structure of the building through embedded parts. The keel is crisscrossed on the embedded parts and divides the entire building into multiple small grilles, which are then filled with aluminum plates to form a complete curtain wall.

[0003] Grille curtain walls can insulate, shade, ventilate, beautify the appearance, and also provide a certain degree of protection for the exterior walls. Therefore, they are widely used in various modern buildings such as high-rise buildings, commercial complexes, and cultural centers. Most of the current buildings often have unique appearances for aesthetic reasons, which makes the grille curtain walls in different projects not universal, and requires customized grille curtain walls designed for each project.

[0004] During the installation of the special-shaped grille curtain wall, the positioning and welding of the keel and steel frame face many challenges, such as large welding errors in the air, difficult to control welding quality, and insufficient positioning accuracy. This results in the prefabricated aluminum panels often being difficult to fit after the steel frame is welded due to size mismatch. However, if the strategy of first completing the welding of the keel and steel frame, and then measuring and customizing the special-shaped aluminum panels one by one is adopted, the entire construction progress will be significantly delayed. Summary of the invention

[0005] Due to the above defects in the prior art, the present invention provides a grille curtain wall construction method based on BIM technology. The curtain wall is modeled using a BIM model, and the BIM model is adjusted twice according to the on-site conditions to match the on-site conditions with the BIM model. The grille panel size can be directly extracted through the BIM model, and there is no need to measure the grille panel in the actual construction site, which ensures on-site processing accuracy and shortens the construction period.

[0006] To achieve the above object, the present invention provides a grille curtain wall construction method based on BIM technology, comprising the following steps:

[0007] S1: Establish a BIM model according to the curtain wall construction drawing, extract three-dimensional coordinate points through the BIM model, and extract the positioning points of the keel and adapter;

[0008] S2: during the construction of the on-site main structure, setting embedded parts in the on-site main structure according to the positioning points;

[0009] S3: reviewing and adjusting the BIM model according to the on-site main structure to reduce the mismatch caused by the construction deviation of the on-site main structure;

[0010] S4: extracting data of the curtain wall skeleton structure according to the BIM model;

[0011] S5: manufacturing and installing the curtain wall skeleton structure according to the extracted data of the curtain wall skeleton structure;

[0012] S6: re-measure and adjust the BIM model according to the actual installation position of the curtain wall skeleton structure on the main structure on site;

[0013] S7: extracting dimension data of each grille panel from the BIM model, and manufacturing the grille panel according to the dimension data;

[0014] S8: According to the BIM model, the grille panel is installed on the curtain wall skeleton structure.

[0015] By adopting the above technical solution and integrating BIM technology into the installation process of the grille curtain wall, the grille size can be automatically generated through the BIM model, which effectively controls the construction quality, reduces the operation cost, and shortens the construction period. At the same time, since this solution adjusts the BIM model according to the on-site construction conditions, the BIM model is highly matched with the on-site main structure, avoiding the problem of mismatch between the grille size and the actual prefabricated grille caused by inconvenient aerial operation and large welding errors.

[0016] In some embodiments, before step S1, the BIM model needs to be further designed to avoid collisions between structures in the BIM model.

[0017] The above technical solution solves the collision problem that may occur during on-site construction, mainly focusing on the collision inspection between the curtain wall and the steel structure canopy.

[0018] In some embodiments, in step S1, the BIM model is established using Rhino software according to the curtain wall construction drawing;

[0019] The positioning points of the keel and the adapter are extracted by performing parametric analysis on the BIM model using the Grasshopper plug-in in the Rhino software.

[0020] In some embodiments, in step S3, the review and adjustment content includes: re-measuring the layer height, the position deviation of the embedded parts, and adjusting the BIM model according to the on-site main structure.

[0021] During the embedding process of curtain wall embedded parts, due to the inconvenience of high-rise construction and difficulty in quality control, the position and height of the main structure on site may be exactly the same as those represented in the BIM model. Therefore, the position of the embedded parts in the main structure on site may be different from that in the BIM model. The BIM model can be matched with the main structure on site through review and adjustment.

[0022] In some embodiments, the data of the curtain wall skeleton structure includes the structure of the keel and the connection method of the keel.

[0023] In some embodiments, in step S5, the specific process of making and installing the curtain wall skeleton structure is as follows:

[0024] The coordinate points of the keel in the BIM model are analyzed to obtain the relative position and angle of each coordinate point; the corresponding keel is cut and manufactured according to the relative position and angle of the curtain wall skeleton structure data, and the number position is marked; after the manufacturing is completed, the manufactured keel is assembled according to the BIM model, and the assembled curtain wall skeleton structure is uniformly sorted and stacked.

[0025] Through classified stacking, the construction efficiency can be significantly improved.

[0026] In some embodiments, in step S6, the re-measurement and adjustment include: comparing and verifying the on-site main structure with the BIM model and reflecting the results in the BIM model, and adjusting the BIM model based on the on-site main structure.

[0027] This application adjusts the BIM model according to the on-site construction conditions, and then automatically generates the size data of the grille panel through the BIM model. The factory directly produces the grille panel according to the data, which has high construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention and its features and advantages will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0029] Figure 1 A flowchart of a grille curtain wall construction method based on BIM technology provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The structure of the present invention is further described below in conjunction with specific embodiments, but is not intended to be a limitation of the present invention.

[0031] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Example

[0035] This embodiment provides a grille curtain wall construction method based on BIM technology, including the following steps:

[0036] S1: Establish a BIM model according to the curtain wall construction drawing, extract three-dimensional coordinate points through the BIM model, and extract the positioning points of the keel and adapter;

[0037] S2: During the construction of the main structure on site, embedded parts are set in the main structure on site according to the positioning points;

[0038] S3: Review and adjust the BIM model according to the main structure on site to reduce the mismatch caused by the construction deviation of the main structure on site;

[0039] S4: Extract the data of curtain wall skeleton structure according to BIM model;

[0040] S5: fabricating and installing the curtain wall skeleton structure according to the extracted curtain wall skeleton structure data;

[0041] S6: Re-measure and adjust the BIM model according to the actual installation position of the curtain wall skeleton structure on the main structure on site;

[0042] S7: extracting the dimension data of each grille panel from the BIM model, and manufacturing the grille panel according to the dimension data;

[0043] S8: Install the grille panels on the curtain wall frame structure according to the BIM model.

[0044] It should be noted that, in the prior art, the grille curtain wall includes embedded parts prefabricated and installed on the main components of the building, and keels arranged on the embedded parts. Multiple keels are crisscrossed to form a skeleton structure. The skeleton structure divides the wall surface into multiple small parts, and then the grille panels are filled in the skeleton structure to form a complete grille curtain wall.

[0045] However, in the prior art, especially during the construction of special-shaped curtain walls, due to construction and building errors, the curtain wall skeleton structure installed on the main structure of the building often deviates from the pre-planned structure. Therefore, the prefabricated grille panels in the factory may not match the size and are difficult to install.

[0046] In this regard, this embodiment provides a grille curtain wall construction method based on BIM technology, in which a BIM model is established according to the curtain wall architectural drawings, and the construction of the curtain wall structure is guided by the BIM model, wherein the BIM model is adjusted according to the actual installation position of the on-site main structure and the on-site curtain wall skeleton structure, and the size data of the grille panel can be automatically produced through the BIM model. The grille panel has a high degree of matching with the actual situation and the construction efficiency is higher.

[0047] Specifically, the grille panel can be set as an aluminum grille panel.

[0048] In one implementation, before step S1, the BIM model needs to be further designed to avoid collisions between structures in the BIM model.

[0049] Specifically, it mainly detects problems such as collision between civil structures and steel structure canopies.

[0050] In one embodiment, in step S1, the BIM model is established using Rhino software according to the curtain wall construction drawing;

[0051] The Grasshopper plug-in in the Rhino software was used to extract three-dimensional coordinate points and perform parametric analysis on the BIM model. The positioning points of the keel and adapters were extracted to guide the actual construction.

[0052] In one embodiment, in step S3, the review and adjustment contents include: re-measuring the layer height and the position deviation of the embedded parts, and adjusting the BIM model according to the main structure on site.

[0053] Specifically, step S3 is to review the deviation of the main structure. In order to reduce the impact of the on-site main structure construction deviation on the curtain wall construction accuracy, it is necessary to re-measure the main structure after the theoretical model is established. The re-measurement content includes the layer height, embedded parts position deviation, etc.

[0054] Specifically, step S4 is a parametric extraction using BIM technology, and a corresponding unit skeleton is produced according to a three-dimensional coordinate system extracted from a single framework.

[0055] In one embodiment, the data of the curtain wall skeleton structure includes the structure of the keels and the connection method of the keels.

[0056] In one embodiment, in S5, the specific process of manufacturing and installing the curtain wall skeleton structure is as follows:

[0057] Analyze the coordinate points of the keel in the BIM model to obtain the relative position and angle of each coordinate point; cut and produce the corresponding keel according to the relative position and angle of the curtain wall skeleton structure data, and mark the number position; after production, assemble the manufactured keel according to the BIM model, uniformly organize and stack the assembled curtain wall skeleton structure, and weld according to the installation position.

[0058] In one embodiment, in S6, the re-measurement and adjustment includes: comparing and verifying the on-site main structure with the BIM model and reflecting the results in the BIM model, and adjusting the BIM model according to the on-site main structure.

[0059] In some embodiments, the grille panel is made of aluminum. After the model is completed and checked, the surface aluminum plate is processed and manufactured according to the extracted data size. After the aluminum plate arrives at the site, a boom truck is used to install it according to the absolute coordinate points of the aluminum plate. Pay attention to the protection of the finished product during the installation process.

[0060] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0061] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A grille curtain wall construction method based on BIM technology, characterized in that: The following steps are involved: S1: Establish a BIM model according to the curtain wall construction drawing, extract three-dimensional coordinate points through the BIM model, and extract the positioning points of the keel and adapter; S2: during the construction of the on-site main structure, setting embedded parts in the on-site main structure according to the positioning points; S3: reviewing and adjusting the BIM model according to the on-site main structure to reduce the mismatch caused by the construction deviation of the on-site main structure; S4: extracting data of the curtain wall skeleton structure according to the BIM model; S5: manufacturing and installing the curtain wall skeleton structure according to the extracted data of the curtain wall skeleton structure; S6: re-measure and adjust the BIM model according to the actual installation position of the curtain wall skeleton structure on the main structure on site; S7: extracting dimension data of each grille panel from the BIM model, and manufacturing the grille panel according to the dimension data; S8: According to the BIM model, the grille panel is installed on the curtain wall skeleton structure.

2. The grille curtain wall construction method based on BIM technology according to claim 1 is characterized in that: Before step S1, the BIM model needs to be further designed to avoid collisions between structures in the BIM model.

3. The grille curtain wall construction method based on BIM technology according to claim 1 is characterized in that: In step S1, the BIM model is established using Rhino software according to the curtain wall construction drawing; The Grasshopper plug-in in the Rhino software is used to perform parametric analysis on the BIM model, thereby extracting the positioning points of the keel and the adapter.

4. The grille curtain wall construction method based on BIM technology according to claim 1 is characterized in that: In the step S3, the review and adjustment contents include: re-measuring the layer height, the position deviation of the embedded parts, and adjusting the BIM model according to the on-site main structure.

5. The grille curtain wall construction method based on BIM technology according to claim 1 is characterized in that: The data of the curtain wall skeleton structure include the structure of the keel and the connection method of the keel.

6. The grille curtain wall construction method based on BIM technology according to claim 1 is characterized in that: In step S5, the specific process of making and installing the curtain wall skeleton structure is as follows: The coordinate points of the keel in the BIM model are analyzed to obtain the relative position and angle of each coordinate point; the corresponding keel is cut and manufactured according to the relative position and angle of the curtain wall skeleton structure data, and the number position is marked; after the manufacturing is completed, the manufactured keel is assembled according to the BIM model, and the assembled curtain wall skeleton structure is uniformly sorted and stacked.

7. The grille curtain wall construction method based on BIM technology according to claim 1 is characterized in that: In the step S6, the re-measurement and adjustment include: comparing and verifying the on-site main structure with the BIM model and reflecting the results in the BIM model, and adjusting the BIM model according to the on-site main structure.

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