An integrated design and construction method for grid structures based on standardization and industrialization

Abstract

The present invention discloses an integrated design and construction method for a grid structure based on standardization and industrialization, integrating standardized and industrialized production into the integrated design, solving the limitations of the prior art, and achieving a comprehensive optimization of the integrated design and construction of the grid structure. The purlin support members designed, manufactured, and constructed by the method of the present invention have specifications and dimensions only related to the diameter of the upper chord ball of the grid. Therefore, the number of their specifications, dimensions, and numbers can be reduced from tens of thousands in the traditional design and construction methods to more than ten. Under the condition of ensuring the construction accuracy of the structure and not affecting the design and construction of maintenance systems such as metal roofs, the standardized design and industrialized production of purlin support members can be realized. At the same time, material management, material searching, and installation during construction are very convenient, which can greatly reduce the difficulty and cost of processing, manufacturing, and construction.

Description

Technical Field

[0001] The present invention relates to the technical field of building steel structures, and more particularly to an integrated design and construction method for grid structures based on standardization and industrialization. Background Art

[0002] At present, integrated design has become an important trend in the design of grid structures. By closely integrating links such as design, analysis, and construction, it improves the integrity of design and the coordination of construction. However, existing integrated design methods still lack standardized design and industrial production of structural components, resulting in a large variety of grid structure components, low manufacturing and processing efficiency, and difficulty in finding materials on site. These problems seriously affect the project progress, quality, and cost control, and limit the further development and application of integrated design and construction methods for grid structures.

[0003] Therefore, it is necessary to integrate standardization and industrial production into the integrated design to solve the limitations of the existing technology and achieve the overall optimization of the integrated design and construction of grid structures. Summary of the Invention

[0004] The present invention provides an integrated design and construction method for grid structures based on standardization and industrialization, which solves problems such as a large variety of components, low manufacturing and processing efficiency, and difficulty in finding materials on site existing in the existing integrated design and construction methods.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An integrated design and construction method for grid structures based on standardization and industrialization, comprising the following steps:

[0006] S1. Obtain the building completed surface curved surface A1;

[0007] S2. Offset the curved surface A1 according to the height Z1 from the ball center to the purlin support top and the thickness Z2 of the metal roof structure layer, and obtain the curved surface A2 where the structural upper chord nodes are located according to Z = Z1 + Z2;

[0008] S3. Generate grid upper chord ball nodes on the curved surface A2 and generate a grid structure model;

[0009] S4. Perform finite element analysis on the grid structure to obtain the node deformation values [Δ];

[0010] S5. Take the node deformation [Δ] as the pre-deformation value, correct the grid model, obtain the pre-deformed grid line model, and perform structural detailed design based on this;

[0011] S6. Identify the size of the upper chord ball, generate a standardized purlin support from the ball center, and the direction is towards the normal direction of the curved surface A2;

[0012] S7. Assemble and construct the steel structure, purlin brackets, and purlins according to the deepened model after pre-deformation;

[0013] S8. After the grid structure construction is completed and unloaded, the surface formed by the coordinates of the upper chord after structural deformation is basically the same as A2;

[0014] S9. The metal roof is deepened designed, fabricated, and constructed with the curved surface A1 as the reference.

[0015] Further, in step S2, the value Z is the total structural thickness of the grid roof, including the height Z1 from the center of the ball to the top of the purlin bracket and the thickness Z2 of the metal roof structural layer.

[0016] Further, in step S3, after generating the upper chord spherical nodes on the curved surface A2, the lower chord is then reversely deduced, and the grid is divided on the completed surface by parametric means to generate the grid structure model.

[0017] Further, step S5 includes refining the value standard of the node deformation value [Δ]. The node deformation value [Δ] includes ΔX, ΔY, ΔZ, ΔRX, ΔRY, and ΔRZ. Select the three coordinate values of ΔX, ΔY, and ΔZ among them to pre-deform and correct the grid model.

[0018] Further, in step S6, the thickness of the metal roof structural layer is consistent, and the distance from the top elevation of all purlin brackets of the grid structure to the center of the upper chord ball is equal. Therefore, the height of the standardized purlin bracket is only related to the upper chord ball and is determined according to the diameter of the upper chord ball.

[0019] Further, step S6 includes modifying the axis direction of the purlin bracket, and the direction is the normal direction towards the curved surface A2.

[0020] Further, in step S9, the deepened model is deepened designed with the grid model after pre-deformation correction as the reference, and the standardized purlin brackets are installed perpendicular to the outer surface during assembly and construction.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] Through technical means such as parametric design and finite element analysis, the present invention establishes the relationship between the purlin bracket height and the spherical node. Its specifications and dimensions are only related to the diameter of the upper chord ball of the grid. Therefore, its specifications, dimensions, and numbers can be reduced from tens of thousands in the traditional design and construction methods to more than ten. Under the condition of ensuring the construction accuracy of the structure and not affecting the design and construction of maintenance systems such as metal roofs, the standardized design and industrial production of purlin bracket components can be realized. At the same time, material management, material searching, and installation during construction are very convenient, which can greatly reduce the difficulty and cost of processing and manufacturing and construction. Brief Description of the Drawings

[0023] Figure 1Schematic flow chart of an integrated design and construction method for a grid structure based on standardization and industrialization according to the present invention;

[0024] Figure 2 Completion surface schematic diagram of an integrated design and construction method for a grid structure based on standardization and industrialization according to the present invention;

[0025] Figure 3 Schematic diagram of purlin support dimensions of an integrated design and construction method for a grid structure based on standardization and industrialization according to the present invention. Detailed implementation manners

[0026] The following combines the attached Figures 1-3 Further detailed description is given to the detailed implementation manners of an integrated design and construction method for a grid structure based on standardization and industrialization according to the present invention.

[0027] An integrated design and construction method for a grid structure based on standardization and industrialization includes the following steps:

[0028] S1. Obtain the building completion surface curved surface A1;

[0029] S2. Offset the curved surface A1 according to the height Z1 from the ball center to the top of the purlin support and the thickness Z2 of the metal roof structure layer, and obtain the curved surface A2 where the structural upper chord nodes are located according to Z = Z1 + Z2;

[0030] S3. Generate the upper chord ball nodes of the grid on the curved surface A2 and generate the grid structure model;

[0031] S4. Conduct finite element analysis on the grid structure to obtain the deformation values [Δ] of each node;

[0032] S5. Take the deformation [Δ] of each node as the pre-deformation value, correct the grid model, obtain the pre-deformed grid line model, and conduct structural detailed design based on this;

[0033] S6. Identify the size of the upper chord ball, generate standardized purlin supports from the ball center, and the direction is towards the normal direction of the curved surface A2;

[0034] S7. Assemble and construct the steel structure, purlin supports and purlins according to the detailed model after pre-deformation;

[0035] S8. After the grid structure construction is completed and unloaded, the curved surface formed by the upper chord coordinates after the structure deforms is basically the same as A2;

[0036] S9. The metal roof is detailedly designed, fabricated and constructed with the curved surface A1 as the reference.

[0037] Preferably in this embodiment, the value Z in step S2 is the total thickness of the grid roof structure, including the height Z1 from the ball center to the top of the purlin support and the thickness Z2 of the metal roof structure layer.

[0038] Preferably, in this embodiment, in step S3, the upper chord spherical joints of the grid are generated on the curved surface A2, and then the lower chord is reversely deduced. By means of parameterization, the grid is divided on the completed surface to generate the grid structure model.

[0039] Preferably, in this embodiment, step S5 includes refining the value-taking standard of the node deformation value [Δ]. The node deformation value [Δ] includes ΔX, ΔY, ΔZ, ΔRX, ΔRY, and ΔRZ. The three coordinate values of ΔX, ΔY, and ΔZ are selected to perform pre-deformation correction on the grid model.

[0040] Preferably, in this embodiment, step S6 includes modifying the axis direction of the purlin bracket, and the direction is the normal direction towards the curved surface A2. The thickness of the metal roof structure layer is consistent, and the distance from the top elevation of all purlin brackets of the grid structure to the center of the upper chord sphere is equal. Therefore, the height h of the standardized purlin bracket is only related to the upper chord sphere and is determined according to the size of the diameter d of the upper chord sphere.

[0041] Preferably, in this embodiment, in step S9, the detailed model is designed in depth based on the grid model after pre-deformation correction. During the assembly construction, the standardized purlin bracket is installed perpendicular to the outer surface.

[0042] It should be noted that during the implementation process of this invention patent, refining the value-taking standard of [Δ], modifying the axis direction of the purlin bracket, modifying the value contents of Z1 and Z2, etc. should all be included in the protection scope of this invention.

[0043] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An integrated design and construction method for grid structures based on standardization and industrialization, characterized in that It includes the following steps: S1. Obtain the completed building surface curved surface A1; S2. Offset the curved surface A1 according to the height from the ball center to the top of the purlin support Z1 and the thickness of the metal roof structure layer Z2, and let Z = Z1 + Z2 to obtain the curved surface A2 where the structural upper chord nodes are located. The value Z is the total thickness of the grid roof structure, including the height Z1 from the ball center to the top of the purlin support and the thickness of the metal roof structure layer Z2; S3. Generate the grid upper chord spherical nodes on the curved surface A2 and generate the grid structure model; S4. Conduct finite element analysis on the grid structure to obtain the deformation values [Δ] of each node; S5. Use the deformation [Δ] of each node as the pre-deformation value to correct the grid model, obtain the pre-deformed grid line model, and conduct structural detailed design based on this; S6. Identify the size of the upper chord ball, generate a standardized purlin support from the center of the ball, and the direction is towards the normal direction of the curved surface A2; S7. Assemble and construct the steel structure, purlin support, and purlins according to the detailed model after pre-deformation; S8. After the grid structure construction is completed and unloaded, the curved surface formed by the upper chord coordinates after structural deformation is consistent with A2; S9. The metal roof is detailedly designed, fabricated, and constructed with the curved surface A1 as the benchmark.

2. The integrated design and construction method of the grid structure based on standardization and industrialization according to claim 1, characterized in that: In the step S5, it includes refining the value-taking criteria of the node deformation value [Δ]. The node deformation value [Δ] includes ΔX, ΔY, ΔZ, ΔRX, ΔRY, ΔRZ. Select the three-dimensional coordinate values of ΔX, ΔY, and ΔZ among them to correct the pre-deformation of the grid model.

3. The integrated design and construction method of the grid structure based on standardization and industrialization according to claim 1, characterized in that: In the step S6, it includes modifying the axis direction of the purlin support, and the direction is towards the normal direction of the curved surface A2. The thickness of the metal roof structure layer is consistent, and the distance from the top elevation of all purlin supports of the grid structure to the center of the upper chord ball is equal. Therefore, the height of the standardized purlin support only needs to be determined according to the diameter size of the upper chord ball.

4. The integrated design and construction method of grid structure based on standardization and industrialization according to claim 2, characterized in that: In the step S7, the detailed model is detailedly designed with the grid model corrected by the pre-deformation as the benchmark, and the standardized purlin support is installed perpendicular to the outer surface during assembly and construction.

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