Method for optimizing mould matching rate of UHPC (Ultra High Performance Concrete) plate of hyperbolic special-shaped hollow UHPC curtain wall

Abstract

The invention discloses a hyperbolic special-shaped hollow UHPC (Ultra High Performance Concrete) curtain wall UHPC (Ultra High Performance Concrete) plate mold matching rate optimization method, which comprises the following steps of: performing Gaussian curvature analysis on an original hyperbolic surface of a hyperbolic special-shaped hollow UHPC plate model to obtain an expandable curved surface with the Gaussian curvature of 0 and a spherical curved surface with the Gaussian curvature of a normal number; on the basis of the original hyperboloid, newly-built multiple curved surfaces of the expandable curved surface and the spherical curved surface are rebuilt through software, and the design requirement deviation of the newly-built multiple curved surfaces and the original hyperboloid is controlled within a preset threshold value range; and the newly-built multiple curved surfaces and other specialities on the main body structure of the hyperbolic special-shaped hollowed-out UHPC curtain wall are subjected to modeling collision rechecking and error optimization and digestion. The problems that the UHPC plate component of the hyperbolic special-shaped hollow UHPC curtain wall is multiple in curvature type and high in machining cost are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a method for optimizing the mold matching rate of UHPC panels of a hyperbolic special-shaped hollow UHPC curtain wall. Background Art

[0002] In the hyperbolic hollow UHPC curtain wall, the area is 4880m 2 Hyperbolic special-shaped hollow UHPC curtain walls are all irregular hyperbolic surfaces. Due to their different shapes, a set of molds can only produce one component of a hyperbolic special-shaped hollow UHPC curtain wall. Therefore, a large number of molds are required, the processing cost is high, and a set of molds takes about 7 days to make. As a result, the entire hyperbolic special-shaped hollow UHPC curtain wall project has a total of 973 UHPC components. According to the simultaneous processing of 10 molds in the same period, it takes at least 651 days, and the installation period does not match the actual situation on site. Summary of the invention

[0003] In order to overcome the defects of the prior art, a method for optimizing the mold matching rate of UHPC panels of a hyperbolic special-shaped hollow UHPC curtain wall is provided to solve the problems of multiple curvature types and high processing cost of UHPC panels of the hyperbolic special-shaped hollow UHPC curtain wall.

[0004] To achieve the above object, a method for optimizing the mold ratio of UHPC panels of a hyperbolic special-shaped hollow UHPC curtain wall is provided, comprising the following steps:

[0005] The Gaussian curvature analysis was performed on the original hyperbolic surface of the UHPC plate model of the hyperbolic hollow UHPC curtain wall, and the developable surface with Gaussian curvature of 0 and the spherical surface with Gaussian curvature of a positive constant were obtained;

[0006] On the basis of the original hyperbolic surface, a new poly-curved surface of the developable surface and the spherical surface is re-established by using software, wherein the design requirement deviation between the new poly-curved surface and the original hyperbolic surface is controlled within a preset threshold range;

[0007] The new multi-curved surface and other professional parts on the main structure of the hyperbolic special-shaped hollow UHPC curtain wall are reviewed for modeling collision and optimized for error digestion.

[0008] Furthermore, the software is Rhino software.

[0009] Furthermore, the preset threshold range is less than or equal to 600 mm.

[0010] Furthermore, the minimum spacing between the UHPC panels of the hyperbolic special-shaped hollow UHPC curtain wall and the glass surface of the hyperbolic special-shaped hollow UHPC curtain wall is less than or equal to 600 mm.

[0011] The beneficial effect of the present invention is that the optimization method of the UHPC plate matching rate of the hyperbolic special-shaped hollow UHPC curtain wall of the present invention is mainly completed by the cooperation of Rhino software and related plug-ins. In the process of optimizing the hyperbolic surface of the UHPC curtain wall, the common mode rate of the plate modeling is improved, the cost is reduced, and the construction period is shortened, which provides a basis for the subsequent in-depth design of the HUPC curtain wall. The present invention is suitable for the optimization of large-area hyperbolic special-shaped solid surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0013] Figure 1 It is a structural schematic diagram of a UHPC plate model of a hyperbolic special-shaped hollow UHPC curtain wall according to an embodiment of the present invention.

[0014] Figures 2 to 4 The figure is a schematic diagram of the steps of a method for optimizing the mold matching ratio of UHPC panels of a hyperbolic special-shaped hollow UHPC curtain wall according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0016] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] Reference Figures 1 to 4 As shown, the present invention provides a method for optimizing the mold ratio of UHPC panels of a hyperbolic special-shaped hollow UHPC curtain wall, comprising the following steps:

[0018] S1. Gaussian curvature analysis is performed on the original hyperbolic surface of the UHPC plate model of the hyperbolic special-shaped hollow UHPC curtain wall to obtain a developable surface with a Gaussian curvature of 0 and a spherical surface with a positive constant Gaussian curvature.

[0019] For details, see Figure 2 As shown, step S1 includes:

[0020] S11. Data preparation:

[0021] Obtain the geometric data of the original hyperbolic surface of the UHPC plate model of the hyperbolic special-shaped hollow UHPC curtain wall, including point cloud data or parameter equations.

[0022] Import geometry data using CAD or CAE software (such as Rhino, AutoCAD, CATIA, etc.).

[0023] S12, Gaussian curvature analysis:

[0024] Use a curvature analysis tool in mathematical software (such as Matlab, Mathematica) or CAD software to calculate the Gaussian curvature distribution of the original hyperbolic surface.

[0025] Determine the areas on the surface where the Gaussian curvature is zero (developable surface) and the areas where the Gaussian curvature is a positive constant (sphere).

[0026] S13, surface generation:

[0027] Developable surface: Generates a developable surface in the region where the Gaussian curvature is 0. The developable surface can be approximated by a plane, cylinder, or cone.

[0028] Spherical surface: Generate a spherical surface in the area where the Gaussian curvature is a positive constant. The radius of the spherical surface is determined by the Gaussian curvature. The greater the curvature, the smaller the radius.

[0029] S14, surface optimization:

[0030] The generated developable surfaces and spherical surfaces are optimized to ensure the continuity and smoothness of the surfaces.

[0031] Check the connections between surfaces to ensure smooth transitions and avoid sharp edges or discontinuities.

[0032] S2. Based on the original hyperbolic surface, a new multi-curved surface of the developable surface and the spherical surface is re-established using software, and the design requirement deviation between the new multi-curved surface and the original hyperbolic surface is controlled within a preset threshold range (the preset threshold range is less than or equal to 600 mm).

[0033] For details, see Figure 3 and Figure 4 As shown, step S2 includes:

[0034] S21, surface segmentation:

[0035] According to the design requirements, the original free-form surface is divided into multiple sub-surfaces. The basis for division can be curvature change, geometric features or functional requirements.

[0036] Each sub-surface should keep its geometry as simple as possible to facilitate subsequent modeling and optimization.

[0037] S22, multi-surface reconstruction:

[0038] Use CAD software (such as Rhino, Grasshopper) to reconstruct each sub-surface. Parametric surfaces such as NURBS surfaces and Bézier surfaces can be used for modeling.

[0039] Ensure the geometric accuracy of each sub-surface and minimize the deviation from the original surface.

[0040] S23, deviation control:

[0041] Use a deviation analysis tool (such as Deviation Analysis in Rhino) to check how each subsurface deviates from the original surface.

[0042] Adjust the surface control points or parameters to ensure that the deviation is within the range of ≤600mm.

[0043] For areas with large deviations, perform local optimization or remodeling.

[0044] Surface splicing and continuity check:

[0045] Each sub-surface is stitched together into a complete new polysurface to ensure continuity and smoothness between the surfaces.

[0046] Use curvature analysis tools to check the curvature continuity of surface joints to avoid sudden changes in curvature.

[0047] S24, Collision Detection:

[0048] The newly reconstructed multi-curved surface is subjected to collision detection with other professional models (such as structure, equipment, etc.).

[0049] Perform preliminary collision analysis using collision detection software (such as Navisworks, Revit) to ensure there is no conflict between the surfaces and other disciplines.

[0050] S3. Check the collision of the newly-built multi-curved surface and other professional parts on the main structure of the hyperbolic special-shaped hollow UHPC curtain wall and optimize the error.

[0051] The minimum spacing between the UHPC panels of the hyperbolic special-shaped hollow UHPC curtain wall and the glass surface of the hyperbolic special-shaped hollow UHPC curtain wall is less than or equal to 600 mm.

[0052] Specifically, step S3 includes:

[0053] S31. Optimization and adjustment:

[0054] According to the collision detection results, the newly created multi-surface is further optimized and adjusted. The adjustment of the newly created multi-surface includes local deformation of the surface, adjustment of control points, surface segmentation, etc.

[0055] Ensure that the optimized curved surface meets the minimum spacing requirement between the UHPC outer surface and the glass surface (≤600mm).

[0056] S32, Steel structure corbel cantilever spacing control:

[0057] Check the cantilever spacing of the UHPC steel structure corbels to ensure that it is ≤1500mm.

[0058] For areas where the cantilever spacing is too large, adjust the position of the steel structure support points or add supporting structures.

[0059] S33. Curtain wall node structure optimization:

[0060] According to the requirements of curtain wall node construction and inspection and maintenance, the standard practices of UHPC curtain walls are optimized.

[0061] Ensure that standard practices meet design requirements, analyze non-standard locations separately, and absorb errors through node structure adjustments such as eccentric suspension.

[0062] S34, Collision Review:

[0063] The optimized surface is re-checked for collision with other professional models.

[0064] Perform detailed clash analysis using clash detection software to ensure all conflicts are resolved.

[0065] S35, Error Digestion and Node Adjustment:

[0066] For non-standard locations, node structure adjustment methods such as eccentric suspension are used to absorb errors.

[0067] Ensure that all nodes are constructed reasonably to meet the installation and maintenance requirements of the curtain wall

[0068] By calculating the mold ratio of UHPC panels, the overall mold ratio of UHPC panels was optimized from 1:1 to 1:5.09, among which the mold ratio of the flat area was optimized from 1:1 to 1:14.6, the mold ratio of the cylindrical area was optimized from 1:1 to 1:23.1, and the mold ratio of the conical area was optimized from 1:1 to 1:17.7. The number of molds was reduced from 973 sets to 191 sets, and the cost was reduced from 6,000 yuan / square meter to 2,000 yuan / square meter. The mold processing time was shortened from 651 days to 192 days, meeting the on-site construction period requirements.

[0069] The optimization method of the UHPC plate matching rate of the hyperbolic special-shaped hollow UHPC curtain wall of the present invention is highly targeted and is mainly completed by the cooperation of Rhino software and related plug-ins. In the process of optimizing the hyperbolic surface of the UHPC curtain wall, it not only improves the common mode rate of the plate modeling, reduces the cost, but also shortens the construction period, providing a basis for the subsequent in-depth design of the HUPC curtain wall. The present invention is suitable for the optimization of large-area hyperbolic special-shaped solid surfaces.

[0070] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A method for optimizing the mold ratio of UHPC panels for a hyperbolic hollow UHPC curtain wall, characterized in that: The following steps are involved: The Gaussian curvature analysis was performed on the original hyperbolic surface of the UHPC plate model of the hyperbolic hollow UHPC curtain wall, and the developable surface with Gaussian curvature of 0 and the spherical surface with Gaussian curvature of a positive constant were obtained; Based on the original hyperbolic surface, a new poly-curved surface of the developable surface and the spherical surface is re-established by using software, wherein the design requirement deviation between the new poly-curved surface and the original hyperbolic surface is controlled within a preset threshold range; The new multi-curved surface and other professional parts on the main structure of the hyperbolic special-shaped hollow UHPC curtain wall are reviewed for modeling collision and optimized for error digestion.

2. The method for optimizing the mold ratio of UHPC panels of the hyperbolic special-shaped hollow UHPC curtain wall according to claim 1 is characterized in that: The software is Rhino software.

3. The method for optimizing the mold ratio of UHPC panels of the hyperbolic special-shaped hollow UHPC curtain wall according to claim 1 is characterized in that: The preset threshold range is less than or equal to 600 mm.

4. The method for optimizing the mold ratio of UHPC panels of the hyperbolic special-shaped hollow UHPC curtain wall according to claim 1 is characterized in that: The minimum distance between the UHPC panels of the hyperbolic special-shaped hollow UHPC curtain wall and the glass surface of the hyperbolic special-shaped hollow UHPC curtain wall is less than or equal to 600 mm.

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