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Method for measuring and locating virtual tetrahedron top of abnormity component

A positioning method and a technology of special-shaped components, which are applied in the direction of measuring instruments, measuring devices, mechanical measuring devices, etc., can solve the problems of being impossible or very inconvenient to apply, and achieve the effects of simplifying the work of measuring, positioning and correcting, simple in principle, and convenient in implementation

Inactive Publication Date: 2009-06-17
ZHEJIANG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many intersecting openings connecting rods on special-shaped nodes. The measurement and positioning of a node not only includes the plane and elevation position of the node, but also includes the orientation of all the rods connected to the node. Therefore, the general method of steel structure construction measurement and positioning, That is: the method of measuring alignment based on the axis of the component will not be or very inconvenient to be applied to the construction of special-shaped structures

Method used

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  • Method for measuring and locating virtual tetrahedron top of abnormity component
  • Method for measuring and locating virtual tetrahedron top of abnormity component
  • Method for measuring and locating virtual tetrahedron top of abnormity component

Examples

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Embodiment

[0017] Such as figure 1 shows a heteromorphic structure whose nodes are composed of similar figure 2 The three-dimensional body composed of profiled nodes is shown. as image 3 Take a three-dimensional body with special-shaped nodes as an example, take four points 1, 2, 3, and 4 that are not in the same plane on the design drawing of the three-dimensional body with special-shaped nodes to form a virtual tetrahedron, and point 1 is the highest point, according to the design The drawing calculates the three-dimensional coordinates of these four points, and then makes the corresponding marks of these four points on the three-dimensional object of the special-shaped node. In addition to considering the convenience of measurement readings, when selecting a virtual tetrahedron, the lengths of the six sides should be as close as possible and as long as possible. Select the highest point 1 of the three-dimensional body of the special-shaped node as the main control point for measu...

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Abstract

The present invention discloses a method for measuring and locating the tops of the virtual tetrahedron of the special-shaped component. In a special-shaped node three-dimensional body, four points which are not in a same surface are chosen to form a virtual tetrahedron. The three-dimensional coordinates of the four points are calculated and the corresponding marks of the four points are marked on the real object of the node. A random point is chosen as a main control point of the node and other points are taken as auxiliary control points. When the node is hanged to the station, firstly the three-dimensional coordinate of the main control point is monitored with an electronic total station at the position of the measuring point, and on the moulding bed of the node, the adjustment is executed by means of equipment to accurately control the plan position and scale height of the main control point. The planar and vertical three-dimensional rotation adjustments are executed while the node takes the main control point as a center until when the monitored reading number of the coordinate of other three auxiliary control points is fit with the calculated value. When the node is measured and is accurately mounted, the node is welded on the positioning device of the moulding bed for temporary fixing. The method of the invention has the advantages of simple principle, reliable method, convenient realization, high work efficiency and broad application sphere.

Description

technical field [0001] The invention relates to a measurement and positioning method for construction and installation of structures or components, in particular to a measurement and positioning method for virtual tetrahedron vertices of special-shaped components. Background technique [0002] Modern architectural modeling emphasizes the integration with the environment and regional culture, and makes the building shape more and more beautiful and personalized. For special-shaped steel structures that use square, rectangular, asymmetric trapezoidal and other non-circular cross-section steel pipes as structural members, the unique architectural shape brings great difficulty to installation and construction. Since the lengths of the bars of the special-shaped structure are different, the angles between the bars and the ground are different, and the plane angles between the bars are also different. Each node is connected with several rods and pipes, and the characteristics of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/14G01B5/004G01C15/00
Inventor 卓新楼道安蒋金生吴建挺齐宇
Owner ZHEJIANG UNIV
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