Method for splicing arc-shaped space truss

Abstract

The invention discloses a method for splicing an arc-shaped space truss. The method comprises the following steps of: 1, searching the radius r of each node sphere according to a design drawing, and performing three-dimensional transformation on a spliced downward-pointing triangle truss to form an equilateral triangle truss; 2, marking a connecting line of the two ends of the equilateral triangle truss to be used as an auxiliary line, marking a vertical bisector of the auxiliary line, and establishing a coordinate system by using a central point as the original point and the auxiliary line and the bisector as an X axis and a Y axis respectively; 3, labeling a central three-dimensional coordinate value of each node sphere according to the coordinate system respectively; 4, determining the supporting height of a spherical node at the position of the maximum y value and a difference value between each node and the radius of the spherical node, determining the supporting height of each spherical node according to a coordinate value y, and firmly welding a support with a jig frame; and 5, partially splicing the truss, dismounting an upper spherical node support, and splicing a lower diagonal rod to finish the splicing of the arc-shaped space truss. By the method, a rod piece and a node can be accurately and safely spliced, so that the construction quality and efficiency of an assembly are greatly improved.

Description

Technical field: [0001] The invention belongs to a building structure installation method, in particular to an assembly method for arc-shaped space trusses. Background technique: [0002] Due to its light weight and ability to withstand greater loads, arc-shaped ball-jointed steel structures are increasingly used in long-span venues and large factory buildings. The load transmission of this structure is through the process of the rod to the node ball and then to the rod, which puts forward the direct requirement for the force transmission of the rod to the construction, and the structure is mostly an inverted triangle in space, and the stability of the components must be considered in the assembly performance and construction safety. [0003] At present, the assembly of arc-shaped space trusses is mostly carried out by segmented assembly method, and the tire frame is made and positioned according to the node coordinates provided by the design. However, if the assembly is c...

AI Technical Summary

Problems solved by technology

However, if the assembly is carried out completely according to the design and installation form, it is equivalent to making a set of tire frames in the installation environment, which will lead to the waste of materials caused by the use of a large number of spliced ​​tire frames, and the operation height of personnel is relatively high, so safety is not easy to guarantee and other shortcomings

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