Cable structure shape-finding analysis method

Abstract

The invention discloses a cable structure shape finding analysis method. The method comprises the following steps: 1, establishing a cable structure zero-state geometric model; 2, inputting a prestress value to determine the initial form of the cable structure; 3, analyzing various load states, and determining whether the standard requirements are met or not, if the standard requirements are met,enabling the initial form of the cable structure to be the design form of the cable structure; if the standard requirements are not met, modifying the parameters, returning to the step 1, and finallyfinding the design form of the cable structure; 4, carrying out simulation calculation on the whole construction process to obtain a new form of the cable structure; 5, comparing the new form of the cable structure with the design form of the cable structure, and judging whether the error is acceptable or not, if so, determining that the new form of the cable structure is the formed form of the cable structure; if not, modifying the parameters, returning to the step 1, and finally finding a cable structure formation form; according to the method, the requirements of standard stress, deformation and the like can be met, and the requirement for the cable structure forming form geometric configuration can also be met, so that the cable structure forming form is infinitely close to the designrequirement.

Description

technical field [0001] The invention relates to the technical field of prestressed cable structure products, in particular to a form-finding analysis method for cable structures. Background technique [0002] With the development of society and the advancement of science and technology, housing construction not only fulfills the functions of human use, but also takes into account the needs of culture and aesthetics. The prestressed long-span space structure has a novel appearance, beautiful appearance and lightness, and makes full use of the material properties. It has become one of the most promising structural forms in structural engineering. The long-span space cable structure is a new type of structure that follows this trend. structural form. The long-span cable structure has no stiffness before the prestress is applied. It is a flexible structural system. It relies on the application of prestress to make the structure have a certain rigidity and bear the load. Therefo...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the form-finding analysis of the cable structure is generally completed by the designer of the design unit. During the process, due to the construction method adopted, it is seldom to build a full house of scaffolding, one-time forming installation and stretching forming, usually adopting staged installation and batch stretching forming, even if the hierarchical and symmetrical stretching method is adopted, it will inevitably lead to actual forming The forming process is not exactly the same as the design process. Moreover, due to construction deviations, processing errors and other reasons in the actual construction process, the zero state of the cable structure is not the zero state of the design drawings. Therefore, the existing cable structure finds The form method does not consider the influence of the construction process on the structural forming. The traditional cable structure form-finding analysis method cannot accurately reflect the entire construction process, and the final forming state does not meet the requirements of the design drawings.

Images