Anti-collapse security evaluation method for self-support communication tower

Abstract

Disclosed is an anti-collapse security evaluation method for a self-support communication tower. By adoption of the anti-collapse security evaluation method, dynamic response of the self-support communication tower in a complete tower collapse process when key members are damaged under a wind load effect can be accurately simulated; the anti-collapse security of the self-support communication tower can be evaluated; by combination of conventional design software and universal finite element software, modeling of the communication tower with a large number of members can be rapidly and conveniently completed while simulation of a complex dynamic collapse complete process also can be realized; and by considering various adverse wind directions, and working conditions of damage of single members and joint damage of multiple members, the analysis result is detailed and reliable. The evaluation method disclosed by the invention is simple in analysis thought, easy to learn and master, can be used for designing a newly built tower as well as for evaluation of a net tower, so that the method can be widely popularized among tower designers, and the blank of the self-support communication tower in anti-collapse research and design is filled up.

Description

technical field [0001] The invention belongs to the technical field of communication engineering towers and masts, and in particular relates to an evaluation method for the anti-collapse safety of self-supporting communication towers, which can be applied to evaluate the anti-collapse of self-supporting communication towers after local component failure aging of the self-supporting communication towers. safety. Background technique [0002] Communication tower is the main carrier of communication signal transmission, reception and transmission equipment, and is an important infrastructure for mobile communication network to complete signal coverage. The self-supporting communication tower is a typical high-rise steel structure building with light weight, so the wind load is generally used as the design control load. Self-supporting communication towers usually include single-pipe towers, three-pipe towers and angle steel towers, among which three-pipe towers and angle steel...

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Problems solved by technology

[0003] At present, my country's anti-collapse safety assessment of building structures is only at the conceptual stage, and there is no detailed national code as a guide

The safety evaluation of the collapse resistance of the communication tower under the design load is still in a blank stage, and there is a lack of a feasible safety evaluation method for the safety of the communication tower collapse.

For the analysis of the anti-collapse performance of ordinary building structures, a two-stage loading method is often used, that is, a reverse internal force is applied at the failure point of the component, and the direction force is removed within the failure time to simulate the failure of the component. This method is too complicated and difficult. implementation, it is difficult to popularize and apply; on the other hand, the communication tower has many components and complex composition, and the existing general-purpose finite element software is relatively cumbersome in modeling functions, which also limits the application of anti-collapse safety assessment on communication towers

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