Method used for measuring structure damages and safety conditions of Ying county buddha tower

Abstract

The invention discloses a method used for measuring structure damages and safety conditions of Ying county buddha tower. The method comprises following steps: primary testing is carried out so as to establish dynamic characteristic standards of Ying county buddha tower, and qualitative determination of structure damages and safety conditions is carried out based on change situation of dynamic characteristic parameters; 2th to n-th testings are carried out, the results of the n-th testing are compared with the result of the primary testing and the result of the (n-1)-th testing, qualitative determination of structure damages and safety conditions is carried out based on change situation of dynamic characteristic parameters; and then examination analysis is carried out based on environment change and structure conditions. According to the method, comprehensive analysis based on practical boundary conditions, material performance, construction quality, and joint constraints is carried out, testing results are accurate and credible, and qualitative determination of structure damages and safety conditions of Ying county buddha tower can be realized based on comparative analysis of the change of frequency, vibration modes, and damping ratio obtained via testing.

Description

technical field [0001] The invention belongs to the technical field of buildings, and in particular relates to a test method corresponding to the structural damage and safety status of a county wooden pagoda. Background technique [0002] The dynamic characteristics of the building (including frequency / period, mode shape and damping ratio, etc.) are inherent characteristics of the building itself. After the building is completed and put into use, its dynamic characteristic parameters are basically fixed or change little. During the use of the building, the dynamic characteristic parameters of the building may change due to environmental influences, changes in use functions, and natural disasters. According to the changes in the dynamic characteristics of the building, the structural performance change of the building can be demonstrated and determined. [0003] In the dynamic characteristic test, the vibration pickup converts the movement of a certain point on the structure...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a test method corresponding to the structural damage and safety status of the county wooden tower, aiming to solve the problem that the theoretical calculation cannot accurately consider the influence of material performance degradation of historical building wooden structures, and the difference between the component node constraint model and the solid model , the difference between the material constitutive model and the actual model, the difference between the assumed boundary conditions and the actual situation, and the influence of mesh division accuracy, theoretical calculations often need to use simplified models for analysis, resulting in pure theoretical simulation analysis generally not having independent reliability , often need the support and corroboration of relevant experiments

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