A damage assessment method for structural columns subjected to impact loads

Abstract

The invention discloses a damage evaluation method after a structural column encounters an impact load. First, the damage evaluation parameters of the structural column are selected through qualitative and quantitative analysis, and then the corresponding damage evaluation index calculation models under different damage modes are established, and quantified to form a unified Then take the damage assessment parameters as the abscissa and ordinate, fit and draw the contour line at the damage assessment level limit as the damage assessment curve, and finally evaluate the structural column according to the positional relationship between the damage assessment parameter combination point and the damage assessment curve The degree of damage after exposure to impact loading. The invention is suitable for all types of structural columns, has the characteristics of simplicity and generality, rapidity and accuracy, easy popularization, etc., and can provide a strong basis for structural impact resistance design and continuous collapse prevention design.

Description

technical field [0001] The invention belongs to the technical field of disaster prevention and reduction in structural engineering, and in particular relates to the design of a damage assessment method for structural columns subjected to impact loads. Background technique [0002] Structural columns are important load-bearing components of buildings. In addition to bearing vertical loads from the upper structure during normal use, structural columns are often threatened by lateral impact loads, such as cars hitting the structural columns of the underlying building, and flying objects hitting high-rise buildings. Structural columns, high-speed rail trains / trains hitting the structural columns of the station building, rolling stones hitting the structural columns of buildings near mountains, etc. Once such accidents / disasters occur, the structural columns will be damaged to varying degrees or even fail, which will seriously endanger people's lives and property safety, while ge...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that there is no general damage assessment method in the prior art, the damage degree of each impact parameter to the structural column lacks mathematical proof, and there is no general damage assessment criterion and no unified damage assessment level. A damage assessment method for structural columns subjected to impact loads is proposed

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