Earthquake-tsunami continuous effect-based non-elastic displacement ratio spectrum model

Abstract

The invention discloses an earthquake-tsunami continuous effect-based non-elastic displacement ratio spectrum model, belongs to the field of earthquake engineering. The earthquake-tsunami continuous effect-based non-elastic displacement ratio spectrum model is built according to the steps of selecting a large amount of shake, and building a series of non-elastic single-degree of freedom structureswith different periods; determining power characteristic of each period of non-elastic single-degree of freedom structure; calculating maximum elastic displacement of the structure under a given earthquake-tsunami continuous effect, and calculating maximum elastic strength; calculating maximum displacement generated by the structure under the earthquake-tsunami continuous effect; calculating a displacement ductility coefficient of the structure, and judging whether the structure displacement ductility conforms to target ductility or not; and performing regression analysis. By the earthquake-tsunami continuous effect-based non-elastic displacement ratio spectrum model, the problems that currently-proposed non-elastic displacement ratio spectrum model is on the basis of an independent earthquake effect while further influence of a tsunami effect on structure reaction after earthquake is neglected are solved.

Description

technical field [0001] The invention belongs to the field of earthquake engineering, in particular to an inelastic displacement ratio spectrum model based on the continuous earthquake-tsunami action. Background technique [0002] Historical earthquake-tsunami data show that tsunamis are often triggered by submarine earthquakes, thus forming a sequence-type earthquake-tsunami effect. Although earthquake-tsunami continuous action can cause greater damage or even collapse to coastal structures than single earthquake action, however, the seismic design codes in my country and the world have not considered its adverse impact on structural response. Therefore, evaluating the behavior of existing structures under continuous earthquake-tsunami action is of great significance for improving the seismic safety of coastal structures and revising codes for seismic design of structures. [0003] Displacement-based seismic assessment is the most widely used behavior assessment theory in b...

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Problems solved by technology

[0004] The present invention aims to provide an inelastic displacement ratio spectrum model based on the earthquake-tsunami continuous action to solve the problem that the existing inelastic displacement ratio spectrum model only considers the single action of the earthquake and fails to consider the structural response to the continuous action of the tsunami after the earthquake Impact and other issues

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