Abstract
In this paper, several existing seismic damage models as well as their characteristics were discussed first of all. And then it was figured out that variational history of incremental dissipated hysteretic energy of tentative frame columns under different loading cycle levels; the influence of axial compression ratio, type of stirrups, stirrup ratio, reinforcement ratio, strength grade of concrete and shear span ration on the incremental dissipated hysteretic energy was discussed and analysed. The damage index of tentative frame columns was compared and analysed according to the existing seismic damage models, and the seismic damage models adapt to high-strength concrete columns and ordinary-strength concrete columns were offered. The influence of shear span ration, axial compression ratio and stirrup ratio on the damage was discussed and analysed according to the variational history of the damage index under different loading cycle levels. Lastly through analysing all sorts of seismic damage models comparatively, the seismic damage model of high strength concrete frame columns is put forward, which offers good basement for further damage analysis.
Highlights
The most intuitive manifestation of building structure under earthquake action is damage
On the premise of allowing structural seismic damage, according to the historical seismic data, the seismic fortification level and importance of the structure, and on the basis of fully estimating the future seismic characteristics, it is a natural and reasonable pursuit for people to carry out seismic design of structures according to certain damage degree limits
From the point of view of the number of damage parameters, the seismic damage model of the structure can be divided into single parameter damage model and double parameter damage model
Summary
The most intuitive manifestation of building structure under earthquake action is damage. (1) Single-parameter earthquake damage model The single parameter seismic damage model holds that the seismic damage of a structure or component can be described by a single damage parameter , and the calculated value of the member is destroyed c it is greater than its limit allowable value u. Domestic and foreign scholars have put forward a lot of double-parameter seismic damage models, more mature and widely used or Park models. They defined the damage index DM as: DM. The is the shear span ratio of the member, the s is the reinforcement ratio of the longitudinal reinforcement, and the w is the volume hoop ratio
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