Seismic Response And Vulnerability Analysis Of Sliding-isolated Concrete Rectangular Liquid-storage Structures

Reinforced concrete rectangular liquid-storage structure is an important strategic reserve structure.With the rapid economic development in China,it is widely used to store sewage and chemical liquid.When the earthquake comes,once the structural damage,the consequences be unbearable to contemplate.Serious secondary disasters will follow.It will cause serious damage to the surrounding ecological environment,a serious threat to the safety of life and property of the people,the country will also suffered huge economic losses,so design and optimize the isolation of concrete rectangular liquid-storage structures has very important practical significance.In this paper,the structure of concrete rectangular storage was studied in this paper,and the polytetrafluoroethylene isolation was set up at the bottom of the structure,and the analysis model was established through the finite element software ADINA.This paper studies the seismic response and vulnerability of the sliding isolation concrete rectangle under different friction coefficients.The rules are as follows:(1)The seismic response of a sliding isolation concrete rectangle under the effect of seismic waves of different earthquakes is analyzed.The results show that as the intensity of the earthquake increases,the acceleration of the reservoir structure,the height of the liquid level,the peak of the effective stress and the change of the structure slip distance.(2)To establish different friction coefficient of concrete rectangular liquid the slipping isolator structure analysis model,for the same earthquake loads,with the increase of sliding friction coefficient,the peak acceleration of the liquid structure,height of liquid sloshing,the changing rule of the effective stress peak value is analyzed.The seismic effect of the sliding friction isolation on the structure of the rectangular reservoir was summarized.(3)To select different characteristics of seismic wave effect on the concrete rectangular liquid storage structure,the seismic wave amplitude modulated earthquake acceleration peak value increases gradually from 0.1 g to 0.1 g,for rectangular liquid storage structures of different failure modes,and numerical calculation,the different sample and then the seismic vulnerability curve drawing.This paper analyzes the vulnerability of the non-seismic structure,and illustrates the advantages of the sliding isolation structure.