Research On The Isolation Performance Of Aerated Concrete Block Masonry Structure

The earthquake is the rapid vibration caused by crustal release of energy in the process which is the sudden.The disaster to mankind brought by the earthquake is very serious.The earthquake will cause paralysis of the city and a large number of casualties,and the achievements of human civilization can be damaged and even destructed.Earthquake disaster is enough to make people pay attention.There are three kinds of measures for human beings to mitigate earthquake disasters:earthquake prediction,seismic shift and earthquake engineering.Seismic shift is to think of a way to slowly release the seismic energy or transfer it to a remote place to release in order to reduce the loss caused by the earthquake.But depending on the current technology is very difficult to do it.Earthquake prediction refers to the prediction before the destructive earthquake.It can make people ready to respond.But the cause and the law of earthquake of human cognition is not perfect,and the research of structure of the earth is not deep enough,so it cannot accurately predict earthquakes.Earthquake engineering,namely the structure seismic and vibration isolation.Humans study the basis of structure,the materials and the structure of the buildings in order to make the building achieve the seismic fortification target " not fall in the earthquake,repairable under moderate earthquake,no bad small earthquake".To ensure the personal safety and property safety,and some research results from damage.The earthquake disaster is reduced to the minimum.Adaptability of seismic system is limited.Different sites,different building structures,different building height will affect the design scheme.It is not only complex,but also difficult to fully achieve fortification target.Because of the development of seismic isolation technique,the structure can get better performance in the earthquake.Isolation is by increasing the isolation layer between the upper buildings and the ground which lift the coupling relationship between them.The isolation layer material selects material which is flexible and with large damping.It is used to absorb and consume the earthquake energy,so that the seismic energy suffered by upper structure was greatly reduced.It aims at ensuring the safety of structure.China is a big country of masonry with extensive use of masonry structure in the office and residential buildings.Autoclaved aerated concrete block is not only low cost,easy to draw materials,produce and construct,but also solve the major disadvantages of poor durability of common building block.It is promising environmental-friendly building materials.This paper introduces the advantages and disadvantages of the steam pressure aerated concrete blocks,and introduces the isolation performance of the LRB.This paper proposes to use ANSYS software to simulate the aerated concrete masonry structure foundation isolation model compared with no isolation foundation model.In this paper,the construction adopts prototype of Songjianghe Forestry Bureau 6storey brick concrete structure residential building.It uses of autoclaved aerated concrete block instead of the masonry structure in the ANSYS.It gives a simple analysis of reaction characteristics of earthquake and the law.Then inputting earthquake wave,and the characteristics of dynamic response analysis of base isolated structure under earthquake action is analyzed by the history analysis(acceleration,shear and layer displacement).It investigates the isolation effect of bearing of masonry structure theoretically.