Research On Split Column Stilt Floor Isolation Mechanism

China is an earthquake-prone country,especially in recent years many earthquakes in remote areas caused the collapse of a large number of houses in rural areas and small towns,caused heavy loss of the lives and property of local people,research on rural residential isolation method got the attention of the researchers.Isolation,the study of multilayer houses many at home and abroad,put forward a lot of isolation method,there are mainly based earthquake isolation rubber bearing isolation,the two kinds of methods,but because of the high cost and complex structure and implementation difficulties,in order to study the simple structure,convenient construction,low cost of vibration isolation system is imminent.,on the basis of the principle of earthquake response spectrum in such a layer of flexible stilt floor at the bottom of the rigid housing design,make the stiffness of the larger low cycle of multi-storey building structure,to extend significantly decreases,and can make the structure of the seismic action to have the vibration isolation effect.The scholars in our country has been further research the seismic behavior of the columns,proved that the columns has good ductility,energy dissipation capacity and columns technology can significantly reduce the lateral stiffness of pillars,increase the ductility of the columns.Therefore,this article emphatically from the following aspects to explore the isolation performance of fission column:1.By looking at about columns understand the research status of fission column technology at home and abroad,on the basis of the previous scholars study further innovation columns is analyzed in application.2.Through the comparative study on the numerical simulation of a single monolithic columns and columns in an axial compression ratio,shear span ratio and concrete strength grade under the hysteretic performance,ductility,energy dissipation capacity and the difference of lateral stiffness,according to the analysis of selected columns best axial compression ratio,shear span ratio,concrete strength grade is applied toflexible isolation layer.3.The columns are applied to the flexible isolation system,its lateral stiffness is the key factor,according to numerical simulation of the parameters in the formula through theoretical analysis,the results and compared with the numerical simulation results analysis,which can be developed columns lateral stiffness has certain reliability and more general.4.According to the numerical simulation and theoretical analysis it is concluded that the best axial compression ratio,shear span ratio,concrete strength grade,respectively in the finite element software to establish the framework of empty space of the column and fission column as a whole structure,the different frequency of the input earthquake affected under different intensity contrast research both reaction,interlayer displacement,acceleration and displacement parameters such as peak ground acceleration,finally developed columns stilt floor has a certain isolation effect,especially suitable for application Yu Xiaozhen and earthquake in the earthquake.5.Finally,the chapters are summarized and related technology of split columns.