Analysis Of Aseismic Design & Isolation Of The Login Hall On One International Convention And Exhibition Center Project In Qingdao

In recent years,domestic and foreign earthquakes frequently occur,each of which usually caused severe economic property losses and casualties.China is located between the Eurasia seismic belt and the Pacific ring seismic belt,and seismic disasters often occur.Therefore,it is the practical need of China’s economic and social development to study the seismic design of buildings.At present,the design idea of building seismic resistance in China is mainly based on the performance of building structures.This requires a clear seismic performance target of the structure.The maximum displacement response and maximum acceleration response of the structure during the earthquake action are two equally important aspects,which should belong to the performance target category.In addition,the energy dissipation and isolation technology of the building should be combined.The study of the seismic isolation technology of the structure has become a focus in the field of seismic resistance of the structure.The red island convention and exhibition center studied in this paper is located in the high-tech zone of Qingdao city,which is composed of login hall,single-floor exhibition hall,double-floor exhibition hall and attached skirt room.This paper USES the finite element software SAP2000 to analyze the nonlinear dynamic time history of the landing hall of the grid structure,and studies the seismic performance of the grid structure by inputting different seismic waves.According to the characteristics of this grid structure,the main research work in this paper is as follows:1)In view of the characteristics of large span and complex structure of the grid structure,the finite element software SAP2000 was first used to conduct modal analysis of the grid structure,and the natural vibration period and natural vibration frequency of the structure were analyzed.2)The SAP2000 finite element model was established for this grid structure,and the displacement of the structure under the gravity load and the stress of the bar were analyzed.Based on this,the maximum stress of joints and bars of the structure were determined,and the direction and target were determined for subsequent nonlinear analysis.3)The red island international convention and exhibition center is located in Qingdao city.After the wen chuan earthquake,our country improved the seismic fortification intensity of many domestic cities.At present,the seismic fortification intensity of Qingdao city is 7 degrees.Therefore,it is necessary to conduct the seismic check calculation of the grid structure under the rare earthquake,and analyze whether the displacement and acceleration response of the structure meet the requirements.4)Large-span spatial structures are more likely to be damaged in the event of an earthquake due to their large span and complex force.Energy dissipation technology can be used to prevent structural collapse and reduce structural damage.Energy dissipation and damping technology belongs to the category of structural vibration control.In this paper,the seismic energy is consumed by replacing the ordinary bearing with the isolation bearing,so as to reduce the seismic response of the structure and realize energy dissipation and shock absorption.The analysis of seismic isolation shows that the application of seismic isolation technology enables the structure to meet the seismic fortification requirements of the 7 degree region.5)In addition to the seismic and seismic isolation calculation of this grid structure in accordance with the fortification intensity in the 7 degree area of Qingdao,In this paper,the seismic resistance and seismic isolation of the grid structure are analyzed according to the intensity of the 8 degree region.The results show that the grid structure with seismic isolation measures meets the seismic requirements.