The Earthquake Hazard Evaluation And The Research Of The Anti-seismic Fortification Of Laiwu City

In this paper , base on the synthetic analysis of the earthquake hazard of Laiwu city , the anti -seismic fortification standards (the design intensity and the seismic design dynamic coefficient ) in diferent areas of the city are given.First of all ,it determines the scope in which earthquake might be genetated , the potential seismic sources areas and the upper limit of the earthquake magnitude through the analysis,research and evaluation of the area seismic geological condition of the workzone .Secondly,according tothe research of the seismic activity , it also determines the seismic activity coefficients for per potential seismic sources areas,and the delay relation of seismic intensity and seismic accelaration,and then three different seismic intenstities and dynamic strength of bedroch under different probability are given .through the analysis and caculation of earthquake hazard with the analytic approach of probability. Thirdly .based on the analysis of the engineering geology , hydrogeology and the dynamic peculiarity of the site soil , and the analysis and caculation of the seismic reaction , it gains the anti -seismic design coefficient and divided the city area into three seperate defence zones .marked A ,B ,C .Finally , it makes a researsh of the seismic effect of the site of the city and makes the suggestions of the land utilizing .dividing the city land into 4 sub-zones .The research in this paper offers a theoretical foundation for city antidetonation and anti-seismic design .