Research on Determination of Shear Wave Velocity Based on Reaction Displacement Method
Seismic special demonstration of underground structrue is an important part of underground structrue design,usually use reaction displacement method to calculate.The three factors related to anti-seismic design in reaction displacement method are shear force,inertia force,and relative displacement.And shear force is determinded by shear wave velocity,but there are no specific regulations or methods for shear wave velocity,how to define shear wave velocity is significant for anti-seismic design.Define shear wave through field soillayer equivalent share wave velosity method,weighted average method and single Rock or soil layers method,use reaction displacement method calculate and analysis bending moment value,shear force and axial force value,the analysis shows it is more reasonable to define shear wave through field soillayer equivalent share wave velosity method when use reaction displacement method to anti-seismic design,field soillayer equivalent share wave velosity method is a basis for define shear wave in undergroud structrue anti-seismic design and have engineering significant.
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