Analysis Of Transverse Response Of Long Underground Structure Under Seismic Action

This paper consists of two parts: the first part is the theoretical analysis, the second partis numerical sumulation. In the theoretical analysis part, I use the structural dynamics methodto deduce the longitudinal bending vibration differential equation of underground structureuinder harmonic load. In these equations, I mainly examine the effect of following factors:single parameter foundation, double parameters foundation, internal and external friction,axial force and cross section shear deformation and the rotary inertia and give the practicalcalculation method for consideration of these factors. The vibration response curves refer tothe structure modulus of elasticity, the thickness of the structure lining, the first foundationcoefficient, the second foundation parameters, the axial force, cross section shear deformationand the rotary inertia are given. At last I also examine the influence of underground structure’svibration reponse due to Inertia properties and give some meaningful rule. In numericalsimulation aspects,3-D nonlinear seismic analyses has been performed by using theABAQUS finite element analysis Code, the influence of seismic waves with differentintensity on soil-underground structure has been analyzed. At the same time, I also examinethe influence of the system’s damping and compare the system’s dynamic response of theelastic and plastic model. The results of this topic research are useful for improving the saftyof the urban subway engineering, protecting people’s lives, reducing the economic loss,improviing the urban social and economic sustainable development.