ANALYTICAL SOLUTION OF THE DYNAMIC RESPONSE OF SUSPENSION BRIDGE TOWER–PIER SYSTEMS WITH DISTRIBUTED MASS TO BASE EXCITATION

2000 ◽  
Vol 229 (3) ◽  
pp. 467-490
Author(s):  
C.J. YOUNIS ◽  
D.E. PANAYOTOUNAKOS
Keyword(s):  
Analytical Solution ◽  
Dynamic Response ◽  
Suspension Bridge ◽  
Base Excitation ◽  
Bridge Tower

scholarly journals Analytical Solution of the Steady State Response of Suspension Bridge Tower-Pier Systems with Distributed Mass to Harmonic Base Excitation

2002 ◽  
Vol 21 (3) ◽  
pp. 157-168 ◽  
Author(s):  
C.J. Younis ◽  
D.E. Panayotounakos
Keyword(s):  
Steady State ◽  
Suspension Bridge ◽  
Equation Of Motion ◽  
Steady State Response ◽  
Viscoelastic Foundation ◽  
Base Excitation ◽  
State Response ◽  
The Galerkin Method ◽  
Bridge Tower ◽  
Lateral Deflections

A typical suspension bridge tower-pier system is considered, the tower mass of which is not negligible and assumes an arbitary distribution along the tower. The pier rests on a viscoelastic foundation and can follow rotational and horizontal motion. The surrounding soils perform a horizontal harmonic motion. The equation of motion of the pier as well as the partial differential equation of the lateral deflections of the tower with the accompanying boundary conditions, are derived. The solution of the above p.d.e. is taken as a sum of terms, each one corresponding to an eigenshape of vibration of the tower. Applying the Galerkin method a system of ordinary differential equations results. The system of all the o.d.e.′s of motion (the pier's and the tower's) is solved for the steady state response, and based upon the resulting deflections, the stresses along the tower are determined. A parametric study is carried out.

Dynamic response of tertiary systems in structures subjected to base excitation

1988 ◽  
Vol 10 (3) ◽  
pp. 185-193 ◽  
Author(s):  
Alan G. Hernried ◽  
Kai-Sing Lau
Keyword(s):  
Dynamic Response ◽  
Base Excitation

scholarly journals Determination of reasonable damage index for suspension bridge tower

2018 ◽  
Vol 439 ◽  
pp. 042067
Author(s):  
Lei Liu ◽  
Tieyi Zhong ◽  
Guangzhi Fu ◽  
Junhua Xiao
Keyword(s):  
Damage Index ◽  
Suspension Bridge ◽  
Bridge Tower

Dynamic Response of the Vertical Rotor System to Base Excitation

2008 ◽  
Author(s):  
Jianli Zuo ◽  
Jianjun Wu ◽  
Ping Li ◽  
Shenjian Su
Keyword(s):  
Dynamic Response ◽  
Physical Model ◽  
High Speed ◽  
Lagrange Equation ◽  
Rotor System ◽  
Operating Speed ◽  
Base Excitation ◽  
Rotating Machine ◽  
Vertical Rotor ◽  
Rotary Speed

The physical model of a high-speed vertical rotating machine was taken as the example. The motion differential equations of the rotor system were established by the Lagrange equation and numerically solved by the Wilson-θ method. The whirling characteristics of the rotor excited by the base’s harmonic motions have been analyzed. The whirling directions are different between the rotor’s upper and lower ends. And the whirling characteristics of the rotor vary with the frequency of the base’s motion. Besides, there exists such a region of the rotor’s rotary speed, in which the whirling characteristics and amplitudes of the rotor system are relatively steady, so the aseismic tests at a certain lower speed can be done to examine the aseismic capability of the rotor system at operating speed.

scholarly journals Estimation of the dynamic response of a slender suspension bridge using measured acceleration data

2017 ◽  
Vol 199 ◽  
pp. 3047-3052 ◽  
Author(s):  
Øyvind Wiig Petersen ◽  
Ole Øiseth ◽  
Eliz-Mari Lourens
Keyword(s):  
Dynamic Response ◽  
Suspension Bridge ◽  
Acceleration Data
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