Nonlinear Dynamic Analysis of Bridges with Sliding Rubber Bearings and Restrainers or Fluid Viscous Dampers
Date Issued
2007
Date
2007
Author(s)
Wang, Tz-Wei
DOI
zh-TW
Abstract
The purpose of this thesis was to study responses of bridges with sliding rubber bearings and restrainers or fluid viscous dampers under earthquakes. In this study, three earthquake time histories corresponding to the design spectrum were applied to nonlinear dynamic analysis of the structure. Subjects were the beam’s displacement (relative to the top of the column) and the force taken by the substructure. Variables used included period of structures, safety factors and gap of restrainers, damping exponent and coefficient of fluid viscous dampers. Four models were tested to study the effect of different variables on the behavior of a bridge with sliding rubber bearings and unseating prevention devices. Besides, the study also proposed simple design procedures for restrainers and fluid viscous dampers. Finally, collision between two superstructures was simulated in order to investigate if collision can effectively control the beam’s displacement (relative to the top of the column).
Subjects
落橋
非線性動力
橡膠支承墊
防震拉桿
阻尼器
碰撞
unseating
bridge
restrainers
viscous dampers
collision
rubber bearing
Type
thesis
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