FPB 隔震結構之耐震評估與控制

Abstract

本文藉由數值模擬分析探討摩擦單擺支承應用於房屋隔震之可行 性。並提出分別以調和 質量阻尼器（被動控制）及質量制動器（ 主動控制）抑制上部結構位移，俾增進摩擦單 擺支承之實用性。 將透過參數研究，找出調和質量阻尼器的最佳設計準則；主動控 制系 統的設計係採用離散時間域中建立之預測控制法則，並考慮 時間延遲效應。此外並發展 出改良式剪力平衡法，繼而擴展成雙 軸剪力平衡法以利分析立體構架平面運動之非線性 動態反應。本 文研究結果顯示，摩擦單擺支承可有效應用於堅硬地盤之房屋隔 震，而其 在軟弱地盤上之應用須配合被動或主動控制方式，即採 混合控制方式以降低上部結構位 移。 In this thesis, the feasibility of using the Friction Pendulum Bearing (FPB), for aseismic design of structures is verified through numerical simulations. I mplementation of either Tuned Mass Damper (passive control) or Active MassDam per(active control),respectively,for displacement control of primary structure are proposed to improve the applicability of FPB. Optimal designparameters fo r the TMD can be obtained through parametric studies.Control designof the acti ve system is based on the predictive control algorithm developedin a discrete- time domain. The effect of time-delay is taken into account.Moreover, the impr oved Shear Balance Method is developed and extended into Bi-axial Shear Balanc e Method for nonlinear dynamic analysis of 3-D frames. It is concluded that F PB is effective for isolation of structures in seismicof hard soil profile, wh ile its application in zones of soft soil profile mustbe associated with passi ve or active control devices (the so called hybrid control), to reduce the dis placement of primary structures.