橋墩結構物承受車輛載重動力反應震動及加裝高效能阻尼機構對減震效益之探討

An Investigation of Automobile in a Simple Idealization for Energy Dissipation Effects with Bridge Pier Structures and Advanced Damping Mechanism

洪銘佐(Ming-Zuo Hong)

指導教授 ： 邵可鏞

義守大學/理工學院/土木與生態工程學系/碩士(2016年)

摘要

台灣身在歐亞板塊與菲律賓海板塊之間，大小地震不斷，例如:921大地震，甲仙大地震，跟最近的台南大地震，這些地震都對人民的生命與財產都造成重大的傷害。台灣的交通建設擁有需多橋樑，地震對於橋樑來說是很重大的傷害，尤其是橋樑上還有車輛行走，當地震來襲時，橋樑上的車輛震動加上地震的震動，無異於加深對橋樑的傷害，利用前人所研發的高效能阻尼機構，在不變動橋梁本身之自然振動頻率、且不變動橋梁之勁度情形下，加裝於橋墩結構物來探討其減震效益。橋梁加裝高效能阻尼機構，在部改變結構之自然振動頻率、勁度下，但卻能加強橋梁結構的抗震效果，削弱地震對橋梁所造成的破壞。且加裝高效能阻尼消能機構可有效改善橋面板層間位移過小之影響，並於橋梁橫向、縱向均能有效改善橋面板位移量。
本研究分析與探討橋墩結構系統承受車輛載重動力反應震動加裝高效能阻尼機構對減震效益。針對橋墩結構系統加裝高效能阻尼機構及橋梁在含隔震支承以及車輛載重情形下加裝高效能阻尼機構之研究進行分析與探討，來探討其用來結構減震之控制，作為新建、補強及修復等結構工程的消能元件。以加強結構耐震上的效果，並能提昇新建、補強及修復等結構之耐震能力，將橋梁結構在地震力作用下之振動量大幅降低至可容許之範圍內，以確保人車和橋梁結構的安全，進而減緩地震所造成之災害。

關鍵字

橋梁結構物 ； 車輛載重動力反應 ； 消能減震結構 ； 阻尼器 ； 支承墊 ； 鉛心橡膠支承墊 ； 隔震設施

並列摘要

Taiwan is between the Eurasian Plate and the Philippine Sea plate, the size of the earthquake continued, for example: 921 Earthquake, Jiasian earthquake, with the recent earthquake in Tainan, these earthquakes to life and property of the people have caused significant damage. Taiwan's transportation construction have required more bridges, bridges for earthquake damage is very significant, especially in vehicles as well as walking on the bridge, when the earthquake struck, shaking the vehicle on the bridge plus seismic vibrations, is tantamount to deepen bridge damage, the use of high-performance damping mechanism developed by our predecessors, without changes in the natural vibration frequency of the bridge itself, and does not change the stiffness of the case under the bridge to explore the benefits of adding damping to the pier structure. Bridge installation of high-performance damping mechanism in the unit to change the natural frequency of vibration of the structure, under the stiffness, but it can enhance the effect of seismic bridge structures, weakening the destruction caused by the earthquake on the bridge. And the installation of high-performance damping energy dissipation mechanism can effectively improve inter-deck drift too little effect, the bridge and in the horizontal, vertical, can effectively improve the amount of displacement of the bridge deck.
Analysis and Discussion This study pier structural system subjected to load dynamic response of the vehicle to install high-performance vibration damping mechanism for damping effectiveness. Pier structural system for the installation of high-performance damping mechanism and bridge support in containing isolated case and the vehicle load damping installation of efficient research institution can perform analysis and discussion to explore the damping of the control structure is used as a new, reinforced energy dissipation element and structural repair works. To enhance the effect of structural seismic on, and can enhance the new, seismic capacity reinforcement and repair structures, the bridge structure in the amount of vibration under earthquake forces greatly reduced the range to be permitted by law, to ensure that people and vehicles and the bridge structure safety, thus slowing the disaster caused by the earthquake.

並列關鍵字

bridge pier structure ； vehicle load dynamic response ； energy dissipation systems ； damper ； rubber bearing ； lead rubber bearing ； isolated facilities

參考文獻

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