以簡化反應譜法分析土壤互制下設備物之動力反應

Abstract

本文要點在於整合簡化的土壤-結構互制系統與合成系統反應譜法。將傳統的反應譜分析方法加入土壤互制元素，以得到更貼近真實的反應。 簡化方法的首要目的即為計算量的減少，對於土壤的模擬採用較為簡便的附加等值參數辦法，不使用有限元等複雜的計算。藉由該地點土壤的特性快速得到附加質量、阻尼、勁度參數且併入合成系統當中，以修正結構體的反應。 利用修正後的合成系統並考慮土壤的影響而簡化的反應譜法，在線性系統下可簡單地以主結構與設備物基本參數，如：兩者第一振態週期、阻尼比、聯接點位置，且直接搭配設計反應譜來使用，計算上相當簡便。本文最後以六樓、八樓、十三樓三個例子來做說明，並以狀態空間解來對照，檢視的簡化法的適用性。

The key point of this thesis is integrating the soil-structure interaction system into the response spectrum method. Base on the traditional response spectrum method then adding the soil-interaction elements to get closer to the true response. The first purpose of simplified method is reducing the computation. Use the simple and convenient additional equivalent parameters to simulate the soil instead of the finite element method which is more complication. Get the additional mass, damping and stiffness parameters quickly and integrate into the combination system to modify the response of structure. Use modified combination system and takes soil affect in to condition to simplify the response structure method. Then it can be easily used by the basic components of structure and secondary system, for example the first period, damping ratio and the structure which it is connected, and use the design spectrum directly. In the chapter 5, 3 calculating examples shows the process of simplified method and compared with the state space solution, to check the applicability of the simplified method.