功能設計法之層間變位檢核需求探討

Estimation of story drift demand for Seismic Performance Evaluation

歐陽毅(Ou Yang. I)

指導教授 ： 林炳昌 ； 張正博

中原大學/工學院/土木工程研究所/碩士(2001年)

https://doi.org/10.6840/cycu200100131

摘要

摘 要

美國SEAOC Blue Book提出之功能設計法草案中，要求檢核建築物在各回歸期地震下的非線性層間變位角，以確保結構體在各危害度等級下仍可保持其應有的功能性水準。
本文藉由改進容量震譜法求出建築物之屋頂層變位角ADI 值、最大層間變位角(SDI)max值並歸納出台灣地區之COD值(COD=(SDI)max/ADI)。結果顯示,COD值會隨著結構物之週期升高而增加，而對低樓房（4樓）其COD值約為1.3，而對中、高樓房結構（12樓、20樓）可保守地取1.7為其 COD值。
文中並比較不同型態算例之差異性，並對進行改進容量震譜法分析時所選用的側力型式、降伏點決定方式之適用性進行探討，最後並與 Drain-2D+ 非線性時間歷時分析之結果印證之。

關鍵字

功能設計法 ； 改進容量震譜法 ； 層間變位角

並列摘要

ABSTRACT
According to the tentative guideline for performance-based seismic design in Blue Book provided by SEAOC, the designer is required to check the story drift ratio in order to assure the behavior of the building remaining in the desired levels of seismic performance corresponding to different specified levels of earthquake.
This thesis used the improved capacity spectrum method to estimate the average drift index（ADI）, the maximum story drift index（(SDI)max）, and furthermore concluded the ratio of (SDI)max to ADI, the value of COD. Based on the results, COD increases with the period of structure and the values of COD for low rise buildings and high rise buildings are approximately equal to 1.3 and 1.7 respectively.
Moreover this study discussed the effects of lateral load patterns and the representations of idealized bilinear models of capacity curve during the procedure of improved capacity spectrum method analysis. The results are compared to that of Drain-2D+ using time history analysis.

並列關鍵字

Performance-based design ； Improved capacity method ； Story drift index

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