應用非線性靜力側推分析訂定建築物樓板需求加速度之程序與驗證

Seismic demand acceleration of non-structural elements attached to building floors using nonlinear pushover analysis

10.6849/SE.202309_38(3).0005

邱聰智(Tsung-Chih Chiou)；鍾立來(Lap-Loi Chung)；賴昱志(Yu-Chih Lai)；趙奕涵(Yi-Han Chao)；(Jae-Do Kang)；(Koichi Kajiwara )

非線性靜力側推分析 ； TEASPA ； 容量震譜 ； 樓板需求加速度 ； nonlinear pushover analysis ； TEASPA ； capacity Spectron ； demand acceleration of building floor

結構工程

38卷3期（2023 / 09 / 01）

94 - 112

繁體中文;英文

目前台灣非線性靜力分析常用TEASPA提供的公式計算結構單自由度下的容量震譜，若非線性靜力分析能準確預測結構的反應，則對樓板加速度需求等等的計算會有極大的幫助。故本篇文章嘗試用台灣TEASPA的評估方法去預測2015年在日本進行的十層樓RC振動台實驗（E-Defense）的動力反應，以驗證其可信度。此篇文章先由TEASPA算出的耐震容量值Sa和單自由度模型以真實地震波激震後得到的最大加速度值進行比較，驗證TEASPA之耐震容量準確度。再來將試體模型進行側推分析後得到之各樓層加速度值和真實實驗所得之各樓層最大加速度值進行比較分析，進而提出訂定各樓層預估加速度需求值的建議程序，該程序為以TEASPA側推分析選定結構之耐震性能點，此時可得到的屋頂加速度，將之放大2倍作為安裝在屋頂板上之非結構物的樓板設計需求值，接著以該屋頂層樓板加速度值為基準，乘以1/2做為二樓樓板加速度需求值，其餘各層樓板加速度需求值則依樓層數線性內插。

Taiwan Earthquake Assessment for Structures by Pushover Analysis (TEASPA) can provide a capacity spectron of an equivalent single degree of freedom system. The predicted structural response can be applied to determine seismic demand acceleration of non-structural elements attached to building floors. The study adopts the shaking table testing results of ten-story RC building by E-defense in 2015 to verify TEASPA’s predicted response of the building. The predicted capacity Spectron Sa is compared to the maximum acceleration of an equivalent SDOF under a real excitation history. The comparison will be discussed in this paper. Eventually, the study proposed a procedure on seismic demand acceleration for non-structural components attached to building floors.

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