震動台樓房受地震力作用下之電腦模擬與驗證

Numerical and Experimental Study of a Shaking Table Specimen

本文提出一個反覆裂縫模型（cyclic cracking model）來模擬鋼筋混凝土結構物受到地震力作用時的反應。此一數值模型是以FORTRAN 電腦語言寫成，經編譯無問題後，再連結於有限元素法軟體LUSAS 之主程式上。至於實驗之驗證上，本文取得一座三層樓房屋放置於地震震動台之實驗資料與結果。此一實驗為瑞士國家地震研究中心（ETH）所執行之地震研究。在數值分析方法中，本文採用了有限元素法、破裂力學理論與彈塑性力學理論來預測結構物的受震行為。分析結果顯示，反覆裂縫模型的模擬結果與實驗結果相當吻合。

In this paper, a cyclic cracking model is proposed to model thebehavior of reinforced concrete structures under earthquake-like dynamicloading. This model has been implemented into a FE program (LUSAS)using the MMI (material model interface) facility to simulate reversed andcyclic loading. A shaking table test, performed at ETH of Switzerland, hasbeen chosen for comparison. The test performed on the shaking tablesimulated a wall of a 3-storey building. In this study, the finite elementmethod was used and the maximum tensile strength criterion was adopted.The results showed that the cyclic cracking model has reasonableagreement with the experimental results.