A Study on Seismic Retrofit of Suspended Transportation Systems and Automated Storage Systems in A High-tech Fabrication Plant

Abstract

<p>高科技廠房中懸吊式運輸系統（OHCV）與自動化倉儲系統（STK）為重要且不可於地震時停機之設施。2016年0206美濃地震中，某科技廠內該二系統因地震影響，設備物與產品嚴重損壞，致使系統無法短時間內修復完畢、恢復運轉，而損失大量金錢與產品。本研究目的為提升既有高科技廠房OHCV與STK之耐震能力，藉已驗證結構模型系統模擬地震下的模態與反應特性，並利用靜態側推與振動台實驗確認補強可行性，同時考量廠內現況、施工性、經濟性，分別提出經實驗驗證之有效補強系統。最後，補強電腦模擬皆顯示在設計地震下，系統反應確實較小。</p> <p> </p><p>The Overhead Conveyor (OHCV) and Stocker (STK) are most frequently used transportation and storage systems in high-tech factories and should not stop operation in an earthquake. However, these two systems are vulnerable to earthquake based on the Taiwan experience. In 2016 during Meinong Earthquake, damage of these two systems led to serious impact on high-tech factories. It not only shut down the production line, caused huge economical lose, but also delayed recovery process. This study aims to increase the seismic capacity of OHCV and STK for a high-tech factory. First, a rough numerical model to realize the true response under earthquake in the clean room was developed. By using full-scale static test and shaking table test, we can validate the dynamic characteristic of the numerical models. By considering the in-site situation, construction feasibility, and the economic demand, retrofitted bracing systems are developed. The strength of bracing is verified by component tests. Then, the efficiency for retrofitted OHCV and STK is verified by static tests and shaking table tests. Finally, the computed response in fab showed a drastically reduced response after the proposed retrofit.</p> <p> </p>