即時複合實驗技術應用於鋼筋混凝土門型構架之實驗研究

SEISMIC TEST OF A REINFORCED CONCRETE PORTAL FRAME USING REAL-TIME HYBRID TESTING METHOD

10.6652/JoCICHE.202209_34(5).0003

葉士瑋(Shih-Wei Yeh)；盧煉元(Lyan-Ywan Lu)；蕭輔沛(Fu-Pei Hsiao)；張汎博(Fan-Po Chang)

即時複合實驗 ； 主動控制 ； 鋼筋混凝土結構 ； 時間延遲補償器 ； 大型結構耐震實驗 ； real-time hybrid testing ； active control ； reinforced concrete structure ； delay time compensator ； seismic tests for a full-scale structure

中國土木水利工程學刊

34卷5期（2022 / 09 / 01）

375 - 385

英文

振動台實驗為常用之結構耐震測試方法之一，但受限於試體成本與設備性能，振動台實驗難以進行足尺大型鋼筋混凝土（RC）建物之測試。為解決此問題，本文旨在利用門型RC構架發展足尺鋼筋混凝土建物之即時複合實驗技術並加以驗證。此項實驗技術原理係將結構系統分為主結構與子結構兩個子系統，其中主結構以數值模型代替，而子結構則以致動器進行實體測試。本文實驗結果顯示即時複合實驗確可模擬足尺鋼筋混凝土結構受地震力作用下之動力反應，且本文所採用之時間延遲補償方法可有效改善因RC構材特性複雜且勁度較高，使得致動器難以精確控制之問題。

Shaking table test (STT) is one of the well-known experimental methods to validate the seismic performance of the structures. However, an STT for a full-scale RC building may not be feasible due to the limitation of specimen cost and test equipment capacity. To solve this problem, the method of real-time hybrid testing (RTHT) may be utilized. The concept of RTHT is to divide a structural system into a primary structure whose dynamic responses is simulated by a numerical model, and a substructure that is physical tested with an actuator system. Therefore, the demands on specimen cost and the equipment capacity of the RTHT for a full-scale RC building will be much less than those of an STT. However, the application of RTHT for reinforced concrete (RC) structures is very rare due to the complex mechanical properties of RC structures. RC structures usually have a very high initial stiffness and significant degradation on stiffness and strength under a large deformation, which may make the actuators in RTHT difficult to be controlled as desired. To investigate this problem, a RC portal frame is utilized to verify the reliability of the RTHT for a full-scale RC building in this study. The comparison between the RTHT and theoretical results shows that the dynamic responses of the RC building subjected to seismic excitations can be experimentally simulated by the RTHT and the control performance of the actuator can be improved by the compensation method employed in this study.

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1. (2024)。複合實驗於鋼筋混凝土結構耐震補強試驗之應用。結構工程，39(1)，75-101。