Intelligent Hybrid Damper-actuator Bracing Control (HDABC) with Deterministic and Nondeterministic Seismic Input, Soil-structure Interaction, and Tectonic Movements

摘要

In recent decades, the control of civil engineering structures to alleviate the dynamic response under earthquake and other environmental loads has received an extensive attention from researchers and practitioners. A diversity of devices and methods has been developed in each category of structural control: active, passive, hybrid and semi-active controls. A Hybrid Damper-Actuator Bracing Control (HDABC) system was developed by F. Y. Cheng at UMR with his collaborators in the US, Korea, China, and Japan. This paper emphasizes on: (1) Introduction of HDABC system and development of an intelligent algorithm. The system adopts advantages of active and passive parts and also prevents their shortcomings. The external energy can thus be saved. (2) Analytical studies of hybrid controlled structures with Soil-Structure Interaction (SSI). The effect of SSI on controlled structures can be significant when a building rests on a soft base. The SSI influences on the control effectiveness and the application of intelligent algorithm are examined. (3) Nondeterministic study of the HDABC by Monte Carlo method at the consideration of the future possible excitations. Various groups of earthquake ground motions are generated based on the seismic plate tectonic movements, wave propagation, and the soil surface effect at the building site. (4) Study of method for estimating the control force magnitude with respect to the building weight. The method can be used at the early stage of structural design in deciding controller's type and size. (5) Numerical illustrations of all the aforementioned concepts. Because of paper limit, simple structures are employed; however, extensive sample cases are available in the senior author's forthcoming PhD thesis.