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Semi-active Control Design of High-rise Seismic Isolated Building Using a Single-mass Model With Time-varying Damping Switching Condition Applied to Predominant Frequency of Earthquake Motion

Year: 2026

Type: article

Abstract: Semi-active control by optimal control of two-stage variable damper determines variable damping by comparing the optimal control force obtained from structural response feedback with a threshold called damping switching condition. This study proposes a methods for varying the damping switching condition based on predominant frequency of earthquake motion. In designing the control, assuming the seismic isolated building is rigid and using a single-mass model allows design to consider only the primary natural mode. Applying the control designed using a single-mass model to a multi-mass model demonstrated superior control performance compared to conventional methods using a fixed damping switching condition.

Source: Journal of Structural and Construction Engineering (Transactions of AIJ)

DOI: 10.3130/aijs.91.450

Authors: Daichi HATANO, Nanako MIURA

Institution: Kyoto Institute of Technology

Language: English

Topic: Vibration Control and Rheological Fluids

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Sustainable cities and communities, Industry, innovation and infrastructure

Open Access status: bronze

OpenAlex ID: W7147640688

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