Real-time hybrid simulation of full-scale tuned liquid column dampers to control multi-order modal responses of structures. (1st May 2017)

• Record Type: Journal Article
• Authors: Zhu, Fei; Wang, Jin-Ting; Jin, Feng; Lu, Li-Qiao
• Is Part Of: Engineering structures. Volume 138(2017:May 01)
• Page Start: 74
• Page End: 90
• Publication Date: 2017-05-01
• Subjects: Real-time hybrid simulation -- Tuned liquid column damper -- Multi-order modal response -- Control effect -- Rigid and flexible foundations -- Soil-structure interaction; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2017.02.004
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: An RTHS framework is developed to carry out full-scale experiments of TLCD-structure-foundation systems. Using MTLCD to control multi-order modal responses of a 9-story benchmark building is comprehensively investigated. The SSI effect on TLCD performance is examined with consideration of both fixed and artificial boundaries. Abstract: This paper aims to demonstrate the real performance of tuned liquid column dampers (TLCDs) in controlling seismic response of multi-degree-of-freedom (MDOF) structures based on the advantages of real-time hybrid simulation (RTHS). An RTHS framework is developed to carry out full-scale experiments of TLCD-structure-foundation system, and the application of multiple TLCDs to control single-order and multi-order modal responses of a nine-story benchmark building is investigated, respectively, as an example. Moreover, the effect of soil–structure interaction (SSI) on TLCD performance is examined, in which the finite and semi-infinite soil flexible foundations are simulated through a finite element model with 1160 DOFs embedding fixed and artificial boundaries, respectively. Results show that MTLCD is more effective than a single TLCD in suppressing structural responses; and the former is suggested to be used to control multi-order modal responses because of the uncertainty of the frequency content of earthquake excitations. The SSI effect significantly reduces TLCD performance, and the semi-infinite foundation may eliminate the control effect of TLCD due to the radiation damping effect. The parameters of the TLCD device should be regulated according to the characteristics of SSI-structure system when the SSI effect is unneglectable.