Experimental Study on the Seismic Performance of a Large-Scale TLD Model with Sloped Bottoms

Abstract

A slope-bottom tuned liquid damper (TLD) was previously found to be an effective wave-energy dissipater in various tests of a 1/4-scale three-story model. In this study, to ensure that the nonlinear feature of a prototype TLD is properly represented, the 1/2-scale model of a three-story steel frame structure was tested on the shaking table to study the seismic performance of a large-scale TLD with three sloped bottoms: V-, W-, and Arc shapes. In comparison with small-scale model tests, the large-scale model tests more effectively demonstrated the seismic effectiveness of a slope-bottom TLD in the mitigation of structural responses under strong earthquake excitations. The V- and Arc shaped bottoms of a TLD are more effective than the W-shaped bottom due to more liquid engaged with sloshing motion.

Meeting Name

Structures Congress - Don't Mess with Structural Engineers: Expanding Our Role (2009: Apr. 30-May 2, Austin, TX)

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Arc Shape; Earthquake Excitation; Experimental Studies; Large-Scale Model Test; Nonlinear Features; Seismic Performance; Shaking Tables; Sloshing Motion; Small-Scale Models; Steel Frame Structures; Structural Response; Tuned Liquid Dampers; Cavity Resonators; Seismic Waves; Seismology; Structural Frames; Liquid Sloshing

International Standard Book Number (ISBN)

978-0784410318

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2009 American Society of Civil Engineers (ASCE), All rights reserved.

Publication Date

01 Apr 2009

Link to Full Text

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