Dynamic Response of a Rigid Slab Supported by Four Rigid Cylindrical Rocking and Wobbling Columns

Open access
Date
2017-09Type
- Conference Paper
ETH Bibliography
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Abstract
Letting columns uplift has been proposed as an earthquake response modification strategy for bridges and other large structures. Uplift could be allowed along solely one di-rection of the structure or along both directions. In order for the latter approach to be imple-mented, the 3d behavior of systems allowed to uplift, rock and wobble should be studied. This paper studies the dynamic response of a rigid slab supported on 4 rigid cylindrical rocking and wobbling columns. The columns are constrained not to roll out of their initial position, which is a necessity for the system to be resilient. This system is the simplest 3d extension of the 2d rocking frame system.The equations of motion are derived analytically and directly numerically integrated. Since the system has only 2DOFs it is computationally inexpensive and allows for extensive para-metric analysis. Similar to the 2d rocking frame, it is found that the addition of the slab makes the investigated frame more stable than the individual columns. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000161255Publication status
publishedExternal links
Book title
COMPDYN 2017: Computational Methods in Structural Dynamics and Earthquake Engineering. Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake EngineeringVolume
Pages / Article No.
Publisher
Institute of Structural Analysis and Antiseismic Research, School of Civil Engineering, National Technical University of Athens (NTUA)Event
Subject
Earthquake Engineering; Rocking; Uplifting Structures; Wobbling; BridgesOrganisational unit
03930 - Stojadinovic, Bozidar / Stojadinovic, Bozidar
09663 - Vassiliou, Michalis / Vassiliou, Michalis
Funding
153240 - Development of self-centering systems with geometry-controlled stiffness for earthquake hazard mitigation (SNF)
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ETH Bibliography
yes
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