Base isolation by geosynthetic for brick masonry buildings
- 21 September 2011
- journal article
- Published by SAGE Publications in Journal of Vibration and Control
- Vol. 18 (6), 903-910
- https://doi.org/10.1177/1077546311412411
Abstract
The use of geosynthetic in civil engineering applications has experienced tremendous growth. The concept of seismic isolation is applied here for vibration control to masonry buildings by separating the superstructure from the foundation at plinth level by a sliding earthquake energy reducing friction layer in the form of green marble/geotextile sliding couple. The dynamic properties of the friction interface have been investigated. The effect of the ground motion on the behavior of a friction isolation system is investigated analytically by using a synthetic accelerogram that is compatible with the design spectrum of Indian Standard corresponding to the level of maximum considered earthquake in the most vulnerable seismic zone (PGA = 0.36 g) of India as well as a recorded accelerogram of the El Centro earthquake. It is observed that the frictional base isolation provided by the geotextile limits the earthquake energy transmission to the superstructure during a strong earthquake. Fifty per cent reduction in absolute response acceleration at roof level for the isolated structure is obtained compared with a fixed base structure at the cost of peak base sliding displacement, which is well within a plinth projection of 75 mm (3 in) and appears to be a more economical and more practical choice than other alternatives for frictional base isolation of a single story brick masonry structure.Keywords
This publication has 8 references indexed in Scilit:
- Friction base isolation by geotextiles for brick masonry buildingsGeosynthetics International, 2010
- The Reinforced Cut Wall (RCW): A Low-Cost Base Dissipator for Masonry BuildingsEarthquake Spectra, 2006
- Geosynthetic Interface Behavior Under Dynamic LoadingGeosynthetics International, 1998
- EXPERIMENTAL STUDY OF FPS SYSTEM IN BRIDGE SEISMIC ISOLATIONEarthquake Engineering & Structural Dynamics, 1996
- Aseismic base isolation: review and bibliographySoil Dynamics and Earthquake Engineering, 1986
- Seismic Response of Masonry Buildings with Sliding SubstructureJournal of Structural Engineering, 1986
- Response of sliding structures to earthquake support motionEarthquake Engineering & Structural Dynamics, 1983
- Periodic response of a sliding oscillator system to harmonic excitationEarthquake Engineering & Structural Dynamics, 1983