Shake-Table Studies of a Four-Span Bridge Model with Advanced Materials
- 1 February 2012
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Structural Engineering
- Vol. 138 (2), 183-192
- https://doi.org/10.1061/(asce)st.1943-541x.0000457
Abstract
As part of a major study on the seismic response of bridge systems with conventional and advanced details, a large-scale model of a 4-span bridge incorporating several innovative plastic hinges was recently tested on shake tables at the University of Nevada, Reno. The bridge model included six columns, each pair of which utilized a different unconventional detail at the bottom plastic hinges: shape memory alloys (SMAs), engineered cementitious composites (ECCs), elastomeric pads embedded into columns, and posttensioning tendons. The bridge model was subjected to two horizontal components of simulated earthquake records of the 1994 Northridge earthquake in California. More than 340 channels of data were collected. Test results showed the effectiveness of the innovative materials in reducing damage and permanent displacements. The damage was minimal in plastic hinges with SMA/ECC and those with built-in elastomeric pads. Conventional reinforced concrete plastic hinges were severely damaged because of spalling of concrete and rupture of longitudinal and transverse reinforcement.Keywords
This publication has 11 references indexed in Scilit:
- Experimental Study of Precast Bridge Columns with Built-In ElastomerTransportation Research Record: Journal of the Transportation Research Board, 2010
- Simulation of self-centring fibre-reinforced concrete columnsProceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics, 2008
- Seismic Testing of a Two-Span Reinforced Concrete BridgeJournal of Bridge Engineering, 2008
- Pilot Study of Behavior of Concrete Beams Reinforced with Shape Memory AlloysJournal of Materials in Civil Engineering, 2007
- Shape Memory Alloys for Seismic Response Modification: A State-of-the-Art ReviewEarthquake Spectra, 2005
- Unbonded Posttensioned Concrete Bridge Piers. I: Monotonic and Cyclic AnalysesJournal of Bridge Engineering, 2003
- Unbonded Posttensioned Concrete Bridge Piers. II: Seismic AnalysesJournal of Bridge Engineering, 2003
- Repair and retrofit with engineered cementitious compositesEngineering Fracture Mechanics, 2000
- Theoretical Stress‐Strain Model for Confined ConcreteJournal of Structural Engineering, 1988
- Compression moduli for blocks of soft elastic material bonded to rigid end platesThe Journal of Strain Analysis for Engineering Design, 1979