Civil structures located in multiple natural hazards regions must withstand the effects of various natural hazards. A notable example of structures is bridges located in regions that are subject to flood and earthquake hazards. The rapid water flow during a flood event can erode the riverbed and causes local scour around the bridge piers, and normally exposes the bridge foundation. In order to understand the seismic behavior and soil-structure interaction effect of the scoured bridge foundations, a series of shaking table tests was conducted for a model piled bridge foundation embedded in a biaxial laminar shear box with different levels of exposure depth at the National Center for Research on Earthquake Engineering in Taiwan. This paper investigates the use of the finite element model of the soil-pile system to simulate the response of test specimens embedded in dry sand and subjected to earthquake excitation. Results from numerical simulation indicate acceptable agreement with the experiment. The finite element model can reasonably capture the measured acceleration and displacement time history of the superstructure and pile-cap. Favorable results observed in the simulation add confidence to the use of such models for assessing the performance of bridges that suffer from foundation exposure problems.
|Publication status||Published - 2014 Jan 1|
|Event||10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering, NCEE 2014 - Anchorage, United States|
Duration: 2014 Jul 21 → 2014 Jul 25
|Other||10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering, NCEE 2014|
|Period||14-07-21 → 14-07-25|
All Science Journal Classification (ASJC) codes
- Geotechnical Engineering and Engineering Geology