Seismic behaviour of shallow foundations: Shaking table experimentsvs numerical modelling
| Autor: | Roberto Paolucci, Masahiro Shirato, M. Tolga Yılmaz |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Superstructure
Earthquake engineering Engineering Computer simulation business.industry Settlement (structural) dynamic soil-structure interaction Foundation (engineering) Stiffness shaking table tests Geotechnical Engineering and Engineering Geology Shallow foundation shallow foundations nonlinear macro-element Earth and Planetary Sciences (miscellaneous) medicine Earthquake shaking table Geotechnical engineering medicine.symptom business |
| Zdroj: | Earthquake Engineering & Structural Dynamics. 37:577-595 |
| ISSN: | 1096-9845 0098-8847 |
| DOI: | 10.1002/eqe.773 |
| Popis: | The capability of a simplified approach to model the behaviour of shallow foundations during earthquakes is explored by numerical simulation of a series of shaking table tests performed at the Public Works Research Institute, Tsukuba, Japan. After a summary of the experimental work, the numerical model is introduced, where the whole soil–foundation system is represented by a multi-degrees-of-freedom elasto-plastic macro-element, supporting a single degree-of-freedom superstructure. In spite of its simplicity and of the large intensity of the excitation involving a high degree of nonlinearity in the foundation response, the proposed approach is found to provide very satisfactory results in predicting the rocking behaviour of the system and the seismic actions transmitted to the superstructure. The agreement is further improved by introducing a simple degradation rule of the foundation stiffness parameters, suitable to capture even some minor details of the observed rocking response. On the other hand, the performance of the model is not fully satisfactory in predicting vertical settlements. Copyright © 2007 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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