Backbone curves with physical parameters for passive lateral response of homogeneous abutment backfills
| Autor: | Anoosh Shamsabadi, Jonathan P. Stewart, Payman Khalili-Tehrani, Ertugrul Taciroglu |
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| Rok vydání: | 2016 |
| Předmět: |
Engineering
Hydrogeology Field (physics) business.industry 0211 other engineering and technologies Abutment 020101 civil engineering 02 engineering and technology Building and Construction Structural engineering Geotechnical Engineering and Engineering Geology 0201 civil engineering Seismic analysis Nonlinear system Geophysics Soil structure interaction Transient (oscillation) business 021101 geological & geomatics engineering Civil and Structural Engineering Parametric statistics |
| Zdroj: | Bulletin of Earthquake Engineering. 14:3003-3023 |
| ISSN: | 1573-1456 1570-761X |
| DOI: | 10.1007/s10518-016-9934-3 |
| Popis: | Recent advances in performance-based seismic assessment and design of bridges call for the development of computationally efficient models with high fidelity for nonlinear static pushover and transient dynamic analyses. Response models of bridge abutment systems are significant ingredients of such analyses. Herein, we present closed-form relationships for lateral response of abutment backwalls with uniform backfills. These relationships are obtained by performing extensive parametric studies with a previously validated limit-equilibrium model coupled with hyperbolic soil stress–strain relations. The resulting “Generalized Hyperbolic Force–Displacement (GHFD)” backbone curve has explicit dependencies on the physical properties of the abutment system, including the backwall height. All input parameters to the GHFD relationships are measurable via standard geotechnical laboratory tests. We also perform a validation study using published measurements from several field and laboratory experiments. The GHFD equations are in closed form and can easily be implemented in a structural analysis package as a nonlinear spring that accounts for the bridge abutment–backfill interaction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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