Seismic applicability of a long-span railway concrete upper-deck arch bridge with CFST rigid skeleton rib
| Autor: | Yong-jiu Qian, Guo-qing Han, Chang-jiang Shao, Jiann-Wen Woody Ju |
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| Rok vydání: | 2017 |
| Předmět: |
business.industry
Mechanical Engineering Rigid frame 0211 other engineering and technologies Pendulum 02 engineering and technology Building and Construction Structural engineering Span (engineering) Deck Seismic analysis Flexural strength Mechanics of Materials Girder 021105 building & construction Geotechnical engineering Railway engineering business Geology 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | Structural Engineering and Mechanics. 61:645-655 |
| ISSN: | 1225-4568 |
| DOI: | 10.12989/sem.2017.61.5.645 |
| Popis: | To determine the seismic applicability of a long-span railway concrete upper-deck arch bridge with concrete-filled steel-tube (CFST) rigid skeleton ribs, some fundamental principles and seismic approaches for long-span bridges are investigated to update the design methods in the current Code for Seismic Design of Railway Engineering of China. Ductile and mixed isolation design are investigated respectively to compare the structural seismic performances. The flexural moment and plastic rotation demands and capacities are quantified to assess the seismic status of the ductile components. A kind of triple friction pendulum (TFP) system and lead-plug rubber bearing are applied simultaneously to regularize the structural seismic demands. The numerical analysis shows that the current ductile layout with continuous rigid frame approaching spans should be strengthened to satisfy the demands of rare earthquakes. However, the mixed isolation design embodies excellent seismic performances for the continuous girder approaching span of this railway arch bridge. |
| Databáze: | OpenAIRE |
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