题名: |
Response of the Northwest Connector in the Landers and Big Bear Earthquakes |
作者: |
Fenves, G. L.; Desroches, R. |
关键词: |
Dynamic response; Soil structure interactions; Highway bridges; Earthquake resistant structures; Structural response; Earth movements; Earthquakes; Structural vibration; Displacement; California; Ground motion; Foundations(Structures); Earthquake engineering; Structural analysis |
摘要: |
The response of the Northwest Connector in the 1992 Landers and Big Bear earthquakes was recorded by a strong motion instrumentation network. The Connector is a 2540 ft. curved bridge constructed in 1973 and retrofitted for improved earthquake performance in 1991. Although the peak ground acceleration was approximately 0.10 g at the site for both earthquakes, much less than the level of ground motion expected in a major earthquake, the strong motion data provides important information about the earthquake response of a typical curved freeway bridge. The objectives of the study are to: evaluate the importance of non-uniform support motion on the response of the bridge; determine the vibration properties of the bridge; determine efficacy of typical modeling and dynamic analysis techniques used in the design of bridges to predict the response recorded in the earthquakes; and examine the role of the intermediate hinges on the earthquake response of the bridge. |
总页数: |
154p |
报告类型: |
科技报告 |