原文传递
Behavior and Failure Analysis of a Multiple-Frame Highway Bridge in the 1994 Northridge Earthquake; Final rept. 1995-98
| 题名： | Behavior and Failure Analysis of a Multiple-Frame Highway Bridge in the 1994 Northridge Earthquake; Final rept. 1995-98 |
| 作者： | Fenves, G. L.; Ellery, M. |
| 关键词： | Highway bridges; Earthquake damage; Failure analysis; Damage assessment; Structural vibration; Ground motion; Seismic effects; Structural response; Bending moments; Displacement; Static stability; Brittle-ductible transitions; Nonlinear analysis; Three-dimensional models; Eartkquake engineering; California |
| 摘要： | The Route 14/Interstate 5 Separation and Overhead bridge, a curved ten-span concrete structure, partially collapsed in the 1994 Northridge earthquake. This study examined the cause of failure by comparing estimates of the capacities and demands of components in the bridge. Nonlinear static analysis (pushover analysis) is used to determine the capacity of a frame. Nonlinear dynamic analysis results are used to evaluate the earthquake response. The three-dimensional model fo the bridge was used to investigate the behavior of the bridge if it had been seismically retrofit prior to the earthquake. If the bridge had been retrofit, the analysis shows it would have experienced minor to moderate damage in plastic hinge zones of several piers. The analyses indicate the bridge would have been functional (able to carry emergency traffic) after the earthquake. The displacements from the nonlinear model are compared with linear models typically used in seismic design. The linear compression provides a good estimate of the displacement demands. |
| 总页数： | 184p |
| 报告类型： | 科技报告 |
相关文献
- Behavior and Failure Analysis of a Multiple-Frame Highway Bridge in the 1994 Northridge Earthquake
- New Design and Analysis Procedures for Intermediate Hinges in Multiple-Frame Bridges; Final rept. 1995-98
- Site Factors and Site Categories in Seismic Codes
- Critical Seismic Issues for Existing Steel Bridges
- Evaluation of Mechanized Consolidation of Bridge Deck Concrete in Illinois; Final rept. 1995-98
- THE NORTHRIDGE EARTHQUAKE: PROGRESS MADE, LESSONS LEARNED IN SEISMIC-RESISTANT BRIDGE DESIGN.
检索历史
应用推荐
