原文传递
Effect of Vertical Acceleration on Shear Strength of Reinforced Concrete Columns.
| 题名： | Effect of Vertical Acceleration on Shear Strength of Reinforced Concrete Columns. |
| 作者： | Lee, H.; Mosalam, K. M. |
| 关键词： | Bridge Design; Bridge Inspections; Columns(bridge); Concrete; Dynamic Response; Failure Mode Analysis; Highway Bridges; Modeling; Peer Reviews; Physical Evidence; Reinforced Concrete; Reinforcement(st |
| 摘要： | This report provides both experimental and computational results, which confirm that vertical acceleration can induce shear strength degradation of RC columns. Dynamic tests of two reduced geometrical scale specimens were conducted on the University of California, Berkeley shaking table at Richmond Field Station. The two specimens had different transverse reinforcement ratio. As a result of an analytical investigation and preliminary fidelity tests, the 1994 Northridge earthquake acceleration recorded at the Pacoima Dam was selected as an input motion among the 3551 earthquake acceleration records in the PEER NGA database. The chosen ground motion was applied to the test specimens at various levels ranging from 5% to 125%. The specimens were subjected to combinations of vertical component and the larger of the two horizontal components of the selected ground motion record. For the 125%-scale, not only was the combined vertical and horizontal motion applied but also a single horizontal component was considered for direct evaluation of the effect of the vertical excitation. |
| 报告类型： | 科技报告 |
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