原文传递
Temperature-Based Structural Identification of Long-Span Bridges
| 题名： | Temperature-Based Structural Identification of Long-Span Bridges |
| 其他题名： | Abdel-Ghaffar,A.,and Scanlan,R.(1985)."Ambient vibration studies of golden gate bridge:I.Suspended structure."J.Eng.Mech.,10.1061/(ASCE)0733-9399(1985)111:4(463),463–482. |
| 正文语种： | 英文 |
| 作者： | Matthew T. Yarnold |
| 关键词： | identification；temperature；calibration；simulation；relationship；continuity；boundary；measurement；evaluation；conditions |
| 摘要： | Temperature-based structural identification (TBSI) is a quantitative structural evaluation approach that relies on responses resulting from temperature fluctuations. Through this approach, the transfer function that defines how thermal induced strains give rise to global displacements and restrained member forces can be captured. This input-output relationship is highly sensitive to mechanisms that pose modeling challenges, such as boundary and continuity conditions, and thus is quite valuable within the model updating process. The method follows the traditional structural identification (St-Id) framework with a priori modeling, experimentation, and model calibration steps appropriately modified to allow for the measurement and simulation of temperature-induced responses. TBSI was evaluated through the use of simulations and laboratory experiments and then implemented to identify an arch bridge. In addition, a comparative study was performed with an independent evaluation of the same bridge using ambient vibration structural identification (AVSI). The results indicate that TBSI and AVSI are synergistic providing complementary information related to a diverse range of structural performances. In addition, the results illustrate several TBSI strong points, including (1) the ability to identify both linear and nonlinear behaviors, (2) the ability to efficiently capture response patterns with long periods, and (3) a strong correlation between the captured transfer function and the behavior of boundary and continuity conditions. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N11012 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001270 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 11 |
| 页码： | 118-127 |
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