التفاصيل البيبلوغرافية
| العنوان: |
Seismic analysis of dam-foundation-reservoir system including the effects of foundation mass and radiation damping. |
| المؤلفون: |
Mohammadnezhad, Hamid, Ghaemian, Mohsen, Noorzad, Ali |
| المصدر: |
Earthquake Engineering & Engineering Vibration; Jan2019, Vol. 18 Issue 1, p203-218, 16p |
| مصطلحات موضوعية: |
EARTHQUAKES, SEISMIC response, RADIATION damping, FINITE element method, THEORY of wave motion |
| مستخلص: |
One of the main concerns in using commercial software for finite element analyses of dam-foundation-reservoir systems is that the simplifying assumptions of the massless foundation are unreliable. In this study, an appropriate direct finite element method is introduced for simulating the mass, radiation damping and wave propagation effect in foundations of dam-foundation-reservoir systems using commercial software ABAQUS. The free-field boundary condition is used for modeling the semi-infinite foundation and radiation damping, which is not a built-in boundary condition in most of the available commercial software for finite element analysis of structures such as ANSYS or ABAQUS and thus needs to be implemented differently. The different mechanism for modeling of the foundation, earthquake input and far-field boundary condition is described. Implementation of the free-field boundary condition in finite element software is verified by comparing it with analytical results. To investigation the feasibility of the proposed method in dam-foundation-reservoir system analysis, a series of analyses is accomplished in a variety of cases and the obtained results are compared with the substructure method by using the EAGD-84 program. Finally, the massed and massless foundation results are compared and it is concluded that the massless foundation approach leads to the overestimation of the displacements and stresses within the dam body. [ABSTRACT FROM AUTHOR] |
|
Copyright of Earthquake Engineering & Engineering Vibration is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Find this article in full text from Springer Verlag. 
Full Text Finder