| Autor: |
Prasad Rao, N., Balagopal, R., Rokade, R. P., Palani, G. S. |
| Zdroj: |
International Journal of Steel Structures; Oct2024, Vol. 24 Issue 5, p1154-1164, 11p |
| Abstrakt: |
Transmission line towers designed based on the provisions of different standards may fail during mandatory testing for many reasons. Two different types of premature failures observed during full-scale testing at Tower Testing and Research Station, Structural Engineering Research Centre, Chennai (CSIR-SERC), are studied in this paper. These towers failed prematurely due to improper design assumptions secondary to the primary bracing connection. The failures are modelled using general-purpose finite element software. The test and analytical results are compared with various codal provisions. Hip bracing connected to primary bracing with a single bolt acts as a hinge and fails to provide adequate restraint. The assumption that hip bracing provides restraint to the primary bracing against the in-plane deformation is invalid, and it can only prevent the primary member's displacement along the hip's axis due to its axial stiffness. This study recommends a double bolt connection for redundant members. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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