سال انتشار: ۱۳۸۶

محل انتشار: پنجمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله

تعداد صفحات: ۶

نویسنده(ها):

Eduardo Botero Jaramillo – Post doctoral fellow, Departamento de Geotecnia. Instituto de ingeniería, Universidad Nacional Autónoma de México, C.P. 04510
Bogart C. Méndez U – PhD students, Departamento de Geotecnia. Instituto de ingeniería, Universidad Nacional Autónoma de México, C.P. 04510
Juliana C. Zapata – PhD students, Departamento de Geotecnia. Instituto de ingeniería, Universidad Nacional Autónoma de México, C.P. 04510
Miguel P. Romo O – Head researcher, Departamento de Geotecnia. Instituto de ingeniería, Universidad Nacional Autónoma de México, C.P. 04510

چکیده:

In civil engineering, studying the interaction between two sliding rigid-bodies can lead to gain insight into the behavior of the discontinuities of certain types of structures (for example cracked concrete dams or friction base isolated structures) when they have endured dynamic loading in several occasions. This paper presents the results of a research performed on the time variation of the frictional characteristics of a concrete-concrete sliding interface. The dependency of the static and dynamic friction coefficients on the number of dynamic loading-cycles was evaluated. To this end, two concrete blocks were subjected to 18,000 sliding cycles in a shaking table. The test results show a strong dependency of both static and dynamic friction coefficient on the interface changes due to wear on the contact surfaces.