Learning from Local Wisdom: Friction Damper in Traditional Building
Abstract: Indonesia is
situated in the so called “Ring of Fire” where earthquake are very frequent.
Despite of all the engineering effort, due to the March 28, 2005 strong
earthquake (8.7 on Richter scale) a lot of modern buildings in Nias collapsed,
while the traditional Northern Nias house (omohada) survived without any
damage. Undoubtedly many other traditional buildings in other area in Indonesia
have survived similar earthquake. Something in common of the traditional
building are the columns which usually are not fixed on the ground, but rest on
top of flat stones. In this paper some traditional building are subjected to non
linear time history analysis to artificial earthquake equivalent to 500 years
return period earthquake. This study shows that apparently the columns which
rest on top of flat stone acts as friction damper or base isolation. The
presence of sliding at the friction type support significantly reduces the
internal forces in the structure.
Author: Lumantarna, B.,
Pudjisuryadi, P.
Journal Code: jptsipilgg120038
