000009342 001__ 9342
000009342 005__ 20141205150156.0
000009342 04107 $$aeng
000009342 046__ $$k2008-10-12
000009342 100__ $$aAdibi, Mehdi
000009342 24500 $$aSeismic Performance of Eight Elevated Water Tanks During Silakhor, Iran Earthquake of 31 March 2006

000009342 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009342 260__ $$b
000009342 506__ $$arestricted
000009342 520__ $$2eng$$aMany of elevated water tanks damaged during an earthquake occurred at 31 of March 2005 in Silakhor, Iran. In this study, the seismic performance of eight elevated water tanks have been evaluated qualitatively and .three of them have been studied analytically. Based on a detailed survey, the following modes of failure are recognized: (1) Buckling of the slender bracings due to compressional stresses, (2) Failure of the turnbuckles, (3)Brittle failure of the vertical bracings, (4) Rupture of the bottom plate of the tanks in vicinity of the joints of the supporting structure elements, (5) Formation of plastic hinge (hinges) in one of the top beams in the supporting structure, (6) Failure of joint wildings of the pipes, connected to the end of shaft, which cause the water in the tank to run off. A force-based method based on the Iranian Seismic Code (ISIR 2800) is employed to evaluate the components of three elevated tanks. A performance based design approach has been used to verify the results. A performance factor is calculated through nonlinear analyses which are related to performance based methods. The results of this study show that the force based method fail to estimate accurately the capacity of these structures including the nonlinear behavior of the elements. Nevertheless, a more convenient method for designing elevated tanks such as a performance-based seismic methodology is needed. Moreover, if the force methods are applied for designing new tanks the response modification factor (R) must be reduced from 3, according to the Iranian Seismic Code (ISIR 2800) to 2.

000009342 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009342 653__ $$aElevated Water Tanks, Seismic Performance

000009342 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009342 720__ $$aAdibi, Mehdi$$iEshghi, Sassan
000009342 8560_ $$ffischerc@itam.cas.cz
000009342 8564_ $$s544541$$uhttps://invenio.itam.cas.cz/record/9342/files/06-0140.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 06-0140.
000009342 962__ $$r9324
000009342 980__ $$aPAPER