000010945 001__ 10945
000010945 005__ 20141205155819.0
000010945 04107 $$aeng
000010945 046__ $$k2008-10-12
000010945 100__ $$aMehta, Doris
000010945 24500 $$aTime Response Study of Tall Chimneys,under the Effect of Soil Structure Interaction and Long Period Earthquake Impulse.

000010945 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010945 260__ $$b
000010945 506__ $$arestricted
000010945 520__ $$2eng$$aTime period is an important means of evaluating the structural response of the structure subjected to large scale earthquake vibrations. It is necessary to study the response of tall structures like chimneys at various points rather than evaluation of the structural system on a whole. Seismic design of structures is generally carried out assuming fixed base ignoring the flexibility of soil. But, it has been observed that flexibility of soil medium below the foundation decreases the overall stiffness of the structure resulting in a subsequent increase in natural periods of the system. In the present study a chimney 215m high is studied for its earthquake response for two cases 1) considering rigid base without soil effect 2) considering the effect of subsoil in foundation. The analysis is done using Time History analysis considering Bhuj Earthquake which is a long duration earthquake impulse. The main objective in using this earthquake was, to find out the effect on structure when hit by long duration and see how the response is modified, when soil effects are taken into the consideration. The analysis and results shows that the time period increases with increases with increase in soil flexibility. It remarkably increases up to 9% for soft soil in fundamental mode and up to 80-85% for higher modes.

000010945 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010945 653__ $$aChimneys, Fundamental time period, soil structure interaction, time history analysis

000010945 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010945 720__ $$aMehta, Doris$$iGandhi, Nishant
000010945 8560_ $$ffischerc@itam.cas.cz
000010945 8564_ $$s191383$$uhttps://invenio.itam.cas.cz/record/10945/files/S10-045.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S10-045.
000010945 962__ $$r9324
000010945 980__ $$aPAPER