000019163 001__ 19163
000019163 005__ 20170118182302.0
000019163 04107 $$aeng
000019163 046__ $$k2017-01-09
000019163 100__ $$aWelsh-Huggins, Sarah
000019163 24500 $$aSeismic Vulnerability of Reinforced Concrete Hillside Buildings in Northeast India

000019163 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019163 260__ $$b
000019163 506__ $$arestricted
000019163 520__ $$2eng$$aIn northeast India, rapid urbanization and limited available land has led to the construction of multi-story, reinforced concrete frames with masonry infill walls on steep hillsides of weak soils. Recent earthquakes in neighboring regions suggest that these buildings may be highly vulnerable to earthquake damage. This paper analyzes the seismic performance of archetypical hillside, reinforced concrete buildings with stepped foundations in Aizawl, Mizoram using incremental dynamic analysis, quantifying collapse risk and identifying potential failure mechanisms. The results show that shear critical columns exacerbate structural vulnerabilities created by stepped hillside configurations. In an earthquake, structural failure likely will begin with axial failure of the half-length base columns at the top of the slope, followed by sequential failures in downslope columns. Collapse is predicted to occur from exceedance of column shear capacity in the stories on stepped foundations. Sensitivity studies of alternative structural and material configurations confirm that current practice of increasing column dimensions at downslope column lines improves lateral strength, relative to uniform column configurations. In addition, utilizing larger transverse reinforcing bars changes column failure mechanisms and increases collapse margin for the expected seismic hazard. The findings demonstrate that improved column shear capacity and abovecode detailing may mitigate the seismic vulnerability of Aizawl’s hillside reinforced concrete buildings.

000019163 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019163 653__ $$ahillside buildings; stepped foundation; reinforced concrete frames; collapse risk

000019163 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019163 720__ $$aWelsh-Huggins, Sarah$$iRodgers, Janise$$iHolmes, William$$iLiel, Abbie
000019163 8560_ $$ffischerc@itam.cas.cz
000019163 8564_ $$s821401$$uhttps://invenio.itam.cas.cz/record/19163/files/2998.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2998.
000019163 962__ $$r16048
000019163 980__ $$aPAPER