Seismic Vulnerability Assessment of Existing Buildings in Imphal City
Th. Kiranbala Devi1, Soibam Sandhyarani Devi2, Christina Usham3
1Dr. Th. Kiranbala Devi, Department of Civil Engineering, Manipur Institute of Technology, Manipur University, Imphal, Manipur, India.
2Soibam Sandhyarani Devi, Department of Civil Engineering, Manipur Institute of Technology, Manipur University, Imphal, Manipur, India.
3Christina Usham, Department of Civil Engineering, Manipur Institute of Technology, Manipur University, Imphal, Manipur, India.
Manuscript received on December 01, 2015. | Revised Manuscript received on December 12, 2015. | Manuscript published on December 15, 2015. | PP: 7-13 | Volume-4 Issue-1, December 2015. | Retrieval Number: A0951124115/2016©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Frequent seismic activity in various parts of India has jeopardized the existing building stock and hence necessitated their vulnerability assessment. Such assessments are helpful for the administrators to adopt appropriate measures that can reduce the loss of human lives and properties. Imphal is a growing city in the northeast part of India, which falls under zone V. Most recent construction in the city consists of poorly designed and constructed buildings. The older buildings, even constructed in compliance with relevant standards at that time, may not comply with the more stringent specifications of the latest standards. Further, with high degree of population density in the urban, 998/Km2 in Imphal West and 643/Km2 in Imphal East, while the average density of population of the state of Manipur recorded at 115/Km2 and concentration of houses and buildings in the area consisting of significant numbers of liveable and dilapidated houses (Census of India- 2011), assessment of seismic vulnerability of existing buildings is a matter of great importance. The present study deals with the seismic vulnerability assessment of the existing buildings in Imphal. A field survey of some of the existing buildings in Imphal was carried out and a preliminary assessment of seismic vulnerability was made. The Rapid Visual Screening (RVS) was done by using RVS form by Prof. Arya. One of the buildings which were found to be vulnerable from RVS was evaluated using numerical analysis, using SAP 2000 in order to assess their vulnerability for Simplified Vulnerability Assessment (SVA). The deficient members observed from the output are suggested for strengthening and retrofitting.
Keywords: Vulnerability Assessment, RVS, SVA, Modelling, SAP, Retrofitting.