Subsidence Induced Damage Assessment of Buildings in Joshimath
摘要
The elimination of surplus pore water pressure and the compaction of soil mass under prolonged loading which can be caused by either natural or man-made processes cause land subsidence. Detrimental consequences of this phenomena include altered land surface morphology, earth fissure formation and structural and non-structural detriment to subsurface and surface infrastructures. Joshimath town suffered severe ground subsidence, which severely damaged infrastructure. Using a variety of characteristics, including typology, number of stories, size, construction materials and configuration, this article assesses the vulnerability of buildings. Siting concerns, soil and foundation conditions, architectural characteristics, structural aspects and components are some of the main damage attributes taken into consideration. Crack meters were installed to monitor the crack progression in the buildings. The assessment of 2364 surveyed buildings revealed the damaged grades as-usable: 37%, Further Assessment: 42%, Unusable: 20%, To be Demolished: 1%. This analysis illustrates thorough methodology for vulnerability assessment in order to properly address structural safety and direct restoration activities.