Component-Based Vulnerability Analysis for Residential Structures Subjected to Storm Surge Impact from Hurricane Sandy

AbstractIn this study, manual and light detection and ranging (LiDAR) surveys of physical damage to structures in Ortley Beach, New Jersey, following Hurricane Sandy are used to assess the vulnerability of residential structures to storm surge. First, using photographs from the manual survey, the performance of building components prone to surge damage (foundations, exterior walls, and wall siding) is assessed according to failure mechanism, construction type, and material. General observations include widespread failure of closed foundations, significant vulnerability of exterior walls to surge loads and waterborne debris impact, and the extensive loss of vinyl lap siding. The effect of the built environment is also investigated, revealing that the study area consists of two regions: one heavily damaged due to the failure of coastal dunes and another partially protected by large oceanfront structures acting as artificial breakwaters. The performance of individual structures is likewise found to strongly ...

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