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Mitigation Strategies for Timber Structures Prone to Wind and Flood Related Hazards
Abstract
This dissertation investigates and presents mitigation strategies to reduce the structural damage of timber building caused by hurricanes. With an increase in frequency and intensity of hurricanes, effective mitigation solutions must be considered by individuals and governments. Two potential mitigation strategies, building elevation retrofit (Thrust A) and design of façades using kerf panels (Thrust B), are investigated in this dissertation.
The building elevation method involves increasing the overall height of a structure by adding additional columns under the existing on-grade slab dwellings. However, retrofitted structure’s slab that was used a foundation may not satisfy live load conditions suggested by codes and standards, so a tensile reinforcement at the bottom of the foundation should be placed to address this issue. In Thrust A, a simplified modeling method is developed and validated to investigate response characteristics of various footprint and floor shapes when applying the building elevation method. A building-level FEA model is developed for a case model among the reviewed slab-level structures to confirm the effect of the building elevation method. Dynamic analysis using time-series loading data and progressive failure analysis that can simulate structural damage are performed using hurricane Ike load data. Loss analysis based on the HAZUS model is performed to compare the economic losses obtained from the damaged area response of non-elevated and elevated structures.
In Thrust B, kerf panels that have high flexibility, and greater relief from external loads can be expected than existing conventional panels, were investigated as a design paradigm for façades. A parametric analysis model is created for the initial curvature of the panel and various types of unit cell arrays using computational method to examine the response under wind load conditions.
Subject
Hurricane mitigation strategyWood framing residential building
FEA model
Progressive failure analysis
Loss analysis
Kerf panel
wind load
flood load
Citation
Yoo, Yong (2023). Mitigation Strategies for Timber Structures Prone to Wind and Flood Related Hazards. Doctoral dissertation, Texas A&M University. Available electronically from https : / /hdl .handle .net /1969 .1 /199087.