Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO, USA.
Sci Rep. 2022 Aug 18;12(1):14020. doi: 10.1038/s41598-022-18467-3.
Coastal civil infrastructure is vulnerable to the effects of climate change. Hurricane storm surge and coastal flooding can cause significant hydrostatic and hydrodynamic loads on structures while saltwater intrusion (SWI) may lead to deterioration of foundations. The effects of saltwater intrusion due to Sea Level Rise (SLR) on the foundations of buildings and other civil infrastructure is poorly understood. Such damages may not be detected in a timely fashion nor be insured, leading to significant and unanticipated expenses for building owners. In this study, we evaluate the impact of SWI due to various SLR scenarios on the corrosion of reinforcement in foundations of nearly 137,000 residential buildings in low-lying areas surrounding Mobile Bay, AL. We find that the potential for costly damage is significant. Under an extreme SLR scenario, the annual expected repair costs for the foundations of the studied homes may reach as much as US$90 million by 2100.
沿海民用基础设施易受气候变化影响。飓风风暴潮和沿海洪水会对建筑物产生巨大的静水和动水荷载，而海水入侵（SWI）可能会导致基础恶化。海平面上升（SLR）引起的海水入侵对建筑物和其他民用基础设施基础的影响还不太清楚。这些损坏可能无法及时发现，也无法投保，从而导致建筑物所有者承担重大且意外的费用。在这项研究中，我们评估了由于各种海平面上升情景而导致的海水入侵对阿拉巴马州莫比尔湾周围低洼地区近 137000 座住宅建筑物基础中钢筋腐蚀的影响。我们发现，潜在的昂贵损失是巨大的。在极端海平面上升情景下，到 2100 年，所研究房屋基础的年度预期维修费用可能高达 9000 万美元。
