The 2018 M_w 7.1 Anchorage, Alaska, earthquake is one of the largest earthquakes to strike near a major US city since the 1994 Northridge earthquake. The significance of this event motivated reconnaissance efforts to thoroughly document damage to the built environment. This article presents the spatial variability of ground motion intensity and its correlation with subsurface conditions in Anchorage, the identification of liquefaction triggering in the absence of surficial manifestations (such as sand boils or sediment ejecta), cyclic softening failure in organic soils, and the poor performance of anthropogenic fills subjected to cyclic loading. In addition to lessons from observed ground deformation and geotechnical effects on structures, this article provides case studies documenting the satisfactory behavior of improved ground subjected to cyclic loading and the appropriateness of current design procedures for the estimation of seismically induced sliding displacements of mechanically stabilized earth walls.

2018 M _W7.1阿拉斯加安克雷奇地震是自1994年诺斯里奇地震以来美国主要城市附近发生的最大地震之一。此事件的重要性促使侦察工作彻底记录对建筑环境的破坏。本文介绍了锚固中地面运动强度的空间变异性及其与地下条件的相关性，在没有表面表现（如砂ils或沉积物喷射）的情况下识别液化触发，有机土壤的周期性软化破坏以及贫瘠的土壤。循环荷载下人为填充物的性能。除了从观察到的地面变形和岩土对结构的影响中汲取的教训外，