Authors:

Jingqing Liu

Date Created:

Not specified

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About Paper:

When embankments and earth dams are subjected to seismic loadings, lateral and longitudinal deformations, crest settlement, transverse and longitudinal cracking, and liquefaction may occur. Earthquake-induced cracks are considered one of the most hazardous consequences of seismic damage because they can lead to increased seepage through the dam and internal erosion, which may result in failure of the dam and catastrophic release of the water in the reservoir. The consequences can be devastating, as seen with the failure of the Nova Kakhovka dam in southern Ukraine. This research project aims to improve the seismic design of embankments and earth dams by creating a new, updated database of earthquake-induced deformations of earth dams, which will provide a tool for practitioners to predict the extent and depth of seismic cracking. Data on earthquakes, dams, and seismically-induced damages from the period of 2000 to 2023 was gathered from the technical literature, which included conference publications, journal papers and technical reports. My contribution to the research focused on the reports of damage to over 250 dams in China during the 2008 Wenchuan earthquake. The modernized database, containing several hundred dam cases, will be used to develop new empirical methods for evaluating earthquake-induced cracking. Creation of such database will be crucial to the safety of embankments and earth dams since it will provide high-quality data to estimate seismically-induced cracks in dams and to improve the seismic resilience of embankments and dams.

Source:

Purdue University / 2023

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Co-authors:

Jingqing Liu