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Learning From Earthquakes
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Resource Category: Geotechnical Structures (Dams and levees, etc.)

Photos taken in and round Port-au-Prince

                               Figure 1. Collapsed canopy at gas station. No anchorage at base of posts.   Figure 2. Lateral spreading at port.               Figure 3.Overview of collapsed pier and cranes at port. Several buildings also under […]

Photos of Geotechnical Observations

      Figure 1. Buckels steps.   Figure 2. Lateral spread. Exisitng utility trench is a zone of weakness.                       Figure 3. Liquefaction. Sand ejecta and buckled pavement bricks.   Figure 4. Photo of buckled light rail line.             […]

Observations from the EERI Team

  Figure 1. Pyne Gould collapsed. Figure 2. Structural failure in columns.           Day 1: After Triage and Observations Today I helped with the triage of buildings in the North-East Quadrant of the CBD (approximately 20+ blocks).  The goal was to identify any buildings where there may still be people trapped […]

Observations of Retaining Walls from the EERI Team

Retaining walls in residential areas generally ranged from 1 to 4 meters high.  Wall types observed included: gravity rock and masonry walls, gabion walls, masonry walls with ground anchors, concrete crib walls, timber crib walls, and timber pile walls. Example photos are shown in Figures 1, 2, 3, 4, 5, and 6. Wall performance ranged […]

GEER Reconnaissance Reports

Read the Reports: April 5, 2011: Geotechnical Quick Report on the Kanto Plain Region during the March 11, 2011, Off Pacific Coast of Tohoku Earthquake, Japan (6.1 MB PDF) May 2, 2011: Preliminary Observations of Levee Performance and Damage following the March 11, 2011 Tohoku Offshore Earthquake, Japan (2.6 MB PDF) May 17, 2011: Preliminary Observations of the Effects […]