Preliminary Observations by Montalva and Cerda at Universidad de Concepción
Although the 8.2 Mw that struck Iquique this past April 1st was less energetic than the 2010 Maule EQ, the available records show the same surface intensity demand for similar site conditions. The geotechnical and structural damage is much less than the one registered in 2010, the reason will probably be attributed to better site […]
Effect of 8.2 Mw Iquique Earthquake on Tall Buildings
An 8.2 Mw Earthquake struck the Chilean coast on April 1st. The epicenter was located 95km NW of Iquique. There are many 20+ story buildings in the affected area with similar characteristics than those affected in the last February 27th 2010 Maule’s earthquake, such as a high shear wall density and 20cm thick walls with none […]
Minor structural damage – RC Buildings
The Chilean building code has been improved every time an earthquake has occurred. Even though the implementation of the construction standards are severe and consequently expensive, when evaluating the damage after the last events, it has proved to be efficient for a country highly susceptible to earthquakes. According to the UN News Centre the UN Office for Disaster […]
Preliminary Assessment of Structural Performance – RC Buildings
Compared to the 8.8M earthquake in 2010, the 8.3M earthquake did not caused important structural damage on reinforced concrete buildings (RCB). However, two more facts helped to reduce the effects of the recent event: the affected area is less densely populated and the energy released was a third of the 2010 earthquake, as explained in an article by Pascale Bonnefoy and Patrick J. […]
World Housing Encyclopedia Reports for Chile
The WHE Report Database contains 130 reports on housing construction types in 43 seismically active countries contributed by volunteers. Each housing report is a detailed description of a housing type in a particular country. The description is prepared from a number of standard closed-ended questions and some narrative that have been provided by report authors. Each report […]
Illapel Earthquake: Housing
Figure 1. Reinforced concrete building structures presenting substantial damage in the nonstructural components of the first and second floors owing to the tsunami. Coquimbo. The dwellings in the affected area are mainly masonry structures (of one or two storeys), and the remaining dwellings are reinforced concrete structures, adobe structures and wood structures. Masonry structures […]
Acceleration records and Spectra from Ruben Boroschek
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Ericson Encina Zuniga, PhD Student at University of Auckland, New Zealand.
Strong Motion Records Analysis By Ruben Boroschek, University of Chile
Read the Report: Download the Strong Motion Records Analysis Preliminary Report By Ruben Boroschek, University of Chile (0.56 MB PDF) Ericson Encina Zuniga, PhD Student at University of Auckland, New Zealand.
State of Dams and Levees
The GDACS Earthquake Impact report lists only one dam, the Cogoti dam, as at risk. The Cogoti dam is 92 km from the earthquake epicenter. Peak acceleration contour maps from the USGS following the earthquake suggest a peak ground acceleration between 0.2 and 0.3 g at the Cogoti Dam (approximately located at the red dot). Figure […]
Initial Cost Estimates
“Fifty-eight people were reported killed and more than 900 were injured in the quakes. The Japan Fire and Disaster Management Agency estimated that more than 3,900 residences and 120 nonresidential buildings were damaged or destroyed. The quakes damaged highways, rail lines, bridges and other infrastructure, causing short-term disruption of airline and train service. There also were “significant” supply […]