Eq case study
•Download as PPTX, PDF•
0 likes•55 views
Earthquake case study of Haiti 2010 and Chile Earthquake of 2010. Engineer perspective. civil engineer
Recommended
Recommended
More Related Content
Recently uploaded
Recently uploaded (20)
Featured
Featured (20)
Eq case study
- 3. Chile Earthquake, 2010 Date 27 February, 2010 Origin time 03:34 hrs (CLT) {12:04 hrs IST} Epicenter Santiago Magnitude 8.8 ML Focal Depth 35 km Death 533 Houses destroyed 3,70,000 Infrastructure Damages Infrastructure 221 Bridges (93 % disruption on Traffic Network) Schools 3049 Schools ( 41 %) Economic Loss 30 Billion $ (17 % of GDP)
- 4. ● The earthquake was caused by the Nazca and South American Plates converging.
- 11. Haiti ● The Republic of Haiti occupies the western third (27,750 km2 ) of the island of Hispaniola, located in the northeast Caribbean between Puerto Rico to the east and Jamaica and Cuba to the west. ● Population of approximately 99 Lakh prior to the earthquake. The metropolitan area surrounding its largest city, Port-au-Prince, has an estimated population of 30 Lakh ● Poorest Country in the Western Hemisphere. ● Haiti ranks 155 out of 163 countries when it comes to general environmental degradation.
- 12. Haiti Earthquake, 2010 Date 12 January, 2010 Origin time 16:53 hrs (EST) {02:23 hrs IST} Epicenter 18°27′25′′ N 72°31′59′′ W - 25 kilometers west of Port-au-Prince (Le´ogaˆne) Magnitude 7 ML Focal Depth 13 km Death 3,16,000 / 3,00,000 (Injured) Houses destroyed 97,294 / 1,83,383 (Damaged) Infrastructure Damages Infrastructure 60 % Schools 80 % Hospitals 50 %
- 13. ● Enriquillo-Plantain Garden Fault - blind thrust fault Oriente Fault
- 14. Building Inventory Location Building Type Urban Areas (%) Rural Areas (%) Combined (%) Combined roof and Walls 0.5 1.9 1.4 Slum housing 3.2 2.5 2.8 Rural Home with palm leaves 78.3 69.2 72.5 One Storey House 78.3 69.2 72.5 Multi Storey House/ Apartment 13.7 0.8 5.4 Table 1. Distribution of building types in urban and rural areas (IHSI 2010)
- 15. Reasons ● Lack of national experts, ● Lack of coordination in government bureaucracy, ● Urbanization, abundance of non-engineered buildings, ● Inadequate engineered buildings ● Absence of codes and standards (CUBiC - 1985)
- 16. Building Performance Turgeau hospital in downtown Port-au-Prince: (a) Before the earthquake (Simon Young Carib RM), and (b) collapsed structure after the earthquake. a b
- 18. Haitian Supreme Court destroyed by the Earthquake
- 19. buildings built on slopes totally destroyed or damaged during the quake
- 20. Non-engineered concrete block walls buildings in Port-au-Prince destroyed by the quake
- 21. Current Situation April,2020 - downtown area market, Port-au- Prince IDP Camp- Place Boyer, Haiti
- 22. Thank You
Editor's Notes
- Chile is a long, narrow country stretching along South America's western edge, placed in between south pacific and south atlantic sea. Chile is a high income and much developed state in the latin american region. Coming to the Tectonic geography, Chile is in the ring of fire area of the pacific ocean.
- Chile is largely located on the borders of the oceanic Nazca plate and the continental South American plate, in next slide I will show you that and this is a dip slip quake which up and down motion. To say something about history of EQ in Chile,.. During the twentieth century itself, Chile has been struck by twenty-eight major earthquakes, all with a force greater than 6.9 on the Richter scale. The giant 1960m which Flora has presented with a earthquake of magnitude 9.5, the largest earthquake ever recorded. An estimated 1,600 lives were lost to the 1960 earthquake and coming to the chile earthquake of 2010 it happened on...
- The difference in motion between these two plates (Nazca and Continental south american) is the driving mechanism behind earthquakes happening in this region. The two plates are converging at roughly 7 to 10 meters per century. This subduction of the Nazca plate beneath the South American plate(dip slip) is causing high stress beneath Chile, making the country highly prone to large magnitude earthquakes. The fault slip generated earthquake shaking and caused vertical and horizontal deformation of the Earth’s surface over a large area. US scientists have measured with GPS that the city of Concepcion has moved more than 3 meters to the west.
- From the chilean government, the data was provided that 0.5 % of 3 storey building failed and 2.8 % of 9 storey or higher storey buildings failed. Chile mostly followed american codes, ASCE and ACI codes. In this case, due to the lateral motion of the building which got induced by the earthquake, the bars are getting pulled and this resulted in large strains in the which led to failure. If you see closely, the bars are pushed out, buckled and fractured, this is mainly due to the fact that the earthquake lasted for 3 mins.
- 13 lakh internally displaced population, port all critical infrastructure were damaged
- Blind thrust fault they are neither easy to discern until they rupture nor to appreciate in mapping due respectively to the insufficiency of surface evidence and their low dip.
- Chile where the most intense earthquake has happened with a moment magnitude of 8.8. Moreover, no one has been killed by the 6 April 2010 Sumatra (Indonesia) earthquake which occurred with a moment magnitude of 7.8. It was the same case in many other countries such as India, Philippines, Papua New Guinea, and Indonesia etc...where have occurred earthquakes with stronger magnitudes than Haiti. So, why the 2010 Haiti earthquake was so devastating?
- Urbanization
- Non - engineered buildings - Use of heavy hollow block slabs•Inadequate detailed reinforcement in beams and columns• Bad connections (beam-column joint, column base)•Poor concrete quality
- Still the country is in the perils of the earthquake of 2010