Earthquake engineering

Many fatal earthquakes happen annually, but none as strange and horrific as the events before and during the tsunami that occurred on March 11, 2011 in Japan. An earthquake is a release of stress that is located in the earth’s interior. The earthquake is activated when there is a quick movement over a fault causing the tectonic plates to shift (Rothery, D, 1997, p.31, 33, 42, 44). The very strange events occurring in Japan included strange animal behavior recorded, many beaching incidents in and…

Tsunamis can form in a variety of ways; they are produced by earthquakes, landslides, volcanoes, and other seismic disturbances of the sea floor. In the deep open ocean, tsunami waves are usually less than 1 meter and are hardly noticeable. However, they are much longer and travel much faster than ordinary wind waves. They can have wavelengths of 240 kilometers and travel at over 700 kilometers per hour. As tsunami waves approach the shore, shoaling occurs and the waves become dangerous.…

magnitude 9.0 earthquake and tsunami with waves peaking at 17 meters hit Japan on March 11, 2011. Three of the reactors at Fukushima overheated because the cooling systems failed after a tsunami flooded the power station and disabled the reactor cooling system which causing core meltdowns and make reactors impossible to restart . This was compounded by hydrogen gas explosions and released large amounts of radioactive material into the air, and the releases continue to this day. The accident…

One In the magazine “ The Next Big One”, by Joel Achenbach gives details about an earthquake that had happened in the past and it was really bad. The name of the fault of the type of earthquake movement was The Hayward Fault. A long and lethal crack in the earth, slices along the base of the Berkeley Hills and directly through the University of California. Now… Joel Achenbach quotes that “ We understood earthquakes better than we did a century ago, when San Francisco was flattened. Now we…

Overview A 9.0 magnitude earthquake began on March 11th, 2011 at 2:46 PM and lasted 3 minutes (World Nuclear Association, 2016). The earthquake was centered 130 km off the shore of Sendai Myagi on the east coast of Honshu Island. Consequentially, the island to move four meters to the east and surrounding coastlines were subsided by up to one meter. The earthquake also created a tsunami reaching as high as 40 meters. At the time of the earthquake, there were 11 nuclear reactors operating in the…

I propose that my group builds an earthquake-safe structure in Chile. If you look at the history of earthquakes in Chile you may notice that there are several 7.0+ magnitude quakes. This is including one with a magnitude of 9.5 on May 22, 1960, this earthquake holds the record for the worst magnitude earthquake in the history of the world. With this type history, an earthquake safe structure would be a welcome thing in Chile. As Chileans build homes and buildings they often use shoddy materials,…

Earthquakes can be destructive, by destroying houses, killing citizens, and tearing families farther apart. In the Philippines, the 7.2 magnitude earthquake did just this. There were 3,512,281 people affected by this massive earthquake. The disaster happened in 2013, leaving 36,645 houses damaged in the rubble. Most People respond to a natural disaster by gathering materials, spreading the word, and receiving government aid. People respond to a natural disaster by Gathering Resources. After the…

about would-around earthquakes. It seems that structural engineers could not avoid the fact that seismic analysis has become much more significant. Earthquake will result in severe consequences such as large financial losses and companies bankrupt, people unemployed and even fatalities. Although earthquakes are not usual natural catastrophes, it is necessary to rationally analyze seismic risk on different kinds of fields like geology, earthquake monitoring and civil engineering. A recent…

forever. The Northridge earthquake, although given the name of Northridge, was centered in the San Fernando Valley. The earthquake, which happened at 4:31 a.m, had a magnitude of 6.7 and it was felt in places such as Baja California and Las Vegas. This earthquake made tremendous damage and was one of the costliest natural disasters of its time, costing the state $40 million in damage. The earthquake, although considered moderate, caused much more damage than other earthquakes with stronger…

Secondly, conditions of the structures should be taken into consider. These conditions are from the load and the usage of the structures. For rion antirion bridge, structure load, ship impact, earthquake event and tectonic are taken into account. These different conditions will be summarized to the load that act on the foundation. Thirdly, according to the environment conditions and load, several possible solutions should be investigated and the…