Engineering seismic evaluation report of the Israel Electric Company
... The main results of the evaluation of the building for Israeli design quake of 475 years are: 1. According to the evaluation results of the spectral model analysis (linear), the structure is expected to stand the predicted loads (earthquakes during recurrence period of 475 years, LS criterion - life ...
... The main results of the evaluation of the building for Israeli design quake of 475 years are: 1. According to the evaluation results of the spectral model analysis (linear), the structure is expected to stand the predicted loads (earthquakes during recurrence period of 475 years, LS criterion - life ...
Methodology for Assessing the Seismic Efficiency of Friction Dissipators Chapter 6
... In this section some preliminary calculations are presented. Figs. 6.1, 6.2 and 6.3 contain plots of the four performance indices above defined versus the sliding loads µ i Ni in the dissipators. Figs. 6.1 and 6.2 correspond to single-story buildings while Fig. 6.3 deals with the three-story benchma ...
... In this section some preliminary calculations are presented. Figs. 6.1, 6.2 and 6.3 contain plots of the four performance indices above defined versus the sliding loads µ i Ni in the dissipators. Figs. 6.1 and 6.2 correspond to single-story buildings while Fig. 6.3 deals with the three-story benchma ...
Behavior of Seismically Isolated Buildings during the 2016
... isolated building. During the Kumamoto earthquakes, some of the joints showed greater deformation than expected, but there were no problems in terms of use. Compared to when seismically isolated structures first started to be employed in buildings, the gap covers installed near building entrances ha ...
... isolated building. During the Kumamoto earthquakes, some of the joints showed greater deformation than expected, but there were no problems in terms of use. Compared to when seismically isolated structures first started to be employed in buildings, the gap covers installed near building entrances ha ...
5 pt 1 pt
... The place between the crust and the mantle that causes seismic waves to increase in ...
... The place between the crust and the mantle that causes seismic waves to increase in ...
P wave animation text
... off the Earth’s surface between the epicenter and the recording seismometer. PP waves can be seen at recording seismometers any distance from the epicenter. Again, it is a simple P w ave that is reflected off the surface of the earth at the angle that it arrived. These also arrive in the PKP describ ...
... off the Earth’s surface between the epicenter and the recording seismometer. PP waves can be seen at recording seismometers any distance from the epicenter. Again, it is a simple P w ave that is reflected off the surface of the earth at the angle that it arrived. These also arrive in the PKP describ ...
S05_4359_L04
... Tectonic earthquakes are initiated on faults. The EQ hypocenter or focus is the point or zone where a rupture initiates and offset is greatest, usually below the surface. The point on Earth's surface directly above the hypocenter is the epicenter. The amount of offset that occurs across a fault duri ...
... Tectonic earthquakes are initiated on faults. The EQ hypocenter or focus is the point or zone where a rupture initiates and offset is greatest, usually below the surface. The point on Earth's surface directly above the hypocenter is the epicenter. The amount of offset that occurs across a fault duri ...
Seismic hazard for some regions of the world examined using strain
... zone. The cell is extended up to the mountains of Caucasus as well. The quantity DT is 22.2 and as we can see in Figure 2 (CELL 2), there is a continuous accumulation of the strain energy since 1992, in the area. So we can assume that an active seismic period should be expected until the year 2014, ...
... zone. The cell is extended up to the mountains of Caucasus as well. The quantity DT is 22.2 and as we can see in Figure 2 (CELL 2), there is a continuous accumulation of the strain energy since 1992, in the area. So we can assume that an active seismic period should be expected until the year 2014, ...
Seismic performance of double-unit tunnel form building
... commonly constructed in severe and low seismic countries such as Japan, Chile, Italy, Iran, Turkey, Malaysia and others countries. Walls in tunnel form buildings have two functions: resisting lateral loads as well as carrying vertical loads [1]. The walls also can provide higher lateral stiffness an ...
... commonly constructed in severe and low seismic countries such as Japan, Chile, Italy, Iran, Turkey, Malaysia and others countries. Walls in tunnel form buildings have two functions: resisting lateral loads as well as carrying vertical loads [1]. The walls also can provide higher lateral stiffness an ...
Lateral Load Analysis of Shear Wall Framed Multistory
... response of buildings. Structural design of buildings for seismic loading is primarily concerned with structural safety during major Earthquakes, in tall buildings, it is very important to ensure adequate lateral stiffness to resist lateral load. The provision of shear wall in building to achieve ri ...
... response of buildings. Structural design of buildings for seismic loading is primarily concerned with structural safety during major Earthquakes, in tall buildings, it is very important to ensure adequate lateral stiffness to resist lateral load. The provision of shear wall in building to achieve ri ...
What controls the spatial distribution of remote aftershocks?
... Earthquake interaction: The Coulomb Failure Function The area affected by the stress perturbation scales with the ...
... Earthquake interaction: The Coulomb Failure Function The area affected by the stress perturbation scales with the ...
Pioneering geologist Kerry Sieh awarded top honor in seismology
... methods and types of observations that are still in use today in the analysis of paleoevents along strike-slip faults. Sieh’s study at Pallett Creek revealed earthquakes were more frequent than most expected and did not recur as regularly as hoped. This study represented the first time paleo-earthqu ...
... methods and types of observations that are still in use today in the analysis of paleoevents along strike-slip faults. Sieh’s study at Pallett Creek revealed earthquakes were more frequent than most expected and did not recur as regularly as hoped. This study represented the first time paleo-earthqu ...
Reservoir imaging using low frequencies of seismic reflections
... hydrocarbon-rich zones of the reservoir were localized using low-frequency analysis. These zones were confirmed a posteriori by well-production data. The imaging analysis was performed without well data. Note that conventional methods of data processing could not detect the hydrocarbon zones. The fi ...
... hydrocarbon-rich zones of the reservoir were localized using low-frequency analysis. These zones were confirmed a posteriori by well-production data. The imaging analysis was performed without well data. Note that conventional methods of data processing could not detect the hydrocarbon zones. The fi ...
types of sesmic waves 4.96MB 2017-03-29 12
... • P waves can travel through any type of material. • In air, these pressure waves take the form of sound waves. • They travel at are 330 m/s in air, 1450 m/s in water and about 5000 m/s in granite. (m/s = meters per second.) ...
... • P waves can travel through any type of material. • In air, these pressure waves take the form of sound waves. • They travel at are 330 m/s in air, 1450 m/s in water and about 5000 m/s in granite. (m/s = meters per second.) ...
Analysis of Various Thicknesses of Shear Wall with
... side-sway. When shear walls are stiff enough, they will prevent floor and roof framing members from moving off their supports. Also, buildings that are s ufficiently stiff will usually suffer less non-structural damage. When shear walls are strong enough, then capable of transferring lateral forces ...
... side-sway. When shear walls are stiff enough, they will prevent floor and roof framing members from moving off their supports. Also, buildings that are s ufficiently stiff will usually suffer less non-structural damage. When shear walls are strong enough, then capable of transferring lateral forces ...
Lab 6 Lecture
... Well-built structures slightly damaged, poorly-built structures suffer major damage ...
... Well-built structures slightly damaged, poorly-built structures suffer major damage ...
Strike-Slip Fault
... **This is the most used scale today** -Introduced in 1979 in order to be more accurate than the Richter and Mercalli Scales, because its based on physical features of the quake instead of recordings using instruments. -Measures earthquake strength based on the amount of energy released. This amount ...
... **This is the most used scale today** -Introduced in 1979 in order to be more accurate than the Richter and Mercalli Scales, because its based on physical features of the quake instead of recordings using instruments. -Measures earthquake strength based on the amount of energy released. This amount ...
Earth Science Regents
... !"“P”-waves or longitudinal waves: “P” stands for primary. These waves travel fastest and arrive at seismographs first. They are compressional (“push-pull”) waves. !"“S”-waves or transverse waves: “S” stands for secondary. These waves travel more slowly and arrive at seismographs after P-waves. They ...
... !"“P”-waves or longitudinal waves: “P” stands for primary. These waves travel fastest and arrive at seismographs first. They are compressional (“push-pull”) waves. !"“S”-waves or transverse waves: “S” stands for secondary. These waves travel more slowly and arrive at seismographs after P-waves. They ...
Response of multiple horizontal soil layers using higher
... be assembled. In the solution process it is necessary to multiply the Frequency Response matrix by the Fourier transform of the excitation. Then, calculating the inverse transform of the first, second and third order solution, taking the diagonal of the second and third order case, the solution in t ...
... be assembled. In the solution process it is necessary to multiply the Frequency Response matrix by the Fourier transform of the excitation. Then, calculating the inverse transform of the first, second and third order solution, taking the diagonal of the second and third order case, the solution in t ...
Seismic retrofit
Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. With better understanding of seismic demand on structures and with our recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged. Prior to the introduction of modern seismic codes in the late 1960s for developed countries (US, Japan etc.) and late 1970s for many other parts of the world (Turkey, China etc.), many structures were designed without adequate detailing and reinforcement for seismic protection. In view of the imminent problem, various research work has been carried out. State-of-the-art technical guidelines for seismic assessment, retrofit and rehabilitation have been published around the world - such as the ASCE-SEI 41 and the New Zealand Society for Earthquake Engineering (NZSEE)'s guidelines. These codes must be regularly updated; the 1994 Northridge earthquake brought to light the brittleness of welded steel frames, for example.The retrofit techniques outlined here are also applicable for other natural hazards such as tropical cyclones, tornadoes, and severe winds from thunderstorms. Whilst current practice of seismic retrofitting is predominantly concerned with structural improvements to reduce the seismic hazard of using the structures, it is similarly essential to reduce the hazards and losses from non-structural elements. It is also important to keep in mind that there is no such thing as an earthquake-proof structure, although seismic performance can be greatly enhanced through proper initial design or subsequent modifications.