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Building Resilience: Expanding the Concept of
... Despite its location on the East Coast, the University of Massachusetts Integrated Design Building was governed by seismic as opposed to wind loads—and the aspect of the project that best illustrates resilience is its innovative seismic design. Comprised of an exposed heavy timber structural system ...
... Despite its location on the East Coast, the University of Massachusetts Integrated Design Building was governed by seismic as opposed to wind loads—and the aspect of the project that best illustrates resilience is its innovative seismic design. Comprised of an exposed heavy timber structural system ...
Comparison of Eigenpatterns 1,2 for 0 (Top) with Eigenpatterns 1,2
... well as the details of the nonlinear threshold process Meanfield threshold systems appear to have locally ergodic behavior Space-time patterns of observable failures (earthquakes) can be used to understand many facets of the underlying, unobservable dynamics (physical state variables) ...
... well as the details of the nonlinear threshold process Meanfield threshold systems appear to have locally ergodic behavior Space-time patterns of observable failures (earthquakes) can be used to understand many facets of the underlying, unobservable dynamics (physical state variables) ...
Seismology: The hunt for plumes
... 6XUIDFHZDYH 7RPRJUDSK\ – Tomographic methods can also be applied to VXUIDFH ZDYHV, lowfrequency seismic waves that propagate in the crust and upper mantle and owe their existence to the presence of the free surface. The depths to which surface waves are sensitive depends on frequency, with low-fr ...
... 6XUIDFHZDYH 7RPRJUDSK\ – Tomographic methods can also be applied to VXUIDFH ZDYHV, lowfrequency seismic waves that propagate in the crust and upper mantle and owe their existence to the presence of the free surface. The depths to which surface waves are sensitive depends on frequency, with low-fr ...
Lifting earthquake-affected buildings in Christchurch
... to see if there are any particular concerns that need to be accounted for. ...
... to see if there are any particular concerns that need to be accounted for. ...
Revelation of 5.12 Quake, Sichuan, ChinaPart I Background of
... Most earthquakes are followed by many aftershocks, some of which may be as strong as the main shock itself. Many fatalities and serious injuries occurred from a strong aftershock that followed 2 days after the September 19, 1985, Mexico City earthquake that killed an estimated 10,000 people (45). In ...
... Most earthquakes are followed by many aftershocks, some of which may be as strong as the main shock itself. Many fatalities and serious injuries occurred from a strong aftershock that followed 2 days after the September 19, 1985, Mexico City earthquake that killed an estimated 10,000 people (45). In ...
Seismic Waves
... • Push and pull rock creating a back-andforth motion in the direction the wave is moving • (known as longitudinal or compressional waves) ...
... • Push and pull rock creating a back-andforth motion in the direction the wave is moving • (known as longitudinal or compressional waves) ...
chapter 5 intervention strategies
... designing on purpose of fulfilling safety demands under well-defined loading cases. In addition, interpretation of the actual structural performance is expected to be based on existing damage, the full record of which is non achievable. Completion of the detailed site inspection, which begun in the ...
... designing on purpose of fulfilling safety demands under well-defined loading cases. In addition, interpretation of the actual structural performance is expected to be based on existing damage, the full record of which is non achievable. Completion of the detailed site inspection, which begun in the ...
evaluation of the seismic performance of gravity type quay wall
... deposit below the wall). For simplicity, the geotechnical conditions of the soil deposits below and behind the wall were assumed to be the same with each other, represented by equivalent SPT N-value (SPT N-value corrected for the effective vertical stress of 65 kPa). The equivalent SPT N-value has b ...
... deposit below the wall). For simplicity, the geotechnical conditions of the soil deposits below and behind the wall were assumed to be the same with each other, represented by equivalent SPT N-value (SPT N-value corrected for the effective vertical stress of 65 kPa). The equivalent SPT N-value has b ...
CVEEN 6330 Homework Assignment 4 1. Determine the wave
... b. use the information to calculate the average Poisson’s ratio for the earth’s crust. c. use the information and calculations in a and b and Figure 5.9 in Lecture 4b to calculate the Rayleigh wave arrival time. d. compare this calculation with the actual earthquake record. Does the calculation agre ...
... b. use the information to calculate the average Poisson’s ratio for the earth’s crust. c. use the information and calculations in a and b and Figure 5.9 in Lecture 4b to calculate the Rayleigh wave arrival time. d. compare this calculation with the actual earthquake record. Does the calculation agre ...
Automated seismic event location combining waveform
... Microseismic monitoring became a common operation in many applications, including monitoring of volcanic areas and underground industrial operations (i.e. induced seismicity). The analysis of microseismicity is challenging, because of the large number of recorded events often characterized by low si ...
... Microseismic monitoring became a common operation in many applications, including monitoring of volcanic areas and underground industrial operations (i.e. induced seismicity). The analysis of microseismicity is challenging, because of the large number of recorded events often characterized by low si ...
Neotectonics guide - San Francisco State University
... Surface-Wave Magnitude (Ms) Peak wave amplitude is measured for surface (Rayleigh) waves with periods of 20s from long period seismographs at teleseismic distances. Does not require a seismograph record within 100km. Can measure up to 7.3 accurately. Magnitude used in empirical comparisons of magnit ...
... Surface-Wave Magnitude (Ms) Peak wave amplitude is measured for surface (Rayleigh) waves with periods of 20s from long period seismographs at teleseismic distances. Does not require a seismograph record within 100km. Can measure up to 7.3 accurately. Magnitude used in empirical comparisons of magnit ...
1.2.3 Steel Angle: A steel angle is long steel with
... Flats are actually thin strips of mild steel having the thickness of the strip commonly varying from 12mm to 10mm but thicker flats than this are also available. Steel flats are produced by the utilization of relatively smooth, cylindrical rolls on rolling mills. Generally the width to thickness rat ...
... Flats are actually thin strips of mild steel having the thickness of the strip commonly varying from 12mm to 10mm but thicker flats than this are also available. Steel flats are produced by the utilization of relatively smooth, cylindrical rolls on rolling mills. Generally the width to thickness rat ...
Effect of Diaphragm Discontinuity on Seismic Response
... irregularities and slab discontinuities were mentioned. In the building models formed for different positions and ratios of the gaps, the results of the analysis made by keeping in mind the effects of the number of storey, beam continuity, earthquake zone, soil type and rigid diaphragm work on the s ...
... irregularities and slab discontinuities were mentioned. In the building models formed for different positions and ratios of the gaps, the results of the analysis made by keeping in mind the effects of the number of storey, beam continuity, earthquake zone, soil type and rigid diaphragm work on the s ...
Document
... environment. Often labeled as “big-box” buildings, these structures are the mainstay for retail, storage and distribution facilities for North America’s largest companies. These buildings are favored by developers and owners for providing the most cost effective approach to enclosing large floor spa ...
... environment. Often labeled as “big-box” buildings, these structures are the mainstay for retail, storage and distribution facilities for North America’s largest companies. These buildings are favored by developers and owners for providing the most cost effective approach to enclosing large floor spa ...
... response curve becomes almost linear because from floor 4 onwards the building has similar floors. Effectiveness of dual system in controlling lateral drift is quiet obvious compared to frame structure (Fig. 3). Base shear forces are plotted in Fig 3 and is interesting to see that case 1c has lesser ...
Chapter 9: Earthquakes
... 3. Shear: forces that causes slipping a) causes rocks on either side of a fault to move past each other C. Types of Faults 1. Normal Fault a) Tension pulls the rocks apart b) Rock above the fault surface moves downward in relation to rock below the fault surface c) Dia. 2. Reverse Fault a) Compressi ...
... 3. Shear: forces that causes slipping a) causes rocks on either side of a fault to move past each other C. Types of Faults 1. Normal Fault a) Tension pulls the rocks apart b) Rock above the fault surface moves downward in relation to rock below the fault surface c) Dia. 2. Reverse Fault a) Compressi ...
A Comparison of Local Site Conditions with Passive and Active
... This study encompasses dynamic soil characterization and seismic hazard mapping of the Plio-Quaternary and especially Quaternary alluvial sediments of the Çubuk district and its close vicinity that is situated towards the north of Ankara. The project site is located at a region which has a potential ...
... This study encompasses dynamic soil characterization and seismic hazard mapping of the Plio-Quaternary and especially Quaternary alluvial sediments of the Çubuk district and its close vicinity that is situated towards the north of Ankara. The project site is located at a region which has a potential ...
Damage identification of a 3D full scale steel
... by a bracing system in the orthogonal direction. The frames were made of composite beams and partially encased composite columns, connected by high ductile partial-strength joints designed according to the provisions of Eurocode 8 [2]. The testing programme included a sequence of PsD tests, simulati ...
... by a bracing system in the orthogonal direction. The frames were made of composite beams and partially encased composite columns, connected by high ductile partial-strength joints designed according to the provisions of Eurocode 8 [2]. The testing programme included a sequence of PsD tests, simulati ...
Seismic retrofit
![](https://commons.wikimedia.org/wiki/Special:FilePath/ExteiorShearTruss.jpg?width=300)
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.