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Earthquake Seismic Articles & Analysis
18 articles found
Temporary dewatering and deployment during dry windows were necessary to avoid trapped vapor beneath the liner, which can induce ballooning and compromise long-term performance.Seismic activity and ground movement: Located in Seismic Zone V, Assam experiences significant seismicity. The 1950 Assam earthquake (magnitude 8.6) underscores the need ...
A well-designed crane accounts for environmental temperature cycles to maintain accuracy and structural integrity across seasons. 3. Seismic Load: Preparing for Earthquake-prone Regions Seismic load is another essential environmental factor, especially for gantry cranes installed in seismic zones like Japan, Turkey, Chile, and ...
Current Technologies for Analyzing the Effects of Earthquakes The term “earthquake” is often used to describe any seismic event that generates seismic waves. Earthquakes can occur naturally by moving the Earth’s tectonic plates, geological faults, volcanic activity, landslides, and other seismic ...
Factors to consider include weather conditions (wind, rain, temperature extremes), exposure to saltwater or corrosive elements (in coastal areas or maritime terminals), seismic activity (earthquakes), and proximity to industrial activities or hazardous materials. Choose a crane with weatherproofing, corrosion protection, seismic resistance, and ...
In July of this year, North America’s west coast experienced a string of earthquakes, some rating as high as 6.7 in magnitude. This recent seismic activity has left many people worried and wondering if these quakes are just par-for-the-course or a sign of something worse to come. ...
The Seismic Use Group along with the seismic accelerations at the site help determine the Seismic Design Category of a structure. ...
I’m currently working on the geotechnical design of large bridges over Lake Barkley and Kentucky Lake near the New Madrid Seismic Zone. The Kentucky Transportation Cabinet is replacing narrow bridges that were built in the 1930s over two rivers in that area. ...
Earthquake preparedness of citizens is recognised as an efficient means for better coping with shaking impact and making easier the emergency management. ...
Scientist Warwick Vincent likened the collapse, the largest recorded in the Canadian Arctic, to a cruise missile hitting the shelf after it registered as a small earthquake at a seismic station 150 miles away. In 2006 we learned of the world’s first wild polar bear–grizzly bear hybrid, of further increases in relatively warm Pacific water flowing ...
ByEnsia
Dampers are the first elements in structures which respond to seismic forces, prevent from destructive damage to other main elements of structure and reduce the costs related to structural improvement. ...
The present paper analyses the behaviour of moment resisting frames in reinforced concrete subject to earthquakes recorded in near–field areas. In these areas, the signals show impulsive–type accelerograms, with velocity and displacement peaks higher than in far–field zones especially for the fault–normal component of the ground motion velocity in the direction of propagation of ...
In this paper, attention is focused on the modelling and nonlinear seismic analysis of framed structures equipped with friction, metallic yielding, viscoelastic and viscous dampers. A design procedure is proposed for proportioning damped braces in order to attain, for a specific level of seismic intensity, a designated performance level of the structure. A ...
Seismic loads on piping system due to earthquakes can cause excessive vibrations, which can lead to serious instability resulting in damage or complete failure. In this paper, semi–active variable friction dampers (SAVFDs) have been studied to mitigate seismic response and vibration control of piping system used in the process industries, fossil ...
The main purpose of this study is to propose an evaluation method that can be used for analysing the time–dependent seismic reliability of reinforced concrete (RC) buildings located in a corrosive environment with high seismic hazard. ...
A three–story frame was designed for earthquake resistance by using post–tensioned (PT) columns and beams. Two interior connections, representing the first floor column and beam sizes, were tested under cyclic loading to evaluate the effects of energy dissipation and PT load and on the seismic behaviour. ...
This project modelled a catastrophic earthquake (M7.7) in the New Madrid Seismic Zone (NMSZ). The US Geological Survey (USGS) has estimated the probability of a major NMSZ (M7.5 to M8.0) earthquake has a 7% to 10% probability of occurring in a 50-year period (US Geological Survey, 2006). ...
The optimal design parameters of TMD in terms of damping coefficients and spring constant corresponding of TMD are determined through minimisation of two performance index contain inter-story drifts and acceleration of floors for safety and habitability respectively under one-dimensional earthquake loading simulated by passing a Gaussian white noise process through a second order ...
The aim of the questionnaire is to evaluate seismic effects as felt by the compiler. The final result is a definition of a particular degree of intensity with an evaluation of an associated uncertainty. Results of medium to low magnitude earthquakes are presented here, showing the ability of the method to give fast and interesting results. Effects reported in ...