![]() ![]() ![]() The effectiveness of rocking as an earthquake hazard mitigation strategy has been explored for various classes of structures, including rigid blocks, columns of ancient temples rocking frames, rocking bridges and rocking buildings. Such a rocking mechanism limits the design loads and moments on both the structure and the foundation, offering great optimization potential. The uplifting of a block or a structural element, such as a column, defines a limit value of inertia force, which can be transmitted between the foundation and the structure. In the last few decades, it has attracted a lot of research interest for its use as an earthquake hazard mitigation strategy. The rocking oscillator can be described as a rigid block that uplifts from its base when subjected to sufficiently strong ground motion. Finally, the results produced on the basis of far-field synthetic motions are compared to results based on recorded ground motions. Impressively, the fragility curves for different block sizes collapse to a single curve, if a non-dimensional IM that involves PGV and the block geometry is used. Then, fragility curves are constructed using different IMs, concluding again that the PGV is the most efficient IM. By comparing the efficiency, sufficiency and proficiency of the IMs, it is found that the peak ground velocity (PGV) performs optimally. The results are used to explore the performance of different ground motion intensity measures (IMs), in terms of their ability to predict the maximum rocking rotation. A total of 50 million analyses are performed, considering rocking blocks of height ranging from 1 to 20 m and slenderness angle ranging from 0.1 to 0.35 rad. In this context, this paper statistically studies the rocking behaviour of rigid blocks, excited by synthetic far-field ground motions. Although fairly simple, the problem of a rocking block on a rigid base subjected to seismic excitation exhibits a fascinating, complex response, making it extremely difficult to validate numerical models against experimental results, thus calling for a statistical approach. *Same Day Shipping depending on inventory and receipt of oxygen prescription.Problems for which it is impossible to make a precise causal prediction are commonly tackled with statistical analysis. However with its energy-efficient motor that requires 590 watts of power consumption per hour, you can rest assured knowing you won't be stuck with a gigantic increase to your monthly bill. Though you need the high flow capabilites of the AirSep NewLife Intensity 10, you may be hesitant to make the switch in fear of hiking up your already costly electricity bill. This unique stationary oxygen concentrator delivers air at a pressure of 20 psig, which is twice as much as many oxygen concentrators available today. Due to the combination of high pressure and high flow oxygen, the NewLife Intensity 10 is capable of providing necessary outlet pressure to operate medical nebulizers, venti-masks and volume jet nebulizers. Helping you to ensure that the concentrator is functioning as intended at all times during treatment.Ĭompatible with Numerous Respiratory Accessories To help keep your mind at ease the AirSep NewLife Intensity 10 is equipped with audible alarms that will alert you of high and low pressure, low oxygen and power failure. Using a humidifier bottle will help aleviate things like sore/irritated nostrils, dry nose, and nosebleeds.Īudible Alarms that Ensure Proper Operation The humidifier bottle attaches to the front of the machine for easy cleaning and refilling. The AirSep NewLife Intensity 10 is capable of using one or two humidifier bottles at the same time. The easy to use control panel allows you to simply flip a switch to turn the unit on and twist a knob to adjust to your required flow rate. It offers an outlet pressure of 20 psig and can deliver 10 liters per minute to one or two pateints simultaneously. The Intensity 10 is equipped with a powerful compressor to deliver up to 10 liters per minute of oxygen. AirSep NewLife Intensity 10 Dual Additional Information Enjoy Up to 10 Liters of Oxygen per Minute
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