دانلود رایگان ترجمه مقاله آنالیز و طراحی لرزه ای سازه های زیرزمینی – الزویر 2001
دانلود رایگان مقاله انگلیسی طراحی لرزه ای و تجزیه و تحلیل سازه های زیرزمینی به همراه ترجمه فارسی
عنوان فارسی مقاله: | طراحی لرزه ای و تجزیه و تحلیل سازه های زیرزمینی |
عنوان انگلیسی مقاله: | Seismic design and analysis of underground structures |
رشته های مرتبط: | مهندسی عمران، ژئوفیزیک، لرزه نگاری، سازه، مدیریت ساخت و زلزله |
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کیفیت ترجمه | کیفیت ترجمه این مقاله خوب میباشد |
توضیحات | تنها صفحات 11 الی 17 ترجمه شده است. |
نشریه | الزویر – Elsevier |
کد محصول | f206 |
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بخشی از ترجمه فارسی مقاله: 4.3. طراحی ضوابط زلزله ها |
بخشی از مقاله انگلیسی: 4.3. Design earthquakes criteria Once the seismic hazard at the site is characterized, the level of design earthquake or seismicity has to be defined. For example, in PSHA, the designer must select the probability of exceedance for the sets of ground motion parameters. Current seismic design philosophy for many critical facilities requires dual two- Ž level design criteria, with a higher design level . earthquake aimed at life safety and a lower design level earthquake intended for economic risk exposure. The two design levels are commonly defined as ‘maximum design earthquake’ or ‘safety evaluation earthquake’ Ž . and ‘operational design earthquake’ or ‘function eval- Ž uation earthquake’ , and have been employed in many . recent transportation tunnel projects, including the Los Angeles Metro, Taipei Metro, Seattle Metro, and Boston Central ArteryThird Harbor Tunnels. 4.3.1. Maximum Design Earthquake The Maximum Design Earthquake MDE is defined Ž . in a DSHA as the maximum level of shaking that can be experienced at the site. In a PSHA, the MDE is defined as an event with a small probability of exceedance during the life of the facility e.g. 3 Ž . 5% . The MDE design goal is that public safety shall be maintained during and after the design event, meaning that the required structural capacity under an MDE loading must consider the worst-case combination of live, dead, and earthquake loads. Recently, some owners e.g. San Ž Francisco BART have begun requiring their facilities, . identified as lifelines, to remain operational after MDE level shaking. 4.3.2. Operating Design Earthquake The Operating Design Earthquake ODE is an Ž . earthquake event that can be reasonably expected to occur at least once during the design life of the facility Že.g. an event with probability of exceedence between 40 and 50% . In an ODE analysis, the seismic design . loading depends on the structural performance requirements of the structural members. Since the ODE design goal is that the overall system shall continue operating during and after an ODE and experience little or no damage, inelastic deformations must be kept to a minimum. The response of the underground facility should therefore remain within the elastic range. |