{"id":5615,"date":"2012-02-18T09:20:58","date_gmt":"2012-02-18T09:20:58","guid":{"rendered":"http:\/\/www.iiees.ac.ir\/fa\/?p=5615"},"modified":"2012-02-18T09:20:58","modified_gmt":"2012-02-18T09:20:58","slug":"2012-02-18-09-23-50","status":"publish","type":"post","link":"http:\/\/old.iiees.ac.ir\/fa\/2012-02-18-09-23-50\/","title":{"rendered":"\u0645\u0642\u0627\u06cc\u0633\u0647 \u0631\u0641\u062a\u0627\u0631 \u0644\u0631\u0632\u0647\u200c\u0627\u06cc \u0645\u0647\u0627\u0631\u0628\u0646\u062f\u0647\u0627\u06cc \u062f\u0631\u0648\u0627\u0632\u0647\u200c\u0627\u06cc \u0628\u0627 \u0645\u0647\u0627\u0631\u0628\u0646\u062f\u0647\u0627\u06cc \u0647\u0645 \u0645\u0631\u06a9\u0632 \u062f\u0631 \u0642\u0627\u0628\u0647\u0627\u06cc \u0641\u0648\u0644\u0627\u062f\u06cc"},"content":{"rendered":"<div dir=\"rtl\" style=\"text-align: center;\"><strong>\u0645\u0642\u0627\u06cc\u0633\u0647 \u0631\u0641\u062a\u0627\u0631 \u0644\u0631\u0632\u0647\u200c\u0627\u06cc 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\u0634\u06a9\u0644\u200c\u067e\u0630\u06cc\u0631\u06cc<\/p>\n<\/p>\n<p>\u200c<\/p>\n<div dir=\"ltr\" style=\"text-align: center;\"><strong> A Study on Seismic Control of Skewed Bridges Using Semi-Active Methods<\/strong><\/div>\n<p dir=\"ltr\" style=\"text-align: center;\">Authors: A.Kalantari, M. Amjadiyan<\/p>\n<\/p>\n<p dir=\"ltr\"><strong>Abstract<\/strong><\/p>\n<p> Based on extensive application of steel bracings for earthquake resistance, special attention is necessary to understand the performance of bracing systems. One common bracing system used in recent years is Y type. There is no discussion in Iranian standard 2800 about this kind of bracing, but its application is increasing and designers consider this bracing type similar to X bracing type.  <\/p>\n<p dir=\"ltr\">In this research, bracing type Y and YY have been studied and compared with Z and K types in different bays of steel frames. Nonlinear static and dynamic analyses performed on 2D frames with different bracing arrangements and with different number of bays and floors. Based on the analyses, pushover curves, hysteretic behavior, ductility, initial stiffness, overstrength, energy absorption and plastic hinges have been studied. Results indicate initial stiffness and ductility of Y bracings are lower than 1\/3 and 3\/4 of X bracings respectively. Also, hysteretic curves of Y bracings indicate low energy absorption with more nonlinear behavior of frames.<\/p>\n<p dir=\"ltr\"><strong>Keywords:<\/strong><\/p>\n<p dir=\"ltr\">Y type bracings, Concentric Bracings, Steel Frames, Nonlinear Dynamic Analysis, Ductility,<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0645\u0642\u0627\u06cc\u0633\u0647 \u0631\u0641\u062a\u0627\u0631 \u0644\u0631\u0632\u0647\u200c\u0627\u06cc \u0645\u0647\u0627\u0631\u0628\u0646\u062f\u0647\u0627\u06cc \u062f\u0631\u0648\u0627\u0632\u0647\u200c\u0627\u06cc \u0628\u0627 \u0645\u0647\u0627\u0631\u0628\u0646\u062f\u0647\u0627\u06cc \u0647\u0645 \u0645\u0631\u06a9\u0632 \u062f\u0631 \u0642\u0627\u0628\u0647\u0627\u06cc \u0641\u0648\u0644\u0627\u062f\u06cc \u0645\u062c\u0631\u06cc \u067e\u0631\u0648\u0698\u0647:\u0646\u0642\u062f \u0639\u0644\u06cc \u062d\u0633\u06cc\u0646\u200c\u0632\u0627\u062f\u0647 \u0647\u0645\u06a9\u0627\u0631:\u0645\u062d\u0645\u0648\u062f \u062d\u0633\u06cc\u0646\u06cc \u0686\u06a9\u06cc\u062f\u0647 \u06a9\u0627\u0631\u0628\u0631\u062f \u0631\u0648\u0632\u0627\u0641\u0632\u0648\u0646 \u0645\u0647\u0627\u0631\u0628\u0646\u062f\u0647\u0627\u06cc \u0641\u0648\u0644\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0645\u0642\u0627\u0628\u0644\u0647 \u0628\u0627<span style=\"color:#28B3C7\"> \u0627\u062f\u0627\u0645\u0647 \u2026<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40],"tags":[],"class_list":["post-5615","post","type-post","status-publish","format-standard","hentry","category-2008-06-21-08-21-37"],"_links":{"self":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/posts\/5615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/comments?post=5615"}],"version-history":[{"count":0,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/posts\/5615\/revisions"}],"wp:attachment":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/media?parent=5615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/categories?post=5615"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/tags?post=5615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}