{"id":5999,"date":"2013-01-13T08:57:10","date_gmt":"2013-01-13T08:57:10","guid":{"rendered":"http:\/\/www.iiees.ac.ir\/fa\/?p=5999"},"modified":"2013-01-13T08:57:10","modified_gmt":"2013-01-13T08:57:10","slug":"2013-01-13-09-02-42","status":"publish","type":"post","link":"http:\/\/old.iiees.ac.ir\/fa\/2013-01-13-09-02-42\/","title":{"rendered":"\u0628\u0631\u0631\u0633\u06cc \u0646\u062d\u0648\u0647 \u0645\u0644\u062d\u0648\u0638 \u0646\u0645\u0648\u062f\u0646 \u0627\u062b\u0631 \u0645\u0624\u0644\u0641\u0647 \u0647\u0627\u06cc \u062f\u0648\u0631\u0627\u0646\u06cc \u0646\u0627\u0634\u06cc \u0627\u0632 \u0632\u0644\u0632\u0644\u0647 \u0628\u0631 \u067e\u0627\u0633\u062e \u0633\u0627\u0632\u0647 \u0647\u0627\u06cc \u0633\u0627\u062e\u062a\u0645\u0627\u0646\u06cc"},"content":{"rendered":"<div dir=\"rtl\" style=\"text-align: center;\"><strong>\u0628\u0631\u0631\u0633\u06cc \u0646\u062d\u0648\u0647 \u0645\u0644\u062d\u0648\u0638 \u0646\u0645\u0648\u062f\u0646 \u0627\u062b\u0631 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\u0632\u0644\u0632\u0644\u0647 \u0627\u0631\u0627\u0626\u0647 \u0634\u062f.   <\/p>\n<p><\/div>\n<p><strong>\u0648\u0627\u0698\u0647<\/strong>\u200c<strong>\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f\u06cc<\/strong><\/p>\n<p> \u0645\u0624\u0644\u0641\u0647 \u0647\u0627\u06cc \u062f\u0648\u0631\u0627\u0646\u06cc\u060c \u0645\u062d\u0648\u0631\u0647\u0627\u06cc \u0627\u0635\u0644\u06cc \u062a\u062d\u0631\u06cc\u06a9\u060c \u0633\u0631\u0639\u062a \u0641\u0627\u0632\u060c \u0647\u0645\u06af\u0631\u0627\u06cc\u06cc\u060c \u0633\u0627\u0632\u0647 \u0646\u0627\u0645\u0646\u0638\u0645 \u062f\u0631 \u0627\u0631\u062a\u0641\u0627\u0639<\/p>\n<div style=\"text-align: center;\"><strong>Evaluation of Influence of Earthquake Rotational Components on the Behavior of Structures <\/strong><\/div>\n<div dir=\"ltr\" style=\"text-align: center;\">\n<\/div>\n<p dir=\"ltr\" style=\"text-align: center;\">Authors: M. Ashtiani<\/p>\n<p> <\/p>\n<p dir=\"ltr\"><strong>Abstract<\/strong><\/p>\n<div dir=\"ltr\" style=\"text-align: justify;\"><\/div>\n<p> <\/p>\n<div style=\"text-align: justify;\">The objective of this report is to evaluate the influences of the rotational components on the dynamic behavior of structures. To achieve this, after reviewing common methods for obtaining the rotational components in earthquake-engineering applications, new formulations in order to evaluate the rotational motion corresponding to a point on the ground surface, and foundation input motions are derived. A procedure is also presented to estimate all foundation input motions, and the influence of the geometrical shape of foundation on the structural excitation is parametrically studied. Next, to investigate the importance of the rotational components in ordinary structural analyses, the contribution of the foundation input rocking component relative to the corresponding foundation input translational components to the dynamic responses of a set of vertically irregular and regular structures is evaluated. Numerical results show that the seismic loading of the rocking component is more dependent on the distribution of mass, stiffness and geometrical shape of structures in height in comparison to the translational ones. This contribution of the rocking components in structural responses can be detrimental and in the especial cases can achieve to 60%; however, this contribution is 15% in average. Finally, reviewing the provisions of seismic design codes shows that the effects of the rocking and torsional components have not been considered by current codes. In addition, the accidental eccentricity presented by these codes cannot consider the influence of torsional components, effectively. Therefore, a new method for evaluating the accidental eccentricity of structures due to torsional loading has also been derived and its application has been shown. However, further study is still necessary to verify the application of the proposed method.<\/div>\n<p dir=\"ltr\"><strong><br \/>Keywords:<\/strong><\/p>\n<div dir=\"ltr\" style=\"text-align: left;\">Rotational Components; Principal Axes; Phase Velocity; Coherency; Vertically Irregular Structure; Accidental Eccentricity<\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u0628\u0631\u0631\u0633\u06cc \u0646\u062d\u0648\u0647 \u0645\u0644\u062d\u0648\u0638 \u0646\u0645\u0648\u062f\u0646 \u0627\u062b\u0631 \u0645\u0624\u0644\u0641\u0647 \u0647\u0627\u06cc\u062f\u0648\u0631\u0627\u0646\u06cc \u0646\u0627\u0634\u06cc \u0627\u0632 \u0632\u0644\u0632\u0644\u0647 \u0628\u0631 \u067e\u0627\u0633\u062e \u0633\u0627\u0632\u0647 \u0647\u0627\u06cc \u0633\u0627\u062e\u062a\u0645\u0627\u0646\u06cc \u0645\u062c\u0631\u06cc \u067e\u0631\u0648\u0698\u0647: \u0645\u062d\u0633\u0646 \u063a\u0641\u0648\u0631\u06cc \u0622\u0634\u062a\u06cc\u0627\u0646\u06cc \u0647\u0645\u06a9\u0627\u0631:\u0645\u062d\u0645\u062f\u0631\u0636\u0627 \u0641\u0644\u0627\u0645\u0631\u0632 \u0634\u06cc\u062e \u0622\u0628\u0627\u062f\u06cc \u0686\u06a9\u06cc\u062f\u0647 \u0647\u062f\u0641<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-5999","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\/5999","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=5999"}],"version-history":[{"count":0,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/posts\/5999\/revisions"}],"wp:attachment":[{"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/media?parent=5999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/categories?post=5999"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/old.iiees.ac.ir\/fa\/wp-json\/wp\/v2\/tags?post=5999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}