{"id":9511,"date":"2021-07-17T17:31:26","date_gmt":"2021-07-17T22:31:26","guid":{"rendered":"https:\/\/www.imegcorp.com\/?p=9511"},"modified":"2022-02-11T12:05:29","modified_gmt":"2022-02-11T18:05:29","slug":"continuity-connections-are-critical-for-modeling-multi-span-bridges","status":"publish","type":"post","link":"https:\/\/imegcorp.com\/insights\/blog\/continuity-connections-are-critical-for-modeling-multi-span-bridges\/","title":{"rendered":"Continuity connections are critical for modeling multi-span bridges"},"content":{"rendered":"<p><span data-contrast=\"auto\">By Yanling Leng<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Multi-span bridges composed of simple-span precast girders with continuous deck and diaphragms at interior supports have been a popular solution since the 1960s. State DOTs have employed various details and design methodologies. Understanding the details and designs of the continuity connections is critical for successfully modeling this type of bridge.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Based on the 2013 AASHTO WSDOT Questionnaire, \u201cPrestressed Girder Design Criteria,\u201d as well as the results of a survey I previously conducted, the details and designs of continuity connections can be grouped into two categories:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Category #1: Design a series of simple spans for all loads. The slab (with or without diaphragms at interior supports) is continuous over the interior supports but ignored in girder design.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Category #2: Design as simple for the non-composite dead load (girder and slab weight), continuous for the composite dead load (railings and FWS), and live load.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">I explain the process of understanding the details and designs of continuity connections in my latest blog post for Midas. I also show both simple spans for all loads and even non-composite dead loads and how they can both be considered in midas Civil.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Read my blog and get all the details on the <\/span><a href=\"https:\/\/www.midasoft.com\/bridge-library\/modeling-of-bridges-composed-of-simple-span-precast-i-girders-made-continuous?utm_campaign=Bridge%20Subscription&amp;utm_medium=email&amp;_hsmi=194844065&amp;_hsenc=p2ANqtz-90rxBpObGhKB-eJYafqJaPWsPN6bzg2KYvqZW5PtEcQrH8FaJNcbGltLuS3j5fiqrqk37vYfoJcug39i-xlJBTnJ31_w&amp;utm_content=194839289&amp;utm_source=hs_email\"><span data-contrast=\"none\">Midas website.<\/span><\/a><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Understanding the details and designs of continuity connections is critical for successfully modeling multi-span bridges composed of simple-span precast girders with continuous deck and diaphragms at interior supports. IMEG consulting engineer Yanling Yeng examines this topic.<\/p>\n","protected":false},"author":5,"featured_media":9512,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[3,269],"tags":[],"class_list":["post-9511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs","category-transportation"],"acf":[],"yoast_head":"\n<title>Continuity connections are critical for modeling multi-span bridges - IMEG<\/title>\n<meta name=\"description\" content=\"Understanding the details and designs of continuity connections is critical for successfully modeling multi-span bridges composed of simple-span precast girders with continuous deck and diaphragms at interior supports. 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