{"id":11659,"date":"2023-02-04T13:24:11","date_gmt":"2023-02-04T13:24:11","guid":{"rendered":"http:\/\/141.23.68.248\/wp\/?page_id=11659"},"modified":"2023-02-14T10:38:09","modified_gmt":"2023-02-14T10:38:09","slug":"steel-bridge","status":"publish","type":"page","link":"http:\/\/141.23.68.248\/wp\/?page_id=11659","title":{"rendered":"Steel Bridge"},"content":{"rendered":"

Introduction:<\/h3>\n

The bridge represents a critical connection Structure and has a major Influence on
\nsocial and economic events of any country, city, or community. It is essential to the
\ntransportation of Goods and movement of People across all sorts of obstacles. Steel
\nBridges have played a large part in fulfilling these Roles since the Beginning of the 19th
\nCentury.
\nSteel itself is a ductile Material suitable for construction, it has a Yield stress of about
\n240 MPa and tensile strength about 360 MPa for normal Strength structural steel,
\nStructures also made of Steel can be constructed in less Time and offers a large Variety
\nof design options and supports Flexibility during both Manufacturing and Construction.
\nDesigning a Steel bridge is mainly influenced by the Dimensions required for the Bridge
\nas well as the main Use for it, which determines the Different Loads and Strains it will
\nbe subjected to, which in turn reflects on its Dimensions and Structural System.<\/p>\n

Ontology Model :<\/h3>\n

\u2022 What is the purpose? – This ontology is developed to represent the main Structure
\nand Components of the Steel Bridge and to provide a clear Representation of both its
\nSub-Structure and Super-Structure.
\n\u2022 What is the scope? – This ontology includes concepts such as the Materials used in
\nBridge Construction, main Structural Components as well as the possible bridge uses
\nand their relations.
\n\u2022 Who are the intended end-users? – The intended end-users are the Civil Engineers
\nand construction technicians who are responsible for constructing and maintaining the
\nBridge.
\n\u2022 What is the intended use? – The ontology is intended to be used as a Framework to
\nmodel the Bridge and understand its main Components and the materials used in its
\nConstruction as well as aid in its modelling and any necessary repair Procedure.<\/p>\n

\"steel<\/a><\/p>\n

\u00a0Parametric Model:<\/h3>\n

The Bridge Consists of Concrete Slab (thickness=25cm) whose load is transmitted to
\ncross Steel Girders which are in turn placed atop the Main Steel Girders and Finally
\nthese are placed on Concrete Abutments.
\nThere is also lateral and upper Bracing for Between the Main Girders.
\nThe designed Parametric Model offers us a large degree in determining the Dimensions
\nand no. of Cross Girders that are present in the Bridge according to the following
\nspecifications:<\/p>\n

 <\/p>\n\n\n\n\n\n\n
Input Parameter<\/td>\nMax. Value<\/td>\nMin. Value<\/td>\nStep<\/td>\n<\/tr>\n
Bridge Length<\/td>\n50<\/td>\n10<\/td>\n1<\/td>\n<\/tr>\n
Bridge Width<\/td>\n12<\/td>\n3<\/td>\n1<\/td>\n<\/tr>\n
Spacing between Cross Girders<\/td>\n1<\/td>\n15<\/td>\n0.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

This in Turn allows us to better examine the different Stresses resulting on the main
\nStructural Components when varying the different Input Parameters which allows the
\nDesigner to make informed Decisions.<\/p>\n

\"m0\"<\/a><\/p>\n

This represents the part of the Dynamo that is responsible for creating the main
\nStructural elements of the Bridge: Main Girders \u2013 Cross Girders \u2013 Lateral and Upper
\nBracing<\/p>\n

 <\/p>\n

\u00a0 \"m1\"<\/a><\/h3>\n

This part defines the main Lines and Coordinates of the Bridge as well as the position of
\nthe Slab and Abutment.<\/p>\n

\"m2\"<\/a><\/p>\n

And finally we have this Part which calculates the loads on the Bridge using
\napproximate Equations and also allows us to change the Input Parameters using Slider
\nNodes and observe the effect on Stresses on Structural Members.<\/p>\n

\"m3\"<\/a><\/p>\n

We notice from the Model that the most important Parameter in our structural model is
\nprobably the Spacing between the Cross Girders as it has a noticeable effect on the
\nStraining actions on all the Structural Elements: Main Girders \u2013 Cross Girders \u2013 Lateral
\nand Upper Bracing.
\nThe High Performance Criteria are:
\n1- The Deck Area of the Bridge which should be maximized but within the allocated
\nProject Budget.
\n2- The No. and Dimensions of the Bridge\u2019s Structural Elements which should be
\nminimized to make the Bridge more economic.
\nIdeally the Designer would specify the Length and required Width of the Bridge and then
\nvary the Spacing between the Cross Girders.<\/p>\n

\"s1\"<\/a><\/p>\n

But another option would also be to specify the Spacing First and then adjust the
\nDimensions of the Bridge itself (Length and Width).<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

\"s2\"<\/a><\/p>\n

 <\/p>\n

The Choice between any of these two methods would depend on the Constraints
\nthat the Project is subject to.<\/p>\n

 <\/p>\n

Here you can download the OWL File for the Ontology:steel-project-ontology<\/a><\/p>\n

 <\/p>\n

Here you can download the Parametric Model (please make sure to open the Revit file first and then open Dynamo File from within Revit in Manage Tab so that the visualization works):steel-bridge-script<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Introduction: The bridge represents a critical connection Structure and has a major Influence on social and economic events of any country, city, or community. It is essential to the transportation of Goods and movement ofContinue reading<\/a><\/p>\n","protected":false},"author":182,"featured_media":0,"parent":11929,"menu_order":4,"comment_status":"closed","ping_status":"open","template":"page-templates\/page_fullwidth.php","meta":{"footnotes":""},"class_list":["post-11659","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/11659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/users\/182"}],"replies":[{"embeddable":true,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11659"}],"version-history":[{"count":10,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/11659\/revisions"}],"predecessor-version":[{"id":11681,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/11659\/revisions\/11681"}],"up":[{"embeddable":true,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/11929"}],"wp:attachment":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}