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{live-template:Test Problem}

h1. Overview

ThisTo simulate simplea two -span model simulates a structure thatwhich is simply supported forunder dead loadsload, and continuous forunder live load., Aa [staged construction|kb:staged construction] [load case|kb:load case] is defined with 5five stages, wasoutlined defined as follows to simulate this condition:

* Stage 1: Add 2two [frame|kb:Frame] elementsobjects, one element for each span.

* Stage 2: AssignDefine momentframe end releases tothrough Define start> jointNamed ofProperty theSets frame> elementFrame representingReleases, thethen secondassign span.these (themoment framereleases endto releasesthe must be first defined via "Define > Named Property Sets > Frame Releases"; see [staged start [joint|kb:Joint] of the second span.
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Additional information is available in the [Staged-construction tips|kb:Staged construction tips] and [staged Staged-construction operations|kb:Staged-construction operations]) articles.

* Stage 3: Apply load loads,to the structure. responseResponse will be as for athough the system is simply supported.
structure.
* Stage 4: Fix the moment end releases which are applied in Stage 2.

* Stage 5: Apply loads,additional theload responseto forthe thesestructure. additionalResponse loadswill willnow be as for athough the system is continuous structure.

h1. Model Screenshot.

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Structural response is presented in Figure 1:

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!2-span_girder_simply_supported_for_DL_and_continuous_for_LL.png|align=center,border=0!

{center-text}Figure 1 - Structural response{center-text}


h1. Attachments

* [SAP2000 V12.0.1 model |Two-span girder simply-supported for DL and continuous for LL^SAP2000 V12.0.1 model.zip] (zipped .SDB file)