Result Extraction Cases [EX1-PIG]
Please follow the instructions provided below to prepare the set of unfactored analysis results.
1 | This object serves multiple purposes, including defining unfactored result cases for AASHTO-based combinations, filtering staged construction results by load type, extracting incremental/ cumulative results from staged construction analysis, and combining transient loads such as wind loads, live loads to identify the most critical load effects. The Result Extraction Cases generated through this process will be utilized in the "Limit States" section. When selecting result cases from a Staged Construction Analysis, there are several options available to extract results: Filter By Load Type=None → Extracts the incremental or cumulative results from the selected stage Envelope=Yes → Finds the critical case from the cases specified in the Cases and Factors column. However, if only one result case is defined in this column, the selection of "yes" or "no" for the envelope will not affect the results. Extreme Effects(Transient Loads)=Yes/No → Selecting this option will exclude the selected result case from the combination if its value in the enveloped column is positive for minimums or negative for maximums. It is recommended to select "No" for permanent loads and "Yes" for transient loads. Choosing EE=Yes for permanent loads may lead to incorrect results since the result may be excluded from the maximum or minimum results. | |
2 | Navigate to Combinations > Result Extraction Cases |
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3 | Enter a name as DC1 for the Result Extraction Case you want to identify
Then Click three-dots icon on Filter by Load Type cell and click Select. | |
4 | Select Dead load type for “DCSub1” as in the figure | |
5 | Set DC1's Envelope to Yes. As a result of an analysis with an Envelope parameter, the most critical value is selected. For the DC1_sub result extraction data (unffactored load case) , ensure that the |
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6 | "Incremental" and "Transient Loads (Extreme Effects)" parameters remain constant (NO). | |
7 | Click three-dots icon on Cases | Factors cell and click edit. To visualize the Dead load in the Result extraction cases, |
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8 | Assign the appropriate Construction Stages for the DCSub1 Result Extraction data (unfactored load case) in the combobox.
Click three-dots icon on Case and click Select to select construction stage.
Select (Construction Stages) Case for DCSub1 as in the figure. Once you have added the cases, enter the corresponding Factor data for each of them. |
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9 | Repeat the same steps from 3 to 7 for the second and other Result Extraction Cases. Enter the Result Extraction Cases as in the figure |
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1 | Navigate to Result Extraction Cases under Combinations on the tree view. |
2 | Copy Items from model inputs and paste into OpenBrIM. |
Completed input spreadsheet is illustrated below.
Result Extraction Cases | |
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Items | Cases | Factors |
DC1 Dead YES NO NO [[BridgeConst, 1],[GirderErection, 1],[SIPFormConst, 1],[DeckConstPour, 1],[DeckConstHard, 1]]
DC2 Imposed Dead NO NO NO [[BarrierConst, 1]]
DW Wearing Surface NO NO NO [[FutureWearingStage, 1]]
LL Live (Vehicular + Impact) YES YES YES [[LLHL93Case, 1]]
LLFat Live (Vehicular + Impact) YES YES YES [[LLFatCase, 1]]
TU Temperature YES YES YES [[TUExpStage, 1],[TUContStage, 1]]
BR Braking NO NO YES [[BrakingStage, 1]]
CENT Centrifugal NO NO YES [[CentrifugalStage, 1]]
WL Wind on Live YES NO YES [[WindonLLStage, 1]]
CT Vehicular Collision YES NO YES [[CollisionStage, 1]]
WS Wind on Structure YES YES NO [[WindonStructureStage, 1]] | [[BridgeConst, 1],[GirderErection, 1],[SIPFormConst, 1],[DeckConstPour, 1],[DeckConstHard, 1]]
[[BarrierConst, 1]]
[[FutureWearingStage, 1]]
[[LLHL93Case, 1]]
[[LLFatCase, 1]]
[[TUExpStage, 1],[TUContStage, 1]]
[[BrakingStage, 1]]
[[CentrifugalStage, 1]]
[[WindonLLStage, 1]]
[[CollisionStage, 1]]
[[WindonStructureStage, 1]] |