Load Combination & Results Extraction & Documentation

Load combination and analysis results extraction for steel i girder workflow consists of multiple modular library components. These library objects are;

Unfactored analysis combination (OBPAnalysisCase)

Library Link : https://openbrim.org/objidaziddvhrjxolk0z8zf92xo.libobj?values=LoadType_Input:0%7CisEnvelope:0%7CisIncremental:0%7CisExtreme:0%7CcasesAndFactors:%7C

This library component is a workflow item and is developed for OBP workflow.

The object is created to define unfactored load case combinations/envelopes. With this object, staged construction/deconstruction and other cyclic/static load cases can be combined. This object allows user to filter the case results based on the load type, envelope cases, extract incremental/cumulative results, combine cyclic loads to create most critical load effects.

The name of the core “Combination” object in the library component is added to the name of app instance of the library component.

Limit States (OBPAASHTOLimitState)

Library Link : https://openbrim.org/objidt1hmdr8fd8oopkivmlna.libobj?values=eta_D:1%7Ceta_R:1%7Ceta_I:1%7CLoadCase1:null%7CMaxLoadFactor1:1%7CMinLoadFactor1:1%7CLoadCase2:null%7CMaxLoadFactor2:1%7CMinLoadFactor2:1%7CLoadCase3:null%7CMaxLoadFactor3:1%7CMinLoadFactor3:1%7CLoadCase4:null%7CMaxLoadFactor4:1%7CMinLoadFactor4:1%7CLoadCase5:null%7CMaxLoadFactor5:1%7CMinLoadFactor5:1%7CLoadCase6:null%7CMaxLoadFactor6:1%7CMinLoadFactor6:1%7CLoadCase7:null%7CMaxLoadFactor7:1%7CMinLoadFactor7:1%7CLoadCase8:null%7CMaxLoadFactor8:1%7CMinLoadFactor8:1%7CLoadCase9:null%7CMaxLoadFactor9:1%7CMinLoadFactor9:1%7CLoadCase10:null%7CMaxLoadFactor10:1%7CMinLoadFactor10:1%7CLoadCase11:null%7CMaxLoadFactor11:1%7CMinLoadFactor11:1%7CLoadCase12:null%7CMaxLoadFactor12:1%7CMinLoadFactor12:1%7CLoadCase13:null%7CMaxLoadFactor13:1%7CMinLoadFactor13:1%7CLoadCase14:null%7CMaxLoadFactor14:1%7CMinLoadFactor14:1%7CLoadCase15:null%7CMaxLoadFactor15:1%7CMinLoadFactor15:1%7CLoadCase16:null%7CMaxLoadFactor16:1%7CMinLoadFactor16:1%7CLoadCase17:null%7CMaxLoadFactor17:1%7CMinLoadFactor17:1%7CLoadCase18:null%7CMaxLoadFactor18:1%7CMinLoadFactor18:1%7CLoadCase19:null%7CMaxLoadFactor19:1%7CMinLoadFactor19:1%7CLoadCase20:null%7CMaxLoadFactor20:1%7CMinLoadFactor20:1%7CLoadCase21:null%7CMaxLoadFactor21:1%7CMinLoadFactor21:1%7CLoadCase22:null%7CMaxLoadFactor22:1%7CMinLoadFactor22:1%7CLoadCase23:null%7CMaxLoadFactor23:1%7CMinLoadFactor23:1%7CLoadCase24:null%7CMaxLoadFactor24:1%7CMinLoadFactor24:1%7CLoadCase25:null%7CMaxLoadFactor25:1%7CMinLoadFactor25:1%7CLoadCase26:null%7CMaxLoadFactor26:1%7CMinLoadFactor26:1%7CLoadCase27:null%7CMaxLoadFactor27:1%7CMinLoadFactor27:1%7CLoadCase28:null%7CMaxLoadFactor28:1%7CMinLoadFactor28:1%7CLoadCase29:null%7CMaxLoadFactor29:1%7CMinLoadFactor29:1%7C

This library component is a workflow item and is developed for OBP workflow.

This object is created to collect the load cases and their max/min load factors accordingly and collects the load modifiers of that limit state. Each instance is a definition of a limit state (Strength/Service/Fatigue/Extreme Event etc.)

This object collects the OBPAnalysisCase as input for 29 different load cases. However, it is not required to set all of these 29 load cases at the same time.

Beware that the name of core combination object "Comb" is originated from OBPAnalysisCase object and is necessary for result extraction. Thus, if the name “Comb” changes, the CaseObjName parameter must be updated accordingly.

The object exports a list of [load case, load type enumeration, modified maximum factor, modified minimum factor, description of load type enumeration] for each load case input. Then, sorts these lists based on their load type enumeration. This sorted list 'SortedStateList' is to be used for result extraction.

Load Combination Table (OBPAASHTOLimitStateTable)

Library Link : https://openbrim.org/objid75uxbqmoluk9xqssjqiu7m.libobj?values=StrengthI_Input:null%7CStrengthII_Input:null%7CStrengthIII_Input:null%7CStrengthIV_Input:null%7CStrengthV_Input:null%7CExtremeEventI_Input:null%7CExtremeEventII_Input:null%7CServiceI_Input:null%7CServiceII_Input:null%7CServiceIII_Input:null%7CServiceIV_Input:null%7CFatigueI_LL_IM_CE_Input:null%7CFatigueII_LL_IM_CE_Input:null%7C

This library component is a workflow item and is developed for OBP workflow.

This object collects the OBPAASHTOLimitState as input for each limit state combination.

This object is created to collect the previously defined limit states. These limit state inputs are based on AASHTO. Two core combination objects (Max/Min) are created for each limit state input. Overall limit state envelopes are created for each strength-service-fatigue-extreme event limit states. Overall envelope is created using all the combination that are created in the object. The name of each core combination is exported as text for result extraction object.

Results Extraction Object (OBPBase_FECompositeForceExtraction)

Library Link : https://openbrim.org/objidt02vu3q13smozf70dtm5j.libobj?values=DesignComb_Input:null%7CFEComp_Description:0%7CStationList_Input:600,900%7CComputeFor:0%7C

This library component is developed for OBP worfklow but is not a workflow item. The aim of this object is to extract the analysis results of limit states/unfactored load cases/combinations and envelopes.

This object collects OBPAASHTOLimitStateTable , FE description , station list and compute for parameters as input.