Normally, two distinct scenarios should be generated with two stages for contraction and expansion.
Bridge (tl_bridge): Choose the bridge to automatically apply the temperature load on all deck and girder components. (Required, Type: OBPBridge, Default: BRG1)
Stage (stg): Choose a stage to apply the uniform temperature loading. (Type: OBPConstructionStage, Default: NULL)
Temperature Change From Mean (temp_diff): When dealing with expansion, it is necessary to input a positive temperature value, whereas a negative temperature value should be utilized for contraction. (Type: Temperature, Unit Category: Property, Default: 0)