$$$$ PHASAGE NOTICE CHAT 11/09/12 21:17:36 7124 DATE 11/09/12 Procedure PHASAGE Voir aussi : PREC ----------------- EPAIFUT TENSION PFLUAGE RETRAIT Voir exemple: phasage.dgibi Description : _____________ This procedure computes states of initial stresses at the end of construction or a the end of the tightening of tendons for a concrete structure. All indexes of table TAB1 are words, the list is : 'FLUAGE' : one of the four following words 'BPEL99', 'BPEL91' 'LG','EC2' indicates which regulatory is applied to compute creep. If this data is not provided creep is not taken into account. 'RETRAIT' : one of the four following words 'BPEL99', 'BPEL91' 'LG','EC2' indicates which regulatory is applied to compute shrinkage. If this data is not provided shrinkage is not taken into account. 'LEVEES' : References a table object giving informations about phases of construction of the concrete. Indexes of this table are integer values 1,...,N which represent the N phases of construction. Each integer index references a new object table which indexes are the following words : 'MODELE' : Modele object associated whith this part of the construction. 'MATERIAU' : material datas associated to the previous modele. 'INSTANT' : Time (in days) from the beginning of the construction to the construction of this phase.(TAB1.LEVEES.1 must be equal to 0). ('COEF1') : real value giving the hygrometric ratio needed to compute shrinkage (only if shrinkage is asked). ('COEF2') : chamelem object giving the passive reinforcement ratio for this phase (only if shrinkage is asked). ('SECHAGE') : chamelem object giving drying radius in centimeters ( see EPAIFUT procedure) (only if shrinkage is asked). 'PRECONTRAINTE' : contains a table object describing sequences of tightening of tendons. his table object is created by the TENSION procedure) 'MOD_RESTE': model associated to the structure but concrete and tendons ( reinforcement, liner ...) 'MAT_RESTE': material datas associated to the previous model. 'BLOCAGES' : rigidity object giving all displacements conditions. 'RIGIDITE_ADDITIONNELLE' : rigidity object which is constant and not coming from previous models ( concrete reinforcement,tendons..). 'TEMPS_FINAL': ending time of the computation. This time must be greater than the last phase of construction and of the last tightening of tendons. 'SOUS_LEVEES' : Integer value giving the number of substepping to compute creep between two phases of construction (the default value is 1) 'SOUS_PRECONTRAINTES' : Integer value giving the number of substepping to compute creep after the tightening of a group of tendons.(the default value is 1) For output the table TAB2 contains in addition of input datas following indexes : 'TEMPS' : table object, indexed by integer values, giving all times of phases constructions and phases of tightening tendons. 'DRETRAIT' : table object, indexed by integer values, giving the shrinkage strains for previous times. 'DFLUAGE' : table object, indexed by integer values, giving the creep strains for previous times. 'TABLE_SUITE' : table object which must be given to PASAPAS in order to continue the study. At least the CHARGEMENT object (loads) and the list of computed times have to be modified. Remarks : + all times are in days and have as origin the first phase of construction. + during phases of construction the weight is the only load, then it is necessary to specify RHO as a material property. + To pursue computation you have to : - take the table object given by TAB2.'TABLE_SUITE' (XXX= tab2.'TABLE_SUITE' ;) - define the list of times to be computed after the last time computed in PHASAGE.(XXX.'TEMPS_CALCULES'= ...) - add to the actual loads the new loads. (XXX.'CHARGEMENT' = XXX.'CHARGEMENT' ET NEW_CHA; ) - call PASAPAS ( PASAPAS XXX;)
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