.. _U4.42.04:

**u4.42.04** Macro-command DEFI_CABLE_BP
=========================================


.. _DébuBut:

 **Summary**

The objective of this command is to calculate the initial tension profiles along the prestress cables of a concrete structure. The calculation data are the tension applied to the ends and other characteristic parameters of the anchors and materials. The relationships used are those prescribed by BPEL 91 or ETCC. It also makes it possible to create kinematic relationships between cable nodes and the concrete nodes in which it is immersed.

The cabl_precont concept produced can then be used:


* or by the operator AFFE_CHAR_MECA [:ref:`U4.44.01 <U4.44.01>`] operand RELA_CINE_BP to define the mechanical loads linked to the presence of the cable (kinematic relationships and/or tension in the cables) .These loads will be taken into account by the operator STAT_NON_LINE [:ref:`U4.51.03 <U4.51.03>`];


* or by the operator CALC_PRECONT [:external:ref:`U4.42.05 <U4.42.05>`] for gradual tension of the cables and the possibility of phasing;


* or by the operator DEFI_GROUP (CREA_GROUP_NO/OPTION = 'RELA_CINE_BP') to create groups of nodes corresponding to the links created and to allow a visual verification of these kinematic relationships.

Produces a cabl_precont Data Structure.


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Syntaxe
    Op_randes
    Compl_ment_th_orique___estimation_des_pertes_de_tension_dans_un_c_ble_de_pr_contrainte_suivant_les_prescriptions_du_BPEL
    Compl_ment_th_orique___estimation_des_pertes_de_tension_dans_un_c_ble_de_pr_contrainte_suivant_les_prescriptions_de_l_ETCC
    Exemple