PLASTIC DEFORMATIONS OF THICK-WALLED CONCRETE TUBES UNDER DYNAMIC INTERNAL PRESSURE.

The first part of the paper deals with the complete limit analysis of thick-walled concrete tubes reinforced on their exterior surface by steel wires and loaded by internal pressure. In the second part an approximate solution is presented for the calculation of permanent displacements when the tube is subjected to dynamic pressure. In this analysis the elastic deformations and the effects of changes in geometry are neglected; the strain-rate sensitivity of steel, however, is taken into consideration.