Nonlinear Geometric Material And Time Dependent Analysis Of Segmentally Erected Three Dimensional Cable Stayed Bridges PDF Download

A method of analysis and a computer program SPCFRAME (1989) for the material and geometric non-linear analysis of segmentally erected planar prestressed concrete frames including the time-dependent effects due to load history, temperature history, creep, shrinkage, aging of concrete and relaxation of prestress, is described. The program, based on the finite element method using one-dimensional elements, is capable of predicting the response of these structures throughout their various stages of construction and service load history, as well as through the elastic, cracking, inelastic, and ultimate ranges. Changes in boundary conditions and loads, installation, and removal of frame elements and prestressing tendons can be incorporated in the FE model for segmental bridge construction operations. The program SPCFRAME (1989) has been developed by combining the capabilities of PCFRAME (1977) for the linear analysis of prestressed concrete structures erected in one step and of SFRAME (1986) for the time-dependent analysis of segmentally erected prestressed concrete structures with linear elastic material properties. A number of improved non-linear analysis features has also been added to program SPCFRAME (1989) which is available from the authors. Results from a bridge numerical example are presented to illustrate the capabilities of SPCFRAME (1989). For the covering abstract of the Conference see IRRD Abstract No. 807839.