A simply supported beam has dead load, prestressing and Creep & Shrinkage (CS) at STG1
The internal forces (STG-SUM at the end of STG1: STG1E-SUM) are as below (e.g. node 112 at element 111)
The corresponding stresses are as below (e.g. node 112 at element 111)
The section is as below
Based on the internal forces and section properties extracted from RM Bridge, the stress at bottom center can be calculated as follows
stress due to N, σN=-4275kN / 8.9e5mm2 = -4.8MPa
stress due to Mz, σMz=-3007.3kN*m * 1.333e3mm / 4.293e11mm4 = -9.3MPa
stress due to My, σMy=-26.1kN*m * 0 mm / 1.938e11mm4 = 0MPa
total stress = σN + σMz + σMy = -14.1MPa, I get similar result from other software, like LUSAS, Midas Civil and Sofistik
But RM Bridge shows -30494 (-30.494MPa)
Why?
The TCL files are attached
1.zip