Calculations are done according to Eurocode design standards. Design tool includes pile sizes RD220…RR/RD1200, all steel grades used for SSAB’s piles and a comprehensive set of sheet pile profiles from several manufacturers. Resistance of a pile wall can be calculated in either elastic state or plastic state. Also, the structure of the pipe piles can be designed as a steel structure (empty steel pipe pile), a concrete filled steel pipe (without composite effect), a composite structure with or without reinforcement bars and a composite structure with an inner steel pipe.
Advanced corrosion reduction possibilities
Often the corrosion rate varies in different depths and also on different sides of a pile wall. To help the optimization of design, there is a possibility to design two cross-sections simultaneously. The diameter of the pile pipe is the same for upper part and lower part of the wall, but the wall thickness and the steel grade of the pile pipe can be changed.
Different corrosion rates during design service life for the pile pipes are considered in the calculations. The corrosion rates can be set separately for the upper part and the lower part of the wall also different corrosion rates can be set for the both sides of the wall and for the inner surface of the pile pipes. Total of six different corrosion rates can be set.
If the corrosion rate has different values at different sides of the wall, the cross-section will be asymmetric. Program calculates the bending resistance of the wall to both directions to consider the effect of different corrosion values to resistance. Beside resistance values, the program calculates the stiffness, the section modulus and the center of gravity for the structural steel part of the cross-section.
The program creates a report which contains the initial data, effective cross-section properties and several resistance graphs for combinations of normal force, shear force and bending moment. If the cross-section has different properties in upper and lower part of the wall, both resistance graphs are shown.