Stress variation in pile heads of different rebar configurations:

Due to a requirement in the pole, which should be included in the needle? ) that the iron stand should not be diverted as an angle any more than.... degrees (remember not information).

Try to analyze it using a solid element (8 NODES) instead of concrete and link a button instead of iron. The line is provided by the 31-degree pole in the head of a vertical, compared to a straight-Line Steel Case.

The end of the bottom is not to move in the axis z-direction and axis x is strong at the end of calculating and linearly elastic.

A Cuddle-Year-old result has been very interesting... the iron stands at a 31-Degree Indentation, causing a strong pull in concrete, where the indent means it is very possible that the concrete area is broken, especially in a strong needle. High Impact.

Try comparing it by image.