Raker design for sheetpile shoring
Raker design for sheetpile shoring
(OP)
We are designing a single line vertical wall shoring system using PZ-22 shoring with two levels of wales and struts. Due to the orientation of the excavation and proposed footing, we have to angle the struts away from the 90 degree orientation in the horizontal direction. We were also planning on angling down the struts in the vertical direction in order to connect the struts to a brace pile a few feet above the ground. With the angled struts in both the horizontal and vertical planes, we get an eccentric loading in the strut. I have been searching for any type of design examples for something similar with no succes. Pile Buck shows the angled rakers but does not give any design information.
With even a slight angle (either horizontal or vertical), we are coming up with a large eccentric moment in the strut. We are not sure if we are not looking at something correctly, or if indeed the induced moment from a small eccentricity is that great.
Any suggestions on designs or books that discuss this would be greatly appreciated.
With even a slight angle (either horizontal or vertical), we are coming up with a large eccentric moment in the strut. We are not sure if we are not looking at something correctly, or if indeed the induced moment from a small eccentricity is that great.
Any suggestions on designs or books that discuss this would be greatly appreciated.





RE: Raker design for sheetpile shoring
Hope this helps, if I'm not understaning your situation, please post more info.
RE: Raker design for sheetpile shoring
RE: Raker design for sheetpile shoring
If you do need to do this then this is a simple frame analysis with a few of the sheet pile columns acting as a column under lateral pressure and the other members forming the other parts of the frame.
Look up the back of the steel code to find typical I values for sheet piles.
RE: Raker design for sheetpile shoring
This thread also has some information on raker braces.
RE: Raker design for sheetpile shoring
RE: Raker design for sheetpile shoring
There is an ecentricity at the wale and a thrust at the pile. Although I have not done a lot of rakers, typically I will run the web flat and flanges horizotal.
sheet pile: http://www.china-sheetpiling.com