Parabolic Method
Settlement of terrain behind the shoring structure is calculated according to the following formula in case of parabolic method:
where: | δmax | - | maximum settlement |
sw | - | area formed by deformed structure and un-deformed structure | |
x0 | - | range of settlement | |
δ(x) | - | settlement at each point within the range of settlement x0 in distance x | |
x | - | distance between the calculation point and the edge of the foundation pit | |
δw1 | - | horizontal displacement at the top of the structure | |
δw2 | - | horizontal displacement at the bottom of the structure |
Note: δmax is calculated from Peck theory, while δ(x) is assumed as a parabolic curve. It’s obvious that the maximum value of δ(x) is not equal to δmax, but the maximum settlement is still considered as δmax.
Note: The calculation method for the range of settlement x0 is the same as in the case of triangle method.