Settlement of terrain behind the shoring structure is calculated according to the following formula in case of parabolic method:
area formed by deformed structure and un-deformed structure
range of settlement
settlement at each point within the range of settlement x0 in distance x
distance between the calculation point and the edge of the foundation pit
horizontal displacement at the top of the structure
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: Calculation method for the range of settlement x0 is as same as in case of triangle method.