Assessing the Open Trenches in Screening Railway Ground-Borne Vibrations by Means of Artificial Neural Network

Table 10

Percentage of contribution to the attenuation of the velocities—vibration-sensitive site.

Attenuation ratio for horizontal velocities		Attenuation ratio for vertical velocities
Parameters	Percentage of contribution	Parameters	Percentage of contribution
𝑑	34.00%	𝑑	35.00%
𝑑/ℎ	27.00%	𝑑/ℎ	22.50%
𝑉𝑠	17.00%	𝑉𝑠	16.00%
ξ	14.00%	ξ	15.50%
𝑙	5.00%	𝑙	8.00%
𝑤	3.00%	𝑤	3.00%