Computation of Rayleigh Damping Coefficients for the Seismic Analysis of a Hydro-Powerhouse

Table 2

Peak accelerations of typical points determined by different methods (m/s²).

Node	Direction	Modal method	Case	Case	Case	Case	Case	Case	Case
2889		0.482	0.423	0.732	0.623	0.603	0.424	0.483	0.535
		1.368	1.239	1.835	1.680	1.675	1.245	1.437	1.617
		0.442	0.380	0.834	0.725	0.707	0.383	0.558	0.641
6636		2.947	2.193	5.407	4.665	4.642	2.208	3.133	4.108
		2.186	1.996	2.898	2.522	2.595	1.999	2.112	2.357
		1.360	0.852	2.333	2.031	1.929	0.860	1.559	1.706
8079		3.971	2.807	7.310	5.983	5.944	2.829	4.179	5.139
		4.163	3.457	4.971	4.902	4.913	3.475	3.892	4.831
		2.844	1.534	4.898	4.459	4.354	1.555	3.395	3.901
8088		1.919	1.541	3.349	2.999	2.989	1.551	2.212	2.707
		1.864	1.744	2.757	2.421	2.465	1.747	1.811	2.239
		1.167	0.792	1.703	1.556	1.534	0.800	1.233	1.422
8255		2.830	2.141	5.207	4.501	4.483	2.156	3.030	3.971
		2.168	1.967	2.955	2.557	2.622	1.971	2.077	2.370
		1.666	1.060	2.536	2.301	2.243	1.069	1.798	2.060

Note. represents the upstream and downstream direction, shows the direction perpendicular to the stream direction, and denotes the vertical direction.