Subway-Induced Vibration Measurement and Evaluation of the Structure on a Construction Site at Curved Section of Metro Line

Table 2

Mean values, standard deviations, and variation coefficients of peak and Rms values of accelerations induced by metros in three directions.

Index		Acceleration (cm/s^2)
		Peak				Rms
Measurement point		W1	W2	W3	W4	W1	W2	W3	W4
Distance to metro line (m)		5	17	26	35	5	17	26	35
X direction	Metro 1	2.749	0.981	0.605	0.771	0.471	0.183	0.107	0.143
	Metro 2	3.525	0.986	1.720	0.453	0.739	0.164	0.354	0.083
	Metro 3	3.413	0.771	0.978	0.421	0.650	0.146	0.187	0.084
	Mean values	3.229	0.913	1.101	0.548	0.620	0.164	0.216	0.103
	Standard deviations	0.420	0.123	0.567	0.194	0.136	0.018	0.126	0.034
	Variation coefficients	0.130	0.135	0.515	0.353	0.220	0.112	0.582	0.328
Y direction	Metro 1	10.798	1.518	0.800	0.363	1.504	0.221	0.133	0.079
	Metro 2	7.366	1.150	1.237	0.746	1.323	0.223	0.249	0.142
	Metro 3	3.524	0.596	0.940	0.739	0.550	0.102	0.197	0.153
	Metro 4	12.754	1.420	0.557	0.395	1.744	0.230	0.132	0.072
	Mean values	8.611	1.171	0.884	0.561	1.281	0.194	0.178	0.112
	Standard deviations	4.057	0.414	0.284	0.210	0.516	0.062	0.056	0.042
	Variation coefficients	0.471	0.353	0.321	0.374	0.403	0.318	0.317	0.374
Z direction	Metro 1	1.794	0.893	0.402	0.265	0.309	0.156	0.077	0.054
	Metro 2	1.610	1.140	0.463	0.538	0.226	0.160	0.097	0.100
	Metro 3	1.841	1.309	0.532	0.609	0.275	0.179	0.099	0.092
	Metro 4	1.457	0.996	0.448	0.508	0.226	0.160	0.100	0.106
	Metro 5	1.666	1.118	0.530	0.508	0.226	0.166	0.102	0.099
	Mean values	1.674	1.091	0.475	0.486	0.252	0.164	0.095	0.090
	Standard deviations	0.153	0.157	0.056	0.130	0.038	0.009	0.010	0.021
	Variation coefficients	0.091	0.144	0.118	0.268	0.151	0.054	0.107	0.232