Effects of Spatially Varying Seismic Ground Motions and Incident Angles on Behavior of Long Tunnels

Table 5

Maximum stresses of tunnel body at different incident angles.

Motion form	Principal stress	0°	30°	45°	60°	90°
Uniform		11.60	10.85	9.24	7.18	7.45
		−11.60	−10.58	−10.02	−8.99	−6.81
Multisupport		17.74	13.92	11.29	8.94	6.66
		−18.84	−15.68	−13.37	−11.16	−8.49