Computational Model of Outer Circle and Inner Ellipse Shield Tunnel Lining Structure

Table 4

Dangerous sections of the structure and their internal forces.

Structure type	(°)	M ()	N ()	Q ()
Iso-stiffness shield tunnel linings	0	233.3539	335.9433	0
	45	4.1068	540.5678	−163.7784
	90	−227.5817	686.4683	5.5873
Outer round inner oval shield tunnel linings	0	195.8775	341.6527	0
	45	−3.5322	515.9133	−162.5058
	90	−263.6933	683.1610	6.5911