Dynamic Response Characteristics of the Electric Domain Structure of Ferroelectric Materials to the Surrounding Rock Structure of a Heavy-Duty Railway with a Small-Clearance Crossing Tunnel

Table 4

Characteristic points of single-track tunnel invert structure.

Serial number	Feature point location	C0	C1	C2	C3	C4	Bending moment (KNm)
1	Left sulcus						1.53
2	Line left rail						4.31
3	Line center						8.08
4	Right track						4.31
5	Right sulcus						1.53