Method for Determining Longitudinal Stiffness of Combined Double Thin-Walled Pier Based on Train-Track-Bridge Interaction

Table 1

Suggested values of LSP in the current code.

Span length (m)	Minimum LSP (kN/cm)
L ≤ 20	190
20 < L ≤ 30	240
30 < L ≤ 40	320