Seismic Analysis of Connections of Buried Continuous Pipelines

Table 3

Axial and lateral pipe-soil spring stiffness in the four sites.

Site types	Axial pipe-soil spring stiffness (N/m^2)	Lateral pipe-soil spring stiffness (N/m^2)
I	3.5748 × 10^8	1.8144 × 10^9
II	1.3431 × 10^8	6.5307 × 10^8
III	6.0707 × 10^7	2.9027 × 10^8
IV	1.6365 × 10^7	7.2535 × 10^7