Seismic Analysis of Connections of Buried Continuous Pipelines

Table 6

Influence coefficients of cruciform connection with different branch angles.

Branch angles	Bending strain of cruciform connection (10^−6)	Influence coefficient (δ)
Straight pipe	0	1
90°	65.86	181.46/115.6 = 1.57
60°	49.70	165.30/115.6 = 1.43
45°	32.95	148.55/115.6 = 1.29
30°	16.21	131.81/115.6 = 1.14