Optimization Method for Solving the Reasonable Arch Axis of Long-Span CFST Arch Bridges

Table 2

Centroid coordinates of the six key sections.

Centroid coordinates	Arch foot	Border of arch girder	L/8 span	L/4 span	3L/8 span	Midspan
X	−251.22	−228.05	−178.75	−128.70	−64.35	0.00
Z	−105.34	−85.93	−51.27	−25.57	−5.07	1.98