Numerical Investigation of the Characteristics of the Dynamic Load Allowance in a Concrete-Filled Steel Tube Arch Bridge Subjected to Moving Vehicles

Figure 5

Modal analysis results: (a) first-order transverse bending mode (1^st TBM); (b) second-order transverse bending mode (2^nd TBM); (c) first-order vertical bending mode (1^st VBM); (d) second-order vertical bending mode (2^nd VBM).

(a)

(b)

(c)

(d)