Research Article

Bayesian Probabilistic Framework for Damage Identification of Steel Truss Bridges under Joint Uncertainties

Table 3

Five competing model classes used for damage identification.

ModelModel description

M1Simple spatial truss structure model with fully pinned/hinge joints
M2Simple spatial truss structure model but with rigid joint connections
M3The segment connecting truss members and joints steel ball are represented by zero-length elements in OpenSees. The rotational stiffness of the zero-length elements is set equal to  N m/rad
M4The same model as model class 3 but with the rotational stiffness of  N m/rad
M5The same model as model class 3 but with the rotational stiffness of  N m/rad