This text is started with urban highway bridge Damage identification on the basis of the curvature mode method,then study curvature mode damage index theoretically and go on numerical simulation analysis for a single span reinforced concrete simple bridge with ANSYS software,Point out the characteristic of curvature mode when it is applied to damage identification,and propose curvature mode ratio on this basis,through the numerical simulation we can know that it is a kind of good damage index and have very good development prospects.

Modal analysis technology draws more and more attention in the development of structural damage detection. In this paper, the sensitivities of several multiple damage detection methods were calculated. A cantilever beam of rectangular cross-section was studied by using modal analysis experimentally. The shift of modal frequency caused by structural damage was analyzed. The methods above mentioned were applied to the experiments and their efficiency were demonstrated through several damage simulations. Principal...

Modal analysis technology draws more and more attention in the development of structural damage detection. In this paper, the sensitivities of several multiple damage detection methods were calculated. A cantilever beam of rectangular cross-section was studied by using modal analysis experimentally. The shift of modal frequency caused by structural damage was analyzed. The methods above mentioned were applied to the experiments and their efficiency were demonstrated through several damage simulations. Principal shortcomings in these methods were also discussed. The results indicated that the strain index is more sensitive to damage than the displacement one for bending structures.

Modal pushover analysis (MPA) is an improved pushover analysis procedure based on structural dynamics theory.It not only retains the conceptual simplicity and computational effectiveness of the procedure with invariant force distribution,but also provides superior accuracy in estimating seismic damage on buildings.On the basic of MPA procedure,combined with the approach proposed by A.Ghobarah for the assessment of the damage index for multi-story buildings by using results of twice pushover analyses,a modal...

Modal pushover analysis (MPA) is an improved pushover analysis procedure based on structural dynamics theory.It not only retains the conceptual simplicity and computational effectiveness of the procedure with invariant force distribution,but also provides superior accuracy in estimating seismic damage on buildings.On the basic of MPA procedure,combined with the approach proposed by A.Ghobarah for the assessment of the damage index for multi-story buildings by using results of twice pushover analyses,a modal damage index is proposed in this paper.

Damage identification is one of the important tasks of comprehensive monitoring system of large-scale bridge.This text is started with urban highway bridge Damage identification on the basis of the curvature mode method,then study curvature mode damage index theoretically and go on numerical simulation analysis for a single span reinforced concrete simple bridge with ANSYS software,Point out the characteristic of curvature mode when it is applied to damage identification,and propose curvature mode ratio on this...

Damage identification is one of the important tasks of comprehensive monitoring system of large-scale bridge.This text is started with urban highway bridge Damage identification on the basis of the curvature mode method,then study curvature mode damage index theoretically and go on numerical simulation analysis for a single span reinforced concrete simple bridge with ANSYS software,Point out the characteristic of curvature mode when it is applied to damage identification,and propose curvature mode ratio on this basis,through the numerical simulation we can know that it is a kind of good damage index and have very good development prospects.