Aiming at the existing situation that it is high difficulty of using cradle casting construction of continue box beam bridge,it introduces the laying out methods of deform detection point and pressure detection point in the construction of the project,and analyses the detection effect.

Key influence factors in hot spot stress FEM analysis;

Weld seam fatigue analysis of locomotive damper hold by hot spot stress method;

Study of fatigue strength assessment of welds based on hot spot stress;

Taking a homogeneous cubic specimen as an isotropic pack composed of typical grained medium units,the variation pattern of stress point distribution in symmetric as well as asymmetric orderly disposed packs under an external concentrated load is analyzed with the help of experiment.

A new method about solving node stress;