Mathematical Problems in Engineering / 2018 / Article / Tab 4

Research Article

Tensioning-Phase Box Girder Deformation Prediction Model Based on Ant Colony Algorithm and Residual Correction

Table 4

Diagonal crack grading standard.

Diagonal crack scale Criteria
Qualitative descriptionQuantitative description

1There is no diagonal crack.- -
2There are a few slight diagonal cracks, whose width falls within the allowable range.The crack length is less than 1/3 of the sectional size.
3There are many diagonal cracks, whose width falls within the allowable range.The crack length is between 1/3 and 1/2 of the sectional size.
4There are numerous diagonal cracks, whose width exceeds the allowable range.The crack length is greater than 1/2 of the section size, and the mean crack interval is less than 30cm.
5There are numerous through diagonal cracks, whose width far exceeds the allowable range.The crack width is greater than 1.0mm and the mean crack interval is less than 20 cm.