This paper is to investigate the fracture behavior characteristics of box culvert and incremental crack width of upper slab for the applied loading by the 3-axis loading system. In the 3-axes loading system, loading directions are upper side, left and…
This paper is to investigate the fracture behavior characteristics of box culvert and incremental crack width of upper slab for the applied loading by the 3-axis loading system. In the 3-axes loading system, loading directions are upper side, left and right side which simulate static traffic load and earth pressure, re- spectively. With the applied load, crack patterns are investigated on the upper slab, left and right wall. Espe- cially, on the upper slab, crack width is measured by crack gage. Based on the experimental results, structural internal force indices of box culvert are estimated quantitatively.