Abstract:
Deformation and stability of the back soil of an open caisson are very important in pipe jacking construction. Main loads on an open caisson include pipe jacking force, reaction force of back soil, side and bottom friction of open caisson. Forces on rectangular and round open caisson were analyzed and it was found that the front soil may depart from the side wall of an open caisson for a short time when the back soil was compacted till shear failure.