Abstract: Super-length concrete structure would be acted by large temperature stress in the varied temperature during construction. The stress could cause contracting cracks. To prevent or reduce contracting cracks of concrete plate, prestress produced by expansive concrete in structure is used to resist tensile stress in structure by concrete contraction. Concrete plate can be casted continually due to setting up expansive reinforce concrete tape instead of latercast concrete tape. In this paper,a practical engineering is analyzed according to this theory.