Structural Design and Construction of a Long-Span Prestressed
Concrete Spherical Shell Roof
By K.Hara, M.Awano, H.Tabuchi and K.Hamada
Concrete Journal, Vol.34, No.5, May 1996
- Synopsis
- The New Osaka City Gymnasium (tentative name) is a remarkable structure of no precedent example of this kind with all facilities such as the main and sub arenas built underneath of the park. The roofing of 110m in diameter and 30�E in height that covers the main arena is of prestressed concrete shell dome structure. Approximately 20,000 tonof tensile force was introduced to the lower portion of the shell and the tention ring,that carry the weight of the thick soil layer and plantation on the roof. The shell is designed as a composite structure of precast PC members and cast-in-place concrete. Thisreport is focusing on two items, (1) the measures taken to realize mass concrete placement to form the tension ring that has a large sectional area, and (2) introductionof prestressed force to the tension ring and the lower shell portion.
- Keywords:
- prestressed concrete shell dome structure, large span roof, underground structure, massconcrete, low heat portland cement, great prestressing force
