TENSIONED DOME AND ITS CONSTRUCTION METHOD

摘要

PURPOSE:To provide safety for execution of constructing a tensioned dome by mounting a ring beam on the outer side and hoop beams on the inner side concentrically, and installing ridge beams stretching radially consisting of a lower chord, an upper chord, diagonal, and bundling member from node to node. CONSTITUTION:A ring beam 1 is mounted at the periphery of a tension dome A. Inside of this ring beam 1 hoop beams 2 are mounted multifoldly, concentrically and continuously. Ridge beams 3 are mounted stretching in the radial direction of the tension dome A from node to node of the ring beam 1 and hoop beams 2. Each ridge beam 3 is constructed in an approx. triangular truss beam, and is formed from a lower chord 4, upper chord 5, diagonal 6, and bundling member 7. When a hoop beam is mounted by joining the diagonal 6 with the lower chord 4, the three are fixed by tightening the hoop beam. Thus part of the constituent members are tightened throughout the process, and thereby execution can be done easily and safely.