Static structures (e.g. – buildings) – Compound curve structure – Hyperbolic parabloid shape
Patent
1989-05-19
1991-10-22
Raduazo, Henry E.
Static structures (e.g., buildings)
Compound curve structure
Hyperbolic parabloid shape
52 86, E04B 132
Patent
active
050583344
ABSTRACT:
With the conventional radiating truss roof support array, the inner-truss connecting members form multiple complete rings radiating from the central portion of the roof to the periphery at fixed intervals. When tension is applied to the periphery of the roof, a constricting annular compression is generated in each of the concentric rings of inner-truss connecting members. By this mechanism, the tension applied to the periphery is somewhat dissipated, and a less than optimal effect on the curvature of the dome of the roof is achieved by a given amount of tension applied to the periphery. The present invention concerns a radiating truss roof support array constructed in such a manner as to eliminate the above described problem of induced annular constriction in the concentric rings of inner-truss connecting members. This goal is achieved by interrupting the concentric rings of inner-truss connecting members at fixed intervals so that predetermined adjacent trusses are not connected together by the above mentioned inner-truss connecting members. The concentric rings of inner-truss connecting members thus formed are incomplete at predetermined portions and the annular constriction is thus eliminated. Thereby, the tension applied to the periphery of the structure is used to maximum effect in maintaining the curvature of the dome of the roof.
REFERENCES:
patent: 3417520 (1968-12-01), Fink
patent: 4137687 (1979-02-01), Sprang
patent: 4275534 (1981-01-01), Porter
patent: 4697397 (1987-10-01), Okuda et al.
Popular Mechanics, "Domed College Arena Built Without Pillars", p. 74, .COPYRGT.Aug. 1956.
Architectural Record, "Prestressing Prevents Flutter of Cable Roof", pp. 178-181; .COPYRGT., Aug. 1959.
Nikkei Architecture, Jun. 1978, No. 58, "Production of Compact Wheel-Shaped Beam String Structures of Cast Steel".
Quarterly Column, Dec. 1979, No. 75, "Principles and Applications Beam String Structures".
Nakajima Hajime
Nishiya Takayuki
Takahama Yoshihiro
Yamada Toshiyuki
Raduazo Henry E.
Shimizu Construction Co. Ltd.
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