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Analysis of Glulam Lattice Dome

by S. M. Holzer, Virginia Polytechnic Inst &, State Univ, United States,
C. Y. Huang, Virginia Polytechnic Inst &, State Univ, United States,
J. F. Davalos, Virginia Polytechnic Inst &, State Univ, United States,
J. R. Loferski, Virginia Polytechnic Inst &, State Univ, United States,



Document Type: Proceeding Paper

Part of: Structural Design, Analysis and Testing

Abstract:

Glued-laminated timber (glulam) domes have become competitive in the engineering of large-span roof structures. Three-way glulam grid domes, such as the Triax and Varax domes, are particularly well-suited for glulam construction because the members lie on great circles and, thus, have the same radius of curvature. The curved members are interconnected by patented steel hubs. The restraints offered by these connectors are the major differences in the designs of the Triax and Varax domes. The domes rest on tension rings made of steel or reinforced concrete. Because of their economy and acoustic quality, Triax and Varax domes are widely used for multipurpose facilities involving sports, recreational, and social activities. The purpose of this paper is to report on a project that was initiated to formulate a finite element method of analysis that can predict the complete structural response of glulam space frames and lattice domes up to collapse.

Subject Headings: Domes (structure) | Laminated materials | Finite element method | Wind loads | Seismic loads | Dynamic structural analysis | Wood structures

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