BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to geodesic dome structures and more particularly to a system of prefabricated panels for construction of geodesic dome structures. 2. Description of the Prior Art
Since the geodesic dome structure was developed by R. B. Fuller and disclosed in U.S. Pat. No. 2,682,235, many techniques and systems have been developed and proposed for construction of domes. While the geodesic dome has inherent advantages in efficiency of use of space and in the strength of the structures, domes do not lend themselves readily to conventional construction methods. Domes have been constructed with panels having wood framing and plywood sheeting. The time and labor required for this construction is relatively high, and the materials are not fireproof. Thus, interest has developed in the use of concrete for geodesic domes. For example, in U.S. Pat. No. 4,114,680 to Kelly, a dome-shaped building is shown which requires a supporting framework with an inside shell formed of concrete mesh and reinforcing members and an outside shell spaced from the inside shell. A rather complex structure is required, and the desirable goal of low-cost construction is clearly missed. Dickens et al in U.S. Pat. No. 4,094,110 describe a better structure having panels of expanded polystyrene from which dome-type buildings can be constructed. The outer surface of the panels is covered with wire mesh, and thin metal strips are bonded to the front and back of the panels, along the edges. The panels are assembled to form a desired structural form with the panels joined together by screws through the metal strips. The wire mesh is then covered with concrete or a similar material by spraying or troweling. The interior surfaces are then covered with plaster, concrete, or other finishing materials. As may be recognized, the Dickens et al system requires extensive on-site construction. In U.S. Pat. No. 4,330,969 to Quaney, molding of structural panels in a uniform or modularized size is taught. The panel requires a base portion and a flange around its periphery. The panels are assembled to form geodesic domes and other structures in a flange-to-flange manner and secured by fasteners or by bonding. Although the Quaney panels may provide insulating qualities, a structure fabricated from such panels would lack the strength of a concrete structure. Hewitt describes, in U.S. Pat. No. 2,223,418, a concrete dome structure. The dome is constructed with precast sections having concentric rows of slab sections, with the outer edge of each row overlapping the inner edge of the next row. Since the adjacent precast sections must interlock, a very large number of different size and shape slabs would be required and the system would lack versatility. Furthermore, no inherent insulation is provided.
Thus, the prior art fails to provide a flexible system for prefabricating geodesic dome panels having high insulating capabilities which have finished outside coatings and interior finishing and which can be assembled on-site with minimum labor and material.
SUMMARY OF THE INVENTION
My invention is a geodesic dome assembled from prefabricated panels having a triangular shape. Each panel comprises a core of expanded bead polystyrene. The core may be of any desired thickness, although I find that six inches to nine inches in thickness is generally suitable. The surface which will face the interior of a building has bonded to it gypsum board, paneling, or other type of wall forming material. The outer surface of each panel is covered with a wire mesh embedded in fiber-reinforced concrete or other cementitious material. The edges of each panel are trimmed at the appropriate angle so that the panels will fit together.
The cementitious layer on the outer surface of the panel extends to within a few inches of the edges of the panel, while the embedded wire mesh extends to the panel edge. When the panels are assembled on the site, it may recognized that the joints will show in the form of exposed polystyrene panel borders covered with the wire mesh edges. Additional wire mesh strips are placed in the joint or seam area overlapping the mesh extending from the panel. The seam area is then filled with a concrete or fiber-reinforced cementitious slurry of the same type as the outside covering material. When the slurry cures, the cementitious material bonds to the polystyrene foam and to the existing cementitious surface layers on each panel, and covers the exposed wire mesh which acts as reinforcing. It will also be noted that the wire mesh strips placed over each seam in combination with the mesh extending from the panel coating produces a rib having high tensile, flexural, and compressive strength between each pair of panels.
Preferably, the interior wallboard or other wall covering material extends to the edges of each panel. Thus, when the panels are assembled as described above, only a very small gap will occur on the interior surface. In the case of gypsum board or similar wallboard, these gaps can be covered by taping or similar well known treatments. Alternatively, the interior surface can be painted or wallpapered.
As may now be understood, by the use of my prefabricated triangular shaped panels, a geodesic dome can be constructed by joining of the panels, and seaming the panels together with concrete or other fiber-reinforced cementitious material to form a complete integral seamless dome shell, and in which the bonds between the panels have high tensile, flexural, and compressive strength. A minimum of labor and materials is needed on site for this type of construction. The resulting dome provides a large interior volume with no load bearing walls required.
It is therefore a principal object of my invention to provide a prefabricated building panel having a weather tight surface, high thermal insulation, and an interior wall surface.
It is another object of my invention to provide building panels which have means for joining adjacent panels so as to have a high strength structural rib therebetween.
It is still another object of my invention to provide prefabricated building panels which can be assembled together and joined to form an integral seamless shell in which each panel provides inherent load bearing capability.
It is yet another object of my invention to provide prefabricated building panels having means for creating bonds of high tensile strength when joined to adjacent panels.
It is a further object of my invention to provide a prefabricated building panel system for constructing geodesic domes.
These and other objects and advantages of my invention will become apparent from the following detailed description when read in conjunction with the drawings.
Пространственные и сетчатые конструкции, Вернадский, Шухов, Ладовский, Крутиков, Мельников, Савельев, Мухин, Шевнин, Shevnin, геномная архитектура
четверг, 24 июля 2008 г.
BACKGROUND OF THE INVENTION
dome, spiral, mesh, drop, torus, rhombohedra
|Складной каркас сетчатой оболочки вращения. В.Г.Шухов, Н.П.Мельников|
|Перейти в эту группу|
ДИЗАЙН И АРХИТЕКТУРА
- Структура и топология ДНК
- Российский дом будущего
- e-art dome
- СВОБОДА БЕЗ ВЕЩЕЙ
- arquitectura organica
- Шухов отказал Рокфеллеру и не стал лордом
- thin-shell structure
- строительные технологии и генетика
- OEM is pleased to announce the results of the What if New York City
- Институт истории естествознания и техники РАН, СПб.
- сетчатые системы
- Виртуальный тур по дому будущего от DuPont.
- Фонд Шуховская башня.
- UNHABITAT, house, technology, high-hume
- ▼ июля (20)