Static structures (e.g. – buildings) – Processes – Fabrication of member – module – etc.
Reexamination Certificate
2001-04-18
2004-03-09
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Processes
Fabrication of member, module, etc.
C052S081300
Reexamination Certificate
active
06701691
ABSTRACT:
TECHNICAL FIELD
This invention relates to a method for constructing a spherical dome, and more particularly to a dome constructing method which is enabled to construct a spherical dome, if relatively high, merely by using a relatively small-sized construction equipment and by assembling it at a relatively low position.
BACKGROUND ART
When a large-sized spherical dome is to be constructed, there may be adopted a method of constructing a polyhedron for a skeleton at first. For constructing this polyhedral skeleton, it is a general method of the prior art to construct a foundation on the land to be scheduled so that the polyhedron for the skeleton is sequentially assembled up on the foundation. As the spherical dome grows the larger (to have the highest point up to several tens meters in recent years), therefore, not only the construction equipment used for the dome construction becomes the larger but also the special works are required at the higher position.
When the works at the high position are increased in the spherical dome constructing method of the prior art, more specifically, large-sized construction equipments are required for building up the scaffold and for lifting and assembling the materials. On the other hand, special considerations have to be taken into the safety management of the workers at the high position. For this dome construction, great quantities and numbers of materials, labors and expenses are required to raise various problems in the drop of efficiency, in the rise of the construction cost and so on.
In order that the workers may go up to the their positions, for example, it is indispensable to construct a long scaffold, and it takes a sequentially longer time to lift the materials to be assembled. Thus, the spherical dome constructing method of the prior art have difficult problems to solve.
DISCLOSURE OF THE INVENTION
This invention relates to a dome constructing method for constructing a spherical dome by assembling a polyhedral skeleton and then by finishing the interior/exterior of the same, as will be specified in the following. Specifically, a plurality of joints, which are to be arranged when assembled at the positions of the individual vertexes of a polyhedral skeleton and each of which has a plurality of joint blades in the directions of the individual sides of the polyhedral skeleton, as extended from said individual vertexes, and a plurality of frame members are adopted as members for constructing the polyhedral skeleton of the spherical dome. Three joints and three frame members are assembled into a triangular frame or a basic unit of the polyhedral skeleton in a grounded state by using the three joints as the vertexes and the three frame members as the individual sides of the triangular frame. In addition, a new triangular frame is assembled around said grounded triangular frame by using similar frame members and joints, thereby to assemble the polyhedral skeleton of a polyhedral cone such as a pentahedral cone or a hexahedral cone, which uses the joints positioned at one vertex of said grounded triangular frame as its vertex and said grounded triangular frame as its one side. When the polyhedral skeleton of a polyhedral cone is thus assembled, a triangular frame different from said triangular frame is newly grounded by turning said polyhedral skeleton. The polyhedral skeleton is subsequently assembled by repeating similar assembling works, wherein the assembled polyhedral skeleton is fixed on the foundation, and the fixed polyhedral skeleton is then finished on its interior/exterior to complete the spherical dome.
According to this invention, more specifically, there is proposed a dome constructing method for constructing a spherical dome by assembling a polyhedral skeleton and then by finishing the interior/exterior of the same, which method comprises the following steps, by using a plurality of joints, which are to be arranged when assembled at the positions of the individual vertexes of a polyhedral skeleton and each of which has a plurality of joint blades in the directions of the individual sides of the polyhedral skeleton, as extended from said individual vertexes, and a plurality of frame members are adopted as members for constructing the polyhedral skeleton of the spherical dome, of steps:
(1) assembling a first triangular frame having three frame members as its sides in a grounded state with a side formed of said first triangular frame being in parallel with the ground surface, by using three joints as vertexes and three frame members to connect the two end sides of the three frame members to the adjoining ones of a plurality of joint blades in said three joints;
(2) assembling a polyhedral cone skeleton of a polyhedron, which has said one joint as its vertex and the number of the joint blades of said one joint as its side number, and which contains a side formed of said first triangular frame as its one side by connecting one-end sides of the remaining individual frame members to at least one of the three joints and connecting the joint blades of the remaining joints to the other end sides of each of said remaining frame members;
(3) assembling a polyhedral cone skeleton, which has said one joint of said grounded triangular frame as its vertex and the number of the joint blades of said one joint as its side number and which contains the side formed of said grounded triangular frame as its one side, by turning the polyhedral cone skeleton assembled at said step (2), to ground a triangular frame other than said first triangular frame so that a side formed thereof may be in parallel with the ground surface, by connecting one-end sides of the remaining individual frame members to at least one of the three joints positioned at the vertexes of said grounded triangular frame, and by connecting the joint blades of the remaining joints to the other end sides of each of said remaining frame members;
(4) assembling a polyhedral cone skeleton which has said one joint of said newly grounded triangular frame as its vertex and the number of the joint blades of said one joint as its side number and which contains the side formed of said newly grounded triangular frame as its one side, by turning the polyhedral skeleton assembled at said step (3), by grounding the triangular frame other than the said first triangular frame and the triangular frame grounded at said step (2), so that the side formed thereof may be in parallel with the ground surface, by connecting one-end sides of said remaining frame members to the individual joint blades of at least one of the three joints positioned at the vertexes of said newly grounded triangular frame, and by connecting the joint blades of said remaining joints to the other end sides of said remaining individual frame members;
(5) assembling the skeleton of the polyhedron which has a plurality of joints as its individual vertexes and a plurality of frame members as its individual sides, by repeating said step (4); and
(6) completing the spherical dome by fixing the skeleton of the assembled polyhedron on the foundation and then by finishing the interior/exterior of the polyhedron.
In said method, the joint blades of the joint are four to six. If there are used a plurality of joints having four joint blades and a plurality of joints having six joint blades, for example, it is possible to construct a polyhedral skeleton having twenty four sides. If there are used joints (twelve) having five joint blades and joints (twenty) having six joint blades, it is possible to construct a polyhedral skeleton having sixty sides.
Here in said dome constructing method, after the polyhedral skeleton having a plurality of joints as its vertexes and a plurality of frame members as its sides was assembled, it can be placed in a hole, which has been excavated to have a depth of several underground floors in the scheduled land, and is fixed in the foundation. After this, the polyhedral skeleton can also be finished on its interior/exterior to complete the spherical dome.
After the polyhedral skeleton having a plurality of joi
Friedman Carl D.
Horton Yvonne M.
Housing Kousan Co, Ltd.
Ladas & Parry
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