Static molds – In situ construction engineering type or building type-mold... – Forming building structure
Patent
1988-02-17
1990-04-17
Housel, James C.
Static molds
In situ construction engineering type or building type-mold...
Forming building structure
249 17, 249 44, 249 49, 249153, 249157, 249179, 249182, 249184, 264 32, 425 65, E04G 1120
Patent
active
049173464
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a shuttering or form for erecting structures of any plan shape, any generatrix and possibly changing wall thickness, including a form framework for an inner form and/or an outer form and a plurality of form plates which overlap each other in horizontal direction.
A sliding form for the manufacture of structures of this type is already known. This form includes lifting stands which are slidable on horizontal guides transversely of the wall and a form whose length can be changed and which is adjustable relative to the wall. These lifting stands are constructed similar to a parallelogram with articulated corner points, so that the horizontally extending parts of the lifting stands are always horizontal and the other parts of the lifting stands extend parallel to the inclined wall. Accordingly, the adjustment for the inclination of the form is quite complicated because all lifting stands to be arranged on the circumference of the form must be adjusted in accordance with the appropriate inclination. In addition, it must be taken into consideration that all these lifting stands together with the form are suspended with a concreting platform, so that not only the further conveyance but also the new adjustment after each section of the structure are particularly difficult.
Therefore, it is the object of the present invention to provide an exactly and simply adjustable form which can be adapted after each section of the structure to changing inclinations, changing wall thicknesses, etc.
In accordance with the invention, this object is met by arranging circumferentially closed, force-transmitting support rings which are horizontally spaced apart at the inner form and/or the outer form. Threaded spindles are held in the support rings so as to be slidable in approximately horizontal direction and fixable, wherein one end of the threaded spindles engage the form plates or the form supports resting against the form plates. Between the form plates seen in circumferential direction of the form, web members are provided which engage over the edges of the form plates at the rear sides thereof. In the region between the side edges of adjacent spaced-apart form plates, each web member has on its surface facing the structure a support which corresponds in thickness to the form plates.
The measures according to the invention make possible an exact adaptation of the form to a certain plan shape, to a certain generatrix and to a changing wall thickness because an exact adjustment of the form relative to the support rings is possible. The support rings do not have to carry out a carrying function; accordingly, they do not support the form itself, but rather are suspended from the form and serve only to fix the form plates in the desired position. As a result, a very exact adjustment of the form to various inclinations of the wall to be constructed, to any plan shapes and possibly to changing plan shapes, to constant wall thicknesses or changing wall thicknesses if possible. Also contributing to the simple construction of such a form is the fact that a simple changing of the diameter or the circumference of such a structure and, thus, a corresponding adjustment of the form is possible, because the form plates may have the same size over the entire height of the structure, so that only the web members provided for bridging the spaces between the edges of the form plates must be adjusted. A satisfactory surface of the structure is obtained because the web members have a support which corresponds approximately in thickness to the form plates, the support being provided between the side edges of the form plates on the surfaces of the web members facing the structure. Due to the arrangement of such a support, a simple adaptation to the changing spaces between the edges of the form plates is possible because these supports can be adjusted accordingly. The web members may then continue to engage over the edge portions of the form plates.
The form according to the invention can be used without requiring anchors ext
REFERENCES:
patent: 2742985 (1988-05-01), Mathis
patent: 3252199 (1966-05-01), Bossner
patent: 4374634 (1983-02-01), Ahl
patent: 4540150 (1985-09-01), Tzincoca
patent: 4562989 (1986-01-01), Scheller
patent: 4611784 (1986-09-01), Gallis
Housel James C.
Rund-Stahl-Bau Gesellschaft m.b.H.
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