RO129881A0 - Flexible semi-cylindrical joint for a geodome structure - Google Patents

Flexible semi-cylindrical joint for a geodome structure Download PDF

Info

Publication number
RO129881A0
RO129881A0 ROA201400340A RO201400340A RO129881A0 RO 129881 A0 RO129881 A0 RO 129881A0 RO A201400340 A ROA201400340 A RO A201400340A RO 201400340 A RO201400340 A RO 201400340A RO 129881 A0 RO129881 A0 RO 129881A0
Authority
RO
Romania
Prior art keywords
geodome
joint
semi
flexible
semicylindrical
Prior art date
Application number
ROA201400340A
Other languages
Romanian (ro)
Inventor
Vasile Grecu
Vasile Cristian Grecu
Liviu Mocrei
Mircea Horea Tierean
Emil Stoica
Marian-Gabriel Miron
Angela-Lucica Sirbu
Sorin Andrei Bota
Ioan Ţoţu
Octavian Grecu
Dinu Covaciu
Original Assignee
Red Dome Shetler S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Red Dome Shetler S.R.L. filed Critical Red Dome Shetler S.R.L.
Priority to ROA201400340A priority Critical patent/RO129881A0/en
Publication of RO129881A0 publication Critical patent/RO129881A0/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32Arched structures; Vaulted structures; Folded structures
    • E04B1/3211Structures with a vertical rotation axis or the like, e.g. semi-spherical structures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32Arched structures; Vaulted structures; Folded structures
    • E04B2001/327Arched structures; Vaulted structures; Folded structures comprised of a number of panels or blocs connected together forming a self-supporting structure
    • E04B2001/3276Panel connection details
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32Arched structures; Vaulted structures; Folded structures
    • E04B2001/3294Arched structures; Vaulted structures; Folded structures with a faceted surface

Abstract

The invention relates to a semi-cylindrical flexible joint for a geodetic structure, and to a method for achieving this joint. According to the invention, the joint according to the invention is made between two module members having their entire lengths formed along a semicylindrical shape of concave, convex, convex radial shape in contact, the assembly of the module elements between them being achieved by tightening the sides ) adjacent to some clamping elements (). The method according to the invention consists in that, in the pre-assembly phase, the clamping elements () of the contacting sides () are clamped in an intermediate position so that, after fitting all the module elements, they self-locate on a sphere by the natural tendency of the minimum effort, taking over and redistributing equally to all the elements the modulus of the execution imprecision, after which all the links are stiffened by the final clamping of the clamping elements, the sealing between the two semicylindrical contact surfaces of the sides made with a thin membrane () made of an impermeable elastic material.

Description

The invention relates to a flexible semi-cylindrical joint, for p geodesic structure, and to a method for making this joint. the joint according to the invention is made between two elements-module having sides (M and T) profiled along their entire length according to a semicylindrical shape of radius R, concave, respectively, convex, which are in contact, the assembly of the element between them being realized by tightening the sides. (M and T) adjacent with some clamping elements (1). The method according to the invention consists in the fact that, in the pre-assembly phase, the elements (1) for tightening the sides (M and T) that come into contact are tightened in an intermediate position, so that, after all the elements have been fitted, they will self-position. on a sphere by the natural tendency of the minimum effort, taking and redistributing equally to all the elements-mode the inaccuracies of execution, after which all the connections being rigidified by the final tightening of the elements (1) of tightening, the sealing between the two semicylindrical contact surfaces of the sides (M and T) being made with the aid of a thin (2) membrane, made of a waterproof elastic material '.
Claims: 7
Figures: 7
.......: · λ cx.
,. ·· <··.> .. \ ._.? · </ ':' X
, ... ^ .. \ · ''; x
Fig. Takes
Fig. 2
Starting from the date of publication of the patent application, the application provides, provisionally, to the applicant, the protection granted according to the provisions of art: 32 of the Law no.64 / 1991, except in cases where the patent application has been rejected, withdrawn or Considered As the scope of the protection conferred by the patent application is withdrawn, it is determined by the claims contained in the application published in accordance with art. 23 aiin, (1) - (3).
U 4) ^ €. <'3 Ζ / ό' flexible semi-cylindrical joint for geodesy structures
The invention relates to a geometrical profile and a flexible assembly method for the module elements in the construction of a geodome.
It is well known that the structure of a geodome is trying to reproduce the shape of a spherical dome of polygons (quadrilaterals, pentagons, hexagons), which in turn can be broken down into triangles of various sizes. A construction conceived on such a structure is appreciated due in particular to the advantages offered by the fact that it is a minimum surface that closes a maximum volume as well as due to the advantage of an isotropic structure at the external mechanical demands.
The mathematical procedures for determining the decomposition polygons, the shape, the number and the optimal dimensions of the polygonal and triangular elements are known, depending on the dimensions and conditions of the requested location, the destination of the construction. The way of making the structure is, however, cumbersome due to the angles of jointing the edges, respectively of the faces.
For the practical realization of a construction in the form of a geodome, there are two possibilities of approach: by predefining the angles between the edges in each node of their intersection, using specially constructed connectors (different connectors are known such as. The connector was patented in 2007 by Blair F Wolfram, the conical connector, patented by Richard T. Robinson in 1983, the metallic flower patented by Heather Mărie Hava in 2013, etc.) and the predefined dihedral angles between the girls by making triangular elements (modules) having the matching inclined faces. If for the first method solutions with a high degree of flexibility were found, applicable in various decompositions and triangulations, the second method is little applied because the diversity of dihedral angles between girls raises serious constructive problems.
Generally, most geodesic structures are made on a metal or wooden support frame, connected at the junction of the edges. Most approach the geodome as a structure of connected bars, subsequently covered with various materials and not as a meeting of 3D bodies connected together. The main disadvantage of the structures of this type is given by the assembly method and subsequently by the covering and insulation methods. At the tips special connectors are required and the structure requires a metal or wood frame, over which roofing materials are applied, respectively insulation. This type of structures have a high cost, generally a heavy weight and are sometimes conditioned by the access to the location. installation of machines that allow the material to be handled.
There are also structures with curved decompositions of the spherical dome. One such example is the invention "SYSTEM AND METHOD FOR MODULAR CONSTRUCTION OF A DOME STRUCTURE AND ASSEMBLY COMPONENTS FOR FACILITATING SAME, by Salah ELDELIB, with no. WO 2008/014587 A1. The construction of the structure requires a means of transport as well as an assembly equipment dedicated to the construction. Another example is the invention "MODULAR CONSTRUCTION FOR A GEODESIC DOME", of the inventor James'A Gavette, US Patent No. 5628154. The strength of the presented structure resides in the geodesic form that maintains the spherical shape, but has the disadvantage that the rigid jointing system does not allow a high flexibility, in the case of extreme external conditions.
A closer example of the proposed invention is the invention "Top-down method of assembling dome structures" by inventor James D McCarten, US Patent No. 07228671 which presents an original method of assembling a modular structure formed from the housing of some modules (the inner part and possibly the insulation is mounted
CV 2 O 1 4 - o O 3 4 O - 0 5 -D5- 20K later) using a pulley device. The elements of the module from which the structure is made have the flat joint faces and consequently the predetermined dihedral angles of the modules manufacture (most probably by molding).
The element joining system as exemplified in the above invention, although a simple one, comes with a number of disadvantages. First, it strengthens the structure and makes it more vulnerable to extreme external elements. Another disadvantage is due to the fact that between the planes of two elements - the mode there is a dihedral angle given by the positioning of the peaks of the elements - the module on the surface of the theoretical sphere of the geodome. This dihedral angle must be realized with sufficient precision so that the sides of the two elements-module remain in contact after the assembly of all the elements-module, this condition ensuring first of all the self-support, respectively that all the elements-module take over and transmit the mechanical requests given by the weight of the structure and of the external demands such as the pressure of the wind, the weight of the snow or of the chicory and secondly the condition of tightness. The constructive solution of the analyzed invention has the disadvantage that the dihedral angle between two adjacent modules assembled is predefined constructively at a fixed value that does not allow the angular positioning of the modules under the real conditions of execution and assembly of the construction. This fact is likely to introduce internal stresses in construction since the assembly, which could lead to deterioration of the assembly profile, breakage of the indexing profile, interruption of the transmission path of the mechanical requests from element to element with the overloading of the other elements and destroying the balance of forces in the structure.
Another disadvantage of the assembly system presented above is that for each decomposition (triangulation) chosen for the realization of a geodome, the dihedral angles between the elements of the module differ, so it is not possible to make a typing of these modules, which leads to execution costs. high.
It is an object of the invention to make an assembly between the elements of the module so that it is no longer dependent on the value of the dihedral angle between the planes of two adjacent modules. In this way, it becomes a universal joint for all geodomain modules, regardless of decomposition (triangulation).
Another object of the invention is to realize a profile of the connection between two elements - the way that allows the angular self-positioning of the modules by redistributing and equalizing the angular deviations determined by the imperfections of execution.
Another object of the invention is to realize a profile of the joint between two elements, the way of taking and evenly distributing the mechanical demands of the structure and which at the same time ensure the sealing of the joint.
The flexible semi-cylindrical joint between two modular elements of a geodome according to the invention consists in the processing along the entire length of the joint, of a concave semicylindrical profile.
Two neighboring modules are in solidarity with the elements of assembly-tightening of the sides that come into contact. In this way it achieves a self-supporting construction without the need for interior beams or additional reinforcing ribs.
In the pre-assembly phase, the elements of assembly-tightening of the sides that come into contact are gathered in an intermediate position so that after all the modules are assembled they self-position on the sphere by the natural tendency of the minimum effort, taking over and redistributing equally to all the inaccurate modules. execution, after which all connections will be tightened by the final tightening of the assembly / tightening elements.
CV-201A-00340-0 5 -05- 2014 xl
Self-positioning is possible due to the semi-cylindrical, concavconvex contact surface between two adjacent modules.
To ensure the sealing between the two semi-cylindrical contact surfaces, a thin membrane of a waterproof elastic material such as a rubber band or a plastic sheet is inserted. This membrane will allow in the pre-assembly stage the sliding and self-positioning of the sides of the contact modules, after which, at the final tightening, it will be crushed between the contact surfaces taking over their unevenness and roughness and ensuring on the one hand the sealing and on the other hand an increased adhesion between the sides of two adjacent modules.
The flexible semi-cylindrical joint between the elements - the module of a geodome according to the invention - has the advantage that it eliminates the difficulty of rigorously observing the dihedral angle of joining the elements and the difficulties caused by the imperfections of the surface on which the construction will be located.
Another advantage of the invention is that the semi-cylindrical profile is universally valid for any type element of module element.
The following is an example of embodiment of the invention, without thereby limiting the scope of the invention, in relation to FIGS.
Fig. 1 Overview of a geodome with triangular mode elements
Fig.2 Set of elements-module next
Fig.3 The arrangement of the module elements on the sphere and the dihedral angle between them
Fig. 4 Cross section through the M-profile frame of a module element
Fig.5 Cross-section through the T-profile frame of a module element
Figure 6. The dihedral angle of the concave-convex semicylindrical joint
Figure 7. Semi-cylindrical surfaces machined with longitudinal channels
The elements - the way that give the best approximation to the theoretical spherical surface of the geodome are the triangles (Fig.1, Fig.2). Depending on the application required, the structure can be adapted by changing the number of component modules and the size of the modules. The assembly of the triangles is done by tightening the adjacent sides (Fig. 2) with some clamping elements 1. In these conditions, the dihedral angle a (Fig. 3) appears between the plane surfaces of the elements in the triangular mode.
It can be noticed that for a family of geodomains, using the same element element but increasing or reducing the number of elements -module, and / or modifying proportionally the length of the sides, the dihedral angle included in the range (166 ° -173 °) ensures the framing of the peaks on the surface of the sphere; in addition, at the same geodome the framing in the range Δα = (166 ° -173 °) satisfactorily covers the execution of the elements - the module with economically acceptable accuracy.
The adjacent sides are machined with concave-convex semi-cylindrical coupling profiles denoted "M" (Fig. 4) and "T" (Fig. 5).
The processing of the longitudinal concave surface "M" of radius R (Fig4) is made at a depth h <R, so that the center of the cylinder of radius R is at a distance X

Claims (7)

1. flexible semi-cylindrical joint for a geodome structure characterized in that the contact sides of the two module elements are profiled along their length after a semicylindrical shape of radius R, concave type M, respectively convex type T.
2. flexible semi-cylindrical joint for a geodome structure characterized by the fact that the concave shape is processed on a depth of 76% of the radius R of the cylinder.
3. Flexible semicylindrical joint for a geodome structure according to claims 1 and 2, characterized in that in the pre-assembly phase it allows the angular self-positioning of the modular elements with the equalization of the dihedral angles and the uniform distribution of mechanical stresses throughout the structure.
4. Flexible semi-cylindrical joint for a geodome structure according to claims 1, 2 and 3, characterized in that the entire structure is self-supporting and does not require additional support and consolidation frames.
5. Flexible semi-cylindrical joint for a geodome structure according to claims 1 and 2, characterized in that it allows the creation of a family of geodomes of different diameters with the dihedral angle between two modules between 166 ° and 173 °, using the same module elements but in different quantities .
6. Flexible semi-cylindrical joint for a geodome structure according to claims 1 and 2, characterized in that a waterproof elastic foil for sealing and increasing the adhesion between the semicylindrical surfaces in contact is applied between the two semi-cylindrical coupling surfaces.
7. Flexible semicylindrical joint for a geodome structure according to claims 1 and 2, characterized in that longitudinal, triangular or other channels can be worked on the two semi-cylindrical coupling surfaces, which at the final tightening of the assembly will engage between them. .
ROA201400340A 2014-05-05 2014-05-05 Flexible semi-cylindrical joint for a geodome structure RO129881A0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ROA201400340A RO129881A0 (en) 2014-05-05 2014-05-05 Flexible semi-cylindrical joint for a geodome structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ROA201400340A RO129881A0 (en) 2014-05-05 2014-05-05 Flexible semi-cylindrical joint for a geodome structure
EP15464005.6A EP2942445A1 (en) 2014-05-05 2015-04-08 Semi-cylindrical flexible joint for geodome structures

Publications (1)

Publication Number Publication Date
RO129881A0 true RO129881A0 (en) 2014-11-28

Family

ID=51945589

Family Applications (1)

Application Number Title Priority Date Filing Date
ROA201400340A RO129881A0 (en) 2014-05-05 2014-05-05 Flexible semi-cylindrical joint for a geodome structure

Country Status (2)

Country Link
EP (1) EP2942445A1 (en)
RO (1) RO129881A0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018096414A1 (en) * 2016-11-21 2018-05-31 Santander Lora Gustavo Adolfo Construction system comprising optimised structural elements for the construction of portable prefabricated geodesic domes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE399434A (en) *
US5628154A (en) 1995-08-11 1997-05-13 Gavette; James A. Modular construction for a geodesic dome
GB9607907D0 (en) * 1996-04-17 1996-06-19 Havelock Europa Plc Support post
US7228671B1 (en) 2000-04-25 2007-06-12 Mccarten James D Top-down method of assembling dome structures
US20080022608A1 (en) 2006-07-31 2008-01-31 Altus Engineering, Ltd. System and method for modular construction of a dome structure and assembly components for facilitating same

Also Published As

Publication number Publication date
EP2942445A1 (en) 2015-11-11

Similar Documents

Publication Publication Date Title
US20190093362A1 (en) Rebar Coupler
US9739050B1 (en) Flexible expansion joint seal system
US9322163B1 (en) Flexible expansion joint seal
CA1093608A (en) Simplified pipe coupling
AU2012203424B2 (en) System and method for a supported architectural design
ES2407600T3 (en) bar bearing structure
FI74337B (en) Roerkoppling.
RU2507435C2 (en) Restoration method of existing pipe
US20100126099A1 (en) Modular panel units for constructional purposes
US3692926A (en) Alignable end seals for a splice case
US7819435B2 (en) Rehabilitating pipe for repairing existing pipe and method for repairing existing pipe
US5448865A (en) Panel interlocking means with stiffener
US4143986A (en) Rebar splice
US20060272241A1 (en) Module and frame for cable entries
US20130091691A1 (en) Mechanically Interlocking Frame Assemblies
WO2016005632A2 (en) Device for connecting pillars and beams prefabricated from reinforced concrete with dry joints
US20110232221A1 (en) Buckling restrained brace
US10571066B2 (en) Cladding tube for enveloping an underwater conduit
US3982779A (en) Clamps for joining tubes or tubular structural members
US10330289B2 (en) Cover for the support arrangement of a strip light system and strip light system
KR102001348B1 (en) Manufacturing method of subsection of tower section, tower, and subsection of tower section
JP4515806B2 (en) Rehabilitation of existing pipes
FI87266C (en) Pipe coupling
DK156846B (en) Insulated pipe system, increased underground disposal heating system, and assembly
US4533205A (en) Collapsible wedge for electrical connector