JPH0733687B2 - How to build a Tensile Integrity structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for constructing a tensil integrity structure.

(Prior art) Tensile-INTEGRI structure
TY STRUCTURES) is a structure first proposed by R. Buckminster Fuller in the United States. Specifically, it is a columnar member that is a plurality of three-dimensionally arranged compression elements and these columnar members. Is a multi-sided structure including a linear member that is a tension element that is hung on each end of the.

In U.S. Pat. No. 3,063,521 which discloses this tensil integrity structure in detail, a plurality of linear members extending in three directions from one end of a columnar member and an end of the columnar member three-dimensionally intersecting with the linear member or a longitudinal intermediate portion. Since the method of constructing a tensil integrity structure by connecting a linear member to the section is adopted, it is difficult to adjust the tension force of the linear member suspended between the columnar members, and the actual structure There was a problem that it required considerable skill to make a body.

(Problems to be Solved by the Invention) The present invention has been made to solve this inconvenience, and provides a method for constructing a tensil integrity structure that does not require skill to construct the structure. The purpose is to

(Means for Solving the Problem) In order to achieve such an object, in the present invention, a plurality of columnar members, which are compression elements arranged three-dimensionally, and a plurality of three-dimensionally-arranged columnar members are attached to each end. Assuming a tensil integrity structure composed of a linear member that is a tension element, one continuous linear member is prepared, and this linear member is three-dimensionally arranged on both ends of one columnar member and this. A rhombus loop is formed by straddling both ends of another columnar member that intersects, and this rhombus loop is used as a unit loop, while sequentially forming unit loops in adjacent columnar members, all of the columnar members It is characterized by connecting with a continuous linear member, then tensioning both ends of the linear member, and fixing each columnar member and each end and the linear member to make a tensil integrity structure. And

(Example) The features of the present invention will be described with reference to a model constituted by a main rod and a yarn. As shown in Fig. 1, four wooden rods 1,
Two, three, and four are crossed over and placed in an Igata shape. Wooden pole
It has a length dimension of 220 mm and a diameter of 6 mm. As shown in FIG. 2, a groove 7 having a width of 1.5 mm for passing a yarn 10 having a diameter of 2 mm and a hole 8 having a diameter of 1.6 mm are formed at each end of each wooden rod. First, a unit loop AB is made by passing a wool thread 10 through the holes 8 of both ends A and B of the first wooden rod 1, and the grooves 7 of the end portions C and D of the second wooden rod 2 are formed at the left and right ends of the unit loop AB. To form a fitted diamond-shaped loop. After that, the unit loop CDs which are adjacent to each other through the remaining portion of the wool 10 in the holes 8 of the end portions C and D of the wooden rod 2 are formed, and the end portions E and F of the third wooden rod 3 are formed in the left and right half portions of the unit loop CD. After fitting and coupling the groove 7 of No. 3, the remainder of the yarn is passed through the holes 8 of the ends E and F of the third wooden rod 3
After making the EF and fitting and connecting the grooves 7 of the end portions G and H of the fourth wooden rod 4 to the left and right half portions of this unit loop EF, the holes of the end portions G and H of this wooden rod 4 are formed. A unit loop GH is formed by passing the remaining portion of the wool yarn 10 on the unit 8. The grooves 7 of the ends A and B of the first wooden rod 1 are fitted into the left and right halves of the unit loop GH, and the unit loop GH is joined. The starting point and the ending point of the yarn 10 in the 4th wooden rod 4
A toothpick 9 is inserted and fixed in the holes 8 of the end portions G and H, and the toothpicks 9 are inserted in all the remaining grooves 7 and holes 8 to fix the end portions of all the wooden rods to the unit loop. As a result, a cubic polyhedral structure having four continuous wooden rods as a skeleton and 16 continuous yarns connecting the ends of the wooden rods as tension members is obtained with one continuous yarn 10. To be The total length of the loop material of the used yarn is 2400 mm, and the perimeter of the unit loop is 600 mm. If the wool yarn 10 is dyed in red, orange, green, and white for each unit loop, the route through which the wool yarn 10 is stretched by sewing the wooden rods A, B, ... Sometimes convenient.

The above method can be easily carried out even when the number of wooden rods is 5, but when the number of wooden rods is 6 or more, the following method can be used. When the number of wooden rods is 6, as shown in FIG. 3, the wooden rods 1, 2, 3,
To form the tetrahedrons 4, 5 and 6 and arrange the ends of the wooden rods at a distance from each other as shown in the plan view of FIG. 4, first, the end A of the wooden rod 1, A unit loop AB is formed by passing the wool yarn 10 through the hole 8 of B, and both ends of the remaining wool yarn 10 are passed through the hole 8 of the end portion C of the wooden rod 2 and then one end of the wool yarn 10 is inserted into the hole of the end portion D. 8 to make a unit loop CD, pass both ends of the remaining wool 10 through the hole 8 at the end E of the wooden rod 3, and then pass one end of the wool 10 through the hole 8 at the end F to make the unit loop EF. After making both ends of the remaining yarn 10 through the hole 8 of the end G of the wooden rod 4,
One end of the yarn 10 is passed through the hole 8 of the end H to form a unit loop GH, and both ends of the remaining wool 10 are passed through the holes 8 of the end J of the wooden rod 5, and then one end of the yarn 10 is end. A unit loop JK is made by passing through the hole 8 of K, and the both ends of the remaining yarn 10 are the hole 8 of the end L of the wooden rod 6.
After passing through one end of the wool yarn 10 through the hole 8 of the end M to form a unit loop LM, both ends of the remaining wool yarn 10 are crossed and fitted into the groove 7 of the end H of the wooden rod 4. Temporarily fix it with a toothpick 9 to make 6 unit loops in a row.

Next, the grooves 7 of the ends A, B, C, D, F, G, K, and M of the wooden rod are fitted and joined to the nearest unit loop, and the grooves 7 and holes 8 at all the ends are connected. Insert the toothpick 9 to fix it in place in the unit loop, and give the woolen thread 10 a tension 6
The wooden rod is suspended in the air and surrounded by 24 tension members, forming an elastic structure like an ad balloon. This structure is
It will be deformed even if it is pushed slightly, and will be restored immediately when the hand is released, and the inside and outside will communicate with each other, and it will not burst or break. The total length of the loop material of the used yarn is 3000 mm, and the circumference of the unit loop is
It is 500 mm.

Also, replace the wool 10 with a colorless and transparent fishing line, and replace the wooden rods 1, 2,
3. Bonding and fixing with 3, ...
It may be a structure in which the tension member is invisible. Furthermore, the wooden rods, yarns and toothpicks may be replaced by metal tubes and cables or chains and wedges. Further, changing the assembling order, the loop members are first stretched around as shown in FIGS. 1 and 4, and the unit loops are preliminarily coupled and fixed to each other at the fixed points A, B, C. The ends A, B, C, ... Of the wooden rod may be sequentially bonded and fixed to this fixed point. Further, during the assembly, a temporary strut may be erected between the wooden rods to partially make the structure self-supporting. When the structure is formed in a dome shape, a member that crosses the flange member around the opening may be fixed to this.

In the above embodiment, a composite multi-sided structure in which six wooden rods arranged in a regular tetrahedron shape are suspended in air and surrounded by 24 loop members is shown. The loop member in this case has a shape of Rhombic. Octahydrone polyhedron (RHOMBICOCTAHED
RON) is a new thing that should be called. Similarly, if the present invention is applied to regular hexahedrons and regular octahedrons composed of 12 straight rods, and regular dodecahedrons and regular icosahedrons composed of 30 straight rods, the former is 48 straight rods. Rhombic boctahydron structure (RHOMBICBOCTAHEDRON) consisting of tension members between, the latter is continuously converted into Rhombicocide decahydron structure (RHOMBICOSIDODECAHEDRON) consisting of tension members between 120 straight rods, and the number of unit loops and Quantum loop topology (QUANTUM-LOO) in which the number of columnar members is the same and is a multiple of 6 and the number of joints (vertices) is a multiple of 12
A very effective model for P TOPOLOGY) was discovered by the inventors. In this case, it is possible to use a loop member that is expandable and contractible and can be made rigid if necessary, and an adhesive agent may be used for fixing to the straight rod.

(Effect of the invention) It is possible to provide a method for constructing a tensil integrity structure that does not require skill to construct the structure.

[Brief description of drawings]

 FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a perspective view showing the arrangement of the wooden rods 1, 2, 3, 4. FIG. 3 is a perspective view showing another embodiment of the present invention. FIG. 4 is a plan view showing the arrangement of loop members. Explanation of symbols 1, 2, 3, 4, 5, 6 ... Column members (wood rods) A, B, C, D, E, F, G, H, J, K, L, M .. End 7 …… Wooden rod end groove 8 …… Hole 9 …… Stopper tooth 10 …… Linear member (wool)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Akura 6-5, Rakuenen, Itsukaichi-cho, Saiki-gun, Hiroshima Prefecture (56) References Japanese Patent Publication No. 37-5077 (JP, B1)

Claims (1)

[Claims] 1. A tensile strength integrity structure comprising a plurality of columnar members, which are three-dimensionally arranged compression elements, and linear members, which are tensioning elements, which are hung on each end of these columnar members. One continuous linear member is prepared, and this linear member is hung over both ends of one columnar member and both ends of another columnar member that three-dimensionally intersects with this to form a rhombus loop, The diamond-shaped loops are used as unit loops, and all the columnar members are connected by the one continuous linear member while sequentially forming unit loops on the adjacent columnar members, and then both ends of the linear members are tensioned. A method for constructing a tensil integrity structure, characterized in that each end of each columnar member and a linear member are fixed to form a tensil integrity structure.