JP2005060927A - Dome house, method of constructing the same, and segment grooving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dome house which is simple in structure, good in workability, and low in costs. <P>SOLUTION: In construction of the dome house, lower ends of five arcuate steel members, for instance, are arranged on a dome circumferential base, and upper ends of the same are converged to a converging member 4 arranged at a dome top portion, to thereby form a birdcaged dome skeleton 6. Then ten curved sectoral segments 3, for instance, each formed of foamed plastic, are circumferentially arranged to form an almost semi-spherical dome wall body 2. At this time, the arcuate steel member 7 is arranged at every other segment 3, for instance, and the dome house 1 is constructed in this manner. The dome house is very simple in structure, easy to construct, and low in construction cost. Further the dome house is relatively easy to transport, and therefore it can be easily constructed even in an area where transportation etc. of building materials are under limiting conditions. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Technical field belonging to the invention]
The present invention relates to a dome house, a construction method thereof, and a segment grooving apparatus used in the dome house.
[0002]
[Prior art]
Conventionally, as a method for constructing a residential dome house, a method of constructing a hemisphere by connecting a plurality of curved fan-shaped precast concretes (Japanese Patent Laid-Open No. 10-61014), a regular octagon as viewed from above. There are various methods such as a method of constructing a wooden dome house by stacking and connecting a plurality of horizontally long plates on each of the eight wall surfaces (Japanese Patent Laid-Open No. 10-317479).
[0003]
[Patent Document 1]
JP-A-10-61014 [Patent Document 2]
JP-A-10-317479 [0004]
[Problems to be solved by the invention]
In general, a dome house is often used for a purpose such as accommodation in a resort area, not a residential use for daily life. For this reason, it is required that the construction is easy, the cost is low, and it is possible to easily construct a place where there is a restriction in carrying in materials or the like. However, the conventional method using a curved fan-shaped precast concrete is heavy, is not easy to transport, is not easy to construct, is expensive, and cannot meet the above requirements. In addition, a wooden dome house construction method in which a large number of elongated plate members are stacked and connected is extremely complicated and cannot meet the above requirements.
[0005]
The present invention has been made in view of the above circumstances, and is a dome house that can be easily constructed even in a place where the construction is easy, the cost is low, and there are restrictions on the carrying-in of materials, and the construction method thereof Another object of the present invention is to provide a segment groove processing apparatus for forming a groove in a foam plastic segment used in the dome house.
[0006]
[Means for Solving the Problems]
The dome house of the invention of claim 1 which solves the above-mentioned problem, a plurality of curved fan-shaped segments made of foamed plastic, continuously arranged in the circumferential direction so as to form a substantially hemispherical dome wall, A plurality of arcuate steel members that form a dome frame with an upper end connected to a converging member provided at the apex of the dome and a lower end fixed to the dome circumferential foundation, and the arcuate steel is on the inner surface side of at least some segments It fits in the steel material fitting groove formed in the meridian direction of the center of the width direction.
[0007]
The dome house of the invention of claim 2 includes at least six curved fan-shaped segments made of foamed plastic, which are continuously arranged in the circumferential direction so as to form a substantially hemispherical dome wall, and a dome apex. Three or more arc-shaped steel members that form a dome framework with the upper end connected to the converging member provided at the upper part and the lower end fixed to the dome circumferential foundation, and the arc-shaped steel is the inner surface side of every other segment It fits in the steel material fitting groove formed in the meridian direction of the center of the width direction.
[0008]
According to a third aspect of the present invention, in the dome house of the first aspect, a reinforcing steel beam for connecting the arcuate steel materials in the horizontal circumferential direction is provided.
[0009]
According to a fourth aspect of the present invention, in the dome house of the first aspect, mortar is applied to the outer surface of the dome wall body formed of the segments.
[0010]
The invention of claim 5 is a dome house construction method for constructing the dome house of claim 1,
For each arc-shaped steel material, the upper end is connected to the converging member provided at the apex of the dome in advance and the lower end is fixed to the dome circumferential foundation to form a birdcage-shaped dome frame, and then from above the dome frame, The segments are connected in the circumferential direction, and the segments with steel fitting grooves on the inner surface are arranged on the arcuate steel so that the arcuate steel fits into the steel fitting grooves. A wall is formed.
[0011]
The invention of claim 6 is a segment groove processing device for forming a steel material fitting groove on the inner surface of a curved fan-shaped segment made of foamed plastic in the dome house of claim 1,
A cutting machine provided with a heating wire shaped to match the shape of the steel fitting groove of the segment is provided movably on an arc-shaped rail arranged along the meridian direction of the inner surface of the segment.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
1 is a front view of a dome house 1 according to an embodiment of the present invention, FIG. 2 is a plan view of the dome house, FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is the top view which showed the dome circumference foundation 5. As shown in these drawings, the dome house 1 includes ten curved fan-shaped segments 3 made of foamed plastic continuously arranged in a circumferential direction so as to form a substantially hemispherical dome wall 2. And 5 arc-shaped steel members 7 which are connected to the converging member 4 provided at the dome apex portion and whose upper end portion is connected to the dome circumferential base 5 and whose lower end portion is fixed to the dome circumferential base 5. The segment 3 of the embodiment is a foamed polystyrene having a thickness of 200 mm, and the arc-shaped steel material 7 is an H-shaped steel having a size of 100 × 100 × 6 × 8 mm.
[0013]
Each segment 3 has a curved fan shape that forms a part of a substantially spherical surface, as shown in a perspective view in FIG. As shown in FIG. 2, for every other five segments 3 of the ten segments 3, as shown in FIG. 5, a U-shaped steel material in the meridian direction in the center in the width direction on the inner surface side. A fitting groove 8 is formed, and the arcuate steel material 7 is fitted in the steel material fitting groove 8 of this alternate segment 3. A steel material fitting segment 3 having a steel material fitting groove 8 is indicated by 3 (A) in FIGS. Further, one of the remaining segments 3 is a door segment 3 (B) having a structure in which the door 10 can be mounted, and three are a window segment 3 (C) having a structure in which the window 11 can be mounted. On both side edges of the segment 3, as shown in FIGS. 5 (a) and 5 (b), stepped portions 3a and 3b are formed in which adjacent ones mesh with each other. A projecting portion 3 c that projects inward is formed at the lower end of the segment 3.
[0014]
The structure of the top of the dome house 1 will be described. The focusing member 4 of the embodiment is made of expanded polystyrene, and as shown in FIG. 6, as shown in FIG. 14 and 15). FIG. 7 is a perspective view showing only the lower divided piece 15. The fitting 16 for attaching the upper end portion of the arcuate steel material 7 to the converging member 4 has a configuration in which a bracket 16b is welded and fixed to the outer periphery of a steel plate ring 16a fitted in the peripheral groove 4a of the converging member 4. A steel plate ring 16a of the mounting bracket 16 is fitted to the outer periphery of the lower divided piece 15, the upper end of the arcuate steel material 7 is connected to the bracket 16b with a bolt 17, and then the upper divided piece 14 is connected from above. The top end of the arc-shaped steel material 7 is sandwiched from above and below by the two divided pieces 14 and 15. Both the split pieces 14 and 15 are preferably joined with an adhesive, for example. Further, a glass 19 is fitted into the upper end surface of the focusing member 4.
[0015]
The base structure of the dome house 1 will be described. As shown in FIG. 4, the leg portions of the segment 3 and the arc-shaped steel material 7 include a ring-shaped dome circumferential foundation 5 in which a plurality of foundation units 21 are connected in the circumferential direction. Get on top. Each base unit 21 is arc-shaped precast concrete. As shown in FIGS. 8 and 9, the base unit main body 22 having a low L-shaped cross section is fixed to the bottom end of the base unit main body 22 with a bolt 24 as shown in FIGS. The presser plate 23 forms a U-shaped groove 21 a together with the base unit main body 22. Adjacent base units 21 are connected to each other by fixing connecting plates 25 and 26 with bolts 27 as shown in FIG.
[0016]
Further, as shown in FIG. 9, a base plate 28 is welded and fixed to the lower end of the arc-shaped steel material 7, and anchor bolts 32 are embedded in a cast concrete foundation 31 cast on the ground. The base unit main body 22 is arranged on the concrete foundation 31, and the base plate 28 at the lower end of the arcuate steel material 7 placed thereon is fastened with the anchor bolt 32 together with the base unit main body 22 with a nut and fixed to the cast concrete foundation 31. Each segment 3 is arranged on the base unit 21 so that the connecting portion of the base unit 21 is in the center (see FIG. 2 and FIG. 4 for comparison). Therefore, the base plate 28 of each arcuate steel material 7 is fixed in a state of straddling the adjacent base units 21. Thereby, the intensity | strength as a structure improves.
[0017]
When constructing said dome house 1, first, the foundation concrete 31 is constructed by digging a circumferential groove in the ground and placing concrete. Next, the foundation unit 21 is arranged in the circumferential direction as shown in FIG. 4 on the placing concrete foundation 31 to install the dome circumferential foundation 5. At that time, adjacent base units 21 are connected by connecting plates 25 and 26 fixed by penetrating bolts 27 (see FIG. 8 (a)). Next, for the five arcuate steel members 7, the base plate 28 at the lower end is placed on the foundation unit 21 while being suspended by a crane, and is fastened and fixed to the anchor bolts 32 with nuts as described above. The part is fixed to the bracket 16b of the mounting bracket 16 fitted to the lower divided piece 15 of the converging member 4 with a bolt 17, and the birdcage-shaped dome frame 6 is assembled. Next, while suspending the ten segments 3 with a crane, the lower end portions are respectively placed in the U-shaped grooves 21a of the base unit 21 and the upper end portions are arranged in the circumferential direction while being collected in the divided pieces 15 on the lower side of the converging member 4. A dome-shaped wall 2 is formed. At that time, every other five segments 3 (3A) having the steel material fitting grooves 8 are arranged and installed on the arc-shaped steel material 7 so that the arc-shaped steel materials 7 are fitted into the steel material fitting grooves 8. Although details are omitted, the door 10 is attached to the segment 3 (3B) for the door, and the window 11 is attached to the segment 3 (3C) for the window. Although not described above, in practice, as shown in FIG. 10, a mortar 34 for fire prevention is applied to the outer surface of the segment 3.
[0018]
In the above embodiment, the dome frame is composed only of the arcuate steel material 7 in the meridian direction. However, as shown in FIG. 11, the reinforcing steel beam 35 that connects the arcuate steel materials 7 in the horizontal circumferential direction is provided as necessary. May be provided. In the illustrated example, reinforcing steel beams 35 are provided at two locations, a lower portion and an upper portion. However, the reinforcing steel beam 35 is not provided in the segment 3 for the door. This reinforcing steel beam 35 is H-shaped steel, angle steel, flat bar, light-weight shaped steel, angle material, and other arbitrary ones. The connection between the reinforcing steel beam 35 and the arcuate steel material 7 may be bolted, but is not particularly limited.
[0019]
By providing the reinforcing steel beam 35 in the horizontal circumferential direction as described above, the strength of the dome frame can be efficiently improved. Further, the steel beam 35 for reinforcement in the circumferential direction can also be used for mounting equipment fixtures in the dome room. Moreover, it becomes effective reinforcement with respect to the segment 3 in which the arc-shaped steel material 7 is not arrange | positioned.
[0020]
12 to 15 show a segment groove processing device 40 for forming the steel material fitting groove 8 in the segment 3 described above. As shown in FIG. 12, the segment groove processing apparatus 40 is configured to connect a cutting machine 42 having a U-shaped heating wire 41 having a shape matching the U-shaped steel fitting groove 8 to be formed in the segment 3 to the segment 3. It is the structure provided so that it could move to the arc-shaped rail 43 arrange | positioned along the meridian direction of an inner surface. As shown in FIGS. 13 and 14, the arc-shaped rail 43 has a configuration in which two rail members 43a having a C-shaped cross section such as a curtain rail are arranged in parallel and welded by a connecting plate 43b. The cutting machine 42 is attached to the lower surface of a box-shaped pedestal 45 so that the U-shaped heating wire 41 protrudes downward, and inside the U-shaped heating wire 41, inside each rail member 43a of the arc-shaped rail 43. It is the structure which provided the caster 46 which drive | works. The casters 46 are attached to attachment plates 48 fixed to two angle steels 47 fixed to the lower surface of the base 45. 49 is a power cord for connecting to a 100V AC power source (the plug at the tip is not shown), 50 is a switch for energizing the heating wire 41, 51 is a volume knob of a built-in power regulator, and 52 is a handle. As shown in FIG. 15, the heating wire 41 has a structure in which a glass coating 41b is formed on the outer periphery of a 2 mmφ iron wire 41a and a nichrome wire 41c as a heating wire body is spirally wound on the outer periphery.
[0021]
When the steel material fitting groove 8 is formed in the segment 3 by the segment groove processing device 40 described above, the arc-shaped rail 43 is fixedly arranged along the meridian direction at the center position in the width direction of the segment 3, and the switch 50 is turned on to turn on the electric power. When the cutting machine 42 that has heated the hot wire 41 is moved along the arc-shaped rail 43 from one end of the segment 3 toward the other end, the portion of the heating wire 41 is melted to form a U-shaped cut, After arriving, when the rectangular portion 3d inside the heating wire of the segment 3 is removed, the steel material fitting groove 8 is formed.
[0022]
According to this segment groove processing apparatus 40, the steel material fitting groove 8 can be efficiently formed by one operator with no difficulty in handling the segment 3 having a large size.
[0023]
It is appropriate that the dome wall 2 of the dome house 1 is composed of ten segments 3 as in the above-described embodiment, and an arc steel material 7 is arranged for every other segment 3. Is appropriate, but not necessarily limited to that case. The number of segments 3 may be 9 or less, or 11 or more. Moreover, not only when making the arc-shaped steel material 7 respond | correspond to every other segment 3, but the arc-shaped steel material 7 can be made to respond | correspond to the appropriate segment 3 as needed. In addition, although the H-shaped steel as in the embodiment is suitable for the arc-shaped steel material, groove-shaped steel or other steel materials can be used, and the steel material fitting groove provided in the segment matches the shape of the steel material. Although it becomes a U-shaped groove | channel, it is not necessarily limited to it.
[0024]
In the present invention, the structure of the converging member for converging the upper end of the arc-shaped steel material is not limited to that of the embodiment, and the design can be changed as appropriate. Further, the dome circumferential foundation is not limited to the configuration of the embodiment. For example, it is also possible to directly fix the base plate at the lower end of the arc-shaped steel material 7 to the concrete foundation placed in the field without using the foundation unit 21 as in the embodiment.
[0025]
【The invention's effect】
According to the dome house of the present invention, the lower end portions of a plurality of arc-shaped steel materials are arranged on the base of the dome circumference, and the upper end portions are converged on a converging member provided at the dome apex portion to form a birdcage-like dome frame, A dome house can be constructed by a simple procedure of arranging a plurality of curved fan-shaped segments made of foamed plastic from the top in the circumferential direction to form a substantially hemispherical dome wall. Construction is very simple, construction is very easy, and construction costs are low. Further, since the structural members themselves, such as the segments made of foamed plastic and the arc-shaped steel material, are simple, the members themselves are inexpensive, and in this respect as well, they can be constructed inexpensively. In addition, since the foamed plastic segment is light and the arc-shaped steel material is not so heavy, it can be transported relatively easily and can be easily constructed even in places where there are restrictions on loading of materials. Thus, it is extremely suitable as an application for accommodation facilities in resort areas.
[0026]
Moreover, according to the structure which arrange | positions an arc-shaped steel material for every other segment like Claim 2, it can satisfy | fill appropriately frame | frame strength and workability | operativity.
[0027]
If the steel beam for reinforcement of the horizontal circumferential direction which connects between arc-shaped steel materials is provided like Claim 3, the intensity | strength of a dome frame can be improved efficiently. In addition, circumferential reinforcing steel beams can be used to install equipment in the dome room. Moreover, when arrange | positioning an arc-shaped steel material for every other segment, it becomes effective reinforcement with respect to the segment by which an arc-shaped steel material is not arrange | positioned.
[0028]
According to the segment groove processing apparatus of the sixth aspect, the steel material fitting groove can be efficiently formed by one operator without difficulty in handling a large segment.
[Brief description of the drawings]
FIG. 1 is a front view of a dome house according to an embodiment of the present invention.
FIG. 2 is a plan view of the dome house of FIG. 1;
3 is a cross-sectional view taken along the line AA in FIG.
FIG. 4 is a plan view of a stage where a dome frame is assembled in the construction of the dome house.
FIGS. 5A and 5B show a foam plastic segment used in the dome house, wherein FIG. 5A is a perspective view of one segment, and FIG. 5B is a horizontal sectional view showing a connection state of the segments.
6A and 6B show the vicinity of the top of the dome house, where FIG. 6A is a plan view of the vicinity of the top without a segment, and FIG. 6B is a cross-sectional view taken along the line DD in FIG. is there.
7 is a perspective view of a lower split piece of a converging member having a split structure in FIG. 6. FIG.
8A and 8B show a basic unit of a dome house, where FIG. 8A is a plan view, FIG. 8B is a front view, and FIG.
FIG. 9 shows the vicinity of the leg portion of the arc-shaped steel material of the dome house, wherein (A) is a longitudinal sectional view and (B) is a CC horizontal sectional view of (A).
FIG. 10 is a partially cutaway front view of the dome house shown with mortar applied to the outer surface of a segment.
FIG. 11 is a view (corresponding to FIG. 3) showing an embodiment in which a reinforcing steel material in the horizontal circumferential direction is provided between arc-shaped steel materials.
FIG. 12 is a perspective view showing a state in which a groove is formed in the segment by a segment groove processing apparatus.
FIG. 13 is a front view of a cutting machine in the segment groove processing apparatus.
14 is a side view of FIG. 13. FIG.
15 is an explanatory diagram of the structure of a heating wire in the cutting machine of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dome house 2 Dome wall body 3 Segment 3a, 3b Step part 3c Protrusion part 3d Rectangular part 4 inside a heating wire Focusing member 4a Circumferential groove 5 Dome circumference base 6 Dome frame 7 Arc-shaped steel material 8 Steel material fitting groove 10 Door 11 Window 14, 15 Split piece 16 Mounting bracket 16 a Steel plate ring 16 b Bracket 17 Bolt 19 Glass 21 Foundation unit 21 a U-shaped groove 22 Foundation unit body 23 Holding plate 24, 27 Bolt 25, 26 Connecting plate 28 Base plate 31 Placing concrete foundation 32 Anchor bolt 34 Mortar 40 Segment groove processing device 41 Heating wire 41a Iron wire 41b Glass coating 41c Nichrome wire 42 Cutting machine 43 Arc-shaped rail 43a Rail material 43b Connecting plate 45 Base 46 Caster 47 Angle steel 48 Mounting plate 49 Power cord 50 Switch 51 Bo Lume knob 52 Handle

Claims (6)

A plurality of curved fan-shaped segments made of foamed plastic that are continuously arranged in the circumferential direction so as to form a substantially hemispherical dome wall, and a lower end portion connected to a converging member provided at the apex of the dome. And a plurality of arc-shaped steel members that are fixed to the dome circumferential foundation to form a dome frame, and the arc-shaped steel materials are fitted into a steel material fitting groove formed in the meridian direction at the center in the width direction on the inner surface side of at least some segments. A dome house characterized by being combined. The upper end is connected to at least six curved fan-shaped segments made of foamed plastic, which are continuously arranged in the circumferential direction so as to form a substantially hemispherical dome wall, and a focusing member provided at the apex of the dome. And three or more arc-shaped steel members whose lower ends are fixed to the dome circumferential foundation to form a dome frame, the arc-shaped steel materials being formed in the meridian direction in the center in the width direction on the inner surface side of every other segment A dome house characterized by being fitted in a fitting groove. The dome house according to claim 1, further comprising a reinforcing steel beam for connecting each arcuate steel material in a horizontal circumferential direction. 2. The dome house according to claim 1, wherein mortar is applied to an outer surface of the dome wall made of the segments. A dome house construction method for constructing the dome house of claim 1,
For each arc-shaped steel material, the upper end is connected to the converging member provided at the apex of the dome in advance and the lower end is fixed to the dome circumferential foundation to form a birdcage-shaped dome frame, and then from above the dome frame, The segments are connected in the circumferential direction, and the segments with steel fitting grooves on the inner surface are arranged on the arcuate steel so that the arcuate steel fits into the steel fitting grooves. A method for constructing a dome house characterized by forming a wall. A segment groove processing device for forming a steel material fitting groove on the inner surface of a curved fan-shaped segment made of foamed plastic in the dome house of claim 1,
A segment grooving device characterized in that a cutting machine provided with a heating wire having a shape matching the shape of the steel fitting groove of the segment is movably provided on an arc-shaped rail arranged along the meridian direction of the inner surface of the segment .

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