JP3814751B2 - Donut-shaped large space roof frame - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention mainly protects the granular material such as coal from the wind and rain when storing a large amount of granular material such as coal along the doughnut-shaped storage ground (stacking part) according to production area and type, It belongs to the technical field of a roof frame suitably constructed to prevent scattering, particularly a donut-shaped large space roof frame in which a three-dimensional effect is exhibited and a load is distributed throughout the frame.
[0002]
[Prior art]
Conventionally, as a facility for efficiently storing a large amount of granular materials such as coal, silos having a roof as disclosed in, for example, JP-A-61-145038 and JP-A-61-18240 are disclosed. Such a storage container is used, a charging conveyor is connected to the roof portion, and a payout conveyor is installed at the bottom of the storage container.
[0003]
The granular material storage facility described in Japanese Patent Application Laid-Open No. 57-85706 is supported by a peripheral foundation at the outer peripheral edge, supported by a single central pillar, and has a cross section between the peripheral foundation and the central pillar. The mountain-shaped roof has a circular plane with the central column as point symmetry. A carry-in loop conveyor is installed on the top of the mountain-shaped roof, an external carry-in conveyor is connected to this, and a scraper and a payout conveyor are installed on the floor.
[0004]
The suspended roof type granular material storage facility described in Japanese Patent Laid-Open No. 58-113455 includes a carry-in conveyor constructed in a straight line on an elevated structure by a plurality of columns built at a constant pitch by an arrangement of two rows of columns. , An external conveyor connected to the carry-in conveyor, a powder storage space immediately below the carry-in conveyor, a payout conveyor installed in the basement, a suspension cable and a presser installed above and below the column in the row direction Consists of a cable and a cable-net-like suspended roof knitted into a “curved curved surface” (HP curved surface) on the basis of a suspension cable laid between the above-mentioned cables and a sub girder support in a perpendicular direction and a holding cable. Has been.
[0005]
[Problems to be solved by the present invention]
A facility that uses a storage container such as a silo disclosed in the above-mentioned JP-A-61-145038, JP-A-61-18240, etc., for example, stores coal in large quantities by sorting by type of production and type. Therefore, a large number of storage containers are required, resulting in an expensive facility. The area occupied by the storage facility is also large and uneconomical.
[0006]
The powder storage facility described in JP-A-57-85706 is advantageous in that the entire floor between the surrounding foundation and the central pillar is a storage space, but the central pillar is the center of the roof load. Since the structure supports the load at a single point, the central pillar has a huge structure, and many support piles are constructed to support the central pillar. As a result, there is a problem that facilities such as a conveyor and a discharge passage necessary as a granular material storage facility cannot be provided around the central pillar.
[0007]
The suspended roof type granular material storage facility described in the above Japanese Patent Application Laid-Open No. 58-113455 is reasonably constructed at first glance, but it is difficult to construct the suspended roof in the field, and a plurality of support columns are used. The storage space is located directly below the carry-in conveyor installed in a straight line on the elevated structure, and a payout conveyor is installed below the storage space. Forced to build and uneconomical.
[0008]
The object of the present invention is to store a large amount of granular material such as coal along a huge donut-shaped storage ground (stacking portion) having a diameter of about 200 m depending on the production area and type. A roof structure that is suitably constructed to protect the granular material from wind and rain and to prevent scattering. Especially, the three-dimensional effect is exhibited by the tension ring on the outer periphery and the compression ring on the inner periphery, and the load is distributed throughout the structure. It is reasonably designed and manufactured in a well-balanced stress state, which reduces the burden of large stress generated by the roof load, and reduces or eliminates the stress burden on the surrounding pile foundation due to thrust force (horizontal force). It is possible to provide a large donut-shaped roof structure that can be used.
[0010]
[Means for Solving the Problems]
As means for solving the above-mentioned problem, a donut-shaped large space roof frame according to the invention described in claim 1 is:
When viewed in plan, the tension ring 1 is provided on the outer peripheral edge, and the compression ring 2 is provided on the inner peripheral edge in a concentric similar arrangement, and the roof frame between the tension ring 1 and the compression ring 2 is formed in a mountain shape in cross section. Is a roof frame that has a donut shape.
The joint beam material 3 forming the above-mentioned mountain-shaped roof frame crosses at right angles to the outer peripheral tension ring 1 and the inner peripheral compression ring 2 in the radial direction of the roof frame whose planar shape forms a donut shape. Each is characterized by being arranged radially by arrangement.
[0011]
The invention described in claim 2 is the donut-shaped large space roof frame described in claim 1, in which braces 12 are incorporated in the planes between the joint beam members 3 forming the roof frame having a mountain-shaped cross section. It is characterized by being.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Figure 1 and Figure 2 illustrates a reference example of a large space roof Frame shaped de donut.
[0013]
When viewed in a plan view as shown in FIG. 1, a tension ring 1 is provided on the outer peripheral edge, and a compression ring 2 is provided on the inner peripheral edge in a concentric similar arrangement. The roof frame between the tension ring 1 and the compression ring 2 is formed in a cross-sectional mountain shape as shown in FIG. 2, and as a result, the planar shape of the large space roof frame is formed in a donut shape. The planar shape of the roof frame shown in FIG. 1 is a regular hexagonal donut shape, but is not limited thereto. A circular shape, an elliptical shape, or a further polygonal shape may be used. 2 is a cone-shaped mountain D formed at a certain angle of repose ψ on the ground when a granular material such as coal, for example, is freely dropped from a hopper on the roof ceiling. It is formed in a similar mountain shape larger than the bottom surface width (about 80 m) and height (about 30 m).
[0014]
The roof structure having a mountain-shaped cross section in FIG. 2 is constructed by assembling the joint beams 3 and 3 in a mountain shape, and the outer outer pillar 4 and the inner inner pillar 5 are respectively built on the column base 6. It has been. An inner ring 7 and an outer ring 8 are provided in a similar concentric arrangement in the horizontal direction on the top of the mountain shape, and the inner ring 7 and the outer ring 8 are connected by a horizontal connecting member 9.
[0015]
As described above, the joint beam material 3 constituting the roof frame having a mountain-shaped cross section has the tension ring 1, the compression ring 2, and the inner ring 7 in the radial direction of the roof frame having a donut shape as shown in FIG. 1. The outer ring 8 and the outer ring 8 are arranged in parallel with each other at a distance of about 9 m to 12 m. A high-rigidity roof frame is constructed by incorporating braces 12 in the plane between the palm beam members 3 and 3.
[0016]
Accordingly, in the case of this embodiment, the load of the joint beam 3 is difficult to transmit as a tensile stress and a compressive stress to the tension ring 1 and the compression ring 2 and the inner ring 7 and the outer ring 8. When the finishing material is stretched, the finishing material may be cut in parallel to the interval between the joint beam members 3 and 3, and processing and attachment thereof are easy. Further, the joint between the joint beam member 3 and each ring member is simple, and its processing and assembly are easy.
[0017]
Next, FIG. 3 shows an embodiment of a donut-shaped large space roof frame according to the first and second aspects of the present invention.
[0018]
The feature of the present embodiment is that the palm beam material 3 forming the mountain-shaped roof frame has a tension ring 1 on the outer peripheral edge and a compression ring 2 on the inner peripheral edge in the radial direction of the roof frame whose planar shape forms a donut shape, and In other words, the inner ring 7 and the outer ring 8 are arranged radially at non-right angles. However, although a right angle communion strictly because of the rafter beam members 3 located at the center of each side approximately regular hexagonal toroidal neutral position as shown in FIG. 3, a first aspect of the present invention, this I will add to my mind that it is an idea that encompasses facts. The construction of the roof frame having high rigidity by incorporating the braces 12 in the plane between the joint beam members 3 and 3 is common to the above-described large embodiments.
[0019]
In the case of the present embodiment, the joint beam material 3 intersects the tension ring 1 and the compression ring 2 and the inner ring 7 and the outer ring 8 at a non-right angle. As a result, the three-dimensional effect is exerted, the load is distributed over the entire roof frame, the effect of reducing the load of the stress generated by the roof load, and the stress load on the surrounding pile foundation by the thrust force (horizontal force) Excellent in reducing effects. However, it is troublesome to process and attach the roof finishing material, and to connect the joint beam material 3 to each ring material.
[0020]
[Effects of the present invention]
According to the donut-shaped large space roof frame according to the first and second aspects of the present invention, a granular material such as coal is stored in a huge donut-shaped storage ground (loading) having a diameter of about 200 m depending on the production area and type. When storing a large amount along the attachment part), it is suitable for protecting the powder and granular material being stored from wind and rain, and preventing scattering, especially by the outer peripheral tension ring and the inner peripheral compression ring. The load is distributed throughout the frame, and it is rationally designed and manufactured in a well-balanced stress state. As a result, the burden of large stress generated by the roof load is reduced, and the peripheral pile foundation by thrust force (horizontal force), etc. It is possible to reduce or eliminate the stress burden on the body.
[Brief description of the drawings]
FIG. 1 is a plan view showing a simplified example of a right half of a reference example of a large space roof frame.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a plan view showing a large space roof frame according to the invention described in claim 1 in a simplified manner with respect to a right half.
[Explanation of symbols]
1 Tension ring 2 Compression ring 3 Jointed beam material 7 Inner ring 8 Outer ring

Claims (2)

When viewed in plan, a tension ring is provided on the outer peripheral edge, and a compression ring is provided on the inner peripheral edge in a similar concentric arrangement, and the roof structure between the tension ring and the compression ring is formed in a cross-sectional mountain shape. It is a donut-shaped roof frame,
The joint beam members forming the above-mentioned mountain-shaped roof frame are arranged so as to cross the non-right angle with respect to the outer peripheral tension ring and the inner peripheral compression ring in the radial direction of the roof frame whose planar shape forms a donut shape. Large donut-shaped roof structure, characterized by being installed radially. Characterized in that the brace is built into the plane between the mutual rafter beam members to form a cross section chevron-shaped roof Frames, large space roof Frame toroidal according to claim 1.

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