JPS6248020B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a suspended roof type coal storage facility that stores a large amount of coal indoors in order to harmonize with the surrounding scenery, and more specifically, the coal carrying conveyor is elevated and the coal carrying conveyor is elevated. The hanging roof was constructed using the central support supporting the conveyor, and the hanging roof was
The present invention relates to a suspended roof type coal storage facility characterized by a configuration in which multiple HP curved surfaces are connected as one unit.

Conventionally, most coal storage facilities for storing coal indoors have steel or reinforced concrete structures, which have the drawbacks of being too expensive for their intended use and being disadvantageous for increasing the scale of the facility. Another drawback was that the handling of coal loading and unloading was not rational.

Therefore, the object of the present invention is to provide a coal storage facility with a suspended roof structure that is suitable as a large-scale permanent structure, has good construction properties, and is inexpensive. HP curved surface (Hypabolic) that effectively resists vibration and shaking
The object of the present invention is to provide a suspended roof type coal storage facility in which a paroboloridal curved surface (a hollow-shaped curved surface) is used as one roof component, and a plurality of HP curved surfaces are connected in succession.

The next object of this invention is that by making HP curved surfaces two-dimensionally continuous, it is possible to design and construct facilities of any size, and to expand or reduce facilities by adding, reducing, or removing HP curved surfaces as units. The purpose of the present invention is to provide a suspended roof type coal storage facility that can be used to store coal.

Another object of the present invention is to provide a suspended roof type coal storage facility having an advantageous structure for handling coal in and out.

The ultimate object of this invention is to consist of a central column that is erected in a row at a required height and with a specified span, and a suspension cable, a holding cable, and a tie bar that connects the two, and between each span of the central column. It consists of a main girder, a suspension cable, a holding cable, and a tie bar connecting the two, and a sub-girder installed between each central column and sub-girder columns located on the side thereof, and an upwardly convex structure between the sub-girder columns. A boundary structure including holding down cables, side columns and left stay cables to form a boundary curve, a required number of suspension cables each installed in parallel at a required pitch between the main girder and the boundary structure, and adjacent sub-girders. Holder cables are installed parallel to each other at the required pitch between them, and each intersection point with the suspension cable is connected, and a backstay cable is installed in the span extension direction from the central pillars at both ends of the span direction, and the central pillar. On the roof surface of the HP curved surface formed by the boundary cable stretched as the anchoring part of the holding cable at both ends in the span direction, the main girder and sub girder, the boundary structure and the boundary cable, the hanging cables installed thereon, and the holding cable. It consists of the installed roofing materials, an inlet conveyor installed at a predetermined height above the central pillar and almost horizontally in the span direction, and an unloading conveyor installed near the ground level directly below the central pillar. Almost all of the gist of the invention relating to a suspended roof type coal storage facility or the above-mentioned suspended roof type coal storage facility is the main part. To provide a multi-row continuous suspended roof type coal storage facility in which a suspended roof is constructed in which each HP curved surface is one unit and the HP curved surface is continuous in multiple units in two dimensions.

Next, the present invention will be explained with reference to illustrated embodiments.

FIG. 1 shows the first stage of construction of a single-row suspended roof type coal storage facility, which is a first embodiment of the present invention.

The central pillars 2 that support the coal carrying conveyor 1 are arranged in a row with a height of about 30 m above the ground, and have a span of about 40 m to 50 m in the row direction, and are divided equally between them over a total length of about 360 m. Only the number of trees that have been installed has been erected. The upper part of these central pillars 2...
That is, the carry-in conveyor 1 is installed at a height of about 22 m above the ground and substantially horizontally in the span direction. A cover 3 protruding from the ground level as a hat with a chevron-shaped cross section is installed at a location directly below the central pillars 2 in the row direction of the central pillars 2. This cover 3 covers the opening of a dispensing pit 5 (FIG. 2) formed below the ground level, and has slits 4 on both sides in the longitudinal direction that allow coal to enter the dispensing pit 5.
form 4. A coal receiving conveyor 6 communicating with the carrying-in conveyor 1 is installed as a bridge on the ground at a horizontal position approximately in the longitudinal direction of the carrying-in conveyor 1, and communicates with the carrying-in conveyor 1.

Each central support 2... is a pair of two cylindrical members 2.
A, 2a are stood upright approximately in parallel at intervals of about 5 m, and the upper and lower parts of the columns 2a, 2a are connected by connecting beams 2b,
They are rigidly connected at 2b and configured as one combined strut.

Due to its purpose, the carrying-in conveyor 1 must be capable of loading coal evenly and sequentially over the entire length of the central columns 2 in the row direction, and for this purpose, for example, a belt conveyor with a moving tripper may be applied. However, FIG. 2 shows an application example of the shuttle conveyor. That is, rails 1c, 1c are placed on floorboards 1b, 1b facing parallel to each other with an interval such that a telescopically telescopic guide chute 1a can pass therethrough.
A belt conveyor 1e with a length corresponding to about 1/2 of the total length of the rows of central columns 2 is installed on a conveyor frame 1d that moves on the rails 1c, 1c. A guide chute 1a is suspended from guide heads 1f at both ends of the belt conveyor 1e. The floorboards 1b, 1b have their outer edges reinforced by truss beams 7, 7, and are suspended and supported by tie bars 8 connected to hanging ropes 10a in a main girder 10 constructed in the span direction of the central columns 2... ing. Reference numeral 9 in the figure indicates a roof plate installed over the truss beams 7, 7 on both sides.

A continuous delivery conveyor 11 is installed approximately in the center of the bottom of the delivery pit 5 provided below the ground level over its entire length. The dispensing pit 5 is movable back and forth over the entire length thereof, and the slits 4, 4 on both sides of the chevron-shaped cover 3
A cart-type scraping device 12 is installed to scrape off the coal coming in from the coal onto a conveyor 11. The chevron-shaped cover 3 has pillars 3 inclined at a similar angle and arranged at sufficiently large intervals in the longitudinal direction.
It is supported elevated by a..., and slits 4, 4 are formed in the longitudinal direction on both sides thereof.

In this way, the carrying-in conveyor 1 carries the coal 13 evenly over the entire length of the central columns 2 in the column direction, centering on the position of the peak of the cover 3, and builds a large pile of coal 13' as shown in FIG. . On the other hand,
The discharging conveyor 11 collects the coal 13 through the slits 4, 4 to the extent that the scraping device 12 can scrape it off.
are transported one after another to break down the pile of coal 13'. Therefore, when it comes to handling coal, it will be first in, first out. When the pile of coal 13' becomes small, it is scraped into a discharging pit 5 using a bulldozer or the like.

As shown in FIG. 1, the coal receiving conveyor 6 is installed as a bridge by erecting piers 14, and is connected to the elevated delivery conveyor 1. Although not shown, a conveyor for transporting coal unloaded from a ship, for example, is connected to the ground level side end of the receiving conveyor 6.

Next, FIG. 3 shows the second stage of construction, which is one step ahead of the state shown in FIG. 1.

That is, two rows of main garters 10, 10 are installed in parallel between each of the two pillar members 2a, 2a constituting the central pillar 2 between each span of the upper end of the central pillar 2... 2... and a portion lower than the connection position of the main girder 10 and the central support 2.
The sub-girders 16, 16 are located between the sub-girder columns 15, 15 located about 30 m apart on both sides of the rows at right angles, and the sub-girders 16, 16 are arranged between the adjacent sub-girder columns 15, 15. Main boundary cable 17 as a boundary structure forming a boundary curve...
are being constructed respectively. Also, from the upper part of the center columns 2', 2' located at both ends of the row, two long main suspension backstay cables 18, 18 and two short main presser backstay cables are connected in the span extension direction (row extension direction). Stay cables 19, 19 are stretched. Central strut 2...At both ends in the column direction, there are two boundary cables whose tips intersect from the central strut 2' and the sub girder strut 15' on which the sub girders 16' and 16' are constructed, respectively, in an arrangement corresponding to two sides of a triangle. 20 and 21 are stretched as hold-down cables, which serve as the fixing portion of the hold-down cable group described later.

To explain these in more detail, the main girder 10
The suspension cable 10a, which is located above the suspension cable 10a and has a downwardly convex curve, and the presser cable 10b, which is located below and has a curved upwardly convex, are arcuate with opposite signs of curvature, and there is a vertical line between them. A large number of tie bars 10c... are connected in parallel to form a suspension cable 1.
A considerable amount of initial tension (prestress) is introduced into the cable 0a and the holding cable 10b to ensure stability and rigidity against unbalanced loads, dynamic wind loads, etc., and to establish the structure. usually,
The main girders 10 are all of the same configuration with common specifications.

In the sub-girder 16, the upper suspension cable 16a and the lower holding cable 16b are formed in an arc shape with curvatures of opposite signs, and vertical tie bars 16c are connected between them, and the hanging cable 16a and the holding cable 16b are connected to each other. This structure introduces a considerable amount of initial tension into the structure, making it a viable structural form. These sub-girders 16 are also generally all of the same configuration with common specifications.

Therefore, the structural system of the suspended roof of this suspended roof type coal storage facility consists of the central pillars 2, 2, the main girder 10 constructed between them, and the sub-girders 16, 16 constructed laterally from the central pillars 2. It is established assuming a frame.

The main boundary cables 17, 17, which are arranged substantially parallel to the row direction of the central columns 2 as a boundary structure, are installed as holding cables to form an upwardly convex boundary curve between the adjacent sub-girder columns 15, 15. In the middle part, a large number of side columns 22 are installed in parallel and diagonally at required intervals, and the boundary cable 17 is supported at the upper end of the side columns 22.
From the upper end of 5 is the sub-back stay cable 23...
The roof backstay cables 24 are strongly stretched from the upper ends of the side pillars 22, respectively, and a considerable initial tension is introduced into each main boundary cable 17 to complete the boundary structure.

Two main backstay cables 18, 18
is used as an extension of the suspension cables 10a, 10a in the main girders 10, 10, and as an extension of the two main backstay cables 19, 19.
As extensions of the holding cables 10b, 10b in the same main girders 10, 10, anchors are set in the ground and installed strongly.

Boundary cables 20 installed at both ends of the central column in the span direction as anchoring parts for the holding cables described later.
and 21 are HPs that are common to the hanging cables and holding cables described later that form the HP curved cable net.
The holding cables are stretched in an upwardly convex arc shape so as to intersect on the curved surface, and a considerable initial tension is introduced, and the outer ends are firmly installed with anchors in the ground. There is.

Next, Figure 4 shows the third stage, which is one step further in construction from Figure 3. That is, the main girder 10 and the sub girders 16, 1 forming the central large frame
6 and the main boundary cable 17 serving as the boundary structure is considered as one unit, and a cable net of the HP curved surface is being formed.

To explain this in detail, between the holding cable 10b of the main girder 10 and the main boundary cable 17,
A large number of suspension cables 25... are passed through the main girder 10 (or cut into individual unit lengths) approximately parallel to the sub-girder 16 at a pitch of approximately 1.5 m, and are directed downward at a curvature that is approximately the same as the suspension cable 16a in the sub-girder 16. They are constructed parallel to each other in a convex arc shape. Between the suspension cables 16a, 16a of the sub-girders 16, 16 adjacent to each other on the left and right, there is a cable extending approximately parallel to the main girder 10 and the boundary cable 17 through each sub-girder 16 (or as a cable cut into individual unit lengths). A large number of holding cables 26 are connected to the main girder 10 at a pitch of about 1.5m.
The holding cable 10b and the main boundary cable 17 each have an upwardly convex arc shape with a curvature that is substantially the same as those of the holding cable 10b and the main boundary cable 17, and are installed in parallel with each other. These suspension cables 25... and presser cables 26...
A considerable amount of initial tension is introduced, and each intersection of the two is connected to form the roof surface of the HP curved surface. This suspended roof structure has a HP curved surface as one unit, and is formed as a suspended roof in which multiple units are continuous in the same direction as the row of central pillars. Furthermore, cables with common specifications are used and the same configuration is constructed by repeating the same process. Therefore,
The overall length of the central columns 2 in the column direction can be adjusted freely by increasing or decreasing the number of units of the HP curved surface, and doing so will not cause any structural problems.

The cable net of the HP curved surface is formed only by the tension relationship between the cables, but the presence of initial tension has an extremely effective effect on the rigid deformation of the curved surface. In addition, it is stabilized by the stiffening effects of other related structures, so it has a configuration that exhibits high stability and rigidity against unbalanced loads, dynamic wind loads, etc. In addition, the space under this suspended roof is a large space with a high ceiling, which is suitable for storing and handling coal and the like.

In addition, the boundary cables 20 and 21 as anchoring parts located at both ends of the central column in the span direction include suspension cables 25' having the same curvature as the suspension cable 16a in the sub-girder 16, and a holding cable 26 passed through the adjacent sub-girder 16. ′ are respectively fixed, initial tension of the same magnitude is introduced into each, and each intersection point of the cable is connected to form a cable net of the HP curved surface, so as to exert a stiffening effect on the HP curved surface of the adjacent unit. It is composed of

Roofing materials (not shown) such as steel plates, folded plates, or tents are laid on the roof surface formed by the cable net as described above, and thus the coal storage shed is completed.

Note that the opening on the side surface of the outer periphery of the roof surface will be covered with a wall plate, etc., if necessary.

Figures 5, 6, and 7 show an outline of the single-row suspended roof type coal storage facility constructed and completed as described above.

Next, FIGS. 8 to 11 conceptually show the entire suspended roof type coal storage facility with four continuous rows, which is a second embodiment of the present invention.

The configuration of each central support row in this embodiment is almost the same as that in the first embodiment. However, the central pillars 2... are erected in four rows (the number of rows is not limited to this) approximately in parallel with an interval equivalent to about twice the length of the sub-girder 16, and the main girder 10 is The sub-girder 16 is installed between the spans of each row of central columns, and the sub-girder 16 is installed between the central columns 2...
The sub-girder columns 15 located approximately in the center between the rows are commonly used and erected symmetrically, so that a large number of PC curved surfaces are continuous in both the vertical and horizontal directions.
Therefore, it is basically a composite of the single-row structure shown in the first embodiment, and can be constructed in exactly the same way by repeating the construction process of the single-row suspended roof type coal storage facility described in the first embodiment. can.

In the case of this embodiment, the boundary structure formed between the sub girder columns 15, 15 located between the rows of central columns includes the side columns 22, which should support the main boundary cable 17, the roof backstay cables 24, and the sub girder columns 15, 15. The backstay cables 23... are unnecessary, and the main boundary cable 17 becomes only one of the holding cables. Therefore, the sub girder support 15 can be vertically erected. On the other hand, sub-girder struts 1 located on the sides of the central strut row on both sides
In the case of the side boundary structure formed between 5'' and 15'', the side pillars 22 supporting the boundary cable 17...
and a roof backstay cable 24... are installed, and the sub girder support 15'... is installed diagonally at an angle that facilitates the reaction force, and the sub backstay cable 23... is stretched from its upper end. Ru.

FIG. 12 shows a conceptual plan view of coal handling in the second embodiment. The starting end of the coal receiving conveyor 6 is connected to a transport conveyor 30 installed from the unloading area of the port, and on the other hand, it is communicated with the shuttle conveyors 1' of each central pillar row by means of trippers or the like. The dispensing conveyors 5 along each central column column have their terminal ends connected to a common discharging conveyor 31. The discharge conveyor 31 may be extended directly to the coal demand section, or may be guided to a shipping bunker or a bunker for trucks or freight cars.

Next, the effects of this invention will be explained.

This invention provides a central pillar having a required height above the ground and having a required number of central pillars erected in a row with a predetermined span;
The main girder consists of a suspension cable, a holding cable, and a tie bar that connects the two, and is installed between each span of the central column.The main girder consists of a hanging cable, a holding cable, and a tie bar that connects the two, and is located on each central column and its side. The sub-girder installed between the sub-girder supports, the boundary structure including side pillars, roof stay cables, etc. to form an upwardly convex boundary curve between the sub-girder supports, and the required distance between the main girder and the boundary structure. The required number of suspension cables are installed parallel to each other at a pitch of
A presser cable is constructed by connecting each intersection with the suspension cable, and a central support at both ends in the span direction,
A backstay cable stretched in the span extension direction, a boundary cable stretched at both ends in the span direction as an anchoring part of the holding cable, a main girder, a sub girder, a boundary structure, a boundary cable, and a suspension cable installed therein; The roofing material attached to the HP curved roof surface formed by holding down cables, the loading conveyor installed at a predetermined height above the central pillar and almost horizontally in the span direction, and the ground directly below the central pillar. The main idea is a so-called single-row suspended roof type coal storage facility consisting of a delivery conveyor installed near the level, that is, a central column that supports the incoming conveyor elevated,
Since it has a highly rational structure that skillfully combines the suspended roof using the central support, the following effects are achieved.

(a) It has a suspended roof structure that is advantageous for handling coal loading and unloading. Moreover, since it forms a column-free space with a high ceiling, which is an essential feature of the suspended roof structure, it has excellent suitability as a large-scale coal storage facility with a shed.

(b) The number of parts used can be reduced and they can be unified.
That is, the roof structure can be made mostly of cables.

(c) Since the components can be modularized, it is advantageous for cost reduction, and the price can be brought close to the level suitable for coal storage facilities. Furthermore, ease of construction and shortening of construction period can be achieved.

(d) Since the suspended roof is formed by a cable net with a HP curved surface as one unit, it can ensure stability and rigidity against unbalanced loads and dynamic wind loads. That is,
Since the HP curved surface has been established as a structural form that effectively resists wind blow-up, vibration, and shaking, it is suitable for use as a large-scale permanent suspended roof structure, and is suitable for use as a coal storage facility. .

Next, this invention has a central pillar of the required height above the ground that is erected in a row with a predetermined span, and a plurality of the same rows as before are erected substantially parallel to each other at a predetermined interval; The central girder consists of a cable, a holding cable, and a tie bar that connects the two, a main girder is installed between each span of the central support for each row of central columns, a suspension cable, a holding cable, and a tie bar that connects the two. A common sub-girder column located approximately in the center between the rows of columns, or a sub-girder installed between the sub-girder columns located on the sides of the row of central columns on both sides and the central column, and a sub-girder column located between the rows of central columns. A boundary structure to form an upwardly convex boundary curve between them, and side columns and roof stay cables to form an upwardly convex boundary curve between the sub girder columns located on the sides of the central column column on both sides. The required number of suspension cables are installed in parallel at the required pitch between the main girder and the boundary structure or the side boundary structure, and the required number of suspension cables are installed in parallel at the required pitch between the adjacent sub-girders. , and a presser cable installed by connecting each intersection with the suspension cable, a backstay cable stretched in the span extension direction on the center column at both ends of each row in the span direction, and the A roof attached to the roof surface of the HP curved surface formed by the boundary cable stretched as the anchoring part of the holding cable, the main girder and sub girder, the boundary structure or side boundary structure, each boundary cable, the hanging cables installed thereon, and the holding cable. The roofing material and the central pillar of each row are placed at a predetermined height position.
In addition, the main feature is a multi-row continuous suspended roof type coal storage facility consisting of an inlet conveyor installed almost horizontally in the span direction, and an outlet conveyor installed near the ground level directly below the central column of each row. In other words, since the HP curved surface is taken as one unit and a large number of them are connected in the vertical and horizontal directions to form a suspended roof structure of a desired scale (large scale), in addition to the above (a) to (d), the following effects are achieved.

(e) Although it is a suspended structure, it has a large degree of freedom.

(f) In other words, there is a degree of freedom in which the scale of the facility can be designed and constructed as desired, or the facility can be expanded or reduced by adding to, reducing or removing HP curved surfaces.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the first stage of construction of a single-row suspended roof type coal storage facility, which is the first embodiment of the present invention; FIG. Figures 3 and 4 are perspective views showing further advanced stages of the construction of the previous coal storage facility;
Figure 5 is a partially omitted front view of the completed single-row suspended roof type coal storage facility, and Figures 6 and 7 are -
, - sectional view, FIG. 8 is a conceptually simplified plan view of a four-row suspended roof type coal storage facility which is a second embodiment of the present invention, and FIGS. 9 and 10 are - of FIG.
, - sectional view, FIG. 11 is an enlarged sectional view taken along line XI-XI of FIG. 8, and FIG. 12 is a conceptual diagram of coal handling in the facility of FIG. 8. 2, 2'... Central column, 10a... Hanging cable (main girder), 10b... Holder cable (main girder), 10c... Tie bar (main girder), 10... Main girder, 16a... Hanging cable ( Sub girder), 16b... Holder cable (sub girder), 16c... Tie bar (sub girder), 16, 16'... Sub girder, 15,1
5'...Sub girder strut, 17...Main boundary cable, 25...Hanging cable, 26...Holding cable, 18, 19...Backstay cable, 2
0, 21... Boundary cable, 1... Incoming conveyor, 5... Outgoing conveyor, 24... Roof stay cable.

Claims (1)

[Scope of Claims] 1. A hanging roof type coal storage facility configured as shown in (a) to (l) below. (a) A central pillar with the required height above the ground and a required number of central pillars erected in a line with a specified span; (b) A suspension cable, a holding cable, and a tie bar connecting the two, each span of the central pillar. (c) A sub-girder consisting of a suspension cable, a holding cable, and a tie bar connecting the two, and constructed between each central column and the sub-girder column located on its side; (d) A boundary structure including side columns, roof stay cables, etc. to form an upwardly convex boundary curve between the sub-girder columns, and (e) a boundary structure that is constructed parallel to each other at the required pitch between the main girder and the boundary structure. Required number of suspension cables, (f) Holder cables installed parallel to each other at the required pitch between adjacent sub-girders, and connecting each intersection with the suspension cables in (e) above, and (g) A backstay cable stretched in the span extension direction on the central column at both ends in the span direction, (h) A boundary cable stretched as an anchor for the holding cable in (f) above at both ends in the span direction, and (li) Roofing materials attached to the roof surface of the HP curved surface formed by the main girder, sub-girder, boundary structure, boundary cable, hanging cables and holding cables installed thereon, (v) at a predetermined height position on the central support, and It consists of an inlet conveyor installed almost horizontally in the span direction, and (1) an outlet conveyor installed near the ground level directly below the central column. 2 A hanging roof type coal storage facility configured as shown in (a)′ to (l)′ below. (b)′ A central pillar of the required height above the ground that is erected in a row with a predetermined span and a plurality of similar columns erected approximately parallel to each other at the required intervals, and (b)′ A main girder consisting of a suspension cable, a holding cable, and a tie bar connecting the two, and installed between each span of the central column for each row of central columns; (c)' A hanging cable, a holding cable, and a tie bar connecting the two Therefore, a common sub-girder column located approximately in the center between the rows of central columns, or a sub-girder installed between the sub-girder columns located on the sides of the rows of central columns on both sides and the central column, (d) ′ A boundary structure for forming an upwardly convex boundary curve between the sub-girder columns located between the rows of central columns, and an upwardly convex boundary curve between the sub-girder columns located on the sides of the central column rows on both sides. the side boundary structure including the side pillars and roof stay cables to form the main girder, and the required number of suspension cables installed in parallel at the required pitch between the main girder and the boundary structure or side boundary structure. (F)′ Holder cables are installed between adjacent sub-girders in parallel at the required pitches, and each intersection with the suspension cable of (E)′ above is connected, and (G)′ Each row of A backstay cable stretched in the span extension direction on the central column at both ends of the span, and a boundary cable stretched at both ends of the span in (H)' as an anchorage for the holding cable in (F)' above. (li)′ The roofing material attached to the roof surface of the HP curved surface formed by the main girder, sub-girder, boundary structure or side boundary structure, boundary cable, hanging cables and holding cables installed thereon, and (n) each at a predetermined height position on the central column of the column, and
It consists of an incoming conveyor installed almost horizontally in the span direction, and an outgoing conveyor installed near the ground level directly below the center column of each row.