JP2942910B2 - Invert block structure for manhole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for assembling an inverting block divided into two parts in a manhole after the construction, by combining an inverting block provided with a headrace having several types of center lines to form a multi-angled inverting block. The present invention relates to a manhole invert block structure capable of forming a flow headrace.

[0002]

2. Description of the Related Art Conventionally, a first conventional method as a manhole invert block of this type is to set a bottom plate at a place where a manhole is to be constructed, and then to form a block having an inlet and an outlet on the bottom plate. A straight wall, a sloping wall, etc. are sequentially assembled in the height direction. Then, after attaching the inflow pipe and the outflow pipe to the body block, concrete is carried into the manhole with a bucket or the like from the vicinity of the upper opening of the constructed manhole, and the concrete is guided in correspondence with the inflow pipe and the outflow pipe of the body block. We manufacture inverts with waterways by hand. Second
As a conventional method, after placing the bottom plate, on the bottom plate,
Invert blocks 1 provided with water conduits 2 in advance in various directions shown in FIGS. 39a to 39e manufactured in advance in a factory are installed, and then a straight wall is sequentially formed in a height direction from a body block provided with an inlet and an outlet. There is a method of constructing by combining a slope wall and the like. As a third conventional method, a method in which a bottom plate and an invert are integrally manufactured has been commercialized.

[0003]

In recent years, early completion is required for sewerage works such as manholes by excavating roads. In the first conventional method, an invert having a headrace is manufactured manually. Therefore, advanced technology is required,
It takes time and effort. In addition, even if it takes one day for one person, only one place can be completed at last, and there is a problem that work efficiency is poor. In addition, the second conventional method has a problem in that the invert block placed inside is obstructed during the work of attaching the inflow pipe and the outflow pipe, which hinders the work. Furthermore, after installation, it corresponds to the angle of the inlet and outlet arranged at various angles
I ca n't do that. In other words, there is a problem that workability is poor because a body block or an invert that matches the angle between the inflow port and the outflow port must be prepared and reassembled from the beginning. The third conventional method has a problem in that it is not possible to cope with a case where the angle between the inlet and the outlet is changed after the installation of the invert having the ready-made water channel. In addition, when a large number of inverted blocks are manufactured in order to cope with headraces having different angles, there is a problem that the manufacture and management are difficult. Therefore, the present invention has been devised in view of the problems of the above-described conventional technology,
It is an object of the present invention to provide a manhole invert block structure which is easy to assemble and which can correspond to almost all angles of an inlet and an outlet by combining an invert block having a headrace having three kinds of center lines.

[0004]

To achieve the above object, according to the Invention The manhole for invert block structure according to claim 1 of the present invention is insertably bisected from the upper opening of the manhole after construction, Ku On the bottom slab in the body block, two substantially symmetrical invert blocks are combined to form a water conduit corresponding to the inflow or outflow pipe of the body block, and the outer diameter of the invert block is determined from the inner diameter of the manhole. to form the arcuate portion width not small, the fan-shaped gap formed between the facing surfaces, even Ru combining a pair of invert block What happened having a headrace having a center line of a predetermined angle
In the manhole, the center point and both ends of the center line are moved in the manhole, and the gap is opened and closed to form a headrace channel that substantially matches within an allowable range of smooth flow.
I have.

[0005] In the second aspect, the manhole in the first aspect is provided.
In emission Bad block structure, substantially combination a pair of invert block What happened having a headrace having <br/> center line of the straight line of 180 °, moves the center point and two ends of the center line in the manhole, and Open and close the gap to form a waterway that almost matches within the allowable range of smooth flow.
doing.

According to a third aspect of the present invention, there is provided a manhole according to the first aspect.
In the inverted block structure, a pair of inverted blocks provided with a headrace having a center line of a 135 ° curve are provided.
The combination was to move the center point and two ends of the center line in the manhole, and by opening and closing the gap, as characterized by forming a headrace matching substantially within a tolerance smoothly flowing
I have.

[0007] According to a fourth aspect of the present invention, there is provided a manhole according to the first aspect.
In the inverted block structure, the center of the 105 ° curve
A pair of invert blocks equipped with headraces with lines
The center point and both ends of the center line in the manhole.
Movement and opening / closing of gaps allow smooth flow
It is characterized by forming a headrace that almost matches within the enclosure
I have.

[0008]

As shown in FIG. 1, after the manhole 5 is placed on the base 55, the body block 6 is placed on the base 54.
Are mounted, and the straight wall 53a, the inclined wall 52, the straight wall 53b, and the receiving frame 51 are sequentially assembled on the block 6 in the height direction. Next, the invert block 3 is carried in from the upper opening of the built manhole 5, and is assembled in the manhole 5. For example, in the case of the first embodiment shown in FIGS. 7, 8, and 9, the invert block 3b having the center line T2 of 105 ° is combined with the headrace 4 having the center line T4 of 95 °.
In the first stage, the center line A is moved as shown in FIG. Next, FIG.
The upper gap is closed (the lower gap is opened), and at the same time, point D is coincident with point C and point F is coincident with point E. As a result, the waterway having the centerline of 105 ° of the curves D to BF almost coincides with the waterway having the centerline of 95 ° of the curves C to A within an allowable range. As described above, the invert block 3 moves the center points A, B and both ends C of the center line to D, E to F, and opens and closes the gap α1 in the manhole 5 so as to open and close the inflow port 61 and the outflow port. Headrace 4 at 62
Are formed to form a water channel 4, and a gap 7 between the invert blocks 3 is filled with a filler 7 such as concrete or mortar. In addition, the arc block 31 and the body block 6
The mortar 71 is also filled in the gaps. At that time, the headrace 4
And a part of the inverted surface is manually manufactured.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. 1 to 36. In the manhole 5, after a base plate 54 is set on a base 55, a body block 6 is arranged on the base plate 54. The straight wall 53a, the inclined wall 52, and the straight wall 5 on the body block 6.
3b, the receiving frame 51 is assembled by being sequentially assembled in the height direction (see FIGS. 1 and 2). In this case, the diameter of the upper opening of the receiving frame 51 of the manhole 5 is about φ60 cm,
A work step 56 is provided on the straight wall 53a and the inclined wall 52 above the rectangular block 6 in the manhole 5. The invert block 3 disposed on the bottom slab 54 is almost symmetrically divided into two so that it can be inserted from the upper opening of the manhole 5 after being built. And a circular arc portion 31 having substantially the same curvature as the inner diameter of the rectangular block 6 is formed to have a substantially fan shape.

The invert block 3 is provided with a water conduit 4 corresponding to the inflow or outflow pipes 61, 62 of the body block 6.
The invert block 3 forms a certain range of water passages with one product without increasing the number of products, and the formed water passages are formed at an angle necessary for smooth flow. . In other words, in the case of a channel at any angle, by moving the center point and moving both ends, and opening and closing the gap, the channel with a smooth flow is formed so that the center line forms a center line suitable for the channel angle in any state. Form.

For this reason, the outer diameter of the inverting block 3 is made smaller than the inner diameter of the manhole 5 in order to move the inverting block 3 in the manhole 5 so that the center points of the center lines are aligned and the different curves are very close to the same curve. A predetermined width W is formed small and a sector-shaped gap α1 is formed on the opposing surface.
Are formed (see FIGS. 7, 10, and 13).

Further, since the inverting block 3 can support a single product in a range of 30 °, the inverting block 3 is capable of supporting an angle range of 180 ° to 210 ° and an angle range of 180 ° to 150 °. Invert block 3a having a centerline T1 of 180 ° in the centerline of waterway 4
(See FIG. 3) One type is manufactured.

Further, in order to correspond to the curved headrace 4,
The curves of 90 ° to 179 ° have different radii and different center point positions A and B of the respective center lines.
An inverting block 3b (see FIG. 6) having a headrace 4 with a centerline T2 of 105 ° which can cover angles from 0 ° and from 120 ° to 90 °, and from 240 ° to 210 °.
Two types of invert blocks 3c (see FIGS. 4 and 5) having a headrace channel 4 having a 135 ° centerline T3 capable of handling angles up to 150 ° and an angle range from 150 ° to 120 ° are manufactured.

The relationship between the center line of the invert block 3 and the headrace angle in FIGS. It is. The center line of the inverted block 3 is represented by T0. In addition, both ends of the center line of the headrace 4 to be formed are C and E, and the center point thereof is A, and both ends of the centerline of the headrace 4 of the invert block 3 to be used are D and F and the center point thereof is B. explain.

To be more specific, FIGS. 7, 8 and 9 showing the first embodiment show a 95 ° center line using an inverting block 3b having a headrace 4 having a 105 ° center line T2. Forming a headrace channel 4 of T4;
FIG. 7 shows the initial arrangement state of the inverting block 3b in the manhole 5, FIG. 8 shows the state when the center point is moved from B to A, and FIG. 9 shows the state when the lower gap α1 is opened as shown by the arrow. It represents the state of.

FIGS. 10, 11, and 1 showing the second embodiment.
2, 23, FIGS. 34, 35 and 36 of the detailed description show 105 °
Is formed by using the inverting block 3b formed with the water conduit 4 having the center line T2 of 90 °. 10 and 34 show the initial arrangement state of the inverted block 3b in the manhole 5, FIG.
35 is a state when the center point is moved from B to A, FIG.
2 and 36 show the state when both ends D are moved to C and F is moved to E and the lower gap α1 is opened at the same time, and FIG. 23 shows the completed state.

FIGS. 13, 14, and 1 showing a third embodiment.
5, 21 and FIGS.
3 is a 120 ° center line T using an inverting block 3b formed with a headrace channel 4 having a 105 ° center line T2.
6 to form the water conduit 4. 13 and 31 show the initial arrangement state of the inverting block 3b in the manhole 5, FIGS. 14 and 32 show the state when the center point is moved from B to A, and FIGS. Is moved to E, and at the same time, a state when the upper gap α1 is opened is shown. FIG. 21 shows a completed state.

FIG. 16 showing the fourth embodiment is similar to FIG.
Invert block 3 with headrace 4 at centerline T1 of °
It is a top view at the time of forming 180 degree water conveyance channel 4 by combining a.

FIG. 30 showing the fifth embodiment is an application example of the first embodiment, in which the center line of the inverting block 3a of the center line T1 of 180 ° is slightly shifted, and the headrace of the center line T8 of 165 ° is shown. FIG. 4 is a plan view in the case where No. 4 is formed.

FIGS. 17, 27 and 2 showing the sixth embodiment.
8 and 29 are plan views of a case in which the headrace channel 4 having a 150 ° centerline T7 is formed using the invert block 3a having a 180 ° centerline T1. FIG. 17 is a completed state, FIG.
Shows the initial arrangement state of the inverting block 3a in the manhole 5, FIG. 28 shows the state when the center point is moved from B to A, FIG. 29 shows both ends D being moved to C and F being moved to E,
At the same time, the state when the lower gap α1 is opened is shown.

FIG. 18 showing the seventh embodiment is similar to FIG.
Using the inverted block 3 with the center line T3c of 15 °.
It is a top view at the time of forming the headrace 4 of the center line T7 of 0 degree.

FIG. 19 showing the eighth embodiment is similar to FIG.
13 using the inverted block 3c of the center line T3 of
It is a top view at the time of forming the headrace 4 of the center line T3 of 5 degrees.

FIG. 20 showing the ninth embodiment is shown in FIG.
Using the inverted block 3 of the center line T3 of 120 °.
It is a top view at the time of forming the headrace 4 of the center line T6 of (degree).

FIG. 22 showing the tenth embodiment is shown in FIG.
10 using the inverted block 3 with the center line T3 of 5 °.
It is a top view at the time of forming the headrace 4 of the center line T6 of 5 degrees.

As a result of the experiment, the range in which the center line of the curve changes in the manhole 5 is from 90 ° to 180 ° from the table of FIG.
In °, it is 41.4% of the radius and 4.6% per 10 degrees of angle (see FIG. 25). Therefore, the angle 15
To change the degree, 4.6 x 1.5 is 6.9% of radius
By moving, the points A and B can be matched. In order to match the points C and D and the points E and F with a change in the angle of 15 degrees, the sector-shaped gap α1 should be opened by 15 degrees. Examples of calculations for the first manhole, the second manhole, and the third manhole are: In the case of the first manhole with an inside diameter of 900 mm, point A,
In order to match the point B, a radius of 450 × 0.069 =
A movement of 31.0 mm is required. B. In the case of No. 9 manhole with an inner diameter of 750 mm, point A,
In order to match point B, a radius of 375 × 0.069 =
A movement of 25.9 mm is required. C. In the case of a No. 2 manhole with an inside diameter of 1200 mm, A
In order to match the point and the point B, a radius of 600 × 0.06
A movement of 9 = 41.4 mm is required. Therefore, the outer diameter of the inverting block 3 may be 6.9% smaller than the inner radius of the manhole 5. In addition, the gap W for joints
In practice, it is better to reduce the radius by 10 mm outside the range of 6.9% in order to secure. The calculation formula is the inner radius of the manhole ×
(Angle to be moved × 0.0069) = product moving length in manhole + product outer diameter. When the opening and closing are changed by 30 ° with one type of invert block, the fan-shaped gap α1 is 15 ° (see FIG. 26).

When the opening / closing angle is 20 °, the angle of the sector-shaped gap α1 is 10 °. In this case, the types of blocks are increased, and the invert block 3 having a plurality of center lines is required.

By the way, the center points A and B are adjusted by moving the inverting block 3 in the manhole 5 by 15 points.
A 30 mm movement is required to match the ° curve difference. Specifically, in the case of the 900mm No. 1 manhole, it is 30mm upward for 105 ° to 90 °.
In order to move from 105 ° to 120 °, it is necessary to move downward by 30 mm. In any case, if the joint W is 10 mm, the diameter of the invert block 3 becomes 820 mm.

In order to change the direction of the curve by 15 °, if the gap α1 is moved by 107 mm in an arc shape, the gap α1 becomes 2 °.
The two center lines are very close, and the tolerance is 15 ° in one direction. Open / close with one type of inverted block 3
When making a change of 0 °, the sector-shaped gap α1 becomes 15 ° (see FIG. 26). When the opening / closing angle of the gap α1 is 20 °, the angle of the sector-shaped gap α1 is 10 °, and in this case, the types of blocks increase.

[0029] 3 7, 3 8, so as to facilitate construction the invert block 3 with a weight, and the combined low tube with attachment tube, drop, beveled is facilitated to form extremely accurate waterways Height adjusting device 8 is provided at a plurality of locations substantially at the center of the facing portion of the inverting block 3 and the arc portion 31 as shown in FIGS. 3, 4, and 6. Have been.

The height adjusting device 8 has a notch 81 of a predetermined size into which a bolting jig can be inserted. A mold 83 is integrally attached, and a bolt 9 is screwed into the screw portion 82. Then, at the construction site, the height of the inverting block 3 is adjusted by rotating the bolt 9 so that the inverting block 3 can be disposed substantially horizontally on the bottom plate 54.

[0031]

Since the present invention is configured as described above, the following effects can be obtained. (1 ) For example, an invar having a headrace with three types of center lines
The combination of the heat block and the inlet and outlet at most angles
Compatible and easy to assemble. In detail, the angle of the inflow pipe can be freely set from 90 degrees to 270 degrees by using any of the three types of invert blocks in which the center line of the headrace is substantially 180 degrees, 135 degrees, and 105 degrees. That is, an invert block having a 180 degree headrace centerline can accommodate angles ranging from 180 degrees to 210 degrees and from 180 degrees to 150 degrees, and an invert block having a 135 degree headrace centerline is 210 degrees.
It can support from 240 degrees up and 150 degrees from the time to the angular range of up to 120 degrees, 1 0 invert block having a 5 degree water channel centerline and until 270 degrees from 240 degrees 120
A variety of headrace angles can be supported from an angle range of degrees to 90 degrees. (2 ) Conventional invert construction was limited to manhole assembling, but according to the present invention, after completion of manhole assembling, the invert block can be constructed in accordance with the manhole construction process, and further carried into the manhole. Also, assembly within the manhole is simple. (3) It is possible to cope with the angle deviation that occurs at the site without greatly changing the image of the handmade invert. In addition, no matter who makes it, an invert in the same state can be completed easily and in a short time. In addition, the finish can be beautiful, handmade defects can be removed, and errors can be reduced. (4) In the case of the conventional hand-made invert construction, the invert block according to the present invention is compared with the case in which one skilled craftsman worked in the manhole for one day and could only complete one place at a time. By using, no advanced technology or long experience is required, anyone can easily form, and the finished state is beautiful, and anyone can produce an invert with high accuracy. Further, the present invention is a very useful invention that can significantly improve the workability and greatly reduce the burden on the worker.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view of a manhole of the present invention.

FIG. 2 is a central longitudinal sectional view of the manhole of the present invention.

FIG. 3 is a plan view of the invert block when a 180 ° headrace channel is formed.

FIG. 4 is a plan view of the invert block when a 135 ° headrace channel is formed.

FIG. 5 is a side view of an invert block of a headrace having a 135 ° centerline.

FIG. 6 is a plan view of the invert block when a 105 ° headrace channel is formed.

FIG. 7 is a plan view of the first arrangement of the first embodiment.

FIG. 8 is a plan view of the first embodiment when the center point is moved.

FIG. 9 is a plan view when the first embodiment is completed.

FIG. 10 is a plan view of the first arrangement state of the second embodiment.

FIG. 11 is a plan view of the second embodiment when the center point is moved.

FIG. 12 is a plan view when the second embodiment is completed.

FIG. 13 is a plan view of the first arrangement state of the third embodiment.

FIG. 14 is a plan view of the third embodiment when the center point is moved.

FIG. 15 is a plan view of the completed third embodiment.

FIG. 16 is a plan view at the time of completion of the fourth embodiment.

FIG. 17 is a plan view of the completed sixth embodiment.

FIG. 18 is a plan view showing a completed seventh embodiment.

FIG. 19 is a plan view when the eighth embodiment is completed.

FIG. 20 is a plan view showing a completed ninth embodiment.

FIG. 21 is a plan view of the completed third embodiment.

FIG. 22 is a plan view showing a completed tenth embodiment.

FIG. 23 is a plan view showing the completion of the second embodiment.

FIG. 24 is a diagram illustrating a calculation example of manhole and headrace angle.

FIG. 25 is an explanatory diagram of a range in which the center line of the curve changes.

FIG. 26 is an explanatory diagram of a gap.

FIG. 27 is an explanatory diagram of an initial arrangement state of the sixth embodiment.

FIG. 28 is an explanatory diagram of the sixth embodiment when the center point is moved.

FIG. 29 is an explanatory diagram of the completed sixth embodiment.

FIG. 30 is a plan view showing a completed fifth embodiment.

FIG. 31 is an explanatory diagram of an initial arrangement state of the third embodiment.

FIG. 32 is an explanatory diagram of the third embodiment when the center point is moved.

FIG. 33 is an explanatory diagram of the completion of the third embodiment.

FIG. 34 is an explanatory diagram of an initial arrangement state of the second embodiment.

FIG. 35 is an explanatory diagram of the movement of the center point in the second embodiment.

FIG. 36 is an explanatory diagram of the completion of the second embodiment.

FIG. 37 is a sectional view of the height adjusting device.

FIG. 38 is a perspective view of a height adjusting device.

39A to 39E are plan views of an invert having a headrace manufactured in a conventional factory.

[Explanation of symbols]

3 , 3a , 3b , 3c Invert block 4 Headrace channel 5 Manhole 51 Receiving frame 51b Straight wall 52 Sloping wall 53a Straight wall 54 Bottom plate 55 Foundation 6 Body block 61 Inlet 62 Outflow pipe 7 Concrete or mortar 8 Height adjusting device 81 Notch Part 82 Screw 83 Bracket

Claims (4)

(57) [Claims] An inflatable manhole is formed by combining two inverting blocks, which are substantially symmetrical to the left and right sides, on a bottom slab in the body block. headrace corresponding to the outlet pipe is formed,
With the said invert block forms an arc portion outer diameter not smaller predetermined width than manhole inner diameter, the fan-shaped gap formed between the facing surfaces, a pair of invert block What happened having a headrace having a center line of a predetermined angle the combination shall smell
Te, moves the center point and two ends of the center line in the manhole, and by opening and closing the gap, manholes for invert block structure and forming a headrace matching substantially within a tolerance flow smoothly. 2. A combination of a pair of invert block What happened having a headrace having a substantially center line of the straight 180 °, moves the center point and two ends of the center line in the manhole, and by opening and closing the gap 2. An invert block structure for a manhole according to claim 1, wherein a water passage that substantially coincides within a permissible range of smooth flow is formed. 3. A combination of a pair of invert block What happened having a headrace having a center line of the 135 ° of the curve, by moving the center point and two ends of the center line in the manhole, and by opening and closing the gap, 2. An inverted block structure for a manhole according to claim 1, wherein a headrace channel that substantially coincides within an allowable range of smooth flow is formed. 4. A headrace having a 105 ° curve centerline.
Combine the pair of inverted blocks provided
Move the center point and both ends of the center line in the
Open and close, and almost match within the allowable range of smooth flow
2. The manhoe according to claim 1, wherein a headrace is formed.
Inverted block structure for LE.