JP2010007348A - Method of temporarily paving manhole recessed area during repairing of manhole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of temporarily paving a manhole recessed area during repairing of a manhole, which is carried out by arranging support legs at an opening edge of a lower manhole skeleton, and filling a paving material on a temporary paving material mounting plate on the support legs to form a temporary pavement supporting a small amount of the paving material, the method being implemented safely without hindering traffic of automobiles etc. even in the course of paving. <P>SOLUTION: The method of temporarily paving the manhole recessed area during repairing of the manhole is applicable to a road paving work by an overlay method, a cut-overlay method, and a paving method or the like, and implemented by temporarily paving the manhole recessed area caused after removal of a manhole form and a pavement portion around the manhole form, so as to be temporarily flush with a road surface. According to the method, the support legs 8 engaging with the opening edge 4a of the lower manhole skeleton 4 communicating with an underground pipe are arranged, and the temporary paving material mounting plate 12 is mounted on the support legs 8, followed by filling the paving material in a gap between an opening surface of the manhole recessed area 7 and the temporary paving material mounting plate 12, to thereby form the temporary pavement. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention provides a manhole for repairing a manhole for temporarily temporarily fixing a recess between a road surface and a lower frame generated after removal of an old manhole formwork when repairing a manhole necessary for road construction and road repair. The present invention relates to a method for temporary construction of recesses.

  In general, manhole replacement and repair work is performed in various road constructions including manholes, such as an overlay method, a cutting overlay method, and a pavement method (see, for example, Patent Documents 1, 2, 3, and 4).

  In the series of work steps, after removing the old manhole formwork, a recess having an opening surface wider than the manhole diameter is formed between the road and the lower manhole casing.

Since this depression has a significant impact on road traffic such as automobiles, temporary paving is performed by temporarily filling paving materials and the like.
Japanese Patent No. 2623490 Japanese Patent No. 2623491 Japanese Patent No. 2623492 Japanese Patent No. 3644949

  However, the pavement filling of the manhole recess known in the above-mentioned patent document is often covered with a support lid on the opening of the lower casing, and a large amount of pavement material is completely filled or supported on this support lid. The pavement material is filled only above the lower casing with a middle body interposed without using a lid.

  When covering with a support lid, there is an inconvenience that a large amount of pavement material is wasted, whereas the configuration of the intermediate pad is evaluated in terms of eliminating the waste of a large amount of pavement material. The problem of insufficient retention is inevitable.

  The present invention has been made paying attention to the above points, and is simply provided with a support leg that is securely fixed upright to the lower housing, not the center body, and above the recess in the support leg. Temporary pavement placement board is placed, and this temporary pavement placement board is filled with pavement material to make a temporary pavement that supports a small amount of pavement material, and it is completely in traffic of automobiles etc even during incomplete paving process The purpose is to provide a temporary construction method for manhole recesses when repairing manholes that can be safely and safely performed.

  The configuration of the present invention will be described below.

  (1) In road pavement construction such as overlay method, cutting overlay method, and pavement method, manholes that temporarily pave the manhole recess after temporarily removing the manhole formwork and the surrounding pavement on the same surface as the road surface This is a temporary construction method for manhole depression at the time of repair, and a support leg that engages with the open end of the lower housing that communicates with the underground pipe is placed, and a temporary pavement placement plate is placed on the support leg. Then, a manhole recess temporary construction method for repairing a manhole, comprising: filling a paving material between an opening surface of the manhole recess and the temporary paving material placing plate, and temporarily paving.

  (2) The temporary construction method for manhole depression processing at the time of repairing the manhole according to (1), wherein the temporary pavement placing plate is adjustable in height.

  According to the present invention, the temporary pavement that fills the recess after the removal of the manhole can be used with a small amount of inconvenience that conventionally requires a large amount of pavement material. The time for cutting and removing can be shortened, and the work efficiency can be improved.

  In addition, since the height of the support legs can be adjusted, the width and height of the road surface and temporary paving material mounting plate are optimized to maintain the thickness to withstand loads that do not hinder traffic, depending on the type of road construction. The amount of temporary pavement used can be covered and the cost required for road construction can be significantly reduced.

  And in many cases, the road pavement process is relatively in charge of middle and large construction companies, and manholes and their surrounding construction are done by relatively small enterprises, and since they are divided, it takes a long time. The temporary construction of the factory may also cause inconvenience to normal smooth traffic, but can be solved by the temporary construction method of the present invention.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  An embodiment of the present invention will be described below.

  In the drawings, 1 is a road surface to be repaired, 2 is a manhole facing the road surface 1, 3 is its formwork, 4 is a lower casing communicating with various underground pipes (not shown), and has a tubular opening end 4a.

  In FIG. 1, the road surface 1 around the manhole mold 3 is cut C into a bowl-shaped, side-arc shaped, bowl-shaped similar shaped body 5 using a known road surface cutter (not shown). For example, not only the road surface cutter disclosed in Japanese Patent No. 3371254, but also a cylindrical cutter or a straight-cut disk cutter may be cut into a square shape around the manhole.

  Next, the cut-off similar shaped body 5 is lifted up by a lifting means such as a hanging strap 6 and the whole lump is lifted and removed on the road surface 1 or finely crushed and removed. A recess 7 is formed. In this case, the tubular open end 4a of the lower casing 4 faces the center of the recess 7.

  In FIG. 2, the opening end 4a can be engaged and raised by a support ring 9 of a support leg 8 that comes into contact with the inside and end face of the opening end 4a.

  The support leg 8 includes a plurality of supports 10 and a pedestal 11 at the top.

  On this pedestal 11, a temporary pavement material placing plate 12 having an outer shape substantially equal to the outer periphery of the recessed recess 7 is placed and firmly fixed using a fixing tool (not shown) such as a screw.

  In addition, it is preferable to arrange | position the temporary pavement mounting board 12 in the state of 1-5 cm lower than the surface of the road surface 1, and when performing a cutting process, the cutting is carried out according to the cutting depth d which cuts the road surface 1. A position deeper than the depth d may be determined as appropriate, and the height H of the temporary pavement placement plate 12, that is, the height lower than the road surface 1 can be determined each time by the field worker at the construction site.

  Next, the temporary pavement material X is filled and solidified in the small recesses 13 on the temporary pavement placement plate 12 until the temporary pavement material X reaches the same surface as the road surface 1, and the road is temporarily paved after the manhole is removed. Complete.

  This temporary pavement restores a flat state at substantially the same level as the road being repaired before the repair, so that it can be used as a living road such as an automobile.

  Next, the entire repair work of the road surface 1 can be started.

When the road surface 1 is scratched and damaged, a cutting process (see FIGS. 3A and 4) is performed to cut the entire road surface at a constant cutting depth d, and then an overlay process with a height h ₁ is performed. A new pavement material is formed on the entire surface to perform road restoration (see FIG. 5A), or a new pavement is used directly on the old road surface 1 to perform road restoration by an overlay process of height h ₂ (FIG. 5). (Refer to (b)).

  6 (a) and 6 (b) show the removal process of the manhole mounting location after the temporary paving, and using the road surface cutter along the cut C location of the recess 7 formed on the road surface 1, the temporary paving The material mounting plate 12 is cut to the vicinity of the outer periphery, and the temporary paving material mounting plate 12 and the temporary paving material X including the surface pavement portion Y are integrated with the support leg 8 or separately using the suspension rod 14. Can be removed by means of

  In addition, before filling the temporary paving material X, the center position of the temporary paving material mounting plate 12 is marked with at least two mark points using a white paint or the like on a curb near the road in advance. The length from the point to the center point of the temporary pavement placing plate 12 is measured and placed, and the center position of the hidden temporary pavement placing plate 12 after pavement construction is correctly measured to use various road surface cutters. Can definitely be constructed.

  Further, the center position of the temporary pavement placing plate can be easily detected by other known detection methods.

  Further, when the filling amount of the temporary paving material X is small, it can be easily removed by an operator's artificial cutting process using various working tools such as a breaker.

  The manhole installation location obtained in this way is a lower housing using a new manhole formwork 15 as shown in FIG. 7 using a conventionally known method, and an adjustment panel 16 or a bolt (not shown) as required. 4 is fixed with the height of the new road surface L matched, and the manhole mold 15 is filled with a pavement material of the same material as the road surface in the annular recess 17 on the outer periphery of the manhole mold 15 and the road surface. 15 can be embedded in accordance with the road surface. A new manhole 18 can be inserted and fixed.

  Next, a specific example of the support leg 8 will be described in detail with reference to FIGS.

  The support body 10 has a double structure, and is composed of four tube bodies 10a erected on the support ring 9 and four rod rods 10b provided on the base 11, and this rod rod 10b is placed in the tube body 10a. The height of the pedestal 11 can be variably adjusted up and down by selecting a plurality of screw holes 20 having different heights by adjusting screws 19 provided in the tube body 10a, whereby the temporary pavement material placing plate 12 can be adjusted. The height of the can be adjusted freely.

  It should be noted that the height adjustment is not limited to this embodiment, and other preferred configurations can be used.

  Furthermore, the temporary paving material mounting plate 12 on the pedestal 11 can be used as a circular shape or a square shape according to the shape of the recess.

  Reference numeral 21 denotes a through hole formed in the temporary pavement material placing plate 12 as necessary.

(A), (b), (c) is a part of the pretreatment process according to the present invention, in which the manhole formwork around the manhole installation location of various publicly known roads and the road surface around the workhole are shown in a partially longitudinal manner. (A) is a cutting step, (b) is a removal step, (c) is a cross-sectional view of the recess after removal. Sectional drawing of the state which installed the support leg to the lower housing arrange | positioned in the recess of FIG.1 (c), and the temporary paving material mounting board was attached. The temporary pavement placement board is filled with the temporary pavement material to the height of the road surface, solidified, and shows two different types of construction processing after temporary pavement. (A) is a cross-sectional view when cutting processing is performed , (B) is a cross-sectional view before overlaying Sectional view after performing the cutting process of FIG. 3A is a cross-sectional view after performing the overlay construction after the cutting construction of FIG. 3A, and FIG. 3B is a cross-sectional view after performing the overlay construction after filling the temporary pavement material of FIG. 3B. The temporary paving material placing plate in the manhole recess including the temporary paving material, a sectional view showing the cutting process and the removing process to remove the support leg, (a) is a process after the work shown in FIG. (B) shows the process after the operation | work shown in FIG.5 (b), respectively. Sectional drawing which shows the final process process which fills the pavement material in the annular groove formed between the new manhole formwork and the road surface, and adjusts to the same height as the new paved road surface Partially cutaway side view showing one embodiment of a support leg IX-IX sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Road surface 2 Manhole 3 Manhole formwork 4 Lower frame 4a Open end 5 Mitake-shaped similar shape body 6 Suspension string 7 Recessed recess 8 Support leg 9 Support ring 10 Support body 10a Tube body 10b Stick rod 11 Base 12 Temporary pavement mounting Place plate 13 Small recess 14 Suspension rod 15 Manhole mold 16 Adjustment panel 17 Annular recess 18 Manhole 19 Adjustment screw 20 Screw hole 21 Through hole C Cutting d Cutting depth H, h ₁ , h ₂ Height L Road surface X Temporary Pavement material Y Pavement location

Claims (2)

  In road pavement construction such as overlay method, cutting overlay method, pavement method, etc., when repairing manholes that temporarily pave the manhole recess after removing the manhole formwork and the surrounding pavement on the same surface as the road surface This is a manhole recess temporary construction method, in which a support leg that engages with the open end of the lower casing that communicates with the underground pipe is disposed, and a temporary paving material placing plate is placed on the support leg. A manhole recess temporary construction method at the time of repairing manholes, characterized in that a pavement material is filled between the opening surface of the concave recess and the temporary pavement material mounting plate and temporarily paved.   2. The manhole recess temporary construction method according to claim 1, wherein the temporary pavement placing plate is adjustable in height.

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