JPH0450592A - Inner surface lining structure material of culvert - Google Patents

Abstract

PURPOSE:To improve the working efficiency of construction by carrying plural lining panels as divided segments divided into plural pieces in a circumferential direction, into a culvert in that condition, and by assembling them in the culvert, so as to form a lining cylinder along the inner surface thereof. CONSTITUTION:Required number of lining panels 2A, 2B, 2C, 2D are carried from a man hole into a culvert 1, and, after the 2A is put on a liner, the other lining panels 2B and 2C adjuacent thereto are set in turn, and by inserting a rod connection piece 3 in turn into a connection hole 7 formed on a coupling line 6, the lining panels are connected with each other. The lining cylinders 2, 2 adjacent to one another in the direction of the pipe pass of the culvert 1, are connected with each other by a connection means 4. By fitting a connection piece into the recessed parts due to dovetail grooves 8, 8 opposed with each other at plural points in a circumferential direction, the lining cylinders 2, 2 are connected with each other.

Description

[Detailed Description of the Invention] Industrial Application Field This invention is intended for use in corrosion prevention, repair, etc. on the inner surface of culverts made of reinforced concrete, humid pipes, steel pipes, cast iron pipes, etc. that constitute relatively large-diameter water and sewer systems. This invention relates to a synthetic resin lining structure material for later lining.

Conventional technology and its problems Conventionally, as this type of lining structure material, a short synthetic resin cylindrical lining material with an outer diameter corresponding to the inner diameter of the culvert was used, and this was sequentially attached to the ends of the pipe in the axial direction. and a joint ring having a U-shaped cross section that is joined at the rear, and when the cylindrical lining members are arranged in series in the pipe direction of the culvert, the inner circumferential surface of each end of the adjacent lining member It has been proposed that the lining members are joined to each other by fitting the joint ring into an engagement groove formed in
-169683).

However, in the case of the conventional lining structure material mentioned above, since the cylindrical lining material with an outer diameter corresponding to the inner diameter of the culvert is carried into the culvert and installed, it is once deformed into a flat shape. It must be brought into the culvert, then restored to a cylindrical shape within the culvert, and placed on the inner surface of the culvert. The same applies to joint rings.

Therefore, the above-mentioned deformation and restoration work is extremely troublesome. In particular, the work of restoring the shape of a tubular lining material inside a culvert requires greater force as the size increases17, and it also becomes necessary to use various types of jacks to restore the shape, making the work difficult. It was extremely difficult. In addition, due to the difficulty of accurately restoring the shape, it is likely that the lining material will not be properly attached to the inner surface of the culvert, and as a result, it will likely be difficult to fit the joint ring. Furthermore, there was a problem in that construction work within a narrow culvert was extremely difficult and construction workability was poor.

An object of the present invention is to provide a lining structure material that can solve these problems.

Means for Solving the Problems This invention consists of dividing the lining material into a plurality of pieces in the circumferential direction, and joining them easily, accurately and reliably within a narrow working space inside a culvert. This was achieved by developing a specific joining structure made using Uruchino.

That is, the present invention provides a lining panel of a predetermined length made of hard synthetic resin that has a cross-sectional shape that matches the inner surface shape of a culvert and is divided into a plurality of pieces in the circumferential direction, and a lining panel that is adjacent to the lining panel in the circumferential direction. A rod-shaped joining material that joins each other, and a joining means that sequentially joins a lining cylinder constituted by joining a plurality of the lining panels in the circumferential direction in the length direction of the culvert, On both side surfaces in the circumferential direction, engagement grooves with irregular cross-sections having a wider part at the back than the entrance part are formed over the entire length, and the opposing engagement grooves allow the lining panel to be fitted along the seam line of the lining panel. A culvert, wherein a joint hole is formed, and the rod-shaped joint material has a cross-sectional shape corresponding to the joint groove and can be inserted into the joint hole from one end. The main feature is the inner lining structural material.

The engagement groove for joining each lining panel is preferably configured as a dovetail groove, and correspondingly, the rod-shaped joining material is formed to have a drum-shaped cross section.

In addition, the rod-shaped bonding material is preferably made of ultra-high molecular weight polyethylene with good sliding properties so that it can be easily inserted into the bonding hole formed by the engagement groove by a driving operation. is advantageous.

Example Next, embodiments of the present invention will be described based on the accompanying drawings.

In the embodiment shown in FIGS. 1 to 4, the lining structure according to the invention has a large diameter (for example, an inner diameter of 800 to 2,000 m) so that workers can work inside it.
Culverts (
1) and is used to construct the inner lining of the culvert (1), and is used as a segment constituting the cylindrical lining cylinder (2) disposed along the inner surface of the culvert (1). Multiple lining panels divided into multiple pieces in the direction (2A) (2B) (2C
) (2D), a rod-shaped joining material (3) that sequentially joins these lining panels to each other in the circumferential direction, and a joining means (4) that sequentially joins the lining cylinders (2) to each other in the pipe direction. Provided as an element.

The lining panels (2A), (2B), (2C), and (2D) are made of hard synthetic resin such as hard vinyl chloride resin, and have a cross-sectional shape that matches the inner surface shape of the culvert (1). Therefore, it is formed to have an arcuate cross section to fit the cylindrical culvert (1), and by sequentially joining a plurality of them, a lining cylinder (2) having an outer diameter smaller than the inner diameter of the culvert (1) is constructed. It is said to be useful. Bracket lining panel (2A) (2B) (2C) (2
D) all have the same length in the pipe axis direction, and generally have a length corresponding to about 70 to 100% of the inner diameter of the culvert (1), and have a length of about 1 to 2 m. It is formed. Moreover, the thickness thereof is approximately 15 to 40 m.

The number of divided lining panels (2A), (2B), (2C), and (2D) in one lining cylinder (2) is generally in the range of three to several pieces, but even larger diameter culverts In the case of (1), it may be formed by dividing into more than a few pieces.

Each lining panel (2A) (2B) (2C) (2D)
An engagement groove (5) is formed in the center portion in the thickness direction over the entire length of the circumferential joining end surface, that is, on both side surfaces. As shown in FIGS. 2 and 3, the engagement groove (5) has an irregular cross-sectional shape with a relatively wider portion (W2) at the inner part than the width (Wl) of the entrance portion. In this illustrated embodiment, it is formed as a dovetail groove. Therefore, lining panels (2A) (2B) (
2C) (2D), a pair of the above-mentioned engagement grooves (5) (
5) to form a joining hole (7) having a generally drum-shaped cross section.

The rod-shaped bonding material (3) is inserted into the bonding hole (7) from the negative end, and is inserted into the circumferentially adjacent lining panel (2A).
(2B) (2C) (2D) They are integrally joined together inseparably.

Therefore, the rod-shaped bonding material (3) is attached to the lining panel (2).
A) has the same length as (2B), (2C), and (2D), and has a cross-sectional shape corresponding to the cross-sectional shape of the joining hole (7) formed by the opposing engagement grooves (5) (5). , in this embodiment, is formed into a substantially drum-shaped cross section. Further, the material of this rod-shaped bonding material (3) is not particularly limited, and may be made of metal such as aluminum, but is preferably made of hard synthetic resin such as polyethylene or polypropylene. Among these, it is particularly preferable to use ultra-high molecular weight polyethylene because it has good slipperiness on the surface and can be inserted smoothly into the joining hole (7).

A plurality of the above lining panels (2A) (2B) (2C
) (2D) in the pipe direction, that is, in the length direction of the culvert (1), the specific structure thereof is not particularly limited in the present invention. do not have. Therefore, for example, they may be joined via a joint ring in accordance with the prior art described above. FIGS. 2 to 4 show a preferred example of such a joining means. In this embodiment, at multiple locations on the inner surface of the end edge in the tube axis direction of each lining cylinder (2),
A horizontal dovetail groove (8) is formed which has a depth up to the middle part of the wall thickness and gradually becomes wider from the edge side toward the inside. and the dovetail grooves (8) of the lining cylinders (2) (2) to be joined to each other.
, (8), a correspondingly shaped joint piece (
9) by pressure-fitting the lining cylinder (2)
(2) are joined together inseparably.

This joint piece (9) is also preferably made of a hard synthetic resin, and is fitted and fixed into the dovetail groove (8) using an adhesive if necessary.

FIG. 5 shows another example of joining means along the length of the conduit. In this example, the joint piece (10) is configured as a rod-shaped piece having enlarged engagement heads (10a) at both ends, and this is a rod-like piece formed on the inner surface of the end edge of the lining cylinder (2) (2). It is designed to be tightly fitted into the shaped engagement groove (11) (11).

Figure 6 shows yet another modification, in which mounting screws (
12) and attach the synthetic resin bonding ring (+3) (
14) are fixed to each other, and the joining ring body (13)
(14) by pressure-fitting the engaging protrusions (15) facing each other into the corresponding engaging holes (16), the two lining cylinders (2) and (2) can be integrally joined together. It is done like this.

When constructing the inner surface of the culvert (1) using the above-mentioned lining structure material according to the present invention, if necessary, the inner surface of the culvert (1) should be lined in advance to avoid the effects of unevenness on the inner surface of the culvert (1). A liner (17) for unevenness adjustment is attached to the inner surface. This liner may be made of wood or metal, and is fixed to the culvert (1) by nailing, screwing, etc. Next, install the required number of lining panels (2A) (2B) (2C) from the manhole (as shown) into the culvert (1).
(2D) is carried in, for example, the first lining panel (2A) is placed on the liner, and then other lining panels (2B) (2C) adjacent to this are sequentially set, and their seam line (6 ) The rod-shaped joining pieces (3) are successively inserted into the joining holes (7) formed in the lining panels to join the lining panels together. Finally, the remaining one lining panel (2D) located at the top is fitted, and the rod-shaped joint piece (3) is inserted and joined in the same manner as above to assemble one unit lining cylinder (2).

After that, the next unit lining cylinder (2) is assembled in the same manner as described above, and then the lining cylinders (2) (2) adjacent to each other in the pipe direction of the culvert (1) are connected to each other using a joining means. (4) Join. For example, in the embodiment shown in FIGS. 2 to 4, the lining is formed by fitting the joining piece (9) into the recess formed by the dovetail grooves (8) (8) facing each other at multiple locations in the circumferential direction. Cylinder (2)
(2) Join each other. Then, by repeating such operations, the inner surface of the culvert (1) is covered over the entire length of the pipe line with the lining cylinder (2).

In addition, during the above construction, the lining panel (2A) (2
B) (2C) (2D) Mutual joint parts and lining cylinders (2) (2) Mutual joint parts are provided with backing (18) as necessary to ensure watertightness (Fig. 3 and 4) or filled with caulking material.

Effects of the Invention According to the lining structure material according to the present invention, a plurality of lining panels as divided segments that are divided into a plurality of pieces in the circumferential direction can be carried into a culvert as they are, and then the lining panels can be transported into a culvert as they are. Since the lining is assembled inside the culvert and the lining cylinder is formed along its inner surface, there is no need to first deform the cylindrical lining material into a flat shape and then bring it in and restore its shape inside the culvert, unlike in the conventional products. This eliminates the need for work, makes it easier to carry in materials and work inside the pipeline, and improves construction work efficiency. In addition, the lining panels are joined within the culvert, and this joining work is done by inserting a rod-shaped joining material into the joining hole formed along the joint line of the lining panel. The joining work can be easily performed even in narrow pipes, and a sufficiently strong and stable joint can be achieved.In addition, it can be easily performed by using backing, adhesive, or caulking material. It is also possible to ensure good watertightness.

As described above, according to the lining structure material of the present invention, it is possible to easily and reliably line the inner surface of a culvert such as a relatively large-diameter upper/sewage channel, and it is particularly useful for repairing and regenerating aged culverts. It is ideal for construction work.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a cross-sectional view showing the construction state, Fig. 2 is a perspective view showing the assembled state of the lining structural members, and Fig. 3 shows the joint structure between the lining panels. 4 is a longitudinal sectional view showing the state of the lining structure after assembly; FIG. 5 is a longitudinal sectional view showing a modified example of the joint structure between the lining cylinders; and FIG. It is a half-frame vertical sectional view showing still another modification in a separated state before joining. (1)... Culvert, (2)... Lining cylinder, (2A) (2B) (2C) (2D)... Lining panel, (3)... Rod-shaped joining material, (4)... ...Joining means, (5)...Engagement groove, (6)...Joint line, (
7)...Joining hole, (8)...Dovetail groove, (9)...
・Joint piece. Above Figure 5 Figure 6

Claims (3)

[Claims] (1) A lining panel of a predetermined length made of hard synthetic resin that has a cross-sectional shape that matches the inner shape of the culvert and is divided into multiple pieces in the circumferential direction, and the lining panels that are adjacent to each other in the circumferential direction are joined together. and a joining means for sequentially joining a lining cylinder constituted by joining a plurality of the lining panels in the circumferential direction in the longitudinal direction of the culvert, Engagement grooves with irregular cross-sections having a wider part at the back than the entrance part are formed on both sides over the entire length, and the opposing engagement grooves form a joining hole along the seam line of the lining panel. The inner lining of a culvert is characterized in that the rod-shaped joint material has a cross-sectional shape corresponding to the joint groove and can be inserted into the joint hole from one end. Structural material. (2) Claim (1) wherein the engagement groove of the lining panel is formed in a dovetail groove, and the rod-shaped joining material is formed in a generally drum-shaped cross section.
) Inner lining structural material for culverts. (3) The inner lining structural material for a culvert according to claim (1) or (2), wherein the rod-shaped bonding material is made of ultra-high molecular weight polyethylene.