JPS58123935A - Joint of culvert - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an underdrain joint used for connecting underdrains such as water/sewage systems, common ditches, underground passages, tunnels, and sunken underground conduits.

Generally, in order to prevent damage to the culverts due to uneven subsidence of the ground, a plurality of culverts are connected at opposite ends with expandable joints. Such an underdrain joint has a simple structure,
It is desirable to be able to easily assemble it to a culvert on site and to be able to reliably shut off water.

The present invention aims to provide a joint for an underdrain that meets this demand, and includes a pair of anchoring members each having an oval-shaped cross section formed from a cylindrical part and a flange part protruding from one end of the cylindrical part. A short cylindrical first tube made of rubber, synthetic resin, etc. is attached to the cylindrical portion of each locking member, and the outer surface of the flange portion of each locking member is attached to the opposing surface of a pair of culverts to be connected. Both ends of the flexible water-stopping member are attached watertightly, and a short cylindrical second flexible water-stopping member made of rubber, synthetic resin, etc. is loosely fitted into the first flexible water-stopping member. Both ends of the second flexible water-stopping member are installed in the underdrain and are fixed in a water-tight manner to the opposing surfaces of the underdrain together with the flange portions (of each of the anchoring members) using fixing bolts and nuts. This makes it possible to ensure water stoppage with a simple structure, and also allows for easy installation on site.
It is characterized by nine things that make it easy to carry out.

An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 1.1' is a concrete culvert with a circular cross section, and 2 is a culvert connecting culvert 1.1'.

In Fig. 2, the base end of an anchor bolt (fixing bolt) 5.5' is buried in the opposing ends of the underdrains 1 and 1', and the threaded portion of the other end of this anchor bolt 5.3' 3.
, 3'l are collected from the opposite side of the culvert 1.1' as in No. 5@. Such anchor poles) 3.5' are provided at a pitch in the direction of the station.

The nine culvert joints 2 described above have nine anchoring members 4.4' arranged at opposite ends of the culvert 1.1'. Each anchorage member 4.4
'' is formed integrally with the cylindrical portions 4m, 4'a and one end thereof to protrude, and has an abbreviated cross section formed from the nine flange portions 4b, 4'b. Then, the flange portions 4b, 4'bFi of this anchoring member 4.4', and the anchor pole penetrating this)
3.5' and 5.5' are respectively fixed to the opposing faces of the underdrain 1.1'.

The outer surface of each of these 7 rank parts 4b, 4'b and the culvert 1.1'
There is a backing made of rubber, synthetic resin, etc. between the
' is interposed, and this backing 6.6' maintains liquid tightness between the anchoring member 4.4' and the end face of the underdrain 1.1'. Note that it is not always necessary to use the backing 6.6' to maintain liquid tightness between the anchoring member 4.4' and the underdrains 1, 1'. The inner circumferential surface of each collar is fixed to the outer circumferential surface of each anchoring member 4.4' in a watertight manner, and each collar and underdrain 1, 1' are loosely fitted.
A seal link may be interposed between the annular grooves 1m and l'a on the outer circumferential surface of the end portion to maintain liquid tightness.

(9) The joint 2 of the underdrain is the first pipe made of rubber, synthetic resin, etc. in the shape of a short cylinder. It has a second flexible water stop member 7.8. This flexible water stop member 7 has a cylindrical portion 4j4' at both ends.
It is watertightly fixed to the inner peripheral surface of a with bolts 9 and 9' and nuts 10 and 10'. And the flexible water stop member aFi
Anchor bolts 3.3' and nuts 5.1 are loosely fitted into the flexible water stop member 7, and are provided with anchor bolts 3.3' and nuts 5.1 on opposite sides of the underdrain 1.1' together with the running flange portions 4b and 4'b at both ends thereof. It is fixed watertightly by means of a da. In the diagram, 11.11' is oak)
10.10' is interposed between 9 push plates and both ends of the flexible water stop member 70, 12.12' is a nut 5. A push plate is interposed between the water stopper member 8 and both ends of the flexible water stop member 8.

Furthermore, the underdrain joint 2 Fi, both ends are anchoring members 4゜4'
A short cylindrical skin play that fits around the outer periphery of both ports) 14
It has S. This skin plate 1s has one end circumferentially welded to the cylindrical portion 5a, and the other end spot welded to the cylindrical portion 3'aK.

Next, a description will be given of a one-handed connection operation of the underdrain having such a configuration and its function.

The connection of culvert 1゜1' is made when burying culvert 1.1' in the ground, and four steps are required to bury this culvert 1.1' using either the open cut method, the shield method, or the propulsion method. Good too. In this embodiment, a case will be explained in which a culvert 1.1' is buried by the propulsion method. In this propulsion construction method, a strut 14 is disposed between the anchoring members 4 and 4' as shown in FIG. 3 prior to attaching the flexible water stop member 8.
4 is fixed to the anchoring member 4.4' using an anchor bolt 3°3' and a nut 5.5'K. In this state, the underground conduit 1.1' is pressed into the ground at the bottom of the nine shafts using a hydraulic jack or the like.

By performing these operations one after another, the earth and sand in the underdrain 1.1' is removed one by one.

After a continuous culvert of a certain length is formed in this way,
The strut 14 is removed from the anchoring member 4.4', and both ends of the flexible water stop member 80 are attached to the anchoring member 4.4' in a watertight manner as shown in FIG. 3 to complete the underdrain joint 2.

On the other hand, as mentioned above, the ground in which the culvert is buried settles unevenly, and a displacement force acts on the culverts 1.1' K in the direction of separating them from each other, causing the welded portion of the skin plate 15 to the cylindrical portion 4/a to When separated, the underdrains 1 and 1' are separated from each other, but the flexible water stop members 7 and 8 follow this and expand, absorbing the uneven subsidence of the ground. 1. As a result, even if water from outside the culvert 1.1' enters the flexible water stop member 7.8 side, the flexible water stop member 7.8 prevents shallow water from flowing inside.

In the above-mentioned embodiment, an example is shown in which the underdrain joint 2 is applied to the concrete underdrain 1.1', but this underdrain joint 2 is not limited to the concrete underdrain 1.1', but may be made of other materials. It can also be applied to culverts.

For example, the underdrain joint 2 may be applied to an underdrain made of steel or cast iron, or an underdrain made of steel or cast iron and concrete. The shape of the culverts 1 and 1' may be oval, quadrilateral, or polygonal.
9 is constructed by assembling separate parts.

The same applies to the joint 2 of the underdrain.

Further, although the cylindrical flexible water stop member 7.8 is formed to have an arcuate cross section, it does not necessarily have to have this shape, and may have other shapes such as a bellows shape.

In short, any shape may be used as long as it can expand and contract with the relative displacement of the anchoring member 4.4' and maintain its water-stopping function.

As explained above, the present invention provides a pair of anchoring members each having an oval shape in cross section from a cylindrical portion and a flange portion protruding from one end of the cylindrical portion, and the flange portion of each anchoring member is The outer surfaces of the first flexible water-stopping member are attached to the opposite faces of a pair of underdrains to be connected, and both ends of the first flexible water-stopping member made of rubber, synthetic resin, etc. are attached to the cylindrical part of each locking member to make it watertight. Specifically, a short cylindrical second flexible member made of rubber, synthetic resin, etc. is installed inside the first flexible water-stopping member in a watertight manner at both ends of the first flexible water-stopping member. Loosen the water-stopping member, and attach both ends of the second flexible water-stopping member to the underdrain with fixing bolts and nuts to the flange portions of each of the anchoring members and 4 to the opposing surfaces of the underdrain, respectively. Since the structure is watertightly fixed, it is possible to reliably shut off water with a simple structure, and it can be easily installed on site.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of nine culverts connected by the culvert joint of the present invention. FIG. 2 is a sectional view of the stone wall at I-, 1 bell in FIG. 1. Third
The figure is a cross-sectional view showing a state in which a strut used in the propulsion method is attached to the joint of the underdrain shown in Figure 2 with some of its parts removed. 1.1'...Culvert 2...Drain 0 @ hand 3...
・Anchor bolt (fixed period bolt) 4, 4'...Anchoring member A1.47a ・"Cylindrical part 4b, 4'b"
...Flange part 5. Da...Nut 6.6'...Putkin 7...10th flexible water stop member 8...Second flexible water stop member patent issuer Seibu Polymer Chemicals Co., Ltd. Procedural Amendment 1972 February 2nd, 2008 Patent Office Commissioner 91 Bay Your Honor 1 Case Showa 56 Patent Application No. 188598 2;
Name of the invention Culvert joint 3. Relationship with the person making the amendment Patent applicant (1 other person) 5. Date of supplementary iE order l Contents of the amendment (1) Description No. 2iii @ line 17 [oTII! ! Insert the ``material'' after the ``water stop part''. (2) “Ha” after “Figure 1” on the second line of No. 9 of the specification
Insert. (3) After “Patsukin” on page 9, line 11 of the specification, K “
Insert “G”. (4) Correct the red t' L=ta on the attached drawing of the second figure on the drawing. The culvert's move 3. Relationship with the amended person case Patent applicant 5, date of amendment order 7, contents of amendment (II 8A Detailed Affidavit No. 2 Negative Item 12 and 10J Tei No. 1
In the 4th line, the phrase ``lock-wearing'' is supplemented with ``ankari-gi.'' (2) Correct m * 6th negative 1 from the 1st line to the 2nd line. Correct.

Claims (1)

[Claims] (i) A pair of nine anchoring members should be provided with a cross section formed in an abbreviated shape from a cylindrical portion and a nine flange portion protruding from one end thereof, and the outer surfaces of the seven rank portions of each anchoring member should be connected. A short cylindrical first flexible water stop member made of rubber, synthetic resin, etc. is attached at both ends to the cylindrical portion of each anchoring member in a watertight manner. A short cylindrical second flexible water-stopping member made of rubber or synthetic resin is loosely fitted inside the first flexible water-stopping member, and both ends of the second flexible water-stopping member are provided in the culvert. 41. A joint for an underdrain which is watertightly fixed to the opposing surface of the underdrain along with the flange portion of each of the anchoring members by means of fixing bolts and nuts.