JPS6145192A - Joint for 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 a joint for an underdrain, and more particularly to a joint for an underdrain provided with a height adjusting means for adjusting the height, inclination, etc. of an anchoring member.

This type of joint generally has an anchoring member and a flexible water-stopping member as its main components.・It is installed at the end of the culvert.

When constructing a culvert, the following steps are often taken: First, the anchoring members assembled in a factory etc. are installed on the foundation concrete, and then the concrete that will become the culvert is poured. is not flat, so if left as is, the anchoring member would be tilted or the heights of the pair of anchoring members would be uneven, so conventionally,
In order to correct the position, the method used was to place a plate-like member under the anchoring member.

However, fine adjustment is difficult when stacking plate-like members of equal thickness, so adjustments are made by preparing a large number of plate-like members of different thicknesses and replacing them. For this reason, it took time to adjust the position of the anchoring member, resulting in extremely low work efficiency.

The present invention has been made to solve these problems, and aims to provide a joint for an underdrain that allows the anchoring member to be easily and quickly positioned. The lower end of the anchoring member is provided with telescopic height adjustment means for supporting the anchoring member. The present invention will be described below with reference to embodiments shown in the drawings.

In Figure 1, 1.1' is a connected concrete culvert, which consists of concrete cylinders with a square cross section, placed facing each other at regular intervals, and filled with rubber or synthetic resin. Elastic members such as (generally foam)
A joint material 2 consisting of is inserted and installed. Culvert L 1
As shown in FIGS. 2 to 5, an annular anchoring member &3' made of a rigid body such as metal or synthetic resin is provided at the end of the /. The anchoring member 3.3' has annular end surfaces 3a, 3A provided along opposite end surfaces of the underdrain 1.1';
End surface portions 3a, 3'a17) Annular outer peripheral portions 3b, 3'b buried in the underdrain 1.1' provided integrally with the outer peripheral edges and inner peripheral edges of the end surfaces 3a, 3'a. An annular inner peripheral part 3 c provided flush with the inner peripheral surface of the provided underdrain 1.1'
+ 3".A water stop material 4 is attached to the anchoring member 3 and 3' so as to straddle both.A flexible member such as rubber, synthetic resin, etc. is attached to the water stop material 4. The cross section of the middle part of the water stop material 4 is formed into a substantially U-shape.Thereby, the middle part of the water stop material 4 is constricted, and the outer periphery of the middle part is constricted. An annular recess 5 that opens outward is formed.As shown in FIG. 3. An annular joint material 6 made of an elastic material (generally foam) such as rubber or synthetic resin is inserted between the end surfaces of the door.The inner peripheral surface of this joint material 6 is It is formed to have an inner diameter that is substantially the same as the inner surface of the underdrain 1.1' and the inner peripheral surface of the annular inner peripheral portions 3c, 3'c, thereby reducing fluid resistance within the underdrain L1'1'. In addition, without using the joint material 6, a short cylindrical sheet material is provided across the inner peripheral surfaces of the annular inner peripheral part sc*a'c, and the inner surface of the culvert 1.1' is In this case, the both ends of the sheet-like material may be attached to the annular inner circumferential portion 3e via a push plate or the like using bolts (15 and 15'), which will be described later. , 3'e.Both ends 4a, 4a' of the water stop material 4 are fitted to the outer periphery of the annular outer periphery 3b, 3'b of the anchoring member 3.3'. It is fixed to the annular outer peripheral portions 3b, 3'b by plates 7.7' and fasteners 8.8' such as bolts and nuts.Both ends 4a and 4a' of the municipal water material 4 are as follows:
The anchoring element 3.3' together with the annular outer circumference 3b, 3'b is embedded in the concrete culvert 1.1'. Water stop material 4
An annular protrusion 9.9' is formed on the outer periphery of both ends 4a and 4a' of the plate 7.7' to prevent it from coming off. It is designed to be engaged and prevented from coming off. In addition, a reinforcing cloth 10 is embedded inside the water stop material 4 as shown by broken lines in FIGS. 4 to 6 to prevent the water stop material 4 from stretching excessively when an external force is applied. It may be possible to sufficiently support external pressure such as water pressure, water pressure, etc., thereby preventing damage to the water stop material 4. An annular joint material 11 made of an elastic material such as rubber or synthetic resin (generally foam) is fitted into the bottom side of the annular recess 5 of the water stop material 4.
The joint material 2 made of an elastic material such as rubber or synthetic resin extends until it comes into contact with the outer surface of the joint material 11, and fills the opening side of the recess 5. It is preferable that the joint material 11 is made of a material that is more flexible than the joint material 2 so as not to inhibit the behavior of the municipal water material 4 during deformation. You can also use .

Figure 3 shows the overall structure of the anchoring member 3.3'.
The annular outer peripheral parts 3b, 3'b at the lower part of the anchoring member 3 are provided with a plurality of support plates 3d extending outward in the axial direction of the underdrain 1.1' from the outer peripheral parts 3b, 3'b. 3'd is fixed, and a flat socket 12.12' having a threaded portion formed on the inner peripheral surface is fixed to the lower surface of the support plates 3d, 3'd. A setting pipe 13.13' having a threaded portion formed on its outer peripheral surface is screwed into the flat socket 12.12'.

In addition, in the figure, 3e and 3'e are reinforcing plates attached to the corner parts of the end face parts 3a and 3'a of the anchoring member 3.3' and the annular outer peripheral parts 3b and 3'b. , the support plate 3d
, 3'd was provided for reinforcement.

14 is an annular outer peripheral portion 3b, 3' at the upper part of the anchoring member 3;
b Km is attached to the hook.

When constructing a culvert, the anchoring member 3 is first installed on the foundation concrete, but at this time, the anchoring member 3.3' is tilted or there is a height difference between the anchoring members 3.3'. If they are different, set pipe 13.13'
The height and inclination of the anchoring member 3°3' can be corrected by screwing it forward and backward with respect to the flat socket 12.12' and expanding and contracting the setting pipe 13.13'.

Figure 4 shows the connection between the pair of underdrains 1.1' and 1.1'.
．． In the case of 0, the cross section of the middle part of the water stop material 4 is approximately U-shaped. Since it is formed in a shape, it can be deformed to closely follow the large relative displacement between the underdrains 1 and 1' as shown in the figure. In this case, the water stop material 4 deforms along the end surface portion 3a of the anchoring member 3. Therefore, the water stop material 4 does not come into direct contact with the underdrain 1.1' when deformed, but comes into contact with the anchoring member 3, so that damage to the water stop material 4 can be prevented.

In addition, 15.15' shown in FIG. 2 is an annular inner peripheral portion 3c,
This is a cap nut attached to the annular outer peripheral portion 3a of 3'c, and the surface on the 3'a side. This bag nut 15.15' is used when assembling, transporting, and transporting underdrain joints in factories, etc., and when constructing formworks on site, pouring fresh concrete, and solidifying it to form underdrains 1.1'. It is used when attaching a metal fitting 16 having a cross-sectional shape during forming. In other words, the cap nuts 15° and 15' are used for fixing both ends of the metal fitting 16 to the annular inner peripheral part 3cs3'c of the anchoring member 3.3'.
17. Used to screw together 17'. And metal fittings 1
6 is fixed at both ends to the anchoring member 3.3', when the joint of the culvert is transported or transferred, the anchoring member 3. The connection is made so that the members 3.3' etc. are not damaged and the anchoring members 3.3' are not moved relative to each other. In addition, by attaching the metal fittings 16 to the annular inner circumferential parts 3c and 3'c, the inner circumferential surface of the culvert 1.1' and the inner circumferential surface of the joint material 6 are held on the same two surfaces, and the metal fittings with. Anchoring member 3゜3' by 16
Underdrain 1.1' is formed by pouring fresh concrete into the underdrain forming mold with the formwork assembled and solidifying it while preventing relative displacement of the underdrain 1.1.
Fix anchoring member 3.3' to
By filling the insertion holes 18 and 18' of 7' with mortar or the like, a flat surface of the inner circumferential surface of the underdrain is formed.

In this case, by aligning the inner formwork surface with the inner circumferential surface of the annular inner circumferential portions 3e, 3'c of the anchoring member 3.3', the underdrain 1.
1' and the inner circumferential surface of the annular inner circumferential portion 3e*3'c can be easily made flush.

Furthermore, the metal fittings 16 are not limited to those having a cross section with a cross section, but may have a T-shaped cross section, a U-shaped cross section, a flat plate, etc., and the material of the metal fittings 16 is not limited to metal. It may be made of synthetic resin or the like that increases rigidity, and essentially any material that can prevent relative movement between the anchoring members 3 and 3' may be used.

Note that the underdrain 1.1' is not limited to a rectangular cross section, but may be polygonal, circular, etc., for example.

Further, in FIG. 2, the annular outer circumferential portions 3b, 3'b are shown perpendicular to the end surfaces 3a, 3'1L, but they may be oblique to each other. Anchor poles 22, 22' are attached to a' in the longitudinal direction of the underdrain 1.1', respectively, to strengthen the bond between the concrete and the anchoring member 3.3'. The anchor bolts 22° and 22' are provided as necessary, and do not need to be provided.

Alternatively, instead of anchor bolts 22.22', anchoring members 3.3' or fasteners 8.8' may be welded to the reinforcing bars installed in culvert 1.1' before concrete is poured. Figures 6 and 7 show other embodiments of the present invention. In this embodiment, the annular anchoring member 3 is
Bolt 20 that tightens the split part 19 and 19' with the tightening member
．． The anchoring member 3 is formed by screwing with a nut 21. Note that the number of divisions is not limited to this and can be arbitrarily selected. Since these points are the same as those in the first embodiment, the same members shown in the first embodiment are denoted by the same reference numerals, and the explanation thereof will be omitted.

As is clear from the foregoing, in the present invention, the lower end of the anchoring member is provided with a telescopic height adjustment means for supporting the anchoring member, so that when the anchoring member is installed, it does not tilt. If there is a height mismatch between a pair of anchoring members facing each other, the height or inclination of the anchoring member can be adjusted by the adjustment means, so that the height of the anchoring member, etc. can be adjusted easily and quickly,
Work efficiency will be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing a connected state of underdrains according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view showing a connected state of underdrains according to an embodiment of the present invention.
3 (IL) is a front view of the anchoring member, FIG. 3 (B) is a side view of FIG.
The figure is a cross-sectional view showing changes in the connection state of the culvert, the figure on page 45 is a cross-sectional view showing the construction state of the present invention, and Figures 6 and 7 are cross-sectional views and anchoring members showing still other embodiments of the present invention. Shown in the front view 0 1.1'...Culvert 2...Gout material 3.3'
...Anchoring member 3a, 3'a...End face portion 3b, 3'b...Outer peripheral portion 4...-Water stop material 5...・・・・・・－Concavity 6・・・・・・・・・：・・・ Joint material (1 other person)

Claims (1)

[Claims] A telescopic height adjusting means for supporting the anchoring member is provided at the lower end of the anchoring member for holding the water stop member provided on the end faces of the pair of underdrains that are to be connected to each other. culvert joint.