JP2942253B1 - Joint section gutter installation method - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To deal with water leakage falling from a bridge surface of a bridge structure through a joint portion in the joint. SOLUTION: Cores are drilled on opposing surfaces of adjacent concrete cross beams with joints in the axial direction of the bridge,
An arc-shaped groove with a cross section in the width direction of the bridge facing each other is formed, and a guide line is inserted into the groove, and a collection tube with a substantially circular cross section is placed on one of the guide lines. After connecting the gutter jacket material and pulling the gutter jacket material into the groove by pulling the other side of the guide wire, the inside of the gutter jacket material is filled with an elastic filler, so that the drainage material is placed on the groove. The end and the gutter jacket material are pressed against the lower surface of the groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a water conduit at a joint of a horizontal girder between concrete bridges adjacent in the axial direction of the bridge.

[0002]

2. Description of the Related Art Bridge structures are designed so that deformation is absorbed by providing joints with respect to temperature changes and loads, thereby maintaining the stability of the structure. As a method of treating joints of a bridge structure, usually, waterproofing has also been performed by installing a non-drainable expansion joint device at the joints. However, this type of expansion joint device is usually 1.
Several seal rubbers of about 8m length will be installed continuously in the width direction of the bridge. For this reason, a seam is formed, which is a weak point, and a lot of water leaks under the sea.

[0003] A problem in the event of water leakage is corrosion of the bearing. If the bearing loses its function due to corrosion, it will adversely affect the girder structure, and there is a risk of serious damage. In addition, in an urban viaduct, water leakage from joints stains the pier surface, which is not preferable from an aesthetic viewpoint. Therefore, if the joints can be completely waterproofed, it will be effective not only for the durability of the bridge but also for landscape measures.

The above-described method of installing a non-drainable expansion joint device at a joint is a typical method for treating the joint.

[0005] In this case, the expansion joint device has both the effect of following the expansion and contraction of the bridge and the water stopping effect, but water leakage is often seen from the joint of the expansion joint device and the expansion joint device that are continuously installed in the bridge width direction. Can be In the case of small and medium-sized bridges, the joint width may be as small as about 5 cm, and as a countermeasure, almost no treatment is performed, and in rare cases, the seal material is filled near the top of the joint.

If there is a ground cover or a median strip,
Waterproofing measures are taken by filling the joints with a sealing material. However, in this method, there is no continuity with the expansion joint device, and a seam is formed, so that the portion becomes a weak point in the waterproof structure, often leading to water leakage.

Therefore, various measures have been taken to improve the waterproofness of the expansion joint device as a countermeasure against these problems. However, the expansion joint device is a member that directly supports the wheel load, and is subjected to severe conditions. Because of this, there is a limit to waterproofing enhancement.

[0008]

Therefore, in the present invention,
The purpose of this invention is to solve the problem of water leakage from the joint surface of the bridge structure at the joint below the expansion joint device.

[0009]

SUMMARY OF THE INVENTION In the present invention, the above-mentioned object is to provide a cross section in the bridge width direction which is opposed to each other by forming a core in the opposing surface of the adjacent concrete cross beam sandwiching the joint in the bridge axial direction. In addition to forming an arc-shaped groove, a guide wire is inserted into the groove, and a flat tube-shaped gutter jacket material in a normal state where a collection and drainage material having a substantially circular cross section is placed on one of the guide lines, After the gutter jacket material is drawn into the groove by pulling the other of the guide wires, the inside of the gutter jacket material is filled with an elastic filler, so that the drainage material is removed from the upper end of the groove and the gutter jacket material. The problem is solved by means of pressing and fixing to the lower surface of the concave groove.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of a bridge in which a method of installing joint headrace gutters according to the present invention is performed, and FIG. 2 is a sectional view taken along line AA of FIG. These figures show arc-shaped concave grooves 4 and 4 formed on adjacent concrete cross beams 1 and 1 facing each other across joints 2 and having slopes facing each other by a procedure described later.
The gutter 11 is composed of a substantially circular drainage material and a normally flat tube-shaped gutter cover material. The figure shows a state of being fixed to the lower surface of the concave groove by pressure contact. This addresses leakage from the joints. The water leak from the joint is
Through the drain hose 13 and the drain pipe 14. In the figure, 9 is a concrete main girder, 10 is a pier, and 12 is a floor slab.

Next, FIG. 3 shows the procedure of the headrace gutter installation method.
This will be described with reference to FIGS.

First, as shown in FIGS. 3 and 4, adjacent concrete beams 1 and 1 sandwiching joints 2 in the axial direction of the bridge.
Attach the diamond core drill 3 to the side of
As shown in FIG. 6, the arc-shaped concave groove 4 is perforated with a gradient required for drainage on the opposing surface over the entire region in the width direction of the bridge facing each other, and the guide wire 5 such as a rope is inserted into the concave grooves 4, 4. Insert and install. After drilling the core, the diamond core drill 3 is removed. The installation of the guide wire 5 is performed after the completion of the core drilling.

Next, as shown in FIGS. 7 to 9, one of the guide wires 5 is tied to a flat tube-shaped gutter jacket material 7 in a normal state where a drainage material 6 having a substantially circular cross section is placed. By connecting the same and pulling the other of the guide wires 5, the gutter jacket material 7 is drawn into the concave grooves 4, 4 formed in the concrete cross beams 1, 1. The drainage material 6 is placed so as to be wrapped in the gutter jacket material 7.

The collecting and draining material 6 is preferably porous in nature. For example, a thermoplastic resin is heated and melted and extruded from a nozzle to form a filament. The integrated material is used with a substantially circular cross section. For example, culvert drainage material for civil engineering can be used. The gutter jacket material 7 has a flat tube shape in a normal state, but has a tubular shape when the inside is filled with a filler, for example, a shape like a digestion hose is used. For example, industrial hoses and flexible hoses can be used.

As described above, after the gutter jacket material 7 on which the drainage material 6 is placed is drawn into the concave grooves 4, 4 formed in the concrete cross beams 1, 1, as shown in FIG. A filler inlet 8 is attached to one end of the jacket material 7, and the gutter jacket material 7 is filled with a filler having fluidity. After solidification, an elastic filler is used. For example, those made of polyurethane resin or polybutadiene resin can be used. The other end of the gutter jacket 7 is closed, not shown. This is because the filled filler does not leak.

After the filling material has been filled into the gutter jacket material 7 and the filling material has been solidified, as shown in FIG.
The surplus part of the gutter jacket material 7 which is out of 1 is cut and removed.

When the filling material 15 is filled in the gutter jacket material 7, FIG.
As shown in FIG. 2, the gutter jacket material 7 expands. At this time, the gutter jacket material 7 is provided with the concave grooves 4 formed in the concrete cross beams 1, 1.
The shape is constrained by the inner diameter surface of 4 and the outer diameter surface of the placed drainage material 6, the cross section becomes flat, and the lower surface is formed by the concave grooves 4, 4.
Pressure contact. Further, the drainage material 6 is pressed against the ends on the grooves 4, 4 due to the bulge of the gutter jacket material 7. Filling material 1
Since an elastic material is used for the girder 5, even if the concrete girder expands and contracts, the gutter jacket material 7 can follow the expansion and contraction and always presses the grooves 4 and 4 to close the joint 2. Can be maintained.

The present invention is intended to cope with leakage of water to the joints 2 between the concrete beams 1 and 1 adjacent in the axial direction of the bridge in this way. Leakage collected in the water guiding gutter 11 composed of the gutter jacket material 7 filled with the material is discharged through a drain hose 13 and a drain pipe 14 as shown in FIGS.

[0020]

As described above, the present invention has the following effects.

A substantially circular collector / drainage material and a normally flat tube-like gutter jacket material are formed in opposing arc-shaped concave grooves formed in adjacent concrete cross beams which sandwich the joint part. The gutter filled with the elastic filler in the jacket material, that is, the drainage material, is pressed and fixed to the upper end of the groove and the lower surface of the gutter to the lower surface of the groove to prevent water leakage from the upper part in the joint, and to bridge the pier, etc. It can be drained to the outside without falling.

The opposing surface of the adjacent concrete cross beam is cored, a guide wire is inserted through it, and a gutter jacket material is connected to the guide wire, so that the gutter material can be easily drawn into a narrow joint. Can be.

Since an elastic filler is used as a filler for filling the gutter jacket material, the gutter jacket material can follow the expansion and contraction of the concrete girder even if the girder expands and contracts. The closed state can be maintained.

[0024] The method of drilling the facing surface of the concrete girder facing the joint with the joint therebetween and installing a water guide gutter here is also effective for concrete bridges in which the surface painting of the concrete pier cannot be waterproofed. .

Since the opposing surface of the concrete horizontal girder facing the joint is pierced and a water guide gutter is installed here, construction under the bridge surface is possible even during traffic service.

[Brief description of the drawings]

FIG. 1 is a side view of a bridge in which a method for stopping water in joints according to the present invention is performed.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view showing a procedure of construction according to the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is an explanatory diagram showing a procedure next to the procedure shown in FIG. 3;

FIG. 6 is a sectional view taken along the line CC of FIG. 5;

FIG. 7 is an explanatory diagram showing a procedure next to the procedure shown in FIG. 5;

8 is a sectional view taken along the line CC of FIG. 7;

FIG. 9 is a perspective view of a part d in FIG. 7;

FIG. 10 is an explanatory view of a state where an elastic material is filled.

FIG. 11 is an explanatory view of a state where an end is cut.

FIG. 12 is an explanatory view at the time of completion of the construction procedure of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete girder 2 Joint 3 Diamond core drill 4 Concave groove 5 Guide wire 6 Drainage material 7 Gutter jacket material 8 Filler filling port 9 Concrete main girder 10 Bridge pier 11 Gutter 12 Floor slab 13 Drain hose 14 Drain pipe 15 Filler

Continuation of the front page (72) Inventor Seiichi Inoue 2-10-13 Yoneyamadai, Kamimaki-cho, Kitakatsuragi-gun, Nara Prefecture (58) Field surveyed (Int. Cl. ⁶ , DB name) E01D 19/08

Claims (1)

(57) [Claims] [Claim 1] Cores are drilled in opposing faces of adjacent concrete cross beams across joints in the bridge axial direction,
An arc-shaped groove with a cross section in the width direction of the bridge facing each other is formed, and a guide line is inserted into the groove, and a collection tube with a substantially circular cross section is placed on one of the guide lines. After connecting the gutter jacket material and pulling the gutter jacket material into the groove by pulling the other side of the guide wire, the inside of the gutter jacket material is filled with an elastic filler, so that the drainage material is placed on the groove. A method of installing a joint guiding gutter, wherein an end portion and a gutter jacket material are pressed against and fixed to the lower surface of the concave groove.