JP2000064224A - Water guiding gutter installation work at joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction method allowing the in-joint treatment of leakage water falling from the bridge surface of a bridge structure via a joint part. SOLUTION: A core drilling process is applied to the opposed surfaces of concrete horizontal girders 1 adjacent to each other via a joint 2 in a bridge girder axial direction, thereby forming a recessed groove 4 of circular arc cross section in a bridge breadthwise direction. A guide wire is then passed through the recessed groove 4 and a gutter sheath material 7 having a flat tube shape in an ordinary state with a water collecting and discharging material 6 of approximately circular cross section placed is connected to one end of the guide wire and the gutter sheath material 7 is pulled into the recessed groove 4 by pulling the other end of the guide wire. Thereafter, the gutter sheath material 7 is filled with an elastic fill 15, thereby pressing the water collecting and discharging material 6 to the upper end of the recessed groove 4 and the gutter sheath material 7 to the lower surface of the recessed groove 4 respectively.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing a water guide gutter at a joint of a horizontal girder between concrete bridges adjacent in the axial direction of the bridge. 2. Description of the Related Art Bridge structures are designed such that joints are provided for temperature changes and loads to absorb deformation and maintain structural stability. 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. SUMMARY OF THE INVENTION In the present invention, the above object is attained by perforating cores in opposing surfaces of adjacent concrete cross girders sandwiching joints in the direction of the bridge, so that the bridge widths facing each other are reduced. In the normal state, a flat tube-shaped gutter covering material with a substantially circular cross-section is placed on one of the guide lines, while forming a concave groove with an arc-shaped cross section in the direction. After connecting and pulling the gutter jacket material into the groove by pulling the other end of the guide wire, the inside of the gutter jacket material is filled with an elastic filler material to collect the drainage material at the upper end of the groove and outside the gutter. The problem is solved by means of pressing and fixing the material to the lower surface of the concave groove. An embodiment of the present invention will be described below 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 jacket 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 concave grooves 4 and 4 to close the joint 2. Can be maintained. The present invention is intended to cope with the 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 comprising the gutter outer material 7 filled with the material is discharged through the drainage hose 13 and the drainage pipe 14 as shown in FIGS. The present invention has the following effects since it is constructed as described above. 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. A gutter filled with an elastic filler in the jacket material, i.e., a drainage material, is fixed to the upper end of the groove and the lower surface of the gutter by pressing the gutter material to the lower surface of the groove, thereby stopping water leakage from the upper portion within the joint, and piers, etc. It can be drained to the outside without falling. The opposing surface of the adjacent concrete 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 or contracts. The closed state can be maintained. [0024] The method of perforating the opposing 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. . [0025] The method of perforating the opposing surface of the concrete girder facing the joint with the joint therebetween and installing a water guide gutter here allows the construction under the bridge surface 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. [Description of Signs] 1 Concrete girder 2 Joint 3 Diamond core drill 4 Recessed groove 5 Guide wire 6 Drainage material 7 Gutter covering material 8 Filler filling material 9 Concrete main girder 10 Bridge pier 11 Gutter 12 Floor slab 13 Drain hose 14 Drain pipe 15 Filling material

Continuation of front page    (72) Inventor Hidenori Satake             23-5 Nishiokaya, Sasayama-cho, Taki-gun, Hyogo Prefecture (72) Inventor Yasuhide Tomimatsu             258 Kitaseda, Uchida-cho, Naga-gun, Wakayama Prefecture (72) Inventor Seiichi Inoue             2-10-13 Yoneyamadai, Kamimaki-cho, Kitakatsuragi-gun, Nara F term (reference) 2D059 GG01 GG43

Claims (1)

[Claim 1] Cores are drilled in 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. 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.