JP4034449B2 - Seismic connection structure of arched culvert - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an arched culvert, and more specifically, an arched culvert in which an insertion fitting connecting part sandwiching a rubber joint of the arched culvert is prevented from coming off due to an earthquake, an impact or an impulse, and damage due to mutual collision is prevented. It is about.
[0002]
[Prior art]
The applicants of the present application disclosed in Japanese Utility Model Laid-Open No. 58-149482, male and female fitting portions were provided at both opening ends of an arched culvert and connected by insertion fitting with a rubber ring interposed therebetween. It is proposed to form an underground conduit with a shape culvert.
[0003]
[Problems to be solved by the invention]
However, the connection by inserting and fitting with the rubber ring of the arched culvert is moved with the formation when it is subjected to an earthquake, excessive shock, or impulse, and it comes off and leaks or breaks due to the collision. There is a fear.
[0004]
[Means for Solving the Problems]
The present invention attaches a plurality of projections having bolt holes in the connecting direction at intervals on the side table near both opening ends of the arched culvert, and connects the arched culvert by inserting it with a rubber ring interposed therebetween and fitting it together. Then, a bolt is inserted by inserting an elastic cylinder such as rubber between two protrusions facing each other , and one end of the bolt is inserted within the range of approximately one half of the insertion fitting width between the arched culverts. In order to solve this problem, a spring or elastic washer that can be expanded and contracted is secured with a nut.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments will be described below with reference to the drawings.
[0006]
The arched culvert 11 is provided with a plurality of projections 12a and 12b which are separately formed at fixed positions spaced apart on the side surfaces near both opening ends. Reference numeral 13 denotes a mounting hole for a projection formed by an insert in an arched culvert, 14 denotes a mounting bolt, and 15 denotes a nut. Each protrusion 12a, 12b attached to the arched culvert 11 is provided with a bolt hole 16 in the connecting direction of the central portion.
[0007]
The arched culvert 11 is formed by inserting and fitting male and female fitting portions 11 a and 11 b provided at both opening ends with a rubber ring 17 interposed therebetween to form an underground pipe line 18 formed by the arched culvert 11. As shown in FIG. 2, the rubber ring 17 is press-fitted in a substantially rectangular cross section as shown in FIG. 2 to prevent water leakage.
[0008]
Next, the bolt 20 is inserted into the bolt hole 16 which is in contact with the elastic cylinder 19 such as rubber between the two projections 12a and 12b facing each other with the insertion connecting portion interposed therebetween. The nut 22 is fastened with a coil spring or elastic washer 21 that can be expanded and contracted to a limit of half the insertion fitting width. Reference numeral 23 denotes a cover fitted for earth protection. The other end of the bolt 21 is fixed by a nut 24 that is integral with or separate from the bolt. Reference numeral 25 denotes a washer.
[0009]
The projections 12a and 12b are attached to four spaced apart arched culverts 11 having an inner diameter of 800 mm to 2500 mm as shown in FIG. 4A, and the large arched culverts 11 of 2800 mm to 3000 mm are shown in FIG. As shown in FIG. 4 (b), the bolts 14 are fixedly attached at five places spaced apart.
[0010]
Reference numeral 26 denotes an elastic plate made of rubber or the like sandwiched between the outer vertical surfaces 11c and 11d of the arched culvert 11 to be inserted and connected.
[0011]
【The invention's effect】
As described above, the present invention provides a bolt in the bolt hole that communicates with each of the projections facing each other across the insertion connection portion of the arch-shaped culvert in the underground conduit by insertion connection with the rubber ring of the arch-shaped culvert interposed therebetween. Is inserted, and one end is inserted, and the nut is fixed with a spring or elastic washer that allows expansion and contraction within the range of one half of the connection width. , Even if an impulse is generated and the stratum around the underground conduit moves, the fixing action accompanied by the expansion or contraction of the spring or elastic washer prevents the insertion connection part between the arched culverts from coming out, and the water leaks due to the extraction. This eliminates the damage and prevents the damage caused by the collision between the arched culvert and the insertion connecting portion.
[0012]
In addition, since an elastic cylindrical body such as rubber is sandwiched between the protrusions facing each other with the insertion connecting portion interposed therebetween, there is an effect that the damage of the protrusion does not occur.
[0013]
Further, by inserting an elastic plate such as rubber between the outer vertical surfaces facing each other between the arched culverts, there is an effect that damage due to the collision of the arched culverts can be prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an arched culvert pipe line. FIG. 2 is an enlarged longitudinal side view of a connecting portion. FIG. 3 is an enlarged longitudinal front view showing a mounting state of a protrusion. FIG. 5A is an example of an arched culvert having an inner diameter of 800 mm to 2500 mm, and FIG. 5B is an example of mounting a protrusion in an example of a large arched culvert having a diameter of 2800 mm to 3000 mm. Front view shown [Explanation of symbols]
11 is an arched culvert 12a, 12b is a protrusion 13, a mounting hole 14 is the same as a mounting bolt 15, a nut 16 is a bolt hole 17, a rubber ring 18 is an underground conduit 19, an elastic cylinder 20 is a bolt 21 is a coil spring or The elastic washer 22 has a nut 23 fitted therein, the cover 24 has a nut 25, the washer 26 has an elastic plate such as rubber.

Claims (2)

Attach a plurality of protrusions with bolt holes in the connecting direction at intervals on the side table near both open ends of the arched culvert, and connect the arched culverts by inserting them with rubber rings and fitting them together. Insert a bolt between two protrusions and insert an elastic cylinder such as rubber , insert one end of the bolt between the arched culverts, and expand and contract within a range of approximately one half of the fitting width. An arcuate culvert earthquake-resistant connecting structure characterized in that a nut is fixed with a spring or an elastic washer between them. Seismic coupling structure arched culvert according to claim 1 which clamping enter the elastic plate such as rubber between the outer vertical surfaces of the arcuate Calvert.

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