JP3407011B2 - Reinforced girder mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing girder mounting device capable of easily and surely preventing the sinking of a railing.

[0002]

2. Description of the Related Art A railroad track is generally constructed by laying a roadbed made of crushed stone, gravel, etc. on the roadbed, and laying a railroad track on which the sleepers and rails are assembled on the roadbed. It is supported by a sleeper and transmitted to the roadbed so as to maintain a predetermined position of the sleeper and to transmit the pressure widely and evenly to the roadbed. When constructing an underground structure directly under the roadbed on such a track, the roadbed may sink, the rail may sink, and its bearing capacity may be reduced or lost, leading to a derailment or capsizing accident of the railway. Therefore, measures have been taken in advance to reinforce the rail and ensure safety.

For example, as a countermeasure, a method is employed in which a plurality of reinforcing girders are laid along the rails, the reinforcing girders are locked to the sleepers, and when the roadbed is submerged, the rails are lifted by the reinforcing girders. There is. At that time, U bolts have been conventionally used as a means for locking the reinforcing girder on the sleeper, which is embedded right under the sleeper, and the pair of screw shafts are inserted into the through holes provided in the flange part of the reinforcing girder. , The nut was screwed in and tightened.

However, since the through holes are formed in the sleepers at a constant pitch in factories and the like, when the through holes are attached to the sleepers on site that are not necessarily arranged at a constant pitch,
The sleepers must be moved according to the position of the through holes, and at that time, since the rails are attached to the sleepers and they are buried in the roadbed, the above work is extremely difficult and the efficiency becomes extremely poor. there were. In this case, the drilling of the through holes at the work site promotes the complexity of the work, and the quality variation easily occurs, which is unsatisfactory and cannot be adopted.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a reinforcing girder mounting device capable of easily and reliably preventing the sinking of a railing.

[0006]

Therefore, according to the invention of claim 1, a plurality of reinforcing girders are arranged along a rail fixed to the sleeper, and a pair of connecting bolts are used to sandwich the reinforcing girder intersecting with the sleeper. In the reinforcing girder mounting device, which is attached to the fixing girder, and which fixes the reinforcing girder via the connecting bolt, a supporting block through which the connecting bolt can be inserted is engaged with both side surfaces of the auxiliary girder,
The pair of support blocks are fixed via a bridge piece and a connecting bolt, which are laid on the reinforcing girder, so that the sinking of the rail can be prevented easily and surely depending on the position of the sleeper. According to a second aspect of the present invention, the support block is engaged with the entire circumference of the side surface of the auxiliary girder to stably and firmly support the reinforcing girder, and the rigidity of the engaging portion of the reinforcing girder is improved. In the invention described above, the connecting bolt is a U-shaped bolt having a pair of screw shafts, and the connecting bolt is locked to the sleeper so that the attachment can be easily performed. According to a fourth aspect of the present invention, four support blocks are arranged on both side surfaces of the reinforcing girder that intersects with the sleepers and on both side positions sandwiching the sleeper, and each pair of supporting blocks sandwiching the reinforcing girder is formed with a bridging piece and a connecting bolt. The reinforcement girders are secured through the rails to firmly and stably support the surroundings of the reinforcing girders that intersect the sleepers, and promote the distributed support of the rail weight to reduce the strength load of the reinforcing girders.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 5, reference numeral 1 is a roadbed made of crushed stone, gravel, etc. laid on a roadbed (not shown). Concrete sleepers 2 are embedded at equal intervals. The sleeper 2 has an isosceles trapezoidal cross section, and a recess 2a having a substantially boat-shaped cross section is provided on an upper surface of an intermediate portion of the sleeper 2, and a pair of rails 3, 3 are laid apart from each other on an outer upper surface of the recess 2a.

On the upper surfaces of both ends of the sleeper 2 and the recess 2a, H
Reinforcement girders 4, 4, 4 made of shaped steel are arranged along the rail 3, and the reinforcement girder 4 comprises a web 4a and upper and lower side flanges 4b, 4c projecting from the upper and lower ends of the web 4a. A pair of supporting blocks 5 and 5 made of galvanized steel are arranged on both side surfaces of the reinforcing girder 4 which sandwich the sleeper 2.

The support block 5 is formed in a substantially L-shaped box shape, and a locking flange 5a which is engageable with the web 4a on its peripheral surface and a locking flange 5b which is engageable with the lower surface of the upper flange 4b. And a locking flange 5c engageable with a leg piece of a bridging piece, which will be described later, and bolt holes 6a are formed in the upper and lower surfaces of the step portion 6 located outside thereof.

A bridge piece 7 is attached to the upper part of the pair of support blocks 5 and 5 with a reinforcing girder 4 interposed therebetween, and the bridge piece 7 is formed in a substantially inverted U shape, and a pair of legs are provided on both sides thereof. Pieces 8 and 8 are formed, and the locking flanges 5c and 5c are formed on the pieces 8.
It can be accommodated in between. The leg pieces 8 and 8 are formed so as to be engageable between the locking flanges 5c and 5c of the support blocks 7 and 7, and the through holes 9 and 9 are formed in the leg portions 8a and 8a.

In the figure, 10 is a U-shaped connecting bolt that embeds the sleeper 2 and is embedded in the roadbed 1, and has shaft portions 10a, 10a that are a pair of screw shafts. The nuts 12, 12 are screwed into the threaded portions 11, 11 formed at the shaft ends by projecting above the track bed 1 into the through holes 9, 9 and tightened. In addition, reference numeral 13 in the drawing denotes a building limit area set above the sleepers 2.

The reinforcing girder mounting device constructed in this manner requires the support block 5 and the bridging piece 7 in addition to the connecting bolt 10 and the nut 12, but these are simple in construction, and for example, zinc alloy die casting and steel plate By press molding,
It can be manufactured easily and inexpensively. Moreover, since the reinforcing girder 4 does not require the processing of the bolt hole as in the conventional case, the manufacturing cost can be reduced accordingly.

Next, when constructing an underground structure (not shown) directly below the roadbed, in order to prevent the sinking of the rail, three reinforcing girders 4 are prepared and mounted on the recess 2a between the rails 3 and 3. When,
They are arranged along the rails 3 on both ends of the sleepers 2 outside the rails 3 and 3, respectively. Then, a portion directly below the roadbed 1 at which the reinforcing girder 4 and the sleeper 2 intersect is partially excavated, and two connecting bolts 10 are buried in the portion under the reinforcing girder 4 with the reinforcing girder 4 interposed therebetween.
The sleeper 2 is held as shown in FIG. 2, and its shaft portions 10a, 10
a is projected above the track bed 1 to maintain the state.

Thereafter, four support blocks 5 are prepared,
Insert each shaft portion 10a into the bolt hole 6a, turn the step portion 6 outward, press the inner end portion from both sides of the reinforcing girder 4, and engage the locking flanges 5a and 5a with the side surface of the web 4a. Then, the locking flange 5b is engaged with the lower surface of the upper flange 4b, and the bottom surface of the support block 5 is connected to the lower flange 4b.
The supporting blocks 5 and 5 are engaged with the entire circumference of both side surfaces of the reinforcing girder 4 by engaging on the c. This situation is as shown in FIG.

Under such a situation, bridging pieces 7, 7 are prepared, placed on the upper flange 4b from above the reinforcing girder 4, and the leg pieces 8, 8 are placed between the locking flanges 5a, 5a. And the leg portions 8a, 8a on the step portions 6, 6. Then, the through holes 9 and 9 are inserted into the shaft portions 10a and 10a, and the nuts 12 and 12 are screwed into the screw portions 11 and 11 to tighten them.

In this way, the bridging piece 7 is pulled downward, the support blocks 5 and 5 are pressed downward, and the reinforcing girder 4 is interposed between the bridging piece 7 and the sleeper 2 via the lower flange 4c. The reinforcement girders 4 are fixed to the sleepers 2 by being sandwiched by the shaft portions 10a and 10a. The mounting condition is as shown in FIGS.

As described above, according to the present invention, the reinforcement girder 4 and the sleeper 2 are attached.
Since the structure for restraining the mounting position of is eliminated and the supporting blocks 5 and 5 are engaged at appropriate positions on the side surfaces of the reinforcing girder 4 to fix the reinforcing girder 4 to the sleeper 2, depending on the pitch of the sleeper 2 at the site. The reinforcing girder 4 can be fixed by using this.

Further, since the reinforcing beam 4 is fixed to the sleeper 2 via the bridge piece 7, the reinforcing beam 4 can be securely and stably fixed as compared with the case where the bridge piece 7 is omitted. Moreover,
The supporting blocks 5 and 5 are located on the lower side of the reinforcing girder 4, and the bridging pieces 7 attached to the blocks 5 and 5 are also located at substantially the same height as the reinforcing girder 4. Therefore, the vertical dimension is suppressed. Therefore, there is no fear of invading the constructional limit area 13.

After a part of the roadbed sinks after such mounting, the weight of the railroad rail acts on the legs 8a, 8a of the bridging piece 7 through the connecting bolts 10, and the reinforcement girder 4 supports the legs.
At that time, since the leg portions 8a, 8a are supported by the step portions 6, 6 of the support blocks 5, 5, they are stably supported, and are closely adhered to the entire circumferences of both side surfaces of the reinforcing girder 4, respectively. Since 5 is engaged, the rigidity of the part is improved, the reinforcing girder 4 is supported stably and firmly, and the weight of the rail track is dispersed. In the case of the embodiment, since four support blocks 5 are arranged around the reinforcement girder 4 that intersects with the sleepers 2, about 1/4 of the weight of the railroad acts on each support block 5, and the support blocks 5 are supported. The load on the block 5 and the reinforcing girder 4 is reduced.

[0020]

As described above, according to the first aspect of the present invention, the bridges in which the support blocks through which the connecting bolts can be inserted are engaged with both side surfaces of the auxiliary girder, and the pair of support blocks are bridged over the reinforcing girders. Since it is fixed via one piece and the connecting bolt, it is possible to easily and surely prevent the sinking of the railing according to the position of the sleeper, and according to the conventional bolt holes provided in the reinforcing girder, the sleeper It is possible to improve the work efficiency of this kind by eliminating the complicated work of moving. The invention of claim 2 is
Since the support block is engaged with the entire circumference of the side surface of the auxiliary girder, the reinforcing girder can be supported stably and firmly, and the rigidity of the engaging portion of the reinforcing girder can be improved. The invention of claim 3 is
Since the connecting bolt is a U-shaped bolt having a pair of screw shafts, the connecting bolt can be easily attached by locking the connecting bolt to the sleeper. 4 on both sides and on both sides of the sleeper
Since each support block is arranged and each pair of support blocks sandwiching the reinforcing girder is fixed via the bridging piece and the connecting bolt, the reinforcing girder that intersects the sleeper is firmly and stably supported, and the The weight distribution of the frame can be promoted and the strength load of the reinforcing girder can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 4 is a perspective view showing an exploded main part of the present invention.

FIG. 5 is an explanatory view showing a mounting state of a reinforcing girder, a support block and a bridging piece applied to the present invention.

[Explanation of symbols]

1 sleeper 3 rails 4 reinforcement girders 5 support blocks 7 Bridge pieces 10 connecting bolt 10a Screw shaft (shaft part)

─────────────────────────────────────────────────── ─── Continued Front Page (72) Toru Nanba Toru Nanba 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Hiroshi Arai 1-6-5 Marunouchi, Chiyoda-ku, Tokyo No. East Japan Railway Company (72) Inventor Yoshihiro Kumaki 2-5-3 Misaki-cho, Chiyoda-ku, Tokyo Iron Construction Co., Ltd. (72) Inventor Kenzo Kiuchi Misaki-cho, Chiyoda-ku, Tokyo 2-5-3 Iron-Construction Construction Co., Ltd. (72) Inventor Tsukasa Fukuji In-house (72) Inventor Toshio Nakanishi 2-3-5 Misaki-cho, Chiyoda-ku, Tokyo Inside Iron Construction Co., Ltd. 2-5-3 Misaki-cho, Chiyoda-ku, Tokyo Inside Iron Construction Co., Ltd. (72) Inventor Hisao Machi 3235-3 Nanbu Tsuji, Urawa-shi, Saitama Limited Metalwork Industry Limited ( 56) References JP-A-6-264401 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E01B 3/00-3/48 E01B 26/00 E01B 1/00

Claims (4)

(57) [Claims] 1. A plurality of reinforcing girders are arranged along a rail fixed to a sleeper, a pair of connecting bolts are attached to the sleeper with a reinforcing girder intersecting with the sleeper interposed, and the reinforcing girders are connected via the connecting bolts. In the reinforcing girder mounting device that is fixed,
Reinforcement girder characterized in that a support block through which a connecting bolt can be inserted is engaged with both side surfaces of an auxiliary girder, and a pair of these support blocks are fixed through a connecting piece and a bridging piece spanning the reinforcing girder. Mounting device. 2. The reinforcing girder mounting device according to claim 1, wherein the support block is engaged with the entire circumference of the side surface of the auxiliary girder. 3. The reinforcing girder mounting device according to claim 1, wherein the connecting bolt is a U-shaped bolt having a pair of screw shafts. 4. Four support blocks are arranged on both sides of the reinforcing girder intersecting with the sleepers and on both sides sandwiching the sleeper, and each pair of supporting blocks sandwiching the reinforcing girder is connected via a bridging piece and a connecting bolt. The reinforcing girder attachment device according to claim 3, which is fixed by fixing.