JP6181960B2 - Vertical joint expansion and contraction device - Google Patents

Description

  The present invention relates to a telescopic device installed on a vertical joint such as a bridge.

  In the expansion / contraction device installed on the vertical joint, as shown in Patent Document 1 below, a rubber expansion / contraction packing is formed in accordance with the length of the mounting bracket formed in a certain length. And the expansion-contraction packing arranged in the length direction of the vertical joint was connected by the fitting of a mutual convex part and a recessed part.

Japanese Patent No. 3442362

  In the said conventional expansion-contraction apparatus, there exists a possibility that water may leak from the fitting part of the convex part and recessed part of elastic packings, and there existed a problem in water stop.

  An object of the present invention is made in view of such a problem, and is to provide a vertical joint expansion / contraction device capable of obtaining a sufficient water-stopping property.

In order to achieve such an object, the vertical joint expansion / contraction device of the present invention is a vertical joint expansion / contraction device that covers the vertical joint formed between the bridge girders, and is fixed to the bridge girders on both sides of the vertical joint. A holding metal, a fastening plate that is screwed to the holding metal with a bolt, and a packing that is sandwiched between the holding metal and the fastening plate to cover the vertical joint. The fastening plate extends continuously in the longitudinal direction of the joint, and the fastening plate includes a contact part that contacts the holding metal, and a clamping part that extends from the contact part and sandwiches the packing between the holding metal and the holding metal And the insertion hole of the bolt, and the contact portion is formed thin toward the clamping portion side .
Also, the present invention provides a vertical joint extension device which covers the longitudinal joint that is formed between the bridge beam, and holding fittings secured to the bridge girder on both sides of the longitudinal joint, screwing a bolt into the retaining hardware A fastening plate and a packing that is sandwiched between the holding hardware and the fastening plate and covers the vertical joint, the packing continuously extending in the longitudinal direction of the vertical joint, The holding hardware includes a contact portion that contacts the fastening plate, a clamping portion that extends from the contact portion and sandwiches the packing between the fastening plate, and an insertion hole for the bolt, The abutting portion is characterized by being formed thin toward the clamping portion side.
Further, the present invention is a vertical joint expansion / contraction device that covers the vertical joint formed between the bridge girders, the holding hardware fixed to the bridge girders on both sides of the vertical joint, and screwed to the holding hardware. A fastening plate, a packing sandwiched between the holding hardware and the fastening plate and covering the vertical joint, and a contact member sandwiched between the holding hardware and the fastening plate, the packing extends continuously in the longitudinal direction of the longitudinal joint, the said fastening plate in front Symbol bolts are screwed into the retaining hardware, wherein the fastening plate as a fulcrum the contact member The packing is tilted toward the holding hardware, and the packing is sandwiched between the holding hardware and the fastening plate.

  According to the present invention, since the packing sandwiched between the holding hardware and the fastening plate continuously extends in the longitudinal direction of the vertical joint, the seam is provided between the expansion and contraction packings in the longitudinal direction of the vertical joint. Can be prevented, and water stoppage can be increased.

It is a front view which shows the vertical joint expansion-contraction apparatus of one Embodiment of this invention. It is a figure which shows the vertical joint expansion-contraction apparatus of FIG. 1, (a) is a top view, (b) is a side view. It is a figure which shows the fastening board of FIG. It is a figure which shows the construction procedure of a vertical joint expansion-contraction apparatus. It is a 1st figure which shows the modification of a vertical joint expansion-contraction apparatus. It is a 2nd figure which shows the modification of a vertical joint expansion-contraction apparatus. It is a 3rd figure which shows the modification of a vertical joint expansion-contraction apparatus.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a state in which the vertical joint expansion / contraction device 1 of the present embodiment is installed on the bridge girder 2. 2A and 2B are diagrams showing the vertical joint expansion and contraction device 1, in which FIG. 2A is a plan view and FIG. 2B is a side view.

  The vertical joint expansion / contraction device 1 shown in FIGS. 1 and 2 is for covering a vertical joint 21 formed between the bridge girders 2, and a holding hardware 11 fixed to the bridge girders 2 on both sides of the vertical joint 21, A fastening plate 12 that is screwed to each holding metal 11 with a hexagon bolt 14 and a packing 13 that covers a vertical joint 21 are provided.

  The holding hardware 11 is a fixed-sized hardware formed in a rectangular flat plate shape, and includes a plurality of through holes 111, a connecting portion 112 that connects adjacent holding hardwares 11, and an anchor 3 embedded in the bridge girder 2. And a wing reinforcing bar 15 to be welded.

  The through-hole 111 is opened slightly above the central portion of the holding hardware 11 in the height direction, and penetrates the holding hardware 11 in the thickness direction. Nine through-holes 111 are formed in the holding hardware 11 at equal intervals, and are arranged in a straight line along the length direction of the holding hardware 11.

  The connecting portion 112 extends in a tongue shape from both ends of the holding hardware 11 and includes a through hole for screwing. The connecting portion 112 protrudes from the upper side of the central portion in the height direction of the holding hardware 11 and is formed in a substantially rectangular flat plate shape. The above-described through hole penetrates the central portion of the connecting portion 112 in the front-rear direction.

  A plurality of blade reinforcing bars 15 are welded to the holding hardware 11 at intervals. The wing rebar 15 is a round bar having a plurality of irregularities formed on the outer periphery, and extends vertically from one side surface of the holding metal 11 toward the side of the holding metal 11. One blade rebar 15 is provided at each end of one side surface of the holding hardware 11, and eight blade rebars 15 are arranged at equal intervals between the two blade rebars 15. These blade reinforcing bars 15 are arranged in a straight line on one side surface of the holding hardware 11.

  A plurality of holding hardware 11 are arranged along the vertical joint 21 on the side surface of the bridge girder 2, and one end and the other end in the length direction are brought into contact with one end or the other end of the holding hardware 11 arranged adjacent to each other. In this way, the holding hardware 11 arranged along the vertical joint 21 is inserted with a bolt through the through hole of the connecting hole 112 in a state where the adjacent holding hardware 11 and the connecting portion 112 are overlapped with each other. The nut is screwed to the adjacent holding hardware 11 and fixed with screws.

FIGS. 3A and 3B are diagrams showing the fastening plate 12, where FIG. 3A is a side view, FIG. 3B is a front view, and FIG. 3C is an enlarged view in the frame A of FIG.
The fastening plate 12 shown in FIG. 3 is a flat plate formed in a flat plate shape, and includes a plurality of screw holes 121, a contact portion 122 that contacts the holding hardware 11, and a clamp extending from the contact portion 122. Part 123, and a protrusion 124 protruding from the upper edge of the clamping part 123.

  The fastening plate 12 is narrower than the holding hardware 11, is formed in a rectangular flat plate shape having a length of about 1/3 of the holding hardware 11, and has a thickness substantially equal to the holding hardware 11. ing. For example, three fastening plates 12 are attached to the other side surface of the holding hardware 11 side by side with a predetermined space therebetween.

  The contact part 122 protrudes from the lower edge part of the clamping part 123 into a substantially trapezoidal cross section, and extends in a straight line along the lower edge part of the clamping part 123. The sandwiching portion 123 is for sandwiching the packing 13 with the holding hardware 11 and has a rectangular flat plate shape.

  Three screw holes 121 described above are formed in the holding part 123 at equal intervals, and are arranged in a straight line along the length direction of the holding part 123. The protrusions 124 have a semicircular cross-sectional shape, and are formed in six straight lines at equal intervals along the upper edge of the sandwiching part 123. Three fastening plates 12 are arranged side by side on the holding hardware 11.

  The packing 13 is made of an elastic material such as ethylene-propylene-diene rubber, and has a schematic U-shaped cross section. Specifically, the packing 13 has a shape in which a corrugated portion is bridged between upper ends of a pair of leg portions having substantially the same height as the width of the sandwiching portion 123 of the fixing plate 12.

  Concavities and convexities are formed on both side surfaces of the leg. The corrugated portion is configured to cover between the leg portions, and includes two bent portions bent inward. The vertical joint 21 is entirely covered by the wavy portion. The packing 13 is sandwiched between the holding hardware 11 and the fastening plate 12 and extends continuously in the longitudinal direction of the vertical joint 21.

Next, the construction procedure of the vertical joint expansion / contraction device 1 will be described.
First, as shown in FIG. 4, the holding hardware 11 is arranged at the edge of each bridge girder 2, and the blade reinforcing bar 15 is welded to the driving anchor 3 and the through bar 4 embedded in the bridge girder 2. Thereby, the holding hardware 11 is fixed to the bridge girder 2. A fastening plate 12 is previously attached to the holding metal 11 with a hexagon bolt 14 in a state where the packing 13 is loosened to such an extent that it can be inserted. The driving anchor 3 is driven into the bridge girder 2 positioned on both sides of the vertical joint 21.

  Next, the vertical joint 21 packing 13 is inserted between the main body of the holding metal 11 and the fixing plate, and the hexagon bolt 14 is tightened to fix the fixing plate to the holding metal 11. As a result, the fastening plate 12 is fastened to the holding hardware 11 by the hexagon bolt 14 inserted through the insertion hole, and the fastening plate 12 is inclined toward the holding portion 123. As a result, the packing 13 is sandwiched between the clamping part 123 and the fastening plate 12.

  The vertical joint 21 packing 13 is disposed so as to cover the vertical joint 21 in a state where both ends are sandwiched between the holding hardware 11 and the fixing plate. After the vertical joint expansion / contraction device 1 is installed in this manner, the post-cast concrete 5 is cast, and the vertical joint expansion / contraction device 1 is installed in the bridge girder 2 as shown in FIG.

  According to this embodiment, the packing 13 sandwiched between the holding hardware 11 and the fastening plate 12 extends continuously in the longitudinal direction of the vertical joint 21, so that it expands and contracts in the longitudinal direction of the vertical joint 21. It is possible to prevent a seam from being generated between the packings 13 and to improve water-stopping properties.

  In the above embodiment, the case where the insertion hole for the hexagon bolt 14 is formed in the clamping part 123 has been described. Instead, the contact part 122 is formed thinly toward the clamping part 123 as shown in FIG. May be. The insertion hole for the hexagon bolt 14 can be provided in both the contact portion 122 and the clamping portion 123. According to this configuration, when the fastening plate 12 is fastened to the holding hardware 11 with the hexagon bolt 14, the fastening plate 12 is inclined toward the holding hardware 11, and the packing 13 is formed between the holding hardware 11 and the fastening plate 12. Sandwiched between them.

  In addition, as shown in FIG. 6, when the contact member 16 is disposed between the fastening plate 12 and the holding metal 11 and the fastening plate 12 is fastened to the holding hardware 11 with the hexagon bolts 14, the fastening plate 12 may be configured such that the abutting member 16 is inclined toward the clamping portion 123 and the packing 13 is sandwiched between the holding hardware 11 and the fastening plate 12.

  For example, when the hexagon bolt 14 is fastened through the contact member 16 as shown in FIG. 6, the contact member 16 is thinly formed on the upper side, or the fastening plate 12 is thinly formed on the upper side. It can be configured. Also, by tightening the hexagon bolt 14 without passing the contact member 16, the fastening plate 12 tilts toward the holding hardware 11 with the contact member 16 as a fulcrum, and the packing 13 moves to the holding hardware 11 and the fastening plate 12. It is sandwiched between.

  In addition, as shown in FIG. 7, the holding hardware 11 may include a contact portion 113 that contacts the fastening plate 12 and a clamping portion 114 that extends from the contact portion 113. In this vertical joint expansion / contraction device 1, the contact portion 113 is formed thinly toward the clamping portion 114, and the insertion portion of the hexagon bolt 14 is provided in the contact portion 113. Even in this configuration, when the fastening plate 12 is fastened to the holding hardware 11 by the hexagon bolt 14 inserted through the insertion hole of the contact portion 113, the fastening plate 12 is inclined toward the holding hardware 11 and the packing 13 is It is sandwiched between the holding hardware 11 and the fastening plate 12.

 In the above configuration, the insertion portion of the hexagon bolt 14 may be provided in the holding portion 114. According to this configuration, when the fastening plate 12 is fastened to the holding hardware 11 with the hexagon bolts 14 without forming the contact portion 113 thin toward the holding portion 114 side, the fastening plate 12 is fixed to the holding hardware 11. 11 and the packing 13 is sandwiched between the holding metal 11 and the fastening plate 12.

Although the case where the vertical joint expansion / contraction device 1 is installed in the newly installed bridge girder 2 has been described in the above embodiment, the vertical joint expansion / contraction device 1 can be attached to the existing bridge girder 2. When attaching to the existing bridge girder 2, the driving anchor 3 is attached after cutting out the portion where the vertical joint expansion / contraction device 1 of the bridge girder 2 is attached. Moreover, in the said embodiment, although the hexagon bolt 14 fastened by one holding | maintenance hardware 11 and the hexagon bolt 14 fastened by the other holding | maintenance hardware 11 were demonstrated facing each other, The positions of both hexagon bolts 14 may be shifted in the longitudinal direction of the holding hardware 11. Moreover, you may comprise so that the clamping part 123 may become thin toward the front end side so that the packing 13 may be pinched | interposed uniformly with the fastening plate 12. FIG.

DESCRIPTION OF SYMBOLS 1 Vertical joint expansion-contraction apparatus 11 Holding metal 111 Through-hole 112 Connection part 113 Contact part 114 Clamping part 12 Fastening plate 121 Screw hole 122 Contact part 123 Clamping part 124 Projection part 13 Packing 14 Hexagonal bolt 15 Blade reinforcement 16 Contact member 2 Bridge Girder 21 Longitudinal joint 3 Driving anchor 4 Reinforcing bar 5 Post-cast concrete

Claims (3)

A vertical joint expansion / contraction device covering the vertical joint formed between the bridge girders,
Holding hardware fixed to bridge girders on both sides of the vertical joint;
A fastening plate screwed to the holding hardware with a bolt;
A packing that is sandwiched between the holding hardware and the fastening plate and covers the vertical joint,
The packing extends continuously in the longitudinal direction of the vertical joint ,
The fastening plate has an abutting portion that abuts on the holding hardware;
A clamping part extending from the abutting part and sandwiching the packing with the holding hardware;
An insertion hole for the bolt,
The vertical joint expansion / contraction device according to claim 1, wherein the contact portion is formed thin toward the clamping portion side . A vertical joint expansion / contraction device covering the vertical joint formed between the bridge girders,
Holding hardware fixed to bridge girders on both sides of the vertical joint;
A fastening plate screwed to the holding hardware with a bolt;
A packing that is sandwiched between the holding hardware and the fastening plate and covers the vertical joint,
The packing extends continuously in the longitudinal direction of the vertical joint,
The holding hardware is a contact portion that contacts the fastening plate;
A clamping part extending from the abutting part and sandwiching the packing with the fastening plate;
An insertion hole for the bolt,
The abutting portion, the vertical joints telescopic device you characterized in that it is formed thinner toward the clamping side. A vertical joint expansion / contraction device covering the vertical joint formed between the bridge girders,
Holding hardware fixed to bridge girders on both sides of the vertical joint;
A fastening plate screwed to the holding hardware with a bolt;
A packing that is sandwiched between the holding hardware and the fastening plate and covers the vertical joint;
A contact member sandwiched between the holding hardware and the fastening plate,
The packing extends continuously in the longitudinal direction of the vertical joint,
When the fastening plate in front Symbol bolts are screwed into the retaining hardware, tilt the holding hardware side the fastening plate as a fulcrum the contact member, the packing and the holding hardware and the fastening plate vertical joints telescopic device characterized in that interposed between the.

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