JP2016011490A - Construction method for expansion joint for highway bridge - Google Patents

Construction method for expansion joint for highway bridge Download PDF

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JP2016011490A
JP2016011490A JP2014132066A JP2014132066A JP2016011490A JP 2016011490 A JP2016011490 A JP 2016011490A JP 2014132066 A JP2014132066 A JP 2014132066A JP 2014132066 A JP2014132066 A JP 2014132066A JP 2016011490 A JP2016011490 A JP 2016011490A
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joint
plate
fixed
fixing
expansion joint
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昌三 栗村
Shozo Kurimura
昌三 栗村
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Abstract

PROBLEM TO BE SOLVED: To enable a plate-like joint member of an expansion joint to be firmly fixed to a steel plate deck, and enable a height position of the expansion joint to be adjusted as planned.SOLUTION: A construction method for an expansion joint for a highway bridge includes first and second fixing steps. In the first fixing step, a plurality of longitudinal ribs 2 are fixed to a joint part-side end of a steel plate deck 19 in such a manner as to be arranged in the longitudinal direction of the joint part. In the second fixing step, a back surface of a plate-like joint member 1 is fixed to the plurality of longitudinal ribs 2.

Description

本発明は、道路橋用伸縮継手の施行方法に関するものである。   The present invention relates to a method for implementing an expansion joint for a road bridge.

従来より、道路橋継目部に設けられ、互いに対向して当該継目部の長手方向に延びる一対の縦型の板状継手部材を備える道路橋用伸縮継手が知られている（例えば、非特許文献１）。一対の板状継手部材の間には遊間が形成されており、この遊間により道路橋の伸縮が吸収される。   DESCRIPTION OF RELATED ART Conventionally, the expansion joint for road bridges provided with a pair of vertical plate-shaped joint member which is provided in a road bridge joint part and extends in the longitudinal direction of the said joint part facing each other is known (for example, nonpatent literature) 1). A gap is formed between the pair of plate-like joint members, and the expansion and contraction of the road bridge is absorbed by this gap.

“橋梁用伸縮装置標準図集 第ＶＩ集” 日本道路ジョイント協会 平成１２年１月、Ｐ．［６−２６］“Expanding Devices for Bridge Extension Standard Collection Vol. VI” Japan Road Joint Association January 2000, p. [6-26]

ところで、片側ないし両側に鋼床版が存する道路橋継目部に伸縮継手を設置する場合、板状継手部材の背面に複数の縦リブを固着しておいて当該縦リブを鋼床版に固着することが考えられる。この施工方法によると、鋼床版に対して板状継手部材を強固に固定することができる。   By the way, when installing an expansion joint at a road bridge joint where a steel floor slab exists on one side or both sides, a plurality of vertical ribs are fixed to the back of the plate-like joint member, and the vertical ribs are fixed to the steel floor slab. It is possible. According to this construction method, the plate-like joint member can be firmly fixed to the steel deck.

しかし、上記の施工方法では、板状継手部材および縦リブが予め互いに固定されているので、縦リブを鋼床版に固着するときに板状継手部材の高さ位置が自ずと定まる。鋼床版の高さ位置が設計通りのものであれば問題はないが、そうでない場合には、板状継手部材の高さ位置も設計と異なったものになってしまう。板状継手部材の高さ位置が設計と異なったものになれば、走行性が悪化する等の問題が生じる。   However, in the above construction method, since the plate-like joint member and the vertical rib are fixed to each other in advance, the height position of the plate-like joint member is naturally determined when the vertical rib is fixed to the steel deck. There is no problem if the height position of the steel deck is as designed, but if not, the height position of the plate-like joint member will also be different from the design. If the height position of the plate-like joint member is different from the design, problems such as deterioration in running performance arise.

本発明は、かかる点に鑑みてなされたものであり、その目的は、伸縮継手の板状継手部材を鋼床版に対して強固に固定できると共に、当該伸縮継手の高さ位置を設計通りに調節できるようにすることにある。   The present invention has been made in view of such points, and its purpose is to firmly fix the plate-like joint member of the expansion joint to the steel deck and to set the height position of the expansion joint as designed. It is to be able to adjust.

請求項１に係る発明は、少なくとも片側に鋼床版が存する道路橋継目部に設けられ、互いに対向して上記継目部の長手方向に延びる一対の縦型の板状継手部材を備える道路橋用伸縮継手の施工方法を対象とする。そして、本発明は、上記鋼床版の上記継目部側の端部に、該継目部の長手方向に並ぶように複数の縦リブを固着する第１固着工程と、上記複数の縦リブに対して上記板状継手部材の背面を固着する第２固着工程とを含むことを特徴とする。   The invention according to claim 1 is provided for a road bridge provided with a pair of vertical plate-like joint members that are provided in a road bridge joint portion having a steel deck at least on one side and extend in the longitudinal direction of the joint portion so as to face each other. Targets construction methods for expansion joints. And this invention is the 1st adhering process which fixes a some vertical rib to the edge part of the said seam part side of the said steel floor slab so that it may align with the longitudinal direction of this seam part, and with respect to the said some vertical rib And a second fixing step of fixing the back surface of the plate-like joint member.

請求項１に係る発明では、鋼床版の継目部側の端部に複数の縦リブを固着した後に、当該縦リブに対して板状継手部材の背面を固着する。このため、板状継手部材の高さ位置を路面高さに合わせて調節しようとするときに、縦リブおよび鋼床版によって当該調節が妨げられることがない。したがって、伸縮継手の高さ位置を設計通りに調節することができる。また、複数の縦リブを介して、板状継手部材が鋼床版に対して強固に固定される。   In the invention which concerns on Claim 1, after fixing a some vertical rib to the edge part by the side of the joint part of a steel floor slab, the back surface of a plate-shaped coupling member is fixed to the said vertical rib. For this reason, when it is going to adjust the height position of a plate-shaped coupling member according to a road surface height, the said adjustment is not prevented by a vertical rib and a steel deck. Therefore, the height position of the expansion joint can be adjusted as designed. Further, the plate-like joint member is firmly fixed to the steel deck through the plurality of vertical ribs.

請求項２に係る発明は、上記請求項１に係る発明において、上記縦リブは、上記鋼床版の厚みよりも縦方向に長い固着面を有し、上記第２固着工程では、上記固着面に対して上記板状継手部材の背面を固着することを特徴とする。   The invention according to claim 2 is the invention according to claim 1, wherein the vertical rib has a fixed surface longer in the vertical direction than the thickness of the steel slab, and in the second fixing step, the fixed surface On the other hand, the back surface of the plate-like joint member is fixed.

請求項２に係る発明では、板状継手部材の背面が縦リブの固着面に対して固着される。この固着面は、鋼床版の厚みよりも縦方向に長いので、板状継手部材と縦リブとの固着がより強固なものになる。   In the invention which concerns on Claim 2, the back surface of a plate-shaped coupling member is fixed with respect to the fixing surface of a vertical rib. Since the fixing surface is longer in the vertical direction than the thickness of the steel deck, the fixing between the plate-like joint member and the vertical rib becomes stronger.

請求項１に係る発明によれば、縦リブおよび鋼床版によって妨げられることなく板状継手部材の高さ位置を調節することで、伸縮継手の高さ位置を設計通りに調節することができる。また、複数の縦リブを介して、板状継手部材を鋼床版に対して強固に固定することができる。   According to the first aspect of the present invention, the height position of the expansion joint can be adjusted as designed by adjusting the height position of the plate-like joint member without being obstructed by the vertical ribs and the steel deck. . Further, the plate-like joint member can be firmly fixed to the steel deck through the plurality of vertical ribs.

請求項２に係る発明によれば、板状継手部材を鋼床版に対してより強固に固定することができる。   According to the invention which concerns on Claim 2, a plate-shaped coupling member can be fixed more firmly with respect to a steel deck.

図１は、本発明の実施形態に係る伸縮継手を示す断面図である。FIG. 1 is a cross-sectional view showing an expansion joint according to an embodiment of the present invention. 図２は、第１固着工程について説明するための斜視図である。FIG. 2 is a perspective view for explaining the first fixing step. 図３は、第２固着工程について説明するための斜視図である。FIG. 3 is a perspective view for explaining the second fixing step. 図４は、モルタル打設工程について説明するための斜視図である。FIG. 4 is a perspective view for explaining a mortar placing process.

本発明の実施形態を図面に基づいて詳細に説明する。なお、以下の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。   Embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

−伸縮継手の構成−
図１において、１０Ａは橋台部、１０Ｂは鋼床版橋、１１は橋台部１０Ａ側の路面をなす舗装、１２は鋼床版橋１０Ｂ側の路面をなす舗装タイル、１３は遊間、１４は遊間１３を塞ぐように設けられた伸縮継手、１５は伸縮継手１４の背部の橋台部１０Ａ側に打設された後打ちコンクリートである。なお、図１〜図４では、鋼床版橋１０Ｂの桁を省略して示してある。 −Configuration of expansion joint−
In FIG. 1, 10A is an abutment part, 10B is a steel floor slab bridge, 11 is a pavement forming a road surface on the side of the abutment part 10A, 12 is a paving tile forming a road surface on the steel floor slab bridge 10B side, 13 is an open space, and 14 is an open space. An expansion joint 15 provided so as to close 13 is a post-cast concrete placed on the back of the expansion joint 14 on the abutment 10A side. 1 to 4, the girders of the steel floor slab bridge 10B are omitted.

伸縮継手１４は、一対の板状継手部材１と、橋台部１０Ａ側の板状継手部材１の背面に設けられた複数のアンカーボルト４と、鋼床版橋１０Ｂ側の板状継手部材１の背面に設けられた複数の縦リブ２と、一対の板状継手部材１の間に設けられたシール部材３とを備えている。   The expansion joint 14 includes a pair of plate-like joint members 1, a plurality of anchor bolts 4 provided on the back surface of the plate-like joint member 1 on the abutment portion 10A side, and the plate-like joint member 1 on the steel floor slab bridge 10B side. A plurality of vertical ribs 2 provided on the back surface and a seal member 3 provided between the pair of plate-like joint members 1 are provided.

一対の板状継手部材１は、所定の間隔をおいて互いに対向して道路橋継目部の長手方向に延びる縦型の平板状部材である。   The pair of plate-like joint members 1 are vertical flat plate-like members extending in the longitudinal direction of the road bridge joint portion so as to face each other at a predetermined interval.

一方の板状継手部材１を設置する橋台部１０Ａの端部には、切欠段部１６が形成されている。そして、アンカーボルト４は、切欠段部１６に予め植設されているＵ字筋１７ならびに通し筋１８と交差するように配設され、その交差部が溶接されてアンカーボルト４が切欠段部１６に固定されている。そして、後打ちコンクリート１５が一方の板状継手部材１の上端面と略平坦（面一）になるように切欠段部１６に打設されることにより、当該板状継手部材１が橋台部１０Ａに設置されている。   A notch step portion 16 is formed at the end portion of the abutment portion 10A where the one plate-like joint member 1 is installed. The anchor bolt 4 is disposed so as to intersect with the U-shaped line 17 and the through line 18 that are planted in advance in the notch step part 16, and the intersecting part is welded so that the anchor bolt 4 is notched. It is fixed to. Then, the post-cast concrete 15 is placed on the notch step portion 16 so as to be substantially flat (on the same plane) as the upper end surface of the one plate-like joint member 1, whereby the plate-like joint member 1 is placed on the abutment portion 10 </ b> A. Is installed.

また、他方の板状継手部材１を設置する鋼床版橋１０Ｂは鋼床版１９を備えており、この鋼床版１９の上面ないし当該板状継手部材１の背面には縦リブ２が、例えば溶接により固着されている。鋼床版１９の上側には、モルタル２０が打設されている。そして、その上に、他方の板状継手部材１の上端面と略平坦（面一）になるように舗装タイル１２が敷設されている。   The steel deck slab bridge 10B on which the other plate-like joint member 1 is installed has a steel deck 19 and the vertical ribs 2 are formed on the upper surface of the steel deck 19 or on the back of the plate-like joint member 1. For example, it is fixed by welding. A mortar 20 is placed on the upper side of the steel deck 19. And the paving tile 12 is laid on it so that it may become substantially flat (the same surface) with the upper end surface of the other plate-shaped coupling member 1.

縦リブ２は、例えば直角台形状の板状部材である。縦リブ２は、その固着面２ａ（図１で左側面）が板状継手部材１の背面に固着されている。図２に示すように、固着面２ａの縦方向の長さＬは、鋼床版１９の厚みＴよりも長い（Ｌ＞Ｔ）。固着面２ａの縦方向の長さＬは、例えば３０ｍｍであり、鋼床版１９の厚みＴは、例えば２０ｍｍである。   The vertical rib 2 is a plate member having a right trapezoidal shape, for example. The vertical rib 2 has a fixing surface 2 a (left side in FIG. 1) fixed to the back surface of the plate-like joint member 1. As shown in FIG. 2, the length L in the vertical direction of the fixing surface 2a is longer than the thickness T of the steel deck 19 (L> T). The length L in the vertical direction of the fixing surface 2a is, for example, 30 mm, and the thickness T of the steel deck 19 is, for example, 20 mm.

シール部材３は、道路橋継目部の長手方向に延びるゴム板を溝形（略Ｖ字状）に形成してなるものであって、一対の板状継手部材１の間に設けられている。具体的に、シール部材３は、一方の板状継手部材１に一端部が固定され、他方の板状継手部材１に他端部が固定されている。   The seal member 3 is formed by forming a rubber plate extending in the longitudinal direction of the road bridge joint portion into a groove shape (substantially V-shaped), and is provided between the pair of plate-like joint members 1. Specifically, the seal member 3 has one end fixed to one plate-like joint member 1 and the other end fixed to the other plate-like joint member 1.

−伸縮継手の施工方法−
次に、本実施形態に係る伸縮継手１４の施工方法について図２〜図３を参照しながら説明する。この施工方法は、第１固着工程および第２固着工程を含んでいる。 −Expansion joint construction method−
Next, the construction method of the expansion joint 14 according to the present embodiment will be described with reference to FIGS. This construction method includes a first fixing step and a second fixing step.

〈第１固着工程〉
図２に示すように、鋼床版１９の道路橋継目部側の端部に、当該継目部の長手方向に等間隔に並ぶように複数の縦リブ２を、例えば溶接により固着する。ここで、各縦リブ２を、固着面２ａと鋼床版１９の端面とが面一になるように当該鋼床版１９に固着する。 <First fixing step>
As shown in FIG. 2, a plurality of vertical ribs 2 are fixed to the end portion of the steel deck 19 on the road bridge joint portion side so as to be arranged at equal intervals in the longitudinal direction of the joint portion, for example. Here, each vertical rib 2 is fixed to the steel deck 19 so that the fixing surface 2a and the end surface of the steel deck 19 are flush with each other.

〈第２固着工程〉
図３に示すように、上記複数の縦リブ２に対して上記他方の板状継手部材１の背面を、当該板状継手部材１の高さ位置を設計高さ（路面高さ）に調節した後、例えば溶接により固着する。ここで、各縦リブ２の固着面２ａに対して当該板状継手部材１の背面を固着する。具体的に、固着面２ａの周縁部と板状継手部材１の背面とを溶接により固着する。なお、縦リブ２の固着面２ａのみでなく、鋼床版１９の端面に対しても板状継手部材１の背面を固着することが好ましい。 <Second fixing step>
As shown in FIG. 3, the height position of the plate-like joint member 1 is adjusted to the design height (road surface height) on the back surface of the other plate-like joint member 1 with respect to the plurality of vertical ribs 2. Then, it adheres, for example by welding. Here, the back surface of the plate-like joint member 1 is fixed to the fixing surface 2 a of each vertical rib 2. Specifically, the peripheral edge portion of the fixing surface 2a and the back surface of the plate-like joint member 1 are fixed by welding. In addition, it is preferable that the back surface of the plate-like joint member 1 is fixed not only to the fixing surface 2 a of the vertical rib 2 but also to the end surface of the steel deck 19.

〈モルタル打設工程〉
図４に示すように、鋼床版１９の上側に、縦リブ２の上面と略平坦（面一）になるようにモルタル２０を打設する。なお、縦リブ２の上面より高い位置までモルタル２０を打設してもよい。 <Mortar placing process>
As shown in FIG. 4, a mortar 20 is placed on the upper side of the steel deck 19 so as to be substantially flat (on the same plane) as the upper surface of the vertical rib 2. Note that the mortar 20 may be placed up to a position higher than the upper surface of the vertical rib 2.

〈その後の工程〉
その後、モルタル２０の上側に舗装タイル１２を敷設する。そして、上記一方の板状継手部材１のアンカーボルト４を切欠段部１６に固定し、後打ちコンクリート１５を打設することで伸縮継手１４の設置を完了する（図１を参照）。 <Subsequent steps>
Thereafter, the paving tile 12 is laid on the upper side of the mortar 20. And the anchor bolt 4 of said one plate-shaped coupling member 1 is fixed to the notch step part 16, and the installation of the expansion joint 14 is completed by casting the post-cast concrete 15 (refer FIG. 1).

−実施形態の効果−
本実施形態の施工方法では、縦リブ２および鋼床版１９によって妨げられることなく板状継手部材１の高さ位置を調節することで、伸縮継手１４の高さ位置を設計通りに調節することができる。 -Effect of the embodiment-
In the construction method of the present embodiment, the height position of the expansion joint 14 is adjusted as designed by adjusting the height position of the plate-like joint member 1 without being obstructed by the vertical ribs 2 and the steel deck 19. Can do.

また、各縦リブ２の固着面２ａに対して板状継手部材１の背面を固着することにより、当該板状継手部材１を鋼床版１９に対して強固に固定することができる。
〈その他の実施形態〉
上記実施形態の道路橋継目部は、道路橋本体と橋台との継目部であるが、本発明は、道路橋本体同士の継目部にも同様に適用可能である。 Further, by fixing the back surface of the plate-like joint member 1 to the fixing surface 2 a of each vertical rib 2, the plate-like joint member 1 can be firmly fixed to the steel deck 19.
<Other embodiments>
Although the road bridge joint part of the said embodiment is a joint part of a road bridge main body and an abutment, this invention is applicable similarly to the joint part of road bridge main bodies.

１ 板状継手部材
２ 縦リブ
２ａ 固着面
１４ 伸縮継手
１９ 鋼床版 DESCRIPTION OF SYMBOLS 1 Plate-shaped joint member 2 Vertical rib 2a Adhering surface 14 Expansion joint 19 Steel deck

Claims (2)

少なくとも片側に鋼床版が存する道路橋継目部に設けられ、互いに対向して上記継目部の長手方向に延びる一対の縦型の板状継手部材を備える道路橋用伸縮継手の施工方法であって、
上記鋼床版の上記継目部側の端部に、該継目部の長手方向に並ぶように複数の縦リブを固着する第１固着工程と、
上記複数の縦リブに対して上記板状継手部材の背面を固着する第２固着工程とを含む
ことを特徴とする道路橋用伸縮継手の施工方法。 A method for constructing an expansion joint for a road bridge provided with a pair of vertical plate-like joint members that are provided in a road bridge joint portion having a steel deck on at least one side and extend in the longitudinal direction of the joint portion. ,
A first fixing step of fixing a plurality of vertical ribs to the end of the steel floor slab on the side of the seam part so as to be aligned in the longitudinal direction of the seam part;
A construction method for an expansion joint for road bridges, comprising: a second fixing step of fixing a back surface of the plate-like joint member to the plurality of vertical ribs. 請求項１において、
上記縦リブは、上記鋼床版の厚みよりも縦方向に長い固着面を有し、
上記第２固着工程では、上記固着面に対して上記板状継手部材の背面を固着する
ことを特徴とする道路橋用伸縮継手の施工方法。 In claim 1,
The vertical rib has a fixed surface that is longer in the vertical direction than the thickness of the steel deck.
The construction method of the expansion joint for road bridges characterized in that, in the second fixing step, the back surface of the plate-like joint member is fixed to the fixing surface.
JP2014132066A 2014-06-27 2014-06-27 Construction method for expansion joint for highway bridge Pending JP2016011490A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141052U (en) * 1977-04-13 1978-11-08
JPS5616611U (en) * 1979-07-18 1981-02-13
JPS59188505U (en) * 1983-05-30 1984-12-14 新井　元之助 road joint parts
US4699541A (en) * 1983-02-02 1987-10-13 Z-Tech Enterprises Inc. Road joint element
JP2004278151A (en) * 2003-03-17 2004-10-07 Motonosuke Arai Expansion joint for viaduct
JP2011012500A (en) * 2009-07-04 2011-01-20 Yokohama Rubber Mbh Kk Elastic joint for bridge
JP2013053434A (en) * 2011-09-02 2013-03-21 Arai Motonosuke Water cut-off structure and method of road bridge joint part

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53141052U (en) * 1977-04-13 1978-11-08
JPS5616611U (en) * 1979-07-18 1981-02-13
US4699541A (en) * 1983-02-02 1987-10-13 Z-Tech Enterprises Inc. Road joint element
JPS59188505U (en) * 1983-05-30 1984-12-14 新井　元之助 road joint parts
JP2004278151A (en) * 2003-03-17 2004-10-07 Motonosuke Arai Expansion joint for viaduct
JP2011012500A (en) * 2009-07-04 2011-01-20 Yokohama Rubber Mbh Kk Elastic joint for bridge
JP2013053434A (en) * 2011-09-02 2013-03-21 Arai Motonosuke Water cut-off structure and method of road bridge joint part

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