JP2015200134A - Temporarily receiving jack fixation structure - Google Patents
Temporarily receiving jack fixation structure Download PDFInfo
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- JP2015200134A JP2015200134A JP2014080197A JP2014080197A JP2015200134A JP 2015200134 A JP2015200134 A JP 2015200134A JP 2014080197 A JP2014080197 A JP 2014080197A JP 2014080197 A JP2014080197 A JP 2014080197A JP 2015200134 A JP2015200134 A JP 2015200134A
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- jack
- bottom plate
- shaped steel
- viaduct
- receiving jack
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 9
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 18
- 230000003014 reinforcing effect Effects 0.000 abstract description 10
- 238000012790 confirmation Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
Description
本発明は、仮受けジャッキ固定構造に関するものであり、さらに詳細には供用中の高架橋を仮受け工事する際に、高架橋の損傷を効果的に防止することができる仮受けジャッキ固定構造に関するものである。 TECHNICAL FIELD The present invention relates to a temporary receiving jack fixing structure, and more particularly to a temporary receiving jack fixing structure capable of effectively preventing damage to a viaduct during temporary installation of a viaduct in service. is there.
長年使用による高架橋の橋脚ハンチ部の劣化に対する補修工事や、耐震化工事、免震化工事などをおこなう場合には、高架橋を使用しつつ、高架橋の支持構造を仮受け工事することが広く行われている(特許文献1)。 When repair work for deterioration of viaduct pier haunches due to long-term use, earthquake resistance work, seismic isolation work, etc., it is widely used to temporarily support the viaduct support structure while using the viaduct. (Patent Document 1).
従来、高架橋の橋脚ハンチ部の補修工事、耐震化工事、免震化工事などにあたっては、予め仮受けジャッキ上に加工した支圧板を設置し、支圧板と高架橋ハンチ面との間に無収縮モルタルを充填した後に、支圧板が動かないように、高架橋ハンチ部に後施工アンカーを打設して、支圧板を高架橋のハンチ部に固定することが行われている。 Conventionally, for repair work, earthquake resistance work, and seismic isolation work for viaduct pier haunch parts, a preloading plate that has been pre-processed on a temporary jack is installed, and a non-shrink mortar is placed between the support plate and the viaduct haunch surface. In order to prevent the bearing plate from moving after filling, a post-installed anchor is placed on the viaduct haunch part to fix the bearing plate to the viaduct haunch part.
図1は、従来、仮受けジャッキを支持するために使用されていた支圧板の一例を示す略斜視図である。 FIG. 1 is a schematic perspective view showing an example of a pressure bearing plate that has been conventionally used to support a temporary receiving jack.
図1に示されるように、従来、使用されていた支圧板30は、仮受けジャッキの上部に配置される底板31と、高架橋のハンチ部に当接されるフランジ板32と、底板31とフランジ板32とを連結するウェブ板33によって構成され、フランジ板32には、後施工アンカー(図示せず)を打設するための孔34が形成されている。 As shown in FIG. 1, conventionally used bearing plates 30 are a bottom plate 31 disposed on an upper portion of a temporary receiving jack, a flange plate 32 abutting against a viaducted haunch portion, a bottom plate 31 and a flange. The flange plate 32 is formed with a hole 34 for placing a post-installed anchor (not shown).
しかしながら、従来の方法は、供用中の高架橋に後施工アンカーを打設するためのアンカー孔を削孔することが必要で、高架橋の強度が低下するという問題があっただけでなく、さらに、高架橋のハンチ部は鉄筋の密度が高いため、予定通りに、後施工アンカーを打設することができず、また、高架橋のハンチ部内の鉄筋と後施工アンカーとが干渉するたびに、後施工アンカーを打設するための孔を別に削孔することが必要になり、高架橋の強度がより一層低下するという虞もあった。さらに、後施工アンカーを打設するため、事前鉄筋探査試験や、引張り試験、打設長確認試験などの各種鉄筋探査試験が必要であるという問題もあった。 However, the conventional method requires not only the drilling of an anchor hole for placing a post-installed anchor on a viaduct in service, and the strength of the viaduct is reduced. Because of the high density of reinforcing bars, the post-installed anchors cannot be placed as planned, and every time the reinforcing bars in the viaduct haunch part interfere with the post-installed anchors, It was necessary to cut the hole for placing separately, and there was a possibility that the strength of the viaduct would be further reduced. Furthermore, in order to place the post-installed anchor, there is a problem that various reinforcing bar exploration tests such as a preliminary reinforcing bar exploration test, a tensile test, and a placement length confirmation test are necessary.
したがって、本発明は、躯体に削孔を形成して、後施工アンカーを打設する必要がなく、躯体の強度の低下を防止することができ、事前鉄筋探査試験や、引張り試験、打設長確認試験などの各種鉄筋探査試験を行う必要がない仮受けジャッキ固定構造を提供することを目的とするものである。 Therefore, according to the present invention, it is not necessary to form a drilling hole in the casing and to place a post-installed anchor, and it is possible to prevent the strength of the casing from being lowered. An object of the present invention is to provide a temporary receiving jack fixing structure that does not require various reinforcing bar exploration tests such as a confirmation test.
本発明のかかる目的は、仮受けジャッキの上部に底板が配置され、高架橋のハンチ部と前記底板の間に、無収縮モルタルが充填されて、下面が略水平のジャッキ支持部が形成され、前記ジャッキ支持部の周囲が複数のH型鋼材によって、鉢巻状に囲まれた仮受けジャッキ固定構造によって達成される。 The object of the present invention is that a bottom plate is disposed on an upper portion of a temporary receiving jack, a non-shrink mortar is filled between a viaducting haunch portion and the bottom plate, and a jack support portion having a substantially horizontal bottom surface is formed, This is achieved by a temporary jack fixing structure in which the periphery of the jack support portion is surrounded by a plurality of H-shaped steel materials in a headband shape.
本発明によれば、仮受ジャッキの上部に底板が配置され、高架橋のハンチ部と底板の間に、無収縮モルタルが充填されて、下面が略水平のジャッキ支持部が形成されるから、従来のように、仮受ジャッキの上部に配置される底板31と、高架橋のハンチ部に当接されるフランジ板32と、底板31とフランジ板32とを連結するウェブ板33によって構成され、フランジ板32に、後施工アンカー(図示せず)を打設するための孔34が形成された支圧板を仮受ジャッキの上部に配置する必要がない。また、ジャッキ支持部が動かないように、ジャッキ支持部の周囲がH型鋼材によって、鉢巻状に囲まれて固定されるから、従来のように、支圧板と高架橋のハンチ部との間を後施工アンカーによって固定する必要がなく、したがって、躯体である高架橋に削孔を形成する必要がないから、躯体の強度の低下を防止することができ、事前鉄筋探査試験や、引張り試験、打設長確認試験などの各種鉄筋探査試験を行うことが不要になるので、仮受けジャッキを固定するために要するコストを低減することが可能になる。 According to the present invention, the bottom plate is disposed on the upper portion of the temporary jack, and the non-shrinking mortar is filled between the viaducted haunch portion and the bottom plate, thereby forming the jack support portion having a substantially horizontal bottom surface. As shown in the figure, the bottom plate 31 is arranged on the upper part of the temporary jack, the flange plate 32 is brought into contact with the viaducted haunch part, and the web plate 33 is connected to the bottom plate 31 and the flange plate 32. It is not necessary to arrange a bearing plate in which a hole 34 for placing a post-installed anchor (not shown) is formed in the upper portion of the temporary jack. Moreover, since the periphery of the jack support portion is surrounded and fixed in a headband shape by an H-shaped steel material so that the jack support portion does not move, the rear portion between the bearing plate and the viaducted hunch portion as in the past is fixed. Since it is not necessary to fix with construction anchors, and therefore there is no need to form drill holes in the viaduct, which is the case, it is possible to prevent the strength of the case from being reduced, pre-rebar exploration test, tensile test, installation length Since it is not necessary to perform various reinforcing bar exploration tests such as a confirmation test, it is possible to reduce the cost required for fixing the temporary support jack.
本発明の好ましい実施態様においては、前記底板の外周にアングルが溶接されて固定されている。 In a preferred embodiment of the present invention, an angle is welded and fixed to the outer periphery of the bottom plate.
本発明の好ましい実施態様においては、前記H型鋼材のフランジ部に補強のためのリブが取り付けられ、長辺方向の前記H型鋼材と短辺方向の前記H型鋼材がボルトで接合されている。 In a preferred embodiment of the present invention, a rib for reinforcement is attached to the flange portion of the H-shaped steel material, and the H-shaped steel material in the long side direction and the H-shaped steel material in the short side direction are joined by bolts. .
本発明によれば、躯体である高架橋に後施工アンカーを打設するための削孔を形成する必要がなく、躯体の強度の低下を防止することができ、さらに、事前鉄筋探査試験や、引張り試験、打設長確認試験などの各種鉄筋探査試験を行う必要がない仮受けジャッキ固定構造を提供することが可能になる。 According to the present invention, it is not necessary to form a drilling hole for placing a post-construction anchor on a viaduct that is a skeleton, and it is possible to prevent a decrease in the strength of the skeleton, and further, a pre-rebar exploration test or a tensile test It is possible to provide a temporary receiving jack fixing structure that does not require various reinforcing bar exploration tests such as a test and a placement length confirmation test.
図2は、本発明の好ましい実施態様にかかる仮受けジャッキ固定構造を示す略縦断面図である。 FIG. 2 is a schematic longitudinal sectional view showing a temporary receiving jack fixing structure according to a preferred embodiment of the present invention.
図2に示されるように、本発明の好ましい実施態様にかかる仮受けジャッキ固定構造においては、仮受けジャッキ1の上部には、底板2が配置され、高架橋6のハンチ部7と底板2の間に、無収縮モルタル3が充填されて、ジャッキ支持部5が形成されている。図1において、参照番号8で示されているのは、高架橋6の橋脚である。 As shown in FIG. 2, in the temporary receiving jack fixing structure according to a preferred embodiment of the present invention, the bottom plate 2 is disposed on the upper portion of the temporary receiving jack 1, and the space between the hunch portion 7 of the viaduct 6 and the bottom plate 2. Further, the non-shrink mortar 3 is filled to form the jack support portion 5. In FIG. 1, reference numeral 8 indicates a bridge pier of the viaduct 6.
図2に示されるように、無収縮モルタル3は、底板2が略水平になるように、高架橋6のハンチ部7と底板2の間に充填され、ジャッキ支持部5の長さ方向に沿って切断した断面は略直角三角形状をなしている。図示されてはいないが、ジャッキ支持部5のハンチ部7に当接する面9は粗面化されている。 As shown in FIG. 2, the non-shrink mortar 3 is filled between the hunch portion 7 of the viaduct 6 and the bottom plate 2 so that the bottom plate 2 is substantially horizontal, and along the length direction of the jack support portion 5. The cut cross section has a substantially right triangle shape. Although not shown in the drawing, the surface 9 of the jack support 5 that contacts the hunch 7 is roughened.
図3は、本発明の好ましい実施態様にかかる仮受けジャッキ固定構造の略分解斜視図である。 FIG. 3 is a schematic exploded perspective view of a temporary receiving jack fixing structure according to a preferred embodiment of the present invention.
図3に示されるように、ジャッキ支持部5の長辺方向は互いに固定された複数のH型鋼材10により、ジャッキ支持部5の短辺方向は、互いに固定された複数のH型鋼材11により、鉢巻状に囲まれて、固定されている。 As shown in FIG. 3, the long side direction of the jack support portion 5 is due to a plurality of H-shaped steel materials 10 fixed to each other, and the short side direction of the jack support portion 5 is due to a plurality of H-shaped steel materials 11 fixed to each other. Surrounded by a headband shape and fixed.
H型鋼材11のウェブには補強のためのリブ14が溶接されている。 A rib 14 for reinforcement is welded to the web of the H-shaped steel material 11.
図4は、互いに固定され、ジャッキ支持部5の長辺方向に固定される複数のH型鋼材10と、互いに固定され、ジャッキ支持部5の短辺方向に固定される複数のH型鋼材11の構造を示す略斜視図である。 FIG. 4 shows a plurality of H-shaped steel members 10 fixed to each other and fixed in the long side direction of the jack support portion 5, and a plurality of H-shaped steel materials 11 fixed to each other and fixed in the short side direction of the jack support portion 5. It is a schematic perspective view which shows this structure.
図4に示されるように、ジャッキ支持部5の長辺方向に固定される複数のH型鋼材10のうち、ジャッキ支持部5の短辺方向に固定されるH型鋼材11に当接するH型鋼材10の一方のフランジには、複数のボルト孔10aが形成され、ジャッキ支持部5の短辺方向に固定される複数のH型鋼材11のうち、両端に位置するH型鋼材11のフランジには、鋼板12が固定され、鋼板12には複数のボルト孔11aが形成されている。図示されてはいないが、H型鋼材10の複数のボルト孔10aと、H型鋼材11の複数のボルト孔11aには、ボルトが挿通され、ナットによって、H型鋼材10とH型鋼材11とが接合されている。 As shown in FIG. 4, among the plurality of H-shaped steel members 10 fixed in the long side direction of the jack support portion 5, the H shape that abuts on the H-type steel material 11 fixed in the short side direction of the jack support portion 5. A plurality of bolt holes 10 a are formed in one flange of the steel material 10, and a flange of the H-type steel material 11 located at both ends among the plurality of H-type steel materials 11 fixed in the short side direction of the jack support portion 5. The steel plate 12 is fixed, and the steel plate 12 has a plurality of bolt holes 11a. Although not shown, bolts are inserted into the plurality of bolt holes 10a of the H-shaped steel material 10 and the plurality of bolt holes 11a of the H-shaped steel material 11, and the H-shaped steel material 10 and the H-shaped steel material 11 are Are joined.
また、図3に示されるように、底板2の外周には、アングル16が溶接されて、固定されている。アングル16は、ジャッキ支持部5の上方に延びる面とその面に直交する二面の下方部分の一部を覆うように設けられている。 Further, as shown in FIG. 3, an angle 16 is welded and fixed to the outer periphery of the bottom plate 2. The angle 16 is provided so as to cover part of the surface extending upward of the jack support 5 and the lower part of the two surfaces orthogonal to the surface.
本実施態様によれば、仮受けジャッキ1の上部に底板2が配置され、高架橋6のハンチ部7と底板2の間に、無収縮モルタル3が充填されて、下面が略水平のジャッキ支持部5が形成されているから、従来のように、仮受ジャッキ1の上部に配置される底板31と、高架橋6のハンチ部7に当接されるフランジ板32と、底板31とフランジ板32とを連結するウェブ板33によって構成され、フランジ板32に、後施工アンカー(図示せず)を打設するための孔34が形成された支圧板を仮受ジャッキの上部に配置する必要がない。また、ジャッキ支持部5が動かないように、ジャッキ支持部5の長辺方向は複数のH型鋼材10により、ジャッキ支持部5の短辺方向は、複数のH型鋼材11によって、鉢巻状に囲まれて、固定されているから、従来のように、加工した支圧板と高架橋6のハンチ部7との間を後施工アンカーによって固定する必要がなく、したがって高架橋6のハンチ部7に削孔を形成する必要がないから、高架橋6のハンチ部7の強度の低下を防止することができ、後施工アンカーを打設する必要がないから、事前鉄筋探査試験や、引張り試験、打設長確認試験などの各種鉄筋探査試験を行うことが不要になるので、仮受けジャッキ1を固定するために要するコストを低減することが可能になる。 According to this embodiment, the bottom plate 2 is disposed on the upper portion of the temporary receiving jack 1, the non-shrink mortar 3 is filled between the hunch portion 7 of the viaduct 6 and the bottom plate 2, and the jack support portion whose bottom surface is substantially horizontal. 5, the bottom plate 31 disposed on the upper portion of the temporary jack 1, the flange plate 32 abutted against the hunch 7 of the viaduct 6, the bottom plate 31 and the flange plate 32, as in the prior art. It is not necessary to arrange a bearing plate in which a hole 34 for placing a post-installed anchor (not shown) is formed in the flange plate 32 at the upper portion of the temporary jack. Further, in order to prevent the jack support portion 5 from moving, the jack support portion 5 has a long side direction by a plurality of H-shaped steel materials 10, and the jack support portion 5 has a short side direction by a plurality of H-type steel materials 11 in a headband shape. Since it is surrounded and fixed, it is not necessary to fix between the processed bearing plate and the hunch part 7 of the viaduct 6 with a post-installed anchor as in the prior art. Since it is not necessary to form the hunch part 7 of the viaduct 6 and the post-installed anchor need not be driven, it is not necessary to place a post-installed anchor. Since it is not necessary to perform various reinforcing bar exploration tests such as a test, it is possible to reduce the cost required for fixing the temporary jack 1.
本発明は、以上の実施態様に限定されることなく、特許請求の範囲に記載された発明の範囲内で種々の変更が可能であり、それらも本発明の範囲内に包含されるものであることはいうまでもない。 The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.
たとえば、前記実施態様においては、複数のH型鋼材11のウェブには補強のためのリブ14が溶接されているのに対して、複数のH型鋼材10には補強のためのリブは取り付けられてはいないが、複数のH型鋼材10のウェブに補強のためのリブを設けることもできる。 For example, in the above-described embodiment, the ribs 14 for reinforcement are welded to the webs of the plurality of H-shaped steel members 11, whereas the ribs for reinforcement are attached to the plurality of H-shaped steel members 10. Although not provided, ribs for reinforcement may be provided on the webs of the plurality of H-shaped steel members 10.
1 仮受けジャッキ
2 底板
3 無収縮モルタル
5 ジャッキ支持部
6 高架橋
7 高架橋のハンチ部
8 橋脚
10 H型鋼材
10a ボルト孔
11 H型鋼材
11a ボルト孔
12 鋼板
14 リブ
16 アングル
DESCRIPTION OF SYMBOLS 1 Temporary receiving jack 2 Bottom plate 3 Non-shrink mortar 5 Jack support part 6 Viaduct 7 Hatch part of viaduct 8 Bridge pier 10 H-type steel material 10a Bolt hole 11 H-type steel material 11a Bolt hole 12 Steel plate 14 Rib 16 Angle
Claims (3)
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JP2014080197A JP6289230B2 (en) | 2014-04-09 | 2014-04-09 | Temporary jack fixing structure |
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JP2014080197A JP6289230B2 (en) | 2014-04-09 | 2014-04-09 | Temporary jack fixing structure |
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JP2015200134A true JP2015200134A (en) | 2015-11-12 |
JP6289230B2 JP6289230B2 (en) | 2018-03-07 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112830423A (en) * | 2019-11-25 | 2021-05-25 | 湖南省中南桥梁安装工程有限公司 | Bridge installation hoisting equipment |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN112830423A (en) * | 2019-11-25 | 2021-05-25 | 湖南省中南桥梁安装工程有限公司 | Bridge installation hoisting equipment |
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