JP5200825B2 - Construction method of arch rib of concrete arch bridge - Google Patents

Construction method of arch rib of concrete arch bridge Download PDF

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JP5200825B2
JP5200825B2 JP2008249452A JP2008249452A JP5200825B2 JP 5200825 B2 JP5200825 B2 JP 5200825B2 JP 2008249452 A JP2008249452 A JP 2008249452A JP 2008249452 A JP2008249452 A JP 2008249452A JP 5200825 B2 JP5200825 B2 JP 5200825B2
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concrete
arch
melane
construction
steel plate
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JP2010077742A (en
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明弘 上村
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Jfeエンジニアリング株式会社
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  The present invention relates to a method for constructing arch ribs in a concrete arch bridge.
  In the construction of concrete arch bridges, when building arch ribs, in order to obtain structural stability in the erection system, a pair of overhanging construction parts are constructed from both ends of the arch ribs, and the pair of overhanging construction parts A melanang method is employed in which an arch rib is formed by placing a steel melane material between them and then placing concrete on the melane material (see, for example, Patent Document 1 and Non-Patent Document 1).
  This Melan method was originally developed more than 100 years ago in Austria, but is still used in concrete arch bridges and can be applied to long arch bridges with a span length of 300m.
  Here, FIG. 4 shows an example (Patent Document 1) of an arch rib construction method.
  As shown in FIG. 4 (a), after constructing a pair of overhanging portions 13 by overhanging from both ends of the arch rib, these overhanging portions 13 are closed by the melane material 11 at the center position of the arch rib, As shown in FIG. 4 (b), this melane material 14 is wound up with concrete sequentially from its both ends using a wage 19 and, as shown in FIG. This completes the construction of the arch rib 10.
  FIG. 3 shows a cross-sectional view of a conventional example of the melan erection part 12 and corresponds to a cross-sectional view taken along line AA in FIG.
As shown in FIG. 3, the conventional melan erection part 98 has a structure in which four rounds of a steel melane material 90 are wound up with concrete 96. The melan material 90 includes a pair of left and right main structures 91 and a frame 92 that connects the pair of main structures 91. Each main structure 91 includes a box-type girder. It consists of an anti-tilt 93 and a horizontal 94.
JP 2003-049409 A Tomoaki Ito and three others, "Construction of Toshima Bridge (tentative name)-Composite Arch Bridge Using New Melan Method", Bridge and Foundation, September 2002, p2-11
  However, when forming the conventional melane erection part 98 shown in FIG. 3, it is necessary to wind four rounds of the steel melane material 90 with the concrete 96, so In order to assemble and place concrete 96, it is necessary to dismantle the formwork at an appropriate time after the concrete 96 is hardened. There was room for thought.
  The present invention has been made in view of the circumstances as described above, and an object of the present invention is to provide a method for constructing an arch rib of a concrete arch bridge capable of rationalizing construction when constructing an arch rib of a concrete arch bridge. It is what.
  In order to solve the above problems, the present invention has the following features.
[1] When constructing an arch rib of a concrete arch bridge, a pair of overhanging construction parts are constructed by overhanging construction from both ends of the arch rib, and a melane material is constructed between the pair of overhanging construction parts. In the construction method of the arch rib, in which the arch rib is formed by constructing the melane erection part by placing concrete on
The melane material is constituted by a main girder of T-shaped steels arranged in parallel, a bottom steel plate attached to a lower end of the main girder, and a side steel plate attached to a width end portion of the bottom steel plate, A method for constructing an arch rib of a concrete arch bridge , wherein concrete is placed on a flange and a web of a main girder of a material, and a melane erection part is constructed without winding up the melan material with concrete .
[2] A melanic material erected on the arch rib of a concrete arch bridge, the main girder of T-shaped steel arranged in parallel, the bottom steel plate attached to the lower end of the main girder, and the width end of the bottom steel plate The concrete is placed on the flange and web of the main girder, and the melane erection part is constructed without the melane being wound up with concrete. Melan material for concrete arch bridge.
  In the present invention, when the arch rib of the concrete arch bridge is constructed, it is not necessary to wind up the melanin material with concrete as in the conventional melanang method, and the construction can be rationalized.
  An embodiment of the present invention will be described with reference to the drawings.
  In one embodiment of the present invention, when constructing an arch rib of a concrete arch bridge, a pair of overhanging portions 13 are constructed by overhanging from both ends of the arch rib as shown in FIG. In the melan construction method in which the arch rib 10 is formed by laying the melane material 11 between the overhanging erection parts 13 and constructing the melane erection part 12 by placing concrete on the melane material 11. 1 shows a main girder 21 of T-shaped steel with projections arranged in parallel as shown in FIG. 1, a bottom steel plate 22 attached to the lower end of the main girder (T-shaped steel with projections) 21, and a bottom steel plate 22 The main girder (projection) of the melane material (steel panel) 20 is obtained by assembling the steel panel 20 constituted by the side steel plate 23 attached to the width end of the steel plate into an arch shape. And Da設 the concrete 26 to the flange and a portion of a web of tree T-shaped steel) 21 so as to build a Melan-installing portion 28.
  In other words, by assembling a steel plate panel 20 using the T-shaped steel 21 with projections, which has been proven as a steel-concrete composite floor slab bridge, into an arch shape, and then driving the concrete 26 into it, the steel- The concrete composite structure melane erection part 28 is constructed to form the arch rib 10 of the concrete arch bridge. The compression force is resisted by the concrete 26 and the bending moment is resisted by the steel-concrete composite structure (Melan erection part) 28. Thereby, also when constructing the arch rib of a concrete arch bridge, the member which is the characteristic of a steel-concrete composite floor slab bridge can be made slim and labor-saving.
That is, the following effects can be obtained.
(1) It is not necessary to wind up the melane material (steel plate panel) 20 with concrete, and since the steel plate panel 20 also serves as a formwork, the assembling / disassembling work of the support work can be omitted.
(2) Since the steel plate panel 20 is used as a strength member, the steel members (T-shaped steel 21, bottom steel plate 22, side steel plate 23) resist the part that receives the tensile force. Thus, a rational structure can be obtained.
(3) By rationalizing the construction as described above, it is possible to reduce dangerous work at high places and shorten the construction period.
  In some cases, as shown in a cross-sectional view in FIG. 2, concrete 26 is placed on the flange and web of the main girder (steel panel) 21 of the melan (steel panel) 20 and the entire web. The melan erection unit 29 may be constructed.
It is a cross-sectional view which shows the melane material and melanan erection part in one Embodiment of this invention. It is a cross-sectional view which shows the other melane erection part in one Embodiment of this invention. It is a cross-sectional view showing a conventional melane material and a melane erection part. It is explanatory drawing of the construction process in a melanang method.
Explanation of symbols
10 Arch ribs 11 Melan materials 12 Melan construction parts 13 Overhang construction parts 20 Melan materials 21 Main girder (T-shaped steel with protrusions)
22 Bottom steel plate 23 Side steel plate 26 Concrete 28 Melan erection part 29 Melan erection part 90 Melan material 91 Main structure 92 Frame 93 Tilt structure 94 Horizontal structure 98 Melan erection part

Claims (2)

  1. When constructing the arch rib of a concrete arch bridge, a pair of overhanging construction parts are constructed by overhanging from both ends of the arch rib, a melane material is constructed between the pair of overhanging construction parts, and concrete is applied to the melanic material. In the construction method of the arch rib that forms the arch rib by placing and constructing the melanang construction part,
    The melane material is constituted by a main girder of T-shaped steels arranged in parallel, a bottom steel plate attached to a lower end of the main girder, and a side steel plate attached to a width end portion of the bottom steel plate, A method for constructing an arch rib of a concrete arch bridge , wherein concrete is placed on a flange and a web of a main girder of a material, and a melane erection part is constructed without winding up the melan material with concrete .
  2. A melanic material erected on the arch ribs of a concrete arch bridge, which is attached to the main girder of T-shaped steel arranged in parallel, the bottom steel plate attached to the lower end of the main girder, and the width end of the bottom steel plate A concrete arch bridge, wherein a concrete is placed on the flange and web of the main girder, and the melane construction part is constructed without the melane being wound up with concrete. Melan wood for use.
JP2008249452A 2008-09-29 2008-09-29 Construction method of arch rib of concrete arch bridge Expired - Fee Related JP5200825B2 (en)

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Cited By (2)

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CN103711073A (en) * 2013-12-25 2014-04-09 中铁大桥勘测设计院集团有限公司 Fixed connecting structure of steel tube arch rib and steel box girder
CN104153295A (en) * 2014-07-21 2014-11-19 广东省基础工程公司 Self-compacting concrete jack-up pouring construction method for steel tube arch bridges

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CN101984189B (en) * 2010-11-10 2012-08-22 中交第二航务工程局有限公司 Construction method of large steel concrete composite multi-terrace slope skewback
CN102409603A (en) * 2011-07-29 2012-04-11 中铁大桥勘测设计院有限公司 Double-layer steel-truss concrete laminated arch structure and construction method thereof
CN102733310B (en) * 2012-06-29 2014-09-24 中铁大桥局集团有限公司 Lifting construction method for arch rib segments of steel box handle-basket arch bridge
CN103696372B (en) * 2014-01-04 2016-09-07 中铁二十五局集团第二工程有限公司 A kind of erection method of steel tube arch bridge arch center
CN104532738B (en) * 2014-12-24 2016-06-01 福州大学 A kind of device and constructional method improving the horizontal anti-seismic performance of concrete T beam bridge
CN105133505A (en) * 2015-08-04 2015-12-09 贵州桥梁建设集团有限责任公司 Steel arch whole translation device and translation method
CN105297630B (en) * 2015-10-10 2017-07-04 正平路桥建设股份有限公司 A kind of double limb steel pipe construction methods of main arch arch arc
CN111705676A (en) * 2020-07-06 2020-09-25 丁西焘 Flexible assembling equipment for bridge T steel and implementation method thereof

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JPS6015763B2 (en) * 1981-04-23 1985-04-22 P S Concrete
JPS6361443B2 (en) * 1981-08-25 1988-11-29
JPH0348285B2 (en) * 1984-03-14 1991-07-24 Kawasaki Steel Co
JP3678831B2 (en) * 1996-02-20 2005-08-03 川鉄橋梁鉄構株式会社 Steel-concrete composite floor slab bridge and its construction method
JP4425500B2 (en) * 2001-08-06 2010-03-03 三井住友建設株式会社 How to install arch ribs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711073A (en) * 2013-12-25 2014-04-09 中铁大桥勘测设计院集团有限公司 Fixed connecting structure of steel tube arch rib and steel box girder
CN104153295A (en) * 2014-07-21 2014-11-19 广东省基础工程公司 Self-compacting concrete jack-up pouring construction method for steel tube arch bridges

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