CN101457515B - In situ cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam construction method - Google Patents
In situ cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam construction method Download PDFInfo
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- CN101457515B CN101457515B CN2008102432216A CN200810243221A CN101457515B CN 101457515 B CN101457515 B CN 101457515B CN 2008102432216 A CN2008102432216 A CN 2008102432216A CN 200810243221 A CN200810243221 A CN 200810243221A CN 101457515 B CN101457515 B CN 101457515B
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Abstract
The invention relates to a construction method for a railway bridge deck prestressed concrete trough beam of an original position cast-in-situ steel truss beam, comprising the following technique processes of: firstly, arranging a trough beam construction bottom die platform and a trough beam hoisting system in the steel truss beam after the side spans of the flexible arc steel truss beam are erected; secondly, installing a trough beam die plate on the platform, binding reinforcing steel bar, casting concrete trough beam and completing the prestressed construction of the trough beam; thirdly,hoisting the trough beam by the trough beam hoisting system from the bottom die platform, forwards moving the bottom die platform in a sliding way to a next beam site, putting down and installing thetrough beam in position; fourthly, installing a walking supporting frame and a slideway of the hoisting system, dragging the hoisting system to a next beam segment site; and fifthly, repeating the above four steps to complete the original position cast-in-situ construction of the trough beam. The invention has the advantages that the problems of the transportation and the erection difficulty of the trough beam for erecting after a beam field is prefabricated in traditional practices and the perstressed tensioning space of the beam body in the in-site cast-in-situ construction are solved, the construction materials are common Bailey beams and profile steels, and the hoisting equipment is a jack which is economic and easy to operate.
Description
Technical field
What the present invention relates to is the job practices of cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam, it is bigger to be particularly useful in railroad bridge construction monolithic beam body tonnage, physical dimension is irregular, prefabricated transportation and set up all particular design beam body than difficulty, adopt the method cast-in-place in position back lifting to install, need not heavy mechanical equipment, operate more convenient.Belong to technical field of bridge construction.
Background technology
In existing high-speed railway, high-speed, the high degree of comfort in the train operation, little noise etc. require railway steel bridge to adopt ballasted deck, therefore in the flexible arched girder construction in part grand bridge main span steel purlin the prestress concrete channel beam are set.Generally, after the channel beam construction adopts precasting yard prefabricated, Beam transportation vehicle transports the beam body to bridge location, utilize the bridge formation machine to set up installation, requiring during construction to have suitable transportation and spanning equipment, simultaneously, because the channel beam tonnage and the physical dimension of dissimilar girder steel correspondences also are not quite similar, bring many inconvenience to Construction Arrangement, and do not have ripe corollary equipment transportation at present and set up the beam type of this kind particular design, this gives to apply and brings difficulty.
Summary of the invention
The present invention proposes the job practices of cast-in-situ prestress concrete beam on a kind of steel truss girder bridge, be intended to overcome the existing in prior technology defective, after establishing at Railway Steel Truss sliding roadway arch roof beam structure, girder steel railway face has construction space, and the girder steel crossbeam can bear the load that the cast-in-situ construction produces.Employing is cast-in-situ prestress concrete channel beam on the steel truss girder bridge bridge, successfully having solved the beam field in the traditional method sets up the transportation of channel beam and sets up a difficult problem after prefabricated, also solved simultaneously the problem in the beam body prestressed stretch-draw space in the on-the-spot cast-in-place construction, construction time cost-saving, easy operating.
Technical solution of the present invention: this method comprises following processing step:
One, after the flexible arched girder end bay in steel purlin sets up and finishes, arrangement of grooves ellbeam construction bottom die platform and channel beam tackling system in girder steel;
Two, mounting groove ellbeam template, assembling reinforcement on platform, build the channel beam concrete and finish the channel beam pre-stress construction;
Three, utilize the channel beam tackling system channel beam of slinging, make it break away from bottom die platform, slippage bottom die platform forward is to next beam position, and it is in place to transfer the mounting groove ellbeam;
Four, tackling system traveling support and slideway are installed, dilatory tackling system is to next beam sections position;
Five, repeat above one～four step construction, finish the original position pouring construction of channel beam.
Advantage of the present invention: do not have prefabricated site requirements, need not special haulage device and bridge support equipment, utilize auxiliary construction material and equipment conventional in the bridge construction, finish the construction of prestress concrete channel beam in the beam position, simple to operate, successfully having solved the beam field in the traditional method sets up the transportation of channel beam and sets up a difficult problem after prefabricated, also solved simultaneously the problem in the beam body prestressed stretch-draw space in the on-the-spot cast-in-place construction, construction time cost-saving, easy operating, be easy to control quality and safety, have bigger promotional value.
Description of drawings
Accompanying drawing 1 is the general arrangement structural representation of channel beam cast-in-situ bottom die platform and hangar system.
Fig. 1-the 1st wherein, channel beam cast-in-situ construction facade arrangement diagram, Fig. 1-2 is 1/2A-A, the 1/2B-B schematic diagram among Fig. 1-1.
Accompanying drawing 2 is channel beam cast-in-situ and installation steps schematic diagram.
Fig. 2-the 1st wherein, channel beam cast-in-situ and installation steps one facade arrangement diagram, Fig. 2-the 2nd, channel beam cast-in-situ and installation steps one side arrangement figure, Fig. 2-the 3rd, channel beam cast-in-situ and installation steps two facade arrangement diagrams, Fig. 2-the 4th, channel beam cast-in-situ and installation steps two side faces arrangement diagram, Fig. 2-the 5th, channel beam cast-in-situ and installation steps three facade arrangement diagrams, Fig. 2-the 6th, channel beam cast-in-situ and installation steps three side arrangement figure, Fig. 2-the 7th, channel beam cast-in-situ and installation steps four facade arrangement diagrams.
A-A among the figure is channel beam cast-in-situ platform and tackling system rear elevation, B-B is channel beam cast-in-situ platform and tackling system front elevation drawing, the 1st, steel truss girder has been installed, the 2nd, channel beam cast-in-situ bottom die platform, the 3rd, the lifting longeron, the 4th, lifting longeron front leg strut, the 5th, lifting longeron rear support leg, the 6th, lifting beam, the 7th, suspension rod, the 8th, the channel beam of having constructed, the 9th, the lifting jack, the 10th, the lifting joist, the 11st, the channel beam false stull, the 12nd, lifting longeron traveling support, the 13rd, front leg strut traveling slideway, the 14th, rear support leg traveling slideway, the 15th, channel beam construction formwork system.
The specific embodiment
One, after steel truss girder sets up installation, assembly unit channel beam cast-in-situ bottom die platform 2 in steel truss girder 1;
Two, on bottom die platform, 2 finish 15 installations of channel beam construction formwork, reinforcing bar binding, concrete is built and pre-stress construction, forms finished product channel beam 8;
Three, mounting groove ellbeam lifting longeron 3, lifting longeron front leg strut 4, lifting longeron rear support leg 5, lifting beam 6 and suspension rod 7, lifting jack 9 and lifting joist 10, and carry out channel beam false stull 11, eight lifting jack 9 on the synchronous stepped starting lifting beam 6, pan tank ellbeam 8 is slowly promoted, then with channel beam bottom die platform 2 and channel beam construction formwork 15 girder steel internode of slippage forward together, to next sheet channel beam design beam position, eight lifting jack 9 on the longeron 3 of stepped starting lifting synchronously slowly fall to pan tank ellbeam 8 on the channel beam bearing of steel truss girder 1;
Four, remove the lifting joist 10 at 8 ends of channel beam, lifting longeron traveling support 12 and the preceding traveling slideway 13 of lifting longeron, back traveling slideway 14 are installed, dilatory lifting longeron 3 is to next lifting sections design attitude; Five, repeat above-mentioned one～four step until the cast-in-situ construction of finishing whole channel beams.
Claims (4)
1. the job practices of cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam is characterized in that this method comprises following processing step:
One, after the flexible arched girder end bay in steel purlin sets up and finishes, arrangement of grooves ellbeam construction bottom die platform and channel beam tackling system in girder steel;
Two, mounting groove ellbeam construction formwork, assembling reinforcement on platform, build the channel beam concrete and finish the channel beam pre-stress construction;
Three, utilize the channel beam tackling system channel beam of slinging, make it break away from bottom die platform, slippage bottom die platform forward is to next beam position, and it is in place to transfer the mounting groove ellbeam;
Four, tackling system traveling support and slideway are installed, dilatory tackling system is to next beam sections position;
Five, repeat above one～four step construction, finish the original position pouring construction of channel beam.
2. the job practices of cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam according to claim 1 is characterized in that the intensity of described bottom die platform and channel beam tackling system and the needs that rigidity will satisfy channel beam cast and lifting.
3. the job practices of cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam according to claim 1, the cast-in-situ construction that it is characterized in that described channel beam is carried out in two steps with erection construction, finish the cast of channel beam concrete, prestressing force and sealing off and covering anchorage construction earlier, vertically lift by crane, transfer installation in position after the channel beam finished product forms again, need not carry out that channel beam is longitudinal and transverse to be moved.
4. the job practices of cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam according to claim 1 is characterized in that whole construction template system and tackling system are to finish the channel beam construction by the traction slippage, do not need other complicated running mechanism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102432216A CN101457515B (en) | 2008-12-26 | 2008-12-26 | In situ cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102432216A CN101457515B (en) | 2008-12-26 | 2008-12-26 | In situ cast-in-situ steel girder railway bridge deck pre-stress concrete channel beam construction method |
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| Publication Number | Publication Date |
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| CN101457515A CN101457515A (en) | 2009-06-17 |
| CN101457515B true CN101457515B (en) | 2010-09-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612058B (en) * | 2014-12-26 | 2016-05-25 | 中铁大桥勘测设计院集团有限公司 | A kind of construction method of buckstay flexible arch bridge |
| CN104695336B (en) * | 2015-01-15 | 2016-09-28 | 中铁大桥局集团第五工程有限公司 | The double-deck first up and then down stand construction method of Cast-in-situ Beam |
| CN107419653B (en) * | 2017-05-18 | 2019-06-25 | 郑卫忠 | A kind of spliced bridge and bridge jointing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994016169A1 (en) * | 1993-01-13 | 1994-07-21 | Deltatek Oy | Prefabricated steel-concrete composite beam |
| CN101324055A (en) * | 2008-08-06 | 2008-12-17 | 中铁大桥局股份有限公司 | Lifting equipment and method of box girder integral steel reinforcement framework |
-
2008
- 2008-12-26 CN CN2008102432216A patent/CN101457515B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994016169A1 (en) * | 1993-01-13 | 1994-07-21 | Deltatek Oy | Prefabricated steel-concrete composite beam |
| CN101324055A (en) * | 2008-08-06 | 2008-12-17 | 中铁大桥局股份有限公司 | Lifting equipment and method of box girder integral steel reinforcement framework |
Non-Patent Citations (2)
| Title |
|---|
| 杨齐海,王喜良.浅谈移动模架原位现浇简支箱梁.桥梁建设.2007, * |
| 江树生.移动模架原位现浇箱梁施工技术.山西建筑.2007,33(17), * |
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