CN103469735B - The mounting method of curve ultrahigh hollow column plate type pier top solid section template - Google Patents
The mounting method of curve ultrahigh hollow column plate type pier top solid section template Download PDFInfo
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- CN103469735B CN103469735B CN201310445084.5A CN201310445084A CN103469735B CN 103469735 B CN103469735 B CN 103469735B CN 201310445084 A CN201310445084 A CN 201310445084A CN 103469735 B CN103469735 B CN 103469735B
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Abstract
The invention discloses a kind of mounting method of curve ultrahigh hollow column plate type pier top solid section template, comprise the following steps: a job platform is set up in square pier outer platform both sides under the solid-section of bridge pier Dun Ding, be connected with outside the vertical stiff skeleton in bridge pier by steel work bottom pier outer platform; Affixed bracket support system inside vertical stiff skeleton near pier outer platform; Affixed steelframe braced structures above bracket support system, is lifted into prefabricated steel truss in steelframe braced structures, is connected to by concrete cover above steel truss, forms the mounting platform of bridge pier pier top solid section template; Finally bridge pier pier top solid section template being propped up stands on mounting platform, then make it be connected with the horizontal stiff skeleton in bridge pier and vertical stiff skeleton by split bolt, and shape is in aggregates.Mounting method of the present invention is not by limiting by construction plant, and safe, economic, practical, can realize by bridge pier pier top hollow section to solid-section transition, stressed globality is better.
Description
Technical field
The invention belongs to bridge pier technical field of building construction, particularly relate to the mounting method of a kind of bridge pier pier top solid section template.
Background technology
For the bridge of most of height at below 50m, bridge pier mostly is solid pier, and solid pier is generally by arranging bent cap for supporting, distributing and transmit the load of superstructure; For most of hollow pier, when pier top solid section template is installed, generally solve vertical load-bearing problem by setting up scaffold.
In the bridge construction crossing over large deep valley is built, sometimes the high pier building more than 100 meters is needed, to conduct oneself with dignity the load brought to basis for alleviating bridge pier, the form that bridge pier adopts thin-walled hollow post board-like, the board-like bridge pier of parabola thin-walled hollow post is compared solid pier and is had that sectional area is little, section modulus large, from the good feature of heavy and light, the rigidity of structure and intensity.Such bridge pier can form plastic hinge at desirable position under rarely occurred earthquake effect, and earthquake energy, to protect the safety of main body pier stud and basis.But, when such bridge pier pier top solid-section construction, many constructions inconvenience will be brought according to traditional construction method, as: (1) adopts shaped form bridge pier, and the inner space of pier top solid-section construction is narrow and small; (2) such bridge pier is due to highly more than 100 meters, and the volume of concrete of solid-section and pier top upper tank beam is relatively large, so have higher requirement to the intensity of support.Therefore, need a kind of new method to meet requirement of strength and to reach economy and practical purpose in the construction of this type of bridge pier.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, provide one by construction plant restriction, safe, economic, practical, can realize by the mounting method of bridge pier pier top hollow section to solid-section transition, the better curve of stressed globality (such as 1.6 parabolas) super-high (even more than 100m) hollow column board-like bridge pier pier top solid section template.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of mounting method of curve ultrahigh hollow column plate type pier top solid section template, comprises the following steps:
(1) under the solid-section of described bridge pier Dun Ding, a job platform is set up in square pier outer platform both sides, bottom pier outer platform by steel work be connected outside the vertical stiff skeleton in bridge pier and form a stressed entirety;
(2) the affixed bracket support system of difference inside the vertical stiff skeleton near pier outer platform;
(3) affixed steelframe braced structures above described bracket support system, being lifted into by prefabricated steel truss in described steelframe braced structures makes it be connected with steelframe braced structures again, again prefabricated concrete cover is connected to above steel truss, forms the mounting platform of bridge pier pier top solid section template;
(4) finally bridge pier pier top solid section template is propped up and stand on described mounting platform, then make it be connected with the horizontal stiff skeleton in bridge pier and vertical stiff skeleton by split bolt, and shape is in aggregates.
The mounting method of above-mentioned curve ultrahigh hollow column plate type pier top solid section template, preferably, in described step (1), connect bottom pier outer platform and comprise channel-section steel and screw-thread steel with the steel work of vertical stiff skeleton in bridge pier, the oblique layout of channel-section steel, its apical support pier outer platform, connecting thread steel one end, bottom; Screw-thread steel is secured on the vertical stiff skeleton in bridge pier through bridge pier.
The mounting method of above-mentioned curve ultrahigh hollow column plate type pier top solid section template, preferably, in described step (2), bracket support system comprises pre-buried i iron and bracket, first pre-buried i iron to be secured to before concrete steel formwork in bridge pier on vertical stiff skeleton inside conjunction bridge pier, be connected with pre-buried i iron by bracket by anchor slab, on the downside of bracket, anchor slab is connected with vertical stiff skeleton by screw-thread steel again.
The mounting method of above-mentioned curve ultrahigh hollow column plate type pier top solid section template, preferably, in described step (2), the vertical stiff skeleton of pre-buried i iron and its side passes through solder design, the anchor slab of pre-buried i iron and its opposite side is affixed by weld seam, and weld seam is two fillet welds.
The mounting method of above-mentioned curve ultrahigh hollow column plate type pier top solid section template, preferably, in described step (3), steelframe braced structures comprises to be located at longitudinal i iron above bracket, to be positioned at the gooseneck on this longitudinal i iron and the longitudinal direction be located on gooseneck distributes girder steel, the longitudinal direction that described steel truss is lifted into steelframe braced structures is distributed above girder steel, and by securing member with longitudinally distribute girder steel and be connected.
The mounting method of above-mentioned curve ultrahigh hollow column plate type pier top solid section template, preferably, in described step (3), the size of described cover plate is greater than steel truss upper dimension, and cover plate both sides arrange pre-embedded bolt and i iron built-in fitting, in time building pier top solid section template concrete, make cover plate and solid-section connect into an entirety, make it be connected with steel truss by pre-embedded bolt.
Compared with prior art, the invention has the advantages that: method of the present invention has taken into full account that superrelation on curve type bridge pier pier top solid-section construction space is narrow and small, primary concreting volume of concrete large, to support system requirement of strength high, by setting up job platform, bracket support system, steelframe braced structures, steel truss and mounting platform etc. successively at Dun Ding, achieve the board-like bridge pier of superrelation on curve type hollow column and similar configuration bridge pier well by the transition of pier top hollow section to solid-section, and make pier top solid-section and pier top upper tank beam form a stressed entirety.Mounting method of the present invention had both facilitated construction handling, also improved intensity, and the ingenious support system using various forms of steel structure girder composition of the present invention simultaneously, compared with the concrete beam braced structures of routine, not only alleviates deadweight, simultaneously for convenience detach again.Mounting method of the present invention solves that shaped form bridge pier pier top solid-section construction space is narrow and small well, primary concreting volume of concrete is large and to support intensity and the construction technology difficult problem such as stability requirement is high, reach safety, economic, practical construction object, can widely use in the construction of similar graph super-high bridge pier pier top solid-section.
Accompanying drawing explanation
Fig. 1 is the overall main TV structure schematic diagram of curve ultrahigh hollow column plate type pier top solid section model sheetinstallat in the embodiment of the present invention.
Fig. 2 is curve ultrahigh hollow column plate type pier top solid section model sheetinstallat partial front elevation view in the embodiment of the present invention.
Fig. 3 is curve ultrahigh hollow column plate type pier top solid section model sheetinstallat partial top view in the embodiment of the present invention.
Fig. 4 is curve ultrahigh hollow column plate type pier top solid section template and pier top case beam connection diagram (master looks) in the embodiment of the present invention.
Marginal data:
1, pier stud; 2, vertical stiff skeleton; 3, horizontal stiff skeleton; 4, pier outer platform; 5, job platform; 6, fining twisted steel; 7, channel-section steel; 8, pre-buried i iron; 9, anchor slab; 10, bracket; 11, gooseneck; 12, longitudinally girder steel is distributed; 13, steel truss; 14, cover plate; 15, split bolt; 16, solid section template; 17, pier top case beam.
Detailed description of the invention
Below in conjunction with Figure of description and concrete preferred embodiment, the invention will be further described, but protection domain not thereby limiting the invention.
Embodiment:
A mounting method for curve ultrahigh hollow column plate type pier top solid section template as shown in Figure 1 to 4, comprises the following steps:
(1) under the solid-section of the Dun Ding of bridge pier shown in Fig. 2, square pier outer platform 4 both sides I18 i iron (or other little shaped steel) are set up in length and breadth, top lay scaffold floor form a job platform 5, adopt 20a channel-section steel by steel work with the vertical stiff skeleton of vertical stiff skeleton 2(2 in bridge pier 1 bottom pier outer platform 4) outside be connected and form a stressed entirety; Connect bottom pier outer platform 4 and comprise channel-section steel 7 and fining twisted steel 6, the oblique layout of channel-section steel 7, its apical support pier outer platform 4 with the steel work of vertical stiff skeleton 2 in pier stud 1, bottom connects fining twisted steel 6 one end; Fining twisted steel 6 bolt is secured on vertical stiff skeleton 2 through bridge pier 1, pier outer platform 4 is connected in aggregates with bridge pier, to ensure the safety of the job platform 5 on pier outer platform 4 top.
(2) the affixed bracket support system of difference inside the vertical stiff skeleton 2 near pier outer platform 4.As shown in Figure 2, the steel plate that bracket support system comprises pre-buried i iron 8, anchor slab 9(anchor slab 9 adopts 14mm ~ 16mm) and bracket 10, when the present embodiment Bridge Pier Construction is to the design attitude of pre-buried i iron 8 with anchor slab 9, first pre-buried i iron 8 to be secured to before concrete steel formwork in bridge pier on vertical stiff skeleton 2 inside conjunction bridge pier, be connected with pre-buried i iron 8 by bracket 10 by anchor slab 9, on the downside of bracket 10, anchor slab 9 is connected with bridge pier 1 and vertical stiff skeleton 2 by fining twisted steel 6 bolt again.Pre-buried i iron 8 passes through solder design with the vertical stiff skeleton 2 of its side, same affixed by weld seam between pre-buried i iron 8 and the anchor slab 9 of its opposite side, adopt two fillet weld, and weld bead height gets 10mm; Anchor slab 9 opposite side is burn-on bracket 10, and bracket 10 anchors into 10cm in pier stud 1.
(3) as shown in Figures 2 and 3, when pier stud 1 concrete below the solid-section of pier top reaches design strength, remove pier shaft internal mold, affixed steelframe braced structures above above-mentioned bracket support system, more prefabricated steel truss 13 is lifted in steelframe braced structures makes it be connected with steelframe braced structures.The steelframe braced structures of the present embodiment comprises to be located at longitudinal i iron above bracket 10, to be positioned at the gooseneck 11 on this longitudinal i iron and a group of being located on gooseneck 11 longitudinally distributes girder steel 12, gooseneck 11 is each side connected with bracket 10 by two longitudinal i iron (I36a), for ensureing the resistance to overturning of steelframe braced structures, arrange above gooseneck 11 and longitudinally distribute girder steel 12 to make gooseneck 11 uniform stressed, gooseneck 11 all selects I36a i iron (generally the material of the two needs identical) with longitudinal girder steel 12 that distributes.After the installation of steelframe braced structures, the longitudinal direction Q345 steel truss 13 of precast assembly being lifted into steelframe braced structures is distributed above girder steel 12, gooseneck 11 and longitudinally distributes girder steel 12, longitudinal direction distributes between girder steel 12 and steel truss 13 and is all bolted.Again by prefabricated concrete cover 14 handling above steel truss 13, and make it be connected on steel truss 13, form the mounting platform of bridge pier pier top solid section template.Cover plate 14 precast concrete grade is not less than C35, the size of cover plate 14 is greater than steel truss 13 upper dimension, and cover plate 14 both sides arrange the I20a i iron built-in fitting of pre-embedded bolt and long 70cm, expose 40cm, in time building pier top solid section template concrete, make cover plate 14 and solid-section connect into an entirety, by pre-embedded bolt, it is connected with steel truss 13, before lifting cover plate 14, concrete springback detection is carried out to it, ensure that concrete strength reaches more than 70% of design strength and just lifts.Cover plate 14 as a part for pier top solid-section, without the need to remove.
(4) finally the solid section template 16 of bridge pier Dun Ding is stood on pier stud 1 and mounting platform, then make it be connected with the horizontal stiff skeleton 3 in bridge pier and vertical stiff skeleton 2 by split bolt 15, and shape is in aggregates.As shown in Figure 4, the left and right sides, solid section template 16 top, arrange I36a i iron in length and breadth, as the part be connected with pier top case beam 17, i iron crossbeam bottom is connected with solid section template 16 with fining twisted steel 6 bolt by channel-section steel 7.
Figure 1 shows that the present embodiment curve ultrahigh hollow column plate type pier top solid section model sheetinstallat overall structure is illustrated, bottom Bridge Pier Construction to pier top solid-section during pier stud 1, according to above-mentioned mounting method, solid section template 16 can be stood on pier stud 1, and form a stressed entirety by the structural system arranging the present embodiment to make solid section template 16 and pier stud 1.As shown in Figure 4, when pier top case beam 17 is constructed, the mode by burying profile steel bracket underground forms the stress system bottom pier top case beam 17, steel bracket by through the fining twisted steel of pier shaft and pier shaft affixed.
Claims (5)
1. a mounting method for curve ultrahigh hollow column plate type pier top solid section template, comprises the following steps:
(1) under the solid-section of described bridge pier Dun Ding, a job platform is set up in square pier outer platform both sides, bottom pier outer platform by steel work be connected outside the vertical stiff skeleton in bridge pier and form a stressed entirety;
(2) the affixed bracket support system of difference inside the vertical stiff skeleton near pier outer platform; In this step, described bracket support system comprises pre-buried i iron and bracket, inside integration bridge pier before concrete steel formwork, first pre-buried i iron is secured on the vertical stiff skeleton in bridge pier, be connected with pre-buried i iron by described bracket by anchor slab, on the downside of bracket, anchor slab is connected with vertical stiff skeleton by screw-thread steel again;
(3) affixed steelframe braced structures above described bracket support system, being lifted into by prefabricated steel truss in described steelframe braced structures makes it be connected with steelframe braced structures again, again prefabricated concrete cover is connected to above steel truss, forms the mounting platform of bridge pier pier top solid section template;
(4) finally bridge pier pier top solid section template is propped up and stand on described mounting platform, then make it be connected with the horizontal stiff skeleton in bridge pier and vertical stiff skeleton by split bolt, and shape is in aggregates.
2. the mounting method of curve ultrahigh hollow column plate type pier top solid section template according to claim 1, it is characterized in that: in described step (1), connect bottom pier outer platform and comprise channel-section steel and screw-thread steel with the steel work of vertical stiff skeleton in bridge pier, the oblique layout of channel-section steel, its apical support pier outer platform, connecting thread steel one end, bottom; Screw-thread steel is secured on the vertical stiff skeleton in bridge pier through bridge pier.
3. the mounting method of curve ultrahigh hollow column plate type pier top solid section template according to claim 1 and 2, it is characterized in that: in described step (2), the vertical stiff skeleton of pre-buried i iron and its side passes through solder design, the anchor slab of pre-buried i iron and its opposite side is affixed by weld seam, and weld seam is two fillet welds.
4. the mounting method of curve ultrahigh hollow column plate type pier top solid section template according to claim 3, it is characterized in that: in described step (3), steelframe braced structures comprises to be located at longitudinal i iron above bracket, to be positioned at the gooseneck on this longitudinal i iron and the longitudinal direction be located on gooseneck distributes girder steel, the longitudinal direction that described steel truss is lifted into steelframe braced structures is distributed above girder steel, and by securing member with longitudinally distribute girder steel and be connected.
5. the mounting method of curve ultrahigh hollow column plate type pier top solid section template according to claim 4, it is characterized in that: in described step (3), the size of described cover plate is greater than steel truss upper dimension, and cover plate both sides arrange pre-embedded bolt and i iron built-in fitting, in time building pier top solid section template concrete, make cover plate and solid-section connect into an entirety, make it be connected with steel truss by pre-embedded bolt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310445084.5A CN103469735B (en) | 2013-09-26 | 2013-09-26 | The mounting method of curve ultrahigh hollow column plate type pier top solid section template |
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| CN201310445084.5A CN103469735B (en) | 2013-09-26 | 2013-09-26 | The mounting method of curve ultrahigh hollow column plate type pier top solid section template |
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| CN103469735A CN103469735A (en) | 2013-12-25 |
| CN103469735B true CN103469735B (en) | 2015-11-04 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195954B (en) * | 2014-08-29 | 2016-08-24 | 上海建工七建集团有限公司 | Overhead column erection without scaffolding platform and erection method thereof |
| CN106012848B (en) * | 2016-06-08 | 2018-02-06 | 江苏燕宁建设工程有限公司 | A kind of pre-buried bracket construction method of cast-in-situ box girder and bridge |
| CN108755441B (en) * | 2018-08-07 | 2024-03-26 | 宁波交通工程建设集团有限公司 | Variable-section high pier turning structure and construction method |
| CN111910537B (en) * | 2020-08-28 | 2021-11-12 | 河南省正航建设工程有限公司 | Space truss reinforcing system of bridge double-limb pier |
| CN114457699B (en) * | 2022-03-31 | 2024-08-23 | 江苏润扬大桥发展有限责任公司 | Platform device for oversized cable bridge transportation equipment |
| CN114635368B (en) * | 2022-04-24 | 2024-07-19 | 重庆高速公路集团有限公司 | Bridge hollow pier top construction support and template nondestructive external dismantling method |
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| JP3967997B2 (en) * | 2002-11-06 | 2007-08-29 | 新日本製鐵株式会社 | Three-dimensional ramen type elevated structure |
| CN201738231U (en) * | 2010-07-15 | 2011-02-09 | 中铁第一勘察设计院集团有限公司 | Post plate type hollow high pier |
| CN202509404U (en) * | 2012-04-17 | 2012-10-31 | 重庆亲禾预制品有限公司 | High-pier single-column capping beam framework construction support system |
| CN103306208A (en) * | 2013-07-05 | 2013-09-18 | 中南大学 | Formwork creeping method for novel 1.6 parabola-shaped four-column type hollow variable section high pier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2632922B2 (en) * | 1988-05-16 | 1997-07-23 | 大成建設株式会社 | Bridge construction method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3967997B2 (en) * | 2002-11-06 | 2007-08-29 | 新日本製鐵株式会社 | Three-dimensional ramen type elevated structure |
| CN201738231U (en) * | 2010-07-15 | 2011-02-09 | 中铁第一勘察设计院集团有限公司 | Post plate type hollow high pier |
| CN202509404U (en) * | 2012-04-17 | 2012-10-31 | 重庆亲禾预制品有限公司 | High-pier single-column capping beam framework construction support system |
| CN103306208A (en) * | 2013-07-05 | 2013-09-18 | 中南大学 | Formwork creeping method for novel 1.6 parabola-shaped four-column type hollow variable section high pier |
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