CN103469735A - Method for mounting curve ultrahigh hollow column plate type pier top solid section template - Google Patents

Method for mounting curve ultrahigh hollow column plate type pier top solid section template Download PDF

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Publication number
CN103469735A
CN103469735A CN2013104450845A CN201310445084A CN103469735A CN 103469735 A CN103469735 A CN 103469735A CN 2013104450845 A CN2013104450845 A CN 2013104450845A CN 201310445084 A CN201310445084 A CN 201310445084A CN 103469735 A CN103469735 A CN 103469735A
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China
Prior art keywords
pier
solid
steel
template
bridge pier
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CN2013104450845A
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CN103469735B (en
Inventor
杨小礼
刘义立
杨子汉
任高峰
方哲
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Central South University
China Railway 20th Bureau Group Corp
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Central South University
China Railway 20th Bureau Group Corp
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Priority to CN201310445084.5A priority Critical patent/CN103469735B/en
Publication of CN103469735A publication Critical patent/CN103469735A/en
Application granted granted Critical
Publication of CN103469735B publication Critical patent/CN103469735B/en
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Abstract

The invention discloses a method for mounting a curve ultrahigh hollow column plate type pier top solid section template. The method comprises the following steps of erecting an operation platform on each of the two sides of a pier outer platform below a solid section of a pier top, wherein the bottom of the pier outer platform is connected with the outer side of a vertical steel framework in the pier through a steel structure; fixedly connecting a bracket supporting system to the inner side of the vertical steel framework close to the pier outer platform; fixedly connecting a steel frame supporting structure to the upside of the bracket supporting system, lifting and mounting a prefabricated steel truss to the steel frame supporting structure, and connecting a concrete cover plate to the upside of the steel truss to form a mounting platform of the pier top solid section template; finally, erecting the pier top solid section template on the mounting platform, connecting the pier top solid section template to a horizontal steel framework and the vertical steel framework in the pier through split bolts, and forming a whole. The mounting method provided by the invention is not limited by a construction field and is safe, economic and practical, the transition from a hollow section to the solid section of the pier top can be realized, and the stress integrity is better.

Description

The mounting method of the solid section template in superrelation on curve type hollow column board-like bridge pier pier top
Technical field
The invention belongs to the bridge pier technical field of building construction, relate in particular to the mounting method of the solid section template in a kind of bridge pier pier top.
Background technology
Bridge for most of height below 50m, bridge pier mostly is solid bridge pier, and solid bridge pier is generally by arranging the load of bent cap for support, distribution and transmission superstructure; For most of hollow piers, solid section of top of pier template generally solves vertical load-bearing problem by setting up scaffold while installing.
In the bridge construction of crossing over large deep valley is built, sometimes need to build the high pier more than 100 meters, the load of for alleviating bridge pier, conducting oneself with dignity and bringing to basis, bridge pier adopts the board-like form of thin-walled hollow post, and the board-like bridge pier of parabola thin-walled hollow post compares solid bridge pier and have that sectional area is little, section modulus large, from heavy and light, the rigidity of structure and intensity characteristics preferably.Such bridge pier can form plastic hinge at desirable position under the rarely occurred earthquake effect, and earthquake energy, with the safety on protection main body pier stud and basis.Yet, when the solid section construction in such bridge pier pier top, if adopt traditional job practices will bring many construction inconvenience, as: (1) adopts the shaped form bridge pier, and the inner space of the pier solid section construction in top is narrow and small; (2) such bridge pier is owing to highly surpassing 100 meters, and the solid section volume of concrete with pier top upper tank beam is relatively large, so the intensity of support is had to higher requirement.Therefore, in the construction of this type of bridge pier, need a kind of new method to meet requirement of strength and reach economy and practical purpose.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of be not subject to construction plant restriction, safe, economic, practical, can realize for example, the mounting method to solid section transition, the solid section template in the better curve of stressed globality (1.6 parabolas) super-high (even more than 100m) hollow column board-like bridge pier pier top by bridge pier pier top hollow section.
For solving the problems of the technologies described above, the mounting method that the technical scheme that the present invention proposes is the solid section template in a kind of superrelation on curve type hollow column board-like bridge pier pier top comprises the following steps:
(1) set up a job platform in the solid section lower square pier outer platform both sides of described bridge pier Dun Ding, pier outer platform bottom by steel work be connected outside vertical stiff skeleton in bridge pier and form a stressed integral body;
(2) near the inboard affixed bracket support system respectively of the vertical stiff skeleton pier outer platform;
(3) affixed steelframe braced structures above described bracket support system, prefabricated steel truss is lifted on described steelframe braced structures it is connected with the steelframe braced structures again, again prefabricated concrete cover is connected to the steel truss top, forms the mounting platform of the solid section template in bridge pier pier top;
(4) finally the bridge pier pier is pushed up to solid section formwork support arrangement on described mounting platform, then by split bolt, it is connected with vertical stiff skeleton with the horizontal stiff skeleton in bridge pier, and forms an integral body.
The mounting method of the solid section template in above-mentioned superrelation on curve type hollow column board-like bridge pier pier top, preferably, in described step (1), the steel work that connects vertical stiff skeleton in pier outer platform bottom and bridge pier comprises channel-section steel and screw-thread steel, the oblique layout of channel-section steel, its apical support pier outer platform, bottom connecting thread steel one end; Screw-thread steel is secured on the vertical stiff skeleton in bridge pier through bridge pier.
The mounting method of the solid section template in above-mentioned superrelation on curve type hollow column board-like bridge pier pier top, preferably, in described step (2), the bracket support system comprises pre-buried i iron and bracket, first pre-buried i iron was secured to bridge pier before closing the inboard concrete steel template of bridge pier on vertical stiff skeleton, by anchor slab, bracket is connected with pre-buried i iron, bracket downside anchor slab is connected with vertical stiff skeleton by screw-thread steel again.
The mounting method of the solid section template in above-mentioned superrelation on curve type hollow column board-like bridge pier pier top, preferably, in described step (2), pre-buried i iron is connected by weld seam with the vertical stiff skeleton of one side, 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 the solid section template in above-mentioned superrelation on curve type hollow column board-like bridge pier pier top, preferably, in described step (3), the steelframe braced structures comprises vertical i iron of being located at bracket top, is positioned at the gooseneck on this vertical i iron and is located at the vertical distribution girder steel on gooseneck, described steel truss is lifted into vertical distribution girder steel top of steelframe braced structures, and is connected with vertical distribution girder steel by securing member.
The mounting method of the solid section template in above-mentioned superrelation on curve type hollow column board-like bridge pier pier top, preferably, in described step (3), the size of described cover plate is greater than the steel truss upper dimension, and the cover plate both sides arrange pre-embedded bolt and i iron built-in fitting, when building the solid section template concrete in pier top, make cover plate and solid section connect into an integral body, by pre-embedded bolt, it is connected with steel truss.
Compared with prior art, the invention has the advantages that: method of the present invention taken into full account that solid section of superrelation on curve type bridge pier pier top construction space is narrow and small, the primary concreting volume of concrete large, to support system requirement of strength high, by set up successively job platform, bracket support system, steelframe braced structures, steel truss and mounting platform etc. at Dun Ding, realized well the transition to solid section by pier top hollow section of the board-like bridge pier of superrelation on curve type hollow column and similar configuration bridge pier, and made solid section of pier top form a stressed integral body with pier top upper tank beam.Mounting method of the present invention had both facilitated the construction handling, had also promoted intensity, and the ingenious support system that has used various forms of steel structure girders to form of the present invention simultaneously, compare with conventional concrete beam braced structures, not only alleviated deadweight, simultaneously for convenience detach again.Mounting method of the present invention has solved that solid section of shaped form bridge pier pier top construction space is narrow and small, the primary concreting volume of concrete large and well to construction technology difficult problems such as support intensity and stability requirement height, reached safe, economic, practical construction purpose, can be widely used in the similar superrelation on curve type bridge pier pier solid section construction in top.
The accompanying drawing explanation
Fig. 1 is that in the embodiment of the present invention, solid section of top of the board-like bridge pier pier of superrelation on curve type hollow column template is installed whole main TV structure schematic diagram.
Fig. 2 is that in the embodiment of the present invention, solid section of top of the board-like bridge pier pier of superrelation on curve type hollow column template is installed partial front elevation view.
Fig. 3 is that in the embodiment of the present invention, solid section of top of the board-like bridge pier pier of superrelation on curve type hollow column template is installed partial top view.
Fig. 4 is board-like bridge pier pier solid section of the top template of superrelation on curve type hollow column and pier top case beam connection diagram (main looking) 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, vertically distribute girder steel; 13, steel truss; 14, cover plate; 15, split bolt; 16, solid section template; 17, pier top case beam.
The specific embodiment
Below in conjunction with Figure of description, with concrete preferred embodiment, the invention will be further described, but protection domain not thereby limiting the invention.
Embodiment:
The mounting method of the solid section template in a kind of superrelation on curve type hollow column as shown in Figure 1 to 4 board-like bridge pier pier top comprises the following steps:
(1) the solid section lower square pier outer platform of the Dun Ding of bridge pier shown in Fig. 2 for 4 both sides I18 i iron (or other little shaped steel) set up in length and breadth, top is laid scaffold floor and is formed a job platform 5, and pier outer platform 4 bottoms adopt the 20a channel-section steels by steel work with the vertical stiff skeleton 2 of the vertical stiff skeleton 2(in bridge pier 1) outside be connected and form a stressed integral body; The steel work that connects vertical stiff skeleton 2 in pier outer platform 4 bottoms and pier stud 1 comprises channel-section steel 7 and fining twisted steel 6, the oblique layout of channel-section steel 7, and its apical support pier outer platform 4, bottom connects fining twisted steel 6 one ends; Fining twisted steel 6 bolts are secured on vertical stiff skeleton 2 through bridge pier 1, pier outer platform 4 are connected in aggregates with bridge pier, with the safety of the job platform 5 on assurance pier outer platform 4 tops.
(2) near the inboard affixed bracket support system respectively of vertical stiff skeleton pier outer platform 42.As shown in Figure 2, the bracket support system comprises that pre-buried i iron 8, anchor slab 9(anchor slab 9 adopt the steel plate of 14mm~16mm) and bracket 10, when the present embodiment Bridge Pier Construction during to the design attitude of pre-buried i iron 8 and anchor slab 9, first pre-buried i iron 8 was secured to bridge pier before closing the inboard concrete steel template of bridge pier on vertical stiff skeleton 2, by anchor slab 9, bracket 10 is connected with pre-buried i iron 8, bracket 10 downside anchor slabs 9 are connected with bridge pier 1 and vertical stiff skeleton 2 by fining twisted steel 6 bolts again.Pre-buried i iron 8 is connected by weld seam with the vertical stiff skeleton 2 of one side, same affixed by weld seam between the anchor slab 9 of pre-buried i iron 8 and its opposite side, adopt two fillet welds, and weld bead height is got 10mm; The anchor slab 9 opposite sides bracket 10 of burn-oning, bracket 10 anchors into the interior 10cm of pier stud 1.
(3) as shown in Figures 2 and 3, when pier stud 1 concrete of solid section below, pier top reaches design strength, remove the pier shaft internal mold, affixed steelframe braced structures above above-mentioned bracket support system, more prefabricated steel truss 13 is lifted on the steelframe braced structures it is connected with the steelframe braced structures.The steelframe braced structures of the present embodiment comprises vertical i iron of being located at bracket 10 tops, be positioned at the gooseneck 11 on this vertical i iron and a group of being located on gooseneck 11 vertically distributes girder steel 12, gooseneck 11 each side is connected with bracket 10 by two vertical i iron (I36a), for guaranteeing the resistance to overturning of steelframe braced structures, vertical distribution girder steel 12 is set in gooseneck 11 tops so that gooseneck 11 uniform stresseds, and gooseneck 11 is all selected I36a i iron (generally the material of the two needs identical) with vertically distributing girder steel 12.After the installation of steelframe braced structures, the Q345 steel truss 13 of precast assembly is lifted into to vertical distribution girder steel 12 tops of steelframe braced structures, gooseneck 11 and vertically distribute girder steel 12, vertically distribute between girder steel 12 and steel truss 13 and all be bolted.Again by 14 handlings of prefabricated concrete cover to steel truss 13 tops, and it is connected on steel truss 13, form the mounting platform of the solid section template in bridge pier pier top.Cover plate 14 precast concrete grades are 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, when building the solid section template concrete in pier top, make cover plate 14 connect into an integral body with solid section, by pre-embedded bolt, it is connected with steel truss 13, cover plate 14 is front that it is carried out to the concrete springback detection in lifting, guarantees that concrete strength reaches just being lifted more than 70% of design strength.Cover plate 14 is as the part on solid section of pier top, without dismounting.
(4) finally 16 of the solid section templates of bridge pier Dun Ding are stood on pier stud 1 and mounting platform, then by split bolt 15, it is connected with vertical stiff skeleton 2 with the horizontal stiff skeleton 3 in bridge pier, and forms an integral body.As shown in Figure 4, solid section template 16 left and right sides, top, arrange the I36a i iron in length and breadth, and 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 bolts by channel-section steel 7.
Figure 1 shows that the solid section template installation overall structure signal of the board-like bridge pier pier of the present embodiment superrelation on curve type hollow column top, when Bridge Pier Construction to pier top during solid section bottom pier stud 1, can solid section template 16 be stood on pier stud 1 according to above-mentioned mounting method, and the structural system by the present embodiment is set is so that solid section template 16 forms a stressed integral body with pier stud 1.As shown in Figure 4, when 17 construction of pier top case beam, can form by the mode of burying profile steel bracket underground the stress system of case beam 17 bottoms, pier top, the steel carriage is by affixed through fining twisted steel and the pier shaft of pier shaft.

Claims (6)

1. the board-like bridge pier pier of superrelation on curve type hollow column pushes up the mounting method of solid section template, comprises the following steps:
(1) set up a job platform in the solid section lower square pier outer platform both sides of described bridge pier Dun Ding, pier outer platform bottom by steel work be connected outside vertical stiff skeleton in bridge pier and form a stressed integral body;
(2) near the inboard affixed bracket support system respectively of the vertical stiff skeleton pier outer platform;
(3) affixed steelframe braced structures above described bracket support system, prefabricated steel truss is lifted on described steelframe braced structures it is connected with the steelframe braced structures again, again prefabricated concrete cover is connected to the steel truss top, forms the mounting platform of the solid section template in bridge pier pier top;
(4) finally the bridge pier pier is pushed up to solid section formwork support arrangement on described mounting platform, then by split bolt, it is connected with vertical stiff skeleton with the horizontal stiff skeleton in bridge pier, and forms an integral body.
2. the board-like bridge pier pier of superrelation on curve type hollow column according to claim 1 pushes up the mounting method of solid section template, it is characterized in that: in described step (1), the steel work that connects vertical stiff skeleton in pier outer platform bottom and bridge pier comprises channel-section steel and screw-thread steel, the oblique layout of channel-section steel, its apical support pier outer platform, bottom connecting thread steel one end; Screw-thread steel is secured on the vertical stiff skeleton in bridge pier through bridge pier.
3. the board-like bridge pier pier of superrelation on curve type hollow column according to claim 1 and 2 pushes up the mounting method of solid section template, it is characterized in that: in described step (2), the bracket support system comprises pre-buried i iron and bracket, first pre-buried i iron was secured to bridge pier before closing the inboard concrete steel template of bridge pier on vertical stiff skeleton, by anchor slab, bracket is connected with pre-buried i iron, bracket downside anchor slab is connected with vertical stiff skeleton by screw-thread steel again.
4. the board-like bridge pier pier of superrelation on curve type hollow column according to claim 3 pushes up the mounting method of solid section template, it is characterized in that: in described step (2), pre-buried i iron is connected by weld seam with the vertical stiff skeleton of one side, the anchor slab of pre-buried i iron and its opposite side is affixed by weld seam, and weld seam is two fillet welds.
5. the board-like bridge pier pier of superrelation on curve type hollow column according to claim 4 pushes up the mounting method of solid section template, it is characterized in that: in described step (3), the steelframe braced structures comprises vertical i iron of being located at bracket top, is positioned at the gooseneck on this vertical i iron and is located at the vertical distribution girder steel on gooseneck, described steel truss is lifted into vertical distribution girder steel top of steelframe braced structures, and is connected with vertical distribution girder steel by securing member.
6. the board-like bridge pier pier of superrelation on curve type hollow column according to claim 5 pushes up the mounting method of solid section template, it is characterized in that: in described step (3), the size of described cover plate is greater than the steel truss upper dimension, and the cover plate both sides arrange pre-embedded bolt and i iron built-in fitting, when building the solid section template concrete in pier top, make cover plate and solid section connect into an integral body, by pre-embedded bolt, it is connected with steel truss.
CN201310445084.5A 2013-09-26 2013-09-26 The mounting method of curve ultrahigh hollow column plate type pier top solid section template Expired - Fee Related CN103469735B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104195954A (en) * 2014-08-29 2014-12-10 上海建工七建集团有限公司 Overhead stand column construction platform without support and erecting method thereof
CN106012848A (en) * 2016-06-08 2016-10-12 江苏燕宁建设工程有限公司 Construction method for embedded bracket of cast-in-place box beam and bridge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290806A (en) * 1988-05-16 1989-11-22 Taisei Corp Construction method for bridge
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290806A (en) * 1988-05-16 1989-11-22 Taisei Corp Construction method for bridge
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104195954A (en) * 2014-08-29 2014-12-10 上海建工七建集团有限公司 Overhead stand column construction platform without support and erecting method thereof
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
CN106012848A (en) * 2016-06-08 2016-10-12 江苏燕宁建设工程有限公司 Construction method for embedded bracket of cast-in-place box beam and bridge
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

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