CN103628416A - Stiffening girder counter-straining near-pier bracket of suspension bridge - Google Patents

Stiffening girder counter-straining near-pier bracket of suspension bridge Download PDF

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Publication number
CN103628416A
CN103628416A CN201310697425.8A CN201310697425A CN103628416A CN 103628416 A CN103628416 A CN 103628416A CN 201310697425 A CN201310697425 A CN 201310697425A CN 103628416 A CN103628416 A CN 103628416A
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China
Prior art keywords
suspension bridge
lower transverse
transverse beam
stiffening girder
cross beam
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CN201310697425.8A
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CN103628416B (en
Inventor
涂满明
赵小静
田继开
王东辉
宋小三
郑大超
刘润泽
何加江
高双剑
李陆平
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China Railway Major Bridge Engineering Group Co Ltd MBEC
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China Railway Major Bridge Engineering Co Ltd
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Publication of CN103628416A publication Critical patent/CN103628416A/en
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Abstract

The invention discloses a stiffening girder counter-straining near-pier bracket of a suspension bridge. The stiffening girder counter-straining near-pier bracket comprises a horizontal cross beam which is arranged on the top surface of a lower cross beam of the suspension bridge, and two triangular truss structures which are symmetrically arranged at the two sides of the lower cross beam of the suspension bridge on the left and the right, wherein each triangular truss structure comprises a longitudinal beam which is close to the lower cross beam and arranged in parallel with the side surface of the lower cross beam, and a plurality of supporting diagonal rods distributed at the outer side from inside to outside; the two ends of each supporting diagonal rod are arranged on the horizontal cross beam and a longitudinal beam; the longitudinal beams are fixed on the side end face of the lower cross beam through bearing beams in the positions of the points of intersection in which the longitudinal beams are in connection with the supporting diagonal rods; the lower ends of the left and right two longitudinal beams are in penetrating connection with each other through a precision-rolled reinforced bar, and the two longitudinal beams are arranged under the lower cross beam and the two ends of the two longitudinal beams are tensioned through distribution beams, respectively. According to the stiffening girder counter-straining near-pier bracket, the investment of steel materials is saved, the influence on the construction of a main body structure of the suspension bridge is slight and the construction quality is effectively guaranteed; the stiffening girder counter-straining near-pier bracket of the suspension bridge is high in practicability.

Description

Stiffening girder of suspension bridge is to pulling type pier side bracket
Technical field
The present invention relates to field of bridge construction, be specifically related to stiffening girder of suspension bridge to pulling type pier side bracket.
Background technology
Along with the paces of domestic high-grade highway and railway construction are constantly accelerated, also more and more extensive for the mobile formwork of bridge construction and the application of Bridge Erector.At present, in stiffening girder of suspension bridge work progress, because the stiff girder on suspension bridge king-tower lower transverse beam top does not arrange hoist cable, therefore can only select the mode of the assembled stiff girder in original place or prefabrication and lifting stiff girder to construct, but these two kinds of modes all need to arrange pier-side bracket.
Traditional pier-side bracket adopts console mode mostly, and because lower transverse beam often has the distance of tens meters apart from bearing platform, console mode pier-side bracket is set under these circumstances, just need to drop into a large amount of steel frame constructions, the built-in fitting that lower transverse beam side needs simultaneously also can affect to king-tower outward appearance.Therefore, traditional pier-side bracket not only involves great expense, large to agent structure appearance effects, and stiff girder construction quality can not be ensured preferably.
Summary of the invention
Technical problem to be solved by this invention is to solve traditional problem that stiffening girder of suspension bridge pier-side bracket construction quality is low and cost is high.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is to provide a kind of stiffening girder of suspension bridge to pulling type pier side bracket, comprise the horizontal gird and two triangular truss structures that are symmetrical set in suspension bridge lower transverse beam both sides that are arranged on suspension bridge lower transverse beam end face, wherein, described in each, triangular truss structure comprises longeron and several knightheads that side distributes from inside to outside that is close to lower transverse beam and arranges with lower transverse beam parallel sided, the two ends of described knighthead are separately positioned on horizontal gird and longeron, described longeron is fixed on the side end face of lower transverse beam at the position of intersecting point being connected with described knighthead by bearing beam, connection is run through by finish rolling deformed bar in longeron lower end, two of described left and right, and be arranged in the below of lower transverse beam, and stretch-draw is carried out by distribution beam respectively in two ends.
In such scheme, lower transverse beam top is symmetrically set with built-in fitting, and the steel plate that described longeron arranges by below is connected with described built-in fitting.
In such scheme, described steel plate adopts steel plate.
In such scheme, between described bearing beam and lower transverse beam, be provided with hard rubber pad.
In such scheme, described triangular truss structure adopts H structural section.
The present invention, utilizes elongated horizontal gird that the triangular truss structure of king-tower both sides is connected into an integral body, and the pier-side bracket fulcrum of formation is symmetricly set on lower transverse beam top, places the stiff girder that will install on fulcrum.
The present invention, adopts the load-bearing of earth-free triangle pier-side bracket, can produce certain horizontal force.And in order to guarantee that pressure is passed to lower transverse beam uniformly, the Nodes being connected with knighthead at pier-side bracket longeron is provided with bearing beam effect, and formation level retrains to pressurized, adds the hard rubber pad being provided with simultaneously, to guarantee that a pressurized connects, and this horizontal force is evenly passed to lower transverse beam.Between two longerons in left and right, adopt the mode of the symmetrical perforate in the edge of a wing to run through finish rolling deformed bar, utilize distribution beam to carry out the stretch-draw to finish rolling deformed bar, effectively improved lateral stability and the resistance to overturning of whole pier-side bracket.
The present invention, adopts stiffening girder of suspension bridge to pulling type pier side bracket, and the pier-side bracket of grounding type needn't be set again, needn't built-in fitting be set in the side of king-tower lower transverse beam, save the input of steel, little on suspension bridge main structure construction impact, effectively guarantee construction quality, and practical.This stiffening girder of suspension bridge is also applicable to the bracket design of other resemble construction to pulling type pier side bracket in addition.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is A portion enlarged drawing in Fig. 1 of the present invention;
Fig. 3 is B portion enlarged drawing in Fig. 1 of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, the invention provides a kind of stiffening girder of suspension bridge to pulling type pier side bracket, comprise the horizontal gird 2 and two triangular truss structures that are symmetrical set in suspension bridge lower transverse beam 1 both sides that are arranged on suspension bridge lower transverse beam 1 end face.Triangular truss structure adopts H structural section.
Shown in Fig. 2, wherein, each triangular truss structure comprises longeron 4 and several knightheads 5 that side distributes from inside to outside that is close to lower transverse beam 1 and arranges with lower transverse beam parallel sided, in the present embodiment, each triangular truss structure contains two knightheads, the two ends of knighthead 5 are separately positioned on horizontal gird 2 and longeron 4, longeron 4 is fixed on by bearing beam 6 on the side end face of lower transverse beam 1 at the position of intersecting point being connected with knighthead 5, between bearing beam 6 and lower transverse beam 1, is provided with hard rubber pad 7; Connection is run through by finish rolling deformed bar 8 in two longeron 4 lower ends, left and right, and is arranged in the below of lower transverse beam 1, and stretch-draw is carried out by distribution beam 9 respectively in two ends.
Shown in Fig. 3, lower transverse beam 1 top is symmetrically set with built-in fitting 10, and the steel plate 11 that longeron 4 arranges by below is connected with built-in fitting 10, and steel plate adopts steel plate.Being connected between this built-in fitting and longeron can provide fixed constraint, owing to only there being the constraint of the power of horizontal direction between longeron and lower transverse beam side, so the side of lower transverse beam does not need to arrange built-in fitting.
The present invention, utilizes elongated horizontal gird that the triangular truss structure of king-tower both sides is connected into an integral body, forms horseback riding type carrier structure, and the pier-side bracket fulcrum of formation is symmetricly set on lower transverse beam top, places the stiff girder 3 that will install on fulcrum.
The present invention, adopts the load-bearing of earth-free triangle pier-side bracket, can produce certain horizontal force.And in order to guarantee that pressure is passed to lower transverse beam uniformly, the Nodes being connected with knighthead at pier-side bracket longeron is provided with bearing beam effect, and formation level retrains to pressurized, adds the hard rubber pad being provided with simultaneously, to guarantee that a pressurized connects, and this horizontal force is evenly passed to lower transverse beam.Between two longerons in left and right, adopt the mode of the symmetrical perforate in the edge of a wing to run through finish rolling deformed bar, utilize distribution beam to carry out the stretch-draw to finish rolling deformed bar, effectively improved lateral stability and the resistance to overturning of whole pier-side bracket.
After pier shaft bracket is removed, need to originally be provided with concrete surface, built-in fitting position to lower transverse beam and carry out Recovery processing.Meanwhile, larger shearing size that can the part between longeron and built-in fitting need to be born according to horizontal gird, carries out reinforcement to the H shape steel web 12 in horizontal gird.
The present invention, adopt stiffening girder of suspension bridge to pulling type pier side bracket, the pier-side bracket of grounding type needn't be set again, needn't built-in fitting be set in the side of king-tower lower transverse beam, horseback riding type carrier structure modern design is light and handy, take up room little, saved the input of steel, little on suspension bridge main structure construction impact, be not subject to topographic and geologic condition restriction, effectively guarantee construction quality, and practical.This stiffening girder of suspension bridge is also applicable to the bracket design of other resemble construction to pulling type pier side bracket in addition.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.

Claims (5)

1. stiffening girder of suspension bridge is to pulling type pier side bracket, it is characterized in that, comprise the horizontal gird and two triangular truss structures that are symmetrical set in suspension bridge lower transverse beam both sides that are arranged on suspension bridge lower transverse beam end face, wherein, described in each, triangular truss structure comprises longeron and several knightheads that side distributes from inside to outside that is close to lower transverse beam and arranges with lower transverse beam parallel sided, the two ends of described knighthead are separately positioned on horizontal gird and longeron, described longeron is fixed on the side end face of lower transverse beam at the position of intersecting point being connected with described knighthead by bearing beam, connection is run through by finish rolling deformed bar in longeron lower end, two of described left and right, and be arranged in the below of lower transverse beam, and stretch-draw is carried out by distribution beam respectively in two ends.
2. stiffening girder of suspension bridge as claimed in claim 1, to pulling type pier side bracket, is characterized in that, lower transverse beam top is symmetrically set with built-in fitting, and the steel plate that described longeron arranges by below is connected with described built-in fitting.
3. stiffening girder of suspension bridge as claimed in claim 2, to pulling type pier side bracket, is characterized in that, described steel plate adopts steel plate.
4. stiffening girder of suspension bridge as claimed in claim 1, to pulling type pier side bracket, is characterized in that, is provided with hard rubber pad between described bearing beam and lower transverse beam.
5. stiffening girder of suspension bridge as claimed in claim 1, to pulling type pier side bracket, is characterized in that, described triangular truss structure adopts H structural section.
CN201310697425.8A 2013-12-18 2013-12-18 Stiffening girder of suspension bridge is to pulling type pier side bracket Active CN103628416B (en)

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CN103628416B CN103628416B (en) 2016-06-29

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105178197A (en) * 2015-09-30 2015-12-23 杭州萧宏建设集团有限公司 Support frame for bearing formworks of initial blocks of bridge box girder and initial block construction method
CN105648911A (en) * 2014-11-25 2016-06-08 中铁二十局集团有限公司 Concrete attached type prestress truss support for cast-in-place beam, cover beam and straining beam in bridge construction
CN106284094A (en) * 2016-09-18 2017-01-04 中铁二十局集团有限公司 A kind of bridge construction concrete adhesion type prestressed girder support
CN110409319A (en) * 2019-08-16 2019-11-05 中铁十四局集团第三工程有限公司 A kind of cast-in-place floorings bracket of large span steel reinforced concrete combination beam and construction method
CN110409318A (en) * 2019-08-16 2019-11-05 中铁十四局集团第三工程有限公司 A kind of large span freely-supported steel reinforced concrete bondbeam assembling method
CN110735478A (en) * 2019-10-28 2020-01-31 盐城工学院 fabricated concrete truss building structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073115A (en) * 1972-09-28 1978-02-14 Dyckerhoff & Widmann Aktiengesellschaft Process for the production of a bridge girder sectional cantilever construction
CN101440604A (en) * 2008-12-29 2009-05-27 中铁大桥局股份有限公司 Cable opposite pulling type pier-side bracket
CN202144582U (en) * 2011-07-08 2012-02-15 四川路航建设工程有限责任公司 Assembly type box-shaped bracket system for single column pier of bridge
CN202369922U (en) * 2011-11-01 2012-08-08 中铁四局集团第一工程有限公司 Pull type bracket truss
CN203188130U (en) * 2013-04-28 2013-09-11 新疆北新路桥集团股份有限公司 Prestress counter-tension pre-pressing bracket type scaffold supporting device
CN203729206U (en) * 2013-12-18 2014-07-23 中铁大桥局股份有限公司 Suspension bridge stiffening beam oppositely-pulling type pier-side bracket

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073115A (en) * 1972-09-28 1978-02-14 Dyckerhoff & Widmann Aktiengesellschaft Process for the production of a bridge girder sectional cantilever construction
CN101440604A (en) * 2008-12-29 2009-05-27 中铁大桥局股份有限公司 Cable opposite pulling type pier-side bracket
CN202144582U (en) * 2011-07-08 2012-02-15 四川路航建设工程有限责任公司 Assembly type box-shaped bracket system for single column pier of bridge
CN202369922U (en) * 2011-11-01 2012-08-08 中铁四局集团第一工程有限公司 Pull type bracket truss
CN203188130U (en) * 2013-04-28 2013-09-11 新疆北新路桥集团股份有限公司 Prestress counter-tension pre-pressing bracket type scaffold supporting device
CN203729206U (en) * 2013-12-18 2014-07-23 中铁大桥局股份有限公司 Suspension bridge stiffening beam oppositely-pulling type pier-side bracket

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105648911A (en) * 2014-11-25 2016-06-08 中铁二十局集团有限公司 Concrete attached type prestress truss support for cast-in-place beam, cover beam and straining beam in bridge construction
CN105648911B (en) * 2014-11-25 2017-11-24 中铁二十一局集团有限公司 Bridge construction Cast-in-situ Beam, bent cap, binder concrete adhesion type prestressed girder support
CN105178197A (en) * 2015-09-30 2015-12-23 杭州萧宏建设集团有限公司 Support frame for bearing formworks of initial blocks of bridge box girder and initial block construction method
CN106284094A (en) * 2016-09-18 2017-01-04 中铁二十局集团有限公司 A kind of bridge construction concrete adhesion type prestressed girder support
CN110409319A (en) * 2019-08-16 2019-11-05 中铁十四局集团第三工程有限公司 A kind of cast-in-place floorings bracket of large span steel reinforced concrete combination beam and construction method
CN110409318A (en) * 2019-08-16 2019-11-05 中铁十四局集团第三工程有限公司 A kind of large span freely-supported steel reinforced concrete bondbeam assembling method
CN110409319B (en) * 2019-08-16 2021-02-23 中铁十四局集团第三工程有限公司 Bracket for large-span steel-concrete composite beam cast-in-place bridge deck and construction method
CN110735478A (en) * 2019-10-28 2020-01-31 盐城工学院 fabricated concrete truss building structure
CN110735478B (en) * 2019-10-28 2021-04-30 盐城工学院 Assembled concrete truss building structure

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Effective date of registration: 20160425

Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No.

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Inventor after: Tu Manming

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