CN106988208A - A kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure - Google Patents

A kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure Download PDF

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Publication number
CN106988208A
CN106988208A CN201710224590.XA CN201710224590A CN106988208A CN 106988208 A CN106988208 A CN 106988208A CN 201710224590 A CN201710224590 A CN 201710224590A CN 106988208 A CN106988208 A CN 106988208A
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CN
China
Prior art keywords
arch
girder
pier
limb
box
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CN201710224590.XA
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彭元诚
宗昕
吴游宇
丁少凌
孙国富
董旭
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CCCC Second Highway Consultants Co Ltd
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CCCC Second Highway Consultants Co Ltd
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Priority to CN201710224590.XA priority Critical patent/CN106988208A/en
Publication of CN106988208A publication Critical patent/CN106988208A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/02Piers; Abutments ; Protecting same against drifting ice
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D12/00Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00

Abstract

The invention discloses a kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure, including at least one double limb main pier, double limb main piers include two limb posts being vertically arranged, the top of two limb posts is connected by pier top beam section, and binder and reinforcement binder between limb are also equipped between two limb posts;Hybrid structure of arch and beam framework is installed at the top of double limb main piers, hybrid structure of arch and beam framework includes lower edge arch box-girder and the box-girder that winds up, the box-girder that winds up is horizontally disposed with from pier top beam section to along bridge to be stretched out to both sides, lower edge arch box-girder is obliquely installed, from being stretched out between bridge pier limb at binder to along bridge to both sides, lower edge arch box-girder converges with the box-girder that winds up in double limb main pier both sides, wind up box-girder tension, lower edge arch box-girder is pressurized, lower edge arch box-girder and the box-girder that winds up reach stress balance, and lower edge arch box-girder centroidal axis arches up, the moment of flexure that partial offset deadweight is produced, as based on compression and the more uniform arch structure of stress distribution.

Description

A kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure
Technical field
It is used for civil engineering bridge technology field the present invention relates to one kind, is more particularly to a kind of pair of limb main pier arched girder group Box-like concrete continuous rigid structure bridge structure, realizes and a kind of possesses bigger span ability and the more preferably new bridge knot of economy Configuration formula.
Background technology
During bridge is highway, railway, urban road and road and water conservancy construction, in order to across various obstacles (such as river Stream or other structures) works.Divided by structure feature, bridge can be divided into beam, arch, rigid frame, hang and combined system. Concrete structure mainly uses beam, arch, rigid frame system.Concrete continuous rigid structure bridge is a kind of basic bridge type of Longspan Bridge, Be China or even the world in a kind of most widely used long span concrete bridge structure of field of traffic, what nearly 30 years China built up Concrete continuous rigid structure bridge total quantity about 2000, construction cost are more than 120,000,000,000.Concrete continuous rigid structure bridge possesses following Three features:(1) pier stud uses pier consolidation, and pier stud possesses certain flexibility to form swing limb support body system;(2) superstructure Still there is the loading characteristic of continuous beam, structure section is generally box beam, box beam height and across footpath ratio, and root is 1/16~1/ 18, span centre is 1/30~1/60;(3) superstructure uses cantilever construction, and pier consolidation saves large-scale bearing.
The Technological Economy of traditional prestressed concrete continuous rigid-framed bridge is applicable across footpath about in 60~200m, exceedes in across footpath During 200m, easily there are the defects such as middle span deflexion, beam body deformation, cracking, had a strong impact on the service life and durability of bridge, limited The span ability of this bridge type is made.At present, China to have hundreds of large-span concrete continuous rigid frame bridge to occur in that above-mentioned Structural defect and endurance issues.It is many both at home and abroad in order to improve the span ability of continuous rigid frame bridge, avoid later stage middle span deflexion Start with terms of material:The maximum Norway's stolma bridges of world's across footpath, main span footpath 301m, span centre 184m box beams are light using LC60 Matter concrete;Chongqing in China slabstone slope bridge, main span footpath 330m, span centre 103m sections use steel box-girder.Due to China's material, apply There is gap in work, administrative skill, traffic condition, the technological progress stagnation of continuous rigid frame bridge are limited by again using girder steel.Always Seen on body, the main deficiency of traditional prestressed concrete continuous rigid-framed bridge is:(1) span ability is small, and stock utilization is relatively low, When across footpath is more than 200m, the impatient acute deterioration of engineering economy;(2) structural bearing efficiency is low, is more than 200m bridges applied to across footpath When, easy cracking, downwarp problem, technical risk increase, security and the durability deterioration of structure;(3) superstructure weight Greatly, cause bridge pier, basic stress big, to earthquake-resistant ability.
So under this background, develop and a kind of completely possess bigger span ability and more preferably economy, newly continuous Rigid frame bridge structure type, has great practical value.
The content of the invention
The purpose of the present invention is to be to provide a kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure shape Formula, the load-carrying efficiency of bridge structure is improved in terms of structural system and inherent force-mechanism, is connected good with traditional construction method It is good, it is convenient to carry out.
To achieve these goals, the present invention uses following technical measures:
A kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure, including at least one double limb main pier, Described double limb main piers include two limb posts being vertically arranged, and the top of two described limb posts is connected by pier top beam section, Binder and reinforcement binder between limb are also equipped between two limb posts;Hybrid structure of arch and beam frame is installed at the top of described pair of limb main pier Frame, described hybrid structure of arch and beam framework includes lower edge arch box-girder and the box-girder that winds up, and the described box-girder that winds up is horizontally disposed with To being stretched out to both sides along bridge at from pier top beam section, described lower edge arch box-girder is obliquely installed, between bridge pier limb at binder to Stretched out along bridge to both sides, described lower edge arch box-girder converges with the box-girder that winds up in double limb main pier both sides, box-shaped of winding up Beam tension, lower edge arch box-girder are pressurized, and lower edge arch box-girder and the box-girder that winds up reach stress balance, and lower edge arch case Ellbeam centroidal axis arches up, the moment of flexure that partial offset deadweight is produced, as based on compression and stress distribution more uniform arch Structure.
Further, basis and cushion cap are installed in described double limb main pier bottoms, described basis instrument is in earth's surface In the following suitable ground layer of engineering geology, cushion cap is located at being connected integral at the top of basis on basis, and described limb post is set Put on cushion cap, be rigidly connected with cushion cap.
Further, limb column top is rigidly connected with pier top beam section;Between two limbs of the following certain altitude position of pier top If binder between limb;If arterial highway is set between the limb post between limb below binder strengthens binder, to improve the structural stability and bridge of limb post The rigidity of structure of pier.The limb post of the double limb main piers of connection, binder, the double limb main piers of reinforcement binder composition between pier top beam section, limb.
Further, described lower edge arch box-girder, between limb at binder to being stretched out to both sides along bridge, root with it is corresponding Double limb main pier limb posts just tie, the centroidal axis of lower edge arch box-girder is using the arch parabola or circular arc letter tilted upward Number curve.
Further, the described box-girder that winds up, from pier top beam section to being stretched out to both sides along bridge, root and corresponding pier Back timber Duan Gangjie, the upper limb for the box-girder that winds up is basically identical, more straight with road route longitudinal slope, bears vehicle, the work of crowd With.
Further, described lower edge arch box-girder converges with the box-girder that winds up, in double limb main piers along bridge to both sides Form hybrid structure of arch and beam framework;Wind up and the lower edge of hybrid structure of arch and beam framework be symmetrical with length and beam body section bridge pier center, Mutually balanced in weight.
Further, be connected between adjacent hybrid structure of arch and beam framework by solid web girder section, hybrid structure of arch and beam framework and abutment it Between be connected by end bay closure beam section with abutment pier beam section, formed a whole bridge section.
Further, described solid web girder section is And of Varying Depth box beam, by hybrid structure of arch and beam frame ends, symmetrically towards Shun Qiao Stretched out to cantilever until span centre, its lower edge is become using the parabolic function unified with lower edge arch box beam or the smooth-going of circular arc function Change, so that structure stress is smoothed out;Upper limb is basically identical, more straight with road route longitudinal slope, bears vehicle, the effect of crowd; Solid web girder section forms the single group hybrid structure of arch and beam formula cantilever design relative to bridge pier symmetrical balance together with hybrid structure of arch and beam framework.
Further, described abutment pier beam section is located at the top of abutment pier, is connected with abutment pier by bearing, with corresponding arched girder group Box-like cantilever design forms end bay superstructure by end bay closure beam section, connection;Multigroup hybrid structure of arch and beam formula cantilever design passes through Middle span closing beam section connects to form main span superstructure;Main span superstructure, end bay superstructure and corresponding bridge pier, cushion cap, Basis, constituting has that superstructure is continuous, bridge pier is consolidated with spanning superstructure, bridge pier cooperates with spanning superstructure stress, Double main pier hybrid structure of arch and beam formula continuously strong bridge structures of limb.
The technical characteristic of the present invention is also resided in:Determined according to structure stress size, code for structural design prevailing for the time being in force suitable Suitable each scantling of hybrid structure of arch and beam structural framing, steel flanged beam cantilever beam section sectional dimension and prestressing force size;Double limb main piers Cantilever design group number N>=2, form the hybrid structure of arch and beam formula continuously strong bridge structure of N-1 main span;Double limb main pier cantilever designs Group number N=1, then formed without main span, only end bay hybrid structure of arch and beam formula continuously strong bridge structure.
The system and mechanical characteristics of the structure of a kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge of the invention Including:
(1) binder and the reinforcement binder composition frame-type set on demand between the limb post of double limb main piers, pier top beam section, limb Structure, the energy for the out-of-balance force effect being likely to occur with larger bending rigidity and resistance cantilever beam section in work progress Power, improves the security of cantilever beam section construction.
(2) tower structure of double limb main piers, indulges bridge to displacement rigidity with less pier top, can comply with spanning The displacement that portion's structure is produced due to temperature change and concrete shrinkage and creep in bridge pier pier top, reduces pier displacement in bridge pier bottom The moment of flexure of generation, so as to reduce the stress of pier footing, reduces foundation engineering scale.
(3) the hybrid structure of arch and beam frame structure that double limb main pier cantilevers stretch out, for box-girder tension of winding up, lower edge arch box-shaped Beam is pressurized, homeostatic arch structure;Lower edge arch box-girder compression beam section axis suitably arched up, and partial offset deadweight is produced Moment of flexure, as based on compression and the more uniform arch structure of stress distribution, can more fully play the property of concrete material Energy.
(4) hybrid structure of arch and beam structural framing structure, the axial compressive force of inclined lower edge arch box-girder can be with balanced cantilever knot The shearing that structure transmission comes, with powerful shear resistance;Wind up the pulling force of box-girder and the arm of force of lower edge arch box-girder pressure Effect, can transmit the moment of flexure of coming, with powerful bending resistance with balanced cantilever structure.
(5) the larger region of cantilever force (close to the region of double limb main piers) uses hybrid structure of arch and beam structural framing structure, Shearing resistance, bending resistance are greatly enhanced, by increase hybrid structure of arch and beam structural framing root wind up with the distance between lower edge, close The length of reason adjustment hybrid structure of arch and beam structural framing and the upper arch of lower edge beam section, structural bearing efficiency are improved.
(6) the less region of cantilever force (region close to end) using conventional box girder with variable cross section, convenient construction and outstanding Arm end and the transition of closure section.
(7) double limb main piers are consolidated with spanning superstructure, it is not necessary to the counter-force of superstructure is transmitted by bearing, it is to avoid The use and its later maintenance of large-scale bearing, saves later stage running cost;Meanwhile, pier stud is consolidated with spanning superstructure, association Same stress, reduces the moment of flexure in superstructure span centre region, improves the economy of engineering.
The present invention has advantages below relative to prior art:
(1) on the premise of the traditional material (C50~C65 concrete) of holding, traditional cantilever construction technology, the company of raising Continuous 1.5~2 times of rigid frame bridge span ability, makes the across footpath of continuous rigid frame bridge reach 300~500 meters, significantly surmounts current company Continuous rigid frame bridge across footpath world record (Guangdong Humen Bridge Auxiliary Channel bridge, 270 meters of main span);
(2) arch, the mechanical characteristics advantage of girder construction are taken full advantage of, the load-carrying efficiency of girder structure is improved, in across footpath In the range of 200~300m, relatively conventional steel flanged beam box-beam structure, arched girder frame structure saves material, with more preferable engineering Economy;
(3) structure bending resistance shear resistance is improved, structure crack risk is reduced, with more preferable durability.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure multispan schematic diagram of double limbs;
Fig. 2 is the main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structural representation of double limbs of only end bay;
Fig. 3 is single group hybrid structure of arch and beam formula cantilever design schematic diagram;
Fig. 4 is that hybrid structure of arch and beam framework winds up and lower edge box beam sectional schematic diagram;
In figure:1- main spans, 2- end bays, 3- bases, 4- cushion caps, the double limb main piers of 5-, 6- abutment piers, 7- abutments, 8- pier top beams Section, 9- hybrid structure of arch and beam frameworks, 10- solid web girders section, 11- abutment pier beam sections, 12- Middle span closing beam sections, 13- end bay closure beam sections, 14- Binder between limb post, 15- limbs, 16- strengthens binder, and 17- lower edge arch box-girders, 18- winds up box-girder.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, small in the presence of (1) span ability in the prior art, stock utilization is relatively low, across When footpath is more than 200m, the impatient acute deterioration of engineering economy;(2) structural bearing efficiency is low, when being more than 200m bridges applied to across footpath, easily Cracking, downwarp problem, technical risk increase, security and the durability deterioration of structure;(3) superstructure weight is big, leads Cause bridge pier, basic stress big, the problems such as to earthquake-resistant ability, in order to solve technical problem as above, present applicant proposes A kind of hybrid structure of arch and beam formula concrete continuous girder bridge structure.
Below in conjunction with accompanying drawing, the structure to the present invention is further described.
The invention provides one kind relative to traditional continuous rigid frame bridge, structure stress mechanism and load-carrying efficiency are higher, possess Bigger span ability, superior economic performance, field operation amount and the less a kind of pair of limb main pier hybrid structure of arch and beam of difficulty of construction Formula concrete continuous rigid structure bridge structure, including at least one double limb main pier, described double limb main piers are set vertically including two The limb post put, the top of two described limb posts is connected by pier top beam section, be also equipped between two limb posts between limb binder and Strengthen binder;Hybrid structure of arch and beam framework is installed at the top of described pair of limb main pier, described hybrid structure of arch and beam framework includes lower edge Arch box-girder and the box-girder that winds up, the described box-girder that winds up is horizontally disposed with from pier top beam section to along bridge to be stretched out to both sides, Described lower edge arch box-girder is obliquely installed, from from being stretched out between bridge pier limb at binder to along bridge to both sides, described lower edge encircles Shape box-girder converges with the box-girder that winds up in double limb main pier both sides, and box-girder tension of winding up, lower edge arch box-girder are pressurized, under String arch box-girder and the box-girder that winds up reach stress balance, and lower edge arch box-girder axis arches up, partial offset deadweight The moment of flexure of generation, as based on compression and the more uniform arch structure of stress distribution.
Binder and the reinforcement binder composition frame-type knot set on demand between the limb posts of double limb main piers, pier top beam section, limb Structure, the ability for the out-of-balance force effect being likely to occur with larger bending rigidity and resistance cantilever beam section in work progress, Improve the security of cantilever beam section construction.
The tower structure of double limb main piers, indulges bridge to displacement rigidity with less pier top, can comply with spanning top The displacement that structure is produced due to temperature change and concrete shrinkage and creep in bridge pier pier top, reduces pier displacement and is produced in bridge pier bottom Raw moment of flexure, so as to reduce the stress of pier footing, reduces foundation engineering scale.
The hybrid structure of arch and beam frame structure that double limb main pier cantilevers stretch out, for box-girder tension of winding up, lower edge arch box-girder Compression, homeostatic arch structure;Lower edge compression beam section axis suitably arches up, the moment of flexure that partial offset deadweight is produced, and turns into Based on compression and the more uniform arch structure of stress distribution, the performance of concrete material can be more fully played.
Hybrid structure of arch and beam structural framing structure, the axial compressive force of inclined lower edge arch box-girder can be with balanced cantilever structure The shearing that transmission comes, with powerful shear resistance;The arm of force of box-girder pulling force and lower edge arch box-girder pressure of winding up is acted on, The moment of flexure of coming can be transmitted with balanced cantilever structure, with powerful bending resistance.
The larger region of cantilever force (close to the region of double limb main piers) uses hybrid structure of arch and beam structural framing structure, resists Cut, bending resistance is greatly enhanced, winded up with the distance between lower edge, rationally by increasing hybrid structure of arch and beam structural framing root The length of hybrid structure of arch and beam structural framing and the upper arch of lower edge beam section are adjusted, structural bearing efficiency is improved.
The less region of cantilever force (region close to end) is using conventional box girder with variable cross section, convenient construction and cantilever end With the transition of closure section.
Double limb main piers are consolidated with spanning superstructure, it is not necessary to the counter-force of superstructure is transmitted by bearing, it is to avoid The use and its later maintenance of large-scale bearing, save later stage running cost;Meanwhile, pier stud is consolidated with spanning superstructure, collaboration Stress, reduces the moment of flexure in superstructure span centre region, improves the economy of engineering.
Specifically, as shown in Figure 1 to 4, a kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure by Basis 3, cushion cap 4, double limb main piers 5, pier top beam section 8, hybrid structure of arch and beam framework 9, solid web girder section 10, abutment pier beam section 11, span centre are closed Imperial beam section 12, end bay closure beam section 13 are constituted.Described double limb main piers 5 binder 15,16 groups of binder of reinforcement between limb post 14, limb Into.Described hybrid structure of arch and beam framework 9 constitutes 18 by lower edge arch box-girder 17, the box-girder that winds up.
With reference to shown in Fig. 1, Fig. 2, basis 3 is arranged in the suitable ground layer of the following engineering geology of earth's surface, and cushion cap 4 is located at base It is connected integral with the top of basis 3 on plinth 3.
With reference to shown in Fig. 3, limb post 14 is arranged on the 4 of cushion cap, is rigidly connected with cushion cap 4;The top of limb post 14 passes through pier top Beam section 8, is rigidly connected with pier top beam section 8;Binder 15 between limb is set between two limbs of the following certain altitude position of pier top;It is between limb Between limb post 14 of the beam below 15, if can set arterial highway strengthens binder 16, to improve the structural stability of limb post 14 and the knot of bridge pier Structure rigidity.Two limb posts 14 of main pier are connected, the double limbs of binder 15, reinforcement binder 16 composition (as needed) between pier top beam section 8, limb Main pier 5.
With reference to shown in Fig. 3, Fig. 4, pier top beam section 8 is arranged on double tops of limb main pier 5, two limbs of the double limb main piers 5 of connection. Lower edge arch box-girder 17 to along bridge at binder 15 between bridge pier limb to both sides from stretching out, root and corresponding double limb posts of limb main pier 5 14 just tie, and the centroidal axis of lower edge arch box-girder 17 is using the arch parabola or circular arc function curve tilted upward.
With reference to shown in Fig. 3, Fig. 4, the box-girder 18 that winds up to along bridge to both sides from stretching out at pier coping portion pier top beam section 8, root Portion has just been tied with corresponding pier top beam section 8, and the upper limb for the box-girder 18 that winds up is basically identical, more straight with road route longitudinal slope, holds Acted on by vehicle, crowd.
With reference to shown in Fig. 3, Fig. 4, lower edge arch box-girder 17 converges with the box-girder 18 that winds up, in double limb main piers 5 along bridge Two hybrid structure of arch and beam frameworks 9 are formed to both sides, winding up for hybrid structure of arch and beam framework 9 is symmetrical with lower edge in length and beam body section Bridge pier center, mutually balance in weight.
With reference to shown in Fig. 3, Fig. 4, solid web girder section 10 is And of Varying Depth box beam, by the end of hybrid structure of arch and beam framework 9, symmetrically towards Stretched out along bridge to cantilever until span centre.Lower edge uses the parabolic function unified with the lower edge arch box beam 17 of hybrid structure of arch and beam framework 9 Or the smooth-going change of circular arc function, so that structure stress is smoothed out;Upper limb is basically identical, more straight with road route longitudinal slope, bears Vehicle, the effect of crowd;Solid web girder section 10 forms the single group arched girder relative to bridge pier symmetrical balance together with hybrid structure of arch and beam framework 9 Combination cantilever structure.
With reference to shown in Fig. 1~Fig. 4, abutment pier beam section 11 is located at the top of abutment pier 6, is connected with abutment pier 6 by bearing, with one side arch Beam combination cantilever structure forms the superstructure of end bay 2 by end bay closure beam section 13, connection;Multigroup hybrid structure of arch and beam formula cantilever knot Structure forms the superstructure of main span 1 by the connection of Middle span closing beam section 12;The superstructure of main span 1, the superstructure of end bay 2 and corresponding Bridge pier 5, cushion cap 4, basis 3, are constituted with spanning superstructure is continuous, bridge pier is consolidated with spanning superstructure, bridge pier cooperates with bridge Step up portion's structure stress, double main pier hybrid structure of arch and beam formula continuously strong bridge structures of limb.
With reference to shown in Fig. 1, Fig. 2, suitable arched girder is determined according to structure stress size, code for structural design prevailing for the time being in force Each scantling of combining structure framework, steel flanged beam cantilever beam section sectional dimension and prestressing force size;Double limb main pier cantilever designs Group number N>=2, form the hybrid structure of arch and beam formula continuously strong bridge structure of N-1 main span 1;Double limb main pier cantilever design group number N= 1, then formed without main span 1, only end bay 2 hybrid structure of arch and beam formula continuously strong bridge structure.
As can be seen from the above description, the application the above embodiments realize following technique effect:
(1) on the premise of the traditional material (C50~C65 concrete) of holding, traditional cantilever construction technology, the company of raising Continuous 1.5~2 times of rigid frame bridge span ability, makes the across footpath of continuous rigid frame bridge reach 300~500 meters, significantly surmounts current company Continuous rigid frame bridge across footpath world record (Guangdong Humen Bridge Auxiliary Channel bridge, 270 meters of main span);
(2) arch, the mechanical characteristics advantage of girder construction are taken full advantage of, the load-carrying efficiency of girder structure is improved, in across footpath In the range of 200~300m, relatively conventional steel flanged beam box-beam structure, arched girder frame structure saves material, with more preferable engineering Economy;
(3) structure bending resistance shear resistance is improved, structure crack risk is reduced, with more preferable durability.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.

Claims (10)

1. a kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure, it is characterised in that double including at least one Limb main pier, described double limb main piers include two limb posts being vertically arranged, and the top of two described limb posts passes through pier top Beam section is connected, and binder and reinforcement binder between limb are also equipped between two limb posts;It is provided with the top of described pair of limb main pier Hybrid structure of arch and beam framework, described hybrid structure of arch and beam framework includes lower edge arch box-girder and wind up box-girder, described box-shaped of winding up Beam is horizontally disposed with from pier top beam section to along bridge to be stretched out to both sides, and described lower edge arch box-girder is obliquely installed, and is between limb Liang Chu stretches out to along bridge to both sides, and described lower edge arch box-girder converges with the box-girder that winds up in double limb main pier both sides, on String box-girder tension, lower edge arch box-girder are pressurized, and lower edge arch box-girder and the box-girder that winds up reach stress balance, and lower edge Arch box-girder centroidal axis arches up, the moment of flexure that partial offset deadweight is produced, as based on compression and stress distribution is more equal Even arch structure.
2. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 1, it is characterised in that Described double limb main pier bottoms are provided with basis and cushion cap, described basis instrument in the following engineering geology of earth's surface suitably In basic unit, cushion cap is located at being connected integral at the top of basis on basis, and described limb post is arranged on cushion cap, with cushion cap rigidity Connection.
3. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 1, it is characterised in that institute Limb column top is stated to be rigidly connected with pier top beam section;Binder between limb is set between two limbs of the following certain altitude position of pier top;Between limb If arterial highway is set between the limb post below binder strengthens binder.
4. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 1, it is characterised in that institute The lower edge arch box-girder stated, from being stretched out between limb at binder to along bridge to both sides, root and corresponding double limb main pier limb posts are firm Knot, the centroidal axis of lower edge arch box-girder is using the arch parabola or circular arc function curve tilted upward.
5. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 1, it is characterised in that institute The box-girder that winds up stated, from pier top beam section to being stretched out to both sides along bridge, root has just been tied with corresponding pier top beam section, box-shaped of winding up The upper limb of beam is basically identical, more straight with road route longitudinal slope.
6. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 1, it is characterised in that institute The lower edge arch box-girder stated converges with the box-girder that winds up, and hybrid structure of arch and beam framework is formed to both sides along bridge in double limb main piers;Under String arch box-girder and the box-girder that winds up are symmetrical with bridge pier center in length and beam body section, mutually balanced in weight.
7. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 1, it is characterised in that phase Be connected between adjacent hybrid structure of arch and beam framework by solid web girder section, between hybrid structure of arch and beam framework and abutment by end bay closure beam section and Abutment pier beam section is connected, and forms a whole bridge section.
8. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 7, it is characterised in that institute The solid web girder section stated is And of Varying Depth box beam, is stretched out from hybrid structure of arch and beam frame ends symmetrically towards along bridge to cantilever up to span centre, Its lower edge is using the parabolic function unified with lower edge arch box beam or the smooth-going change of circular arc function, so that structure stress is smoothed out; Upper limb is basically identical, more straight with road route longitudinal slope;Solid web girder section is formed relative to bridge pier together with hybrid structure of arch and beam framework The single group hybrid structure of arch and beam formula cantilever design of symmetrical balance.
9. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 7, it is characterised in that institute The abutment pier beam section stated is located at the top of abutment pier, is connected with abutment pier by bearing, side is passed through with corresponding hybrid structure of arch and beam formula cantilever design Across closed beam section, connection forms end bay superstructure.
10. double limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structures as claimed in claim 7, it is characterised in that Multigroup hybrid structure of arch and beam formula cantilever design connects to form main span superstructure by Middle span closing beam section;Main span superstructure, end bay Superstructure and corresponding bridge pier, cushion cap, basis, constituting has continuous superstructure, bridge pier and spanning superstructure consolidation, bridge Pier cooperates with the main pier hybrid structure of arch and beam formula continuously strong bridge structure of double limbs of spanning superstructure stress.
CN201710224590.XA 2017-04-07 2017-04-07 A kind of pair of limb main pier hybrid structure of arch and beam formula concrete continuous rigid structure bridge structure Pending CN106988208A (en)

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