CN206941404U - A kind of steel truss arched bridge arch springing steel reinforced concrete composite joint construction - Google Patents
A kind of steel truss arched bridge arch springing steel reinforced concrete composite joint construction Download PDFInfo
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- CN206941404U CN206941404U CN201720500564.0U CN201720500564U CN206941404U CN 206941404 U CN206941404 U CN 206941404U CN 201720500564 U CN201720500564 U CN 201720500564U CN 206941404 U CN206941404 U CN 206941404U
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- bearing plate
- steel
- chord member
- prestressed
- arch rib
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 69
- 239000010959 steel Substances 0.000 title claims abstract description 69
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000011150 reinforced concrete Substances 0.000 title abstract 2
- 239000004567 concrete Substances 0.000 claims abstract description 32
- 238000004873 anchoring Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 7
- 239000003351 stiffener Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
A kind of steel truss arched bridge arch springing steel reinforced concrete composite joint construction is the utility model is related to, is made up of bearing plate lattice and chord member External prestressed system, it is characterised in that：Described bearing plate lattice includes bearing plate and perforated steel plate；Pre-stress system includes prestressed anchor case, prestressed strand, anchoring shoulder pole girder；Bearing plate is designed in the end of arch rib chord member, bearing plate bottom design connector, and connector is embedded in skewback concrete in advance, and the perforated steel plate of some vertical and horizontal is set at connector, vertical and horizontal reinforcing bar is set in the hole of perforated steel plate, so as to form bearing plate lattice；Prestressed anchor case is set outside arch rib chord member, prestressed anchor case side is connected with bearing plate, prestressed strand is arranged in arch rib chord member periphery, and the stretching end of prestressed strand is arranged on the end of prestressed anchor case and passes through bearing plate, and the other end is embedded in concrete saddle and is fixed on anchoring shoulder pole girder.The structural internal force of steel truss arched bridge arch rib chord member is effectively transferred to concrete saddle basis by the utility model, and force path is clear, clear and definite.
Description
Technical field
A kind of combined type connecting structure of steel truss arched bridge arch springing and concrete saddle is the utility model is related to, belongs to bridge work
Journey building field.
Background technology
There is at thrust steel truss arched bridge arch springing chord member section bear larger axle power and moment of flexure, arch springing steel and concrete saddle
Connecting structure needs the internal force for encircleing boom part being transferred to skewback basis.For large span steel truss arch bridge, existing arch springing steel
Connection with concrete saddle uses flush type to construct substantially, i.e., the main truss rod member of certain length is deep into skewback, passed through
WELDING STUDS is set to be combined with skewback concrete in rod member side wall, axle power the rubbing by rod member and skewback concrete of arch boom part
To concrete saddle, the moment of flexure for encircleing boom part passes to coagulation by the resistance to plucking of WELDING STUDS, shearing resistance for wiping, the Shear transfer of WELDING STUDS
Native skewback, the connected mode good reliability.Flush type construction is mutated in arch boom part and rigidity on skewback linkage interface, main truss bar
The part of part embedment skewback forms steel-mixed mixed structure, and force modes are unintelligible, and force path is indefinite, are embedded to segment limit
Skewback concrete stress field is complicated, and operation phase concrete is easy to crack, buried section construction size is larger can also increase skewback concrete pour difficulty.Root
According at steel truss arched bridge arch springing the characteristics of chord member compression member with small eccentricity, with reference to lacking for existing widely used flush type connecting structure
Point, propose that the new connected mode that a kind of force modes are clear, force path is clear and definite, construction technology is simple, structural reliability is high shows
Obtain very necessary.
The content of the invention
The purpose of this utility model in order to overcome prior art there are problems that shortcoming and, there is provided a kind of steel truss arched bridge arch springing
Steel -- mixed composite joint construction, the utility model use the technical scheme of bearing plate lattice+chord member External prestressed.Encircleed according to steel truss
At bridge arch pin the characteristics of chord member compression member with small eccentricity, avoid using traditional steel-mixed mixed structure, selection is using steel-mixed multiple
Connecting structure is closed, the connected mode force modes are clear, force path is clear and definite, construction technology is simple, to compression member with small eccentricity
For structural reliability it is high.
The technical solution of the utility model is：
A kind of steel truss arched bridge arch springing steel -- mixed composite joint construction, by bearing plate lattice and chord member External prestressed system group
Into, it is characterised in that：Described bearing plate lattice includes bearing plate and perforated steel plate；Pre-stress system include prestressed anchor case,
Prestressed strand, anchoring shoulder pole girder；Bearing plate design connects in the end of arch rib chord member, bearing plate bottom design connector
Part is embedded in skewback concrete in advance, and the perforated steel plate of some vertical and horizontal is set at connector, is set in the hole of perforated steel plate
Vertical and horizontal reinforcing bar, so as to form bearing plate lattice；Prestressed anchor case is set outside arch rib chord member, and prestressed anchor case side is with holding
Pressing plate is connected, and prestressed strand is arranged in arch rib chord member periphery, and the stretching end of prestressed strand is arranged on the end of prestressed anchor case
Portion simultaneously passes through bearing plate, and the other end is embedded in concrete saddle and is fixed on anchoring shoulder pole girder.
Stiffener mesh sheet is arranged in the hole of described perforated steel plate.
Bearing plate lattice mainly transmits the axle power of arch rib, and the arch rib chord member stress of steel truss arched bridge is based on axle power, by setting
Pressure-bearing steel plate is put, the perforated steel plate with vertical and horizontal reinforcing bar and stiffener mesh sheet is set under pressure-bearing steel plate, makes arch rib chord member
Axle power is directly diffused on concrete saddle in one big plane, ensure that the smooth-going transmission of arch rib chord member axle power.Arch rib string
The moment of flexure of bar is balanced by the prestressing force outside chord member, and in order to increase prestressed opplied moment, prestressed strand is preferentially arranged
On the outside of arch rib chord member, arch rib chord member top, bottom plate prestressing force balance chord member plane in vertical moment of flexure, it is pre- outside chord member web
The out-of-plane transverse bending moment of stress equilibrium chord member.To carry out effective tensioning to prestressing force, while consider arch rib chord member to skewback axle
Transition to rigidity, selection use the box construction of anchor.To ensure the reliable of prestress anchoraging, prestressed anchor fixed end uses shoulder pole
Beam, it is embedded in concrete saddle.To improve prestressed efficiency, prestressing force preferentially selects Large-diameter Steel pull bar.
By using steel-mixed composite joint construction, chord member axle power is transferred to concrete saddle, chord member by bearing plate lattice
Moment of flexure is balanced by chord member External prestressed, solve thes problems, such as that chord member internal force transmits, force modes are clear, and force path is bright
Really, the possibility of conceptual level hand computation is may be implemented in, avoids the process that analytic demonstration repeatedly is gone with finite element, has also evaded embedment
Rigidity of the formula construction on chord member and skewback interface is mutated, stress is complicated and is difficult to the inherent defect accurately analyzed.Steel-mixed compound
Connecting structure merges setting with arch springing chord member, and prestressed tensioning is carried out on the outside of chord member, without the narrow and small sky inside chord member
Between casting concrete, convenient construction, construction quality can obtain Reliable guarantee.Steel-mixed composite joint construction has given full play to steel
Structure and the respective material advantages of concrete structure, construction are simple to manufacture, and it is clear that internal force transmits, and its structure is novel, with conspicuous characteristics.
The structural internal force of steel truss arched bridge arch rib chord member is effectively transferred to concrete saddle basis, power transmission by the utility model
Approach is clear, clear and definite.
Brief description of the drawings
Fig. 1 is steel truss arched bridge arch springing steel -- mixed composite joint construction general arrangement.
Fig. 2 is arch springing steel of the present utility model-mixed composite joint structural map.
Fig. 3 is Fig. 2 1-1 views.
Embodiment
The utility model is further illustrated with reference to embodiment and accompanying drawing.
Fig. 1 is steel truss arched bridge arch springing steel -- mixed composite joint constructs general arrangement, and 1- skewbacks pour into a mould coagulation first in figure
Soil；2- skewback second pouring concrete；3- arch rib top booms；4- arch rib lower booms；5- skewbacks are cut with scissors；6- arch springings steel-mixed multiple
Close connection.Arch springing composite joint construct 6 points be arch rib wind up the 3, composite joint of arch rib lower edge 4 construction.Initially installed for main truss
Cantilever design can carry out corner adjustment during several sections, and arch springing is provided with the interim hinge 5 of construction, initially by arch springing hinge transmission during construction
Internal force changes supreme, lower boom composite joint construction 6 to skewback, during to design requirement and transmits arch purlin internal force to skewback, arch for this
Seat concrete sets second pouring, and sealing arch springing hinge simultaneously completes composite joint construction construction.
As shown in Figure 2 and Figure 3, the utility model is made up of bearing plate lattice and chord member External prestressed system, and its feature exists
In：Described bearing plate lattice includes bearing plate 9 and perforated steel plate 11；Pre-stress system includes prestressed anchor case 8, prestress steel
Beam 12, anchoring shoulder pole girder 13；Bearing plate 9 is designed in the end of arch rib chord member 7, the bottom design connector of bearing plate 9, and connector
It is embedded in advance in the concrete of skewback 10, the perforated steel plate 11 of some vertical and horizontal of setting at connector, in the hole of perforated steel plate 11
Vertical and horizontal reinforcing bar and stiffener mesh sheet are set, so as to form bearing plate lattice 14；Prestressed anchor is set outside arch rib chord member 7
Case 8, the side of prestressed anchor case 8 are connected with bearing plate 9, and prestressed strand 12 is arranged in the periphery of arch rib chord member 7, prestressed strand 12
Stretching end be arranged on the end of prestressed anchor case 8 and pass through bearing plate 9, the other end is embedded in concrete saddle 10 and fixed
On anchoring shoulder pole girder 13.
Bearing plate lattice mainly transmits the axle power of arch rib, and the arch rib chord member stress of steel truss arched bridge is based on axle power, by setting
Pressure-bearing steel plate is put, the perforated steel plate with vertical and horizontal reinforcing bar and stiffener mesh sheet is set under pressure-bearing steel plate, makes arch rib chord member
Axle power is directly diffused on concrete saddle in one big plane, ensure that the smooth-going transmission of arch rib chord member axle power.Arch rib string
The moment of flexure of bar is balanced by the prestressing force outside chord member, and in order to increase prestressed opplied moment, prestressed strand is preferentially arranged
On the outside of arch rib chord member, arch rib chord member top, bottom plate prestressing force balance chord member plane in vertical moment of flexure, it is pre- outside chord member web
The out-of-plane transverse bending moment of stress equilibrium chord member.To carry out effective tensioning to prestressing force, while consider arch rib chord member to skewback axle
Transition to rigidity, selection use the box construction of anchor.To ensure the reliable of prestress anchoraging, prestressed anchor fixed end uses shoulder pole
Beam, it is embedded in concrete saddle.To improve prestressed efficiency, prestressing force preferentially selects Large-diameter Steel pull bar.
Embodiment：
The embodiment is main span 519m (calculating across footpath) steel truss arch bridge, and structure of main bridge system uses holds in full thrust
Formula fixed arch, according to the loading characteristic of this bridge steel truss fixed arch, arch springing connecting structure is using steel-mixed composite joint construction 6.Steel
Truss arched bridge chord member 7 and the material of prestressed anchor case 8 use Q420qE, and the bearing plate 9 and perforated steel plate 11 of bearing plate lattice piece 14 are adopted
With Q345qD, prestressed strand 12 is not less than 835MPa reinforcing pull rod using yield strength.The upper and lower chord member of trussed bridge (3,4)
Using box section, box section Internal periphery size is 1600mm (case is wide) × 1800mm (case is high), and chord member top, bottom, web are each
If 2 longitudinal stiffeners；The thickness of slab 200mm of bearing plate 9, bearing plate skewback side sets the perforated steel plate 11 of vertical and horizontal, in hole
Vertical and horizontal reinforcing bar is set, and to help bearing plate and concrete saddle to form an entirety, and the axle power for spreading chord member is extremely encircleed
In seat basis；Prestressing force presses the space of chord member medial and lateral, is anchored in respectively on prestressed anchor case 8 and bearing plate 9, prestressed anchor
The structure of case 8 determines physical dimension and thickness of slab according to prestressed stretch-draw tonnage, and non-drying anticorrosion material is irrigated in prestressed anchor case 8
Prestressing force is protected, the anchored end of prestressed strand 12 sets on shoulder pole girder 13, helps pretension being transferred in concrete saddle
Portion；Prestressing force can use prestressing force steel hinge line, steel wire and reinforcing pull rod, and the present embodiment uses prestress steel pull bar, reinforcing pull rod diameter
For 115mm, 130mm, prestress steel pull bar has the characteristics of area of section is big, tension tonnage is big, anchorage is small.Set prestressed
Main purpose is the moment of flexure of balanced arch chord bar, is arranged on the inside and outside prestressing force of top, bottom plate and balances the vertical curved of chord member
Square, it is arranged on the transverse bending moment that the inside and outside prestressing force of chord member web balances chord member.
The axle power of arch rib chord member is transferred in concrete saddle 10 by bearing plate lattice piece 14.12 are set outside arch rib chord member
Individual prestressed anchor case 8,4 prestress steel pull bars for being directly anchored in the top surface of bearing plate 9 are set in addition, pass through prestress steel pull bar
Prestretching dynamic balance chord member face in, face Moments.
Bearing plate lattice and prestressed anchor case in the present embodiment arch springing steel-mixed composite joint construction is together with arch rib chord member
Manufactured in manufacture of steel structure processing factory；Installation is lifted by crane after transporting scene to；Prestressed flat spreader beam, reinforcing pull rod and embedded steel tube, hold
Pressing plate lattice piece etc. is embedded in skewback concrete in advance；Reinforcing bar and stiffener net treat arch rib in bearing plate lattice perforated steel plate
In-site installation after head section liftings are in place.
Claims (2)
- A kind of 1. steel truss arched bridge arch springing steel -- mixed composite joint construction, it is made up of bearing plate lattice and chord member External prestressed system, It is characterized in that：Described bearing plate lattice includes bearing plate and perforated steel plate；Pre-stress system includes prestressed anchor case, in advance should Power steel beam, anchoring shoulder pole girder；Bearing plate is designed in the end of arch rib chord member, bearing plate bottom design connector, and connector is pre- It is embedded in skewback concrete, the perforated steel plate of some vertical and horizontal is set at connector, longitudinal direction is set in the hole of perforated steel plate And transverse steel, so as to form bearing plate lattice；Prestressed anchor case, prestressed anchor case side and bearing plate are set outside arch rib chord member It is connected, prestressed strand is arranged in arch rib chord member periphery, and the stretching end of prestressed strand is arranged on the end of prestressed anchor case simultaneously Through bearing plate, the other end is embedded in concrete saddle and is fixed on anchoring shoulder pole girder.
- A kind of 2. steel truss arched bridge arch springing steel according to claim 1 -- mixed composite joint construction, it is characterised in that：Described Stiffener mesh sheet is arranged in the hole of perforated steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720500564.0U CN206941404U (en) | 2017-05-05 | 2017-05-05 | A kind of steel truss arched bridge arch springing steel reinforced concrete composite joint construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720500564.0U CN206941404U (en) | 2017-05-05 | 2017-05-05 | A kind of steel truss arched bridge arch springing steel reinforced concrete composite joint construction |
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|---|---|
| CN206941404U true CN206941404U (en) | 2018-01-30 |
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| CN201720500564.0U Expired - Fee Related CN206941404U (en) | 2017-05-05 | 2017-05-05 | A kind of steel truss arched bridge arch springing steel reinforced concrete composite joint construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024224A (en) * | 2018-08-28 | 2018-12-18 | 中铁二局工程有限公司 | A kind of steel lagging jack and concrete pedestal attachment device |
| CN109914260A (en) * | 2019-04-09 | 2019-06-21 | 中铁十八局集团第二工程有限公司 | Four, double ribs encircle vaulted beam method without steel truss is twisted |
| CN111305046A (en) * | 2020-04-01 | 2020-06-19 | 中铁二院工程集团有限责任公司 | Connecting structure of hingeless steel truss arch and arch support and construction method thereof |
| CN113897880A (en) * | 2021-11-22 | 2022-01-07 | 贵州桥梁建设集团有限责任公司 | Method for cast-in-place construction of short-span suspended assembly arch center of large-span concrete arch bridge |
| CN114250690A (en) * | 2022-01-25 | 2022-03-29 | 山东省交通规划设计院集团有限公司 | Steel-concrete combined arch support suitable for concrete-filled steel tube arch bridge |
-
2017
- 2017-05-05 CN CN201720500564.0U patent/CN206941404U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024224A (en) * | 2018-08-28 | 2018-12-18 | 中铁二局工程有限公司 | A kind of steel lagging jack and concrete pedestal attachment device |
| CN109024224B (en) * | 2018-08-28 | 2024-02-06 | 中铁二局工程有限公司 | Connecting device for steel arch rib and concrete base |
| CN109914260A (en) * | 2019-04-09 | 2019-06-21 | 中铁十八局集团第二工程有限公司 | Four, double ribs encircle vaulted beam method without steel truss is twisted |
| CN111305046A (en) * | 2020-04-01 | 2020-06-19 | 中铁二院工程集团有限责任公司 | Connecting structure of hingeless steel truss arch and arch support and construction method thereof |
| CN113897880A (en) * | 2021-11-22 | 2022-01-07 | 贵州桥梁建设集团有限责任公司 | Method for cast-in-place construction of short-span suspended assembly arch center of large-span concrete arch bridge |
| CN113897880B (en) * | 2021-11-22 | 2023-09-12 | 贵州桥梁建设集团有限责任公司 | Method for cast-in-situ construction of short-span suspension spliced arch bridge of large-span concrete arch bridge |
| CN114250690A (en) * | 2022-01-25 | 2022-03-29 | 山东省交通规划设计院集团有限公司 | Steel-concrete combined arch support suitable for concrete-filled steel tube arch bridge |
| CN114250690B (en) * | 2022-01-25 | 2023-11-21 | 山东省交通规划设计院集团有限公司 | Steel-concrete combined arch base suitable for steel pipe concrete arch bridge |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 |