CN103911948B - Be applied to horizontal purlin formula steel work and the construction method thereof of wide concrete rib plate-girder - Google Patents
Be applied to horizontal purlin formula steel work and the construction method thereof of wide concrete rib plate-girder Download PDFInfo
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Abstract
The present invention relates to a kind of horizontal purlin formula steel work and the construction method thereof that are applied to wide concrete rib plate-girder, upper chord, lower chord termination connect end web member, in indirect midfield bar, end web member connects concrete beam rib; Upper chord by WELDING STUDS, bridge deck concrete is suitable, direction across bridge is cast-in-place sews up precast concrete bridge deck, coagulation balk is coerced; Resistance to plucking key is established with beam rib junction at the coagulation balk side of body.Construction method is, upper and lower chord member and end web member assembly welding become framework, welding node plate, welds or web member in bolt, welding WELDING STUDS and resistance to plucking key; Be transported to on-the-spot preparation to install; Mounting rail rib bed die, lifts and adjusts in place; Mounting rail rib side form and stalk side of body bed die, assembling reinforcement, prestressed pipeline; Cast beam rib and stalk side of body concrete, precast concrete bridge deck are in place, and cast bridge deck concrete is suitable, the cast-in-place seam of direction across bridge.Adopt the present invention under Vehicle Load, upper chord and the common pressurized of precast concrete bridge deck, lower chord bear pull transfer in beam rib.
Description
Technical field
The present invention relates to a kind of horizontal purlin formula steel work and the construction method thereof that are applied to wide concrete rib plate-girder.
Background technology
Concrete rib plank beams, because its structure is succinct, stressed clearly, construction is simple, has application, is especially most widely used in span 500m and following cable stayed bridge in cable stayed bridge, arch bridge and suspension bridge.But along with economic development, the traffic volume increase, bridge floor number of track-lines is by 4 common in the past tracks, be increased to 6,8 tracks even more, the wide also corresponding increase of bridge, in the past conventional prestressed concrete crossbeam deadweight proportion increases, the wide beam effect that prestressing force causes increases, and economy, the technical advantage of concrete rib plank beams are no longer obvious.
Concrete rib plate-girder is typical beam stress system in length and breadth, force path: vehicular load is through concrete slab, and crossbeam, both sides concrete beam rib reaches drag-line or hoist cable.Its middle cross beam is crucial Force transmission parts, and main by shearing and moment of flexure, its physical dimension controls by bridge deck width.
Current crossbeam generally adopts prestressed reinforced concrete construction, along with the increase of the traffic volume and number of track-lines, the physical dimension of crossbeam and to join Suo Zengjia obvious, continues to adopt prestressed concrete crossbeam to there is the following deficiency:
(1) in stressed, the moment of flexure of crossbeam increases in square progression along with length, and causing its deadweight and joining rope amount increases, and wide beam effect is obvious.
(2) in economy, drag-line, king-tower (or arch rib), basis and main girder construction temporary structure increase along with crossbeam deadweight and increase, and economic advantages reduce.
(3) in durability, due to wide beam effect, there is the risk of cracking, need to take extra measure to ensure durability.
(4) in construction, crossbeam length increases, deadweight increases, the easily deformable downwarp of construction hanging basket crossbeam.
For solving wide bridge floor prestressed cross beams above shortcomings, also some good tries are had at present, such as establish the edge of a wing to be placed in outside crossbeam scope in nonmotorized vehicle lane and sidewalk etc., but flange width is limited, this measure is failed from solving in fact wide bridge floor prestressed cross beams Problems existing.
Summary of the invention
The object of the invention is for above-mentioned present situation, aiming to provide one can make upper chord and the common pressurized of precast concrete bridge deck, lower chord bear pulling force separately, and can be transmitted to the horizontal purlin formula steel work being applied to wide concrete rib plate-girder and the construction method thereof of beam rib.
The implementation of the object of the invention is, be applied to the horizontal purlin formula steel work of wide concrete rib plate-girder, upper chord, lower chord termination connect end web member, and centre connects middle web member by gusset plate, and end web member is by shearing nail joint concrete beam rib; Upper chord by WELDING STUDS, bridge deck concrete along bridge to cast-in-place seam, bridge deck direction across bridge is cast-in-place sews up precast concrete bridge deck, coagulation balk is coerced; Resistance to plucking key is established with concrete beam rib junction at the coagulation balk side of body.
Be applied to the construction method of the horizontal purlin formula steel work of wide concrete rib plate-girder, concrete steps are as follows:
1) upper and lower chord member and end web member assembly welding become framework, welding node plate, weld or web member in bolt, welding WELDING STUDS and resistance to plucking key;
2) framework of welding node plate, middle web member, WELDING STUDS and resistance to plucking key is transported to on-the-spot preparation to install;
3) mounting rail rib bed die on Hanging Basket or support, the framework of welding node plate, middle web member, WELDING STUDS and resistance to plucking key lifts and adjusts in place;
4) mounting rail rib side form and stalk side of body bed die, assembling reinforcement, prestressed pipeline;
5) pour into a mould beam rib and stalk the side of body concrete and maintenance to the length of time;
6) lay transverse sealing rubber strip at the masthead that winds up of welding node plate, middle web member, WELDING STUDS and resistance to plucking key, and hoisting prefabricated concrete slab is in place;
7) longitudinally cast-in-place seam construction suspension bracket is installed, lays longitudinal sealing rubber strip on suspension bracket top;
8) pour into a mould bridge deck concrete along bridge to cast-in-place seam, the cast-in-place seam of bridge deck direction across bridge, maintenance, to the length of time, removes interim suspension bracket.
Upper chord of the present invention and end web member is adopted to be combined with concrete rib plate-girder by WELDING STUDS and resistance to plucking key, under Vehicle Load, upper chord and the common pressurized of precast concrete bridge deck, lower chord bear pulling force separately, and the vertical shear through web member transmission is transmitted to beam rib by the WELDING STUDS between end web member and beam rib.
The present invention can give full play to concrete compression, the mechanical property of steel tension, effectively reduces the deadweight of wide concrete rib plate-girder transversary, reduces the scale on drag-line, tower (arch rib) and basis, has evaded wide beam effect; Adopt prefabrication, can accelerating construction progress greatly, save construction cost, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is facade structures schematic diagram of the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the B-B sectional drawing of Fig. 1;
Fig. 4 is the structure top view of the resistance to plucking key pipe in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
With reference to Fig. 1-4, upper chord 1, lower chord 2 termination connect end web member 3, centre connects middle web member 4 by gusset plate 5, end web member 3 connects concrete beam rib 10 by WELDING STUDS 6, upper chord 1 connects precast concrete bridge deck 8 along bridge to cast-in-place seam 11, the cast-in-place seam 12 of bridge deck direction across bridge by WELDING STUDS 6, bridge deck concrete, the coagulation balk side of body 9, establishes resistance to plucking key 7(to see Fig. 4 in upper chord 1 and concrete beam rib 10 junction).
Upper chord 1, lower chord 2 and end web member 3 cross section are " work " font cross section, middle web member 4 cross section is " L " type cross section, and resistance to plucking key 7 is the U-shaped reinforcing bar of semicircular arc for one end, is connected between each parts by weld seam or bolt.
Upper chord 1 and end web member 3 are combined with concrete rib plate-girder by WELDING STUDS 6 and resistance to plucking key 7, under Vehicle Load, upper chord and the common pressurized of bridge deck, lower chord bear pulling force separately, and the vertical shear through web member transmission is transmitted to beam rib by the WELDING STUDS between end web member and beam rib.
Be applied to the construction method of the horizontal purlin formula steel work of wide concrete rib plate-girder, concrete steps are as follows:
1) upper and lower chord member 1,2 and end web member 3 assembly welding become framework, welding node plate 5, weld or web member 4 in bolt, welding WELDING STUDS 6 and resistance to plucking key 7;
2) framework of welding node plate, middle web member, WELDING STUDS and resistance to plucking key is transported to on-the-spot preparation to install;
3) mounting rail rib bed die on Hanging Basket or support, the framework of welding node plate, middle web member, WELDING STUDS and resistance to plucking key lifts and adjusts in place;
4) mounting rail rib side form and stalk side of body bed die, assembling reinforcement, prestressed pipeline;
5) pour into a mould beam rib and stalk the side of body concrete and maintenance to the length of time;
6) lay transverse sealing rubber strip at the masthead that winds up of welding node plate, middle web member, WELDING STUDS and resistance to plucking key, and hoisting prefabricated concrete slab 8 is in place;
7) longitudinally cast-in-place seam construction suspension bracket is installed, lays longitudinal sealing rubber strip on suspension bracket top;
8) pour into a mould bridge deck concrete along bridge to cast-in-place seam 11, the cast-in-place seam 12 of bridge deck direction across bridge, maintenance, to the length of time, removes interim suspension bracket.
Precast concrete bridge deck 8 of the present invention, the impact of reduce concrete shrinkage, creeping.Resistance to plucking key 7 is established with concrete beam rib junction, the hogging moment produced at structure end under Local Loads operating mode can be resisted at the coagulation balk side of body.
For eliminating the downwarp Δ produced by the deadweight of framework, prefabricated bridge and deck paving, laterally linear after ensureing into bridge, camber Δ/L that upper chord 1 two ends should have middle high two ends low with end web member 3, in formula, L is 1/2 of upper chord 1 length.
The framework that the present invention is made up of upper chord 1, lower chord 2, end web member 3 and middle web member 4 can at produce in factory, and when produce in factory, upper chord 1 rotates up Δ/L radian with two ends and end web member 3 center line intersection point for basic point, forms the camber that middle high two ends are low.
Claims (4)
1. be applied to the horizontal purlin formula steel work of wide concrete rib plate-girder, it is characterized in that upper chord, lower chord termination connects end web member, middlely connect middle web member by gusset plate, end web member is by shearing nail joint concrete beam rib; Upper chord by WELDING STUDS, bridge deck concrete along bridge to cast-in-place seam, bridge deck direction across bridge is cast-in-place sews up precast concrete bridge deck, coagulation balk is coerced; Resistance to plucking key is established with concrete beam rib junction at the coagulation balk side of body.
2. the horizontal purlin formula steel work being applied to wide concrete rib plate-girder according to claim 1, it is characterized in that upper chord (1), lower chord (2) and end web member (3) cross section for " work " font cross section, middle web member (4) cross section be " L " type cross section, resistance to plucking key (7) for one end be the U-shaped reinforcing bar of semicircular arc.
3. the construction method being applied to the horizontal purlin formula steel work of wide concrete rib plate-girder according to claim 1, is characterized in that concrete steps are as follows:
1) upper and lower chord member and end web member assembly welding become framework, welding node plate, weld or web member in bolt, welding WELDING STUDS and resistance to plucking key;
2) framework of welding node plate, middle web member, WELDING STUDS and resistance to plucking key is transported to on-the-spot preparation to install;
3) mounting rail rib bed die on Hanging Basket or support, the framework of welding node plate, middle web member, WELDING STUDS and resistance to plucking key lifts and adjusts in place;
4) mounting rail rib side form and stalk side of body bed die, assembling reinforcement, prestressed pipeline;
5) pour into a mould beam rib and stalk the side of body concrete and maintenance to the length of time;
6) lay transverse sealing rubber strip at the masthead that winds up of welding node plate, middle web member, WELDING STUDS and resistance to plucking key, and hoisting prefabricated concrete slab is in place;
7) longitudinally cast-in-place seam construction suspension bracket is installed, lays longitudinal sealing rubber strip on suspension bracket top;
8) pour into a mould bridge deck concrete along bridge to cast-in-place seam, the cast-in-place seam of bridge deck direction across bridge, maintenance, to the length of time, removes interim suspension bracket.
4. the construction method being applied to the horizontal purlin formula steel work of wide concrete rib plate-girder according to claim 3, it is characterized in that camber Δ/L that upper chord (1) has middle high two ends low, in formula, Δ is the downwarp produced by the deadweight of framework, prefabricated bridge and deck paving, and L is 1/2 of upper chord (1) length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410129117.XA CN103911948B (en) | 2014-04-01 | 2014-04-01 | Be applied to horizontal purlin formula steel work and the construction method thereof of wide concrete rib plate-girder |
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| CN201410129117.XA CN103911948B (en) | 2014-04-01 | 2014-04-01 | Be applied to horizontal purlin formula steel work and the construction method thereof of wide concrete rib plate-girder |
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| CN103911948A CN103911948A (en) | 2014-07-09 |
| CN103911948B true CN103911948B (en) | 2016-01-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110331647B (en) * | 2019-07-02 | 2024-08-23 | 中铁大桥勘测设计院集团有限公司 | Urban rail transit combined beam and construction method thereof |
| CN110331646B (en) * | 2019-07-02 | 2024-11-26 | 中铁大桥勘测设计院集团有限公司 | Urban rail transit combined beam and construction method thereof |
| CN111794077A (en) * | 2020-07-10 | 2020-10-20 | 重庆市交通规划勘察设计院有限公司 | A new type of truss-type diaphragm for stiffening steel box girder of a suspension bridge and its operation method |
| CN113668358B (en) * | 2021-08-19 | 2023-02-28 | 中铁第四勘察设计院集团有限公司 | Core plate type steel-concrete combined arch rib structure and construction method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09324406A (en) * | 1996-06-04 | 1997-12-16 | Fujisen Kyoryo Doboku Kk | Floor plate |
| CN202139530U (en) * | 2011-06-22 | 2012-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Single cell box long cantilever and box girder integrated structure |
| JP4977110B2 (en) * | 2008-10-24 | 2012-07-18 | 大成建設株式会社 | Composite digit structure and composite digit construction method |
| CN103215887A (en) * | 2013-04-19 | 2013-07-24 | 中铁工程设计咨询集团有限公司 | Truss connecting beam |
| CN103541299A (en) * | 2012-07-13 | 2014-01-29 | 中铁工程设计咨询集团有限公司 | A top-supporting triangular truss steel truss combined beam |
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2014
- 2014-04-01 CN CN201410129117.XA patent/CN103911948B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09324406A (en) * | 1996-06-04 | 1997-12-16 | Fujisen Kyoryo Doboku Kk | Floor plate |
| JP4977110B2 (en) * | 2008-10-24 | 2012-07-18 | 大成建設株式会社 | Composite digit structure and composite digit construction method |
| CN202139530U (en) * | 2011-06-22 | 2012-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Single cell box long cantilever and box girder integrated structure |
| CN103541299A (en) * | 2012-07-13 | 2014-01-29 | 中铁工程设计咨询集团有限公司 | A top-supporting triangular truss steel truss combined beam |
| CN103215887A (en) * | 2013-04-19 | 2013-07-24 | 中铁工程设计咨询集团有限公司 | Truss connecting beam |
Non-Patent Citations (1)
| Title |
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| 大跨悬索桥桁架加劲梁的选型和设计;彭旺虎等;《公路交通科技》;20090331;第26卷(第3期);第80-86页 * |
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