CN208748501U - A kind of list case concrete-more T-steels composite continuous beam bridge structure - Google Patents

A kind of list case concrete-more T-steels composite continuous beam bridge structure Download PDF

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Publication number
CN208748501U
CN208748501U CN201821129994.7U CN201821129994U CN208748501U CN 208748501 U CN208748501 U CN 208748501U CN 201821129994 U CN201821129994 U CN 201821129994U CN 208748501 U CN208748501 U CN 208748501U
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steel
plate
changeover portion
concrete
steel beam
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CN201821129994.7U
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彭卫兵
沈佩文
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

The utility model discloses a kind of single case concrete-more T-steels composite continuous beam bridge structures, end bay and in across side end use concrete box girder, if span centre uses the more T-steel beam sections being welded by dry plate T-steel beam, concrete solid-section, toughened internal stress and girder steel changeover portion are set gradually between the concrete box girder and more T-steel beam sections;Monolithic T-steel beam include girder steel cover board, several be disposed in parallel in girder steel cover board lower surface steel beam web plate and several steel beam web plate lower end is set and the lateral binder vertical with steel beam web plate;Longitudinal stiffener is equipped on the steel beam web plate and lateral binder.Using the utility model, it can be achieved that steel construction open outdoor welding completely, while self weight is alleviated, saves cost.

Description

A kind of list case concrete-more T-steels composite continuous beam bridge structure
Technical field
The utility model belongs to technical field of bridge engineering, more particularly, to a kind of single case concrete-more T-steels composite continuous beam Bridge structure.
Background technique
The design of steel reinforced concrete engaging portion is one of the key technology of large span mixing bridge.Steel construction and mixed in steel reinforced concrete engaging portion The reasonability of connecting structure determines its bearing capacity and deformation performance between Xtah Crude Clay structure, is then directly related to the peace of bridge Quan Xing.
Existing steel-concrete mixing Continuous Bridge, mainly using single case concrete to the form of order case steel box-girder.
The Chinese patent literature of Publication No. CN104674647A discloses a kind of structure for mixing beam bridge steel reinforced concrete engaging portion, Including concrete box girder and steel box-girder, steel bearing plate is equipped between concrete box girder and steel box-girder, steel bearing plate and steel box-girder are solid Fixed connection, the one side of steel bearing plate towards beams of concrete are welded with multiple rows of shear plate equipped with aperture, and shear plate is embedded in mixed in advance In solidifying soil box beam and the longitudinal reinforcement overlap joint welding with concrete box girder, and run through reinforcing bar shape in the corresponding aperture of every row's shear plate At PBL shear connector;Wherein, concrete box girder is embedded with the part of shear plate and steel bearing plate forms toughened internal stress, remaining Concrete box girder, steel box-girder are respectively formed concrete changeover portion, girder steel changeover portion.
Above-mentioned utility model structure be suitble to reason, stress is clear, bearing capacity is good, and economic security, convenient for construction.But this Kind docking form still has some limitations.Whole single box steel box-girder quality is big, and handling is highly difficult, closing inside single case Space is big, and welding workload is big, and carrying out a large amount of toxic gases of weld job generation can not shed, and will cause very to the body of welder Big injury.
Utility model content
The utility model provides a kind of single case concrete-more T-steels composite continuous beam bridge structure, it can be achieved that steel construction is opened completely Put the outdoor welding of formula.
A kind of list case concrete-more T-steels composite continuous beam bridge structure, which is characterized in that end bay and in across side end using mixed Solidifying soil box beam, if span centre uses the more T-steel beam sections being welded by dry plate T-steel beam, the concrete box girder and more T-steels Concrete solid-section, toughened internal stress and girder steel changeover portion are set gradually between beam section;
Monolithic T-steel beam include girder steel cover board, several be disposed in parallel in girder steel cover board lower surface steel beam web plate and Steel beam web plate lower end is arranged in and the lateral binder vertical with steel beam web plate in several;On the steel beam web plate and lateral binder Equipped with longitudinal stiffener.
The bridge structure of the utility model is welded on open space progress, reduces injury of the welding gas to Welder And improve construction quality.
The hollow section of the concrete box girder gradually becomes smaller toward concrete solid-section direction, is finally transitioned into concrete reality Solid section in heart section.
The toughened internal stress is made of flange plate, web, top plate and bottom plate, and the flange plate is placed in top plate two sides, The web vertical is fixed between top plate and bottom plate;The top plate is equipped with spaced apart PBL plate and pouring hole;It is described Web and PBL plate on be equipped with preformed hole.
The girder steel changeover portion is in the close toughened internal stress side by changeover portion flange plate, changeover portion web, transition Section top plate and changeover portion bottom plate are constituted, the changeover portion flange plate, changeover portion web, changeover portion top plate, changeover portion bottom plate point It is not linked together with the flange plate, web, top plate and bottom plate of the toughened internal stress by penetration weld.
The girder steel changeover portion is put more energy into the changeover portion steel diaphragm for being equipped with quadrature arrangement close to T-steel beam side with longitudinal Rib, the changeover portion steel diaphragm are arranged at equal intervals along bridge length direction, and the changeover portion longitudinal stiffener is toward T-steel beam side It is become narrow gradually to width, the longitudinal stiffener being finally transitioned on T-steel beam.
Steel changeover portion front end is put more energy into rib width, and rear end ribbed stiffener is narrow, realizes rigidity to narrow variation by width by ribbed stiffener Smooth transition.
The T-steel beam is equally spaced steel diaphragm along bridge length direction, if by the steel diaphragm by dry plate T Section steel beam welds together.The Space Beam lattice that steel diaphragm and multi-disc T beam are formed provide lateral shearing resistance and antitorque.By using T Section steel beam welds the combining form of steel diaphragm at equal intervals, alleviates self weight, saves cost.
Outermost T-steel beam sponson is provided with girder steel longitudinal stiffener and vertical supporting block.
Preferably, the arrangement spacing of the steel diaphragm is 1.5m along bridge length direction.
Preferably, the T-steel beam is welded by steel diaphragm and girder steel changeover portion.
The utility model has the following beneficial effects:
1, open outdoor welding can be used in the multi-disc T-steel beam of the utility model, reduces welding gas to Welder Injury and improve construction quality, vehicle transport can be used in monolithic T-steel beam.
2, the utility model be avoid rigidity discontinuously caused by problem of stress concentration, in addition to setting toughened internal stress with Outside, girder steel changeover portion is also added.Girder steel changeover portion is put more energy into rib width close to toughened internal stress, close to putting more energy into for T-steel beam side Rib is narrow, by ribbed stiffener by the wide smooth transition for realizing rigidity to narrow variation.
3, the utility model welds the combining form of steel diaphragm by using T-steel beam at equal intervals, steel diaphragm and more The Space Beam lattice that piece T beam is formed provide lateral shearing resistance and antitorque, alleviate self weight, save cost.
Detailed description of the invention
Fig. 1 is that the utility model embodiment constructs connection schematic diagram;
Fig. 2 is the schematic cross-section of the utility model embodiment concrete box girder;
Fig. 3 is the structural schematic diagram of the utility model embodiment concrete changeover portion;
Fig. 4 is the schematic cross-section of the utility model embodiment concrete box girder solid-section;
Fig. 5 is toughened internal stress structural schematic diagram of the utility model embodiment close to concrete solid-section side;
Fig. 6 is toughened internal stress structural schematic diagram of the utility model embodiment close to girder steel changeover portion side;
Fig. 7 is girder steel transition section structure schematic diagram of the utility model embodiment close to toughened internal stress side;
Fig. 8 is girder steel transition section structure schematic diagram of the utility model embodiment close to more T-steel beam sections side;
Fig. 9 is the more T-steel beam section Plays schematic cross-sections of the utility model embodiment;
Figure 10 is big diaphragm plate schematic cross-section in the more T-steel beam sections of the utility model embodiment;
Figure 11 is small diaphragm plate schematic cross-section in the more T-steel beam sections of the utility model embodiment.
In figure: 1 is concrete box beam section;2 be concrete solid-section;3 be toughened internal stress;4 be girder steel changeover portion;5 are More T-steel beam sections;6 be preformed hole;7 be PBL plate;8 be pouring hole;9 be toughened internal stress flange plate;10 be toughened internal stress abdomen Plate;11 be toughened internal stress top plate;12 be toughened internal stress bottom plate;13 be steel changeover portion flange plate;14 be steel changeover portion web; 15 be steel changeover portion top plate;16 be steel changeover portion bottom plate;17 be T-steel beam sponson;18 be steel changeover portion longitudinal stiffener; 19 be steel diaphragm;20 be girder steel cover board;21 be steel beam web plate;22 be lateral binder;23 be girder steel longitudinal stiffener.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of list case concrete-more T-steels composite continuous beam bridge structure, by the concrete box beam section 1 of most side end Start, is sequentially connected concrete solid-section 2, toughened internal stress 3, girder steel changeover portion 4 and more T-steel beam sections 5.
The section of concrete box beam section 1 is as shown in Fig. 2, concrete box beam section 1 is provided between concrete solid-section 2 One section concrete changeover portion, as shown in figure 3, box beam hollow section by gradually becoming smaller greatly, is finally transitioned into concrete solid section, Concrete solid section is as shown in Figure 4.
As shown in Figure 5, Figure 6, toughened internal stress 3 is by toughened internal stress flange plate 9, toughened internal stress web 10, steel reinforced concrete knot It closes section top plate 11 and toughened internal stress bottom plate 12 is constituted, toughened internal stress flange plate 9 is placed in 11 two sides of toughened internal stress top plate, steel Mixed adapter section web 10 is vertically fixed between toughened internal stress top plate 11 and toughened internal stress bottom plate 12;Toughened internal stress top plate 11 are equipped with spaced apart PBL plate 7 and pouring hole 8;Preformed hole 6 is equipped on toughened internal stress web 10 and PBL plate 7.
Concrete solid-section 2 and toughened internal stress 3 use synchronous construction, bind transverse steel, steel inside toughened internal stress 3 Muscle passes through the preformed hole 6 of partition, PBL plate 7 is welded at toughened internal stress top plate 11, the preformed hole on plate is for later period and steel knot Structure part is unified assembling reinforcement and is stayed.Also there are the pouring holes 8 of ellipse at toughened internal stress top plate 11, to concrete solid-section 2 with 3 reinforcing bar of toughened internal stress bound after-pouring concrete when, the concrete of 3 part of toughened internal stress just passes through ellipse and pours Hole 8 is built to pour to inner space.
As shown in fig. 7, girder steel changeover portion 4 is in close 3 side of toughened internal stress by changeover portion flange plate 13, changeover portion web 14, changeover portion top plate 15 and changeover portion bottom plate 16 are constituted, changeover portion flange plate 13, changeover portion web 14, changeover portion top plate 15, mistake Section bottom plate 16 is crossed respectively in conjunction with toughened internal stress flange plate 9, toughened internal stress web 10, toughened internal stress top plate 11, steel reinforced concrete Section bottom plate 12 is linked together by penetration weld.
As shown in figure 8, girder steel changeover portion 4 is in the changeover portion steel tabula for being equipped with quadrature arrangement close to more 5 sides of T-steel beam section Beam 19 and longitudinal stiffener 18, changeover portion steel diaphragm 19 are arranged at equal intervals along bridge length direction, and changeover portion longitudinal stiffener 18 is toward T Section steel beam direction width becomes narrow gradually, the girder steel longitudinal stiffener 23 being finally transitioned on T-steel beam.
If the T-steel beam that more T-steel beam sections 5 are welded and fixed by dry plate forms, the section of monolithic T-steel beam is cut for standard Face, if as shown in figure 9, include girder steel cover board 20, several be disposed in parallel in steel beam web plate 21 on 20 lower surface of cover board and Dry is arranged in the lateral binder 22 perpendicular on 21 lower surface of steel beam web plate and with steel beam web plate 21;Steel beam web plate 21 and transverse direction Girder steel longitudinal stiffener 23 is equipped on binder 22.
T-steel beam is equally spaced steel diaphragm along bridge length direction, if being welded dry plate T-steel beam by steel diaphragm Together.Section of more T-steel beam sections 5 at steel diaphragm is divided into big diaphragm plate section and small diaphragm plate section.Big diaphragm plate Section is as shown in Figure 10, is equipped with steel diaphragm on girder steel cover board 20 and lateral binder 22, is arranged on steel beam web plate 21 perpendicular To supporting block.Outermost T-steel beam sponson 17 is also provided with girder steel longitudinal stiffener 23 and vertical supporting block.Small diaphragm plate Section is as shown in figure 11, and steel diaphragm 19 is only arranged on girder steel cover board 20, and vertical supporting block is being arranged on steel beam web plate 21.
The connection type that more T-steel beam sections 5 are combined using standard section, big diaphragm plate section and small diaphragm plate section, bridge Length direction uses standard section form, then the big diaphragm plate section of spaced set and small diaphragm plate section.More T-steel beam sections 5 Big diaphragm plate section is used with the position that girder steel changeover portion 4 combines.

Claims (8)

1. a kind of list case concrete-more T-steels composite continuous beam bridge structure, which is characterized in that end bay and in across side end use coagulation Native box beam, if span centre uses the more T-steel beam sections being welded by dry plate T-steel beam, the concrete box girder and more T-steel beams Concrete solid-section, toughened internal stress and girder steel changeover portion are set gradually between section;
Monolithic T-steel beam include girder steel cover board, several be disposed in parallel in the steel beam web plate of girder steel cover board lower surface and several It is a that steel beam web plate lower end is set and the lateral binder vertical with steel beam web plate;It is equipped on the steel beam web plate and lateral binder Longitudinal stiffener.
2. list case concrete-more T-steels composite continuous beam bridge structure according to claim 1, which is characterized in that the concrete The hollow section of box beam gradually becomes smaller toward concrete solid-section direction, the solid section being finally transitioned into concrete solid-section.
3. list case concrete-more T-steels composite continuous beam bridge structure according to claim 1, which is characterized in that the steel reinforced concrete Adapter section is made of flange plate, web, top plate and bottom plate, and the flange plate is placed in top plate two sides, and the web vertical is fixed on Between top plate and bottom plate;PBL plate and pouring hole are arranged at intervals on the top plate;It is equipped on the web and PBL plate Preformed hole.
4. list case concrete-more T-steels composite continuous beam bridge structure according to claim 3, which is characterized in that the girder steel mistake Section is crossed in the close toughened internal stress side by changeover portion flange plate, changeover portion web, changeover portion top plate and changeover portion bottom plate Constitute, the changeover portion flange plate, changeover portion web, changeover portion top plate, changeover portion bottom plate respectively with the toughened internal stress Flange plate, web, top plate and bottom plate linked together by penetration weld.
5. list case concrete-more T-steels composite continuous beam bridge structure according to claim 1 or 4, which is characterized in that the steel Beam changeover portion is equipped with the changeover portion steel diaphragm and changeover portion longitudinal stiffener of quadrature arrangement in close T-steel beam side, described Changeover portion steel diaphragm be arranged at equal intervals along bridge length direction, the changeover portion longitudinal stiffener is toward T-steel beam direction width It becomes narrow gradually, the longitudinal stiffener being finally transitioned on T-steel beam.
6. list case concrete-more T-steels composite continuous beam bridge structure according to claim 1, which is characterized in that rectangular along bridge To steel diaphragm being equally spaced, if welding together dry plate T-steel beam by the steel diaphragm.
7. list case concrete-more T-steels composite continuous beam bridge structure according to claim 6, which is characterized in that rectangular along bridge To the arrangement spacing of the steel diaphragm is 1.5m.
8. list case concrete-more T-steels composite continuous beam bridge structure according to claim 6, which is characterized in that the T-type Girder steel is welded by steel diaphragm and girder steel changeover portion.
CN201821129994.7U 2018-07-17 2018-07-17 A kind of list case concrete-more T-steels composite continuous beam bridge structure Active CN208748501U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108797305A (en) * 2018-07-17 2018-11-13 浙江工业大学 A kind of list case concrete-more T-steels composite continuous beam bridge structure
CN111455807A (en) * 2020-04-03 2020-07-28 中国电建集团中南勘测设计研究院有限公司 Beam-end prestressed structure and construction method thereof
CN114592440A (en) * 2022-03-21 2022-06-07 武汉市规划设计有限公司 Fabricated steel-concrete composite bridge superstructure and construction process thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108797305A (en) * 2018-07-17 2018-11-13 浙江工业大学 A kind of list case concrete-more T-steels composite continuous beam bridge structure
CN108797305B (en) * 2018-07-17 2023-09-01 浙江工业大学 Single-box concrete-multi-T-shaped steel mixed continuous beam bridge structure
CN111455807A (en) * 2020-04-03 2020-07-28 中国电建集团中南勘测设计研究院有限公司 Beam-end prestressed structure and construction method thereof
CN111455807B (en) * 2020-04-03 2021-11-26 中国电建集团中南勘测设计研究院有限公司 Beam-end prestressed structure and construction method thereof
CN114592440A (en) * 2022-03-21 2022-06-07 武汉市规划设计有限公司 Fabricated steel-concrete composite bridge superstructure and construction process thereof
CN114592440B (en) * 2022-03-21 2024-03-19 武汉市规划设计有限公司 Upper structure of assembled steel-concrete combined bridge and construction process thereof

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