CN106400666A - Prestressed concrete-corrugated web steel box connecting beam hybrid beam structural system - Google Patents

Prestressed concrete-corrugated web steel box connecting beam hybrid beam structural system Download PDF

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Publication number
CN106400666A
CN106400666A CN201610818784.8A CN201610818784A CN106400666A CN 106400666 A CN106400666 A CN 106400666A CN 201610818784 A CN201610818784 A CN 201610818784A CN 106400666 A CN106400666 A CN 106400666A
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China
Prior art keywords
steel
corrugated web
prestressed concrete
box
structural
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Pending
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CN201610818784.8A
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Chinese (zh)
Inventor
李明鸿
宗周红
王李麒
许有胜
林元铮
刘路
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Southeast University
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Southeast University
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Priority to CN201610818784.8A priority Critical patent/CN106400666A/en
Publication of CN106400666A publication Critical patent/CN106400666A/en
Pending legal-status Critical Current

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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
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced
    • E01D2101/268Composite concrete-metal

Abstract

The invention discloses a novel hybrid beam structural system. The novel hybrid beam structural system comprises a corrugated web steel box connecting beam segment and prestressed concrete box beam segments. The prestressed concrete box beam segments are located on the two sides of the corrugated web steel box connecting beam segment. The novel hybrid beam structural system is mainly used for a continuous beam bridge or a rigid frame bridge. The midspan part of a main span is the corrugated web steel box connecting beam, the rest part of the main span and sidespans are prestressed concrete box beams, and steel-concrete composite segments are used for connection transition between the prestressed concrete box beams and the corrugated web steel box connecting beam. The novel hybrid beam structural system overcomes the defects of a traditional prestressed concrete box beam unitary system and defects of a traditional steel box beam unitary system, and has the beneficial effects of being good in stress performance and economical efficiency, high in span capacity and the like. According to the structural system, the dead load is effectively reduced, the span capacity is improved, the midspan deflection can be reduced, and the defects that the continuous downwarping and crazing of the midspan of the prestressed concrete box beam, poor stability of an ordinary steel box beam web and poor durability of bridge deck pavement are avoided.

Description

A kind of prestressed concrete-corrugated web steel case bondbeam hybrid beam structural system
Technical field
Type of the present invention belongs to science of bridge building field and in particular to a kind of prestressed concrete-corrugated web steel case bondbeam Hybrid beam structural system.
Background technology
Bridge structure has obtained rapid development from after the 1950's, in recent years because the continuous of material science sends out Exhibition, when prestressed concrete beam bridge is below span 200m, because its low cost, the advantages of rigidity is big, has had become as engineering The first choice of technical staff.But engineering practices find that prestressed concrete beam bridge has beam body when span is larger Span centre continues the problem of downwarp, leads to irregularity of driving a vehicle, and cracking in webs is serious, and a lot of bridges are being not up to its design use It is accomplished by when the time limit carrying out large repairs or direct requirement is removed and reconstructed.Can be to a certain extent using steel box girder bridge Solve the disadvantages mentioned above of prestressed concrete beam bridge, but steel box girder bridge is relatively costly, construction is complicated, deck paving rapid wear etc. lacks Fall into and limit its development and apply.It can be seen that, the prestressed concrete beam bridge of single form cannot meet the need of engineer applied Will.
Application with Wavelike steel webplate concrete composite beam bridge is more and more extensive, and its shortcoming is also increasingly taken seriously, Because the joint portion casting space of lower flange concrete slab and lower flange steel plate is narrow and small, concrete pouring quality is difficult to ensure that.And And, when building Long span Wavelike steel webplate Concrete Combination Continuous Beam bridge, because root deck-molding is very high, need cross dimensions very Big Wavelike steel webplate, can have the shortcomings that following:(1) difficulty of processing of big cross section size Wavelike steel webplate is very big, significantly carries High difficulty of construction and construction cost;(2) shearing resistance of long-span continuous beam bridge root requires very high, the shear buckling of big cross section size Problem remains a difficult problem for puzzlement engineering circles;(3) root deck-molding is too high, Wavelike steel webplate cross dimensions is too big, need setting very Long one section of inner lining concrete section, can increase deadweight and the construction cost of bridge, therefore Wavelike steel webplate concrete combination beam There is limitation in across footpath.
With the development of engineering technology level, the across footpath of bridge also increases continuous, and girder adopts single in length direction Material be often difficult in terms of stress performance and engineering economy obtain a good equalization point.Therefore, in eighties of last century The seventies, engineers and technicians propose the structure shape that the length direction in girder is used in mixed way using girder steel and beams of concrete Formula, such as New Chongqing Shibanpo Yangtze River Bridge, Wenzhou the Oujiang River bridge etc..This version is compared with single structure in stress performance Lifted with economy aspect, but still there are inevitable other problemses:Girder steel section and prestressed concrete beam section Stiffness variation is big, and transition section structure is complicated, leads to transition irregularity, power transmission effect poor;Paving steel bridge deck is relatively costly, constructs Journey is complicated, and the durability mated formation compared with concrete bridge deck is poor;Girder steel section positioned at main span span centre part is in sagging moment area, The pressurized mechanics feature that can not give full play to steel of top steel plate, and top board and web need to arrange substantial amounts of ribbed stiffener to avoid The stability problem of steel plate.
Structure described above form greatly limit continuous bridge or the development of rigid frame bridge span ability.
Content of the invention
Goal of the invention:It is an object of the invention to provide a kind of prestressed concrete-corrugated web steel case bondbeam hybrid beam Structural system, can make full use of steel and the respective advantage of concrete material, avoid its shortcoming in terms of stress simultaneously, In the case of the span ability of lifting bridge, solve the connectivity problem of hybrid beam, the difficult problem of deck paving, under the influence of temperature Problem of second inner force etc., enormously simplify work of mating formation for mechanical requirement, and for prestressed concrete beam Duan Yugang Beam connects and leads to stiffness transition irregularity, leads to the shortcoming that road-ability reduces to be improved.
Technical scheme:A kind of prestressed concrete-corrugated web steel case bondbeam hybrid beam structural system, including bridge pier and Girder superstructure, described girder superstructure includes prestressed concrete box girder section, corrugated web steel case combines beam section and steel Mixed adapter section, described corrugated web steel case bondbeam section is located at across the span centre part of bridge main, described prestressed concrete box girder section Positioned at main span abutment portion and end bay, described prestressed concrete box girder section and corrugated web steel case combine and pass through steel between beam section Mixed adapter section connects transition.
Further, corrugated web steel case includes concrete slab and corrugated web steel box structure with reference to beam section, described Concrete slab is connected by shear key with described corrugated web steel box structure.
Further, corrugated web steel box structure includes steel top board, Wavelike steel webplate and steel sole plate, described Wavelike steel webplate It is welded to connect with steel top board and steel sole plate respectively, described steel top board is provided with shear key, described concrete slab and described steel Top board is connected by shear key, and described steel sole plate is provided with longitudinal stiffener, and described longitudinal stiffener is with steel sole plate welding even Connect.
Further, corrugated web steel box structure includes flange plate, Wavelike steel webplate and steel sole plate, described Wavelike steel webplate It is welded to connect with flange plate and steel sole plate respectively, described flange plate is provided with shear key, described concrete slab and flange plate Connected by shear key, described steel sole plate is provided with longitudinal stiffener, described longitudinal stiffener and steel sole plate are welded to connect.
Further, concrete slab can carry out prefabricated, and reserved concrete last-cost joint according to demand with execution conditions, Pass through the cast-in-place connection of shear key with described steel top board or flange plate.
Further, stretch into Wavelike steel webplate to be connected with the web of prestressed concrete box girder section by transverse steel, Side near prestressed concrete box girder section is provided with diaphragm, combines beam section and prestressed concrete in Wavelike steel webplate steel case Box beam section junction arranges open web type steel diaphragm plate.
Further, shear key form can be Welded-Stud Conectors, PBL connector etc..
Beneficial effect:Type patent of the present invention discloses a kind of prestressed concrete-corrugated web steel case bondbeam hybrid beam Structural system, including bridge pier and girder superstructure, has an advantage in that:
(1) beam body is not single prestressed reinforced concrete construction, adopts corrugated web steel case bondbeam, can subtract at span centre Light dead load, solves the problems, such as that prestressed concrete box girder body span centre continues downwarp and cracking, and can effectively reduce beam Height, increases navigational clearance.
(2) corrugated web steel case bondbeam adopts combining structure, and positioned at positive moment of span central point area, compressive region adopts concrete top Plate shape formula, tensile region adopts steel sole plate form, can give full play to concrete and the respective material property of steel.
(3) the corrugated web steel box-concrete composite girder that span centre position is adopted compares existing bondbeam, corrugated web steel The web of case bondbeam adopts Wavelike steel webplate, need not arrange ribbed stiffener, and due to its longitudinal fold effect, can mitigate steel with The temperature second inner force that concrete temperature coefficient of expansion difference causes, and concrete shrinkage and creep cause in girder steel section time in Power;On steel sole plate, the longitudinal stiffener of setting can ensure that steel sole plate uniform force, not unstability.
(4) corrugated web steel case bondbeam adopts concrete slab, can solve the problem that steel in traditional steel-concrete hybrid beam The problems such as box girder bridge floor paving construction complicated, fragile and poor durability.
(5) prestressed concrete box girder section and corrugated web steel case combine and arrange steel reinforced concrete changeover portion between beam section, make pre- answering Power concrete box beam section and corrugated web steel case are relatively reliable with reference to beam section connection power transmission, and rigidity excessively more smoothes out, and increases row The comfort level of car.
(6) can be prefabricated in the factory concrete slab, adopts concrete last-cost joint and Wavelike steel webplate upper limb at the scene The shear key at listrium top connects formation entirety, thus accelerating construction progress.
Instant invention overcomes the respective shortcoming of traditional prestressed concrete box girder and steel box-girder unitary system, there is stress The advantages of good, good economy performance of energy and span ability are high.This structural system effectively mitigates deadweight, increases span ability, and can reduce Mid-span deflection, it is to avoid prestressed concrete box girder span centre continues lacking of downwarp and cracking and ordinary steel box girder web stability difference Point.Corrugated web steel case bondbeam is connected with bridge deck pavement by concrete slab, can avoid common steel box girder bridge face Pavement construction is difficult, fragile and the problems such as poor durability.Wherein corrugated web steel case bondbeam adopts prefabrication, and scene is applied Work is convenient, shortens the completion time of project.
Brief description
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is that corrugated web steel case of the present invention combines beam section schematic cross-section.
Fig. 3 is that corrugated web steel case of the present invention combines the further preferred schematic cross-section of beam section.
Fig. 4 is that corrugated web steel case of the present invention is bowed with prestressed concrete box girder section connected mode horizontal profile with reference to beam section Depending on schematic diagram.
Fig. 5 is that corrugated web steel case of the present invention is further preferably connected with prestressed concrete box girder section with reference to beam section web Mode horizontal profile schematic top plan view.
Fig. 6 is toughened internal stress vertical section schematic diagram of the present invention.
Fig. 7 is toughened internal stress of the present invention and prestressed concrete box girder junction cross-sectional view.
Fig. 8 is toughened internal stress of the present invention and corrugated web steel case bondbeam junction cross-sectional view.
In figure:1st, bridge pier, 2, prestressed concrete box girder section, 3, corrugated web steel case combine beam section, 4, toughened internal stress, 3.1st, concrete slab, 3.2, shear key, 3.3, steel case combine Wavelike steel webplate at beam section, 3.4, longitudinal stiffener, 3.5, Steel sole plate, 3.6, flange plate, 3.7, steel top board, 4.1, Wavelike steel webplate at toughened internal stress, 4.2, inner lining concrete, 4.3, steel Base plate, 4.4, diaphragm, 4.5, base plate peg, 4.6 web pegs, 4.7, transverse steel, 4.8 open web type steel diaphragm plates.
Specific embodiment
Below in conjunction with example shown in accompanying drawing, the invention will be further described.
The invention discloses a kind of prestressed concrete-corrugated web steel case bondbeam hybrid beam structural system, including bridge Pier and girder superstructure, girder superstructure includes prestressed concrete box girder section 2, corrugated web steel case combines beam section 3 and Toughened internal stress 4, corrugated web steel case combines beam section 3 and is located at across the span centre part of bridge main, is the 1/4~1/3 of main span across footpath, in advance Prestressed concrete box beam 2 is located at main span abutment portion and end bay, prestressed concrete box girder section 2 and corrugated web steel case bondbeam Between section 3, transition is connected by toughened internal stress 4.
Prestressed concrete shown in the present invention-corrugated web steel case bondbeam hybrid beam structural system can be in bridge construction According to demand many places setting, wherein bridge span stage casing adopt corrugated web steel case bondbeam 3, at bridge pier fulcrum near adopt Prestressed concrete box girder 2, can mitigate bridge deadweight, reduce bridge mid-span deflection, improve bridge span ability.
In the present invention, prestressed concrete box girder section 2 is combined beam section 3 and ties longitudinally through steel reinforced concrete with corrugated web steel case Close section 4 to link together, constitute continuous beam system.The Wavelike steel webplate 3.3 of corrugated web steel case bondbeam 3 stretches into prestressing force and mixes In solidifying soil box beam section 2 web, and pour inner lining concrete 4.2 inside toughened internal stress 4 web, the Wavelike steel webplate stretching into 4.1 are connected with inner lining concrete 4.2 by web peg 4.6.Corrugated web steel case is with reference to the Wavelike steel webplate stretching into of beam section 3 4.1, it is connected with the web of prestressed concrete box girder section 2 by transverse steel 4.7 or web peg 4.6.Corrugated web Steel case stretches in prestressed concrete box girder base plate with reference to beam section 3 steel sole plate 3.5, steel sole plate 3.5 arranges shear key, and pours Inner lining concrete, is that Loads of Long-span Bridges provides preferable transient mode it is ensured that the stiffness transition smooth-going of linkage section is it is ensured that drive a vehicle Comfortable.
As embodiment of the present invention, corrugated web steel case bondbeam 3 includes concrete slab 3.1 and corrugated web Steel box structure, concrete slab 3.1 is connected by shear connector 3.2 with Wavelike steel webplate steel box structure.
As embodiment of the present invention, corrugated web steel box structure includes steel top board 3.7, Wavelike steel webplate 3.3 and steel Base plate 3.5, Wavelike steel webplate 3.3 is welded to connect with steel top board 3.7 and steel sole plate 3.5 respectively, and steel top board 3.7 is provided with longitudinally to be cut Power part 3.2, concrete slab 3.1 is connected by shear key 3.2 with steel top board 3.7.
As embodiment of the present invention, corrugated web steel box structure includes flange plate 3.6, Wavelike steel webplate 3.3 and steel Base plate 3.5, flange plate 3.6 is welded to connect with Wavelike steel webplate 3.3 upper limb, and concrete slab 3.1 and flange plate 3.6 pass through to cut Power part 3.2 connects.
As the preferred version of the present invention, concrete slab 3.1 can carry out prefabricated, and in advance according to demand with execution conditions Stay concrete last-cost joint, pass through the cast-in-place connection of shear key 3.2 with flange plate 3.6.
As embodiment of the present invention, steel sole plate 3.5 is provided with longitudinal stiffener 3.4, longitudinal stiffener 3.4 and steel Base plate 3.5 is welded to connect.
As embodiment of the present invention, toughened internal stress 4 is to connect prestressed concrete box girder section 2 and corrugated web steel Case combines the transition portion of beam section 3, is arranged at positive and negative moment of flexure alternating action area, its connecting structure includes stretching into prestressed concrete Stretch into Wavelike steel webplate 4.1 in native box beam 2 web, pour inner lining concrete 4.2 inside Wavelike steel webplate 4.1 and formed stretching into Compound web plate, setting shear key 4.5 casting concrete forms combination base plate on steel sole plate 4.3, and with prestressed concrete The junction of native box beam section 2 is provided with diaphragm 4.4.
As embodiment of the present invention, stretch into Wavelike steel webplate 4.1 and be connected with inner lining concrete 4.2 by shear key; Stretch into Wavelike steel webplate 4.1 to be connected with the web of prestressed concrete beam 2 by transverse steel 4.7.
As the preferred version of the present invention, toughened internal stress 4 stretch into Wavelike steel webplate 4.1 pass through web peg 4.6 with The web of prestressed concrete box girder 2 connects.
As embodiment of the present invention, be combined the junction setting of beam section 3 with corrugated web steel case in toughened internal stress 4 Open web type steel diaphragm plate 4.8.
As embodiment of the present invention, shear key form can be Welded-Stud Conectors, PBL connector etc..
As embodiment of the present invention, hybrid beam structural system can apply to continuous bridge or rigid frame bridge.
Certainly, the invention is not limited to above-mentioned embodiment, and those of ordinary skill in the art are without prejudice to this Equivalent variations or replacement also can be made, these equivalent deformation and replacement are all contained in the application under the premise of the spirit of bright creation Within claim limited range.

Claims (7)

1. a kind of prestressed concrete-corrugated web steel case bondbeam hybrid beam structural system, including bridge pier and girder top structure Make it is characterised in that:Described girder superstructure includes prestressed concrete box girder section (2), corrugated web steel case combines beam section (3) and toughened internal stress (4), described corrugated web steel case combines beam section (3) and is located at across the span centre part of bridge main, described prestressing force Concrete box beam section (2) is located at main span abutment portion and end bay, described prestressed concrete box girder section (2) and corrugated web steel case In conjunction between beam section (3), transition is connected by toughened internal stress (4).
2. prestressed concrete according to claim 1-corrugated web steel case bondbeam hybrid beam structural system, its feature It is:Described corrugated web steel case combines beam section (3) and includes concrete slab (3.1) and corrugated web steel box structure, described Concrete slab (3.1) is connected by shear connector (3.2) with described Wavelike steel webplate steel box structure.
3. prestressed concrete according to claim 2-corrugated web steel case bondbeam hybrid beam structural system, its feature It is:Described corrugated web steel box structure includes steel top board (3.7), Wavelike steel webplate (3.3) and steel sole plate (3.5), described ripple Shape steel web (3.3) is welded to connect with steel top board (3.7) and steel sole plate (3.5) respectively, and described steel top board (3.7) is provided with shearing Part (3.2), described concrete slab (3.1) is connected by shear key (3.2) with described steel top board (3.7), described steel sole plate (3.5) it is provided with longitudinal stiffener (3.4) on, described longitudinal stiffener (3.4) and steel sole plate (3.5) are welded to connect.
4. prestressed concrete according to claim 2-corrugated web steel case bondbeam hybrid beam structural system, its feature It is:Described corrugated web steel box structure includes flange plate (3.6), Wavelike steel webplate (3.3) and steel sole plate (3.5), described ripple Shape steel web (3.3) is welded to connect with flange plate (3.6) and steel sole plate (3.5) respectively, and described flange plate (3.6) is provided with shearing Part (3.2), described concrete slab (3.1) is connected by shear key (3.2) with flange plate (3.6), described steel sole plate (3.5) On be provided with longitudinal stiffener (3.4), described longitudinal stiffener (3.4) and steel sole plate (3.5) are welded to connect.
5. the prestressed concrete according to claim 3 or 4-corrugated web steel case bondbeam hybrid beam structural system, its It is characterised by:Described concrete slab (3.1) can carry out prefabricated according to demand with execution conditions, and pours after reserved concrete Seam, passes through the cast-in-place connection of shear key (3.2) with described steel top board (3.7) or flange plate (3.6).
6. toughened internal stress (4) according to claim 1 it is characterised in that:The described Wavelike steel webplate (4.1) that stretches into passes through Transverse steel (4.7) is connected with the web of prestressed concrete box girder section (2), near prestressed concrete box girder section (2) Side is provided with diaphragm (4.4), combines beam section (3) and prestressed concrete box girder section (2) junction in Wavelike steel webplate steel case Setting open web type steel diaphragm plate (4.8).
7. prestressed concrete according to claims 2 to 6-corrugated web steel case bondbeam hybrid beam structural system, its It is characterised by:Described shear key form can be Welded-Stud Conectors, PBL connector etc..
CN201610818784.8A 2016-09-12 2016-09-12 Prestressed concrete-corrugated web steel box connecting beam hybrid beam structural system Pending CN106400666A (en)

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Application Number Priority Date Filing Date Title
CN201610818784.8A CN106400666A (en) 2016-09-12 2016-09-12 Prestressed concrete-corrugated web steel box connecting beam hybrid beam structural system

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN108824221A (en) * 2018-06-22 2018-11-16 长沙理工大学 Concrete continuous girder bridge web replacing and reinforcing method based on corrugated sheet steel
CN108914785A (en) * 2018-09-26 2018-11-30 中铁四局集团有限公司 A kind of Hanging Basket cantilever pouring construction of multicell Wavelike steel webplate continuous bridge
CN111021227A (en) * 2019-11-29 2020-04-17 东南大学 Steel-concrete composite structure continuous box girder and manufacturing method thereof

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Publication number Priority date Publication date Assignee Title
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CN108914785A (en) * 2018-09-26 2018-11-30 中铁四局集团有限公司 A kind of Hanging Basket cantilever pouring construction of multicell Wavelike steel webplate continuous bridge
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CN111021227A (en) * 2019-11-29 2020-04-17 东南大学 Steel-concrete composite structure continuous box girder and manufacturing method thereof
CN111021227B (en) * 2019-11-29 2021-06-01 东南大学 Steel-concrete composite structure continuous box girder and manufacturing method thereof

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Application publication date: 20170215

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