CN105714666A - Transverse stiffening ring based on double-layer traffic concrete box girder bridge - Google Patents
Transverse stiffening ring based on double-layer traffic concrete box girder bridge Download PDFInfo
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- CN105714666A CN105714666A CN201510967162.7A CN201510967162A CN105714666A CN 105714666 A CN105714666 A CN 105714666A CN 201510967162 A CN201510967162 A CN 201510967162A CN 105714666 A CN105714666 A CN 105714666A
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- stiffening ring
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- lateral stiffening
- layer traffic
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Abstract
The invention discloses a transverse stiffening ring based on a double-layer traffic concrete box girder bridge, and provides a reinforcing method for arranging a stiffening ring structure inside a double-layer traffic concrete box girder bridge chamber. A conventional concrete reinforcing steel bar material can be utilized, meanwhile the use amount of concrete can be reduced, and overall rigidity and overall stress property of a box girder can be improved. Stiffening rings are arranged at certain intervals in a span direction in the double-layer traffic concrete box girder bridge, so that the overall structure property can be improved. According to the technical scheme, the double-layer traffic concrete box girder bridge is combined with a common frame structure to implement related structural design on the stiffening rings, the stiffening rings of different specifications are arranged at end parts of a double-layer traffic concrete box girder at certain intervals in the span direction according to the stress property, and thus the overall property of the box girder bridge can be improved; the transverse stiffening ring is widely applicable to construction of an urban small-span double-layer traffic bridge girder, and particularly applicable to multilane combined highway and railway structure construction, urban light rail construction and three-dimensional transportation.
Description
Technical field
The present invention relates to a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring.
Background technology
Urban land resource day is becoming tight a few days ago, most built Urban Bridge are blocked up day by day, the existing Urban Bridge in the world is faced with the Missions of sustainable development, although bridge being widened and can alleviating traffic flow, but can in the face of the various difficult problems such as build that the design and construction difficulty of wide bridge, floor space be big and cost is high, therefore double-layer traffic bridge is able to formation and development.
The development of double-decker bridge can be divided into two stages, i.e. steel truss double-decker bridge and prestressed concrete box girder double-decker bridge.Comparatively speaking, the former technology maturation, but cost is higher, is mainly applied in across river, the Longspan Bridge of cross a river, achieved with good economic benefit in project investment etc.；Latter configuration form possesses all advantages of box-beam structure, and the Urban Bridge in the middle or small span in the city (30～60m) more nervous for land used, cost is more expensive, version is comparatively single is comparatively practical.
In order to make full use of existing concrete box girder bridge resource, alleviate traffic flow limited, cancel the diaphragm plate in conventional normal concrete box beam, normal concrete box beam is made double-layer traffic bridge；The sectional dimension of box girder bridge inherently strengthens, and causes that its overall performance, degree of stability and mechanical property will slacken significantly；So that the difficulty of the double-decker bridge of design concrete box girder strengthens further, the present invention proposes a kind of structural strengthening method to double-layer traffic concrete box-beam bridge in this context.
Summary of the invention
For above-mentioned situation, it is an object of the invention to provide a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, namely arranging stiffening ring in double-layer traffic concrete box girder indoor, it can reduce concrete consumption, improves again integral rigidity and the holistic resistant behavior of box beam.
Another purpose of the present invention is in that to provide a kind of implementation based on double-layer traffic concrete box-beam bridge lateral stiffening ring, by, in double-layer traffic concrete box-beam bridge, arranging stiffening ring along span direction one determining deviation, integrality performance of the structure is strengthened；Considering that box girder bridge is in composite force situation, namely the spacing arranging stiffening ring less than effective geometric widths of box girder bridge, should remove the geometric widths of box girder bridge behind the edge of a wing encorbelmented；The technical solution used in the present invention is, in conjunction with double-layer traffic concrete box-beam bridge and frame-generic structure, stiffening ring is carried out dependency structure design, the stiffening ring of different size is set by its stress performance in the end of double-layer traffic concrete box girder and the span direction that keeps at a certain distance away, strengthens the overall performance of box girder bridge.
To achieve these goals, a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it includes end cross stiffening ring, 1/4 span place lateral stiffening ring, span centre lateral stiffening ring and sash rib (2a, 2b, 3a, 3b), sash rib (1a, 1b), inclined stiffener (1c, 2c, 3c), vertical ribbed stiffener (1d, 2d, 3d) with include being connected to form upper and lower two parallel planes by top board, median ventral plate, limit web, base plate, flange plate, support and being provided with the box-shaped beam body of middle chamber, side cavity.
In order to realize present configuration, effect optimization, its further step is:
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its end cross stiffening ring is arranged on the end position of box-shaped beam body, 1/4 span place lateral stiffening ring is arranged on 1/4 span location of box-shaped beam body, and span centre lateral stiffening ring is arranged on the span centre position of box-shaped beam body.
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its end cross stiffening ring includes sash rib (1a), sash rib (1b), inclined stiffener (1c) and vertical ribbed stiffener (1d).
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its 1/4 span place lateral stiffening ring includes sash rib (2a), sash rib (2b), inclined stiffener (2c) and vertical ribbed stiffener (2d).
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its span centre lateral stiffening ring includes sash rib (3a), sash rib (3b), inclined stiffener (3c) and vertical ribbed stiffener (3d).
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is configured with stiffener inside its end cross stiffening ring, 1/4 span place lateral stiffening ring and span centre lateral stiffening ring.
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its end cross stiffening ring, 1/4 span place lateral stiffening ring and span centre lateral stiffening ring build shaping by concrete material.
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its sash rib (2a, 2b, 3a, cross sectional shape 3b) is isosceles trapezoid, sash rib (1a, 1b) is trapezoidal for chamfer, inclined stiffener (1c, 2c, 3c) and vertical ribbed stiffener (1d, 2d, 3d) be rectangle.
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its middle chamber is connected to form through median ventral plate and base plate by the middle part of top board, and side cavity is connected to form through limit web, median ventral plate and top board by base plate；The limit web of box-shaped beam body, median ventral plate have offered several hole.
To achieve these goals, a kind of making based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its step is as follows:
A, material prepare；
Regular reinforcement bottom b, colligation box-shaped beam body, base plate, web；
C, laying box-shaped beam body, base plate template；
D, build underplate concrete；
E, the demoulding, maintenance；
F, colligation web vertical reinforcing bar, web top rebars, roof steel bar；
G, laying box-girder side mould, internal mold, roof plate template；
H, build web, concrete roof；
I, the demoulding, maintenance.
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, adopt and combined by several ribbed stiffeners, sash rib is arranged on box beam top board bottom and base plate bottom, and inclined stiffener is arranged in the web of box beam limit, and vertical ribbed stiffener is arranged in box beam median ventral plate；Stressing conditions and framework design according to box girder bridge are theoretical, respectively the ribbed stiffener of various location in stiffening ring is carried out structural design, configuration ribbed stiffener steel bar stress, meets the force request of whole stiffening ring, thus meeting the technical scheme of the lateral stressed requirement of whole box girder bridge；Overcoming and be becoming tight urban land resource day a few days ago, most built Urban Bridge are blocked up day by day, and build that floor space that wide bridge causes is big and the defect such as involve great expense.
The present invention is produced beneficial effect compared to existing technology:
(I) present invention is used in and arranges stiffening ring in box beam, relative to the conventional box beam arranging diaphragm plate, when ensureing its integrality performance of the structure, improve the space efficiency utilization of box beam abdominal part, achieve the requirement that box beam base plate is current, and saved resource and alleviated the overall weight of box-beam structure.
(II) present invention is used in and arranges stiffening ring in box beam, efficiently solves box beam integral rigidity not enough, strengthens the overall performance of box beam.
(III) present invention is used in and arranges stiffening ring in box beam, its stiffening ring can form with double-layer traffic concrete box girder one-piece casting, and the conventional concrete box girder construction that compares in work progress, decrease the workload building diaphragm plate, reduce the working time.
(IV) present invention is used in and arranges stiffening ring in box beam, and the disturbing of it can effectively reduce top board and base plate causes because span is excessive top board and base plate is spent big, causes a kind of unsafe sensation to people.
(V), the present invention is used in and arranges stiffening ring in box beam, because it is arranged in a determining deviation, improves stress performance, and ensure that its bearing capacity.
The present invention is extensively suitable for the little construction across footpath double-layer traffic bridge in city, is particularly suitable for multilane combined highway and metro and urban light rail, multilevel traffic construction.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the 3 dimensional drawing of double-layer traffic concrete box-beam bridge lateral stiffening ring and box beam.
The cross section function that Fig. 2 is double-layer traffic concrete box-beam bridge arranges schematic diagram.
Fig. 3 is the side view of Fig. 1.
Fig. 4 is the front elevation of Fig. 1.
Fig. 5 is the top view of Fig. 1.
Fig. 6 is C-C profile in Fig. 5.
Fig. 7 is F-F profile in Fig. 4.
Fig. 8 is G-G profile in Fig. 4.
Fig. 9 is that in Fig. 4, G-G section top board and baseplate reinforcing bar arrange schematic diagram.
Figure 10 is that double-layer traffic concrete box-beam bridge roof steel bar arranges schematic diagram.
Figure 11 is that double-layer traffic concrete box-beam bridge baseplate reinforcing bar arranges schematic diagram.
Figure 12 is that F-F section top board in Fig. 4, base plate and web reinforcement arrange schematic diagram.
Figure 13 is H-H profile in Fig. 5.
Figure 14 is double-layer traffic concrete box-beam bridge end cross stiffening ring schematic three dimensional views.
Figure 15 is H1-H1 sectional drawing in Figure 13.
Figure 16 is H2-H2 sectional drawing in Figure 13.
Figure 17 is H3-H3 sectional drawing in Figure 13.
Figure 18 is H4-H4 sectional drawing in Figure 13.
Figure 19 is the steel bar arrangement schematic diagram of sash rib in Figure 13.
Figure 20 is the steel bar arrangement schematic diagram of H1-H1 section in Figure 13.
Figure 21 is the steel bar arrangement schematic diagram of H2-H2 section in Figure 13.
Figure 22 is the steel bar arrangement schematic diagram of inclined stiffener and inclined stiffener in Figure 13..
Figure 23 is the steel bar arrangement schematic diagram of H3-H3 section in Figure 13.
Figure 24 is the steel bar arrangement schematic diagram of H4-H4 section in Figure 13.
Figure 25 is E-E profile in Fig. 5.
Figure 26 is E1-E1 sectional drawing in Figure 25.
Figure 27 is E2-E2 sectional drawing in Figure 25.
Figure 28 is E3-E3 sectional drawing in Figure 25.
Figure 29 is E4-E4 sectional drawing in Figure 25.
Figure 30 is the steel bar arrangement schematic diagram of sash rib in Figure 25.
Figure 31 is the steel bar arrangement schematic diagram of E1-E1 section in Figure 25.
Figure 32 is the steel bar arrangement schematic diagram of E2-E2 section in Figure 25.
Figure 33 is the steel bar arrangement schematic diagram of inclined stiffener and inclined stiffener in Figure 25..
Figure 34 is the steel bar arrangement schematic diagram of E3-E3 section in Figure 25.
Figure 35 is the steel bar arrangement schematic diagram of E4-E4 section in Figure 25.
Figure 36 is D-D profile in Fig. 5.
Figure 37 is D1-D1 sectional drawing in Figure 36.
Figure 38 is D2-D2 sectional drawing in Figure 36.
Figure 39 is D3-D3 sectional drawing in Figure 36.
Figure 40 is D4-D4 sectional drawing in Figure 36.
Figure 41 is the steel bar arrangement schematic diagram of sash rib in Figure 36.
Figure 42 is the steel bar arrangement schematic diagram of D1-D1 section in Figure 36.
Figure 43 is the steel bar arrangement schematic diagram of D2-D2 section in Figure 36.
Figure 44 is the steel bar arrangement schematic diagram of inclined stiffener and inclined stiffener in Figure 36..
Figure 45 is the steel bar arrangement schematic diagram of D3-D3 section in Figure 36.
Figure 46 is the steel bar arrangement schematic diagram of D4-D4 section in Figure 36.
Figure 47 is all kinds of reinforcing bar schematic shapes of double-layer traffic concrete box-beam bridge.
Figure 48 is double-layer traffic concrete box-beam bridge fabrication processing block diagram.
In figure:
The 1a. Box-girder Bridges end horizontal ribbed stiffener of top board；1b. Box-girder Bridges end bottom plate sash rib；1c. Box-girder Bridges end inclined stiffener；The vertical ribbed stiffener in 1d. Box-girder Bridges end；2a. top board 1/4 span place sash rib；2b. base plate 1/4 span place sash rib；2c.1/4 span place inclined stiffener；The vertical ribbed stiffener in 2d.1/4 span place；3a. top board 1/2 span place sash rib；3b. base plate 1/2 span place sash rib；3c.1/2 span place inclined stiffener；The vertical ribbed stiffener in 3d.1/2 span place；4. top board；5. base plate；6. median ventral plate；7. limit web；8. flange plate；9. support；10. hole；11. multifunctional concrete box beam body；12. end cross stiffening ring；13.1/4 span place lateral stiffening ring；14. span centre lateral stiffening ring；1. it is top board and flange plate transverse steel；2. it is top board, flange plate and base plate longitudinal reinforcement；3. it is base plate transverse steel；4. it is the vertical reinforcement of median ventral plate；5. it is the oblique reinforcing bar of limit web；6. it is the genesis analysis reinforcing bar of median ventral plate and limit web；It it is the ribbed stiffener stirrup of sash rib (2a, 2b) in 1/4 span place lateral stiffening ring；For the vertical muscle of the ribbed stiffener of sash rib (1a, 2a, 3a) in end cross stiffening ring, 1/4 span place lateral stiffening ring and span centre lateral stiffening ring；It it is the vertical muscle of the ribbed stiffener of sash rib (2b, 3b) in 1/4 span place lateral stiffening ring and span centre lateral stiffening ring；For the ribbed stiffener stirrup of sash rib (3a, 3b) in span centre lateral stiffening ring；For the ribbed stiffener stirrup of sash rib (1a) in end cross stiffening ring；For the ribbed stiffener stirrup of sash rib (1b) in end cross stiffening ring；For the vertical muscle of the ribbed stiffener of sash rib (1b) in end cross stiffening ring.The oblique reinforcing bar of inclined stiffener (1c, 2c, 3c) in end cross stiffening ring, 1/4 span place lateral stiffening ring and span centre lateral stiffening ring；The ribbed stiffener stirrup of vertical ribbed stiffener (1d, 3d) and inclined stiffener (1c, 3c) in end cross stiffening ring, span centre lateral stiffening ring；The vertical reinforcement of vertical ribbed stiffener (1d, 2d, 3d) in end cross stiffening ring, 1/4 span place lateral stiffening ring and span centre lateral stiffening ring；The ribbed stiffener stirrup of vertical ribbed stiffener (2d) and inclined stiffener (2c) in 1/4 span place lateral stiffening ring.
Detailed description of the invention
In conjunction with accompanying drawing, a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it includes end cross stiffening ring 12,1/4 span place lateral stiffening ring 13, span centre lateral stiffening ring 14 and sash rib (2a, 2b, 3a, 3b), sash rib (1a, 1b), inclined stiffener (1c, 2c, 3c), vertical ribbed stiffener (1d, 2d, 3d) with include being connected to form upper and lower two parallel planes by top board 4, median ventral plate 6, limit web 7, base plate 5, flange plate 8, support 9 and being provided with the box-shaped beam body 11 of middle chamber B, side cavity A.In order to realize present configuration, effect optimization, its further step is: end cross stiffening ring 12 is arranged on the end position of box-shaped beam body 11, described 1/4 span place lateral stiffening ring 13 is arranged on 1/4 span location of box-shaped beam body 11, and span centre lateral stiffening ring 14 is arranged on the span centre position of box-shaped beam body 11.End cross stiffening ring 12 includes sash rib (1a), sash rib (1b), inclined stiffener (1c) and vertical ribbed stiffener (1d).1/4 span place lateral stiffening ring 13 includes sash rib (2a), sash rib (2b), inclined stiffener (2c) and vertical ribbed stiffener (2d).Span centre lateral stiffening ring 14 includes sash rib (3a), sash rib (3b), inclined stiffener (3c) and vertical ribbed stiffener (3d).End cross stiffening ring 12,1/4 span place lateral stiffening ring 13 and span centre lateral stiffening ring 14 inside are configured with stiffener.End cross stiffening ring 12,1/4 span place lateral stiffening ring 13 and span centre lateral stiffening ring 14 build shaping by concrete material.The cross sectional shape of sash rib (2a, 2b, 3a, 3b) is isosceles trapezoid, and sash rib (1a, 1b) is trapezoidal for chamfer, and inclined stiffener (1c, 2c, 3c) and vertical ribbed stiffener (1d, 2d, 3d) are rectangle.Middle chamber B is connected to form through median ventral plate 6 and base plate 5 by the middle part of top board 4, and side cavity A is connected to form with top board 4 through limit web 7, median ventral plate 6 by base plate 5；The limit web 7 of box-shaped beam body 11, median ventral plate 6 have been offered several hole 10.
In conjunction with accompanying drawing, a kind of making based on double-layer traffic concrete box-beam bridge lateral stiffening ring, its step is as follows:
A, material prepare；
Regular reinforcement bottom b, colligation box-shaped beam body, base plate, web；
C, laying box-shaped beam body, base plate template；
D, build underplate concrete；
E, the demoulding, maintenance；
F, colligation web vertical reinforcing bar, web top rebars, roof steel bar；
G, laying box-girder side mould, internal mold, roof plate template；
H, build web, concrete roof；
I, the demoulding, maintenance.
Shown in accompanying drawing, the structure of the present invention and principle: a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, this invention application bridge has been carried out reduced scale by the present embodiment, water and build up test scaled model, test scaled model a series of model investigation and analysis have been carried out, this embodiment illustrates according only to test scaled model, and the invention not representing this patent is confined to the feature of test scaled model, and the embodiment of this embodiment is explained below.
A kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, as shown in Fig. 1 Fig. 8, it is contained among double-layer traffic concrete box girder 11, and the limit web 7 of box-shaped beam body 11, median ventral plate 6 have been offered several hole 10；Box-shaped beam body 11 includes the middle chamber B and side cavity A that are made up of upper and lower two parallel planes and setting top board 4, median ventral plate 6, limit web 7, base plate 5, flange plate 8, support 9；Middle chamber B is connected to form through median ventral plate 6 and base plate 5 by the middle part of top board 4, and described side cavity A is connected to form with top board 4 through limit web 7, median ventral plate 6 by base plate 5.Referring to Fig. 7, Fig. 8, Fig. 7 is F-F profile in Fig. 4, i.e. the generally laterally section of box-shaped beam body 11, and Fig. 8 is G-G profile in Fig. 4, i.e. the horizontal section offering hole 10 of box-shaped beam body 11.
Referring to Fig. 9 Figure 12, arrangement form for the top board 4 of described concrete box girder bridge 11, flange plate 8 and base plate 5 reinforcing bar, 1. top board 4 and the flange plate 8 of Box-girder Bridges 11 are provided with transverse steel, 2. top board 4 and the flange plate 8 of Box-girder Bridges 11 are provided with longitudinal reinforcement, 3. the base plate 5 of Box-girder Bridges 11 is provided with transverse steel, 2. the base plate 5 of Box-girder Bridges 11 is provided with longitudinal reinforcement, 4. the middle pectoral plate 6 of Box-girder Bridges 11 is provided with vertical reinforcement, 5. limit skew web plate 7 is provided with oblique reinforcing bar, and 6. middle pectoral plate 6 and limit skew web plate 7 are provided with genesis analysis reinforcing bar.
Referring to Fig. 5, a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterized in that it belongs to a kind of transverse stiffener of box-shaped beam body 11 and mode, it is divided into end cross stiffening ring 12,1/4 span place lateral stiffening ring 13 and span centre lateral stiffening ring 14, described end cross stiffening ring 12 is arranged on the end position of box-shaped beam body 11, described 1/4 span place lateral stiffening ring 13 is arranged on 1/4 span location of box-shaped beam body 11, and described span centre lateral stiffening ring 14 is arranged on the span centre position of box-shaped beam body 11.
Referring to Figure 47, the schematic shapes of reinforcing bar type used by Box-girder Bridges 11 described in embodiment, 1. reinforcing bar be shaped as linear type, two ends are with crotch, for connecting flange plate 8 and top board 4 transverse steel；2. reinforcing bar be shaped as linear type, two ends are with crotch, for the longitudinal reinforcement of flange plate 8, top board 4 and base plate 5；3. reinforcing bar be shaped as linear type, two ends are with crotch, for the transverse steel of base plate 5；4. two the linear type reinforcing bars that are shaped as of reinforcing bar are arranged symmetrically with, and two ends steel bar end becomes hook to bent intermediate, vertically puts to the vertical reinforcement at middle pectoral plate 6；5. two the linear type reinforcing bars that are shaped as of muscle are arranged symmetrically with, and two ends steel bar end becomes hook to bent intermediate, oblique put to the oblique reinforcing bar at limit skew web plate 7；6. reinforcing bar be shaped as linear type, two ends are with crotch, for longitudinally putting to the genesis analysis reinforcing bar at middle pectoral plate 6 and limit skew web plate 7；Reinforcing bar be shaped as hypotenuse grooved, two ends are with crotch, for putting the ribbed stiffener stirrup to the 1/4 span place sash rib 2b at 1/4 span place sash rib 2a of top board 4 and base plate 5；Reinforcing bar be shaped as linear type, two ends are with crotch, for longitudinally putting the vertical muscle of ribbed stiffener to the span centre place sash rib 3a at Box-girder Bridges 11 end top board 4 sash rib 1a, 1/4 span place sash rib 2a of top board 4 and top board 4；Reinforcing bar be shaped as linear type, two ends are with crotch, for longitudinally putting the vertical muscle of ribbed stiffener to the span centre place sash rib 3b at 1/4 span place sash rib 2b of top board 4 and top board 4；Reinforcing bar be shaped as hypotenuse grooved, two ends are with crotch, for longitudinally putting the ribbed stiffener stirrup to the span centre place sash rib 3b at the span centre place sash rib 3a of top board 4 and base plate 5；The grooved being shaped as on one side directly limit hypotenuse on one side of reinforcing bar, for putting to the ribbed stiffener stirrup at Box-girder Bridges 11 top board 4 end horizontal ribbed stiffener 1a place；The grooved being shaped as on one side directly limit hypotenuse on one side of reinforcing bar, for putting the ribbed stiffener stirrup to the sash rib 1b place in Box-girder Bridges 11 base plate 5 end；Reinforcing bar be shaped as linear type, two ends are with crotch, for putting to the vertical muscle of the ribbed stiffener at Box-girder Bridges 11 base plate 5 end horizontal ribbed stiffener 1b place；Reinforcing bar be shaped as two linear types, reinforcing bar is arranged symmetrically with, and two ends steel bar end becomes hook to bent intermediate, vertically puts the vertical reinforcement to vertical ribbed stiffener 1d, 2d, 3d；Reinforcing bar be shaped as square type, for the ribbed stiffener stirrup of vertical in end cross stiffening ring 12, span centre lateral stiffening ring 14 ribbed stiffener 1d, 3d and inclined stiffener 1c, 3c；Reinforcing bar be shaped as square type, be the ribbed stiffener stirrup of vertical ribbed stiffener 2d and inclined stiffener 2c in 1/4 span place lateral stiffening ring 13.
Embodiment one: a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, as shown in Figure 13-Figure 24, it is contained among double-layer traffic concrete box girder 11, it is arranged on the end position of box-shaped beam body 11, for end cross stiffening ring 12, described end cross stiffening ring 12 includes sash rib 1a, sash rib 1b, inclined stiffener 1c and vertical ribbed stiffener 1d.
Referring to Figure 13, Figure 14, Figure 13 is H-H profile in Fig. 5, is the schematic cross-section of the end position of box-shaped beam body 11, and Figure 14 is the end schematic perspective view of box-shaped beam body 11；End position in box-shaped beam body 11 arranges end cross stiffening ring 12；Referring to the H1 H1 sectional view that Figure 15 Figure 18, Figure 15 are in Figure 13, being the cross section of the sash rib 1a of end cross stiffening ring 12, the cross sectional shape of sash rib 1a is that chamfer is trapezoidal；Figure 16 is the H2 H2 sectional view in Figure 13, is the cross section of the sash rib 1b of end cross stiffening ring 12, and the cross sectional shape of sash rib 1b is that chamfer is trapezoidal；H3 H3 in Figure 17 Figure 18 respectively Figure 13, H4 H4 sectional view, Figure 17 is the schematic cross-section of the inclined stiffener 1c of end cross stiffening ring 12, and Figure 18 is the schematic cross-section of the vertical ribbed stiffener 1d of end cross stiffening ring 12, and cross sectional shape is rectangle.
As shown in Figure 19 Figure 24, for the arrangement form of reinforcing bar in the end cross stiffening ring 12 of described Box-girder Bridges 11；Referring to Figure 19 Figure 21, for the cross section reinforcing bar arrangement form of sash rib 1a, sash rib 1b in end cross stiffening ring 12, in described end cross stiffening ring 12 sash rib 1a be provided with transverse steel 1., longitudinal reinforcement 2., the ribbed stiffener stirrup of sash rib 1aThe ribbed stiffener of sash rib 1a indulges muscleDescribed sash rib 1b be provided with transverse steel 3., longitudinal reinforcement 2., the ribbed stiffener stirrup of sash rib 1bThe ribbed stiffener of sash rib 1b indulges muscleReferring to Figure 22 Figure 24, for the cross section reinforcing bar arrangement form of inclined stiffener 1c, vertical ribbed stiffener 1d in end cross stiffening ring 12, in described end cross stiffening ring 12, inclined stiffener 1c is provided with oblique reinforcing barRibbed stiffener stirrupIn described end cross stiffening ring 12, vertical ribbed stiffener 1d is provided with vertical reinforcementRibbed stiffener stirrup
Embodiment two: a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, as shown in Figure 25-Figure 35, it is contained among double-layer traffic concrete box girder 11, it is arranged on 1/4 span location of box-shaped beam body 11, being 1/4 span place lateral stiffening ring 13, described 1/4 span place lateral stiffening ring 13 includes sash rib 2a, sash rib 2b, inclined stiffener 2c and vertical ribbed stiffener 2d.
Being E-E profile in Fig. 5 referring to Figure 25 Figure 29, Figure 25, be the schematic cross-section of 1/4 span location of box-shaped beam body 11,1/4 span location in box-shaped beam body 11 arranges 1/4 span place lateral stiffening ring 13；Referring to the E1-E1 sectional view that Figure 26 Figure 29, Figure 26 are in Figure 25, being the cross section of the sash rib 2a of 1/4 span place lateral stiffening ring 13, the cross sectional shape of sash rib 2a is isosceles trapezoid；Figure 27 is the E2-E2 sectional view in Figure 25, is the cross section of the sash rib 2b of 1/4 span place lateral stiffening ring 13, and the cross sectional shape of sash rib 2b is isosceles trapezoid；E3-E3, E3-E3 sectional view in Figure 28 Figure 29 respectively Figure 25, Figure 28 is the schematic cross-section of the inclined stiffener 2c of 1/4 span place lateral stiffening ring 13, Figure 29 is the schematic cross-section of the vertical ribbed stiffener 2d of 1/4 span place lateral stiffening ring 13, and cross sectional shape is rectangle.
As shown in Figure 30 Figure 35, for the arrangement form of reinforcing bar in 1/4 span place lateral stiffening ring 13 of described Box-girder Bridges 11；Referring to Figure 30 Figure 32, be the cross section reinforcing bar arrangement form of sash rib 2a, sash rib 2b in 1/4 span place lateral stiffening ring 13, in described 1/4 span place lateral stiffening ring 13 sash rib 2a be provided with transverse steel 1., longitudinal reinforcement 2., the ribbed stiffener stirrup of sash rib 2aThe ribbed stiffener of sash rib 2a indulges muscleDescribed sash rib 2b be provided with transverse steel 3., longitudinal reinforcement 2., the ribbed stiffener stirrup of sash rib 2bThe ribbed stiffener of sash rib 2b indulges muscleReferring to Figure 33 Figure 35, being the cross section reinforcing bar arrangement form of inclined stiffener 2c, vertical ribbed stiffener 2d in 1/4 span place lateral stiffening ring 13, in described 1/4 span place lateral stiffening ring 13, inclined stiffener 2c is provided with oblique reinforcing barRibbed stiffener stirrupIn described 1/4 span place lateral stiffening ring 13, vertical ribbed stiffener 2d is provided with vertical reinforcementRibbed stiffener stirrup
Embodiment three: a kind of based on double-layer traffic concrete box-beam bridge lateral stiffening ring, as shown in Figure 36-Figure 46, it is contained among double-layer traffic concrete box girder 11, it is arranged on the span centre position of box-shaped beam body 11, for span centre lateral stiffening ring 14, described span centre lateral stiffening ring 14 includes sash rib 3a, sash rib 3b, inclined stiffener 3c and vertical ribbed stiffener 3d.
It is D-D profile in Fig. 5 referring to Figure 36 Figure 40, Figure 36, is the schematic cross-section of the span centre position of box-shaped beam body 11, span centre lateral stiffening ring 14 is set in the span centre position of box-shaped beam body 11；Referring to the D1-D1 sectional view that Figure 37 Figure 40, Figure 37 are in Figure 36, being the cross section of the sash rib 3a of span centre lateral stiffening ring 14, the cross sectional shape of sash rib 3a is isosceles trapezoid；Figure 37 is the D2-D2 sectional view in Figure 36, is the cross section of the sash rib 3b of span centre lateral stiffening ring 14, and the cross sectional shape of sash rib 3b is isosceles trapezoid；D3-D3, D3-D3 sectional view in Figure 39 Figure 40 respectively Figure 36, Figure 39 is the schematic cross-section of the inclined stiffener 3c of span centre lateral stiffening ring 14, and Figure 40 is the schematic cross-section of the vertical ribbed stiffener 3d of span centre lateral stiffening ring 14, and cross sectional shape is rectangle.
As shown in Figure 41 Figure 46, for the arrangement form of reinforcing bar in the span centre lateral stiffening ring 14 of described Box-girder Bridges 11；Referring to Figure 41 Figure 43, for the cross section reinforcing bar arrangement form of sash rib 3a, sash rib 3b in span centre lateral stiffening ring 14, in described span centre lateral stiffening ring 14 sash rib 3a be provided with transverse steel 1., longitudinal reinforcement 2., the ribbed stiffener stirrup of sash rib 3aThe ribbed stiffener of sash rib 3a indulges muscleDescribed sash rib 3b be provided with transverse steel 3., longitudinal reinforcement 2., the ribbed stiffener stirrup of sash rib 3bThe ribbed stiffener of sash rib 3b indulges muscleReferring to Figure 44 Figure 46, for the cross section reinforcing bar arrangement form of inclined stiffener 3c, vertical ribbed stiffener 3d in span centre lateral stiffening ring 14, in described span centre lateral stiffening ring 14, inclined stiffener 3c is provided with oblique reinforcing barRibbed stiffener stirrupIn described span centre lateral stiffening ring 14, vertical ribbed stiffener 3d is provided with vertical reinforcementRibbed stiffener stirrup
The implementation process general thought of stiffening ring is, first it is the relevant size according to existing box beam and requirement, each ribbed stiffener is carried out Reinforcement Design, then the reinforcing bar that each ribbed stiffener is matched is connected with the associated components of box beam, the upper following sash rib reinforcement of such as stiffening ring is connected with the transverse plate muscle of roof and floor, the vertical ribbed stiffener reinforcing bar of the right and left is connected with plate muscle in web, each ribbed stiffener junction joint reinforcing bar inlay and with the anchoring of girder；Make main body one entirety of formation of whole stiffening ring and box beam, end stiffening ring the two ends of box beam main body tightly around, and each stiffening ring of span centre portion surrounds the waist segmentation of box beam main body, add the globality of box beam, improve the holistic resistant behavior of box beam, and instead of diaphragm plate, decrease concrete application, save resource, improve the space utilization of chamber, it is achieved box beam base plate traffic has been passed through.
Claims (10)
1. one kind based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterized in that including end cross stiffening ring (12), 1/4 span place lateral stiffening ring (13), span centre lateral stiffening ring (14) and sash rib (2a, 2b, 3a, 3b), sash rib (1a, 1b), inclined stiffener (1c, 2c, 3c), vertical ribbed stiffener (1d, 2d, 3d) with include by top board (4), median ventral plate (6), limit web (7), base plate (5), flange plate (8), support (9) connects to form upper and lower two parallel planes and is provided with middle chamber (B), the box-shaped beam body (11) of side cavity (A).
2. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterized in that described end cross stiffening ring (12) is arranged on the end position of box-shaped beam body (11), described 1/4 span place lateral stiffening ring (13) is arranged on 1/4 span location of box-shaped beam body (11), and described span centre lateral stiffening ring (14) is arranged on the span centre position of box-shaped beam body (11).
3. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterised in that described end cross stiffening ring (12) includes sash rib (1a), sash rib (1b), inclined stiffener (1c) and vertical ribbed stiffener (1d).
4. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterised in that described 1/4 span place lateral stiffening ring (13) includes sash rib (2a), sash rib (2b), inclined stiffener (2c) and vertical ribbed stiffener (2d).
5. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterised in that described span centre lateral stiffening ring (14) includes sash rib (3a), sash rib (3b), inclined stiffener (3c) and vertical ribbed stiffener (3d).
6. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterised in that described end cross stiffening ring (12), 1/4 span place lateral stiffening ring (13) and span centre lateral stiffening ring (14) are internal is configured with stiffener.
7. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterised in that described end cross stiffening ring (12), 1/4 span place lateral stiffening ring (13) and span centre lateral stiffening ring (14) build shaping by concrete material.
8. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterized in that described sash rib (2a, 2b, 3a, cross sectional shape 3b) is isosceles trapezoid, described sash rib (1a, 1b) is trapezoidal for chamfer, described inclined stiffener (1c, 2c, 3c) and vertical ribbed stiffener (1d, 2d, 3d) be rectangle.
9. one according to claim 1 is based on double-layer traffic concrete box-beam bridge lateral stiffening ring, it is characterized in that described middle chamber (B) is connected to form through median ventral plate (6) and base plate (5) by top board (4) middle part, described side cavity (A) is connected to form with top board (4) through limit web (7), median ventral plate (6) by base plate (5)；The limit web (7) of described box-shaped beam body (11), median ventral plate (6) have offered several hole (10).
10., based on a making for double-layer traffic concrete box-beam bridge lateral stiffening ring, its step is as follows:
A, material prepare；
Regular reinforcement bottom b, colligation box-shaped beam body, base plate, web；
C, laying box-shaped beam body, base plate template；
D, build underplate concrete；
E, the demoulding, maintenance；
F, colligation web vertical reinforcing bar, web top rebars, roof steel bar；
G, laying box-girder side mould, internal mold, roof plate template；
H, build web, concrete roof；
I, the demoulding, maintenance.
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