CN105735101B - A kind of high-speed railway repairing beam and its emergency repair method that can be exchanged into permanent bridge structure - Google Patents
A kind of high-speed railway repairing beam and its emergency repair method that can be exchanged into permanent bridge structure Download PDFInfo
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- CN105735101B CN105735101B CN201610308330.6A CN201610308330A CN105735101B CN 105735101 B CN105735101 B CN 105735101B CN 201610308330 A CN201610308330 A CN 201610308330A CN 105735101 B CN105735101 B CN 105735101B
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
Abstract
Beam and its emergency repair method are rushed to repair the invention discloses a kind of high-speed railway that can be exchanged into permanent bridge structure, repairing beam is made up of in the state that is temporarily open to traffic the separate single line of line up and down repairing beam, single line repairing beam uses the structure type of steel box girder with prestressed tendons, the segmented manufacture of steel box-girder, using the connected mode of steel pin shear connector between sections, steel box-girder lower wing plate top, web disposed inboard have longitudinal external prestressing reinforcing bar.By the casting concrete structure sheaf above steel box-girder, arrangement and tensioning transversely prestressed bars between upper and lower line single line repairing beam can make repairing beam form the whole hole prestress steel concrete combination beam of two-wire, as permanent bridge structure normal operation.It is characterized in the speed that is open to traffic high that the present invention is different from existing emergency steel girder, and the beam structure for interim repairing is no longer removed, but the conversion for passing through structural system, interim repairing beam is changed into permanent bridge structure, frame is changed to damage the secondary of bridge so as to avoid.
Description
Technical field
The present invention relates to a kind of high-speed railway bridge rush repair equipment and its emergency repair method, in more particularly to a kind of high-speed railway
Etc. span simply supported girder bridge beam structure rush repair equipment, belong to bridge rush-repair technical field.
Background technology
In high-speed railway, the line is busy that road total kilometrage ratio is very high for bridge mileage.Although the design of high-speed rail bridge, construction standard are very
Height, but in view of its huge quantity size and extensive Regional Distribution, the Potential feasibility that disaster loss occurs is comparing high.Mesh
The preceding equipment deposit do not rushed to repair specifically designed for high-speed rail bridge still both at home and abroad, existing beam portion rush repair equipment is directed to common railway bridge
Beam repairing is developed, and including type-64 military beam, eight or seven formula railway recovery girder steels and reassembling type crossbeam etc., these beam portions are robbed
Repair equipment and all have the shortcomings that to be open to traffic that speed is slow, needs are secondary changes frame, its technology tactics performance indications can not meet high-speed rail bridge
The need for repairing.Operation has been put into, the high-speed rail bridge of enormous amount does not have damage repair technology to support after facing damage, no repairing
The awkward situation of equipment deposit.Therefore, it is urgent to study a kind of beam portion repairing structure for adapting to high-speed rail bridge repairing, and with weight
The economic implications and social benefit wanted.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of adapt to high-speed railway bridge repairing needs repairing beam and
Its emergency repair method, its in the state that is temporarily open to traffic with the speed that is open to traffic higher, can not interrupt be open to traffic in the case of be converted to
Permanent bridge structure, it is to avoid frame is changed to impaired bridge secondary.
To solve the above problems, the technical solution used in the present invention is：
A kind of high-speed railway that can be exchanged into permanent bridge structure rushes to repair beam, and its key technology is：It includes connecting bridge
Across I-beam and the single line steel box-girder that is separately positioned on the I-beam left and right sides and is connected with I-beam, the bridge pier pad
By temporary support setting bracket cushion beam on stone, the two ends of the I-beam and single line steel box-girder are seated the bracket cushion beam
On, the single line steel box-girder is spliced by multiple box girder segments, and the single line steel box-girder upper surface passes through multiple I-steel pads
Beam is provided with fragment-free track slab, and the single line steel box-girder outside is provided with top flange cantilevered plate, hookup wire on the cantilevered plate of top flange
Cable groove and steel column for contacting net.
Further, the upper flange both sides of described I-beam are provided with riser, be provided with the single line steel box-girder with
The hook that the riser is adapted, single line steel box-girder is mounted on the I-beam by the assembled hook of the box girder segment and riser
On.
Further, connected by steel pin-shear connector between the box girder segment of the single line steel box-girder, the box girder segment
Upper and lower wing plate be provided with wing plate horizontal-associate otic placode, be provided with steel pin between wing plate horizontal-associate otic placode, the web of box girder segment is by cutting
Power is bonded and connects.
Further, the single line steel box-girder includes two 6.3m box girder segments, two 8m box girder segments and a 4m casees
Girder segment, its order of connection is：6.3m box girder segments, 8m box girder segments, 4m box girder segments, 8m box girder segments and 6.3m box beam sections
Section is linked in sequence.
Further, external prestressing steels, described single line steel box-girder diaphragm plate or so are provided with the single line steel box-girder
Both sides and bottom are provided with multiple longitudinal direction external prestressing ducts, and the external prestressing steels include external by the longitudinal direction
Web external prestressing steels and base plate external prestressing steels that prestressed pore passage is set.
Further, when permanent bridge structure is converted to, the upper flange and fragment-free track slab of the single line steel box-girder it
Between poured concrete, the I-shaped top surface of the beam casting concrete structure sheaf, the concrete layer and both sides list of I-beam
Post-cast strip is reserved between the concrete layer of line steel box-girder.
Further, it is provided between two single line steel box-girders and laterally strengthens coupling arrangement, it is described laterally to strengthen connection
Connection device includes the two-wire beam bridging horizontal-associate being arranged between two single line steel box-girders, and the two-wire beam bridging horizontal-associate is every 4m
Set together, position of opening of the two-wire beam bridging horizontal-associate through the web of I-beam.
Further, being filled with the post-cast strip is used for the concrete layer of the I-beam and both sides single line steel box-girder
Concrete layer connect integral rapid hardening support grouting material.
Further, the coupling arrangement of laterally strengthening includes that many transverse directions being arranged between two single line steel box-girders in advance should
Power muscle, the single line steel box-girder upper and lower part is respectively arranged with transversely prestressed bars anchorage, and the transversely prestressed bars lead to
The transversely prestressed bars anchorage is crossed to be fixedly connected.
A kind of emergency repair method of above-mentioned repairing beam is also provided in addition, it specifically includes following steps：
One, sets temporary support on bridge pier pinner, and bracket cushion beam is set on temporary support；
Two, lifting I-beam connection spannings, the two ends of the I-beam are supported by the bracket cushion beam；
Three, symmetrically lift box girder segment in the I-beam both sides, and box girder segment is mounted on I-beam, then by box beam
Sections is drawn to design attitude in place successively, then connects adjacent box girder segment and forms single line steel box-girder；
Four, set fragment-free track slab in the upper surface support of the single line steel box-girder, and in single line steel box-girder and without tiny fragments of stone, coal, etc. rail
Guidance tape reserves the casting space of concrete when being converted into permanent beam；
Five, install top flange cantilevered plate on the outside of single line steel box-girder, on the top flange cantilevered plate install cable trough and
Steel column for contacting net；
Six, arrange and tensioning longitudinal direction external prestressing steels that improve affiliated facility, adjustable track is linear in single line steel box-girder
And recover gapless track, and circuit is opened, realization is open to traffic temporarily.
The Program for structural Transformation step for being converted into permanent bridge is as follows：
The circuit of seven, temporary closures sides, coagulation is poured between the side single line steel box-girder upper flange and fragment-free track slab
Soil structure layer；
Eight, after above-mentioned concrete reaches intensity requirement, in the side single line steel box-girder web disposed inboard web
External prestressing steels and and apply prestressing force；
The stress level of the base plate external prestressing steels above nine, adjustment lower wing plates, the repairing beam on the side line road is changed
Into pre-stress steel-concrete combining structure, this side line road is opened；
The circuit of ten, temporary closure opposite sides, equally carries out the conversion of structural system to it according to the method described above, extensive afterwards
Multiple two-wire is open to traffic；
11, are in middle I-shaped top surface of the beam also casting concrete structure sheaf, the concrete layer and both sides single line of I-beam
Post-cast strip is reserved between the concrete layer of steel box-girder；
12, are linked into an integrated entity the upper lower wing plate of I-beam with the upper lower wing plate of both sides single line steel box-girder using bolt；
13, install two-wire beam bridging horizontal-associate between the single line steel box-girder of both sides, and horizontal-associate is set together every 4 m,
Position of opening of the two-wire beam bridging horizontal-associate through the honeycomb fashion web of I-beam；
Rapid hardening is filled on the post-cast strip that 14, are reserved between the concrete layer of I-beam and both sides repairing beam concrete layer
Support grouting material, the concrete layer connection of the concrete layer of the I-beam and both sides single line steel box-girder is integral；
15, install transversely prestressed bars between the single line steel box-girder of both sides, each 1 near lower wing plate on 4 m sections
Root, tensioning is simultaneously fixed on transversely prestressed bars anchorage, and the I-beam of the single line steel box-girder of both sides and centre is connected,
Form the whole hole Prestressed steel-concrete composite beam permanent bridge structure of two-wire；
16, install permanent bearing, remove temporary support, and circuit resumes normal operation.
It is using the beneficial effect produced by above-mentioned technical proposal：
The present invention is no longer removed for the beam structure of interim repairing, but the conversion for passing through structural system, will rob temporarily
Repair beam and be changed into permanent bridge structure, frame is changed to damage the secondary of bridge so as to avoid；During Program for structural Transformation, iron wire high
Road remains to maintain single line to be open to traffic；Repairing beam of the invention has the speed that is open to traffic higher, and the repairing state speed that is open to traffic temporarily exists
More than 100km/h, normal operation state is open to traffic speed in more than 250km/h.
Repairing beam is made up of in the state that is temporarily open to traffic the separate single line of line up and down repairing beam, and single line repairing beam is used
The structure type of steel box girder with prestressed tendons, the segmented manufacture of steel box-girder, storage and transport, by increasing and decreasing box girder segment quantity, can be with
Adapt to the repairing needs of different spans bridge.
Using the connected mode of steel pin-shear connector between steel box girder segment, connected using otic placode-steel pin between steel box-girder wing plate
Connect, connected using shear connector between web, steel box-girder lower wing plate top, web disposed inboard have external prestressing reinforcing bar.Make repairing
Beam turns into prestressed steel structure, is effectively improved the scene spelling frame speed for rushing to repair beam, improves the vertical firm of interim repairing beam
Degree and lateral stiffness, the interim speed that is open to traffic can be significantly improved than common railway emergency steel girder.
By the casting concrete structure sheaf above steel box-girder, arrangement and tensioning transverse direction between up-downgoing single line repairing beam
Presstressed reinforcing steel, can make repairing beam form the whole hole Prestressed steel-concrete composite beam of two-wire, normally be transported as permanent bridge structure
Battalion, makes its mechanical property reach the level suitable with original bridge, it is to avoid change frame to impaired the secondary of bridge.
The present invention can be also used for the repairing operation of existing common railway bridge, and its comprehensive technical performance index, economy refer to
Mark is better than existing emergency steel girder.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the interim state single line repairing beam-ends facade structures schematic diagram that is open to traffic of the invention.
Fig. 2 is section structural representation in the interim state single line repairing girder span that is open to traffic of the invention.
Fig. 3 is the interim vertical facade structures schematic diagram of state single line repairing beam half that is open to traffic of the invention.
Fig. 4 is the interim state single line repairing vertical section structure schematic diagram of beam half that is open to traffic of the invention.
Fig. 5 is the interim state two-wire repairing beam-ends facade structures schematic diagram that is open to traffic of the invention.
Fig. 6 is attachment structure schematic diagram between present invention repairing girder segment.
Fig. 7 is structural I-beam schematic diagram of the present invention.
Fig. 8 is the permanent operation state repairing vertical section structure schematic diagram of beam half of the present invention.
Fig. 9 is the permanent operation state two-wire repairing beam-ends facade structures schematic diagram of the present invention.
Figure 10 is section structural representation in the permanent operation state two-wire repairing girder span of the present invention.
Wherein：1 single line steel box-girder, 2 top flange cantilevered plates, 3 fragment-free track slabs, 4 I-steel bearing beams, 5 bracket cushion beams, 6 are faced
When bearing, 7 I-beams, 8 concretes, 9 two-wire beam bridging horizontal-associates, 10 transversely prestressed bars, 11 6.3m box beam sections
Section, 12 8m box girder segments, 13 4m box girder segments, 20 permanent bearings, 71 risers, 81 concrete post-cast strips, 111 longitudinal directions
External prestressing duct, 112 transversely prestressed bars anchorages, 113 hooks, 114 steel pins, 115 shear connectors, 116 webs are pre- in vitro
Stress rib, 117 base plate external prestressing steels, 118 wing plate connection otic placodes, 119 horizontal-associate connection otic placodes.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings with specific embodiment to hair
It is bright to carry out clear, complete description.
A kind of high-speed railway repairing beam that can be exchanged into permanent bridge structure as Figure 1-10 shows, it includes connecting spanning
I-beam 7 and be separately positioned on the left and right sides of the I-beam 7 and the single line steel box-girder 1 being connected with I-beam 7, the bridge pier
By the setting bracket cushion beam 5 of temporary support 6 on pinner, the two ends of the I-beam 7 and single line steel box-girder 1 are seated the bearing
On bearing beam 5, the single line steel box-girder 1 is spliced by multiple box girder segments, and the upper surface of single line steel box-girder 1 passes through multiple works
Word steel bearing beam 4 is provided with fragment-free track slab 3, and multiple I-steel bearing beams 4 make to be reserved between fragment-free track slab 3 and single line steel box-girder 1
Go out to be converted into the casting space of concrete during permanent beam.The I-steel bearing beam 4 is four.The left side of fragment-free track slab 3
Two each with right side.The outside of the single line steel box-girder 1 is provided with top flange cantilevered plate 2, top flange cantilevered plate 2 and single line steel box-girder
1 is bolted, and cable trough and steel column for contacting net are installed on cantilevered plate.Base plate is provided with the base plate of single line steel box-girder 1
External prestressing steels 117, now the single line steel box-girder 1 of I-beam both sides is separate, can realize that interim operation is open to traffic.
As shown in fig. 7, the upper flange both sides of described I-beam 7 are provided with riser 71, set on the single line steel box-girder 1
There is the hook 113 being adapted with the riser 71, single line steel box-girder 1 is by the box girder segment assembled hook 113 and riser 71
It is mounted on the I-beam 7.Box beam riser where hook 113 is bolted with the riser 71 on the I-beam 7.
As shown in Fig. 3, Fig. 4 and Fig. 6, connected by steel pin-shear connector between the box girder segment of the single line steel box-girder 1,
The upper and lower wing plate of the box girder segment is provided with wing plate connection otic placode 118, and steel pin is provided between wing plate connection otic placode 118
114, the wing plate of box girder segment is connected by shear connector 115.
As shown in Figure 3 and Figure 4, the single line steel box-girder 1 includes two 6.3m box girder segments 11, two 8m box girder segments 12 and
4m box girder segments 13, its order of connection is：6.3m box girder segments 11,8m box girder segments 12,4m box girder segments 13,8m box girder segments
12 and 6.3m box girder segments 11 are linked in sequence.Above-mentioned single line steel box-girder 1 be applied to 32 meters across bridge rush-repair, on this basis,
By reducing by 1 8m box girder segment, the repairing of 24m span bridges is adapted to, by reducing by 1 middle part 8m box girder segment and 1
Individual middle 4m box girder segments, are adapted to the repairing of 20m span bridges.
When the repairing beam of above-mentioned temporary traffic is converted into permanent bridge structure, add in the web of single line steel box-girder 1
If web external prestressing steels 116, the casting concrete structure sheaf 8 between repairing beam upper flange and track plates 3, in I-steel 7
Upper flange on casting concrete structure sheaf 8, and concrete post-cast strip is left in its both sides, then in two lists
It is provided between line steel box-girder 1 and laterally strengthens coupling arrangement.Then being filled with post-cast strip 81 is used for the I-beam 7
The concrete layer of concrete layer and both sides single lines steel box-girder 1 connects integral rapid hardening support grouting material.
As depicted in figs. 1 and 2, the diaphragm plate left and right sides of the single line steel box-girder 1 and bottom are provided with multiple longitudinal bodies
External prestressed duct 111, as shown in figure 8, the web external prestressing steels 116 and base plate external prestressing steels 117 pass through institute
Longitudinal external prestressing duct 111 is stated to be arranged in the web of single line steel box-girder 1 and on base plate.
Such as Fig. 9 and Figure 10, repairing beam is being converted in permanent bridge structure, it is necessary to laterally strengthen coupling arrangement described
Including the two-wire beam bridging horizontal-associate 9 being arranged between two single line steel box-girders 1, the upper and lower part of single line steel box-girder 1 difference
Be provided with horizontal-associate connection otic placode 119, the end of two-wire beam bridging horizontal-associate 9 by the horizontal-associate connection otic placode 119 with it is described
Single line steel box-girder 1 is fixedly connected.The two-wire beam bridging horizontal-associate 9 is set together every 4m, and two-wire beam bridging horizontal-associate 9 is passed through
The position of opening of the web of I-beam 7.
As shown in Figure 9 and Figure 10, the coupling arrangement of laterally strengthening includes many be arranged between two single line steel box-girders 1
Transversely prestressed bars 10.Such as Fig. 1 and Fig. 2, the upper and lower part of single line steel box-girder 1 is respectively arranged with transversely prestressed bars anchoring
Seat 112, the transversely prestressed bars 10 are fixedly connected by the transversely prestressed bars anchorage 112.
Specific first-aid repair construction mode of the invention is as follows：
Such as accompanying drawing 3-4, the single line steel box-girder 1 point 5 sections manufactures, storage, transports are assembled into after transporting repairing scene to
Bridge, 5 box girder segments are respectively 2 end 6.3m 11,2 middle part 8m 12,1 middle 4m box beam sections of box girder segment of box girder segment
Section 13.By reducing by 1 8m box girder segment, the repairing of 24m span bridges is adapted to, by reducing by 1 middle part 8m box beam section
Section and 1 middle 4m box girder segment, are adapted to the repairing of 20m span bridges.The present embodiment is by 32 meters as a example by beam is rushed to repair.
Temporary support 6 is set on bridge pier pinner, bracket cushion beam 5 is set on temporary support 6；Lifting I-beam 7 is connected
Spanning, the two ends of the I-beam 7 are supported by the bracket cushion beam 5；The effect of I-beam 7 is the erection of auxiliary repairing beam,
The single line repairing beam of its upper flange and both sides is bolted when permanent bridge structure is converted into, the upper flange two of I-beam 7
Set up plate 71 in side.
After the installation of I-beam 7,6.3m box girder segments 11 are symmetrically lifted in the both sides of I-beam 7, spelled using box girder segment
Dress hook 113 is hung on the riser 71 of the upper flange both sides of I-beam 7, and 6.3m box girder segments 11 then are drawn into opposite side bridge pier
In place.After end carriage section is in place, lifted successively with same method, pull 8m box girder segments 12,4m box girder segments 13,8m box beam sections
Section 12 is in place and installs connection steel pin, finally lifts end 6.3m box girder segment 11 and installs connection steel pin, connects each box beam
Sections, forms single line steel box-girder 1.The connected mode of the intersegmental use steel pin-shear connector of single line steel box girder section, adjacent segment beam
Upper lower wing plate connected by otic placode and steel pin 114, web is connected by shear connector 115.
Fragment-free track slab 3 is set in the upper surface support of the single line steel box-girder 1,4 I-steel are installed on steel box-girder
Beam 4, for supporting fragment-free track slab 3, and reserves when being converted into permanent beam between single line steel box-girder 1 and fragment-free track slab 3
The casting space of concrete.
Top flange cantilevered plate 2 is installed in the outside of single line steel box-girder 1, installed on the top flange cantilevered plate 2 cable trough and
Steel column for contacting net.
Arrangement and tensioning external prestressing steels on single line steel box-girder 1, the external prestressing steels are included by described vertical
To the base plate external prestressing steels 117 that external prestressing duct 111 is set, affiliated facility is improved, adjustable track is linear and recovers
Gapless track, opens circuit, and realization is open to traffic temporarily.
Such as accompanying drawing 8-10, high ferro repairing beam of the invention, can be by the conversion of structural system on Functional Design, formation
Permanent bridge girder construction.
The step of Program for structural Transformation, is as follows：The circuit of temporary closure side, between repairing beam upper flange and track plates 3
Casting concrete structure sheaf 8, after it reaches intensity requirement, web disposed inboard web presstressed reinforcing steel 116 and and apply in advance
Stress, the stress level of the base plate external prestressing steels 117 above adjustment lower wing plate, the repairing beam of side circuit is converted into pre-
Stress steel-concrete combined structure, opens this side line road.
The circuit of opposite side is subsequently temporarily closed, the conversion of structural system is equally carried out to it, two-wire recovered afterwards and is open to traffic,
Select a good opportunity simultaneously in the middle top surface of I-beam 7 also casting concrete structure sheaf 8.
The repairing beam of line up and down now is separate, does not have strong lateral ties, in order to strengthen permanent bridge structure
Lateral stiffness, the upper lower wing plate of lower wing plate on I-beam and both sides repairing beam is linked into an integrated entity using bolt, in both sides
Two-wire beam bridging horizontal-associate 9 is installed, horizontal-associate is set together every 4 m, and two-wire beam bridging horizontal-associate 9 passes through I-beam between repairing beam
The position of opening of 7 honeycomb fashion web.
Rapid hardening branch is filled on the post-cast strip 81 reserved between the concrete layer of I-beam 7 and both sides repairing beam concrete layer
Seat grouting material, transversely prestressed bars 10, each 1, tensioning near lower wing plate on 4 m sections are installed between both sides repairing beam
And be fixed on transversely prestressed bars anchorage 112, the repairing beam of both sides, middle I-beam are connected, form two-wire
Whole hole Prestressed steel-concrete composite beam permanent bridge structure.Permanent bearing 20 is finally installed, temporary support 6 is removed, circuit is extensive
Multiple normal operation.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic；And
These modifications are replaced, and do not make the spirit and model of the essence disengaging embodiment of the present invention technical scheme of appropriate technical solution
Enclose.
Claims (2)
1. a kind of high-speed railway that can be exchanged into permanent bridge structure rushes to repair the emergency repair method of beam, it is characterised in that：It is specifically wrapped
Include following steps：
One, sets temporary support on bridge pier pinner（6）, in temporary support（6）Upper setting bracket cushion beam（5）；
Two, lift I-beam（7）Connection spanning, the I-beam（7）Two ends pass through the bracket cushion beam（5）Support；
Three, are in the I-beam（7）Both sides symmetrically lift box girder segment, and box girder segment is mounted on I-beam（7）On, then by case
Girder segment is drawn to design attitude in place successively, then connects adjacent box girder segment and forms single line steel box-girder（1）；
Four, are in the single line steel box-girder（1）Upper surface support set fragment-free track slab（3）, and in single line steel box-girder（1）And nothing
Tiny fragments of stone, coal, etc. track plates（3）Reserve the casting space of concrete when being converted into permanent beam；
Five, are in single line steel box-girder（1）Outside is installed by top flange cantilevered plate（2）, in the top flange cantilevered plate（2）Upper installation cable
Groove and steel column for contacting net；
Six, are in single line steel box-girder（1）Interior arrangement and tensioning web external prestressing steels（116）With base plate external prestressing steels
（117）, affiliated facility is improved, adjustable track is linear and recovers gapless track, opens circuit, and realization is open to traffic temporarily；
The concrete structure of the high-speed railway repairing beam of permanent bridge structure that what above step was formed can be exchanged into is：
I-beam including connecting spanning（7）Be separately positioned on the I-beam（7）The left and right sides and and I-beam（7）Connection
Single line steel box-girder（1）, temporary support is passed through on bridge pier pinner（6）Bracket cushion beam is set（5）, the I-beam（7）And single line
Steel box-girder（1）Two ends be seated the bracket cushion beam（5）On, the single line steel box-girder（1）Spliced by multiple box girder segments and
Into the single line steel box-girder（1）Upper surface passes through multiple I-steel bearing beams（4）It is provided with fragment-free track slab（3）, the single line steel
Box beam（1）Outside is provided with top flange cantilevered plate（2）, top flange cantilevered plate（2）It is upper that cable trough and steel column for contacting net are installed；It is described
Single line steel box-girder（1）On be provided with external prestressing steels, the single line steel box-girder（1）The diaphragm plate left and right sides and bottom are respectively provided with
There are multiple longitudinal direction external prestressing ducts（111）, the external prestressing steels are including passing through longitudinal external prestressing duct
（111）The web external prestressing steels of setting（116）With base plate external prestressing steels（117）.
2. the high-speed railway that can be exchanged into permanent bridge structure as claimed in claim 1 rushes to repair the emergency repair method of beam, its feature
Be be converted into permanent bridge Program for structural Transformation step it is as follows：
The circuit of seven, temporary closures sides, in the side single line steel box-girder（1）Upper flange and fragment-free track slab（3）Between pour it is mixed
Xtah Crude Clay structure layer（8）；
Eight, treat above-mentioned concrete（8）After reaching intensity requirement, in the side single line steel box-girder（1）Web disposed inboard abdomen
Plate external prestressing steels（116）With and apply prestressing force；
Base plate external prestressing steels above nine, adjustment lower wing plates（117）Stress level, the repairing beam on the side line road is changed
Into pre-stress steel-concrete combining structure, this side line road is opened；
The circuit of ten, temporary closure opposite sides, equally carries out the conversion of structural system to it according to the method described above, recovers double afterwards
Line is open to traffic；
11, are in middle I-beam（7）Top surface also casting concrete structure sheaf（8）, I-beam（7）Concrete layer and both sides
Single line steel box-girder（1）Concrete layer between reserve post-cast strip（81）；
12, utilize bolt by I-beam（7）Upper lower wing plate and both sides single line steel box-girder（1）Upper lower wing plate connect into one
Body；
Single line steel box-girders of 13, in both sides（1）Between install two-wire beam bridging horizontal-associate（9）, horizontal-associate is every 4 m settings one
Road, two-wire beam bridging horizontal-associate（9）Through I-beam（7）Honeycomb fashion web position of opening；
14, are in I-beam（7）Concrete layer and both sides repairing beam concrete layer between reserve post-cast strip（81）Upper filling
Rapid hardening support grouting material, by the I-beam（7）Concrete layer and both sides single line steel box-girder（1）Concrete layer connect into it is whole
Body；
15, are in both sides single line steel box-girder（1）Between transversely prestressed bars are installed（10）, near lower wing plate on 4 m sections
Each 1, tensioning is simultaneously fixed on transversely prestressed bars anchorage（112）On, by the single line steel box-girder of both sides（1）With middle I-shaped
Beam（7）It is connected, forms the whole hole Prestressed steel-concrete composite beam permanent bridge structure of two-wire；
16, install permanent bearing（20）, remove temporary support（6）, circuit resumes normal operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107354857A (en) * | 2017-08-30 | 2017-11-17 | 中铁工程设计咨询集团有限公司 | A kind of high-speed railway repairing combined box beam and its assemble method |
| CN108222051A (en) * | 2018-03-23 | 2018-06-29 | 中铁二院工程集团有限责任公司 | A kind of contact net upright post basic of railway steel reinforced concrete bondbeam and steel reinforced concrete combination bridge |
| CN108487291B (en) * | 2018-03-23 | 2020-07-28 | 中铁二院工程集团有限责任公司 | Installation method of contact net stand column foundation on railway steel-concrete composite beam |
| CN108930201B (en) * | 2018-08-27 | 2020-08-25 | 石家庄铁道大学 | Rail foundation |
| CN109594470A (en) * | 2018-11-08 | 2019-04-09 | 中国铁路总公司 | One kind can temporarily turn permanent superstructure |
| CN109853398B (en) * | 2019-04-05 | 2024-02-23 | 上海公路桥梁（集团）有限公司 | Temporary pre-stressing structure for prefabricated segment assembly bridge |
| CN111608094B (en) * | 2020-05-28 | 2021-09-03 | 中铁六局集团有限公司 | Construction method for polishing and repairing beam surface of high-speed railway cast-in-place box beam |
| CN112239991A (en) * | 2020-09-01 | 2021-01-19 | 中铁工程设计咨询集团有限公司 | Common span emergency repair simply-supported steel-concrete combined beam for railway |
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| CN200981976Y (en) * | 2006-03-14 | 2007-11-28 | 中铁工程设计咨询集团有限公司 | Checking vehicle for railway passenger transport private line concrete box-shape bridge |
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