CN106702876A - Steel-concrete composite beam bridge with sections continuously fabricated, pushed to places and then connected and rapid construction method of steel-concrete composite beam bridge - Google Patents
Steel-concrete composite beam bridge with sections continuously fabricated, pushed to places and then connected and rapid construction method of steel-concrete composite beam bridge Download PDFInfo
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- CN106702876A CN106702876A CN201611154756.7A CN201611154756A CN106702876A CN 106702876 A CN106702876 A CN 106702876A CN 201611154756 A CN201611154756 A CN 201611154756A CN 106702876 A CN106702876 A CN 106702876A
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- bridge
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- pushing tow
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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
- E01D1/00—Bridges in general
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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
- E01D19/00—Structural or constructional details of bridges
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel-concrete composite beam bridge with sections continuously fabricated, pushed to places and then connected and a rapid construction method of the steel-concrete composite beam bridge. The rapid construction method comprises the following steps that a, a concrete bridge deck is manufactured at the beam end of a completed bridge main body; b, the manufactured concrete bridge deck is pushed to slip onto bridge beams; c, the step a and the step b are sequentially repeated, and manufactured concrete bridge decks are sequentially pushed to slip onto the bridge beams, and the front concrete bridge decks are pushed onto the bridge main body through the later concrete bridge deck to forward slip; and d, the step c is repeated till the concrete bridge decks laid on the bridge beams reach a set length. By adoption of the steel-concrete composite beam bridge and the rapid construction method, full prefabrication-assembly construction can be conveniently achieved, the phenomenon that prefabricated bridge decks occupy enormous storage spaces in a prefabrication site and a bridge construction site can be avoided, and no extra large heavy hoisting and transporting equipment or corresponding transportation road is needed for transporting the prefabricated concrete bridge decks.
Description
Technical field
The invention belongs to science of bridge building field, the steel that the continuous prefabricated-pushing tow of more particularly to a kind of sections is coupled afterwards in place-
Concrete composite beam bridge and its quick method of construction.
Background technology
Two kinds of strength advantages of material, span be big, lightweight, energy consumption is relatively low giving full play to for Composite Steel-Concrete Bridges
Etc. aspect be respectively provided with obvious excellent, but existing Composite Steel-Concrete Bridges are both needed to be realized by cast-in-place concrete steel and mixed
The combination of solidifying soil bridge guidance tape, it is difficult to realize full fabricated construction；Prefabricated assembled bridge has prefabricated subsection reliable in quality, construction
Simple and efficient advantage；At present, realize that equipment, the site condition requirement of prefabricated assembled concrete bridge are very high, one is desirable
The prefabricated place of special large-scale component and corresponding prefabricated equipment, two is the storage space for needing large scale prefabricated concrete component, three
It is to need especially big heavy-duty hoisting and transportation equipment, four is the road transport condition for needing to transport large bridge component；It is provided simultaneously with
Aforementioned four condition can implement the prefabricated of large bridge component --- storage within setting period --- by large bridge structure
Part is transported to bridge construction scene, and --- by design requirement lifting in place --- it is overall bridge structure to be coupled.Precast splice type bridge
Also inevitably there is the structural seam of contiguous prefabricated sections in beam, be the weak part of precast splice type bridge, slightly not
It is careful to leave later stage disease hidden danger.
Accordingly, it would be desirable to one kind is easy to implement complete prefabricated-prefabricated construction, and can avoid being built in prefabricated place and bridge
The scene of making takes huge prefabricated bridge guidance tape parking space, and need not be using especially big heavy-duty hoisting and transportation equipment and corresponding fortune
The steel-concrete composite beams that the continuous prefabricated-pushing tow of sections that defeated road is transported to prefabricated concrete bridge guidance tape is coupled afterwards in place
Bridge and its quick method of construction.
The content of the invention
In view of this, complete prefabricated-prefabricated construction is easy to implement it is an object of the invention to provide one kind, and can be avoided
Huge prefabricated bridge guidance tape parking space is taken in prefabricated place and bridge construction scene, and especially big heavy-duty hoisting and fortune need not be used
Continuous prefabricated-the pushing tow of sections that defeated equipment and corresponding transport routes are transported to prefabricated concrete bridge guidance tape is in place
The steel-concrete composite beams bridge and its quick method of construction being coupled afterwards；
The girder of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections of the invention is coupled afterwards in place by bottom girder steel with
The longitudinal seam of top concrete bridge road rib of slab side pre-embedded steel slab welds the composite beam bridge that connection is formed after passing through.
The quick method of construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections of the invention is coupled afterwards in place, steel
Beam zonal cooling is assembled --- pushing tow moves forward in place on whole piers, platform ---, and the construction that pier is coupled with beam includes following step
Suddenly：
A1. bridge pier, platform construction are completed, to And of Varying Depth girder steel, can be used and be installed in advance under connection girder steel in pier coping portion
The steel construction of portion And of Varying Depth part；
A2. it is assembled in the special steel girder segment consolidation shed in bridge end to be coupled the height steel girder segments such as formation；
A3. the steel girder segment pushing tow that will be made makes it slide onto on previous bridge pier；
A4. in the continuous assembled latter girder steel section of connection in previous steel girder segment end in the special steel girder segment consolidation shed in bridge end
Section；
A5. step a2-a4 is repeated in, the height girder steel pushing tow that waits that will be made successively makes it slide onto the bridge pier
On, until completely in place on the bridge pier by height girder steel total lengths such as sets requirements；
A6. complete the steel construction of pier top and its And of Varying Depth part with etc. height girder steel be coupled；
The quick method of construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections of the invention is coupled afterwards in place, mixes
What bridge guidance tape was coupled with girder steel applies solidifying soil bridge guidance tape zonal cooling prefabricated --- pushing tow moves forward in place in girder steel total length ---
Work is comprised the following steps：
A. the concrete bridge road quick prefabricated shaping of plate segment is completed in the special precasting yard of end of the bridge；
B. the concrete bridge road plate segment that will be made is forward on thrusting slip to the girder steel；
C. step a and b are repeated in, the concrete bridge guidance tape pushing tow that will be made makes it slide onto on the girder steel；And
By latter concrete bridge guidance tape by the concrete bridge guidance tape of the prefabricated completion of zonal cooling before it along girder steel top surface pushing tow progressively
Slide forward；
D. repeat step c, until the concrete bridge guidance tape is in place in girder steel total length by sets requirement；
E. welded after passing through with the longitudinal seam of its lower girder steel top surface to top concrete bridge road rib of slab side pre-embedded steel slab and be connected
The steel-concrete composite beam bridge of formation.
Further, bridge guidance tape is the concrete slab that longitudinal rib of slab is provided with corresponding to steel beam structure top surface, and prefabricated mixed
The pre-buried vertical steel plate being provided with WELDING STUDS in the two sides of Ning Tuqiao roads rib of slab；
Further, in step c, in the previous concrete bridge road plate segment end latter bridge road plate segment coagulation of continuous placing
Soil；Latter concrete bridge guidance tape is set to form overall connection with previous concrete bridge guidance tape in manufacturing process；
Further, the making concrete bridge guidance tape is to be poured in the special precasting yard of end of the bridge and rapid curing shaping；
Further, during pushing tow, self-lubricating material is provided between the concrete bridge guidance tape and beam；
Further, the bridge main body is steel-concrete composite beams bridge main body, and the girder steel is steel truss girder or steel box-girder；
Further, the self-lubricating material is polytetrafluoroethylene (PTFE), and the polytetrafluoroethylene (PTFE) is made polyfluortetraethylene plate and divides
Cloth branch is padded between bridge guidance tape and beam；
Further, the step c can simultaneously be carried out at bridge two ends, until the concrete bridge guidance tape closes up；
Further, latter concrete bridge guidance tape can be used being coupled between previous concrete bridge guidance tape in casting process
The mode of reinforcing bar crosslinking forms connection；
The beneficial effects of the invention are as follows：The steel-concrete composite beams that the continuous prefabricated-pushing tow of sections of the invention is coupled afterwards in place
Bridge and its quick method of construction, while having the advantage of fabricated construction bridge and steel-concrete combined bridge concurrently：Reliable in quality, construction
It is simple and efficient, two kinds of strength advantages of material can be relatively given full play to, span is big, lightweight, energy consumption is relatively low；Due to using in end of the bridge
Complete steel girder segment in special fabricating yard and concrete bridge guidance tape zonal cooling quickly manufactured --- pushing tow extremely by sets requirement just
Position, it is to avoid conventional prefabricated-fabricated construction bridge needs huge large-scale component prefabricated and storage space, it is to avoid especially big heavy
Type lifting and the road transport condition of transportation equipment and transport large bridge component, it is thus also avoided that traditional prefabricated-pin-connected panel bridge
The contiguous prefabricated sections of beam has structural seam may caused later stage disease hidden danger；By in precast concrete bridge road rib of slab side
The steel plate of pre- buried strap WELDING STUDS welds connection formation steel-concrete after passing through with the longitudinal seam of its lower girder steel top surface combines knot
Structure, it is to avoid by poured in place concrete bridge guidance tape is coupled with girder steel for combining structure trouble and by quality ambiguity can
Can caused later stage disease hidden danger.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 be the present embodiment in make the 1st section of schematic diagram of steel girder segment at bridge end；
Fig. 2 is the 1st section of schematic diagram of steel girder segment of pushing tow in this implementation；
Fig. 3 is the 2nd section of schematic diagram of steel girder segment of pushing tow in the present embodiment；
Fig. 4 is the schematic diagram of completion girder steel construction in the present embodiment；
Fig. 5 is the schematic diagram in the present embodiment in bridge main body beam end making concrete bridge guidance tape；
Fig. 6 pushes the schematic diagram of girder steel to for the concrete bridge guidance tape that will be made in the present embodiment；
Fig. 7 is to make the schematic diagram of latter bridge guidance tape in the present embodiment；
Fig. 8 is the schematic diagram after laying to the concrete bridge guidance tape length of setting on girder steel in the present invention；
Fig. 9 is the equipment schematic diagram for implementing method of construction of the invention；
Figure 10 is the sectional drawing of girder steel of the invention；
Figure 11 is the sectional drawing of concrete bridge guidance tape of the invention；
Figure 12 is the sectional drawing before concrete bridge guidance tape of the invention is coupled with girder steel；
Figure 13 is the sectional drawing after concrete bridge guidance tape of the invention is coupled with girder steel.
Specific embodiment
Fig. 1 be the present embodiment in make the 1st section of schematic diagram of steel girder segment at bridge end；Fig. 2 is the 1st section of pushing tow in this implementation
The schematic diagram of steel girder segment；Fig. 3 is the 2nd section of schematic diagram of steel girder segment of pushing tow in the present embodiment；Fig. 4 is completion in the present embodiment
The schematic diagram of girder steel construction；Fig. 5 is the schematic diagram in the present embodiment in bridge main body beam end making concrete bridge guidance tape；Fig. 6
Push the schematic diagram of girder steel to for the concrete bridge guidance tape that will be made in the present embodiment；Fig. 7 be the present embodiment in make latter bridge
The schematic diagram of guidance tape；Fig. 8 is the schematic diagram after laying to the concrete bridge guidance tape length of setting on girder steel in the present invention；Fig. 9
To implement the equipment schematic diagram of method of construction of the invention；Figure 10 is the sectional drawing of girder steel of the invention；Figure 11 is of the invention
The sectional drawing of concrete bridge guidance tape；Figure 12 is the sectional drawing after concrete bridge guidance tape of the invention is coupled with girder steel, as illustrated,
The quick method of construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of the sections of the present embodiment is coupled afterwards in place, including it is following
Step：A. concrete bridge guidance tape 3 is made in the quick prefabricated factory 9 of intelligent bridge guidance tape of beam end for completing bridge main body；
B. the pushing tow of concrete bridge guidance tape 3 that will be made makes it slide onto on the beam；C. step a and b are repeated in, will be made successively
The good pushing tow of concrete bridge guidance tape 3 makes it slide onto on the bridge；And by latter concrete bridge guidance tape 3 by preceding coagulation
The native pushing tow of bridge guidance tape 3 slides forward on bridge main body；D. repeat step c, until on the beam laying to setting concrete
The length of bridge guidance tape 3；In the present embodiment, can using existing concrete bridge guidance tape 3 pour former bridge main body beam-ends into
Type concrete bridge guidance tape 3, after concrete bridge guidance tape 3 completes, using the grade thrustor of hydraulic cylinder 1 by concrete bridge guidance tape 3
On pushing tow to beam, the pushing tow of concrete bridge guidance tape 3 that will be made successively that repeats the above steps makes it slide onto on the bridge；And
The preceding pushing tow of concrete bridge guidance tape 3 is slid forward on bridge main body by latter concrete bridge guidance tape 3, until the steel
Laying builds steel concrete composite beam bridge, it is to avoid in prefabricated place to the length of concrete bridge guidance tape 3 of setting using this method on beam 4
Larger bridge guidance tape storage area is taken with bridge construction scene, and especially big heavy-duty hoisting and transportation equipment and phase need not be used
The transport routes answered are transported to prefabricated concrete bridge guidance tape 3.
In the present embodiment, in step c, latter concrete bridge guidance tape 3 in manufacturing process with the previous shape of concrete bridge guidance tape 3
Into connection, wherein, previous concrete bridge guidance tape 3 can be embedded with connector, latter concrete bridge guidance tape 3 in manufacturing process, its
Framework of steel reinforcement 5 can be connected with 3 kinds of pre-buried connectors of previous concrete bridge guidance tape；This structure can avoid previous concrete bridge
There is seam between guidance tape 3 and latter concrete bridge guidance tape 3, it is to avoid bridge guidance tape leaves later stage disease hidden danger.
In the present embodiment, the making concrete bridge guidance tape 3 is molded to pour simultaneously rapid curing, in the beam-ends of bridge main body
Portion sets a curing cover 2, and the curing cover 2 can be sling by big boat car 7, and the framework of steel reinforcement 5 for making concrete bridge guidance tape 3 can pass through
Small boat car 6 is lifted to the lower section of curing cover 2, and when making concrete bridge guidance tape 3, curing cover 2 is sling by big boat car 7, then utilizes
Be lifted to framework of steel reinforcement 5 in the bridge road plate forming die of the lower section of curing cover 2 by small boat car 6, and the shaping mould is automatic by hydraulic system
Matched moulds, to casting concrete in shaping mould with formation of concrete bridge guidance tape 3, after the completion of shaping, shaping mould passes through hydraulic pressure to casting machine
Curing cover 2 is transferred and covers in the bridge guidance tape after shaping outward by system automatic die sinking, the now big car 7 that navigates, and bridge guidance tape is carried out quickly
Maintenance；After the completion of maintenance, big boat car 7 slings curing cover 2, and the bridge guidance tape top for completing then will be conserved using hydraulic jack 1
Push away and slide onto on steel truss girder.
In the present embodiment, during pushing tow, self-lubricating material is provided between the concrete bridge guidance tape 3 and beam, with big
The big resistance for cutting down the sliding of concrete bridge guidance tape 3, certainly, may also set up guide frame, it is ensured that concrete bridge guidance tape 3 can on beam
Slid according to direction initialization.
In the present embodiment, the bridge main body is steel concrete composite beam bridge main body, and the beam is steel truss girder；Steel concrete composite beam bridge
Steel and the respective advantage of concrete material can be played, the resistance to compression of concrete and the tensile capacity of steel has been taken full advantage of, has made it
Have the advantage of steel construction and concrete structure concurrently, in the present embodiment, shear connector 10 is provided with girder steel, made by shear connector pre-
Bridge guidance tape 3 processed is coupled to form the bind mode of both Composite Steel-Concrete Bridges structures and belong to prior art with girder steel 4, herein
Repeat no more
In the present embodiment, the self-lubricating material is polytetrafluoroethylene (PTFE), and the polytetrafluoroethylene (PTFE) is made polyfluortetraethylene plate
And distribution is supported between bridge guidance tape and beam, polytetrafluoroethylene (PTFE) is formed by polyflon using die pressing compacting, can be held
The malleation for being increased, and with reliable excellent corrosion resistance, and low manufacture cost, the polytetrafluoroethylene (PTFE) in the present embodiment can divide
Cloth is in four bottoms at angle of bridge guidance tape, it is ensured that to the secure support of bridge guidance tape.
In the present embodiment, the step c can simultaneously be carried out at bridge two ends, until the concrete bridge guidance tape 3 closes up,
Two of bridge yet to be built makes concrete bridge guidance tape 3 simultaneously and the bridge guidance tape that will make is to beam middle part pushing tow, is greatly improved
The construction speed of bridge, the less engineering time, advantageously ensures that the duration.
In the present embodiment, latter concrete bridge guidance tape 3 being coupled between previous concrete bridge guidance tape 3 in casting process
Connection can be formed by the way of reinforcing bar crosslinking, previous concrete bridge guidance tape 3 should in its back-end be reserved with reinforcing bar when making,
In casting process, its framework of steel reinforcement 5 should be mutual with the reinforcing bar that previous concrete bridge guidance tape 3 is reserved for latter concrete bridge guidance tape 3
Crosslinking, realizes the connection of the two.
In the present embodiment, the construction of the bridge main body is comprised the following steps：A1. the construction of bridge pier is completed, and in bridge pier 8
The bottom that pier top connection in advance forms steel truss girder uprises steel construction, and the steel girder segment 4 of bridge main body is made at bridge end；A2. pushing tow
The steel girder segment 4 made, makes it slide onto on bridge pier 8, is that place is conceded in the making of next steel girder segment 4；A3. it is repeated in
Step a and b, the pushing tow of steel girder segment 4 that will be made successively make it slide onto on the bridge pier 8, and make latter steel girder segment 4
With previous steel girder segment 4 formed be coupled, and by latter steel girder segment 4 by the pushing tow of preceding steel girder segment 4 on bridge pier forward
Sliding；A4. repeat step a3, until being laid on the bridge pier to the girder steel length of setting, certainly, answers after the completion of the pushing tow of girder steel 4
The ground of bridge end is carried out padded, it is ensured that ground and girder steel either flush after padded, it is ensured that concrete bridge guidance tape 3 can be suitable
On sharp pushing tow to girder steel 4.
The invention also discloses the steel-concrete composite beams bridge that a kind of continuous prefabricated-pushing tow of sections is coupled afterwards in place, the bridge
The bridge guidance tape of beam by any of the above-described method by bridge guidance tape pushing tow it is in place after be linked on beam bridge, built using this method
Steel concrete composite beam bridge, can avoid taking larger bridge guidance tape storage area in prefabricated place and bridge construction scene, and need not
Prefabricated concrete bridge guidance tape 3 is transported using especially big heavy-duty hoisting and transportation equipment and corresponding transport routes.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of technical solution of the present invention, it all should cover at this
In the middle of the right of invention.
Claims (10)
1. the quick method of construction of the steel-concrete composite beams bridge that a kind of continuous prefabricated-pushing tow of sections is coupled afterwards in place, its feature exists
In comprising the following steps：
A. concrete bridge guidance tape is made in the beam end for completing bridge main body；
B. the concrete bridge guidance tape pushing tow that will be made makes it slide onto on the beam；
C. step a and b are repeated in, the concrete bridge guidance tape pushing tow that will be made successively makes it slide onto on the bridge；And
Preceding concrete bridge guidance tape pushing tow is slid forward on bridge main body by latter concrete bridge guidance tape；
D. repeat step c, until on the beam laying to setting concrete bridge guidance tape length.
2. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 1 is coupled afterwards in place
Method, it is characterised in that：In step c, latter concrete bridge guidance tape is formed with previous concrete bridge guidance tape in manufacturing process and joined
Knot.
3. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 1 is coupled afterwards in place
Method, it is characterised in that：The making concrete bridge guidance tape is molded to pour simultaneously rapid curing.
4. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 1 is coupled afterwards in place
Method, it is characterised in that：During pushing tow, self-lubricating material is provided between the concrete bridge guidance tape and beam.
5. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 1 is coupled afterwards in place
Method, it is characterised in that：The bridge main body is steel concrete composite beam bridge main body, and the beam is steel truss girder.
6. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 4 is coupled afterwards in place
Method, it is characterised in that：The self-lubricating material is polytetrafluoroethylene (PTFE), and the polytetrafluoroethylene (PTFE) is made polyfluortetraethylene plate and divides
Cloth is supported between bridge guidance tape and beam.
7. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 1 is coupled afterwards in place
Method, it is characterised in that：The step c can simultaneously be carried out at bridge two ends, until the concrete bridge guidance tape closes up.
8. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 3 is coupled afterwards in place
Method, it is characterised in that：Latter concrete bridge guidance tape can be adopted being coupled between previous concrete bridge guidance tape in casting process
The mode being crosslinked with reinforcing bar forms connection.
9. the quick construction of the steel-concrete composite beams bridge that the continuous prefabricated-pushing tow of sections according to claim 1 is coupled afterwards in place
Method, it is characterised in that the construction of the bridge main body is comprised the following steps：
A1. the girder segment of bridge main body is made at bridge end；
A2. the girder segment pushing tow that will be made makes it slide onto on bridge pier；
A3. step a1 and a2 are repeated in, the girder segment pushing tow that will be made successively makes it slide onto on the bridge pier；And pass through
Latter girder segment slides forward preceding girder segment pushing tow on bridge pier；
A4. repeat step a3, until on the bridge pier laying to setting beam length.
10. the steel-concrete composite beams bridge that a kind of continuous prefabricated-pushing tow of sections is coupled afterwards in place, it is characterised in that：The bridge of the bridge
Guidance tape by claim 1 to 9 method of any one by bridge guidance tape pushing tow it is in place after be linked on beam bridge.
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| CN201611154756.7A CN106702876A (en) | 2016-12-14 | 2016-12-14 | Steel-concrete composite beam bridge with sections continuously fabricated, pushed to places and then connected and rapid construction method of steel-concrete composite beam bridge |
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| CN201611154756.7A CN106702876A (en) | 2016-12-14 | 2016-12-14 | Steel-concrete composite beam bridge with sections continuously fabricated, pushed to places and then connected and rapid construction method of steel-concrete composite beam bridge |
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| CN108505445A (en) * | 2018-04-16 | 2018-09-07 | 中铁二局集团有限公司 | A kind of overbridge roof beam structure bridge construction method |
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| CN108505445A (en) * | 2018-04-16 | 2018-09-07 | 中铁二局集团有限公司 | A kind of overbridge roof beam structure bridge construction method |
| CN110258353A (en) * | 2019-07-31 | 2019-09-20 | 河南省交通规划设计研究院股份有限公司 | And of Varying Depth steel-concrete composite beams bridge construction technique with support |
| CN113481875A (en) * | 2021-08-23 | 2021-10-08 | 河南大方重型装备有限公司 | Incremental launching, transverse moving, splicing and mounting method for steel structure bridge |
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