CN208668245U - A kind of steel-UHPC combination beam construction for cable-stayed bridge - Google Patents
A kind of steel-UHPC combination beam construction for cable-stayed bridge Download PDFInfo
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- CN208668245U CN208668245U CN201820962479.0U CN201820962479U CN208668245U CN 208668245 U CN208668245 U CN 208668245U CN 201820962479 U CN201820962479 U CN 201820962479U CN 208668245 U CN208668245 U CN 208668245U
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Abstract
A kind of steel-UHPC combination beam construction for cable-stayed bridge, the main longitudinal grider being arranged in parallel including two, two or more the crossbeams being connected with main longitudinal grider, and two pieces or more UHPC prefabricated boards, each crossbeam is evenly arranged in along longitudinal direction between two main longitudinal griders, adjacent two crossbeams are connected by intermediate longitudinal girder, main longitudinal grider, intermediate longitudinal girder and adjacent two beam engagements form girder steel lattice, each prefabricated board is erected on correspondingly on each girder steel lattice, the main longitudinal cast-in-site stripe of UHPC is set on main longitudinal grider, longitudinal cast-in-site stripe among UHPC is set on intermediate longitudinal girder, UHPC transverse direction cast-in-site stripe is set on crossbeam, main longitudinal direction cast-in-site stripe, shear key is all provided in intermediate longitudinal direction cast-in-site stripe and lateral cast-in-site stripe, shear key in main longitudinal direction cast-in-site stripe is connected with main longitudinal grider, shear key in intermediate longitudinal direction cast-in-site stripe is connected with intermediate longitudinal girder, lateral cast-in-site stripe Interior shear key is connected with crossbeam.The combination beam performance is good, low cost, it is adaptable, be conducive to cable-stayed bridge and develop towards more Long span.
Description
Technical field
The utility model relates to technical field of bridge engineering more particularly to a kind of steel-UHPC combination beams for cable-stayed bridge
Construction.
Background technique
Cable-stayed bridge is a kind of rope supporting system bridge, i.e., on Sarasota with several oblique drag-lines supported girder with across compared with
The obstacles such as big river valley.Drag-line plays the role of multiple spot elastic bearing to girder, greatly reduces moment of flexure and beam body size in beam, across
More ability significantly increases.The wind resisting stability of cable-stayed bridge is better than suspension bridge, and landscape effect is preferable, and construction technology is mature, cost warp
Ji, has good applicability for the across footpath of 300~1000m, is the main bridge type that Longspan Bridge uses.
Cable-stayed bridge main-beam not only needs to undertake the moment of flexure because of the generation of the bridge floors load such as self weight, automobile and affiliated facility and cuts
Power, while also to undertake axial compressive force caused by horizontal component force of stayed cable.Have at present using more cable-stayed bridge main-beam form mixed
Solidifying Tu Liang, girder steel, steel-mix combination beam and steel-mixes hybrid beam (mid-span steel girder, end bay beams of concrete).Concrete girder self weight
It is larger, it creeps in autogenous shrinkage and under the action of external loads, the diseases such as cracking is easy to produce during operation, under normal conditions only
Suitable for the lesser cable-stayed bridge (400m or less) of across footpath.Girder steel self weight it is lighter, suitable for compared with Long span cable-stayed bridge (600m with
On), but its cost is often costly, and common Orthotropic steel plate bridge floor easily occurs under wheel load effect
The disease of fatigue cracking and deck paving breakage, it is difficult to eradicate.Steel-mixes the spy that combination beam takes into account steel tension, concrete anti-compression
Point, both avoided beams of concrete be self-possessed it is excessive lead to suspension cable, Sarasota and its excessively high problem of foundation cost, also avoid simultaneously
The problem of pure steel structure girder cost is excessively high, bridge floor fatiguability destroys, superior technical and economic performance is highly suitable for across footpath
The cable-stayed bridge of 400~600m.But the floorings that traditional steel-mixes combination beam generally use C60 concrete, bridge floor plate thickness one
As larger (26~30cm) so that steel-mixes combination beam and is self-possessed compared with girder steel still larger thus cause suspension cable specification, Sarasota
Larger reduces its economy, limits its application in the more large span stayed-cable bridge a possibility that.
With the development of bridge technology, UHPC (Ultra-High Performance Concrete, very-high performance coagulation
Soil) selection that is possibly realized of material.UHPC tension, compression strength are high, and cracking resistance is good, not only can be effective as bridge floor plate material
Improve the stress performance and durability of floorings, but also the thickness of floorings can be greatly reduced to significantly mitigate combination beam certainly
Weight enables combination girder stayed-cable bridge to develop towards more Long span (600m or more).Flat box-shaped steel-UHPC combination beam must be whole
Body lifting construction is unfavorable for applying under the poor environment in mountain area and other execution conditions.
Utility model content
The technical problems to be solved in the utility model be overcome the deficiencies of the prior art and provide a kind of good performance, low cost,
Steel-the UHPC for cable-stayed bridge that execution conditions are adaptable, are conducive to develop towards more Long span combines beam construction.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of steel-the UHPC for cable-stayed bridge combines beam construction, including two main longitudinal griders being arranged in parallel, two it is above and
The connected crossbeam of main longitudinal grider and two pieces or more UHPC prefabricated board, each crossbeam are evenly arranged in two masters along longitudinal direction
Between stringer, it is connected in the middle part of adjacent two crossbeams by intermediate longitudinal girder, the main longitudinal grider, intermediate longitudinal girder and two adjacent
Beam engagement forms girder steel lattice, and each prefabricated board is erected on each girder steel lattice correspondingly, sets on the main longitudinal grider
There is the main longitudinal cast-in-site stripe of UHPC, the intermediate longitudinal girder is equipped with longitudinal cast-in-site stripe among UHPC, and it is horizontal that the crossbeam is equipped with UHPC
To cast-in-site stripe, it is equipped with shear key in main longitudinal cast-in-site stripe, intermediate longitudinal cast-in-site stripe and lateral cast-in-site stripe, the master is vertical
Shear key into cast-in-site stripe is connected with the main longitudinal grider, the shear key and the intermediate longitudinal girder in intermediate longitudinal cast-in-site stripe
It is connected, the shear key in the transverse direction cast-in-site stripe is connected with the crossbeam.
As a further improvement of the above technical scheme: the position thickness that the prefabricated board lower part is contacted with the girder steel lattice
It increases, is conducive to the stress performance for improving prefabricated board itself.
As a further improvement of the above technical scheme: the main longitudinal grider uses I-shaped section, and main longitudinal grider includes main vertical
Back plate, main longitudinal grider web and main longitudinal grider bottom plate, the main longitudinal grider top plate are connected with the shear key, the main longitudinal grider web
Outside is welded with muti-piece longitudinal direction stiffened steel plates, and longitudinal direction stiffened steel plates described in muti-piece are vertically evenly arranged, the main longitudinal grider top plate
Between longitudinal stiffened steel plates of top side, between adjacent two longitudinal stiffened steel plates and described in lower side
Outer lateral stiffening steel plate, welding on the inside of the main longitudinal grider web are welded between longitudinal stiffened steel plates and the main longitudinal grider bottom plate
There is interior lateral stiffening steel plate.The main longitudinal grider structure of this kind of structure is simple, reliable, has biggish bending stiffness, local stability
By force, it is able to bear axial compressive force caused by biggish moment of flexure and oblique pull lock horizontal component.
As a further improvement of the above technical scheme: the crossbeam use I-shaped section, crossbeam include crossbeam top plate,
Cantilever diaphragm and crossbeam bottom plate, the crossbeam top plate are connected with the shear key, and horizontal add is welded on the cantilever diaphragm
Strength steel plate and the vertical stiffened steel plates of muti-piece, vertical stiffened steel plates described in muti-piece are transversely evenly arranged, the cantilever diaphragm with
It is provided with splicing steel plate between the interior lateral stiffening steel plate, between the splicing steel plate and the cantilever diaphragm and splices
It is connected respectively by high-strength bolt between steel plate and the interior lateral stiffening steel plate.Crossbeam is mainly used to provide branch for floorings
Support, and bridge floor load is transferred on main longitudinal grider, the beam structure of this kind of structure is simple, reliable, and the local stability of itself is strong.
As a further improvement of the above technical scheme: the intermediate longitudinal girder uses I-shaped section, and intermediate longitudinal girder includes
Intermediate longitudinal girder top plate, intermediate longitudinal girder web and intermediate longitudinal girder bottom plate, intermediate longitudinal girder top plate are connected with the shear key, it is described in
Between the vertical dimension of longitudinal-beam web plate be less than the vertical dimension of the main longitudinal grider web, in the middle part of the intermediate longitudinal girder web and crossbeam
It is connected between the vertical stiffened steel plates by high-strength bolt.Intermediate longitudinal girder is mainly used to laterally separated floorings, reduces bridge floor
The hoisting weight of plate, while the also template as intermediate longitudinal cast-in-site stripe.
Compared with the prior art, the advantages of the utility model are: the steel-disclosed by the utility model for cable-stayed bridge
UHPC combines beam construction, and main longitudinal grider, two longitudinally adjacent crossbeams and intermediate longitudinal girder overlap to form girder steel lattice, pre- using UHPC
Making sheet is as floorings and is layed on girder steel lattice, by the shear key being arranged on each girder steel, realize cast-in-site stripe and each girder steel it
Between connection ensure that the switching performance and holistic resistant behavior of girder so that floorings and girder steel lattice are connected as entirety；And
Girder steel lattice can use the integral hoisting of girder steel lattice, can also use bridge location assembly, compensate for flat box-shaped steel-UHPC combination
The deficiency of the necessary integral hoisting construction of beam, is conducive to apply under the poor environment in mountain area and other execution conditions；Intermediate longitudinal girder
Bridge floor is laterally divided into two parts, reduces the hoisting weight of prefabricated board, reduces difficulty of construction, while can also be acted on intermediate vertical
To the template of cast-in-site stripe；UHPC bridge floor plate thickness can be reduced to 17cm, compared to the plate thickness that concrete slab can reduce by 40%,
Prefabricated board lifting weight mitigates significantly, reduces lifting construction difficulty, while entire girder self weight is also greatly reduced, Jin Erke
To reduce suspension cable specification and Sarasota size, anti-seismic performance is good, saves project cost, moreover it is possible to make to combine girder stayed-cable bridge towards more greatly
Across footpath development；UHPC floorings tension, cracking resistance are superior, and durability is very good, and being not required to setting prestressed strand can expire
The crack resistance requirement of sufficient floorings, so that girder is constructed and is constructed becomes more simple；UHPC floorings later period shrinkage and creep is smaller,
Problem of Cracking caused by concrete slab shrinkage and creep can be not only effectively reduced, but also prefabricated board can also be greatly shortened and deposited
The time is put, is shortened the construction period；UHPC bridge floor panel stiffness is larger, and fatigue behaviour is good, and strong with the associativity of deck paving, can be effective
The fatigue cracking for avoiding Orthotropic steel plate from being easy to appear and breakage of mating formation, reduce difficulty and the life-cycle of bridge maintenance
Life cycle costing.
Detailed description of the invention
Fig. 1 is the overlooking structure diagram of steel-UHPC combination beam construction of the utility model for cable-stayed bridge.
Fig. 2 is the A-A view in Fig. 1.
Fig. 3 is the B-B view in Fig. 1.
Fig. 4 is the structural schematic diagram of the anchor tie plate in the utility model.
Each label indicates in figure: 1, intermediate longitudinal girder；2, main longitudinal grider；3, prefabricated board；4, crossbeam；5, main longitudinal cast-in-site stripe；6,
Intermediate longitudinal direction cast-in-site stripe；7, lateral cast-in-site stripe；9, shear key；12, main longitudinal grider top plate；13, main longitudinal grider web；14, main longitudinal grider bottom
Plate；15, longitudinal stiffened steel plates；16, outer lateral stiffening steel plate；17, interior lateral stiffening steel plate；18, crossbeam top plate；19, crossbeam abdomen
Plate；20, crossbeam bottom plate；21, sash steel plate；22, vertical stiffened steel plates；23, splice steel plate；24, high-strength bolt；25, in
Between stringer top plate；26, intermediate longitudinal girder web；27, intermediate longitudinal girder bottom plate；28, anchor tie plate；29, anchor tie plate stiffened steel plates；30, main
Stringer anchor draws stiffened steel plates.
Specific embodiment
The utility model is described in further detail below in conjunction with Figure of description and specific embodiment.
Fig. 1 to Fig. 4 shows an embodiment of the present invention, the steel-UHPC group for cable-stayed bridge of the present embodiment
Close beam construction, main longitudinal grider 2 has twice, be arranged in parallel in two sides, on main longitudinal grider 2 based on longitudinal cast-in-site stripe 5；Intermediate longitudinal girder 1 has one
Road is arranged among twice main longitudinal grider 2, and bridge floor direction across bridge is halved, and is intermediate longitudinal cast-in-site stripe 6 on intermediate longitudinal girder 1；Crossbeam
It is lateral cast-in-site stripe 7 on 4.Main longitudinal grider 2, intermediate longitudinal girder 1, crossbeam 4 surround Investigation of Reinforcing Rectangular Steel Beam lattice, and UHPC prefabricated board 3 is shelved thereon, led to
Cross each cast-in-site stripe, shear key 9 connect with girder steel lattice it is integral.
The main longitudinal grider 2 of girder steel lattice is I-shape cross section, by main longitudinal grider top plate 12, main longitudinal grider web 13, main longitudinal grider bottom plate 14
It constitutes, main longitudinal grider 2 is 2960mm high (or size of vertical direction), wherein 12 width 900mm of main longitudinal grider top plate, thickness 40mm；It is main vertical
Web 13 is 2840mm high, thickness 32mm；14 width 1000mm of main longitudinal grider bottom plate, thickness 80mm.To enhance main longitudinal grider top plate 12, main longitudinal grider
13 outside of local stability main longitudinal grider web of web 13 and main longitudinal grider bottom plate 14 is vertically equidistantly welded with three pieces of longitudinal directions and puts more energy into
Steel plate 15, between adjacent two pieces of longitudinal stiffened steel plates 15, between main longitudinal grider top plate 12 and longitudinal stiffened steel plates 15 of the top, with
And outer lateral stiffening steel plate 16, main longitudinal grider web are welded between main longitudinal grider bottom plate 14 and longitudinal stiffened steel plates 15 of bottom
13 insides are welded with interior lateral stiffening steel plate 17.Intermediate longitudinal girder 1 is the lesser I-steel component of height, and the high 370mm in section is main
It is used for the effect of direction across bridge segmentation floorings, to reduce the lifting weight of prefabricated board 3, while as intermediate longitudinal cast-in-site stripe 6
Template.It is boundary with intermediate longitudinal girder 1,3 direction across bridge of UHPC prefabricated board is divided into two pieces, the 12980mm long, width of monolithic prefabricated board 3
3000mm, standard thickness 170mm, the position that prefabricated board 3 is contacted with main longitudinal grider 2, intermediate longitudinal girder 1 and crossbeam 4 locally thicken extremely
230mm.2 top surface of main longitudinal grider is provided with the main longitudinal cast-in-site stripe 5 of UHPC, is provided among UHPC in 1 top surface of intermediate longitudinal girder longitudinal
Cast-in-site stripe 6, the shear key 9 by being welded on main longitudinal grider 2,1 top surface of intermediate longitudinal girder are connect with main longitudinal grider 2, intermediate longitudinal girder 1.Wherein,
Shear key 9 preferably uses WELDING STUDS；Main longitudinal direction cast-in-site stripe 5, intermediate longitudinal 6 bottom of cast-in-site stripe difference width 820mm and 400mm are thick
Degree is 240mm.
4 height of crossbeam of girder steel lattice is slightly less than 2 height of main longitudinal grider, I-shape cross section is also used, by crossbeam top plate 18, crossbeam
Web 19, crossbeam bottom plate 20 are constituted, centerline deck-molding 2760mm, middle cross beam top plate 18, crossbeam bottom plate 20 width 600mm,
Thick 24mm；19 thickness 14mm of cantilever diaphragm.For the local stability for ensuring cantilever diaphragm 19, weld horizontal is put more energy into steel on cantilever diaphragm 19
Plate 21 and the vertical stiffened steel plates 22 of muti-piece, the vertical stiffened steel plates 22 of muti-piece are transversely evenly arranged.4 end of crossbeam passes through splicing steel
Plate 23 and high-strength bolt 24 are connected with the interior lateral stiffening steel plate 17 of main longitudinal grider 2, and the vertical stiffened steel plates 22 at 4 middle part of crossbeam are in
Between the intermediate longitudinal girder web 26 of stringer 1 spliced by high-strength bolt 24, ultimately form girder steel lattice.The setting of 4 top surface of crossbeam is laterally existing
Band 7 is poured, is equally connect by WELDING STUDS with crossbeam top plate 18.The lateral wide 500mm in 7 bottom of cast-in-site stripe, thick 240mm.Anchor tie plate 28
It is welded on main longitudinal grider top plate 12,28 center line of anchor tie plate is aligned with main longitudinal grider web 13, and suspension cable passes through anchor tie plate 28 and master
Beam is anchored.Wherein, anchor tie plate 28 is configured with two pieces of anchor tie plate stiffened steel plates 29, and main longitudinal grider top plate 12 and anchor tie plate are put more energy into steel
It is accordingly welded with main longitudinal grider anchor below the position while welding of plate 29 and draws stiffened steel plates 30.
When Specific construction, piecewise free cantilever erection is carried out to girder steel lattice first and suspension cable is installed, subsequent piecemeal lifting corresponds to
The UHPC prefabricated board 3 of beam section, last subregion construction UHPC transverse direction cast-in-site stripe 7, main longitudinal cast-in-site stripe 5 and intermediate longitudinal cast-in-site stripe
6 and high temperature steam curing is carried out, the two times tensioning suspension cable after each cast-in-site stripe reaches design strength, then next beam section is set up, such as
This circulation is until closure.In order to utmostly reduce UHPC floorings shrinkage and creep to the adverse effect of main beam structure, prefabricated board 3
Using high temperature steam curing, and at precasting yard storage no less than 2 months.
The construction method of the steel master-UHPC combination beam construction for cable-stayed bridge of the present embodiment is specific as follows:
1) divide beam section processing and manufacturing main longitudinal grider 2, crossbeam 4, intermediate longitudinal girder 1 and anchor tie plate 28,28 groups of anchor tie plate are welded in
On main longitudinal grider top plate 12, and socket cap WELDING STUDS is welded in main longitudinal grider 2, crossbeam 4 and 1 top surface of intermediate longitudinal girder, in steel structure surface
Do anticorrosive coating；According to the size installation template of monolithic UHPC prefabricated board 3, prefabricated board reinforcing bar 10 is bound, casting very-high performance is mixed
Solidifying soil simultaneously carries out high temperature steam curing, reaches after design strength demoulding storage no less than 2 months.
2) using bridge floor walking loop wheel machine, the piecewise free cantilever erection main longitudinal grider 2 of bridge location, crossbeam 4 and intermediate longitudinal girder 1 are to form girder steel
Lattice, installation suspension cable are anchored on anchor tie plate 28 and carry out first time tensioning.
3) bridge location hoisting prefabricated plate 3 paragraph by paragraph, is held on girder steel lattice top surface；
4) being poured each cast-in-site stripe ultra-high performance concrete makes each prefabricated bridge and girder steel lattice be linked to be entirety.
5) high temperature steam curing is carried out to each cast-in-site stripe, second of tensioning is carried out to suspension cable after reaching design strength.
6) circulation carries out 2~step 5 of above-mentioned steps, until full-bridge joins the two sections of a bridge, etc.
7) wearing course is overlayed on floorings and is conserved, and construction is completed.
Although the utility model has been disclosed with preferred embodiment as above, it is not intended to limit the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above
Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, all contents without departing from technical solutions of the utility model, according to the utility model technical spirit to the above reality
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model protection.
Claims (4)
1. a kind of steel-UHPC for cable-stayed bridge combines beam construction, it is characterised in that: the main longitudinal grider being arranged in parallel including two
(2), two or more the crossbeams (4) being connected with main longitudinal grider (2) and two pieces or more UHPC prefabricated board (3), each crossbeam (4)
It is evenly arranged between two main longitudinal griders (2) along longitudinal direction, passes through intermediate longitudinal girder (1) in the middle part of adjacent two crossbeams (4)
It is connected, the main longitudinal grider (2), intermediate longitudinal girder (1) and adjacent two crossbeams (4) cooperatively form girder steel lattice, each prefabricated board
(3) it is erected on correspondingly on each girder steel lattice, the main longitudinal grider (2) is equipped with the main longitudinal cast-in-site stripe (5) of UHPC, described
Intermediate longitudinal girder (1) is equipped with longitudinal cast-in-site stripe (6), the crossbeam (4) among UHPC and is equipped with UHPC transverse direction cast-in-site stripe (7), institute
It states in main longitudinal cast-in-site stripe (5), intermediate longitudinal cast-in-site stripe (6) and lateral cast-in-site stripe (7) and is equipped with shear key (9), the master
Shear key (9) in longitudinal cast-in-site stripe (5) is connected with the main longitudinal grider (2), the shear key in intermediate longitudinal cast-in-site stripe (6)
(9) it is connected with the intermediate longitudinal girder (1), the shear key (9) in the transverse direction cast-in-site stripe (7) is connected with the crossbeam (4).
2. steel-the UHPC according to claim 1 for cable-stayed bridge combines beam construction, it is characterised in that: the main longitudinal grider
(2) I-shaped section is used, main longitudinal grider (2) includes main longitudinal grider top plate (12), main longitudinal grider web (13) and main longitudinal grider bottom plate
(14), the main longitudinal grider top plate (12) is connected with the shear key (9), and it is vertical that muti-piece is welded on the outside of the main longitudinal grider web (13)
To stiffened steel plates (15), longitudinal direction stiffened steel plates (15) described in muti-piece are vertically evenly arranged, the main longitudinal grider top plate (12) with most
Between longitudinal stiffened steel plates (15) of upside, between adjacent two longitudinal stiffened steel plates (15) and lower side
Outer lateral stiffening steel plate (16), the master are welded between the longitudinal direction stiffened steel plates (15) and the main longitudinal grider bottom plate (14)
Interior lateral stiffening steel plate (17) is welded on the inside of longitudinal-beam web plate (13).
3. steel-the UHPC according to claim 2 for cable-stayed bridge combines beam construction, it is characterised in that: the crossbeam (4)
Using I-shaped section, crossbeam (4) includes crossbeam top plate (18), cantilever diaphragm (19) and crossbeam bottom plate (20), the crossbeam
Top plate (18) is connected with the shear key (9), is welded with sash steel plate (21) and muti-piece on the cantilever diaphragm (19)
Vertical stiffened steel plates (22), vertical stiffened steel plates (22) described in muti-piece are transversely evenly arranged, the cantilever diaphragm (19) and institute
It states and is provided with splicing steel plate (23) between interior lateral stiffening steel plate (17), the splicing steel plate (23) and the cantilever diaphragm (19)
Between and splicing steel plate (23) and the interior lateral stiffening steel plate (17) between pass through high-strength bolt (24) respectively and connect.
4. steel-the UHPC according to claim 3 for cable-stayed bridge combines beam construction, it is characterised in that: the centre is vertical
Beam (1) uses I-shaped section, and intermediate longitudinal girder (1) includes intermediate longitudinal girder top plate (25), intermediate longitudinal girder web (26) and centre
Stringer bottom plate (27), the intermediate longitudinal girder top plate (25) are connected with the shear key (9), and the intermediate longitudinal girder web (26) is erected
It is less than the vertical dimension of the main longitudinal grider web (13), the institute in the middle part of the intermediate longitudinal girder web (26) and crossbeam (4) to size
It states and is connected between vertical stiffened steel plates (22) by high-strength bolt (24).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820962479.0U CN208668245U (en) | 2018-06-21 | 2018-06-21 | A kind of steel-UHPC combination beam construction for cable-stayed bridge |
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| CN201820962479.0U CN208668245U (en) | 2018-06-21 | 2018-06-21 | A kind of steel-UHPC combination beam construction for cable-stayed bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921806A (en) * | 2019-12-05 | 2021-06-08 | 南京林业大学 | Device for strengthening UHPC-NC interface bonding by adopting split bolts and manufacturing method |
| CN113605214A (en) * | 2021-08-23 | 2021-11-05 | 中铁大桥勘测设计院集团有限公司 | Widening main beam of longitudinal and transverse combination beam |
-
2018
- 2018-06-21 CN CN201820962479.0U patent/CN208668245U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921806A (en) * | 2019-12-05 | 2021-06-08 | 南京林业大学 | Device for strengthening UHPC-NC interface bonding by adopting split bolts and manufacturing method |
| CN113605214A (en) * | 2021-08-23 | 2021-11-05 | 中铁大桥勘测设计院集团有限公司 | Widening main beam of longitudinal and transverse combination beam |
| CN113605214B (en) * | 2021-08-23 | 2022-11-18 | 中铁大桥勘测设计院集团有限公司 | Widening main beam of longitudinal and transverse combination beam |
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