CN108951433A - The ancillary equipment of steel box-girder cantilever construction - Google Patents
The ancillary equipment of steel box-girder cantilever construction Download PDFInfo
- Publication number
- CN108951433A CN108951433A CN201811125684.2A CN201811125684A CN108951433A CN 108951433 A CN108951433 A CN 108951433A CN 201811125684 A CN201811125684 A CN 201811125684A CN 108951433 A CN108951433 A CN 108951433A
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- Prior art keywords
- girder
- steel box
- steel
- wirerope
- jacking apparatus
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 105
- 239000010959 steel Substances 0.000 title claims abstract description 105
- 238000010276 construction Methods 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 claims description 8
- 239000003351 stiffener Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D12/00—Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of ancillary equipments of steel box-girder cantilever construction, comprising: connection otic placode and fixed device；At least one of wirerope, for providing additional rigidity for girder steel；Jacking apparatus, jacking apparatus is mounted in steel box-girder support segment by fixed device, after girder steel cantilever to preset length, the both ends of wirerope are connected with steel box girder cantilever end by connecting structure respectively, and the interlude of wirerope is constrained in the top card slot of jacking apparatus, to pass through the tension of at least one wirerope of height adjustment of control jacking apparatus.The ancillary equipment can effectively reduce the stress level of girder steel, it is avoided that the erection of Temporary Cable Tower and the tensioning of drag-line in traditional steel box girder cantilever method work progress, to reduce project amount, shorten construction period, and make the control deformed on the outside of cantilever beam more simple, simultaneously, the ancillary equipment install convenient, girder steel is i.e. dismountable after closing up, and can reuse, and greatly reduces the cost of construction.
Description
Technical field
The present invention relates to technical field of structural engineering, in particular to a kind of ancillary equipment of steel box-girder cantilever construction.
Background technique
As shown in Figure 1, setting up a Temporary Cable Tower in support area, and by Sarasota for the traditional approach of steel box-girder cantilever construction
It is connect, tensioning can be carried out to drag-line at Sarasota end or loosened by drag-line with steel box girder cantilever end.In the process of cantilever construction
In, the adjusting by Temporary Cable Tower end to drag-line can be effectively controlled the vertical deformation of cantilever end, and reduce girder steel stress level.
But the erection of Temporary Cable Tower needs to spend a large amount of duration and cost, the stretching process of drag-line is cumbersome, also wants after construction
The dismounting for carrying out Temporary Cable Tower, increases the cost of construction.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, it is an object of the invention to propose a kind of ancillary equipment of steel box-girder cantilever construction.
In order to achieve the above objectives, the invention proposes the ancillary equipments of steel box-girder cantilever construction, comprising: connection otic placode and solid
Determine device；At least one of wirerope, for providing additional rigidity for girder steel；Jacking apparatus, the jacking apparatus pass through described
Fixed device is mounted in steel box-girder support segment, after girder steel cantilever to preset length, the both ends of the wirerope to be divided
It is not connected with steel box girder cantilever end by connecting structure, and the interlude of the wirerope is constrained on the top of the jacking apparatus
It holds in card slot, to pass through the tension of at least one wirerope described in the height adjustment for controlling the jacking apparatus.
The ancillary equipment of the steel box-girder cantilever construction of the embodiment of the present invention, by during cantilever, with cantilever beam both ends
Fixed drag-line is tensioned by because of the control of middle part jacking apparatus, for steel box girder cantilever end provide upward tension component and
Eccentricity pressure close to top flange, can not only effectively reduce the vertical deformation of cantilever end, moreover it is possible to control answering for steel box-girder top flange
Power is horizontal, guarantees that girder steel closed up goes on smoothly, and reduce Temporary Cable Tower construction bring cost and duration, dismantles not only simple
It is also reusable, so that having good technical economic benefit and good promotion prospect.
In addition, the ancillary equipment of steel box-girder cantilever construction according to the above embodiment of the present invention can also have following add
Technical characteristic:
Further, in one embodiment of the invention, the material of the connection otic placode is identical as girder steel material.
Optionally, in one embodiment of the invention, the connection otic placode is one or more pairs of.
Further, in one embodiment of the invention, the center of the connection otic placode is equipped with opened round hole
Further, in one embodiment of the invention, the diameter at the opened round hole is connected according to wirerope
Aperture value obtains.
Further, in one embodiment of the invention, the connection otic placode is weldingly connected with the girder steel.
Further, in one embodiment of the invention, the bottom plate of the fixed device passes through inside bolt steel box-girder
Anchor pole connection, and be welded to connect with the jacking apparatus by ribbed stiffener on Suo Hu bottom plate and the jacking apparatus.
Further, in one embodiment of the invention, four direction is respectively provided with the fixed device in the horizontal plane
Ribbed stiffener, to limit the jacking apparatus deformation.
Further, in one embodiment of the invention, the card slot of the top setting of the jacking apparatus is used for
Limit the wirerope interlude to vertical or lateral deformation.
Further, in one embodiment of the invention, the diameter of the wirerope and number are according to the card slot
Size obtains.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of traditional steel box-girder cantilever construction in the related technology；
Fig. 2 is the novel cantilever ancillary equipment assembly structure diagram according to the embodiment of the present invention, wherein A-A is to face
Figure, B-B is side view；
Fig. 3 is the novel cantilever working procedure schematic diagram according to the embodiment of the present invention, wherein (a) is installed in place for equipment,
(b) it is first of wirerope jacking, (c) is jacked for second wirerope.
Description of symbols:
The ancillary equipment -10 of steel box-girder cantilever construction, connection otic placode -100, fixed device -200, at least one of wirerope -
300, jacking apparatus -400, girder steel -500, girder steel upper limb -501, steel beam web plate -502, girder steel lower edge -503, diaphragm plate -600 and
Underplate concrete -700.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing
The embodiment stated is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The ancillary equipment of the steel box-girder cantilever proposed according to embodiments of the present invention construction is described with reference to the accompanying drawings.
Fig. 2 is the ancillary equipment structural schematic diagram of the steel box-girder cantilever construction of one embodiment of the invention.
As shown in Fig. 2, the ancillary equipment 10 of steel box-girder cantilever construction includes: connection otic placode 100, fixed device 200, extremely
Few one of wirerope 300 and jacking apparatus 400.
Wherein, at least one of wirerope 300 is used to provide additional rigidity for girder steel 500.Jacking apparatus 400 passes through fixation
Device is mounted in steel box-girder support segment, with after 500 cantilever to preset length of girder steel, by the both ends of wirerope respectively with steel
Box girder cantilever end is connected by connecting structure, and the interlude of wirerope is constrained in the top card slot of jacking apparatus, with logical
Cross the tension of at least one wirerope of height adjustment of control jacking apparatus.The ancillary equipment 10 of the embodiment of the present invention shortens biography
The duration of Temporary Cable Tower erection and cable tension in system cantilever, construction cost is saved, while equipment making is simple, installing and dismounting
It is convenient, meet prefabricated construction theory, reusable, economic performance is more excellent.
Further, in one embodiment of the invention, the material of connection otic placode 100 is identical as girder steel material 500.
It should be noted that the bonding strength of connection otic placode 100 determines that jacking apparatus 400 is by very heavy according to design requirement
Top and its control equipment composition, the model and size of jack, convenient for fixing and installing, fix device according to determination is designed
200 size determines that at least one of wirerope 300 should meet in related specifications for steel wire according to the size of jacking apparatus 400
The requirement of rope production and processing quality, and intensity should meet design requirement, therefore be not specifically limited herein.Wherein, it is constructing
In the process, in different cantilever stage tensioning multiple tracks wirerope 300, control efficiency can be improved according to the design needs.
In other words, after the completion of holder top girder steel segment frame is set, jacking apparatus is mounted on steel box-girder by fixed device
In support segment, after 500 cantilever to certain length of girder steel, wirerope both ends is passed through with steel box girder cantilever end respectively and are connect
Construction is connected, and wirerope interlude is constrained in the card slot on jacking apparatus top, to prevent wirerope center due to cantilever end
Vertical deformation and decline.Wherein, the model and size of jack in jacking apparatus 400 are determined according to calculating before construction, with
And the design internal force of fixed device 200, the connection type of fixed device and steel box-girder is designed according to design internal force, with jacking apparatus
Connection type.
Further, in one embodiment of the invention, the diameter of wirerope and number are obtained according to the size of card slot.
It should be noted that at least one of 300 both ends of wirerope are connected with cantilever end girder steel by connection otic placode 100 respectively
It connects, interlude is constrained in the card slot at 400 top of support area jacking apparatus, to pass through the lifting of control jacking apparatus 400
The tension inside wirerope can be effectively adjusted, realizes the control for cantilever end vertical deformation.
The ancillary equipment of embodiment of the present invention cantilever of long-span bridge steel box-girder suitable for general is constructed, and is especially open
The steel box-girder of box combination beam is specifically retouched below with reference to the girder steel cantilever construction method of the ancillary equipment of the embodiment of the present invention
It states.
(1) after the completion of the steel girder erection of support segment, jacking apparatus 400 is passed through into fixed device 200 and is mounted on abutment segment
Inside girder steel, and 400 tip height of jacking apparatus is adjusted, so that the connecting structure at the top of it is higher than 500 top surface of girder steel.
(2) when cantilever reaches certain span to overhanging end, by least one of 300 both ends of wirerope and cantilever end girder steel
Connection otic placode 100 is fixed, the interlude of wirerope is constrained in the card slot at 400 top of jacking apparatus.
(3) height of jacking apparatus 400 is adjusted with stretching wire rope, to reduce cantilever end vertical deformation, until meeting
Design requirement.
(4) with the further progress of cantilever, multiple tracks wirerope can be socketed between cantilever end, and constrains in jacking dress
In the card slot for setting 400 tops, to promote the efficiency of cantilever end vertical deformation control.
(5) after girder steel 500 closes up, 400 height of jacking apparatus is adjusted, drag-line internal force is discharged, removes drag-line from outside to inside, tear open
Except jacking apparatus 400.
Further, in one embodiment of the invention, the card slot of the top setting of jacking apparatus 400 is for limiting steel
Cord interlude to vertical or lateral deformation.
Wherein, with the progress that cantilever is constructed, wirerope is tightened, and can be provided additional rigidity for girder steel 500, be prevented cantilever
Further deformation on the outside of beam, and reduce the stress level of support girder steel top plate.In addition to this, wirerope can also pass through control
The height of jacking apparatus processed and adjust steel wire rope tension, deformation and support girder steel top plate on the outside of cantilever beam are answered to realize
The control of power.With the increase of cantilever segment length, multiple tracks wirerope 300 can be added between jacking apparatus 400 and cantilever end, with
Promote control efficiency.When girder steel 500 closes up, span centre two sides cantilever end can be realized by the adjusting to jacking apparatus 400
Dock With Precision Position.
Further, in one embodiment of the invention, the bottom plate of fixed device 200 passes through anchor inside bolt steel box-girder
Bar connection, and be welded to connect with jacking apparatus 400 by ribbed stiffener on Suo Hu bottom plate and jacking apparatus 400.
That is, jacking apparatus 400 is passed through fixed device 200 and girder steel is affixed after the completion of the construction of abutment segment girder steel
Entirety is formed, also jacking apparatus 400 can be passed through into fixed device 200 in factory and abutment segment girder steel is affixed, be then transported to
Live integral hoisting.
Further, in one embodiment of the invention, fixed device 200 in the horizontal plane four direction be respectively provided with plus
Strength rib, to limit jacking apparatus deformation.
Optionally, in one embodiment of the invention, connection otic placode 100 can be one or more pairs of, connection otic placode 100
It is weldingly connected with girder steel 500.
Further, in one embodiment of the invention, the center of connection otic placode 100 is equipped with opened round hole, opens circle
The diameter at shape hole is obtained according to the aperture value that wirerope connects.
The ancillary equipment of the embodiment of the present invention and its construction method are further described below.
As shown in Fig. 2, cantilever ancillary equipment is by connection otic placode 100, fixed device 200, at least one of wirerope 300 and top
It rises device 400 to form, the assembling sequence of details is as follows:
(1) model and size for determining jack in jacking apparatus 400 are designed.When processing jacking apparatus 400, top
Portion is arranged card slot, card slot depth and width and determines all in accordance with wirerope number and diameter.
(2) according to the size of jacking apparatus 400 and abutment segment steel box-girder inside dimension, fixed 200 size of device is designed,
And design the connection of fixed device 200 with jacking apparatus 400 and steel box-girder, it is contemplated that transport and disassembly, it is proposed that fixed device and
Jacking apparatus welds to form entirety by triangle ribbed stiffener, and fixes after device base plate drilling using high-strength bolt and steel box-girder
The connection of bottom anchor pole.
(3) after having lifted support segment girder steel at the construction field (site), jacking apparatus 400 is passed through into fixed device 200 and steel case
Beam is affixed.Also jacking apparatus 400 can be installed, lifted together with support steel girder segment when processing support segment girder steel
To holder top.
(4) it for needing to carry out vertical deformation by least one of wirerope 300 to control steel box girder segment, is answered in processing
It is welded to connect otic placode 100 at steel girder cantilever end in advance, the girder steel upper limb wing 501 can be arranged in connection otic placode 100 according to the actual situation
Or 600 upper limb of diaphragm plate.
As shown in figure 3, the girder steel cantilever construction method of the ancillary equipment is cooperated to be broadly divided into two steps: the first step is wirerope
Installation and fixation, second step is the lifting of jacking apparatus, and concrete construction method is as follows:
(1) after cantilever to certain span, at least connection otic placode 100 and steel case will be passed through in one of 300 both ends of wirerope
Connection will be limited in the card slot at 400 top of jacking apparatus in the middle part of wirerope.
(2) 400 overhead height of jacking apparatus is adjusted, so that at least one of wirerope 300 is tensioned, so that it is perpendicular to adjust cantilever end
To being deformed within design value.
(3) lower section of girder steel of cantilever, until after certain span, tensioning second wirerope 3 according to the design needs, and adjust top
400 height of device is risen, cantilever vertical deformation is further controlled, until girder steel 500 closes up completion.
In conclusion the embodiment of the present invention has the advantages that relative to the relevant technologies
(1) since jacking apparatus and fixed device are to no longer need to set up interim in the steel box-girder interior construction of support segment
Sarasota shortens construction period；
(2) control of wirerope internal force can be realized by adjusting the lifting of jacking apparatus, compared to traditional Temporary Cable Tower
The drag-line and method for adjusting internal force is more convenient, simplifies construction technology.
(3) after constructing, the dismounting of jacking apparatus and drag-line is convenient and reusable, reduces construction cost.
The ancillary equipment of the steel box-girder cantilever construction proposed according to embodiments of the present invention is and outstanding by during cantilever
The fixed drag-line in arm beam both ends is tensioned by because of the control of middle part jacking apparatus, and upward tension is provided for steel box girder cantilever end
Component and the eccentricity pressure of close top flange, can not only effectively reduce the vertical deformation of cantilever end, moreover it is possible to control on steel box-girder
The stress level on the edge of a wing guarantees that girder steel closed up goes on smoothly, and reduces Temporary Cable Tower construction bring cost and duration, disassembly
It is not only simply also reusable, so that having good technical economic benefit and good promotion prospect.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of ancillary equipment of steel box-girder cantilever construction characterized by comprising
Connection otic placode and fixed device；
At least one of wirerope, for providing additional rigidity for girder steel；And
Jacking apparatus, the jacking apparatus is mounted in steel box-girder support segment by the fixed device, in girder steel cantilever
To after preset length, the both ends of the wirerope are connected with steel box girder cantilever end by connecting structure respectively, and the steel wire
The interlude of rope is constrained in the top card slot of the jacking apparatus, to pass through the height adjustment institute for controlling the jacking apparatus
State the tension of at least one wirerope.
2. the ancillary equipment of steel box-girder cantilever construction according to claim 1, which is characterized in that the material of the connection otic placode
Expect identical as girder steel material.
3. the ancillary equipment of steel box-girder cantilever construction according to claim 1, which is characterized in that the connection otic placode is one
Pair or it is multipair.
4. the ancillary equipment of steel box-girder cantilever construction according to claim 1 or 2, which is characterized in that the connection otic placode
Center be equipped with opened round hole.
5. the ancillary equipment of steel box-girder cantilever construction according to claim 4, which is characterized in that the opened round hole
Diameter is obtained according to the aperture value that wirerope connects.
6. the ancillary equipment of steel box-girder cantilever construction according to claim 1-5, which is characterized in that the connection
Otic placode is weldingly connected with the girder steel.
7. the ancillary equipment of steel box-girder cantilever construction according to claim 1, which is characterized in that the bottom of the fixed device
Plate is filled by anchor pole connection inside bolt steel box-girder, and with the jacking apparatus by ribbed stiffener on Suo Hu bottom plate and the jacking
Set welded connecting.
8. the ancillary equipment of steel box-girder cantilever construction according to claim 1, which is characterized in that the fixed device is in water
Four direction is respectively provided with ribbed stiffener in plane, to limit the jacking apparatus deformation.
9. the ancillary equipment of steel box-girder cantilever construction according to claim 1, which is characterized in that the top of the jacking apparatus
The card slot of portion's setting be used to limit the wirerope interlude to vertical or lateral deformation.
10. the ancillary equipment of steel box-girder cantilever according to claim 9 construction, which is characterized in that the wirerope it is straight
Diameter and number are obtained according to the size of the card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125684.2A CN108951433A (en) | 2018-09-26 | 2018-09-26 | The ancillary equipment of steel box-girder cantilever construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125684.2A CN108951433A (en) | 2018-09-26 | 2018-09-26 | The ancillary equipment of steel box-girder cantilever construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108951433A true CN108951433A (en) | 2018-12-07 |
Family
ID=64472092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811125684.2A Pending CN108951433A (en) | 2018-09-26 | 2018-09-26 | The ancillary equipment of steel box-girder cantilever construction |
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| CN (1) | CN108951433A (en) |
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|---|---|---|---|---|
| JP2004100382A (en) * | 2002-09-12 | 2004-04-02 | Mitsubishi Heavy Ind Ltd | Bridge girder erection method |
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| CN101408020A (en) * | 2008-11-13 | 2009-04-15 | 中铁十局集团有限公司 | Integral lifting rack of movable mould frame and method for hanging movable mould frame thereof |
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| CN108301331A (en) * | 2018-04-02 | 2018-07-20 | 山东省路桥集团有限公司 | Steel box-girder installation erection crane and steel box girder cantilever assembling and construction method |
| CN108532474A (en) * | 2018-03-29 | 2018-09-14 | 中冶华天工程技术有限公司 | A kind of the overturn-preventing bracing means and installation method of Single column pier bridge |
| CN209397494U (en) * | 2018-09-26 | 2019-09-17 | 清华大学 | The ancillary equipment of steel box-girder cantilever construction |
-
2018
- 2018-09-26 CN CN201811125684.2A patent/CN108951433A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004100382A (en) * | 2002-09-12 | 2004-04-02 | Mitsubishi Heavy Ind Ltd | Bridge girder erection method |
| CN101139821A (en) * | 2007-10-16 | 2008-03-12 | 中铁大桥局集团第四工程有限公司 | Method and system for erecting steel trusses by stay cable auxiliary complete cantilever |
| CN101408020A (en) * | 2008-11-13 | 2009-04-15 | 中铁十局集团有限公司 | Integral lifting rack of movable mould frame and method for hanging movable mould frame thereof |
| CN102182147A (en) * | 2011-03-31 | 2011-09-14 | 中铁港航局集团第二工程有限公司 | Steel box girder erection method |
| CN108532474A (en) * | 2018-03-29 | 2018-09-14 | 中冶华天工程技术有限公司 | A kind of the overturn-preventing bracing means and installation method of Single column pier bridge |
| CN108301331A (en) * | 2018-04-02 | 2018-07-20 | 山东省路桥集团有限公司 | Steel box-girder installation erection crane and steel box girder cantilever assembling and construction method |
| CN209397494U (en) * | 2018-09-26 | 2019-09-17 | 清华大学 | The ancillary equipment of steel box-girder cantilever construction |
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