CN209397494U - The ancillary equipment of steel box-girder cantilever construction - Google Patents
The ancillary equipment of steel box-girder cantilever construction Download PDFInfo
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- CN209397494U CN209397494U CN201821575887.7U CN201821575887U CN209397494U CN 209397494 U CN209397494 U CN 209397494U CN 201821575887 U CN201821575887 U CN 201821575887U CN 209397494 U CN209397494 U CN 209397494U
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- girder
- jacking apparatus
- steel
- wirerope
- steel box
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Abstract
The utility model proposes 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 utility model 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.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.
For this purpose, the purpose of this utility model is that proposing a kind of ancillary equipment of steel box-girder cantilever construction.
In order to achieve the above objectives, the utility model proposes the ancillary equipments of steel box-girder cantilever construction, comprising: connection otic placode
With fixed device；At least one of wirerope, for providing additional rigidity for girder steel；Jacking apparatus, the jacking apparatus pass through
The fixed device is mounted in steel box-girder support segment, with after girder steel cantilever to preset length, by the two of the wirerope
End is connected with steel box girder cantilever end by connecting structure respectively, and the interlude of the wirerope is constrained on the jacking apparatus
Top card slot in, 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 utility model, by consolidating during cantilever with cantilever beam both ends
Fixed drag-line is tensioned by because of the control of middle part jacking apparatus, is provided upward tension component for steel box girder cantilever end and is leaned on
The eccentricity pressure of nearly top flange, can not only effectively reduce the vertical deformation of cantilever end, moreover it is possible to control the stress of steel box-girder top flange
Level guarantees that girder steel closed up goes on smoothly, and reduces Temporary Cable Tower construction bring cost and duration, disassembly not only it is simple also
It is reusable, so that having good technical economic benefit and good promotion prospect.
Further, the material of the connection otic placode is identical as girder steel material.
Optionally, the connection otic placode is one or more pairs of.
Further, the center of the connection otic placode is equipped with opened round hole
Further, the diameter at the opened round hole is obtained according to the aperture value that wirerope connects.
Further, the connection otic placode is weldingly connected with the girder steel.
Further, the bottom plate of the fixed device is filled by anchor pole connection inside bolt steel box-girder, and with the jacking
It sets and is welded to connect by ribbed stiffener on Suo Hu bottom plate and the jacking apparatus.
Further, four direction is respectively provided with ribbed stiffener to the fixed device in the horizontal plane, to limit the jacking dress
Set deformation.
Further, the jacking apparatus top setting the card slot be used for limit the wirerope interlude to
Vertical or lateral deformation.
Further, the diameter of the wirerope and number are obtained according to the size of the card slot.
The additional aspect of the utility model and advantage will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be 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 according to the novel cantilever ancillary equipment assembly structure diagram of the utility model embodiment, wherein A-A is
Front view, B-B are side view；
Fig. 3 is the novel cantilever working procedure schematic diagram according to the utility model embodiment, wherein (a) is equipment installation
In place, it (b) jacks for first of wirerope, (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 embodiments of the present invention are described below in detail, the example of embodiment is shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and should not be understood as the limit to the utility model
System.
The ancillary equipment of steel box-girder cantilever construction proposed according to the utility model embodiment 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 the utility model one embodiment.
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 utility model embodiment shortens
Temporary Cable Tower is set up and the duration of cable tension in traditional cantilever, saves construction cost, while equipment making is simple, installation
Convenient disassembly meets prefabricated construction theory, and reusable, economic performance is more excellent.
Further, in one embodiment of the utility model, material and 500 phase of girder steel material of connection otic placode 100
Together.
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 utility model, the diameter of wirerope and number are according to the size of card slot
It obtains.
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 the utility model embodiment cantilever of long-span bridge steel box-girder suitable for general is constructed, especially
Be open box combination beam steel box-girder, below with reference to the utility model embodiment ancillary equipment girder steel cantilever construction method into
Row specifically describes.
(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 utility model, the card slot of the top setting of jacking apparatus 400 is for limiting
Wirerope interlude processed 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 utility model, the bottom plate of fixed device 200 passes through in bolt steel box-girder
The connection of portion's anchor pole, 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 utility model, four direction is all provided with fixed device 200 in the horizontal plane
Ribbed stiffener is set, to limit jacking apparatus deformation.
Optionally, in one embodiment of the utility model, connection otic placode 100 can be one or more pairs of, engaging lug
Plate 100 is weldingly connected with girder steel 500.
Further, in one embodiment of the utility model, the center of connection otic placode 100 is equipped with opened round hole,
The diameter at opened round hole is obtained according to the aperture value that wirerope connects.
The ancillary equipment of the utility model embodiment 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) the lower Duan Gangliang 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 utility model embodiment 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.
According to the ancillary equipment for the steel box-girder cantilever construction that the utility model embodiment proposes, by during cantilever,
Fixed drag-line is tensioned by because of the control of middle part jacking apparatus with cantilever beam both ends, is provided for steel box girder cantilever end upward
Tension 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 steel case
The stress level of beam top flange guarantees that girder steel closed up goes on smoothly, and reduces Temporary Cable Tower construction bring cost and duration,
Disassembly 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.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms 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 connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt 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 contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (6)
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, wherein the connection otic placode is weldingly connected with the girder steel, the bottom plate of the fixed device
Pass through ribbed stiffener on Suo Hu bottom plate and the jacking apparatus by anchor pole connection inside bolt steel box-girder, and with the jacking apparatus
It is welded to connect, four direction is respectively provided with ribbed stiffener to the fixed device in the horizontal plane, to limit the jacking apparatus deformation, institute
State the top setting of jacking apparatus the card slot be used to limit the wirerope interlude to vertical or lateral deformation.
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, which is characterized in that the diameter of the wirerope
It is obtained with number according to the size of the card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821575887.7U CN209397494U (en) | 2018-09-26 | 2018-09-26 | The ancillary equipment of steel box-girder cantilever construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821575887.7U CN209397494U (en) | 2018-09-26 | 2018-09-26 | The ancillary equipment of steel box-girder cantilever construction |
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| CN209397494U true CN209397494U (en) | 2019-09-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951433A (en) * | 2018-09-26 | 2018-12-07 | 清华大学 | The ancillary equipment of steel box-girder cantilever construction |
-
2018
- 2018-09-26 CN CN201821575887.7U patent/CN209397494U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951433A (en) * | 2018-09-26 | 2018-12-07 | 清华大学 | The ancillary equipment of steel box-girder cantilever construction |
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