CN209364970U - A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method - Google Patents
A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method Download PDFInfo
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- CN209364970U CN209364970U CN201821238675.XU CN201821238675U CN209364970U CN 209364970 U CN209364970 U CN 209364970U CN 201821238675 U CN201821238675 U CN 201821238675U CN 209364970 U CN209364970 U CN 209364970U
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- tensioning
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Abstract
The utility model discloses a kind of prefabricated girder segment pushing tows of long line method to take off beam tooling, including tensioning pedestal；Tensioning pedestal includes bottom plate, and bottom plate is removably attachable to the end of the side web of existing fine strain of millet section；Vertical supporting plate is fixedly connected on bottom plate, vertical supporting plate is parallel to the end face setting of prefabricated fine strain of millet section, offers multiple through-holes in vertical supporting plate；One end of support column is removably attachable to the through-hole of vertical supporting plate, and the end of the other end is fixedly connected with push plate, the parallel vertical supporting plate setting of push plate；The abutting end of adjacent prefabricated fine strain of millet section is connected separately with a tensioning pedestal, and the push plate of tensioning pedestal opposes setting in opposite directions；Thrustor is equipped between the push plate of two tensioning pedestals.Destruction is generated to beam section shear connector and corner angle when the utility model can separate (de- beam) to avoid segment, improves precast segment beam construction quality and presentation quality, bridge force-bearing is participated in for later period shear connector and reliable guarantee is provided.
Description
Technical field
The utility model relates to a kind of de- boom devices of the prefabricated girder segment of long line method, and in particular to prefabricated to a kind of long line method
Girder segment pushing tow takes off beam tooling.
Background technique
Precast segment beam length collimation method beam is to establish elongated pedestal, on pedestal more than a segment it is prefabricated as matching section
Next segment, brushing interleaving agent is as isolated material between two segment.When carrying out de- beam operation using traditional operating method,
Fully relying on gantry crane vertical tension and transverse shifting separates two segment, this operation be easy to cause shear connector between segment and
Corner angle, which generate tensile stress, under bottom plate leads to breakage, while there are larger security risks for the shaking that gantry crane generates when bale handle.
Utility model content
The utility model provides a kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method, can be in de- beam work progress
The phenomenon that offer horizontal thrust, guarantee is not in damaged shear connector, corner angle chip off-falling when taking off beam；And gantry crane is not during de- beam
Shaking can be generated, security risk is eliminated.
In order to solve the above technical problems, the technology employed by the present utility model is
A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method, including tensioning pedestal；
Tensioning pedestal includes bottom plate, and bottom plate is removably attachable to the end of the side web of existing fine strain of millet section；It is fixed on bottom plate
It is connected with vertical supporting plate, vertical supporting plate is parallel to the end face setting of prefabricated fine strain of millet section, offers in vertical supporting plate multiple logical
Hole；One end of support column is removably attachable to the through-hole of vertical supporting plate, and the end of the other end is fixedly connected with push plate, top
The parallel vertical supporting plate setting of push plate；
The abutting end of adjacent prefabricated fine strain of millet section is connected separately with a tensioning pedestal, and the push plate of tensioning pedestal is right in opposite directions
It erects and sets；Thrustor is equipped between the push plate of two tensioning pedestals.
According to above scheme, the end of the side web is equipped with interim tensioning preformed hole；The bottom plate is detachably connected
In interim tensioning preformed hole.
According to above scheme, the vertical supporting plate of the tensioning pedestal sets there are two and is oppositely arranged；Two vertical supportings
Cross-brace plate is also fixedly connected between plate.
According to above scheme, the inner side and outer side of the side web of the prefabricated fine strain of millet section is equipped with tensioning pedestal, and ipsilateral
Thrustor is equipped between two tensioning pedestals.
Compared with prior art, the utility model has the beneficial effects that beam section when can separate (de- beam) to avoid segment
Shear connector and corner angle generate destruction, improve precast segment beam construction quality and presentation quality, for later period shear connector participate in bridge by
Power provides reliable guarantee.
Detailed description of the invention
Fig. 1 is the structural schematic diagram (omitting support column and push plate) of tensioning pedestal in the utility model；
Fig. 2 is the using state structure diagram of the utility model；
Fig. 3 is the attachment structure schematic diagram of thrustor and push plate；
Fig. 4 is the cross-sectional structure schematic diagram of prefabricated fine strain of millet section；
Fig. 5 is the side cutting structural schematic diagram of prefabricated fine strain of millet section；
Structural schematic diagram when Fig. 6 is the inner side and outer side of the side web of prefabricated fine strain of millet section while being equipped with tensioning pedestal.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing, the paraphrase of each label in figure
Are as follows: bottom plate 1, fixing bolt 2, vertical supporting plate 3, through-hole 4, cross-brace plate 5, support column 6, push plate 7, thrustor 8,
Side web 9, interim tensioning preformed hole 10, tensioning pedestal 11.
The utility model includes tensioning pedestal 11.
Tensioning pedestal 11 includes bottom plate 1, and bottom plate 1 is equipped with the connection through-hole passed through for fixing bolt 2, and fixing bolt 2 is worn
The interim tensioning preformed hole 10 for being designed at 9 end of side web of existing fine strain of millet section is connected to after crossing the connection through-hole.It is fixed on bottom plate 1
It is connected with vertical supporting plate 3, vertical supporting plate 3 is parallel to the end face setting of prefabricated fine strain of millet section, offers in vertical supporting plate 3 multiple
Through-hole 4.The through-hole of vertical supporting plate 3 is connected to by nut with one end of manufactured support column 6 after finish rolling steel pipe processing screw thread
4, the end of the other end is fixedly connected with push plate 7, the setting of the parallel vertical supporting plate 3 of push plate 7.
The abutting end of adjacent prefabricated fine strain of millet section is connected separately with a tensioning pedestal 11, and the push plate 7 of tensioning pedestal 11
Opposite opposition setting.Thrustor 8 is equipped between the push plate 7 of two tensioning pedestals 11, thrustor 8 can be jack etc.
It is capable of providing the device of thrust.
The vertical supporting plate 3 of tensioning pedestal 11 sets there are two and is oppositely arranged, also fixed between two vertical supporting plates 3 to connect
Cross-brace plate 5 there are two connecing, to improve the structural strength of entire tensioning pedestal 11.
The left side side web 9 and right side side web 9 of prefabricated fine strain of millet section are equipped with interim tensioning preformed hole 10, and interim tensioning is pre-
Box out 10 inner side and outer side is equipped with tensioning pedestal 11.Two tensioning pedestals 11 in the prefabricated fine strain of millet section of adjacent two outside it
Between be equipped with a thrustor 8.Another pushing tow is equipped between two tensioning pedestals 11 of the prefabricated fine strain of millet section of adjacent two inside
Device 8.In the inner side and outer side of side web 9, the utility model is set simultaneously, it is ensured that when implementing de- beam operation, prefabricated fine strain of millet
The interior outside uniform force of section.
The working principle of the utility model are as follows:
Gantry crane gives beam section one vertical lifting force (slightly smaller than beam section weight, it is ensured that beam sections shear connector is not to be taken off first
Bear pulling force), de- beam tooling then is installed using the interim tensioning preformed hole 10 designed between existing beam section, horizontal pushing tow makes beam
Section separates.The horizontal jacking force that pushing tow tooling provides is frictional resistance in order to balance concrete and template, including frictional force and viscous
Power is tied, frictional force and cohesive force are calculated according to the following formula:
The maximum weight of the single segment of beam sections takes G=1890KN, and the lifting force of gantry crane takes T=1500KN, single to save
Remaining self weight N=T-G=390KN after section lifting.
(1) single segment residue reforms frictional force certainly: f=μ × N
μ: concrete and steel form coefficient of friction, with reference to " sleiding form engineering legislation " (GB50113-2005) P37
Page 7.2.4 item, coefficient of friction take 0.5.
(2) cohesive force between newly-laid concrete and steel form: F1=k × A
K: concrete and template cohesive force, with reference to P37 pages of " sleiding form engineering legislation " (GB50113-2005)
7.2.4 item, cohesive force take 0.5KN/m2。
A: beam sections bottom plate long 6.7m, wide 4.6m, beam sections underplate concrete and bed die contact area: A=4.6 × 6.7
=30.82 ㎡.
Pushing tow tooling provides jacking force: F >=f+F1=0.5 × 390+0.5 × 30.82=210.41KN
Horizontal thrust, which is provided, by the pushing tow tooling of beam body two sides amounts to 210.41KN, then, the level that unilateral side provides
Jacking force may make beam section to be detached from not less than 105.205KN.
When carrying out de- beam operation using the utility model, implement as follows:
(1) after the dismounting of beam body concrete side finishes while beam section reaches lifting condition, interim of side web 9 is utilized
Draw preformed hole 10 that tensioning pedestal 11 is installed.
(2) support column 6 for being welded with pushing tow steel plate 7 is penetrated into tensioning pedestal 11, and with high-strength bolt by tensioning pedestal 1 with
6 fixation of support column.
(3) when taking off beam operation, gantry crane first gives beam section one vertical lifting force identical with beam section weight to be taken off to make beam body
Stress.
(4) installation threads jack (thrustor 8) and carries out pushing tow work between the push plate 7 of two tensioning pedestals 11
Industry, until two beam sections separate and spacing is greater than 5cm (thickness of a shear connector).
(5) adjustment gantry crane position makes beam section by vertical tension, continue bale handle again and fulfil assignment.
Claims (4)
1. a kind of prefabricated girder segment pushing tow of long line method takes off beam tooling, it is characterised in that: including tensioning pedestal (11)；
Tensioning pedestal (11) includes bottom plate (1), and bottom plate (1) is removably attachable to the end of the side web (9) of existing fine strain of millet section；Bottom
It is fixedly connected on plate (1) vertical supporting plate (3), vertical supporting plate (3) is parallel to the end face setting of prefabricated fine strain of millet section, vertical supporting
Multiple through-holes (4) are offered on plate (3)；One end of support column (6) is removably attachable to the through-hole (4) of vertical supporting plate (3),
The end of the other end is fixedly connected with push plate (7), parallel vertical supporting plate (3) setting of push plate (7)；
The abutting end of adjacent prefabricated fine strain of millet section is connected separately with a tensioning pedestal (11), and the push plate of tensioning pedestal (11)
(7) opposite opposition setting；Thrustor (8) are equipped between the push plate (7) of two tensioning pedestals (11).
2. the prefabricated girder segment pushing tow of a kind of long line method according to claim 1 takes off beam tooling, it is characterised in that: the veutro
The end of plate (9) is equipped with interim tensioning preformed hole (10)；The bottom plate (1) is removably attachable to interim tensioning preformed hole
(10)。
3. the prefabricated girder segment pushing tow of a kind of long line method according to claim 1 takes off beam tooling, it is characterised in that: the tensioning
The vertical supporting plate (3) of pedestal (11) sets there are two and is oppositely arranged；Cross is also fixedly connected between two vertical supporting plates (3)
To support plate (5).
4. the prefabricated girder segment pushing tow of a kind of long line method according to claim 1 takes off beam tooling, it is characterised in that: described prefabricated
The inner side and outer side of the side web (9) of fine strain of millet section is equipped with tensioning pedestal (11), and between two ipsilateral tensioning pedestals (11)
Equipped with thrustor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821238675.XU CN209364970U (en) | 2018-08-02 | 2018-08-02 | A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821238675.XU CN209364970U (en) | 2018-08-02 | 2018-08-02 | A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method |
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| Publication Number | Publication Date |
|---|---|
| CN209364970U true CN209364970U (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821238675.XU Active CN209364970U (en) | 2018-08-02 | 2018-08-02 | A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705667A (en) * | 2018-08-02 | 2018-10-26 | 中铁四局集团有限公司 | A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method |
-
2018
- 2018-08-02 CN CN201821238675.XU patent/CN209364970U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705667A (en) * | 2018-08-02 | 2018-10-26 | 中铁四局集团有限公司 | A kind of de- beam tooling of the prefabricated girder segment pushing tow of long line method |
| CN108705667B (en) * | 2018-08-02 | 2023-12-29 | 中铁四局集团有限公司 | Precast beam segment jacking and pushing Liang Gongzhuang by long line method |
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