CN104278633A - Bridge jacking guide and correction device and construction method - Google Patents
Bridge jacking guide and correction device and construction method Download PDFInfo
- Publication number
- CN104278633A CN104278633A CN201310291789.6A CN201310291789A CN104278633A CN 104278633 A CN104278633 A CN 104278633A CN 201310291789 A CN201310291789 A CN 201310291789A CN 104278633 A CN104278633 A CN 104278633A
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- Prior art keywords
- guide runner
- beam body
- bridge
- deviation correcting
- correcting device
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
Abstract
The invention relates to the field of bridge construction and discloses a bridge jacking guide and correction device. The device comprises a slideway box, a plurality of guide sliders in different thicknesses and a support; one end of the support is fixed to a bridge pier, and the other end of the support is provided with an adjusting device; the adjusting device is connected with the slideway box; the support supports the slideway box and the guide sliders through the adjusting device; the slideway box comprises a guide sliding plate and two slider limiting plates; the guide sliding plate is a steel plate parallel to the beam body jacking direction; the slider limiting plates are arranged on two sides of the guide sliding plate along the beam body jacking direction; one side of each guide slider is arranged on the guide sliding plate, and the other side of each guide slider is in contact with a beam body. The sliders are adopted for guiding and correcting, and are large in contact areas with the beam body, can be simultaneously suitable for steel beams and concrete beams, and can act on a steel beam web. Meanwhile, the device is simple in structure and convenient to operate, can be repeatedly used, and is wide in application range for jacking construction. The invention also provides a construction method for the bridge jacking guide and correction device.
Description
Technical field
The present invention relates to field of bridge construction, particularly relate to a kind of bridge incremental launching guiding and deviation correcting device and construction method.
Background technology
In bridge incremental launching construction, in order to ensure that bridge advances along predetermined pushing tow route, need to arrange guiding device to guide the advance track of bridge.When girder lateral deviation pushing tow route is larger, deviation correcting device need be adopted to get back on predetermined pushing tow route to make bridge.
In actual incremental launching construction, usually adopt fixed idler whell as stopping means, be fixed on planned course both lateral sides by roller, roller is relative with girder longitudinal direction to roll, horizontal then limit the skew of girder.When the horizontal off normal of girder is larger, then the direct top lifting of the jack of horizontally set is utilized to carry out dynamic correcting to girder.In theory, pushing tow design advance track is continuous print, arranges that stopping means can ensure that pushing tow girder advances along planned course, can not depart from, namely not need deviation correcting device completely along planned course line both sides continuously.
In Practical Project, because pushing tow all carries out on Temporary Piers, Temporary Piers is discontinuous to be dispersed in design pushing tow trajectory, and spacing deviation correcting device is also placed on Temporary Piers, the continuous lines of relative pushing tow track its be then the form of point.Pushing tow process is due to the lack of uniformity of multiple stage jack power, and pushing tow girder is the snakelike advance of twisting, so cannot ensure that, when pushing tow girder front end arrives limit point, just contact with stopping means, stopping means function is by desirable operation.When Temporary Piers spacing is larger, difference of them may be larger, even may occur the phenomenon of the advance of stopping means jam pushing tow girder.
In Practical Project, when adopting jack correction to girder, need to settle slide plate between correction jack and pushing tow girder, to reduce friction therebetween, the jacking speed of jack is less than girder pushing tow advanced speed simultaneously, and top journey is limited, due to correction need in girder pushing tow process dynamic correcting, when reaching the maximum top journey of jack, need to stop girder pushing tow, jack oil return also adjusts position, then restarts girder pushing tow.The operating personnel done often are in a rush, are but difficult to reach actual desirable effect.
In actual pushing tow process, spacingly often synchronously to hocket with correction, will being converted to spacing when designed path is got back in correction, in spacing process, will correction being enabled more greatly as departed from, and frequently change two kinds of equipment the continuity of pushing tow must be made greatly to reduce.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide a kind of the bridge incremental launching guiding and the deviation correcting device that integrate guiding and deviation-correcting function.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides bridge incremental launching guiding and deviation correcting device, it comprises slide housing, the guide runner of polylith different-thickness and support; One end of described support is fixed on bridge pier, and its other end is provided with adjusting device; Described adjusting device is connected with described slide housing, and described support supports described slide housing and guide runner by described adjusting device; Described slide housing comprises blade fin and two pieces of slide block limiting plates, and described blade fin is the steel plate being parallel to beam body pushing tow direction; Described slide block limiting plate is arranged on described blade fin both sides along beam body pushing tow direction; Described guide runner one side is placed on described blade fin, and another side contacts with beam body.
Wherein, described slide housing also comprises smooth steel plate, and described smooth steel plate is laid between described blade fin and described guide runner.
Wherein, the one side that described guide runner contacts with described smooth steel plate is shiny surface, and the one side contacted with beam body is matsurface.
Wherein, described polylith guide runner is one group with identical two pieces of thickness, and the thickness difference between adjacent thickness group is not more than 2mm.
Wherein, described adjusting device is made up of screw mandrel and adjusting bolt; Described screw mandrel is installed on the bracket, and its top there is not the lower end of plate to be connected by set bolt with guiding, and described adjusting bolt is arranged on described screw mandrel.
Wherein, described guide runner is politef slide block.
Wherein, the front end of described guide runner is provided with the wedge slope of 1/30 ~ 1/15.
The present invention also provides the construction method of bridge incremental launching guiding and deviation correcting device, it is characterized in that, comprises the following steps:
S1: support is fixed on bridge pier, by slide housing screw mandrel and set bolt rack-mount, adjusting bolt installed by screw mandrel;
S2: adjustment adjusting bolt raises or reduces screw mandrel, makes the blade fin of slide housing and beam body have the distance and gap putting into suitable guide runner;
S3: select the suitable guide runner of thickness to put into slide housing, smears sliding agent between the contact surface of guide runner and slide housing; Feed guide runner continuously when pushing tow advances, and ensure that being directed to slide block between beam body and blade fin fills up;
S4: when laterally offset is comparatively large, change to thicker guide runner in side, offset direction, utilize the wedge slope of guide runner front end gradually contract enter to realize correction.
Wherein, further comprising the steps of:
S5: when beam body pushing tow goes out guiding and deviation correcting device, detaching device, moves to the next bridge pier needed, repeats S1 ~ S4.
(3) beneficial effect
Bridge incremental launching provided by the invention guiding and deviation correcting device, it comprises slide housing, the guide runner of polylith different-thickness and support; One end of support is fixed on bridge pier, and its other end is provided with adjusting device; Adjusting device is connected with slide housing, and support is by adjusting device supporting skid rail box and guide runner; Slide housing comprises blade fin and two pieces of slide block limiting plates, and blade fin is the steel plate being parallel to beam body pushing tow direction; Slide block limiting plate is arranged on blade fin both sides along beam body pushing tow direction; Guide runner one side is placed on blade fin, and another side contacts with beam body.Slide block is adopted to carry out leading and rectifying a deviation, long-pending large with beam contact level, girder steel and concrete beam can be suitable for simultaneously, steel beam web plate position can be acted on.Meanwhile, device simple structure, operation is convenient, reusable, has applicability widely for incremental launching construction.
Accompanying drawing explanation
Fig. 1 is half cut-away view of bridge incremental launching of the present invention guiding and deviation correcting device;
Fig. 2 is the slide housing top view of bridge incremental launching of the present invention guiding and deviation correcting device;
Fig. 3 is the slide housing side cut-away view of bridge incremental launching of the present invention guiding and deviation correcting device;
In figure, 1: support; 2: screw mandrel; 3: adjusting bolt; 4: set bolt; 5: blade fin; 6: smooth steel plate; 7: slide block limiting plate; 8: guide runner; 9: Liang Ti; 10: adjusting device; 20: slide housing.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following instance for illustration of the present invention, but is not used for limiting the scope of the invention.
As shown in Figures 1 to 3, bridge incremental launching guiding of the present invention and deviation correcting device, it comprises slide housing 20, polylith guide runner 8 and support 1, and one end of described support 1 is fixed on bridge pier, and its other end is provided with adjusting device 10; Described adjusting device 10 is connected with described slide housing 20, and described support 1 supports described slide housing 20 and guide runner 8 by described adjusting device 10; Described slide housing 20 comprises blade fin 5 and two pieces of slide block limiting plates 7, and described blade fin 5 is for being parallel to the steel plate in beam body 9 pushing tow direction; Described slide block limiting plate 7 is arranged on described blade fin 5 both sides along beam body 9 pushing tow direction; Described guide runner 8 one side is placed on described blade fin 5, and another side contacts with beam body 9.
In the middle of work progress, blade fin 5 supports guide runner 8 and transmits lateral pressure to support 1, and two pieces of slide block limiting plates 7 form a rail groove, ensures that guide runner 8 only moves in the direction of pushing tow.Adjusting device 10 is for the coarse adjustment of pushing tow, and can cross polylith guide runner 8 and carry out pushing tow fine setting, coarse adjustment and fine setting combine, and improve and regulate Efficiency and accuracy.
Further, in order to the effect reduced friction, described slide housing 20 also comprises smooth steel plate 6, and described smooth steel plate 6 is laid between described blade fin 5 and described guide runner 8.And the one side that described guide runner 8 contacts with described smooth steel plate 6 is shiny surface, and the one side contacted with beam body 9 is matsurface.
Further, described guide runner 8 selects politef slide block.Described polylith guide runner 8 is one group with identical two pieces of thickness, and the thickness difference between adjacent thickness group is not more than 2mm.Meanwhile, the front end of guide runner 8 is provided with the wedge slope of 1/30 ~ 1/15; Preferably, the gradient on wedge slope selects 1:20.The guide runner 8 of same thickness is two pieces, with meet pushing tow in stable condition time replace requirement.Process wedge slope in the front end of guide runner 8, be convenient to feed.
Further, described adjusting device 10 is made up of screw mandrel 2 and adjusting bolt 3; Described screw mandrel 2 is arranged on described support 1, and its top is connected by set bolt 4 with the lower end of slide housing 20, and described adjusting bolt 3 is arranged on described screw mandrel.Before pushing tow, adjusted the distance of slide housing 20 and beam body 9 by adjusting device 10, so that correction during pushing tow, the regulated quantity of adjusting device 10 is comparatively large, for coarse adjustment, overcomes the defect of guide runner 8 regulated quantity deficiency.Thickness difference between the adjacent thickness group of guide runner 8 is 2mm, and guide runner 8, for the accurate adjustment in pushing tow process, ensures to rectify a deviation continuously in pushing tow process, can not interrupt top heap.
The present invention also provides the construction method of bridge incremental launching guiding and deviation correcting device, comprises the following steps:
(1) support 1 is fixed on bridge pier, by slide housing 20 with screw mandrel 2 and set bolt 4 rack-mount, screw mandrel 2 is installed adjusting bolt 3.Bridge pier can bridge pier temporarily, and also can be permanent bridge pier, multiple support 1 be arranged side by side.
(2) adjust adjusting bolt 3 raise or reduce screw mandrel 2, make the blade fin 5 of slide housing 20 have with beam body 9 distance and gap of putting into suitable guide runner 8.When beam body 9 is curve, should reset before each segmentation pushing tow.
(3) select the suitable guide runner 8 of thickness to put into slide housing 20, between the contact surface of guide runner 8 and slide housing 20, smear sliding agent; Feed guide runner 8 continuously when pushing tow advances, and ensure that being directed to slide block 8 between beam body 9 and blade fin 5 fills up.
(4) when laterally offset is comparatively large, change to thicker guide runner 8 in side, offset direction, utilize the wedge slope of guide runner 8 front end gradually contract enter to realize correction.During continuous correction, the slide block thickness of feeding must increase progressively step by step, and not allowing to skip a grade increases slide block thickness.
(5) when beam body 9 pushing tow goes out guiding and deviation correcting device, detaching device, moves to the next bridge pier needed, repeats S1 ~ S4.
Bridge incremental launching guiding of the present invention and deviation correcting device integrate guiding and deviation-correcting function, by the collaborative work of some this devices of cover, guide effect can be kept when lasting big displacement quantity pushing tow, and occurring that larger side is rectified a deviation to during skew, ensure that carrying out smoothly of pushing tow.Slide block is adopted to carry out leading and rectifying a deviation, long-pending large with beam contact level, girder steel and concrete beam can be suitable for simultaneously, steel beam web plate position can be acted on.Meanwhile, device simple structure, operation is convenient, reusable, has applicability widely for incremental launching construction.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. bridge incremental launching guiding and a deviation correcting device, it is characterized in that, it comprises slide housing, polylith guide runner and support;
One end of described support is fixed on bridge pier, and its other end is provided with adjusting device; Described adjusting device is connected with described slide housing, and described support supports described slide housing and guide runner by described adjusting device;
Described slide housing comprises blade fin and two pieces of slide block limiting plates, and described blade fin is the steel plate being parallel to beam body pushing tow direction; Described slide block limiting plate is arranged on described blade fin both sides along beam body pushing tow direction;
Described guide runner one side is placed on described blade fin, and another side contacts with beam body.
2. bridge incremental launching guiding as claimed in claim 1 and deviation correcting device, it is characterized in that, described slide housing also comprises smooth steel plate, and described smooth steel plate is laid between described blade fin and described guide runner.
3. bridge incremental launching guiding as claimed in claim 2 and deviation correcting device, it is characterized in that, the one side that described guide runner contacts with described smooth steel plate is shiny surface, and the one side contacted with beam body is matsurface.
4. bridge incremental launching guiding as claimed in claim 1 and deviation correcting device, is characterized in that, described polylith guide runner is one group with identical two pieces of thickness, and the thickness difference between adjacent thickness group is not more than 2mm.
5. the bridge incremental launching guiding as described in claim 1 or 4 and deviation correcting device, it is characterized in that, described adjusting device is made up of screw mandrel and adjusting bolt; Described screw mandrel is installed on the bracket, and its top there is not the lower end of plate to be connected by set bolt with guiding, and described adjusting bolt is arranged on described screw mandrel.
6. the bridge incremental launching guiding as described in claim 1 or 4 and deviation correcting device, it is characterized in that, described guide runner is politef slide block.
7. the bridge incremental launching guiding as described in claim 1 or 4 and deviation correcting device, it is characterized in that, the front end of described guide runner is provided with the wedge slope of 1/30 ~ 1/15.
8. a construction method for bridge incremental launching guiding and deviation correcting device, is characterized in that, comprise the following steps:
S1: support is fixed on bridge pier, by slide housing screw mandrel and set bolt rack-mount, adjusting bolt installed by screw mandrel;
S2: adjustment adjusting bolt raises or reduces screw mandrel, makes the blade fin of slide housing and beam body have the distance and gap putting into suitable guide runner;
S3: select the suitable guide runner of thickness to put into slide housing, smears sliding agent between the contact surface of guide runner and slide housing; Feed guide runner continuously when pushing tow advances, and ensure that being directed to slide block between beam body and blade fin fills up;
S4: when laterally offset is comparatively large, change to thicker guide runner in side, offset direction, utilize the wedge slope of guide runner front end gradually contract enter to realize correction.
9. the construction method of bridge incremental launching guiding as claimed in claim 7 and deviation correcting device, is characterized in that, further comprising the steps of:
S5: when beam body pushing tow goes out guiding and deviation correcting device, detaching device, moves to the next bridge pier needed, repeats S1 ~ S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291789.6A CN104278633B (en) | 2013-07-11 | 2013-07-11 | Bridge incremental launching guides and deviation correcting device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291789.6A CN104278633B (en) | 2013-07-11 | 2013-07-11 | Bridge incremental launching guides and deviation correcting device and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN104278633A true CN104278633A (en) | 2015-01-14 |
| CN104278633B CN104278633B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310291789.6A Active CN104278633B (en) | 2013-07-11 | 2013-07-11 | Bridge incremental launching guides and deviation correcting device and construction method |
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Cited By (3)
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| CN105179904A (en) * | 2015-10-12 | 2015-12-23 | 中铁四局集团有限公司 | Forced lubrication device and method for sliding block for pushing |
| CN108360385A (en) * | 2018-03-03 | 2018-08-03 | 中交第二航务工程局有限公司 | A kind of steel box-girder lifting limiting buffer construction method |
| CN114134811A (en) * | 2021-10-19 | 2022-03-04 | 中铁二十五局集团第二工程有限公司 | Steel truss girder dragging frame and bridge steel truss girder erecting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108360385A (en) * | 2018-03-03 | 2018-08-03 | 中交第二航务工程局有限公司 | A kind of steel box-girder lifting limiting buffer construction method |
| CN114134811A (en) * | 2021-10-19 | 2022-03-04 | 中铁二十五局集团第二工程有限公司 | Steel truss girder dragging frame and bridge steel truss girder erecting method |
| CN114134811B (en) * | 2021-10-19 | 2024-03-08 | 中铁二十五局集团第二工程有限公司 | Steel truss girder traction frame and erection method of steel truss girder for bridge |
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| Publication number | Publication date |
|---|---|
| CN104278633B (en) | 2016-08-24 |
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