CN112030776A - Bridge floating-towing erection method - Google Patents
Bridge floating-towing erection method Download PDFInfo
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- CN112030776A CN112030776A CN202010863532.3A CN202010863532A CN112030776A CN 112030776 A CN112030776 A CN 112030776A CN 202010863532 A CN202010863532 A CN 202010863532A CN 112030776 A CN112030776 A CN 112030776A
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- integral beam
- tug
- integral
- erecting
- tugboat
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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
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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
Abstract
The application discloses method for erecting a floating trailer of a bridge, which belongs to the technical field of bridge construction and comprises the following steps: arranging pushing equipment and a slide way at the abutment position of the lake bank, and arranging a slide block on the slide way; assembling an integral beam with a plurality of sections above the slideway; installing a lifting support frame capable of lifting along the vertical direction on the tugboat, moving the tugboat to a first preset position in the lake, and fixing the tugboat; dropping the integral beam on the sliding block, and pushing the integral beam to the opposite bank by using pushing equipment; when the integral beam crosses the tug, the lifting support frame is lifted, and the lifting support frame is fixedly connected with the integral beam; and the limit on the tugboat is removed, and the tugboat is controlled to drive the integral beam to advance towards the lakeside on the slideway until the integral beam reaches the target position. Before this application floats and drags, the whole roof beam that waits to erect that uses slider on the slide and the last elevating support frame of tug to hang to establish carries out system conversion once, improves construction fail safe nature, and easily controls the bridge line shape.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a floating towing erection method for a bridge.
Background
In bridge construction, the construction method of bridge erection includes a cantilever erection method, a support assembly method and a pushing or pulling construction method by using a beam erection crane. The cantilever erection construction method has the defects of needing large-scale hoisting equipment or having lower positioning and assembling efficiency of components. Compared with the support splicing method, the pushing or dragging construction method reduces the number of buttresses or avoids using temporary piers, but needs to arrange a pier-side bracket, and simultaneously needs to perform system conversion once every time the steel truss beam runs for one section, namely needs to temporarily push, jack the steel truss beam, move a sliding block on a slideway backwards for one section, and then move the steel truss beam after the steel truss beam falls down. Therefore, the pushing method or the dragging construction method is directly adopted, the construction supporting facilities are various, multiple times of system conversion is needed, the operation is complex, the construction efficiency is low, and the line shape of the whole bridge is difficult to control.
Disclosure of Invention
The embodiment of the application provides a method for erecting a floating trailer of a bridge, which is characterized in that before floating, a slider on a slide way and a lifting support frame on a tugboat are used for carrying out one-time system conversion on a suspended integral beam to be erected, so that the safety and reliability of construction are improved, and the line shape of the bridge is easy to control.
The embodiment of the application provides a method for erecting a floating trailer of a bridge, which comprises the following steps:
arranging pushing equipment and a slide way at the abutment position of the lake bank, and arranging a slide block on the slide way;
assembling an integral beam with a plurality of sections above the slide way;
installing a lifting support frame capable of lifting along the vertical direction on the tugboat, moving the tugboat to a first preset position in the lake, and fixing the tugboat;
dropping the integral beam on the sliding block, and pushing the integral beam to the opposite bank by using the pushing equipment; when the integral beam crosses the tug, the lifting support frame is lifted, and the lifting support frame is fixedly connected with the integral beam;
and releasing the restriction on the tug boat, and controlling the tug boat to drive the integral beam to advance towards the lakeshore on the slide way until the integral beam reaches the target position.
In this embodiment, preferably, the step of controlling the tug boat to drive the integral beam to advance on the slideway to the lakeshore until the integral beam reaches the target position includes:
controlling the tugboat to drive the integral beam to move to a second preset position and fix the integral beam;
continuously connecting a plurality of internodes in sequence at the tail end of the integral beam, and forming a new integral beam again;
and releasing the limit on the tugboat, and continuously controlling the tugboat to drive the new integral beam to continuously advance towards the lakeside on the slideway.
Preferably, the concrete steps of fixing the tug boat are:
ship anchors are arranged on the periphery of the tugboat, and the tugboat is fixed by anchoring the ship anchors.
Preferably, after the integral beam is dropped on the sliding block and before the integral beam is pushed to the opposite bank by using the pushing device, the floating-towing erection method further includes:
and a transverse limiting device and a transverse deviation correcting device are arranged on the side of the slideway.
Preferably, after the integral beam is dropped on the sliding block and before the integral beam is pushed to the opposite bank by using the pushing device, the floating-towing erection method further includes:
and arranging a longitudinal limiting device at the abutment position, wherein the longitudinal limiting device is used for limiting the designed position of the integral beam along the bridge direction.
Preferably, the longitudinal limiting device is a longitudinal elastic limiting device.
Preferably, the concrete steps of assembling the integral beam with a plurality of internodes above the slideway are as follows:
and a beam-spanning gantry crane is used for hoisting the rod pieces on the assembly platform on the lakeshore, and the integral beam with a plurality of sections is formed by splicing the rod pieces above the slide ways in a loose splicing mode.
Preferably, if the wind power influences the fluctuation of the tugboat when the floating tugboat is erected, the movement of the tugboat is stopped, and the tail end of the integral beam is weighted so as to meet the requirement of the integral beam on anti-overturning.
Preferably, the height of the lifting support frame is lowered after the stopping of the movement of the tug.
Preferably, the integral beam is a steel truss beam or a steel box beam.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a method for erecting a bridge by floating and towing, which is characterized in that a plurality of sections are spliced on a lakeside to form an integral beam of an integral structure, a pushing device is used for pushing the integral beam to one end of the integral beam to be suspended on a lake, a towing boat with a lifting support frame is used for supporting the integral beam, the system conversion of the integral beam is realized, and then the integral beam is erected by floating and towing by controlling the traveling of the towing boat in the lake. Meanwhile, the integral beam is assembled on the lakeside in advance, the line shape of the formed integral beam can be controlled before the tugboat is used for floating and towing, the whole construction process is carried out on the shoreside, temporary buttresses do not need to be installed and dismantled on the lake/lake channel, the construction difficulty is further reduced, and the construction efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic elevation view of a floating-towing erection method of a bridge according to an embodiment of the present application during construction;
fig. 2 is a schematic plan view of a floating bridge erecting method of a bridge according to an embodiment of the present disclosure during construction;
fig. 3 is a flowchart of a method for erecting a floating trailer of a bridge according to an embodiment of the present application;
fig. 4 is a flowchart illustrating a specific process of step S5 in the embodiment of the present application;
in the figure: 1. an integral beam; 2. a slideway; 3. a slider; 4. a tug boat; 5. lifting the support frame; 6. and (4) anchoring the ship.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 3, an embodiment of the present application provides a method for erecting a floating trailer of a bridge, where the method for erecting a floating trailer includes:
step S1: arranging pushing equipment and a slide way 2 at the abutment position of the lake bank, and arranging a slide block 3 on the slide way 2;
step S2: assembling an integral beam 1 with a plurality of sections above the slide way 2;
step S3: a lifting support frame 5 capable of lifting along the vertical direction is arranged on the tugboat 4, the tugboat 4 is moved to a first preset position in a lake, and the tugboat 4 is fixed;
step S4: dropping the integral beam 1 on the sliding block 3, and pushing the integral beam 1 to the opposite bank by using the pushing equipment; when the integral beam 1 passes over the tug 4, the lifting support frame 5 is lifted, and the lifting support frame 5 is fixedly connected with the integral beam 1;
step S5: and releasing the restriction on the tug 4, and controlling the tug 4 to drive the integral beam 1 to advance towards the lakeshore on the slideway 2 until the integral beam 1 reaches the target position.
The embodiment of the application provides a floating trailer erection method of a bridge, firstly, a plurality of internodes are assembled on a lakeside to form an integral beam 1; secondly, the integral beam 1 falls on a sliding block 3 of a slideway 2, and a pushing device is used for pushing the integral beam 1 at the tail end of the integral beam 1, so that the head end of the integral beam 1 moves forwards to the surface of the lake along the bridge direction; thirdly, lifting a lifting support frame 5 on a tugboat 4 to support the lifting support frame 5 below the head end of the integral beam 1, and fixedly connecting the lifting support frame 5 with the integral beam 1, namely completing the system conversion of the integral beam 1, wherein the head end of the integral beam 1 is supported by the integral formed by the tugboat 4 and the lifting support frame 5, and the tail end of the integral beam 1 is supported by a slide block 3 on a slide way 2; and then, controlling the tugboat 4 to move forward to the other side of the lake bank to drive the integral beam 1 to move on the slide way 2 through the slide block 3 until the integral beam 1 is butted with the other side of the lake bank, and finishing the floating towing erection of the bridge to be erected.
Meanwhile, in the embodiment of the application, when the length of the bridge to be erected is short, all sections in the bridge to be erected are scattered and spliced to form the integral beam 1 for floating, towing and erecting, and in the whole bridge erecting process, the erection of the bridge to be erected can be realized only by one-time system conversion. The integral beam formed by one-time assembly can also avoid the problem that the assembly and the positioning of the subsequent unassembled rod pieces are difficult due to slight poking of the tug 4 on the lake in the later period.
The pushing equipment comprises a horizontal continuous jack and a rear anchor beam device, the tail end of the integral beam 1 is fixedly connected with the rear anchor beam device, the horizontal continuous jack is used for pushing the rear anchor beam device, and the rear anchor beam device drives the integral beam 1 to move forwards.
As shown in fig. 4, preferably, in the step S5, the step of controlling the tug 4 to drive the integral beam 1 to advance to the lakeshore on the slide way 2 until the integral beam 1 reaches the target position includes:
step S501: controlling the tug 4 to drive the integral beam 1 to move to a second preset position and fix;
step S502: continuously connecting a plurality of internodes in sequence at the tail end of the integral beam 1, and forming a new integral beam again;
step S503: the tug 4 is released from the restriction and the tug 4 is continuously controlled to drive the new integral beam to continue to advance on the slipway 2 towards the lakeside.
In this embodiment, when the length of waiting to erect the bridge is longer, can splice earlier partly internode and form an overall structure's whole roof beam, after this whole roof beam floats forward and drags a distance, fix the tug 4 once more to continue to assemble a plurality of internodes in proper order at the end of this whole roof beam, and then form a new whole roof beam, push away this new whole roof beam again, make things convenient for new whole roof beam behind the tug pull down, continue to move on slide 3 on slide 2.
Specifically, the concrete steps of fixing the tug 4 are as follows: ship anchors 6 are arranged around the tug 4, and the tug 4 is fixed by anchoring the ship anchors 6. The tug 4 is fixed by the boat anchor 6, so that the position of the tug 4 is prevented from being greatly changed, and the lifting support frame 5 on the tug 4 and the integral beam 1 on the lifting support frame 5 can be quickly and accurately butted and fixed.
And fixing the tug 4 by using a ship anchor 6, calculating a head end downwarping value when the integral beam 1 is in a cantilever state, and adjusting the height of the lifting support frame 5 so that the lifting support frame 5 supports the head end of the integral beam 1.
As a preferable scheme of the embodiment of the present application, after the integral beam 1 is dropped on the slide block 3, before the integral beam 1 is pushed to the opposite bank by using the pushing device, the floating-towing erection method further includes: and a transverse limiting device and a transverse deviation correcting device are arranged on the side of the slideway 2. The transverse limiting device and the transverse deviation correcting device are arranged on two sides of the slide way 2, wherein the transverse limiting device limits the positions of two sides of the integral beam 1, and when the deviation position of a jack in the transverse deviation correcting device on the integral beam 1 is too large, the integral beam 1 is adjusted to return to the design position. Therefore, the transverse limiting device and the transverse deviation correcting device are used for providing a clear moving track for the sliding integral beam 1, and the integral beam 1 on the slide way 2 is prevented from being deviated when moving to the other side of the lakeshore, so that the error is overlarge when the lakeshore is butted, and the erection efficiency is influenced. The transverse limiting device and the transverse deviation correcting device are conventional technical means of those skilled in the art, and are not described in detail herein.
Preferably, after the integral beam 1 is dropped on the slide block 3 and before the integral beam 1 is pushed to the opposite bank by using the pushing device, the floating-towing erection method further includes: and arranging a longitudinal limiting device at the abutment position, wherein the longitudinal limiting device is used for limiting the design position of the integral beam 1 along the bridge direction. Specifically, the longitudinal limiting device is a longitudinal elastic limiting device, and the longitudinal elastic limiting device needs to ensure that the elastic deformation is smaller than the allowable range of the bridge mileage deviation.
In the embodiment of the application, when the integral beam 1 is driven by the tug 4 to move to the other side of the lakeshore, and when the tug 4 stops moving forwards, the integral beam 1 has large mass and inertia, and still can move forwards under the action of the inertia, so that the longitudinal limiting device is arranged, the integral beam 1 can be effectively prevented from moving forwards beyond necessary limit, and the bridge erection safety is ensured. Meanwhile, the elastic longitudinal limiting device can buffer the forward impact force of the integral beam 1 in time, and the safety of bridge erection is further improved.
Preferably, the concrete steps of assembling the integral beam 1 with a plurality of internodes above the slideway 2 are as follows: and a beam-spanning gantry crane is used for lifting a rod piece on an assembly platform on the lakeshore, and the integral beam 1 with a plurality of internodes is formed by splicing the rod pieces above the slide way 2 in a loose manner. Compared with the method of hoisting on a lake, the method has the advantages that the beam-spanning gantry crane is used for splicing the rod pieces on the lakeside, so that the installation difficulty is lower and the method is safer.
Preferably, if the wind force affects the fluctuation of the tugboat 4 when the floating tugboat is erected, the movement of the tugboat 4 is stopped, and the weight is applied to the tail end of the integral beam 1 so as to meet the requirement of the integral beam 1 on anti-overturning. And lowering the height of the lifting support frame 5 after the stopping of the movement of the tug 4. The embodiment of the application can avoid the fluctuation of the integral beam 1 caused by the fluctuation of the tug. Namely, when the tug boat 4 is greatly rocked due to the influence of wind power when the floating tug is erected, the tug boat is stopped to move. Simultaneously, the tug that mentions in this application is the tug that self has power device.
Preferably, the integral beam is a steel truss beam or a steel box beam.
The embodiment of the application is suitable for still water lakes or lake channels with influence of lake water flow velocity being ignored, and dragging of the integral beam is also carried out under the condition of no wind waves.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The method for erecting the floating trailer of the bridge is characterized by comprising the following steps:
arranging pushing equipment and a slide way (2) at the bridge abutment position of the lake bank, and arranging a slide block (3) on the slide way (2);
assembling an integral beam (1) with a plurality of sections above the slide way (2);
a lifting support frame (5) capable of lifting along the vertical direction is arranged on the tugboat (4), the tugboat (4) is moved to a first preset position in a lake, and the tugboat (4) is fixed;
the integral beam (1) is dropped on the sliding block (3), and the pushing equipment is used for pushing the integral beam (1) to the opposite bank; when the integral beam (1) crosses the tug (4), the lifting support frame (5) is lifted, and the lifting support frame (5) is fixedly connected with the integral beam (1);
and releasing the restriction on the tug boat (4), and controlling the tug boat (4) to drive the integral beam (1) to advance towards the lakeshore on the slideway (2) until the integral beam (1) reaches the target position.
2. The method for erecting a floating trailer for a bridge according to claim 1, wherein the step of controlling the tug (4) to drive the integral beam (1) to advance towards the lakeside on the slideway (2) until the integral beam (1) reaches the target position comprises the steps of:
controlling the tug (4) to drive the integral beam (1) to move to a second preset position and fix the integral beam;
continuously connecting a plurality of internodes in sequence at the tail end of the integral beam (1) and forming a new integral beam again;
and (4) releasing the restriction on the tug boat (4), and continuously controlling the tug boat (4) to drive a new integral beam to continuously advance towards the lake bank on the slideway (2).
3. The method for erecting a floating trailer for a bridge according to claim 1, wherein the concrete steps of fixing said tug (4) are:
ship anchors (6) are arranged on the periphery of the tug (4), and the tug (4) is fixed by anchoring the ship anchors (6).
4. The method for erecting a floating trailer for a bridge according to claim 1, wherein after said dropping said monolithic beam (1) on said sliding block (3), before said pushing said monolithic beam (1) to the opposite bank using said pushing device, said method further comprises:
and a transverse limiting device and a transverse deviation correcting device are arranged on the side of the slideway (2).
5. The method for erecting a floating trailer for a bridge according to claim 1, wherein after said dropping said monolithic beam (1) on said sliding block (3), before said pushing said monolithic beam (1) to the opposite bank using said pushing device, said method further comprises:
and a longitudinal limiting device is arranged at the abutment and used for limiting the design position of the integral beam (1) along the bridge direction.
6. The method for erecting a floating trailer for a bridge according to claim 5, wherein said longitudinal position-limiting means is a longitudinal elastic position-limiting means.
7. The method for erecting the floating trailer of the bridge according to claim 1, wherein the concrete steps of assembling the integral beam (1) with a plurality of internodes above the slideway (2) are as follows:
and a beam-spanning gantry crane hoisting rod piece is used for an assembly platform on the lakeshore, and an integral beam (1) with a plurality of sections is formed by splicing above the slide way (2) in a loose assembly mode.
8. The method for erecting a floating trailer for a bridge according to claim 1, wherein if the wind force affects the fluctuation of the tug (4) during the erection of the floating trailer, the movement of the tug (4) is stopped and the end of the integral beam (1) is weighted to meet the requirement of the integral beam (1) for anti-overturning.
9. A method for erecting a floating bridge according to claim 8, wherein the height of said lifting jack (5) is lowered after said stopping of the movement of said tug (4).
10. The method for erecting a floating trailer for a bridge according to claim 1, wherein said integral girder is a steel truss girder or a steel box girder.
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| CN202010863532.3A CN112030776A (en) | 2020-08-25 | 2020-08-25 | Bridge floating-towing erection method |
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| CN202010863532.3A CN112030776A (en) | 2020-08-25 | 2020-08-25 | Bridge floating-towing erection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796218A (en) * | 2021-01-05 | 2021-05-14 | 中铁四局集团有限公司 | Steel box girder sliding deviation correcting system |
| CN113026560A (en) * | 2021-02-26 | 2021-06-25 | 江苏雷威建设工程有限公司 | Large-span steel truss girder erection method |
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| CN112796218A (en) * | 2021-01-05 | 2021-05-14 | 中铁四局集团有限公司 | Steel box girder sliding deviation correcting system |
| CN113026560A (en) * | 2021-02-26 | 2021-06-25 | 江苏雷威建设工程有限公司 | Large-span steel truss girder erection method |
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