CN113005917A - Prefabricated box girder widening equipment and erecting method thereof - Google Patents
Prefabricated box girder widening equipment and erecting method thereof Download PDFInfo
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- CN113005917A CN113005917A CN202110315221.8A CN202110315221A CN113005917A CN 113005917 A CN113005917 A CN 113005917A CN 202110315221 A CN202110315221 A CN 202110315221A CN 113005917 A CN113005917 A CN 113005917A
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- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 5
- 241001669679 Eleotris Species 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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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
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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
- E01D19/00—Structural or constructional details of bridges
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
本发明公开了一种预制箱梁拼宽设备及其架设方法，包括架桥机、运梁车，所述架桥机包括连接横梁、两个主横梁、天车以及若干主支腿，所述天车传动连接在主横梁上，所述连接横梁固定连接在两个天车之间，所述主支腿固定连接在横梁底部，所述运梁车顶部可拆卸连接有托运立柱，所述托运立柱顶部与主横梁抵接；所述托运立柱顶部与架桥机连接后将架桥机顶起，运梁车带动架桥机在桥面运动，本发明为拼宽梁安全、快速的架设提供一种新的方法，避免了之前的架设速度慢，难度大、现场需要监控人员多，且稳定性难以保障的问题。
The invention discloses a prefabricated box girder width splicing equipment and its erection method, comprising a bridge erecting machine and a girder transporting vehicle. The bridge erecting machine includes a connecting beam, two main beams, a crane and several main legs. The crane is connected to the main beam, the connecting beam is fixedly connected between the two cranes, the main leg is fixedly connected to the bottom of the beam, and the top of the beam transporter is detachably connected with a consignment column. The top of the column is in contact with the main beam; the top of the consignment column is connected with the bridge erection machine, and then the bridge erection machine is jacked up, and the beam transport vehicle drives the bridge erection machine to move on the bridge deck. A new method avoids the previous problems of slow erection, great difficulty, many monitoring personnel on site, and difficult to guarantee stability.
Description
Technical Field
The invention relates to the technical field of bridge engineering construction, in particular to prefabricated box girder widening equipment and an erection method thereof.
Background
Along with the economic high-speed development of China, a highway network is spread all over the country, a highway bridge serves as a main measure for crossing ditches and rivers and becomes the central importance of the development of the highway, particularly, in the process of building high-grade highways across sea and coastal areas, a large-tonnage large-span precast box girder erection technology is widely applied, a highway ramp serves as a necessary project of a main road, the erection of a ramp width splicing beam serves as a key control point of the whole project, and the conventional methods mainly comprise the following steps.
1: the method has high requirement on foundation treatment, requires a large amount of manpower and large-area erection of a scaffold, simultaneously needs a small-tonnage crane to be matched with a hoisting template, and carries out on-site casting of the box girder after the inner template and the outer template are placed on the scaffold; the method has long construction period, needs a large amount of personnel and equipment, causes cross operation and brings great safety problem; in addition, the method needs enough supporting positions at the lower part, and particularly for the construction of high-grade highways in special environments such as coastal and cross-sea environments, the method is difficult to realize.
2: a fixed support platform erecting and beam transferring method for abutment erection is characterized in that a fixed beam erecting platform is erected by embedding a steel bar structural member at each beam erecting abutment position and utilizing the modes of pier pre-embedded support and manual scaffold erecting, but each abutment platform is erected; although the method reduces the workload of manually erecting a scaffold in a large area by using the cast-in-place beam to a certain extent, the fixed beam moving platform erected at the abutment position still needs manual erection and crane cooperation.
3: a sleeper beam is erected at the upper part of a bridge pier of the width splicing section, a beam moving trolley is installed on the sleeper beam, and after a beam piece is erected on the beam moving trolley, the beam moving trolley slides along the sleeper beam under the thrust action of a jack, so that the width splicing beam is erected. Although the method is improved to a certain extent compared with the first two methods, the precision requirement is high in the process of installing the slideway and transversely moving the beam piece, the erection speed is low, a large number of monitoring personnel are needed on site, and the stability is difficult to guarantee.
Disclosure of Invention
The invention aims to provide a width splicing device for a prefabricated box girder and an erection method thereof, provides a new method for safely and quickly erecting the width splicing girder, and solves the problems that the existing erection speed is low, the difficulty is high, a large number of monitoring personnel are needed on site, and the stability is difficult to guarantee.
In order to achieve the purpose, the invention provides the following technical scheme:
a width splicing device for a prefabricated box girder comprises a bridge girder erection machine and a girder transporting vehicle; the bridge girder erection machine comprises a connecting beam, two main beams, a crown block and a plurality of main supporting legs; the overhead traveling crane transmission is connected on the main beam and is removed along the main beam, connect crossbeam fixed connection between two overhead traveling cranes, main leg fixed connection is in the crossbeam bottom, delivery truck top can be dismantled and be connected with the delivery stand, behind delivery stand top and the main beam butt, after being connected with the bridging machine, the delivery stand top will jack up the bridging machine, and the girder transport car drives the bridging machine and moves at the bridge floor.
Furthermore, the consignment upright post is of a telescopic structure.
Furthermore, the bottom of the main cross beam is fixedly connected with a plurality of side legs.
Furthermore, the bottom of each side leg is detachably connected with a pressure reducing plate.
Further, the pressure reducing plate is a cylinder or a polygonal body with the diameter not smaller than that of the side leg.
An erection method of prefabricated box girder widening equipment comprises the following steps:
s1: assembling: after the bridge girder erection machine is assembled, the main supporting legs are supported on the bridge floor, and the side supporting legs are respectively supported on the assembled wide side bridge piers;
s2: erecting a beam: placing the beam pieces on a beam transporting vehicle, transporting the beam pieces to the lower part of a bridge girder erection machine by the beam transporting vehicle, adjusting the positions of the beam pieces to the bottom of a crown block, synchronously lifting the beam by the crown block, moving the crown block along a main cross beam, moving the beam pieces to the upper part of a width splicing section of a pier, and slowly dropping the beam to complete erection of the first beam piece;
s3: repeating the step S2 to finish the erection of the whole hole beam; then, erecting the next span spliced wide beam;
s4: moving the machine: moving the bridge girder erection machine, installing the consignment upright column on the girder transport vehicle, extending the consignment upright column, enabling the top of the consignment upright column to prop against the main cross beam, jacking the bridge girder erection machine away from the bridge floor, retracting the front side leg and the rear side leg, and moving the bridge girder erection machine forwards to the next span by the girder transport vehicle;
s5: repeating beam erecting: and after the bridge girder erection machine is moved to a preset position, the girder transportation vehicle folds up the consignment upright post, transfers the bridge girder erection machine and is installed in place, in order to avoid damaging the bridge floor, a pressure reducing plate is fixed at the bottom of the side leg above the bridge floor and is supported on the bridge floor, the rest legs are supported above the bridge piers, the steps S1-S3 of erecting the bridge girder erection machine are repeated, and the erection of the rest split width girders is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. the novel erection method designs a brand-new wide beam splicing bridge girder erection machine, the bridge girder erection machine is combined with a beam transporting trolley, the beam transporting trolley can move by self, the equipment is fast in position, the preparation work before the construction of the traditional bridge girder erection machine is greatly reduced, and the time is saved.
2. Compared with the traditional bridge erecting machine, the girder lifting mode of the invention is that the girder transporting crown block can transversely move the precast beam pieces to the width splicing sections through the lengthened main beam to realize the erection of the width splicing girders.
3. The invention does not need the cooperation of auxiliary operation and other hoisting equipment in the whole girder erecting process, all the matched equipment can be repeatedly used, the defect of manpower investment in the traditional construction method is overcome, and the maximization of the economy of erecting the ramp width splicing girder is realized.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
As shown in figure 1 of the drawings,
a prefabricated box girder widening device comprises a bridge girder erection machine 1 and a girder transporting vehicle 2, wherein the bridge girder erection machine 1 comprises a connecting cross beam 13, two main cross beams 11, a crown block 12 and a plurality of main supporting legs 14; the crown block 12 is connected to the main beam 11 in a transmission manner, moves along the main beam 11 and moves linearly along the main beam 11; connect 13 fixed connection of crossbeam between two overhead traveling cranes 12, 14 fixed connection of main landing leg is in 13 bottoms of crossbeam, 2 tops of fortune roof beam car can be dismantled and be connected with delivery stand 21, after 21 tops of delivery stand and 11 bottoms butts of main crossbeam, will erect bridge crane 1 jack-up after 21 tops of delivery stand are connected with bridging crane 1, and fortune roof beam car 2 drives bridging crane 1 and moves at the bridge floor.
In this embodiment, the shipping column 21 is a retractable structure, and a hydraulic retractable rod can be used.
In this embodiment, the bottom of the main beam 11 is further fixedly connected with a plurality of side legs 6, and the side legs 6 are located above the bridge pier 5.
In this embodiment, the bottom of the side leg 6 is detachably connected with a pressure reducing plate 61.
In this embodiment, the pressure reducing plate 61 is a cylinder or a polygon having a diameter not smaller than the diameter of the side leg 6, so as to prevent the side leg 6 from damaging the top surface of the bridge deck 3 or the pier 5.
An erection method of prefabricated box girder widening equipment comprises the following steps:
s1: assembling: after the bridge girder erection machine is assembled, the main supporting legs are supported on the bridge floor, and the side supporting legs are respectively supported on the assembled wide side bridge piers;
s2: erecting a beam: placing the beam pieces on a beam transporting vehicle, transporting the beam pieces to the lower part of a bridge girder erection machine by the beam transporting vehicle, adjusting the positions of the beam pieces to the bottom of a crown block, synchronously lifting the beam by the crown block, moving the crown block along a main cross beam after the beam pieces are lifted to a preset position, moving the beam pieces to the upper part of a width splicing section of a pier, and slowly dropping the beam to complete erection of the first beam piece;
s3: repeating the step S2 to finish the erection of the whole hole beam; then, erecting the next span spliced wide beam;
s4: moving the machine: moving the bridge girder erection machine, installing the consignment upright column on the girder transport vehicle, propping the main cross beam through the top of the consignment upright column, jacking the bridge girder erection machine away from the bridge floor, retracting the front side leg and the rear side leg, and moving the bridge girder erection machine forward to the next span by the girder transport vehicle;
s5: repeating beam erecting: and after the bridge girder erection machine is moved to a preset position, the girder transportation vehicle folds up the consignment upright post, transfers the bridge girder erection machine and is installed in place, in order to avoid damaging the bridge floor, a pressure reducing plate is fixed at the bottom of the side leg above the bridge floor and is supported on the bridge floor, the rest legs are supported above the bridge piers, the steps S1-S3 of erecting the bridge girder erection machine are repeated, and the erection of the rest split width girders is completed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A width splicing device for precast box girders is characterized by comprising a bridge girder erection machine and a girder transporting vehicle; the bridge girder erection machine comprises a connecting beam, two main beams, a crown block and a plurality of main supporting legs; the overhead traveling crane transmission is connected on the main beam and is removed along the main beam, connect crossbeam fixed connection between two overhead traveling cranes, main leg fixed connection is in the crossbeam bottom, delivery truck top can be dismantled and be connected with the delivery stand, behind delivery stand top and the main beam butt, after being connected with the bridging machine, the delivery stand top will jack up the bridging machine, and the girder transport car drives the bridging machine and moves at the bridge floor.
2. The precast box girder widening device according to claim 1, wherein the shipping column is of a telescopic structure.
3. The precast box girder widening device according to claim 1, wherein a plurality of side legs are fixedly connected to the bottom of the main cross beam.
4. The precast box girder widening device according to claim 3, wherein a pressure reducing plate is detachably connected to the bottom of each side leg.
5. The precast box girder widening device according to claim 3, wherein the decompression plate is a cylinder or a polygonal body with a diameter not smaller than that of the side legs.
6. The erection method of the prefabricated box girder widening equipment is characterized by comprising the following steps of:
s1: assembling: after the bridge girder erection machine is assembled, the main supporting legs are supported on the bridge floor, and the side supporting legs are respectively supported on the assembled wide side bridge piers;
s2: erecting a beam: placing the beam pieces on a beam transporting vehicle, transporting the beam pieces to the lower part of a bridge girder erection machine by the beam transporting vehicle, adjusting the positions of the beam pieces to the bottom of a crown block, synchronously lifting the beam by the crown block, moving the crown block along a main cross beam, moving the beam pieces to the upper part of a width splicing section of a pier, and slowly dropping the beam to complete erection of the first beam piece;
s3: repeating the step S2 to finish the erection of the whole hole beam; then, erecting the next span spliced wide beam;
s4: moving the machine: moving the bridge girder erection machine, installing the consignment upright column on the girder transport vehicle, extending the consignment upright column, enabling the top of the consignment upright column to prop against the main cross beam, jacking the bridge girder erection machine away from the bridge floor, retracting the front side leg and the rear side leg, and moving the bridge girder erection machine forwards to the next span by the girder transport vehicle;
s5: repeating beam erecting: and after the bridge girder erection machine is moved to a preset position, the girder transportation vehicle folds up the consignment upright post, transfers the bridge girder erection machine and is installed in place, in order to avoid damaging the bridge floor, a pressure reducing plate is fixed at the bottom of the side leg above the bridge floor and is supported on the bridge floor, the rest legs are supported above the bridge piers, the steps S1-S3 of erecting the bridge girder erection machine are repeated, and the erection of the rest split width girders is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315221.8A CN113005917A (en) | 2021-03-24 | 2021-03-24 | Prefabricated box girder widening equipment and erecting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110315221.8A CN113005917A (en) | 2021-03-24 | 2021-03-24 | Prefabricated box girder widening equipment and erecting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000441A (en) * | 2021-10-11 | 2022-02-01 | 广西长长路桥建设有限公司 | Construction method of steel pipe support assisted 40m beam splicing wide frame |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008297777A (en) * | 2007-05-30 | 2008-12-11 | Sumitomo Mitsui Construction Co Ltd | How to build a bridge |
| CN109653104A (en) * | 2018-12-26 | 2019-04-19 | 中国水利水电第四工程局有限公司 | A kind of across the erection construction method of double line box girder change |
| CN110158486A (en) * | 2019-05-05 | 2019-08-23 | 郑州新大方重工科技有限公司 | It is a kind of to set up the Bridge Erector and construction method for spelling wide beam |
| CN215629392U (en) * | 2021-03-24 | 2022-01-25 | 中铁十六局集团第三工程有限公司 | Wide equipment is pieced together to prefabricated case roof beam |
-
2021
- 2021-03-24 CN CN202110315221.8A patent/CN113005917A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008297777A (en) * | 2007-05-30 | 2008-12-11 | Sumitomo Mitsui Construction Co Ltd | How to build a bridge |
| CN109653104A (en) * | 2018-12-26 | 2019-04-19 | 中国水利水电第四工程局有限公司 | A kind of across the erection construction method of double line box girder change |
| CN110158486A (en) * | 2019-05-05 | 2019-08-23 | 郑州新大方重工科技有限公司 | It is a kind of to set up the Bridge Erector and construction method for spelling wide beam |
| CN215629392U (en) * | 2021-03-24 | 2022-01-25 | 中铁十六局集团第三工程有限公司 | Wide equipment is pieced together to prefabricated case roof beam |
Non-Patent Citations (1)
| Title |
|---|
| 吴信然等: "《秦沈客运专线箱梁和轨道工程施工新技术》", 30 November 2003, pages: 101 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000441A (en) * | 2021-10-11 | 2022-02-01 | 广西长长路桥建设有限公司 | Construction method of steel pipe support assisted 40m beam splicing wide frame |
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