CN110777683A - Device for dismantling peripheral structure of box girder and construction method thereof - Google Patents
Device for dismantling peripheral structure of box girder and construction method thereof Download PDFInfo
- Publication number
- CN110777683A CN110777683A CN201911034386.7A CN201911034386A CN110777683A CN 110777683 A CN110777683 A CN 110777683A CN 201911034386 A CN201911034386 A CN 201911034386A CN 110777683 A CN110777683 A CN 110777683A
- Authority
- CN
- China
- Prior art keywords
- box girder
- bearing
- truss
- anchor rod
- dismantling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 title claims abstract description 25
- 238000005520 cutting process Methods 0.000 claims description 31
- 238000005553 drilling Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 11
- 238000000926 separation method Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention discloses a device for dismantling a box girder peripheral structure and a construction method thereof, wherein the device comprises a base, a movable guide rail and a pulley, wherein the base is arranged on a box girder and comprises a receiving truss, the movable guide rail and the pulley arranged between the receiving truss and the movable guide rail; the bearing platform is arranged on one side of the box girder bridge body and comprises an overlap truss, a support frame, a bearing plate, an anchor rod, a hydraulic lifter, a positioner and a movable base; the lap-joint truss is lapped on the receiving truss, the positioner and the anchor rod are arranged on the lap-joint truss, the support frame is connected with the lap-joint truss and the movable base, and the bearing plate is arranged on the support frame through the hydraulic lifter; the bearing platforms at least comprise two bearing platforms which are respectively arranged on two sides of the box girder bridge body. The invention solves the technical problem that potential safety hazards of passing residents and passing vehicles are increased due to poor stability of the bridge body in the process of dividing and adjusting the bridge body.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a device for dismantling a box girder peripheral structure and a construction method thereof.
Background
With the development of national economy and the rapid development of traffic industry, some bridges need to be dismantled and rebuilt or expanded to form bridge decks because the bridges cannot meet the requirements of traffic flow and corresponding facilities of the existing traffic. The urban viaduct is different from general bridge construction, construction sites of the bridges are often located in busy urban areas, traffic is busy, schools, residences, business areas and the like are arranged around the bridges, in order to avoid great influence on traffic and inconvenience in life for surrounding residents, a method of limiting current while constructing is generally adopted, and meanwhile, the construction period of bridge dismantling and extension projects is required to be shortened as much as possible.
The demolition or extension of bridges involves the demolition of part of old bridge bodies, so the demolition protection work of urban viaducts is particularly important, and the safety of surrounding passerby residents and passing vehicles is ensured while the working hours are shortened.
Disclosure of Invention
The invention mainly aims to provide a device for dismantling a box girder peripheral structure, which aims to solve the technical problems that potential safety hazards of passerby and passing vehicles are increased due to the fact that traffic is prevented from being influenced as much as possible in the bridge dismantling or extension construction process, the bridge is required to be cut and dismantled, and the stability of the bridge is poor in the cutting and adjusting process.
In order to achieve the above object, according to one aspect of the present application, there is provided an apparatus for dismantling a peripheral structure of a box girder.
The device for dismantling the peripheral structure of the box girder comprises:
the base is arranged on the box girder and comprises a receiving truss, a movable guide rail and a pulley arranged between the receiving truss and the movable guide rail;
the bearing platform is arranged on one side of the box girder bridge body and comprises an overlap truss, a support frame, a bearing plate, an anchor rod, a hydraulic lifter, a positioner and a movable base; the lap-joint truss is lapped on the receiving truss, the positioner and the anchor rod are arranged on the lap-joint truss, the support frame is connected with the lap-joint truss and the movable base, and the bearing plate is arranged on the support frame through the hydraulic lifter;
the bearing platforms at least comprise two bearing platforms which are respectively arranged on two sides of the box girder bridge body.
Further, the locator is arranged on one side of the anchor rod.
Further, the stock of plummer and locator includes two at least.
Further, the locator is an infrared locator.
Further, the base is fixed on the box girder through a first fixing anchor rod.
Further, the plummer passes through the fixed stock of second and fixes subaerial.
Further, the end of the lap truss is provided with a signal sensor for position alignment.
In order to achieve the above object, according to another aspect of the present invention, a construction method for dismantling a box girder peripheral structure is provided.
The construction method for dismantling the peripheral structure of the box girder comprises the following steps:
dismantling block division, drilling, fixing of a device for dismantling the box girder peripheral structure, cutting off by a cutter and removal of a cutting member.
Furthermore, the construction method for dismantling the peripheral structure of the box girder comprises the following steps,
removing the block division, and drawing a cutting transverse line and a cutting longitudinal line on the box girder by adopting the principles of transverse bridge direction block division and longitudinal bridge direction segmentation;
drilling, namely forming a positioning hole for inserting the first fixing anchor rod and the anchor rod and a mounting hole of the second fixing anchor rod according to the gravity center position;
fixing a device for dismantling a peripheral structure of a box girder, fixing a base on the box girder, correspondingly arranging bearing tables on two sides of a bridge body of the box girder corresponding to the base, correcting the positions of the bearing tables through a signal sensor, finally fixing the positions of the bearing tables, connecting lap trusses of the bearing tables with bearing trusses of the base, and ensuring that the two ends of the base are stressed uniformly; connecting an anchor rod of the bearing platform and a flange plate of the box girder bridge body, and accurately aligning the anchor rod and the mounting hole through the positioner; the height of the bearing plate is driven and adjusted through a hydraulic lifter, so that the bearing plate is in contact with the bottom of the flange plate;
cutting off a flange plate of the box girder bridge body by a cutting machine, wherein the flange plate and the guard rail on the flange plate are cut off together;
removing a cutting component, and bearing the cut flange plate and the guard rail on the flange plate by the bearing table through the anchor rod and the bearing plate; and removing the second fixing anchor rod for fixing the bearing platform, and moving the cut flange plate and the guard rail on the flange plate to the outside of the construction site by the bearing platform under the action of the movable bottom plate for placing.
Furthermore, the cutting work of the flange plates on the two sides of the box girder bridge body is carried out simultaneously, so that the stability of the whole stress of the box girder bridge body is ensured.
In the embodiment of the invention, the aim of improving the overall safety coefficient of the bridge dismantling process is fulfilled by adopting a mode of cutting and limiting and integrated bearing type separation for dismantling the bridge body and matching the bearing platform and the base in a lap joint manner, so that the technical effect of ensuring the bridge in the rapid dismantling process is realized, and the technical problem of increasing the potential safety hazards of passerby and passing vehicles due to the poor stability of the bridge body in the cutting and separation process is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the invention and to make further features, objects, and advantages of the invention apparent. The drawings and their description illustrate exemplary embodiments of the invention and do not limit it inappropriately. In the drawings:
fig. 1 is a schematic structural view of a device for dismantling a peripheral structure of a box girder according to an embodiment of the present invention.
Reference numerals
1: a base; 2: carrying a truss; 3: a moving guide rail; 4: a pulley; 5: a bearing table; 6: lapping a truss; 7: a support frame; 8: a bearing plate; 9: an anchor rod; 10: a hydraulic lift; 11: a positioner; 12: moving the base; 13: a first fixed anchor; 14: a second anchor; 15: and a signal sensor.
Detailed Description
In order to make the person skilled in the art better understand the application scheme of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, shall fall within the scope of protection of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present application are described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the drawings.
As shown in fig. 1, the present invention relates to a device for dismantling a peripheral structure of a box girder, comprising a base 1 and a bearing platform 5, wherein the base 1 is arranged on the box girder and comprises a receiving truss 2, a moving guide rail 3 and a pulley 4 arranged between the receiving truss 2 and the moving guide rail 3; the bearing platform 5 is arranged on one side of the box girder bridge body and comprises an overlap truss 6, a support frame 7, a bearing plate 8, an anchor rod 9, a hydraulic lifter 10, a positioner 11 and a movable base 12; the lap-joint truss 6 is lapped on the bearing truss 2, the positioner 11 and the anchor rod 9 are arranged on the lap-joint truss 6, the support frame 7 is connected with the lap-joint truss 6 and the movable base 12, and the bearing plate 8 is arranged on the support frame 7 through the hydraulic lifter 10.
In a preferred embodiment of the present application, the bearing platforms 5 include at least two bearing platforms 5, and the two bearing platforms 5 are respectively disposed on two sides of the box girder bridge body; it is further preferred that the number of the anchor rods 9 is at least two, and the positioner 11 is arranged between the anchor rods 9 and used for positioning the position of the anchor rods 9; in the preferred embodiment of the present application, the locator 11 is an infrared locator. In other embodiments, the retainer 11 is disposed about the anchor bar 9. In the preferred embodiment of the present application, the anchor rods 9 and the locators 11 of each of the bearing tables 5 comprise at least two.
In the preferred embodiment of the present invention, the base 1 is fixed on the box girder by a first fixing anchor 13, and the bearing platform 8 is fixed on the ground by a second fixing anchor 14; in a further preferred embodiment, the end of the lap truss 6 is provided with a signal sensor 15 for performing position alignment, the signal sensor 15 is arranged on the lap truss 6 of the bearing platform 5 arranged along the two sides of the box girder bridge body, and the positions of the lap trusses on the two sides of the box girder bridge body are adjusted by sensing signals, so as to ensure that the lap trusses are positioned on the same operation surface, thereby ensuring the stability of the stress of the box girder in the construction process.
In a further preferred embodiment of the present application, the base is a truss structure, and the height of the support frame can be adjusted according to specific requirements of a construction site; further preferably, the width of the bearing platform is 1 time, 1/2 times, 1/4 times or 1/8 times of the width of a one-way channel of a road below the construction box girder bridge body, so that the road below the box girder bridge body can conveniently pass through, and the road is ensured to be smooth in the construction process.
According to another aspect of the present application, there is provided a box girder peripheral structure dismantling construction method corresponding to the above-described apparatus for box girder peripheral structure dismantling.
The construction method for dismantling the peripheral structure of the box girder comprises the following steps:
dismantling block division, drilling, fixing of a device for dismantling the box girder peripheral structure, cutting off by a cutter and removal of a cutting member.
Furthermore, the construction method for dismantling the peripheral structure of the box girder comprises the following steps,
removing the block division, and drawing a cutting transverse line and a cutting longitudinal line on the box girder by adopting the principles of transverse bridge direction block division and longitudinal bridge direction segmentation;
drilling, namely forming a positioning hole for inserting the first fixing anchor rod and the anchor rod and a mounting hole of the second fixing anchor rod according to the gravity center position;
fixing a device for dismantling a peripheral structure of a box girder, fixing a base on the box girder, correspondingly arranging bearing tables on two sides of a bridge body of the box girder corresponding to the base, correcting the positions of the bearing tables through a signal sensor, finally fixing the positions of the bearing tables, connecting lap trusses of the bearing tables with bearing trusses of the base, and ensuring that the two ends of the base are stressed uniformly; connecting an anchor rod of the bearing platform and a flange plate of the box girder bridge body, and accurately aligning the anchor rod and the mounting hole through the positioner; the height of the bearing plate is driven and adjusted through a hydraulic lifter, so that the bearing plate is in contact with the bottom of the flange plate;
cutting off a flange plate of the box girder bridge body by a cutting machine, wherein the flange plate and the guard rail on the flange plate are cut off together;
removing a cutting component, and bearing the cut flange plate and the guard rail on the flange plate by the bearing table through the anchor rod and the bearing plate; and removing the second fixing anchor rod for fixing the bearing platform, and moving the cut flange plate and the guard rail on the flange plate to the outside of the construction site by the bearing platform under the action of the movable bottom plate for placing.
Furthermore, the cutting work of the flange plates on the two sides of the box girder bridge body is carried out simultaneously, so that the stability of the whole stress of the box girder bridge body is ensured.
After the cutting and the dismounting work are finished, the first fixing anchor rod of the fixing base is dismounted, the base moves to a new bridge body to be dismounted and cut under the action of the guide rail and the pulley, and a new round of fixing and dismounting operation is carried out.
In the embodiment of the invention, the aim of improving the overall safety coefficient of the bridge dismantling process is fulfilled by adopting a mode of cutting and limiting and integrated bearing type separation for dismantling the bridge body and matching the bearing platform and the base in a lap joint manner, so that the technical effect of ensuring the bridge in the rapid dismantling process is realized, and the technical problem of increasing the potential safety hazards of passerby and passing vehicles due to the poor stability of the bridge body in the cutting and separation process is solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An apparatus for removal of a box girder enclosure structure, comprising:
the base (1) is arranged on the box girder and comprises a receiving truss (2), a movable guide rail (3) and a pulley (4) arranged between the receiving truss (2) and the movable guide rail (3);
the bearing platform (5) is arranged on one side of the box girder bridge body and comprises an overlap truss (6), a support frame (7), a bearing plate (8), an anchor rod (9), a hydraulic lifter (10), a positioner (11) and a movable base (12); the lap-joint truss (6) is lapped on the bearing truss (2), the positioner (11) and the anchor rod (9) are arranged on the lap-joint truss (6), the support frame (7) is connected with the lap-joint truss (6) and the movable base (12), and the bearing plate (8) is arranged on the support frame (7) through the hydraulic lifter (10);
the bearing platforms (5) at least comprise two bearing platforms (5), and the two bearing platforms (5) are respectively arranged on two sides of the box girder bridge body.
2. A device for box girder perimeter structure demolition according to claim 1, characterized in that the positioner (11) is arranged on one side of the anchor rods (9).
3. A device for box girder perimeter structure demolition according to claim 2, characterized in that the carrier table (5) comprises at least two anchor rods (9) and locators (11).
4. A device for the demolition of a perimeter structure of a box girder according to claim 1, characterized in that the locators (11) are infrared locators.
5. A device for the demolition of a perimeter structure of a box girder according to claim 1, characterized in that the base (1) is fixed on the box girder by means of a first fixing anchor (13).
6. A device for the demolition of a box girder perimeter structure according to claim 5, characterized in that the loading platform (8) is fixed on the ground by means of second fixing anchors (14).
7. A device for the demolition of a perimeter structure of a box girder according to claim 1, characterized in that the ends of the overlapping girders (6) are provided with signal sensors (15) for the alignment.
8. A construction method for dismantling a box girder peripheral structure comprises dismantling block division, drilling, fixing of a device for dismantling the box girder peripheral structure, cutting by a cutting machine and removal of a cutting member.
9. The construction method for dismantling the peripheral structure of the box girder according to claim 8, comprising the steps of,
removing the block division, and drawing a cutting transverse line and a cutting longitudinal line on the box girder by adopting the principles of transverse bridge direction block division and longitudinal bridge direction segmentation;
drilling, namely forming a positioning hole for inserting the first fixing anchor rod and the anchor rod and a mounting hole of the second fixing anchor rod according to the gravity center position;
fixing a device for dismantling a peripheral structure of a box girder, fixing a base on the box girder, correspondingly arranging bearing tables on two sides of a bridge body of the box girder corresponding to the base, correcting the positions of the bearing tables through a signal sensor, finally fixing the positions of the bearing tables, connecting lap trusses of the bearing tables with bearing trusses of the base, and ensuring that the two ends of the base are stressed uniformly; connecting an anchor rod of the bearing platform and a flange plate of the box girder bridge body, and accurately aligning the anchor rod and the mounting hole through the positioner; the height of the bearing plate is driven and adjusted through a hydraulic lifter, so that the bearing plate is in contact with the bottom of the flange plate;
cutting off a flange plate of the box girder bridge body by a cutting machine, wherein the flange plate and the guard rail on the flange plate are cut off together;
removing a cutting component, and bearing the cut flange plate and the guard rail on the flange plate by the bearing table through the anchor rod and the bearing plate; and removing the second fixing anchor rod for fixing the bearing platform, and moving the cut flange plate and the guard rail on the flange plate to the outside of the construction site by the bearing platform under the action of the movable bottom plate for placing.
10. The construction method for dismantling the peripheral structure of the box girder according to claim 9, wherein the cutting work of the flange plates at both sides of the box girder bridge body is performed simultaneously, so as to ensure the stability of the whole stress of the box girder bridge body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034386.7A CN110777683A (en) | 2019-10-28 | 2019-10-28 | Device for dismantling peripheral structure of box girder and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034386.7A CN110777683A (en) | 2019-10-28 | 2019-10-28 | Device for dismantling peripheral structure of box girder and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110777683A true CN110777683A (en) | 2020-02-11 |
Family
ID=69387262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911034386.7A Pending CN110777683A (en) | 2019-10-28 | 2019-10-28 | Device for dismantling peripheral structure of box girder and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110777683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214976A (en) * | 2022-01-27 | 2022-03-22 | 中铁二十二局集团第三工程有限公司 | Concrete bridge flange dismantling construction method and cantilever device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090036094A (en) * | 2009-03-06 | 2009-04-13 | 장신찬 | Replacement construction method of bridge and demolishment method of outdated bridge used therein |
| KR20150021230A (en) * | 2013-08-20 | 2015-03-02 | 주식회사 인터컨스텍 | Method for disassembling bridge using beam launcher with auto anchorage, location sensor and weight sensor |
| CN104652298A (en) * | 2015-01-28 | 2015-05-27 | 武汉二航路桥特种工程有限责任公司 | Integral lowering and removing system of span box girders based on bridge deck support and construction method of integral lowering and removing system |
| JP2017020290A (en) * | 2015-07-14 | 2017-01-26 | オリエンタル白石株式会社 | Disassembling method of bridge |
| CN107268463A (en) * | 2017-08-18 | 2017-10-20 | 中铁二局集团有限公司 | A kind of continuous beam method for dismounting |
| CN109235290A (en) * | 2018-10-11 | 2019-01-18 | 中建钢构有限公司 | Bridge peace tears construction method open |
| CN110172929A (en) * | 2019-06-18 | 2019-08-27 | 中交二公局第二工程有限公司 | A kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling method |
| CN211395409U (en) * | 2019-10-28 | 2020-09-01 | 中交路桥建设有限公司 | Device for dismantling peripheral structure of box girder |
-
2019
- 2019-10-28 CN CN201911034386.7A patent/CN110777683A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090036094A (en) * | 2009-03-06 | 2009-04-13 | 장신찬 | Replacement construction method of bridge and demolishment method of outdated bridge used therein |
| KR20150021230A (en) * | 2013-08-20 | 2015-03-02 | 주식회사 인터컨스텍 | Method for disassembling bridge using beam launcher with auto anchorage, location sensor and weight sensor |
| CN104652298A (en) * | 2015-01-28 | 2015-05-27 | 武汉二航路桥特种工程有限责任公司 | Integral lowering and removing system of span box girders based on bridge deck support and construction method of integral lowering and removing system |
| JP2017020290A (en) * | 2015-07-14 | 2017-01-26 | オリエンタル白石株式会社 | Disassembling method of bridge |
| CN107268463A (en) * | 2017-08-18 | 2017-10-20 | 中铁二局集团有限公司 | A kind of continuous beam method for dismounting |
| CN109235290A (en) * | 2018-10-11 | 2019-01-18 | 中建钢构有限公司 | Bridge peace tears construction method open |
| CN110172929A (en) * | 2019-06-18 | 2019-08-27 | 中交二公局第二工程有限公司 | A kind of concrete box beam flange plate cutting disassembling stabilising arrangement and cutting disassembling method |
| CN211395409U (en) * | 2019-10-28 | 2020-09-01 | 中交路桥建设有限公司 | Device for dismantling peripheral structure of box girder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214976A (en) * | 2022-01-27 | 2022-03-22 | 中铁二十二局集团第三工程有限公司 | Concrete bridge flange dismantling construction method and cantilever device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4624242B2 (en) | Girder construction method | |
| JP5047680B2 (en) | Construction method of continuous viaduct | |
| CN108824193A (en) | Bridge superstructure quickly removes, installation method and its replacement system | |
| CN109235291B (en) | Railway bridge beam replacing system | |
| JP3954869B2 (en) | Bridge girder replacement method | |
| CN106194216A (en) | A kind of Rectangular Box Culvert and constructing tunnel chassis | |
| CN105735139A (en) | Supporting system for construction of cast-in-situ box beam in overpass and construction method of box beam | |
| CN102720137B (en) | Prefabrication construction method for trough girder sections of track traffic high-level bridge | |
| JP4671912B2 (en) | Bridge replacement method | |
| KR101400302B1 (en) | Height flexible transporter for hypothesis of bridge | |
| CN211395409U (en) | Device for dismantling peripheral structure of box girder | |
| CN110777683A (en) | Device for dismantling peripheral structure of box girder and construction method thereof | |
| CN107938518A (en) | One kind is first turned across busy railway freely-supported steel truss girder translates erection construction method again | |
| CN219547558U (en) | Double-girder portal bridge erecting machine | |
| JP4424744B2 (en) | Bridge replacement method | |
| JP4704279B2 (en) | Bridge construction method | |
| CN214464226U (en) | Tunnel leveling layer vibration laser leveling machine device | |
| KR101572563B1 (en) | Method for carrying out replacement of an upperstructure of a bridge | |
| CN201046888Y (en) | Bridge-dismantling hoisting device | |
| KR101653559B1 (en) | Method of repairing railway | |
| JP2006144282A (en) | Bridge removing method | |
| CN103410104A (en) | Method and device for replacing support of urban viaduct | |
| CN215976880U (en) | Construction platform for installing flange plate | |
| CN211872651U (en) | Bridge girder erection machine and rotating device thereof | |
| CN113931071B (en) | Prefabricated box girder wet joint attached construction platform and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |