CN108708294B - Short slideway beam for pushing construction of unequal-section truss beam and pushing method - Google Patents
Short slideway beam for pushing construction of unequal-section truss beam and pushing method Download PDFInfo
- Publication number
- CN108708294B CN108708294B CN201810755382.7A CN201810755382A CN108708294B CN 108708294 B CN108708294 B CN 108708294B CN 201810755382 A CN201810755382 A CN 201810755382A CN 108708294 B CN108708294 B CN 108708294B
- Authority
- CN
- China
- Prior art keywords
- jack
- pushing
- truss
- girder
- sliding block
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a short slideway beam for pushing construction of a truss beam between different joints and a pushing method, wherein the short slideway beam comprises a box beam, the top of the box beam is provided with a stainless steel plate, the stainless steel plate is supported at the bottom of a sliding block, two sides of the box beam are provided with jack support platforms, the two jack support platforms are arranged along the width direction of the truss beam, a jack and a distribution beam are sequentially arranged at the top of the jack support platform from bottom to top, and the jack moves on the jack support platform along the pushing direction. The invention is provided with the box-type beam and the jack supporting platform, and the jack and the distribution beam can move on the jack supporting platform along the pushing direction so as to adapt to the change of the node position caused by unequal internode pushing of the truss beam, realize unequal internode pushing construction and have the advantages of simple structure and convenient construction operation.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a short slideway beam for pushing construction of an unequal truss beam and a pushing method.
Background
The truss girder is a node stress structure, the pushing construction generally repeats the pushing steps according to the internode length, namely, the sliding block supports the truss girder to push one internode length, then the jack jacks the truss girder, the sliding block moves one internode length backwards, the jack returns oil, the sliding block supports the truss girder, and the pushing and jacking steps are repeated until the truss girder is pushed to a designed position. The positions of the sliding blocks for supporting the steel beam and the jack-up position are truss girder nodes and the vicinity of the nodes, and the positions of the sliding blocks and the jack-up position are relatively fixed.
The truss girder is generally of an equal-section structure, the section length of the truss girder is N, pushing construction is generally repeated according to the length N, the slideway girder is also generally designed into a short slideway girder matched with the section length N, and the positions of the sliding blocks and the jacks on the slideway girder are relatively fixed.
When the multi-hole simply supported steel truss girder is constructed by adopting a pushing method, the simply supported structure is required to be changed into a continuous structure, and as the end head of the simply supported girder has a certain length, a length d is increased between two adjacent holes of the simply supported girder after the end head of the simply supported girder is changed into the continuous structure, so that two lengths of N and N+d exist during pushing construction.
The design of the slideway beam needs to meet the alternating change of the two internode lengths, meanwhile, the arrangement of the sliding blocks and the jacks needs to be at the position where the truss beam can bear vertical load, the positions of the existing slideway beam jacks and the sliding blocks are relatively fixed, and the slideway beam jack can only be applied to the pushing construction of the truss beam with the same internode length, so that the problem of poor adaptability to different internode lengths is solved, and the slideway beam jack is not suitable for the requirement of the alternating change of different internode lengths.
In view of this, there is an urgent need to improve the existing pushing construction device for truss girders with different sections, so that the pushing construction device can be applied to truss girder pushing construction with different sections, and the requirement of alternating different sections of truss girders can be met.
Disclosure of Invention
The invention aims to solve the technical problems that the existing truss girder pushing device has poor adaptability to truss girders with different internode lengths and cannot be suitable for truss girder pushing construction with different internode lengths alternately changed.
In order to solve the technical problems, the technical scheme adopted by the invention is to provide the short slideway beam for pushing construction of the unequal truss beam, which comprises a box beam, wherein a stainless steel plate is arranged at the top of the box beam and is supported at the bottom of a sliding block, jack support platforms are arranged at two sides of the box beam, the two jack support platforms are arranged along the width direction of the truss beam, a jack and a distribution beam are sequentially arranged at the top of the jack support platform from bottom to top, and the jack moves on the jack support platform along the pushing direction.
In the scheme, the jack support platform and the bottom of the box girder are in the same plane, and the top of the box girder extends out of the top of the jack support platform.
In the scheme, the box girder and the jack support platform are formed by welding steel plates.
In the scheme, the box beam and the two jack support platforms are fixed through welding.
In the above scheme, the bottom of the box girder is provided with a supporting structure for supporting the box girder.
In the above scheme, the supporting structure is fixed on a bearing platform or pile foundation, and comprises a pier body or a steel pipe pile.
In the scheme, the engineering plastic alloy plate is arranged at the bottom of the sliding block, a friction pair is formed between the stainless steel plate and the engineering plastic alloy plate, and lubricating grease is smeared between the friction pairs.
The invention also provides a pushing method for pushing construction of the unequal-section truss girder, which comprises the following steps:
firstly, installing a short slideway beam, sequentially installing a jack and a distribution beam on a jack support platform of a box beam, supporting the truss beam by the jack and the distribution beam, and moving a sliding block backwards by one internode length N;
step two: returning oil by the jack, supporting the truss girder by the sliding block, and pushing the truss girder forwards by the horizontal jack by one internode length N;
step three: the sliding block supports the truss girder, and the jack and the distribution girder recede by a distance d;
step four: the jack and the distribution beam support the truss beam, and the sliding block moves backwards by a distance of n+d;
step five: returning oil by the jack, supporting the truss girder by the sliding block, and pushing the truss girder by a distance of n+d through the horizontal jack;
step six: the sliding block supports the truss girder, and the jack and the distribution girder move forward by a distance d;
step seven: and (3) repeating the first step and the second step, and starting the conventional internode length N pushing construction.
In the above scheme, in the third step, the jack and the distributing beam are moved manually or in a way of chain drag.
Compared with the prior art, the invention is provided with the box-type beam and the jack supporting platform, and the jack and the distribution beam can move on the jack supporting platform along the pushing direction so as to adapt to the change of the node position caused by unequal internode pushing of the truss beam, realize unequal internode pushing construction and have the advantages of simple structure and convenient construction operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of a longitudinal jack mounted on the present invention;
FIG. 3 is a schematic view of the structure of the present invention mounted on a truss girder;
FIG. 4 is a schematic view of the structure of the present invention supported on the bottom of the slider;
FIG. 5 is an enlarged view of FIG. 4 at A;
fig. 6 is a flow chart of the construction of the present invention.
Detailed Description
The invention provides a short slideway beam for pushing construction of an unequal truss beam and a pushing method, wherein the positions of a jack and a distribution beam can move on a jack supporting platform along the pushing direction so as to adapt to the change of the node position caused by unequal pushing of the truss beam, realize the unequal pushing construction, and have the advantages of simple structure and convenient construction operation. The invention is described in detail below with reference to the drawings and the detailed description.
As shown in fig. 1 to 5, the short slideway beam for pushing construction of unequal truss beams provided by the invention comprises a box beam 10, wherein a stainless steel plate 30 is arranged at the top of the box beam 10, the stainless steel plate 30 is supported at the bottom of a sliding block 70, jack support platforms 20 are arranged on two sides of the box beam 10, the two jack support platforms 20 are arranged along the width direction of the truss beams, a jack 50 and a distribution beam 60 are sequentially arranged at the top of the jack support platforms 20 from bottom to top, and the jack 50 moves on the jack support platforms 20 along the pushing direction.
As shown in fig. 1 and 2, the jack support platform 20 and the bottom of the box girder 10 are in the same plane, and the top of the box girder 10 extends out of the top of the jack support platform 20, so that the jack 50 can move back and forth along the length direction of the slideway girder to adapt to the change of the internode length and the node position of the truss girder.
The box girder 10 and the jack support platform 20 are formed by welding steel plates, and the box girder 10 and the jack support platform 20 are fixed by welding, so that the structure is more stable.
As shown in fig. 3, the bottom of the box girder 10 is provided with a supporting structure for supporting the box girder 10 so that it can bear the load when the truss girder is pushed. The supporting structure is fixed on the bearing platform or the pile foundation, and the supporting structure is a pier body or a steel pipe pile and the like.
As shown in fig. 4 and 5, the engineering plastic alloy plate 40 is arranged at the bottom of the sliding block 70, a friction pair with a smaller friction coefficient is formed between the stainless steel plate 30 and the engineering plastic alloy plate 40, and the truss girder can be pushed forward against the smaller friction force, so that the sliding block 70 can slide relative to the box girder 10, and further optimally, lubricating grease is smeared between the friction pairs to further reduce the friction force.
As shown in FIG. 6, the pushing method for the unequal truss girder pushing construction comprises the following steps:
firstly, installing short slideway beams, sequentially installing a jack 50 and a distribution beam 60 on a jack support platform 20 of a box girder 10, and supporting a truss girder by the jack 50 and the distribution beam 60 to separate a sliding block 70 from the truss girder, wherein the sliding block 70 moves backwards by one internode length N to prepare for pushing the truss girder;
step two: returning oil from the jack 50, supporting the truss girder by the sliding block 70, and pushing the truss girder forwards by the horizontal jack by one internode length N;
step three: the sliding blocks 70 support the truss girder, the jacks 50 and the distribution beams 60 are retracted by a distance d, and the pushing device is suitable for pushing unequal joints of the truss girder;
step four: the jack 50 and the distribution beam 60 support truss beams, and the sliding block 70 moves backwards by a distance of n+d to prepare for the next pushing;
step five: returning oil from the jack 50, supporting the truss girder by the sliding block 70, and pushing the truss girder by a distance of n+d through the horizontal jack;
step six: the slide block 70 supports the truss girder, and the jack 50 and the distribution beam 60 are moved forward by a distance d;
step seven: and (3) repeating the first step and the second step, and starting the conventional internode length N pushing construction.
Because the weight of the jack 50 and the distribution beam 60 is light, the jack 50 and the distribution beam 60 can be moved manually or in a chain-down dragging manner, and can be selected according to the site construction condition.
Wherein N is the conventional internode length of the truss girder, and d is the length increased by changing the simple truss girder into the continuous truss girder. Because the truss girder is of a node stress structure, the pushing distance is generally one internode length each time during pushing construction, and the position of the truss girder capable of bearing vertical load can only be near the node and the node, so that the pushing distance of the truss girder is N and N+d, and the two pushing distances alternately appear and are unequal internode pushing.
The invention is provided with the box-type beam and the jack supporting platform, and the jack and the distribution beam can move on the jack supporting platform along the pushing direction so as to adapt to the change of the node position caused by unequal internode pushing of the truss beam, realize unequal internode pushing construction and have the advantages of simple structure and convenient construction operation.
The present invention is not limited to the above-mentioned preferred embodiments, and any person who can learn the structural changes made under the teaching of the present invention can fall within the scope of the present invention if the present invention has the same or similar technical solutions.
Claims (2)
1. The pushing method for unequal truss girder pushing construction is characterized by comprising the following steps of:
firstly, installing a short slideway beam, sequentially installing a jack and a distribution beam on a jack support platform of a box beam, supporting the truss beam by the jack and the distribution beam, and moving a sliding block backwards by one internode length N; the short slideway beam comprises a box beam, a stainless steel plate is arranged at the top of the box beam, the stainless steel plate is supported at the bottom of a sliding block, jack support platforms are arranged at two sides of the box beam, the two jack support platforms are arranged along the width direction of the truss beam, a jack and a distribution beam are sequentially arranged at the top of the jack support platform from bottom to top, and the jack moves on the jack support platform along the pushing direction; the jack support platform and the bottom of the box beam are in the same plane, and the top of the box beam extends out of the top of the jack support platform;
step two: returning oil by the jack, supporting the truss girder by the sliding block, and pushing the truss girder forwards by the horizontal jack by one internode length N;
step three: the sliding block supports the truss girder, and the jack and the distribution girder recede by a distance d;
step four: the jack and the distribution beam support the truss beam, and the sliding block moves backwards by a distance of n+d;
step five: returning oil by the jack, supporting the truss girder by the sliding block, and pushing the truss girder by a distance of n+d through the horizontal jack;
step six: the sliding block supports the truss girder, and the jack and the distribution girder move forward by a distance d;
step seven: and (3) repeating the first step and the second step, and starting the conventional internode length N pushing construction.
2. The pushing method of unequal truss girder pushing construction according to claim 1, wherein in the third step, the jack and the distribution girder are moved manually or by means of chain drag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810755382.7A CN108708294B (en) | 2018-07-11 | 2018-07-11 | Short slideway beam for pushing construction of unequal-section truss beam and pushing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810755382.7A CN108708294B (en) | 2018-07-11 | 2018-07-11 | Short slideway beam for pushing construction of unequal-section truss beam and pushing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108708294A CN108708294A (en) | 2018-10-26 |
| CN108708294B true CN108708294B (en) | 2023-12-12 |
Family
ID=63874868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810755382.7A Active CN108708294B (en) | 2018-07-11 | 2018-07-11 | Short slideway beam for pushing construction of unequal-section truss beam and pushing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108708294B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220580A (en) * | 2007-12-04 | 2008-07-16 | 中铁大桥局股份有限公司 | Portrait multi-point continuously dragging construction method for trussed steel beam |
| CN101446068A (en) * | 2008-12-25 | 2009-06-03 | 湖南路桥建设集团公司 | Method for erecting suspension bridge main girder by segmenting and jacking and adopted device for rolling and moving heavy objects |
| CN101761032A (en) * | 2009-12-31 | 2010-06-30 | 上海海珀联动力技术有限公司 | Jack-in erection equipment for bridge |
| CN101831874A (en) * | 2010-05-27 | 2010-09-15 | 中铁大桥局集团第一工程有限公司 | Multipoint synchronous push construction method for porous large-span continuous steel truss girder |
| CN201588175U (en) * | 2009-12-30 | 2010-09-22 | 长沙理工大学 | Pushing slide rail scale height regulation apparatus |
| CN101906755A (en) * | 2010-09-06 | 2010-12-08 | 中铁大桥局集团有限公司 | Three-truss continuous steel truss girder pushing device and arrangement method thereof |
| CN101929129A (en) * | 2010-09-06 | 2010-12-29 | 中铁大桥局集团有限公司 | Novel slipway beam for incremental launching construction |
| CN102587291A (en) * | 2012-03-27 | 2012-07-18 | 中交四航局第一工程有限公司 | Walking type multipoint pushing construction method and walking type multipoint pushing construction system for steel box girder |
| CN105274942A (en) * | 2015-11-23 | 2016-01-27 | 柳州欧维姆工程有限公司 | Large-span continuous steel truss multi-point synchronous automatic cyclic alternating sliding shoe push system and construction method thereof |
| CN105350457A (en) * | 2015-11-13 | 2016-02-24 | 中铁大桥局集团第一工程有限公司 | Method for falling of steel trough beam in bridge walking type pushing construction |
| CN106948268A (en) * | 2017-04-24 | 2017-07-14 | 中铁七局集团武汉工程有限公司 | Variable Section Steel box beam pushing tow is combined the unit and application method |
| CN206667081U (en) * | 2017-03-30 | 2017-11-24 | 江苏兆通工程技术有限公司 | A kind of bridge jacking translates three-dimensional jack |
| CN207138506U (en) * | 2017-07-21 | 2018-03-27 | 中冶南方工程技术有限公司 | Eighteen-high mill lateral support attachment means |
| CN108103953A (en) * | 2018-03-09 | 2018-06-01 | 中国铁建大桥工程局集团有限公司 | Suitable for high-block bridge degree steel truss girder bridge double-slider push construction method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3837888B2 (en) * | 1997-12-16 | 2006-10-25 | 石川島播磨重工業株式会社 | Bridge girder continuous feeding device |
| JPH11172627A (en) * | 1997-12-16 | 1999-06-29 | Ishikawajima Harima Heavy Ind Co Ltd | Method and device for sending out variable cross section girder |
-
2018
- 2018-07-11 CN CN201810755382.7A patent/CN108708294B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220580A (en) * | 2007-12-04 | 2008-07-16 | 中铁大桥局股份有限公司 | Portrait multi-point continuously dragging construction method for trussed steel beam |
| CN101446068A (en) * | 2008-12-25 | 2009-06-03 | 湖南路桥建设集团公司 | Method for erecting suspension bridge main girder by segmenting and jacking and adopted device for rolling and moving heavy objects |
| CN201588175U (en) * | 2009-12-30 | 2010-09-22 | 长沙理工大学 | Pushing slide rail scale height regulation apparatus |
| CN101761032A (en) * | 2009-12-31 | 2010-06-30 | 上海海珀联动力技术有限公司 | Jack-in erection equipment for bridge |
| CN101831874A (en) * | 2010-05-27 | 2010-09-15 | 中铁大桥局集团第一工程有限公司 | Multipoint synchronous push construction method for porous large-span continuous steel truss girder |
| CN101929129A (en) * | 2010-09-06 | 2010-12-29 | 中铁大桥局集团有限公司 | Novel slipway beam for incremental launching construction |
| CN101906755A (en) * | 2010-09-06 | 2010-12-08 | 中铁大桥局集团有限公司 | Three-truss continuous steel truss girder pushing device and arrangement method thereof |
| CN102587291A (en) * | 2012-03-27 | 2012-07-18 | 中交四航局第一工程有限公司 | Walking type multipoint pushing construction method and walking type multipoint pushing construction system for steel box girder |
| CN105350457A (en) * | 2015-11-13 | 2016-02-24 | 中铁大桥局集团第一工程有限公司 | Method for falling of steel trough beam in bridge walking type pushing construction |
| CN105274942A (en) * | 2015-11-23 | 2016-01-27 | 柳州欧维姆工程有限公司 | Large-span continuous steel truss multi-point synchronous automatic cyclic alternating sliding shoe push system and construction method thereof |
| CN206667081U (en) * | 2017-03-30 | 2017-11-24 | 江苏兆通工程技术有限公司 | A kind of bridge jacking translates three-dimensional jack |
| CN106948268A (en) * | 2017-04-24 | 2017-07-14 | 中铁七局集团武汉工程有限公司 | Variable Section Steel box beam pushing tow is combined the unit and application method |
| CN207138506U (en) * | 2017-07-21 | 2018-03-27 | 中冶南方工程技术有限公司 | Eighteen-high mill lateral support attachment means |
| CN108103953A (en) * | 2018-03-09 | 2018-06-01 | 中国铁建大桥工程局集团有限公司 | Suitable for high-block bridge degree steel truss girder bridge double-slider push construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108708294A (en) | 2018-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102587291B (en) | Walking type multipoint pushing construction method and walking type multipoint pushing construction system for steel box girder | |
| CN103541308B (en) | Variable cross-section cantilever bridge box girder self-locking synchronization pushing system and construction method | |
| CN101906755B (en) | Three-truss continuous steel truss girder pushing device and arrangement method thereof | |
| CN204266134U (en) | Heavy duty longspan steel truss girder walking type pushing device | |
| CN202492807U (en) | Steel box girder walking-type multi-point incremental launching construction system | |
| CN209368698U (en) | A kind of walking incremental launching construction device | |
| CN103993560A (en) | Walking type jacking construction method and device for large-span reinforced concrete combined beams | |
| CN113846563B (en) | Construction method for side span and auxiliary span steel truss girder erection of large-span cable-stayed bridge | |
| CN112900281B (en) | Complicated curve beam upward jacking construction device and method | |
| CN104030205A (en) | Walking type thrustor based on rolling and sliding friction | |
| CN108708294B (en) | Short slideway beam for pushing construction of unequal-section truss beam and pushing method | |
| CN113123238B (en) | Transverse moving erection method for wide-section steel truss girder | |
| CN113026563B (en) | Suspension bridge high-low displacement girder trestle girder hoisting facility and construction method thereof | |
| CN103029807B (en) | Device and method for translating jumbo ship block | |
| CN105672236A (en) | Pin type rapid lifting mechanism and lifting method thereof | |
| CN108018771B (en) | A kind of thin wall-type steel box girder bridge girder construction and its pushing method | |
| CN210507166U (en) | Steel box girder stepping type multi-point pushing construction device | |
| CN218667177U (en) | Hydraulic adjustable heavy object moving and transporting device for bridge | |
| CN101967800B (en) | Erecting, pushing and sliding method of steel box beam | |
| CN216474590U (en) | Directional roller shaft type sliding fulcrum for overhead jacking box culvert of railway business line | |
| CN212335771U (en) | Descending movable formwork demolishs auxiliary device based on it is convenient | |
| JP2010203155A (en) | Device and method for constructing viaduct right above | |
| CN108217448A (en) | A kind of integrated bridge floor device for hoisting for composite beam construction | |
| CN207109858U (en) | A kind of curved section tube coupling steel reinforcement cage thrustor | |
| CN207032059U (en) | Pushing tow power set available for Large-span Steel Box Beam construction |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |