CN203923923U - High pier steel truss girder sets up gate-type lifting station - Google Patents
High pier steel truss girder sets up gate-type lifting station Download PDFInfo
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- CN203923923U CN203923923U CN201420263160.0U CN201420263160U CN203923923U CN 203923923 U CN203923923 U CN 203923923U CN 201420263160 U CN201420263160 U CN 201420263160U CN 203923923 U CN203923923 U CN 203923923U
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Abstract
High pier steel truss girder sets up gate-type lifting station, to realize the fortune beam function of girder steel rod member from ground fast lifting to main truss, meet the free cantilever erection of steel truss girder, and it is limited to solve job site condition, infeasible, unreasonable, the uneconomic problems of steel truss girder erection method such as water surface crane barge, tower crane construction, rack construction.Comprise and be arranged on the main truss sections on Dun Ta by tower crane, described pier tower side is fixedly installed portal frame at the upper chord of main truss sections, this portal frame has two main beams that laterally extend main truss sections formation cantilever segment, on these two main beams, crownblock beam is set, bale handle dolly is installed on crownblock beam.
Description
Technical field
The utility model relates to bridge, and particularly a kind of high pier steel truss girder for Long-Span Railway Cable-Stayed Bridge, suspension bridge and bridge steel trusses erection construction of the same type sets up gate-type lifting station.
Background technology
It is the whole joint precast assembly of steel truss girder that the steel girder erection construction of large-span truss bridge has two class methods, the first kind conventionally, and Equations of The Second Kind is that the on-the-spot single pole of steel truss girder is assembled.The whole joint precast assembly of steel truss girder can carry out the steel truss girder erection construction of bridge efficiently, and corresponding construction technology often requires to possess large-scale construction machinery, suitable site operation environment and sufficient operation side, and construction cost is common also higher.The assembled construction method of the on-the-spot single pole of steel truss girder is relatively simple and easy, and difficulty of construction is little, low to conditional requests such as construction environment and construction equipments, strong adaptability, and construction cost is also relatively low.
In the work progress of the whole joint free cantilever erection of Longspan Bridge steel truss girder, water surface crane barge is a kind of whole joint assembling and construction method of steel truss girder generally using.In work progress, first need prefabricated trusses by Shipping to specifying water surface site, then by large-scale erection crane, whole joint trusses is risen and winches to specified altitude assignment, last stretch-draw and adjust cable-stayed bridge cable or sling of suspension bridge Suo Li to realize the installation of whole joint beam section.Method at the above-mentioned water surface crane barge of employing carries out, in the assembled process of the whole joint of steel truss girder, having following three construction technology difficult points: the first, must guarantee broad water surface execution conditions, and the depth of water reaches construction requirement, larger on the navigation impact in navigation channel; The second, the deadweight of the whole joint beam of steel truss girder section is often larger, in the situation that particularly bridge floor and the water surface discrepancy in elevation are large, high to the crane capacity requirement of erection crane, and the installation stability of erection crane, bridge floor rigidity etc. are also had higher requirement; The 3rd, difficulty of construction is large, and risk factor is high, and particularly, in the erection construction process of high pier steel truss girder, in order to ensure construction safety, relevant safety precautions and economic indicator will significantly be upgraded.Certainly, in the situation that not meeting water surface floating and hanging, for example, in the whole joint assembling construction of the prefabricated trusses process of alpine terrain bridge, construction method is diversified, what for example the short stockaded village of Xiangxi Bridge Steel trusses set up employing is " rail rope moves beam method ", what Hubei four crossed a river that Bridge Steel trusses sets up employing is " horse race construction method ", and the construction method of the whole joint precast assembly of this class steel truss girder equally inevitably will be had higher requirement to the environment of job site, plant equipment and safety measure etc., construction cost also significantly increases thereupon.
At Longspan Bridge steel truss girder, set up in the assembled work progress of on-the-spot single pole, the other tower crane construction method of pier can realize from ground, transport trusses rod member to main truss to complete the steel truss girder erection construction between pier epimerite.But, the further extension of setting up internode along with steel trussed beam cantilever, corresponding stay cable of cable-stayed bridge or sling of suspension bridge are in place, the working space of tower crane free arm occurs conflicting with the installation site of suspension cable or hoist cable immediately, tower crane is from the vertical lifting trusses rod member of ground, cannot be rotated in place trusses rod member feeding main truss, in follow-up purlin, fortune beam and trusses free cantilever erection also cannot complete.
At Longspan Bridge steel truss, establish in the whole joint precast assembly of beam and the assembled work progress of on-the-spot single pole, rack construction method is a kind of general construction method, this construction method is by the assembled operation platform that provides that to set up full framing be steel truss girder, so that girder truss adopts whole joint precast assembly or the assembled mode of single pole to carry out assembling construction at the job platform of cradle top surface.Yet the limitation of rack construction method in the erection process of steel truss girder is also fairly obvious, particularly in bridge floor and the ground discrepancy in elevation very large in the situation that, set up high trestle and want suitable operation side can be provided, safeguard that the homeostatic construction cost of support is just quite huge, the potential safety hazard of the each side that high trestle construction brings is showed increased also, and construction cost sharply increases.
In sum, in the erection construction process of high pier girder truss, there is following limitation in existing steel truss girder erection construction method: high to construction environment and execution conditions requirement, do not have general applicability; High to construction machinery requirement, safety measure cost significantly increases; In the steel truss girder erection process of high pier bridge, construction safety hidden danger is large, and construction cost economic performance is unexcellent.These problems are effectively solved for a long time.
Utility model content
Technical problem to be solved in the utility model is a kind ofly to provide high pier steel truss girder to set up gate-type lifting station, to realize the fortune beam function of girder steel rod member from ground fast lifting to main truss, meet the free cantilever erection of steel truss girder, and it is limited to solve job site condition, infeasible, unreasonable, the uneconomic problems of steel truss girder erection method such as water surface crane barge, tower crane construction, rack construction.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
High pier steel truss girder of the present utility model sets up gate-type lifting station, comprise and be arranged on the main truss sections on Dun Ta by tower crane, it is characterized in that: described pier tower side is fixedly installed portal frame at the upper chord of main truss sections, this portal frame has two main beams that laterally extend main truss sections formation cantilever segment, on these two main beams, crownblock beam is set, bale handle dolly is installed on crownblock beam.
The beneficial effects of the utility model are, the fast and stable to main truss promotes by ground can to realize trusses rod member, and safety factor is high; Assembled by rod member, mounting or dismounting are convenient, and recycling rate of waterused is high; Bale handle process operation side is little, affected by the factors such as periphery terrain environment, execution conditions little, and applicability is strong; With respect to steel truss girder erection methods such as adopting water surface crane barge, tower crane construction, rack construction, will save a large amount of expenses, efficiently solve the technical barrier of long-term puzzlement the art.
Accompanying drawing explanation
This manual comprises following three width accompanying drawings:
Fig. 1 is that the high pier steel truss girder of the utility model sets up gate-type lifting station elevation;
Fig. 2 is that the high pier steel truss girder of the utility model sets up gate-type lifting station side view;
Fig. 3 is that the high pier steel truss girder of the utility model sets up gate-type lifting station plan view;
The title of member shown in figure and corresponding mark: main truss sections 10, main beam 21, head tree 22, bottom are to pull bar 23, lateral 24, diagonal brace 25, stull 26, oblique lateral bar 27, lateral bar 28, crownblock beam 30, bale handle dolly 31.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1, Fig. 2 and Fig. 3, high pier steel truss girder of the present utility model sets up gate-type lifting station, comprises and is arranged on the main truss sections 10 on Dun Ta by tower crane.Described pier tower side is fixedly installed portal frame at the upper chord of main truss sections 10, this portal frame has two main beams 21 that laterally extend main truss sections 10 formation cantilever segments, on these two main beams 21, crownblock beam 30 is set, bale handle dolly 31 is installed on crownblock beam 30.Crownblock beam 30 can move along main beam 21 length directions by its walking system on main beam 21, and bale handle dolly 31 can move along crownblock beam 30 length directions by its walking system on crownblock beam 30.
With reference to Fig. 2, in bale handle process, bale handle dolly 31 walks to walk to cantilever end along main beam 21, target trusses rod member is promoted to main truss sections 10 height by ground, suitably after adjustment aim trusses rod member height, keep vertical height stable, then bale handle dolly 31 carrying target trusses rod members walk to walk to main truss sections 10 central authorities by main beam 21 cantilever ends in portal frame, finally by bale handle dolly 31, beam orbit cars are transported in target trusses rod member feeding main truss sections 10 inside, realization mark trusses rod member is the bale handle process to main truss sections 10 by ground.
With reference to Fig. 2 and Fig. 3, as a kind of typical form of structure, two main beams of main frame 21 of described portal frame, four head trees 22, bottoms form pull bar 23 and stull 26, each main beam 21 is fixedly connected with the top of two head trees 22, bottom is fixedly connected with two head trees 22 at diagonal angle respectively the two ends of pull bar 23, and the two ends of spaced stull 26 are fixedly connected with two main beams 21 respectively.The inside rigidity and the stability that keep lifting station main frame, lateral 24, the oblique peaceful link rod 28 of lateral bar 27 can be set in the main frame of portal frame, the two ends of lateral 24 are fixedly connected with two main beams 21 of homonymy, the two ends of lateral bar 28 are fixedly connected with two main beams 21 respectively, and tiltedly the two ends of lateral bar 27 are fixedly connected with a main beam 21, stull 26 respectively.For strengthening main frame lateral rigidity, can wind brace 29 be set in the both lateral sides bottom of main frame.For strengthening the vertical rigidity of main frame cantilever end, diagonal brace 25 can be set on the cantilever segment of two main beams 21, the two ends of diagonal brace 25 are fixedly connected with the head tree 22 of main beam 21 cantilever segments and below thereof respectively.
The applicant successfully sets up high pier steel truss girder of the present utility model gate-type lifting station and is applied to change in the steel truss girder main beam supporting process of the sharp railway Korea Spro family a small bay in a river Yangtze Bridge.The construction of this bridge faces following technical barrier: due to bridge tower both sides, one side is that river surface is narrow but Yangtze River waterway that Provincial Shipping Volume is busy, and steel truss girder main beam supporting adopts the mode of whole sections water surface crane barge infeasible; Another side is land, shoal, does not possess the primary condition of water surface crane barge, and simultaneously whole joint beam section deadweight is excessive, and land route traffic condition and load-bearing vehicle all can not meet requirement.For the above-mentioned particular surroundings of job site, the steel truss girder of bridge sets up the final back gate-type lifting station fortune beam of the present utility model that adopted.Gate-type lifting station is arranged on the other trusses top of bridge tower, to main truss outside, stretch out bale handle cantilever, the mode promoting with single pole, trusses rod member is promoted to main truss from ground trestle, then by transporting beam orbit in purlin, be transported to the free cantilever erection that cantilever end carries out steel truss girder, realize the fast lifting of trusses rod member, and reduced significantly construction cost, accelerated construction progress.
Some principles that the high pier steel truss girder of the above the utility model that just explains through diagrams sets up gate-type lifting station, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore the corresponding modify being likely utilized every and equivalent, all belong to the scope of the claims that the utility model is applied for.
Claims (5)
1. high pier steel truss girder sets up gate-type lifting station, comprise and be arranged on the main truss sections (10) on Dun Ta by tower crane, it is characterized in that: described pier tower side is fixedly installed portal frame at the upper chord of main truss sections (10), this portal frame has two main beams (21) that laterally extend main truss sections (10) formation cantilever segment, on these two main beams (21), crownblock beam (30) is set, the upper bale handle dolly (31) of installing of crownblock beam (30).
2. high pier steel truss girder as claimed in claim 1 sets up gate-type lifting station, it is characterized in that: two main beams of main frame (21) of described portal frame, four head trees (22), bottom form pull bar (23) and stull (26), each main beam (21) is fixedly connected with the top of two head trees (22), bottom is fixedly connected with two head trees (22) at diagonal angle respectively the two ends of pull bar (23), and the two ends of spaced stull (26) are fixedly connected with two main beams (21) respectively.
3. high pier steel truss girder as claimed in claim 2 sets up gate-type lifting station, it is characterized in that: lateral (24), the oblique peaceful link rod of lateral bar (27) (28) are set in the main frame of described portal frame, the two ends of lateral (24) are fixedly connected with two main beams (21) of homonymy, the two ends of lateral bar (28) are fixedly connected with two main beams (21) respectively, and tiltedly the two ends of lateral bar (27) are fixedly connected with a main beam (21), stull (26) respectively.
4. high pier steel truss girder as claimed in claim 2 sets up gate-type lifting station,, it is characterized in that: the both lateral sides bottom of described main frame is provided with wind brace (29).
5. high pier steel truss girder as claimed in claim 2 sets up gate-type lifting station, it is characterized in that: on the cantilever segment of described two main beams (21), be provided with diagonal brace (25), the two ends of diagonal brace (25) are fixedly connected with the head tree (22) of main beam (21) cantilever segment and below thereof respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420263160.0U CN203923923U (en) | 2014-05-22 | 2014-05-22 | High pier steel truss girder sets up gate-type lifting station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420263160.0U CN203923923U (en) | 2014-05-22 | 2014-05-22 | High pier steel truss girder sets up gate-type lifting station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203923923U true CN203923923U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420263160.0U Expired - Fee Related CN203923923U (en) | 2014-05-22 | 2014-05-22 | High pier steel truss girder sets up gate-type lifting station |
Country Status (1)
| Country | Link |
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| CN (1) | CN203923923U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952983A (en) * | 2014-05-22 | 2014-07-30 | 中铁二院工程集团有限责任公司 | Portal type lifting station for erecting high-pier steel truss beam |
| CN113756200A (en) * | 2021-09-23 | 2021-12-07 | 中铁十一局集团第一工程有限公司 | Construction method for hanging and splicing steel beam on existing upper-span route |
-
2014
- 2014-05-22 CN CN201420263160.0U patent/CN203923923U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952983A (en) * | 2014-05-22 | 2014-07-30 | 中铁二院工程集团有限责任公司 | Portal type lifting station for erecting high-pier steel truss beam |
| CN113756200A (en) * | 2021-09-23 | 2021-12-07 | 中铁十一局集团第一工程有限公司 | Construction method for hanging and splicing steel beam on existing upper-span route |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |