CN112854019A - Eccentric arrangement method and device for turntable on curved steel truss girder - Google Patents
Eccentric arrangement method and device for turntable on curved steel truss girder Download PDFInfo
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- CN112854019A CN112854019A CN202110037432.XA CN202110037432A CN112854019A CN 112854019 A CN112854019 A CN 112854019A CN 202110037432 A CN202110037432 A CN 202110037432A CN 112854019 A CN112854019 A CN 112854019A
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- spherical hinge
- girder
- steel truss
- supporting foot
- slideway
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a method and a device for eccentrically arranging a turntable on a curved steel truss girder, wherein the method comprises the following steps: arranging a spherical hinge assembly at a position with a preset transverse eccentricity between the pier top and the central line of the steel truss girder; a steel box girder is arranged at the upper part of the spherical hinge assembly; arranging a space diagonal brace at the upper part of the steel box girder, and supporting the steel truss girder at the upper part of the space diagonal brace; and taking the central line of the spherical hinge assembly as a swivel central line to swivel the top of the steel truss girder pier. The invention solves the problem of difficult arrangement of the rotary table on the bottom of the steel truss girder and realizes safe and effective load transfer.
Description
Technical Field
The invention relates to the technical field of bridge rotation, in particular to a method and a device for eccentrically arranging a rotary table on a curved steel truss girder.
Background
The swivel construction method is a construction method for completing the manufacture (pouring or splicing) of a bridge structure at a non-designed axis position and then positioning a swivel. When the beam section is on the flat curve, there is a certain lateral eccentricity between the center of gravity of the swivel beam section and the geometric center of the pier top.
Generally speaking, the steel truss girder can only transmit load through a member node, and is controlled by factors such as internode length, main truss distance and the like, the position of the member node is relatively fixed, and the center of gravity of a swivel (namely, the center of a spherical hinge) is influenced by the radius of a curve and cannot coincide with the member node; due to the influences of factors such as transverse eccentricity and transverse asymmetry of the positions of the nodes on the flat curve, most of the supporting legs cannot be overlapped with the nodes of the rod pieces. The series of contradictions cause the difficulty in arranging the upper rotary disc and limit the curved steel truss girder to be constructed by adopting a pier top rotating method. Therefore, the beam part applying the pier top swivel technology is mostly a concrete beam at present, and no steel truss beam is constructed by adopting a pier top swivel method.
Disclosure of Invention
The embodiment of the specification provides a method and a device for eccentrically arranging a turntable on a curved steel truss girder.
On one hand, the eccentric arrangement method of the turntable on the curved steel truss girder provided by the embodiment of the specification comprises the following steps:
arranging a spherical hinge assembly at a position with a preset transverse eccentricity between the pier top and the central line of the steel truss girder;
a steel box girder is arranged at the upper part of the spherical hinge assembly;
arranging a space diagonal brace at the upper part of the steel box girder, and supporting the steel truss girder at the upper part of the space diagonal brace;
and taking the central line of the spherical hinge assembly as a swivel central line to swivel the top of the steel truss girder pier.
On the other hand, this specification embodiment provides a curve steel truss roof beam carousel eccentric arrangement device, includes:
the spherical hinge assembly is arranged at a position with a preset transverse eccentricity away from the center line of the steel truss girder at the pier top, and the center line of the spherical hinge assembly is used as a rotating center line of a rotating body at the pier top of the steel truss girder;
the steel box girder is arranged at the upper part of the spherical hinge assembly;
and the space diagonal brace is arranged at the upper part of the steel box girder and supports the steel truss girder.
According to the technical scheme provided by the embodiment of the specification, the embodiment of the invention solves the problem that the rotary discs are difficult to arrange on the beam bottom of the steel truss beam, and realizes safe and effective load transfer.
Drawings
Fig. 1 is a flow chart of a method for eccentrically arranging a turntable on a curved steel truss girder according to some embodiments of the present disclosure.
Fig. 2 is a structural diagram of an eccentric arrangement device of an upper rotary disc of a curved steel truss girder according to some embodiments of the present disclosure.
Reference numerals: 1. a spherical hinge assembly; 2. a steel box girder; 3. a spatial diagonal strut; 4. a first arm brace; 5. a second arm brace; 6. a first slideway; 7. a second slideway; 8. a corbel beam; 9. and an auxiliary truss diagonal brace.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step should fall within the scope of protection of the present specification.
As shown in fig. 1, some embodiments of the present disclosure provide a method for eccentrically arranging a turntable on a curved steel truss girder, including providing a ball joint assembly 1 at a preset lateral eccentricity between a pier top and a center line of the steel truss girder; a steel box girder 2 is arranged at the upper part of the spherical hinge assembly 1; arranging a space diagonal brace 3 at the upper part of the steel box girder 2, and supporting the steel truss girder at the upper part of the space diagonal brace 3; and (4) taking the central line of the spherical hinge assembly 1 as a swivel central line to swivel the top of the steel truss girder pier.
In some embodiments of the present specification, a first supporting leg 4 is arranged at the lower part of one end of the steel box girder 2; a bracket cross beam 8 is arranged at the other end of the steel box girder 2, a second supporting foot 5 is arranged at the lower part of the bracket cross beam 8, an auxiliary truss diagonal brace 9 is arranged at the upper part of the bracket cross beam 8, and the upper part of the auxiliary truss diagonal brace 9 supports the steel truss girder; the first slideway 6 and the second slideway 7 are respectively arranged at the positions of the pier top corresponding to the first supporting foot 4 and the second supporting foot 5, and are used for enabling the first supporting foot 4 and the second supporting foot 5 to respectively move along the first slideway 6 and the second slideway 7, and it needs to be pointed out that the arrangement of the second supporting foot 5 in the embodiment can adapt to the situation that the transverse eccentricity is large and the supporting foot needs to be arranged in the range beyond the main truss.
In some embodiments of the present specification, a first supporting leg 4 is arranged at the lower part of one end of the steel box girder 2; a third supporting leg is arranged at the lower part of the other end of the steel box girder 2; and a first slideway 6 and a third slideway are respectively arranged at the positions of the pier top corresponding to the first supporting foot 4 and the third supporting foot, and are used for enabling the first supporting foot 4 and the third supporting foot to respectively move along the first slideway 6 and the third slideway.
On the other hand, as shown in fig. 2, some embodiments of the present disclosure further provide an eccentric arrangement device for an upper turntable of a curved steel truss girder, the device including: the spherical hinge assembly 1 is arranged at a position where a horizontal eccentricity is preset between the pier top and the center line of the steel truss girder, and the center line of the spherical hinge assembly 1 is used as a rotating center line of a rotating body at the pier top of the steel truss girder; the steel box girder 2 is arranged at the upper part of the spherical hinge assembly 1; and the space diagonal brace 3 is arranged at the upper part of the steel box girder 2 and supports the steel truss girder.
In some embodiments of the present description, the steel box girder further comprises a first supporting leg 4, wherein the first supporting leg 4 is arranged at the lower part of one end of the steel box girder 2; the bracket cross beam 8 is arranged at the other end of the steel box girder 2; the second supporting foot 5 is arranged at the lower part of the bracket cross beam 8; the auxiliary truss diagonal brace 9 is arranged at the upper part of the bracket cross beam 8, and supports the steel truss; the first slideway 6 and the second slideway 7 are respectively arranged at the positions of the pier top corresponding to the first supporting foot 4 and the second supporting foot 5, and are used for enabling the first supporting foot 4 and the second supporting foot 5 to respectively move along the first slideway 6 and the second slideway 7, and the second supporting foot 5 can be arranged in a range that the transverse eccentricity is large and the supporting foot needs to be arranged outside the main truss.
In some embodiments of the present description, a first brace 4, wherein the first brace 4 is arranged at the lower part of one end of the steel box girder 2; the third supporting leg is arranged at the lower part of the other end of the steel box girder 2; the first slideway 6 and the third slideway are respectively arranged at the positions of the pier top corresponding to the first supporting foot 4 and the third supporting foot, and are used for enabling the first supporting foot 4 and the third supporting foot to respectively move along the first slideway 6 and the third slideway.
In some embodiments of the present description, the spherical hinge assembly 1 includes an upper spherical hinge, a lower spherical hinge, and a pin; the upper spherical hinge is arranged at the lower part of the steel box girder 2; the lower spherical hinge is arranged at the upper part of the pier top; the pin shaft is connected with the upper spherical hinge and the lower spherical hinge in a penetrating manner.
Particularly, in order to realize that the spherical hinge and the supporting foot are safe and reasonable in stress and can directly transmit the load to the main truss, the invention can adopt a wide steel box girder as a fulcrum beam, and the spherical hinge is arranged below the beam. The crossbeam top sets up space diagonal brace, and each node near is transmitted in the comparatively even dispersion of the dead load of will turning huge. When the transverse eccentricity is large and the supporting feet need to be arranged outside the main truss, the auxiliary truss inclined supporting rods and the bracket cross beam are arranged, the supporting feet are arranged below the bracket cross beam, and the vertical force of the supporting feet is transmitted to the main truss node through the structure.
In conclusion, the invention solves the problem of difficult arrangement of the rotary table on the beam bottom of the steel truss beam, and realizes safe and effective load transmission.
While the process flows described above include operations that occur in a particular order, it should be appreciated that the processes may include more or fewer operations, which may be performed sequentially or in parallel. The present invention is described with reference to flowchart illustrations and/or block diagrams of methods according to embodiments of the invention.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method or device comprising the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the method embodiment, since it is substantially similar to the apparatus embodiment, the description is simple, and the relevant points can be referred to the partial description of the apparatus embodiment. The above description is only an example of the present specification, and is not intended to limit the present specification. Various modifications and alterations to this description will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present specification should be included in the scope of the claims of the present specification.
Claims (7)
1. The eccentric arrangement method of the rotary table on the curved steel truss girder is characterized by comprising the following steps:
arranging a spherical hinge assembly at a position with a preset transverse eccentricity between the pier top and the central line of the steel truss girder;
a steel box girder is arranged at the upper part of the spherical hinge assembly;
arranging a space diagonal brace at the upper part of the steel box girder, and supporting the steel truss girder at the upper part of the space diagonal brace;
and taking the central line of the spherical hinge assembly as a swivel central line to swivel the top of the steel truss girder pier.
2. The eccentric arrangement method of turntable on curved steel truss girder according to claim 1,
a first supporting leg is arranged at the lower part of one end of the steel box girder;
arranging a bracket cross beam at the other end of the steel box girder, arranging a second supporting leg at the lower part of the bracket cross beam, arranging an auxiliary truss diagonal brace at the upper part of the bracket cross beam, and supporting the steel truss girder at the upper part of the auxiliary truss diagonal brace;
and a first slide way and a second slide way are respectively arranged at the positions of the pier top corresponding to the first supporting foot and the second supporting foot, and are used for enabling the first supporting foot and the second supporting foot to respectively move along the first slide way and the second slide way.
3. The eccentric arrangement method of turntable on curved steel truss girder according to claim 1,
a first supporting leg is arranged at the lower part of one end of the steel box girder;
a third supporting leg is arranged at the lower part of the other end of the steel box girder;
and a first slideway and a third slideway are respectively arranged at the positions of the pier top corresponding to the first supporting foot and the third supporting foot and are used for enabling the first supporting foot and the third supporting foot to respectively move along the first slideway and the third slideway.
4. An eccentric arrangement device of an upper rotary disc of a curved steel truss girder is characterized by comprising,
the spherical hinge assembly is arranged at a position with a preset transverse eccentricity away from the center line of the steel truss girder at the pier top, and the center line of the spherical hinge assembly is used as a rotating center line of a rotating body at the pier top of the steel truss girder;
the steel box girder is arranged at the upper part of the spherical hinge assembly;
and the space diagonal brace is arranged at the upper part of the steel box girder and supports the steel truss girder.
5. The curved steel truss upper turntable eccentric arrangement device as claimed in claim 4, further comprising,
the first supporting leg is arranged at the lower part of one end of the steel box girder;
the bracket cross beam is arranged at the other end of the steel box girder;
the second supporting foot is arranged at the lower part of the bracket cross beam;
the auxiliary truss diagonal brace is arranged at the upper part of the bracket cross beam and supports the steel truss;
the first slideway and the second slideway are respectively arranged at the positions, corresponding to the first supporting foot and the second supporting foot, of the pier top and are used for enabling the first supporting foot and the second supporting foot to respectively move along the first slideway and the second slideway.
6. The curved steel truss upper turntable eccentric arrangement device as claimed in claim 4, further comprising
The first supporting leg is arranged at the lower part of one end of the steel box girder;
the third supporting leg is arranged at the lower part of the other end of the steel box girder;
the first slideway and the third slideway are respectively arranged at the positions, corresponding to the first supporting foot and the third supporting foot, of the pier top and are used for enabling the first supporting foot and the third supporting foot to respectively move along the first slideway and the third slideway.
7. The curved steel truss upper turntable eccentric arrangement device as claimed in claim 4,
the spherical hinge assembly comprises an upper spherical hinge, a lower spherical hinge and a pin shaft;
the upper spherical hinge is arranged at the lower part of the steel box girder;
the lower spherical hinge is arranged at the upper part of the pier top;
the pin shaft is connected with the upper spherical hinge and the lower spherical hinge in a penetrating manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110037432.XA CN112854019B (en) | 2021-01-12 | 2021-01-12 | Eccentric arrangement method and device for upper turntable of curved steel truss girder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110037432.XA CN112854019B (en) | 2021-01-12 | 2021-01-12 | Eccentric arrangement method and device for upper turntable of curved steel truss girder |
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| CN112854019A true CN112854019A (en) | 2021-05-28 |
| CN112854019B CN112854019B (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110037432.XA Active CN112854019B (en) | 2021-01-12 | 2021-01-12 | Eccentric arrangement method and device for upper turntable of curved steel truss girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356084A (en) * | 2021-06-08 | 2021-09-07 | 宁波市轨道交通集团有限公司 | Turning curve bridge structure and curve bridge eccentric turning construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116011A (en) * | 2011-01-07 | 2011-07-06 | 中铁四局集团第二工程有限公司 | No-balance-weight horizontal-rotation construction method of steel truss girder bridge spanning railway operating line |
| CN105421248A (en) * | 2015-12-31 | 2016-03-23 | 中铁二十局集团第一工程有限公司 | Swivel and closure construction method for large-span continuous beam crossing existing station |
| CN205775887U (en) * | 2016-05-18 | 2016-12-07 | 中铁第四勘察设计院集团有限公司 | A kind of large eccentricity rotary body device of Curved Stayed-cable Bridge |
| CN109371852A (en) * | 2018-10-26 | 2019-02-22 | 中铁武汉勘察设计研究院有限公司 | A kind of high-level bridge construction method across rail yard |
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2021
- 2021-01-12 CN CN202110037432.XA patent/CN112854019B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116011A (en) * | 2011-01-07 | 2011-07-06 | 中铁四局集团第二工程有限公司 | No-balance-weight horizontal-rotation construction method of steel truss girder bridge spanning railway operating line |
| CN105421248A (en) * | 2015-12-31 | 2016-03-23 | 中铁二十局集团第一工程有限公司 | Swivel and closure construction method for large-span continuous beam crossing existing station |
| CN205775887U (en) * | 2016-05-18 | 2016-12-07 | 中铁第四勘察设计院集团有限公司 | A kind of large eccentricity rotary body device of Curved Stayed-cable Bridge |
| CN109371852A (en) * | 2018-10-26 | 2019-02-22 | 中铁武汉勘察设计研究院有限公司 | A kind of high-level bridge construction method across rail yard |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356084A (en) * | 2021-06-08 | 2021-09-07 | 宁波市轨道交通集团有限公司 | Turning curve bridge structure and curve bridge eccentric turning construction method |
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| CN112854019B (en) | 2023-06-06 |
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