CN112854019B - Eccentric arrangement method and device for upper turntable of curved steel truss girder - Google Patents
Eccentric arrangement method and device for upper turntable of curved steel truss girder Download PDFInfo
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- CN112854019B CN112854019B CN202110037432.XA CN202110037432A CN112854019B CN 112854019 B CN112854019 B CN 112854019B CN 202110037432 A CN202110037432 A CN 202110037432A CN 112854019 B CN112854019 B CN 112854019B
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- supporting leg
- spherical hinge
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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
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Abstract
The invention discloses a method and a device for eccentric arrangement of a turntable on a curved steel truss girder, wherein the method comprises the following steps: a spherical hinge assembly is arranged at a preset transverse eccentric distance from the center line of the steel truss girder to the pier top; a steel box girder is arranged at the upper part of the spherical hinge assembly; a space diagonal brace is arranged at the upper part of the steel box girder, and the steel truss girder is supported at the upper part of the space diagonal brace; and taking the central line of the spherical hinge assembly as the central line of the rotator, and performing steel truss girder pier top rotator. The invention solves the problem that the turntable is difficult to arrange on the beam bottom of the steel truss beam, and realizes the safe and effective transmission of load.
Description
Technical Field
The invention relates to the technical field of bridge rotators, in particular to a method and a device for eccentric arrangement of a turntable on a curved steel truss girder.
Background
The construction by the swivel method is a construction method for completing the manufacturing (pouring or splicing) of the bridge structure at the position of the non-design axis and then locating the swivel. When the beam part is positioned on the flat curve, a certain transverse eccentricity exists between the gravity center of the swivel beam section and the geometric center of the pier top.
Generally, the steel truss girder can only transmit load through the rod piece node, is controlled by factors such as the length of the joints, the distance between main trusses and the like, the position of the rod piece node is relatively fixed, and the center of gravity (namely the center of the spherical hinge) of the swivel body is influenced by the radius of a curve and cannot coincide with the rod piece node; the device is influenced by factors such as transverse eccentricity, transverse asymmetry of the positions of the nodes on the flat curve and the like, so that most of the support foot arrangement cannot coincide with the nodes of the rod piece. The series of contradictions cause the difficulty in arranging the upper turntable and limit the construction of the curved steel truss girder by adopting a pier top swivel method. Therefore, most of beam parts applying pier top swivel technology at present are concrete beams, 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 eccentric arrangement of a turntable on a curved steel truss girder.
On one hand, the embodiment of the specification provides a method for eccentrically arranging a turntable on a curved steel truss girder, which comprises the following steps:
a spherical hinge assembly is arranged at a preset transverse eccentric distance from the center line of the steel truss girder to the pier top;
a steel box girder is arranged at the upper part of the spherical hinge assembly;
a space diagonal brace is arranged at the upper part of the steel box girder, and the steel truss girder is supported at the upper part of the space diagonal brace;
and taking the central line of the spherical hinge assembly as the central line of the rotator, and performing steel truss girder pier top rotator.
On the other hand, the embodiment of the specification provides a curved steel truss girder upper turntable eccentric arrangement device, including:
the spherical hinge assembly is arranged at a preset transverse eccentric distance from the center line of the steel truss girder to the pier top, and the center line of the spherical hinge assembly is used as the center line of a swivel body of 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.
The technical scheme provided by the embodiment of the specification can solve the problem that the turntable is difficult to arrange on the beam bottom of the steel truss beam, and realize safe and effective load transmission.
Drawings
Fig. 1 is a flow chart of a method of eccentric arrangement of a turntable on a curved steel truss girder according to some embodiments of the present disclosure.
Fig. 2 is a block diagram of an eccentric arrangement of a turntable on 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. spatial diagonal braces; 4. a first support leg; 5. a second support leg; 6. a first slideway; 7. a second slideway; 8. a bracket beam; 9. auxiliary truss diagonal braces.
Detailed Description
In order to make the technical solutions in the present specification better understood by those skilled in the art, 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 some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure.
As shown in fig. 1, some embodiments of the present disclosure provide a method for arranging a turntable on a curved steel truss girder eccentrically, which includes arranging a spherical hinge assembly 1 at a preset lateral eccentricity of a pier top from 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; a space diagonal brace 3 is arranged at the upper part of the steel box girder 2, and the steel truss girder is supported at the upper part of the space diagonal brace 3; and taking the central line of the spherical hinge assembly 1 as the central line of the rotator, and performing steel truss girder pier top rotator.
In some embodiments of the present description, a first supporting leg 4 is disposed at a lower portion of one end of the steel box girder 2; a bracket beam 8 is arranged at the other end of the steel box girder 2, a second supporting leg 5 is arranged at the lower part of the bracket beam 8, a secondary truss diagonal brace 9 is arranged at the upper part of the bracket beam 8, and the upper part of the secondary truss diagonal brace 9 supports the steel truss girder; the first slide way 6 and the second slide way 7 are respectively disposed at positions of the pier top corresponding to the first supporting leg 4 and the second supporting leg 5, so that the first supporting leg 4 and the second supporting leg 5 can move along the first slide way 6 and the second slide way 7 respectively, and it should be noted that, in this embodiment, the arrangement of the second supporting leg 5 can adapt to the situation that the lateral eccentricity is larger and the supporting leg needs to be arranged in a range outside the main truss.
In some embodiments of the present description, a first supporting leg 4 is disposed at a lower portion 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 leg 4 and the third supporting leg and are used for enabling the first supporting leg 4 and the third supporting leg to move along the first slideway 6 and the third slideway respectively.
In another aspect, as shown in fig. 2, some embodiments of the present disclosure further provide a device for eccentric arrangement of a turntable on a curved steel truss, where the device includes: the spherical hinge assembly 1 is arranged at a position with preset transverse eccentric distance from the center line of the steel truss girder to the pier top, and the center line of the spherical hinge assembly 1 is used as the center line of a turning body of the pier top turning body 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 disclosure, the first supporting leg 4 is further included, and the first supporting leg 4 is disposed at a lower portion 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 feet 5 are arranged at the lower part of the bracket cross beam 8; the auxiliary girder inclined stay bars 9 are arranged on the upper parts of the bracket cross beams 8 and support the steel girders; the first slide way 6 and the second slide way 7, the first slide way 6 and the second slide way 7 are respectively arranged at the positions of the pier top corresponding to the first supporting leg 4 and the second supporting leg 5, and are used for enabling the first supporting leg 4 and the second supporting leg 5 to respectively move along the first slide way 6 and the second slide way 7, and the arrangement of the second supporting leg 5 in the embodiment can adapt to the situation that the transverse eccentric distance is larger and the supporting leg needs to be arranged in a range outside the main truss.
In some embodiments of the present disclosure, a first supporting leg 4, where the first supporting leg 4 is disposed at a lower portion 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 slide way 6 and the third slide way are respectively arranged at positions of the pier top corresponding to the first supporting leg 4 and the third supporting leg, and are used for enabling the first supporting leg 4 and the third supporting leg to move along the first slide way 6 and the third slide way respectively.
In some embodiments of the present disclosure, the ball and socket assembly 1 includes an upper ball and socket, a lower ball and socket, 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.
Specifically, in order to realize safe and reasonable stress of the spherical hinge and the supporting feet and more directly transfer the load to the main truss, the invention can adopt a wide steel box girder as a fulcrum crossbeam, and the spherical hinge is arranged below the crossbeam. Space diagonal braces are arranged above the cross beams, and the huge swivel constant load is uniformly dispersed and transferred to each adjacent node. When the transverse eccentric distance is large and the supporting feet are required to be arranged in a range beyond the main truss, the auxiliary truss diagonal bracing rod 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 that the turntable is difficult to arrange on the beam bottom of the steel truss beam, and realizes the safe and effective transmission of load.
While the process flows described above include a plurality of operations occurring in a particular order, it should be apparent 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 one … …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the method embodiments, since they are substantially similar to the apparatus embodiments, the description is relatively simple, with reference to the description of the apparatus embodiments in part. The foregoing is merely an example of the present specification and is not intended to limit the present specification. Various modifications and alterations to this specification will become apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of the present description, are intended to be included within the scope of the claims of the present description.
Claims (4)
1. An eccentric arrangement method of a turntable on a curved steel truss girder is characterized by comprising the following steps:
a spherical hinge assembly is arranged at a preset transverse eccentric distance from the center line of the steel truss girder to the pier top;
a steel box girder is arranged at the upper part of the spherical hinge assembly;
a space diagonal brace is arranged at the upper part of the steel box girder, and the steel truss girder is supported at the upper part of the space diagonal brace;
taking the central line of the spherical hinge assembly as the central line of the rotator, and performing steel truss girder pier top rotator;
a first supporting foot is arranged at the lower part of one end of the steel box girder;
a bracket beam is arranged at the other end of the steel box girder, a second supporting leg is arranged at the lower part of the bracket beam, an auxiliary truss diagonal brace is arranged at the upper part of the bracket beam, and the upper part of the auxiliary truss diagonal brace supports the steel truss girder;
and a first slideway and a second slideway are respectively arranged at the positions of the pier top, which correspond to the first supporting leg and the second supporting leg, and are used for enabling the first supporting leg and the second supporting leg to move along the first slideway and the second slideway respectively.
2. The eccentric arrangement method of the upper turntable of the curved steel truss girder according to claim 1, wherein,
a first supporting foot 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 the pier top and the positions of the first supporting leg and the third supporting leg, which correspond to each other, are respectively provided with a first slide way and a third slide way, and the first slide way and the third slide way are used for enabling the first supporting leg and the third supporting leg to move along the first slide way and the third slide way respectively.
3. An eccentric arrangement device of a turntable on a curved steel truss girder is characterized by comprising,
the spherical hinge assembly is arranged at a preset transverse eccentric distance from the center line of the steel truss girder to the pier top, and the center line of the spherical hinge assembly is used as the center line of a swivel body of the pier top of the steel truss girder;
the steel box girder is arranged at the upper part of the spherical hinge assembly;
the space diagonal brace is arranged at the upper part of the steel box girder and supports the steel truss girder;
also included is a method of manufacturing a semiconductor device,
the first supporting feet are 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 feet are arranged at the lower part of the bracket cross beam;
the auxiliary truss diagonal bracing rod is arranged at the upper part of the bracket cross beam and supports the steel truss girder;
the first slide way and the second slide way are respectively arranged at positions of the pier top corresponding to the first supporting leg and the second supporting leg and are used for enabling the first supporting leg and the second supporting leg to move along the first slide way and the second slide way respectively;
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.
4. The eccentric arrangement device of the upper turntable of the curved steel truss girder according to claim 3, further comprising
The first supporting feet are 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 slide way and the third slide way are respectively arranged at positions of the pier top corresponding to the first supporting leg and the third supporting leg and are used for enabling the first supporting leg and the third supporting leg to move along the first slide way and the third slide way respectively.
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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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| 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 CN112854019A (en) | 2021-05-28 |
| CN112854019B true CN112854019B (en) | 2023-06-06 |
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| 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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| CN102116011B (en) * | 2011-01-07 | 2012-12-05 | 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 |
| CN105421248B (en) * | 2015-12-31 | 2018-01-30 | 中铁二十局集团第一工程有限公司 | Large-Span Continuous girder span building up station turns and closure construction method |
| 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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