CN110820598A - Longitudinal limiting and pushing device for three-main-truss double-layer steel truss arch bridge steel beam - Google Patents
Longitudinal limiting and pushing device for three-main-truss double-layer steel truss arch bridge steel beam Download PDFInfo
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- CN110820598A CN110820598A CN201911238311.0A CN201911238311A CN110820598A CN 110820598 A CN110820598 A CN 110820598A CN 201911238311 A CN201911238311 A CN 201911238311A CN 110820598 A CN110820598 A CN 110820598A
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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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E01D4/00—Arch-type bridges
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Abstract
The invention provides a longitudinal limiting and pushing device for a three-main-truss double-layer steel truss arch bridge steel beam, which comprises two longitudinal-direction distribution beams and two transverse-direction distribution beams, wherein a support for mounting the steel beam is placed on the top surface of a pier body in the middle, jacks are respectively arranged between the two transverse-direction distribution beams and the support, a jack push rod is horizontally arranged, the support realizes the adjustment of the longitudinal-direction bridge position through the jacks on one side of the support, and the jacks on the other side limit the moving position of the support. The longitudinal limiting and pushing device for the arched bridge steel beam is created, a large number of embedded parts do not need to be embedded in the pier body, and reinforcing steel bars only need to be anchored at the embedded parts of the pier top, so that the construction process is simplified, the construction cost is saved, and the longitudinal limiting and pushing device has higher economical efficiency and practicability.
Description
Technical Field
The invention belongs to the field of arch bridge construction, and particularly relates to a longitudinal limiting and pushing device for a three-main-truss double-layer steel truss arch bridge steel beam.
Background
When the main span of the large-span steel truss arch bridge is closed, due to the deformation of the steel beam and the influence of temperature, the longitudinal displacement of the steel beam needs to be adjusted when the closing opening is closed, a large reverse thrust force can be generated after the steel beam is closed, at the moment, the pushing and the limiting of the steel beam need to be realized through the arrangement of a pier top structure, a large number of embedded parts are generally required to be embedded in the pier top of a traditional steel beam pushing limiting device, then, the bracket is arranged on the embedded parts to serve as a jack counter-force device to realize the longitudinal displacement and the limiting of the steel beam, but the longitudinal displacement and the required limiting thrust force are generally more than hundreds of tons or even thousands of tons when the main span of the large-span steel truss arch bridge is closed, and the traditional method has the following: 1. the horizontal thrust of hundreds of tons or even more than thousands of tons needs to be offset by the counter-force bracket and the embedded part, so that the bracket and the embedded part are required to have enough stability, and the construction difficulty is increased. 2. A large number of embedded parts are embedded in the pier top, the accurate position is ensured, and the difficulty of the installation process is high. 3. The embedded part can have the condition of mutual conflict with pier shaft reinforcing bar, both influences the atress of embedded part and influences the stability of pier shaft again, need carry out repairing to pier shaft after the construction moreover, and construction process is numerous and diverse. Therefore, the longitudinal limiting and pushing device has the advantages that the structural design is reasonable, the installation and the dismounting are simple and convenient, and the pier body structure cannot be greatly influenced.
Summary of the invention
In view of this, the invention provides a longitudinal limiting and pushing device which is reasonable in structural design, simple and convenient to install and dismantle and does not have large influence on a pier body structure, and particularly relates to a longitudinal limiting and pushing device for a three-main-truss double-layer steel truss arch bridge steel beam, which is suitable for longitudinal limiting and pushing of the three-main-truss double-layer steel truss arch bridge steel beam in a closure process.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a vertical spacing and thrustor of double-deck steel purlin arch bridge girder steel of three main purlins, include in arch bridge pier shaft top surface setting, with this pier shaft position relatively fixed's frame, the frame includes that two longitudinal bridges are to arranging distribution roof beam and two horizontal bridges to arranging the distribution roof beam, and the support is placed between two parties for the girder steel installation at pier shaft top surface, and two horizontal bridges are to arranging distribution roof beam and support within a definite time and being equipped with the jack respectively, and jack push rod level sets up, and the support passes through one of them side its longitudinal bridge position adjustment is realized to the jack, and its opposite side jack is spacing to support shift position.
Furthermore, the transverse bridge direction distribution beams are in a welded box girder mode, and stiffening plates are respectively arranged at the jacking position of the jack and the force transmission positions of the transverse bridge direction distribution beams and the longitudinal bridge direction distribution beams.
Furthermore, two ends of the bottom surface of the distribution beam arranged in the longitudinal bridge direction are firmly connected with the lifting pads on the side surfaces of the pier body through lifting pad steel plates respectively, and the lifting pad steel plates are connected with the distribution beam arranged in the longitudinal bridge direction in a spot welding mode. ,
furthermore, limiting structures are respectively arranged at two ends of the top surface of the longitudinal bridge direction distribution beam in a protruding mode, the corresponding transverse bridge direction distribution beam is supported by the limiting structures, and the transverse bridge direction distribution beam and the longitudinal bridge direction distribution beam are connected in a spot welding mode.
Furthermore, the distribution beams arranged in the longitudinal bridge direction are anchored on the top surface of the pier body through anchoring steel bars.
Further, the anchor reinforcing bar includes half section under the reinforcing bar and the reinforcing bar of the first section of reinforcing bar of connecting through steel bar connector, and half section is pre-buried to the pier shaft under this reinforcing bar, half section top is less than pier shaft top surface setting under the reinforcing bar, and half section setting is on indulging the bridge to arranging the distributive girder, and half section protrusion longitudinal girder is to arranging the setting of distributive girder bottom surface on the reinforcing bar.
Furthermore, stiffening plates are respectively arranged on the two sides of the anchoring steel bar installation position of the longitudinal bridge direction distribution beam and the force transmission position of the transverse bridge direction distribution beam.
Compared with the prior art, the longitudinal limiting and pushing device for the arch bridge steel beam has the following advantages:
compared with the prior art, the longitudinal limiting and pushing device for the arch bridge steel beam is clear in structural stress, high in safety and reliability, free of embedding a large number of embedded parts on the pier body and only needs to anchor reinforcing steel bars at the embedded part of the pier top, small in influence on the pier body structure, convenient to install and dismantle, capable of greatly simplifying construction procedures, capable of being continuously used for bridge construction similar to the pier body structure and saving construction cost. Has higher economical efficiency and practicability.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a cross-sectional view of FIG. 1 taken along line 1- -1;
FIG. 3 is a cross-sectional view 2-2 of FIG. 1;
fig. 4 is a perspective view of the reinforcing bar coupler.
Description of reference numerals:
1-a jack; 2-distributing beams are arranged in the transverse bridge direction; 3-arranging distribution beams in the longitudinal bridge direction; 4-pier body; 5, cushion blocks; 6-a cushion stone; 7-support; 8-anchoring the steel bars; 81-lower section of steel bar; 82-the upper half section of the steel bar; 9-a steel beam; 10-supporting the stack; 11-a mat steel plate; 12-a stiffening plate; 13-reinforcing bar connector.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
As shown in fig. 1-3, the invention provides a longitudinal limiting and pushing device for a three-main-truss double-layer steel truss arch bridge steel beam, which realizes the limiting and pushing of the steel beam through a jack 1, a transverse bridge direction arrangement distribution beam 2 and a longitudinal bridge direction arrangement distribution beam 3.
In the pier shaft 4 pouring process, half section 81 under the embedded steel bar of 4 top surfaces design position of pier shaft, half section 81 top under the steel bar will be less than 4 top surfaces of pier shaft, pier shaft 4 accomplishes the construction back, the installation is indulged the bridge and is to arranging distribution roof beam 3 to design position, according to the steel bar connector 13 that fig. 4 shows, make half section 82 be connected with half section 81 under the steel bar on the steel bar to fixed longitudinal bridge is to arranging distribution roof beam 3, steel bar connector 13 is the steel bar connection common part, do not describe here again. In the construction process of arranging the distribution beams 3 in the longitudinal direction, the distribution beams 3 in the longitudinal direction and the pier bodies 4 are firmly shoveled by the shoveling and supporting steel plates 11, and then the shoveling and supporting steel plates 11 and the distribution beams 3 in the longitudinal direction are spot-welded to prevent the shoveling and supporting steel plates from falling off. Limiting structures are respectively arranged at two ends of the top surface of the longitudinal direction distribution beam 3 in a protruding mode, the corresponding transverse direction distribution beam 2 is supported by the limiting structures, and the transverse direction distribution beam 2 is welded to the longitudinal direction distribution beam 3 through spot welding after being placed. 4 jacks 1 are arranged at the positions of two sides of a support 7 for mounting a steel beam 9, in order to improve the strength of a transverse bridge direction distribution beam 2 during operation of the jacks 1, a stiffening plate 12 is arranged at the position, corresponding to the jack 1, of the transverse bridge direction distribution beam 2, the jack 1 is jacked at the position of the stiffening plate 12 of the transverse bridge direction distribution beam 2, a support pile 10 for supporting the jack 1 is arranged on a pier body 4 according to the elevation of the jack 1, the jack 1 is arranged on the corresponding support pile 10, and a cushion block 5 is used for lifting and cushioning between the jack 1 and the support 7. Before the steel beam 9 is installed, the support 7 is installed at a theoretical position, the upper swing center of the support 7 is coincided with the center line of the pier, and finally the steel beam 9 is erected. In the working process of the device, the counter force generated by pushing and limiting is transmitted to the transverse bridge direction distribution beam 2 by the jack 1, then transmitted to the longitudinal bridge direction distribution beam 3 by the transverse bridge direction distribution beam 2 and finally transmitted to the pier body 4. When the whole bridge of the steel beam 9 moves longitudinally, only one jack 1 on one side performs a pushing action, the jack 1 on the other side is used for limiting and protecting, and all the jacks 1 are required to be provided with mechanical locking structures, for example, the jacks adopt screw jack structures.
In this embodiment, the processing quality of the distribution beams 2 arranged in the transverse direction and the distribution beams 3 arranged in the longitudinal direction are strictly guaranteed during processing, when the distribution beams 2 arranged in the transverse direction and the distribution beams 3 arranged in the longitudinal direction adopt welded box beam type structures, groove welding is respectively adopted when a web plate and a top plate and when the web plate and a bottom plate are welded, and in order to improve the stress strength, stiffening plates 12 are respectively arranged at main stress positions of the distribution beams 2 arranged in the transverse direction and the distribution beams 3 arranged in the longitudinal direction. This embodiment is because the atress requirement, in the horizontal bridge to arranging distributor beam 2 and indulge the bridge to arranging 3 top bottom plates of distributor beam and web surface on laminating steel sheet structure, should paste steel sheet structure outward except that need enclose to weld all around still need perforate the plug welding in the trompil on this laminating steel sheet, guarantee that the laminating steel sheet closes its corresponding welding part firm connection.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a vertical spacing and thrustor of double-deck steel purlin arched bridge girder steel of three main purlins which characterized in that: including set up at arched bridge pier shaft (4) top surface, with this pier shaft (4) position relatively fixed's frame, the frame includes that two longitudinal bridges are to arranging distribution roof beam (3) and two cross bridges are to arranging distribution roof beam (2), place between two parties at pier shaft top surface with support (7) in girder steel (9) installation, and two cross bridges are to arranging distribution roof beam (2) and support (7) within a definite time and being equipped with jack (1) respectively, and jack (1) push rod level sets up, and support (7) are through its one side jack (1) realize its longitudinal bridge position adjustment, and its opposite side jack (1) is spacing to support (7) shift position.
2. The longitudinal spacing and pushing device of a three-main-truss double-layer steel truss arch bridge steel beam as claimed in claim 1, wherein: the transverse bridge direction distribution beams (2) are in a welded box girder mode, and stiffening plates (12) are respectively arranged at the jacking position of the jacks and the force transmission positions of the transverse bridge direction distribution beams (2) and the longitudinal bridge direction distribution beams (3).
3. The longitudinal spacing and pushing device of a three-main-truss double-layer steel truss arch bridge steel beam as claimed in claim 1, wherein: two ends of the bottom surface of the distribution beam (3) arranged in the longitudinal bridge direction are firmly shoveled and cushioned with the side surface of the pier body (4) through shoveling and cushioning steel plates (11), and the shoveling and cushioning steel plates (11) are connected with the distribution beam (3) arranged in the longitudinal bridge direction in a spot welding mode.
4. The longitudinal spacing and pushing device of a three-main-truss double-layer steel truss arch bridge steel beam as claimed in claim 3, wherein: limiting structures are respectively arranged at two ends of the top surface of the longitudinal bridge direction distribution beam (3) in a protruding mode, the corresponding transverse bridge direction distribution beam (2) is supported through the limiting structures, and the transverse bridge direction distribution beam (2) and the longitudinal bridge direction distribution beam (3) are connected in a spot welding mode.
5. The longitudinal spacing and pushing device of a three-main-truss double-layer steel truss arch bridge steel beam as claimed in claim 4, wherein: the distribution beam (3) arranged in the longitudinal bridge direction is anchored on the top surface of the pier body (4) through an anchoring steel bar (8).
6. The longitudinal spacing and pushing device of a three-main-truss double-layer steel truss arch bridge steel beam as claimed in claim 5, wherein: anchoring reinforcing bar (8) include through half section (82) under reinforcing bar and the reinforcing bar of reinforcing bar connector (13) connection half section (81), half section is pre-buried to pier shaft (4) under this reinforcing bar, half section (81) top is less than pier shaft (4) top surface setting under the reinforcing bar, and half section (82) setting is on indulging the bridge to arranging distribution roof beam (3), and half section (82) protrusion is indulged the bridge and is set up to arranging distribution roof beam (3) bottom surface on the reinforcing bar.
7. The longitudinal spacing and pushing device of a three-main-truss double-layer steel truss arch bridge steel beam as claimed in claim 4, wherein: and stiffening plates (12) are respectively arranged on the two sides of the mounting position of the anchoring steel bar (8) of the longitudinal bridge direction distribution beam (3) and the force transmission position of the transverse bridge direction distribution beam (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911238311.0A CN110820598A (en) | 2019-12-05 | 2019-12-05 | Longitudinal limiting and pushing device for three-main-truss double-layer steel truss arch bridge steel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911238311.0A CN110820598A (en) | 2019-12-05 | 2019-12-05 | Longitudinal limiting and pushing device for three-main-truss double-layer steel truss arch bridge steel beam |
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| CN110820598A true CN110820598A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911238311.0A Pending CN110820598A (en) | 2019-12-05 | 2019-12-05 | Longitudinal limiting and pushing device for three-main-truss double-layer steel truss arch bridge steel beam |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636291A (en) * | 2020-05-22 | 2020-09-08 | 中铁上海工程局集团有限公司 | Recyclable door type steel cover beam pre-embedding device |
| CN112030776A (en) * | 2020-08-25 | 2020-12-04 | 中铁大桥局第七工程有限公司 | Bridge floating-towing erection method |
| CN112030780A (en) * | 2020-08-19 | 2020-12-04 | 中铁大桥局第七工程有限公司 | Steel arch bridge cantilever erection method |
| CN112900284A (en) * | 2021-03-10 | 2021-06-04 | 中铁二十局集团第六工程有限公司 | Positioning and mounting method for spherical hinge support |
| CN113047158A (en) * | 2021-02-07 | 2021-06-29 | 中铁四局集团有限公司 | Temporary limiting device for steel truss multidirectional movable support under action of high mountain valley wind load |
| CN114016431A (en) * | 2021-12-21 | 2022-02-08 | 中铁大桥局第七工程有限公司 | Steel truss arch main pier support positioning and mounting method |
| CN114319131A (en) * | 2022-01-14 | 2022-04-12 | 上海天演建筑物移位工程股份有限公司 | Arch bridge jacking device and jacking method thereof |
| CN114319079A (en) * | 2022-01-14 | 2022-04-12 | 江苏沪宁钢机股份有限公司 | Upper and lower double-layer steel bridge girder falling structure of highway bridge and railway bridge and girder falling method thereof |
| CN114438898A (en) * | 2022-02-26 | 2022-05-06 | 安徽省公路桥梁工程有限公司 | Butt joint device for mounting distribution beam for steel beam pushing construction and use method thereof |
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2019
- 2019-12-05 CN CN201911238311.0A patent/CN110820598A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111636291A (en) * | 2020-05-22 | 2020-09-08 | 中铁上海工程局集团有限公司 | Recyclable door type steel cover beam pre-embedding device |
| CN112030780A (en) * | 2020-08-19 | 2020-12-04 | 中铁大桥局第七工程有限公司 | Steel arch bridge cantilever erection method |
| CN112030776A (en) * | 2020-08-25 | 2020-12-04 | 中铁大桥局第七工程有限公司 | Bridge floating-towing erection method |
| CN113047158A (en) * | 2021-02-07 | 2021-06-29 | 中铁四局集团有限公司 | Temporary limiting device for steel truss multidirectional movable support under action of high mountain valley wind load |
| CN113047158B (en) * | 2021-02-07 | 2023-02-24 | 中铁四局集团有限公司 | Temporary limiting device for steel truss multidirectional movable support under action of high mountain valley wind load |
| CN112900284A (en) * | 2021-03-10 | 2021-06-04 | 中铁二十局集团第六工程有限公司 | Positioning and mounting method for spherical hinge support |
| CN114016431A (en) * | 2021-12-21 | 2022-02-08 | 中铁大桥局第七工程有限公司 | Steel truss arch main pier support positioning and mounting method |
| CN114319131A (en) * | 2022-01-14 | 2022-04-12 | 上海天演建筑物移位工程股份有限公司 | Arch bridge jacking device and jacking method thereof |
| CN114319079A (en) * | 2022-01-14 | 2022-04-12 | 江苏沪宁钢机股份有限公司 | Upper and lower double-layer steel bridge girder falling structure of highway bridge and railway bridge and girder falling method thereof |
| CN114319079B (en) * | 2022-01-14 | 2023-08-01 | 江苏沪宁钢机股份有限公司 | Double-deck steel bridge girder falling structure and girder falling method for highway bridge and railway bridge |
| CN114319131B (en) * | 2022-01-14 | 2024-03-26 | 上海天演建筑物移位工程股份有限公司 | Arch bridge jacking device and jacking method thereof |
| CN114438898A (en) * | 2022-02-26 | 2022-05-06 | 安徽省公路桥梁工程有限公司 | Butt joint device for mounting distribution beam for steel beam pushing construction and use method thereof |
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