CN113279339B - Spherical hinge permanent support and upper swivel construction method thereof - Google Patents
Spherical hinge permanent support and upper swivel construction method thereof Download PDFInfo
- Publication number
- CN113279339B CN113279339B CN202110659952.4A CN202110659952A CN113279339B CN 113279339 B CN113279339 B CN 113279339B CN 202110659952 A CN202110659952 A CN 202110659952A CN 113279339 B CN113279339 B CN 113279339B
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- transmission shaft
- rotating assembly
- spherical hinge
- supporting
- driven gear
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
-
- 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
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a spherical hinge permanent support and an upper swivel construction method thereof, wherein an upper rotating assembly and a lower rotating assembly in the spherical hinge permanent support are hinged through the spherical hinge support; the support piece comprises supporting feet, a slide way and a plurality of support pipes, and the lower ends of the support pipes are connected with the lower part of the lower rotating assembly; the slide way is of an annular structure and is fixedly arranged at the top of the supporting tube; the upper ends of the supporting feet are detachably connected with the upper rotating assembly, and the lower ends of the supporting feet correspond to the slide ways; the lower end of the transmission shaft assembly sequentially passes through the upper rotating assembly and the spherical hinge support and then extends into the lower rotating assembly and is fixed with the lower rotating assembly; the driving assembly comprises a motor, a driving gear and a driven gear, the motor is fixedly arranged at the top of the upper rotating assembly, and the driving gear is connected with an output shaft of the motor; the driven gear is fixedly arranged at the upper end of the transmission shaft assembly; the driving gear is meshed with the driven gear.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a spherical hinge permanent support and an upper swivel construction method thereof.
Background
At present, along with the strong development of high-speed railways and highways in China, new routes are crossed with the original roads, and the new routes are often crossed with the existing lines by adopting cantilever pouring, shed frame erecting, swivel construction and other methods. The horizontal turning method of the swivel construction is the construction method which has the least influence on the original route and is safest. However, for a bridge that rotates horizontally at the pier top, in order to provide a slide way and a reaction seat required for rotation, the upper part of the bridge pier needs to be widened as shown in fig. 1, and a bracket is erected to provide a construction platform. Therefore, a large amount of concrete and steel are consumed, and the construction period is prolonged.
In addition, after the swivel is completed, the spherical hinge concrete needs to be sealed and poured first, and then a permanent support is installed. The construction is time-consuming and labor-consuming, and the age difference between the newly cast concrete and the original pier top concrete is too large, so that the newly cast concrete is easy to crack.
Disclosure of Invention
In view of the above problems, a first object of the present invention is to provide a spherical hinge permanent support, which does not need widening treatment on the upper part of a pier, and after the swivel is completed, does not need casting spherical hinge concrete, reduces the concrete consumption, shortens the construction period, and avoids the cracking problem at the joint of new and old concrete.
The second object of the invention is to provide an upper swivel construction method of the spherical hinge permanent support.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The invention relates to a spherical hinge permanent support, which comprises an upper rotating assembly, a lower rotating assembly, a supporting piece, a transmission shaft assembly and a driving assembly, wherein the upper rotating assembly is connected with the lower rotating assembly; the upper rotating assembly is hinged with the lower rotating assembly through a spherical hinge support; the supporting piece comprises supporting feet, sliding ways and supporting tubes, and the lower ends of the supporting tubes are connected with the lower parts of the lower rotating assemblies; the slide way is of an annular structure and is fixedly arranged at the top of the supporting tube; the upper ends of the supporting feet are detachably connected with the upper rotating assembly, and the lower ends of the supporting feet correspond to the slide ways; the lower end of the transmission shaft assembly sequentially penetrates through the upper rotating assembly and the spherical hinge support, then stretches into the lower rotating assembly and is fixed with the lower rotating assembly; the driving assembly comprises a motor, a driving gear and a driven gear, the motor is fixedly arranged at the top of the upper rotating assembly, and the driving gear is connected with an output shaft of the motor; the driven gear is fixedly arranged at the upper end of the transmission shaft assembly; the driving gear is meshed with the driven gear.
The spherical hinge permanent support is characterized in that the upper rotating assembly comprises a beam body and an upper rotary table; the upper turntable is fixedly arranged at the bottom of the beam body; the lower rotating assembly comprises a lower turntable, a pier and a bearing platform; the upper end of the bridge pier is fixedly connected with the lower turntable, and the lower end of the bridge pier is fixedly connected with the bearing platform; the upper turntable and the lower turntable are hinged through the spherical hinge support; the lower ends of the supporting tubes are inserted into the bearing platform, and a plurality of supporting tubes are circumferentially arranged around the periphery of the pier; the motor with the top connected with the driving gear is fixedly arranged on the beam body.
The spherical hinge permanent support is characterized in that the transmission shaft assembly comprises a modularized transmission shaft and a positioning pin shaft, the upper end of the modularized transmission shaft is fixedly connected with the driven gear, and the lower end of the modularized transmission shaft is detachably connected with the positioning pin shaft.
The permanent support of the ball hinge, preferably, the said motor and said driving gear are an even number, the even number of said motors are set up circumferentially around the said driven gear separately, the even number of said driving gears are connected with output shafts of the even number of said motors separately; an even number of the driving gears are respectively meshed with the driven gears.
The spherical hinge permanent support is characterized in that the modularized transmission shaft comprises a plurality of transmission shafts, and the transmission shafts are connected in a detachable mode from head to tail in sequence; the upper end of the transmission shaft at the uppermost layer is fixedly connected with the driven gear, and the lower end of the transmission shaft at the lowermost layer is detachably connected with the positioning pin shaft.
The spherical hinge permanent support is characterized in that a female head is arranged at the lower end of the transmission shaft at the lowest layer, a male head is arranged at the upper end of the positioning pin shaft, and the female head and the male head are riveted; the transmission shafts of two adjacent layers are connected in a matched manner through threads and bolts.
The invention relates to an upper swivel construction method of a spherical hinge permanent support, which comprises the following steps:
1) Pouring a bearing platform and a pier, accurately positioning and installing a spherical hinge support after finishing, and then pouring a lower turntable;
2) Installing a positioning pin shaft at the center of a ball hinge support, and pouring an upper turntable;
3) Erecting a supporting tube, and then pouring a beam body with a reserved transmission shaft duct;
4) The slide way is arranged on the supporting pipe, the lower end of the supporting leg corresponds to the slide way and contacts with the slide way, and the upper end of the supporting leg is arranged at the bottom of the upper turntable;
5) Connecting the multiple sections of transmission shafts into a whole, wherein the transmission shaft at the lowest layer is provided with a female head, and the female head is riveted with a positioning pin shaft with a male head into a whole;
6) The driven gear is fixedly arranged at the upper end of the transmission shaft at the uppermost layer, and a motor connected with the driving gear is fixed on the beam body, so that the driving gear and the driven gear are meshed;
7) The motor rotates, and the motor drives the beam body to rotate around the driven gear by the counter force, so that the rotating process is completed.
Preferably, the upper swivel construction method further continues to execute the following steps after completing the step 7):
8) And sequentially removing the motor, the driving gear, the driven gear, the supporting tube, the slide way and the supporting feet, and hanging the multi-section transmission shaft from the reserved control center, wherein the spherical hinge support and the positioning pin shaft are used as spherical permanent supports of the bridge.
Due to the adoption of the technical scheme, the invention has the following advantages:
1) The invention cancels the traditional traction counterforce seat structure, and replaces the traction device of the hydraulic machine on the conventional pier top by the motor, the driving gear, the driven gear and the modularized transmission shaft assembly which are arranged on the top of the beam body; the supporting pipe is erected, and the slideway conventionally arranged on the pier top is erected on the supporting pipe, so that the pier top is prevented from widening and the supporting construction platform is prevented from being erected, and the consumption of concrete and steel is reduced; the motor, the driving gear, the driven gear, the transmission shaft, the supporting feet and the supporting tube can be reused, so that the device is economical and environment-friendly;
2) The spherical hinge support is used as a swivel spherical hinge in the swivel process, and is used as a permanent support after the swivel is completed, so that the spherical hinge is not required to be subjected to sealing treatment of poured concrete, the concrete consumption is reduced, the construction period is shortened, and the cracking problem of new and old concrete joints is avoided.
3) The invention is suitable for construction design of various upper swivel bridges.
Drawings
FIG. 1 is a schematic view of a conventional pier top swivel structure;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view of the structure of the spherical hinge support according to the present invention;
FIG. 5 is a schematic view of the structure of the present invention after rotation;
fig. 6 is a schematic structural view of the modular driveshaft assembly of this invention.
The reference numerals in the drawings are as follows:
11-a beam body; 12-pier; 13-a spherical hinge support; 14-bearing platform; 21-an electric motor; 22-a drive gear; 23-a driven gear; 24-1-a first drive shaft; 24-2-a second drive shaft; 24-3-positioning pin shafts; 25-upper turntable; 26-a lower turntable; 27-supporting feet; 28-slide way; 29-support tube.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the attached drawings, so that the objects, features and advantages of the present invention will be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.
As shown in fig. 2 to 4, the spherical hinge permanent support provided by the invention comprises an upper rotating assembly, a lower rotating assembly, a supporting piece, a transmission shaft assembly and a driving assembly; the upper rotating component and the lower rotating component are hinged through a spherical hinge support 13; the supporting piece comprises supporting feet 27, sliding ways 28 and supporting tubes 29, and the lower ends of the supporting tubes 29 are connected with the lower part of the lower rotating assembly; the slide way 28 is of an annular structure, and the slide way 28 is fixedly arranged at the top of the supporting tube 29; the upper end of the supporting leg 27 is detachably connected with the upper rotating assembly, and the lower end of the supporting leg corresponds to the slideway 28; when the rotator is performed, the supporting feet 27 can slide in the slide ways 28; the lower end of the transmission shaft assembly sequentially passes through the upper rotating assembly and the spherical hinge support 13 and then extends into the lower rotating assembly and is fixed with the lower rotating assembly; the driving assembly comprises a motor 21, a driving gear 22 and a driven gear 23, wherein the motor 21 is fixedly arranged at the top of the upper rotating assembly, and the driving gear 22 is connected with an output shaft of the motor 21; the driven gear 23 is fixedly arranged at the upper end of the transmission shaft assembly; the driving gear 22 meshes with the driven gear 23. When the motor 21 rotates, the driving gear 22 rotates around the driven gear 23 because the driven gear 23 is fixed, so that the motor 21 drives the upper rotating assembly to rotate by the counter force.
In the above embodiment, it is preferable that the upper rotating assembly includes the beam 11 and the upper turntable 25; the upper turntable 25 is fixedly arranged at the bottom of the beam body 11; the lower rotating assembly comprises a lower turntable 26, a pier 12 and a bearing 14; the upper end of the bridge pier 12 is fixedly connected with the lower turntable 26, and the lower end of the bridge pier is fixedly connected with the bearing platform 14; the upper turntable 25 and the lower turntable 26 are hinged through the spherical hinge support 13; the lower ends of the supporting tubes 29 are inserted into the bearing platforms 14, and a plurality of supporting tubes 29 are circumferentially arranged around the periphery of the pier 12; the motor 21 with the driving gear 22 connected to the top is fixedly arranged on the beam 11.
In the above embodiment, preferably, the transmission shaft assembly includes a modular transmission shaft and a positioning pin 24-3, the upper end of the modular transmission shaft is fixedly connected with the driven gear, and the lower end of the modular transmission shaft is detachably connected with the positioning pin.
In the above embodiment, preferably, as shown in fig. 6, the modular transmission shaft includes a plurality of transmission shafts, and the plurality of transmission shafts are detachably connected end to end in sequence; the upper end of the transmission shaft at the uppermost layer is fixedly connected with the driven gear, and the lower end of the transmission shaft at the lowermost layer is detachably connected with the positioning pin shaft. In this embodiment, the transmission shafts are two sections, namely a first transmission shaft 24-1 and a second transmission shaft 24-2, the upper end of the transmission shaft at the uppermost layer (i.e. the first transmission shaft 24-1) is fixedly connected with the driven gear 23, and the lower end of the transmission shaft at the lowermost layer (i.e. the second transmission shaft 24-2) is detachably connected with the positioning pin shaft 24-3. Therefore, after the swivel is realized, as shown in fig. 5, the first transmission shaft 24-1 and the second transmission shaft 24-2 are hoisted out, the positioning pin shaft 24-3 is left in the spherical hinge support 13, and the spherical hinge support 13 can be used as a bridge permanent support.
It should be noted that: the modulus of the modularized transmission shafts (namely the number of the transmission shafts) is set according to the height of the beam body.
In the above embodiment, it is preferable that the motors 21 and the driving gears 22 are respectively an even number, the even number of motors 21 are respectively circumferentially arranged around the driven gears 23, and the even number of driving gears 22 are respectively connected with the output shafts of the even number of motors 21; an even number of driving gears 22 are respectively meshed with driven gears 23.
In the above embodiment, preferably, as shown in fig. 6, the lower end of the transmission shaft (i.e., the second transmission shaft 24-2) at the lowest layer is provided with a female head, and the upper end of the positioning pin 24-3 is provided with a male head, and the female head and the male head are riveted.
In the above embodiment, preferably, as shown in fig. 6, the transmission shafts of two adjacent layers are connected by screw and bolt fitting.
The invention provides an upper swivel construction method of a spherical hinge permanent support, which comprises the following steps:
1) Pouring a bearing platform 14 and a pier 12, accurately positioning and installing a spherical hinge support 13 after finishing, and then pouring a lower turntable 26;
2) The positioning pin shaft 24-3 is arranged at the center of the spherical hinge support 13, and then the upper turntable 25 is poured;
3) Erecting a supporting pipe 29, and then pouring a beam body 11 with a reserved transmission shaft duct;
4) The slide way 28 is arranged on the supporting pipe 29, the lower end of the supporting leg 27 corresponds to the slide way 28 and contacts with the slide way 28, and the upper end of the supporting leg 27 is arranged at the bottom of the upper turntable 25;
5) The multi-section transmission shafts (namely the first transmission shaft 24-1 and the second transmission shaft 24-2) are connected into a whole, the transmission shaft at the lowest layer is provided with a female head, and the female head is riveted with a positioning pin shaft 24-3 with a male head into a whole;
6) The driven gear 23 is fixedly arranged at the upper end of the transmission shaft at the uppermost layer, and the motor 21 connected with the driving gear 22 is fixed on the beam 11, so that the driving gear 22 and the driven gear 23 are meshed;
7) The motor 21 rotates, and the motor 21 drives the beam 11 to rotate around the driven gear 23 by the counter force, thereby completing the turning process.
In the above embodiment, it is preferable that the following steps are further performed after the completion of step 7):
8) The motor 21, the driving gear 22, the driven gear 23, the supporting tube 29, the slideway 28 and the supporting feet 27 are removed in sequence, the multi-section transmission shaft is hung from the reserved control station to the middle, and the spherical hinge support 13 and the positioning pin 24-3 are used as spherical permanent supports of the bridge.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The spherical hinge permanent support is characterized by comprising an upper rotating assembly, a lower rotating assembly, a supporting piece, a transmission shaft assembly and a driving assembly;
the upper rotating assembly is hinged with the lower rotating assembly through a spherical hinge support;
the supporting piece comprises supporting feet, sliding ways and supporting tubes, and the lower ends of the supporting tubes are connected with the lower parts of the lower rotating assemblies; the slide way is of an annular structure and is fixedly arranged at the top of the supporting tube; the upper ends of the supporting feet are detachably connected with the upper rotating assembly, and the lower ends of the supporting feet correspond to the slide ways;
the lower end of the transmission shaft assembly sequentially penetrates through the upper rotating assembly and the spherical hinge support, then stretches into the lower rotating assembly and is fixed with the lower rotating assembly;
The driving assembly comprises a motor, a driving gear and a driven gear, the motor is fixedly arranged at the top of the upper rotating assembly, and the driving gear is connected with an output shaft of the motor; the driven gear is fixedly arranged at the upper end of the transmission shaft assembly; the driving gear is meshed with the driven gear;
the upper rotating assembly comprises a beam body and an upper rotary table; the upper turntable is fixedly arranged at the bottom of the beam body; the lower rotating assembly comprises a lower turntable, a pier and a bearing platform; the upper end of the bridge pier is fixedly connected with the lower turntable, and the lower end of the bridge pier is fixedly connected with the bearing platform;
the upper turntable and the lower turntable are hinged through the spherical hinge support;
The lower ends of the supporting tubes are inserted into the bearing platform, and a plurality of supporting tubes are circumferentially arranged around the periphery of the pier;
the motor with the top connected with the driving gear is fixedly arranged at Liang Tishang;
the transmission shaft assembly comprises a modularized transmission shaft and a positioning pin shaft, the upper end of the modularized transmission shaft is fixedly connected with the driven gear, and the lower end of the modularized transmission shaft is detachably connected with the positioning pin shaft;
The motors and the driving gears are respectively in an even number, the even number of the motors are respectively circumferentially arranged around the driven gears, and the even number of the driving gears are respectively connected with the output shafts of the even number of the motors; an even number of the driving gears are respectively meshed with the driven gears;
The modularized transmission shaft comprises a plurality of transmission shafts which are connected in a detachable mode from head to tail in sequence; the upper end of the transmission shaft at the uppermost layer is fixedly connected with the driven gear, and the lower end of the transmission shaft at the lowermost layer is detachably connected with the positioning pin shaft.
2. The spherical hinge permanent support according to claim 1, wherein a female head is arranged at the lower end of the transmission shaft at the lowest layer, a male head is arranged at the upper end of the positioning pin shaft, and the female head and the male head are riveted;
The transmission shafts of two adjacent layers are connected in a matched manner through threads and bolts.
3. An upper swivel construction method based on the spherical hinge permanent support according to claim 2, which is characterized by comprising the following steps:
1) Pouring a bearing platform and a pier, accurately positioning and installing a spherical hinge support after finishing, and then pouring a lower turntable;
2) Installing a positioning pin shaft at the center of a ball hinge support, and pouring an upper turntable;
3) Erecting a supporting tube, and then pouring a beam body with a reserved transmission shaft duct;
4) The slide way is arranged on the supporting pipe, the lower end of the supporting leg corresponds to the slide way and contacts with the slide way, and the upper end of the supporting leg is arranged at the bottom of the upper turntable;
5) Connecting the multiple sections of transmission shafts into a whole, wherein the transmission shaft at the lowest layer is provided with a female head, and the female head is riveted with a positioning pin shaft with a male head into a whole;
6) The driven gear is fixedly arranged at the upper end of the transmission shaft at the uppermost layer, and a motor connected with the driving gear is fixed on the beam body, so that the driving gear and the driven gear are meshed;
7) The motor rotates, and the motor drives the beam body to rotate around the driven gear by the counter force, so that the rotating process is completed.
4. The upper swivel construction method as claimed in claim 3, wherein the following steps are further continued after the completion of step 7):
8) And sequentially removing the motor, the driving gear, the driven gear, the supporting tube, the slide way and the supporting feet, and hanging the multi-section transmission shaft from the reserved control center, wherein the spherical hinge support and the positioning pin shaft are used as spherical permanent supports of the bridge.
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CN202110659952.4A CN113279339B (en) | 2021-06-15 | 2021-06-15 | Spherical hinge permanent support and upper swivel construction method thereof |
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CN202110659952.4A CN113279339B (en) | 2021-06-15 | 2021-06-15 | Spherical hinge permanent support and upper swivel construction method thereof |
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CN113279339B true CN113279339B (en) | 2024-06-11 |
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CN113834678B (en) * | 2021-09-23 | 2023-10-24 | 中铁十一局集团第一工程有限公司 | Multi-point support type swivel bridge model test device and test method |
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CN203049467U (en) * | 2012-09-04 | 2013-07-10 | 北京工业大学 | Bridge flat-turning device |
CN103243657A (en) * | 2013-04-24 | 2013-08-14 | 中铁工程设计咨询集团有限公司 | Pier-top rotator structure of bridge and method for constructing connector |
CN203546620U (en) * | 2013-11-06 | 2014-04-16 | 成都中交信达路桥工程有限公司 | Bridge pier bottom rotating system |
CN107119579A (en) * | 2017-06-13 | 2017-09-01 | 中铁武汉勘察设计研究院有限公司 | A kind of Frame Pier swivel bridges and its design and construction method for taking into account traffic above-ground |
CN110144830A (en) * | 2019-04-28 | 2019-08-20 | 中国铁路设计集团有限公司 | A kind of bridge pier top body rotation construction method |
CN214939405U (en) * | 2021-06-15 | 2021-11-30 | 北京工业大学 | Ball hinge permanent support |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11332896B2 (en) * | 2019-02-19 | 2022-05-17 | David Newcomb | Centric pier system and method |
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2021
- 2021-06-15 CN CN202110659952.4A patent/CN113279339B/en active Active
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Publication number | Priority date | Publication date | Assignee | Title |
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CN203049467U (en) * | 2012-09-04 | 2013-07-10 | 北京工业大学 | Bridge flat-turning device |
CN103243657A (en) * | 2013-04-24 | 2013-08-14 | 中铁工程设计咨询集团有限公司 | Pier-top rotator structure of bridge and method for constructing connector |
CN203546620U (en) * | 2013-11-06 | 2014-04-16 | 成都中交信达路桥工程有限公司 | Bridge pier bottom rotating system |
CN107119579A (en) * | 2017-06-13 | 2017-09-01 | 中铁武汉勘察设计研究院有限公司 | A kind of Frame Pier swivel bridges and its design and construction method for taking into account traffic above-ground |
CN110144830A (en) * | 2019-04-28 | 2019-08-20 | 中国铁路设计集团有限公司 | A kind of bridge pier top body rotation construction method |
CN214939405U (en) * | 2021-06-15 | 2021-11-30 | 北京工业大学 | Ball hinge permanent support |
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