CN113106877B - Existing bridge rotation utilization method - Google Patents
Existing bridge rotation utilization method Download PDFInfo
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- CN113106877B CN113106877B CN202110250004.5A CN202110250004A CN113106877B CN 113106877 B CN113106877 B CN 113106877B CN 202110250004 A CN202110250004 A CN 202110250004A CN 113106877 B CN113106877 B CN 113106877B
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling 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
- 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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Abstract
The invention discloses a method for utilizing an existing bridge rotating body. The invention provides an existing bridge rotating utilization method and vehicle-mounted equipment of an existing bridge obliquely crossing with an existing expressway under the operation condition, aiming at the problem that the existing overpass bridge needs to be dismantled and rebuilt in the reconstruction and expansion of the expressway, which can comprehensively realize the comprehensive effect of safety, greenness, economy, quickness and low traffic influence, accord with the development concept of innovation, coordination, greenness, openness and sharing, and have remarkable economic value and social benefit.
Description
Technical Field
The invention relates to the field of bridge construction. More specifically, the invention relates to a utilization method of an existing bridge swivel.
Background
2 or 4 lanes need to be added after the highway is rebuilt, and the original upper-span bridges (pedestrian bridges, vehicle bridges, aqueducts, ramp bridges, overpasses and the like) crossing the highway need to be dismantled and rebuilt because the original road pier occupies the widened lane. In the traditional construction of dismantling the cross-line bridge in the highway reconstruction and expansion project, direct chiseling, blasting dismantling, support erection and cutting hoisting removal or vehicle-mounted support removal after segmented cutting are generally adopted under the totally-closed or semi-enclosed condition, and direct chiseling and cutting hoisting removal are mostly adopted for the non-cross-road part. The reconstruction construction mostly adopts the structural form of an assembled small box girder and a steel-concrete composite girder, and the prefabricated girder is usually erected by adopting equipment such as a truck crane, a bridge girder erection machine, a gantry crane and the like under the condition of totally-enclosed or semi-enclosed traffic. The bridge road-involved dismantling and construction has large influence on the traffic of the highway (long road-occupying construction time), the construction and traffic organization is complex, and the problems of safety, traffic, progress and environmental protection are prominent, so that the bridge road-involved dismantling and construction method can not meet the requirements of modern people on beautiful life and the requirements of building a healthy green low-carbon circular development economic system.
In addition, bridge swivel construction has been widely used in bridge engineering due to its unique advantages. At present, a swivel construction method for a bridge superstructure mainly comprises (1) a swivel support construction method for a overpass bridge, particularly an existing railway bridge, wherein a beam body rotates around a pier column plane; (2) a vehicle set support type integral carrying construction method during bridge integral span erection is characterized in that a beam moves and turns together with a moving vehicle set on a vehicle-mounted support, and the position of the beam at a longer distance changes in the process.
Therefore, aiming at the difficult problem that the existing overpass bridge needs to be dismantled and rebuilt in the reconstruction and expansion of the expressway, the existing bridge rotating utilization method and the vehicle-mounted equipment of the bridge obliquely crossed with the expressway under the operation condition of the expressway are provided, the comprehensive effect of safety, greenness, economy, quickness and low traffic influence can be comprehensively realized, the development concept of innovation, coordination, greenness, openness and sharing is met, and the expressway bridge rotating utilization method and the vehicle-mounted equipment have obvious economic value and social benefit.
Disclosure of Invention
The invention aims to provide a bridge rotating body utilization method and vehicle-mounted equipment thereof.
To achieve these and other advantages and in accordance with the purpose of the present invention, a method for utilizing a swivel of an existing bridge is provided, in which at least two sets of vehicle-mounted equipment supporting beam bodies are arranged transversely along a bridge direction, and the vehicle-mounted equipment sets drive the beam bodies to rotate around a rotation center to a design position.
Preferably, the method specifically comprises the following steps:
1) carrying out high-flatness treatment on the transportation path of the vehicle-mounted equipment, and ensuring that the foundation has enough bearing capacity; simultaneously carrying out new bridge position lower part structure and bridge head wiring construction;
2) vehicle-mounted equipment is arranged near each pier and abutment to ensure that the train set does not touch the piers and abutments in the rotation process, so that a multi-point supporting and shifting system is formed;
3) arranging a monitoring system: monitoring the stress and deformation of the initial state of the bridge structure, the supporting state of vehicle-mounted equipment, the rotating construction process and the synchronous lifting process;
4) clearing all obstacles in the rotation process of the beam body;
5) synchronously jacking the beam body;
6) each vehicle-mounted device synchronously rotates around the rotation center of the beam body by a set angle;
7) synchronously jacking the beam body, and dropping the beam onto a new support;
8) and the construction of the rest part of the bridge abutment is perfected, and the connection of auxiliary facilities and approach roads of the bridge deck is perfected.
Preferably, the vehicle-mounted equipment consists of a vehicle group, a supporting device, a regulating device and an auxiliary facility.
Preferably, the train set consists of a power system, a train body and a control system.
Preferably, the supporting means comprises a lower support, an upper support and a fixing means; the lower support provides a support platform for the upper support, and the fixing device is used for fixedly connecting the vehicle group and the supporting device.
Preferably, the regulating device is arranged above the supporting device and used for regulating the overall height of the supporting system and the fit between the supporting device and the supported structure.
Preferably, the auxiliary facilities comprise a ladder stand, a platform and a signboard; the crawling ladder and the platform are used for constructors to install the regulating device and the monitoring system.
Preferably, when the rotation center is positioned at the original support position of the bridge, a turntable support is arranged at the rotation center; the method specifically comprises the following steps:
in the step 5), when the rotating center is supported by a turntable, after the beam body is synchronously jacked, the turntable is supported and installed, and then the beam is dropped;
and 7), when the rotating center adopts the turntable support, after the beam body is synchronously jacked, the turntable support is dismantled, and a new support is installed.
Preferably, the mounting of the turntable support comprises the steps of:
A1. releasing the support restraint at the supporting position of the turntable to be installed, jacking the beam body, and dismantling the support; if the space of the pier top is insufficient, the section of the pier column is enlarged, and a jack is placed on the enlarged section;
A2. a first steel plate is arranged at the bottom of the beam through foundation bolts, a sliding plate with a low friction coefficient (the friction coefficient is between 0.02 and 0.06) is arranged below the steel plate, and the beam body can easily slide through the sliding plate;
A3. leveling a support base cushion by adopting high-strength mortar, burying a second steel plate, and welding a limiting device on the second steel plate;
A4. the beam body is dropped on the second steel plate as described in step a3.
The invention at least comprises the following beneficial effects: the invention has the advantages of safety, greenness, economy, low traffic influence, quick construction, good adaptability, wide application prospect and the like.
(1) Safe and reliable: the vehicle-mounted supporting system is a molded product, and the safety of all components of the system is high; the construction process has no special process, stable working condition, convenient control and small construction technical risk; the road occupation range is small and the time is short in the construction process, so that the safety risk in the over-line construction process is greatly reduced.
(2) Green and environment-friendly: the energy consumption caused by repeated hoisting, loading, unloading and transferring is reduced or avoided, large-scale power utilization facilities are reduced or avoided, the resource recycling of old bridges is realized, and a standardized rotatable support is adopted, so that the energy, the land, the water, the materials and the environment are comprehensively saved.
(3) Economy: the old bridge is directly utilized after the rotation at the minimum distance and angle, the removal and reconstruction of the overpass bridge are avoided, the large cost for removing the old bridge and constructing a new bridge under the condition of multiple traffic relief is saved, and the existing substructure of the old bridge is utilized to the maximum extent; meanwhile, the total construction period is shortened as soon as possible, systematic investment is reduced, road network charging is guaranteed, and traffic jam and traffic detour consumption and delay cost are saved. And the device mainly comprises market forming products, is simple to assemble and process, and realizes that the cost of the device is lower.
(4) Low traffic impact: the method avoids bridge dismantling and building, only needs to close traffic for 3 hours (can be at night) when the bridge is rotated for construction, the construction is rapid, and traffic jam and long-term detour are greatly reduced or avoided.
(5) The adaptability is good: the method is suitable for continuous box girder bridges and also suitable for steel box girder bridges; the bridge is suitable for a bridge on a highway reconstruction and extension project and is also suitable for a municipal bridge.
(6) The application prospect is wide: the method for implementing the existing bridge rotation body recycling shows good technical characteristics and excellent economic performance, is very suitable for bridge-spanning dismantling reconstruction on highway reconstruction and expansion projects and municipal bridge reconstruction projects, and has good application prospect.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of step 1);
FIG. 2 is a schematic view of a support device arrangement;
FIG. 3 is a front assembled view of the vehicle accessory;
FIG. 4 is a top plan view of the vehicle accessory assembly;
FIG. 5 is a schematic view of vehicle-mounted equipment arranged near each bridge pier and abutment;
FIG. 6 is a schematic view of the transportation of the vehicle equipment to a designated location under the beam;
FIG. 7 is a schematic view of the erection of upper and lower bridge passages at the middle pier;
FIG. 8 is a side view of the erection of upper and lower bridge passages at the middle pier;
FIG. 9 is a schematic view of a turntable support arrangement;
FIG. 10 is a schematic view of a bridge swivel in general elevation;
FIG. 11 is a schematic view of the cross-section A-A of FIG. 10 showing the in-vehicle support system;
FIG. 12 is a schematic view of the vehicle support system taken at section B-B of FIG. 10;
FIG. 13 is a schematic general plan view of a bridge swivel utilization;
FIG. 14 is a schematic view of a turntable support.
Description of reference numerals: the construction method comprises the following steps of 1 construction site, 2 moving and transporting paths, 3 material and equipment stacking sites, 4 highways, 5 supporting devices, 6 lower supports, 7 upper supports, 8 vehicle groups, 9 vehicle-mounted equipment, 10 upper and lower bridge channels, 11 water horse conical barrels, 12 enlarged cross sections, 13 jacks, 14 first steel plates, 15 sliding plates, 16 second steel plates, 17 beam bodies and 18 baffle plates.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The invention provides a method for utilizing an existing bridge swivel, which comprises the following steps of:
1) as shown in fig. 1, the construction site and the vehicle-mounted equipment moving path are leveled and hardened, so that the foundation reaches a certain bearing capacity, and the normal construction can be ensured as a reference; the construction site and the moving path can be shared, and meanwhile, the widened roadbed can be fully utilized as a material and equipment stacking site; and simultaneously carrying out new bridge position substructure and bridgehead wiring construction.
2) The vehicle-mounted equipment consists of a vehicle group, a supporting device, a regulating device and auxiliary facilities, and has a three-direction (transverse, vertical and longitudinal) regulating function. The train set comprises a power system, a train body and a control system, wherein the power system provides traction, the train body bears a supporting device, and the control system has the functions of lifting, braking, emergency braking and the like. The supporting device comprises a lower support, an upper support and a fixing device; the lower support provides supporting platform for last support, it can be multiple structural style such as shaped steel stand, bailey roof beam to go up the support, fixing device is used for fixed connection group of cars and strutting arrangement. The adjusting and controlling device is arranged above the supporting device, is a jack, a leveling cushion block or the combination of the jack and the leveling cushion block and is used for adjusting the overall height of the supporting system and adjusting the fit degree between the supporting device and the supported structure; the leveling cushion block can select various material forms such as wood, rubber and the like according to the required traction static friction force. The auxiliary facilities comprise a ladder stand, a platform and a signboard; the ladder stand and the platform are used for constructors to install the regulating device and the monitoring system.
As shown in fig. 2-4, the vehicle-mounted equipment is assembled: firstly, mounting the lower support on a hardened foundation, mounting an upper support on the lower support, and then mounting an auxiliary facility on the upper support; after the support devices are assembled, the vehicle set drills into and lifts the support devices, and the lower supports are removed.
3) As shown in fig. 5 to 6 and 10 to 12, vehicle-mounted equipment is arranged near each pier and abutment, and the vehicle-mounted equipment is in place: the vehicle-mounted equipment is inspected to be qualified and then runs to a specified position below the beam, so that the vehicle set is ensured not to touch a pier and an abutment in the rotating process, and a multi-point supporting and shifting system is formed;
4) arranging a monitoring system: monitoring the stress and deformation of the initial state of the bridge structure, the supporting state of vehicle-mounted equipment, the rotating construction process and the synchronous lifting process, and well constructing traffic organization;
5) as shown in figures 7-8, a water-jet cone-shaped barrel is adopted to seal a half bridge floor, an upper bridge passage and a lower bridge passage are erected at a middle pier, and the middle pier is reformed.
6) Clearing all obstacles in the rotation process of the beam body, including: abutment, billboard, signal tower, telegraph pole, forest and the like;
7) in this embodiment, the rotation center is located at the original support of the bridge, and the turntable supports are installed on the bridge piers and the bridge bodies corresponding to the rotation center because the environmental conditions do not allow or reduce the traffic influence on the road-crossing part; specifically, after the beam body is synchronously jacked, the turntable is supported and installed, and then the beam falls.
As shown in fig. 9 and 14, the mounting of the turntable support comprises the following steps:
A1. releasing the support restraint at the supporting position of the turntable to be installed, jacking the beam body, and dismantling the support; if the space of the pier top is insufficient, the section of the pier column is enlarged, and a jack is placed on the enlarged section;
A2. a first steel plate is installed at the bottom of the beam through foundation bolts, a sliding plate with a low friction coefficient (the friction coefficient is between 0.02 and 0.06) is installed below the steel plate, and the beam body can easily slide through the sliding plate;
A3. leveling a support base cushion stone by adopting high-strength mortar, burying a second steel plate, and welding a limiting device on the second steel plate, wherein the limiting device is a plurality of baffle plates which are arranged around the periphery of the sliding plate;
A4. the beam body is dropped on the second steel plate as described in step a3.
8) Each vehicle-mounted device slowly and synchronously rotates around the rotation center of the beam body for a set angle; the bridge rotation process is monitored in real time, and the transverse force of the reinforced beam body is monitored.
9) Synchronously jacking the beam body, dismantling the turntable support, installing a new support, and dropping the beam onto the new support.
10) And the construction of the rest part of the bridge abutment is perfected, and the connection of auxiliary facilities and approach roads of the bridge deck is perfected.
11) And (5) recovering the site and recovering the traffic.
The beam body rotates in the plane through the vehicle-mounted equipment to realize beam body rotation recycling, is not only suitable for the conditions in embodiment 1, but also suitable for the conditions of single piers, 2 piers, 3 piers and the like (not limited by the number of the piers), and the pier column at the rotating center can be a single-column pier or other structural forms. Namely: the method does not limit the number of bridge spans, the structural form of pier columns and the position of a rotation center of swivel construction.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (8)
1. A method for utilizing an existing bridge swivel is characterized in that at least two sets of vehicle-mounted equipment supporting beam bodies are transversely arranged along the bridge direction, and a vehicle-mounted equipment group drives the beam bodies to rotate to a designed position around a rotation center;
the method specifically comprises the following steps:
1) carrying out high-flatness treatment on the transportation path of the vehicle-mounted equipment, and ensuring that the foundation has enough bearing capacity; simultaneously carrying out new bridge position lower part structure and bridge head wiring construction;
2) vehicle-mounted equipment is arranged near each pier and abutment to ensure that the train set does not touch the piers and abutments in the rotating process to form a multi-point supporting and shifting system;
3) arranging a monitoring system: monitoring the stress and deformation of the initial state of the bridge structure, the supporting state of vehicle-mounted equipment, the rotating construction process and the synchronous lifting process;
4) clearing all obstacles in the rotation process of the beam body;
5) synchronously jacking the beam body;
6) each vehicle-mounted device synchronously rotates around the rotation center of the beam body by a set angle;
7) synchronously jacking the beam body, and dropping the beam onto a new support;
8) and the construction of the rest part of the bridge abutment is perfected, and the connection of auxiliary facilities and approach roads of the bridge deck is perfected.
2. The existing bridge turning utilization method according to claim 1, wherein the vehicle-mounted equipment consists of a train set, a supporting device, a regulating device and an auxiliary facility.
3. The existing bridge turning body utilization method according to claim 2, wherein the train set consists of a power system, a train body and a control system.
4. The existing bridge swivel utilization method according to claim 2, wherein the support means comprises a lower support, an upper support and a fixing means; the lower support provides a support platform for the upper support, and the fixing device is used for fixedly connecting the vehicle group and the supporting device.
5. The existing bridge swivel utilization method according to claim 2, wherein the adjusting and controlling device is disposed above the supporting device for adjusting the overall height of the supporting system and adjusting the degree of engagement between the supporting device and the supported structure.
6. The existing bridge swivel utilization method of claim 2, wherein the auxiliary facilities include a ladder, a platform, a signboard; the ladder stand and the platform are used for constructors to install the regulating device and the monitoring system.
7. The existing bridge swivel utilization method according to claim 1, wherein when the rotation center is located at the original bridge support, a turntable support is installed; the method specifically comprises the following steps:
in the step 5), when the rotating center is supported by a turntable, after the beam body is synchronously jacked, the turntable is supported and installed, and then the beam is dropped;
and 7), when the rotating center adopts the turntable support, after the beam body is synchronously jacked, the turntable support is dismantled, and a new support is installed.
8. The existing bridge swivel utilization method of claim 7, wherein the installation of the turntable support comprises the steps of:
A1. releasing the support restraint at the supporting position of the turntable to be installed, jacking the beam body, and dismantling the support; if the space of the pier top is insufficient, the section of the pier column is enlarged, and a jack is placed on the enlarged section;
A2. a first steel plate is installed at the bottom of the beam through foundation bolts, a sliding plate with low friction coefficient is installed below the steel plate, and the beam body can easily slide through the sliding plate;
A3. leveling a support base cushion by adopting high-strength mortar, burying a second steel plate, and welding a limiting device on the second steel plate;
A4. the beam body is dropped on the second steel plate as described in step a3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110250004.5A CN113106877B (en) | 2021-03-08 | 2021-03-08 | Existing bridge rotation utilization method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110250004.5A CN113106877B (en) | 2021-03-08 | 2021-03-08 | Existing bridge rotation utilization method |
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| CN113106877A CN113106877A (en) | 2021-07-13 |
| CN113106877B true CN113106877B (en) | 2022-06-17 |
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| CN113774807A (en) * | 2021-09-29 | 2021-12-10 | 安徽省公路桥梁工程有限公司 | Upper-span bridge swivel construction method applied to narrow and limited operation space |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007162402A (en) * | 2005-12-16 | 2007-06-28 | Yokogawa Bridge Corp | Turning device for bridge construction |
| CN107489109A (en) * | 2017-09-19 | 2017-12-19 | 武船重型工程股份有限公司 | A kind of rotating device of bridge subsection |
| CN108774955A (en) * | 2018-01-18 | 2018-11-09 | 重庆溢权科技发展有限公司 | A kind of Bridge Rotation Construction Technique intelligence control system |
| CN110130231A (en) * | 2019-05-20 | 2019-08-16 | 中铁武汉勘察设计研究院有限公司 | A kind of combination support bridge plane swivel system |
| CN110528405A (en) * | 2019-05-28 | 2019-12-03 | 武汉二航路桥特种工程有限责任公司 | Bridge big height lifting and translocating equipment and its construction method based on vehicle group |
-
2021
- 2021-03-08 CN CN202110250004.5A patent/CN113106877B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007162402A (en) * | 2005-12-16 | 2007-06-28 | Yokogawa Bridge Corp | Turning device for bridge construction |
| CN107489109A (en) * | 2017-09-19 | 2017-12-19 | 武船重型工程股份有限公司 | A kind of rotating device of bridge subsection |
| CN108774955A (en) * | 2018-01-18 | 2018-11-09 | 重庆溢权科技发展有限公司 | A kind of Bridge Rotation Construction Technique intelligence control system |
| CN110130231A (en) * | 2019-05-20 | 2019-08-16 | 中铁武汉勘察设计研究院有限公司 | A kind of combination support bridge plane swivel system |
| CN110528405A (en) * | 2019-05-28 | 2019-12-03 | 武汉二航路桥特种工程有限责任公司 | Bridge big height lifting and translocating equipment and its construction method based on vehicle group |
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Inventor after: Yue Shaolin Inventor after: Zhu Cixiang Inventor after: Zeng Wenfeng Inventor after: Wang Shaoxu Inventor before: Zhu Cixiang Inventor before: Yue Shaolin Inventor before: Jiang Lang Inventor before: Zeng Wenfeng Inventor before: Wang Shaoxu |
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Address after: Room 2101-2104, 21 / F, unit a, block a, Hubei science and technology venture building, Xiaohongshan East District, Wuchang District, Wuhan City, Hubei Province, 430061 Patentee after: CCCC Road & Bridge Special Engineering Co.,Ltd. Address before: Room 2101-2104, 21 / F, unit a, block a, Hubei science and technology venture building, Xiaohongshan East District, Wuchang District, Wuhan City, Hubei Province, 430061 Patentee before: CCCC ROAD & BRIDGE SPECIAL ENGINEERING Co.,Ltd. |