CN111648258B - Ultrahigh single-column pier reinforcing and maintaining method - Google Patents

Ultrahigh single-column pier reinforcing and maintaining method Download PDF

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Publication number
CN111648258B
CN111648258B CN202010510254.3A CN202010510254A CN111648258B CN 111648258 B CN111648258 B CN 111648258B CN 202010510254 A CN202010510254 A CN 202010510254A CN 111648258 B CN111648258 B CN 111648258B
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plate
steel
installation
anchor plate
anchor
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CN111648258A (en
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茅卫生
叶林
陶戴邦
陈骏军
张明
金玉珠
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Shanghai Municipal Maintenance & Management Co ltd
Shanghai Urban Construction City Operation Group Co ltd
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Shanghai Urban Construction City Operation Group Co ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/02Piers; Abutments ; Protecting same against drifting ice

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  • Civil Engineering (AREA)
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  • Bridges Or Land Bridges (AREA)

Abstract

The invention relates to a method for reinforcing and maintaining an ultrahigh single-column pier, which comprises the following steps of firstly, arranging a hanging basket construction platform by utilizing the space of a beam bottom, not occupying an expressway road, reducing the influence of construction on expressway traffic, and completing the installation and the removal of a construction operation platform through the procedures of hoisting point installation, lifting lug installation, hanging basket installation and lifting, hanging basket locking and the like; by adopting the measure of adjusting the embedded bar angle, the problems that the arrangement of steel bars on the cross beam and the bent cap is dense and the positioning difficulty of anchor bolt construction is high in dry drilling construction are effectively solved, and the problem that the oblique pier steel plate anchor bolt cannot be installed is also solved; in the installation process of the anti-overturning anchor bolt system, the collision between the installation of the anchor plate and rib plates of the upper anchor plate and the lower anchor plate and between the anchor plate and the steel box girder can be avoided in time by adjusting the construction sequence of part of steel structure processing; by adjusting the installation sequence of the upper anchor plate and the lower anchor plate, the common problems that the bolt holes of the special-shaped bridge pier are difficult to install, the displacement of the original bridge is limited and the like are solved; through the installation antidumping monitoring device, realize mastering in real time operation stage beam bridge structural stability.

Description

Ultrahigh single-column pier reinforcing and maintaining method
Technical Field
The invention relates to a method for maintaining a single-column pier, in particular to a method for maintaining an ultrahigh single-column pier.
Background
The overpass is located at the junction of one expressway and the other expressway, the overpasses are rechecked to form a 7 th joint and an 8 th joint of ES ramps of the overpasses into a simply supported steel-aliasing beam, the anti-overturning stability coefficient is less than 2.5 and only 1.14 and 1.24, the support counterforce and the transverse stability coefficient do not meet the requirements, and anti-overturning anchor bolt systems and anti-overturning monitoring systems are required to be installed between 3 pier bodies and beam bodies respectively.
According to a conventional construction process, firstly, a support is erected or a climbing vehicle is used for construction to serve as a construction platform, the on-site pier stud is measured, the size is determined, then the pier stud is returned to the field for processing, and the pier stud is transported to the site for installation after the processing is finished; or the processing is finished in the field according to the original drawing, and the adjustment is carried out according to the situation after the processing is finished in the field.
The most conventional method is to set up a construction platform, measure on site, customize and process, and finally transport the steel structure to the site for installation. The method has long operation time, and does not conform to the concept of shortening the construction period and reducing the influence on traffic as much as possible. For the high pier column, the method requires the on-site measurement and the on-site processing precision to be particularly accurate, the time for occupying the highway is too long, the problem of installation precision is difficult to completely solve, and when the installation cannot be carried out under special conditions on the site, the high pier column needs to be transported back to the factory for secondary processing.
The other method is that the original drawing is processed in the field and then is transported to the field for processing and installation, the method can save part of time, but the method is difficult to ensure that the size of the original structure is completely consistent with the drawing, the reinforcement project is easy to conflict with the original structure, the problem of installation precision is difficult to completely solve, and when the reinforcement project cannot be installed under special conditions in the field, steel plate reaming, steel plate cutting, welding and the like are usually adopted, and even the reinforcement project needs to be processed in the field.
Therefore, the two treatment methods have disadvantages, and the problems that the field installation precision cannot be thoroughly solved and the requirements of rapid construction and rapid traffic opening cannot be met are solved.
Disclosure of Invention
The method for reinforcing and maintaining the ultrahigh single-column pier aims to solve the problems of low installation progress and low installation precision in the prior art and solve the problems of high implementation cost, long channel sealing operation time and the like. The method is suitable for the anti-overturning reinforcement construction of the single-column pier with large traffic flow, high reinforced pier column height and multiple process flows.
In order to achieve the purpose, the technical scheme of the invention is as follows: a method for reinforcing and maintaining an ultrahigh single-column pier comprises the following specific steps:
step one, hanging basket installation and lowering
(1) Positioning a hoisting point: determining the height and the position of a hanging basket, and meeting the requirements of drilling on the side surface of a pier stud, planting bars and installing an anchor bolt system and welding the anchor bolt system and a steel box girder;
(2) mounting a lifting lug: 2 hanging basket lifting lugs are welded at a steel beam web plate and are arranged at a concrete beam web plate; drilling holes at a concrete beam web plate and planting ribs, and fixing a steel plate on a concrete beam body;
(3) lifting the hanging basket: after the hanging baskets are installed in place, connecting the two hanging baskets into a whole by using a steel wire rope, adjusting the distance between the hanging baskets according to the construction requirement, supporting a beam body by using a steel connecting pipe in order to prevent the hanging baskets from swinging forwards and backwards, and connecting the steel pipe and the hanging baskets by using a fastener;
(4) and (3) installing an anti-overturning anchor bolt system: according to a design drawing, measuring and lofting on a beam body and a pier stud, drilling holes and planting ribs, and then carrying out anchor plate installation, lug plate installation, pulling plate installation and anticorrosive coating;
(5) lowering and dismantling the hanging basket: after the anti-overturning device and the monitoring device are installed, the hanging points of the hanging basket are reserved, the hanging basket is removed after being placed on the ground, and the steel wire rope is removed from the bridge floor by using a bridge inspection vehicle;
step two, steel structure processing and beam body drilling bar planting
(1) Processing an anchor plate: the sizes of an upper anchor plate and a lower anchor plate which are welded and bolted on the beam body and do not conflict with the beam body during installation are prefabricated, and the positions and angles of the bolt holes on the anchor plates are slightly adjusted according to the anchor holes of the beam body;
(2) beam drilling and steel plate drilling: the original drilling position is guaranteed, when the drilling position meets the steel bars and the angle of the steel bars is adjusted, the positions of individual bar planting holes are adjusted when the steel bars cannot be avoided, and if the whole row of bar planting holes cannot be avoided, the upper and lower positions of the anchor plate are adjusted;
(3) rib plate welding: the position of the rib plate is adjusted according to the field condition, so that the situation that the pull plate cannot be installed due to collision with the pull plate is avoided;
(4) and (3) processing a pulling plate: the angle and the length of the pulling plate are changed, and the length and the angle of the pulling plate are processed according to the field size;
step three, anchor plate installation
(1) Orthogonal beam: firstly installing an upper anchor plate, then determining whether the installation of the pulling plate conflicts with the rib plate and the original steel box girder according to the field condition, if so, moving the lower anchor plate downwards, adjusting the angle and the length of the pulling plate,
installing a lower anchor plate;
(2) oblique crossing beam: aiming at the fact that the oblique crossing beam pier stud is of a special-shaped section, the angle of the lower anchor plate is fixed, an included angle exists between the pulling plate and the lower anchor plate, the lower anchor plate is installed firstly, the welding position and the angle of the upper anchor plate are adjusted according to the field condition, the pulling plate and the upper anchor plate and the lower anchor plate are guaranteed to be in the same plane position, and the beam body is guaranteed not to generate additional internal force under the action of shrinkage expansion deformation caused by temperature;
(3) and (3) mounting a pull rod: the round holes of the pull rod are simultaneously bolted with the round holes of the upper anchor plate and the lower anchor plate, and the installation error of the distance between the centers of the upper round hole and the lower round hole of the pull rod is controlled within +5 mm;
step four, installing the monitoring device
The stress condition and the stability monitoring of the single-column pier are completely monitored, and the emergency situation can be avoided in advance.
In the first step, when the steel bar planting is carried out in the drilling process, the angle of the steel bar needs to be adjusted, when the steel bar position which can not be detected by the steel bar detector is met, the position of an original steel bar planting hole is reserved, the anchor bolt hole position and the anchor plate hole position are prevented from being frequently changed, the steel structure anchor plate can be machined in advance, the engineering quantity is reduced, and the construction period is shortened.
In the second step, the processing sequence of a part of steel structures is as follows: the method comprises the steps of integrally processing a lower anchor plate and a lower lug plate in a factory, independently processing an upper lug plate, after a component is installed, processing a pull plate in the factory and assembling on site, and finally processing an upper neck plate and a lower neck plate and welding on site, so that the pull plate and the upper neck plate and the lower neck plate are prevented from colliding in the installation process.
In the third step, the steel structure is installed in sequence: the method comprises the steps of firstly determining the installation position of an oblique lower anchor plate, then determining the installation position of an upper anchor plate according to the length of a design pulling plate, checking whether an upper lug plate and a lower lug plate are on the same plane, if so, determining the actual installation length of the pulling plate, otherwise, finely adjusting the installation position of the lower anchor plate, and then re-determining the installation positions of various steel structures until the upper lug plate and the lower lug plate are on the same plane, thereby avoiding the problems that the bolt and a bolt hole azimuth are inconsistent and the pulling plate is bent, twisted and deformed and is difficult to install.
Due to the adoption of the technology, the invention has the following beneficial effects:
1. the load of the bridge inspection vehicle or the climbing vehicle can not meet the load requirements of constructors and steel structures. The cost of setting up the support is high, the time is long, afforestation migration is many, and is long to high-speed access influence time, and the safety risk is high.
2. The hanging basket construction platform is high in platform utilization rate, and both sides of the pier stud can be synchronously constructed, so that the construction period is shortened.
3. Only the hanging basket occupies the road when being installed and dismantled, and the traffic is opened in other operation time. Is beneficial to the normal traffic of the expressway and creates the hidden social benefit.
4. The construction process flow is adjusted, the in-plant processing and the on-site measurement are carried out synchronously, the mounting precision can be ensured, the project period is shortened, the construction cost is greatly reduced, and the economy is better.
Drawings
FIG. 1 is a schematic view of a basket construction platform;
wherein: (a) the hanging basket is in the bridge direction, and (b) the hanging basket is in the transverse bridge direction;
FIG. 2 is a schematic view of the adjustment of the bar planting angle;
wherein: (a) is a side view of the lower anchor plate, and (b) is a front view of the lower anchor plate;
FIG. 3 is a schematic perspective view of a skew beam bridge bolt and bolt hole azimuth angle difficult to maintain consistent;
FIG. 4 is a schematic diagram of the collision between the installation of the anchor plate of the orthogonal beam and the rib plates of the upper anchor plate and the lower anchor plate.
Detailed Description
The invention is further described with reference to the following figures and examples.
Aiming at an engineering example of S32G 60-span single column piers, the ultrahigh single column pier reinforcing method adopts a hanging basket construction platform shown in (a) and (b) of fig. 1, and carries out construction according to construction drawings of (a) and (b) to 4 of fig. 2, and comprises the following specific steps:
firstly, hanging basket installation and lowering
(1) Hoisting point positioning
The height and the position of the hanging basket 1 are determined, so that the installation of the drilling, the bar planting 4 and the anchor bolt system on the side surface of the pier stud 2 can be met, and the welding between the anchor bolt system and the steel box girder 3 can be met.
(2) Shackle mounting
Welding two hanging basket lifting lugs 5 at the web of the steel box girder 3, polishing the paint on the surface of the steel box girder 3 before welding, enabling welding seams to be full, ensuring the welding length of each welding seam to bear the load requirement of 800kg, and arranging the welding seams at the web of the concrete girder; and (3) drilling holes at the concrete beam web plate to implant the steel bars 4, fixing the steel plates on the concrete beam body in a fixing mode, wherein the bolt holes are 18mm, and the diameter of the implanted steel bars is phi 16 mm.
(3) Lifting of hanging basket
Before the hanging basket 1 is lifted, a load test is carried out on the hanging basket 1, and the load of the project is limited to 400 kg. And after the detection is qualified, carrying out lifting operation. After the hanging baskets 1 are installed in place, the two hanging baskets 1 are connected into a whole by using the steel wire rope, the distance between the hanging baskets is adjusted according to the construction requirement, in order to prevent the hanging baskets 1 from swinging back and forth, phi 48 multiplied by 3.0 is used, Q235 is connected with a steel pipe to support a steel beam body, and the steel pipe is connected with the hanging baskets 1 by using fasteners.
(4) Anti-overturning anchor bolt system and monitoring system installation
According to a design drawing, the steel beam body and the pier stud are measured and lofted, the hole is drilled firstly, the steel bar 4 is planted, and then the anchor plate 6 is installed, the lower lug plate 7 is installed, the pulling plate 9 is installed, and the anti-corrosion coating is carried out.
(5) Lowering and dismantling hanging basket
After the anti-overturning device and the monitoring device are installed, the hanging points of the hanging basket are reserved (for standby), the hanging basket is removed after being placed on the ground, and the steel wire rope is removed from the bridge floor by using a bridge inspection vehicle.
Secondly, steel structure processing and beam drilling bar planting
(1) Anchor plate processing
The sizes of the upper anchor plate and the lower anchor plate which are welded and bolted with the beam body do not conflict with the beam body during installation, and the anchor plates can be prefabricated. The bolt hole on the anchor plate is slightly adjusted in position and angle according to the anchor hole of the beam body.
(2) Beam drilling and steel plate drilling
Guarantee original drilling position as far as possible, drilling department meets the reinforcing bar, and adjustment reinforcing bar angle is still when unable avoiding the reinforcing bar, and adjustment individuality bar planting hole position if whole row bar planting hole is unable to be avoided, then position about the adjustment anchor slab, the angle and the length of the crab-bolt device of this moment will change.
(3) Rib plate welding
Because the angle and the length of crab-bolt position change, the floor position needs to make the adjustment according to the site conditions, otherwise appear very easily with the place of arm-tie conflict, the arm-tie can't be installed.
(4) Processing of pulling plates
The angle and the length of the pulling plate are changed, the length and the angle of the pulling plate are processed according to the field size, particularly the bolt hole of the pulling plate, the designed moving space is only 5mm, and the processing precision is very high.
Thirdly, mounting anchor plate
(1) Orthogonal beam
Firstly installing an upper anchor plate, then determining whether the installation of the pulling plate conflicts with the rib plate and the original steel box girder according to the field condition, if so, moving the lower anchor plate downwards, adjusting the angle and the length of the pulling plate, and then installing the lower anchor plate.
(2) Skew beam
The oblique crossing beam pier stud is a special-shaped section, and the angle of the lower anchor plate is fixed and cannot be adjusted. Due to the three-dimensional angle, the pulling plate and the lower anchor plate form an included angle and cannot be completely horizontal on a plane. Therefore, the lower anchor plate is installed firstly, the welding position and the angle of the upper anchor plate are adjusted according to the field condition, the pull plate and the upper anchor plate and the lower anchor plate are ensured to be in the same plane position as much as possible, and the beam body is ensured not to generate additional internal force under the action of shrinkage expansion deformation caused by temperature.
(3) Pull rod installation
Because the round holes of the pull rod are bolted with the round holes of the upper anchor plate and the lower anchor plate at the same time, the installation error of the distance between the hole centers of the upper round hole and the lower round hole of the pull rod must be controlled within +5mm, and the spatial positions of the upper anchor plate and the lower anchor plate are slightly adjusted, so that the pull plate cannot be installed.
Fourthly, installation of monitoring device
The discovery and control capability of the commonly adopted beam bridge manual inspection mode to the risks is insufficient, and the method is one of bottlenecks of urban bridge management. Compared with large bridges, the medium-and-small-span urban bridges have the characteristics of large quantity, wide range, unified structure and similar diseases, and the economic, practical and targeted monitoring and early warning system is established, so that the method is an effective measure for promoting the daily management of the medium-and-small-span urban bridges to develop into a smart traffic management system.
Aiming at the problem of the bridge structure overturning stability, the reasonable monitoring strategy is constructed by utilizing the current advanced node type sensing equipment, combining a wireless data acquisition and transmission mode and based on an overturning mechanism, so that the real-time mastering of the bridge structure stability in the operation stage, the early warning prompt of the potential failure risk and the quick feedback of an extreme event can be realized, the scientificity of the structure overturning safety management is improved, and the operation safety of the bridge structure is practically ensured.
The invention fully utilizes the space at the bottom of the beam to arrange the hanging basket construction platform, does not occupy the highway ground road, reduces the influence of construction on highway traffic, and completes the installation and the removal of the construction operation platform through the procedures of hanging point installation, lifting lug installation, hanging basket installation and lifting, hanging basket locking and the like, as shown in (a) and (b) of figure 1.
In this embodiment, the bar planting angle adjustment part: the reinforcing steel bar position that the reinforcing steel bar detector can not detect meets intensive reinforcing steel bar in the drilling process, can remain original bar planting hole position, avoids frequently changing anchor bolt hole position and anchor plate hole site, guarantees that the steel construction anchor plate can process in advance, reduces the engineering volume, shortens construction period. See (a) and (b) of the figure.
In this embodiment, the steel structure installation order: firstly, determining the mounting position of the oblique lower anchor plate, then determining the mounting position of the upper anchor plate according to the length of the designed pulling plate, checking whether the upper lug plate 8 and the lower lug plate 7 are on the same plane, if so, determining the actual mounting length of the pulling plate 9, otherwise, finely adjusting the mounting position of the lower anchor plate, and then determining the mounting positions of the steel structures again until the upper lug plate 8 and the lower lug plate 7 are on the same plane, thereby avoiding the common mounting problems that the azimuth of the bolt 10 is inconsistent with the azimuth of the bolt hole 11, the pulling plate 9 is bent and twisted and deformed and the like. As shown in fig. 3.
In this embodiment: processing sequence of a part of steel structures: adjusting a drawing steel structure processing scheme, integrally processing a lower anchor plate and a lower lug plate 7 in a factory, independently processing an upper lug plate 8, after the installation of a component is completed, processing a pulling plate 9 in the factory and assembling on site, and finally processing an upper neck plate and a lower neck plate and welding on site, thereby effectively avoiding the occurrence of collision A between the pulling plate 9 and the pulling plate, collision A between a steel box girder and the pulling plate, collision area B between the neck plate and a connecting plate, and collision C between the neck plate and the connecting plate in the installation process. As shown in fig. 4.
In this embodiment: the monitoring device is installed, can monitor the atress condition and the stability control of single-column mound completely, can avoid emergency's emergence in advance.

Claims (4)

1. The method for reinforcing and maintaining the ultrahigh single-column pier is characterized by comprising the following specific steps of:
step one, hanging basket installation and lowering
(1) Positioning a hoisting point: determining the height and the position of a hanging basket, and meeting the requirements of drilling on the side surface of a pier stud, planting bars and installing an anchor bolt system and welding the anchor bolt system and a steel box girder;
(2) mounting a lifting lug: for the steel beam, 2 hanging basket lifting lugs are welded at the position of a web plate of the steel beam; for the concrete beam, drilling holes at a beam web plate of the concrete beam, and planting bars, and fixing the lifting lug steel plate on the concrete beam body;
(3) lifting the hanging basket: after the hanging baskets are installed in place, connecting the two hanging baskets into a whole by using a steel wire rope, adjusting the distance between the hanging baskets according to the construction requirement, supporting a beam body by using a steel pipe in order to prevent the hanging baskets from swinging forwards and backwards, and connecting the steel pipe and the hanging baskets by using fasteners;
(4) the anti-overturning device and the monitoring device are installed, the monitoring device completely monitors the stress condition and the stability of the single-column pier, and the emergency situation can be avoided in advance;
(5) lowering and dismantling the hanging basket: after the anti-overturning device and the monitoring device are installed, the hanging points of the hanging basket are reserved, the hanging basket is removed after being placed on the ground, and the steel wire rope is removed from the bridge floor by using a bridge inspection vehicle;
step two, steel structure processing and beam body drilling bar planting
(1) Processing an anchor plate: the sizes of an upper anchor plate and a lower anchor plate which are welded and bolted on the beam body and do not conflict with the beam body during installation are prefabricated, and the positions and angles of the bolt holes on the anchor plates are slightly adjusted according to the anchor holes of the beam body;
(2) beam drilling and steel plate drilling: the original drilling position is guaranteed, when the drilling position meets the steel bars and the angle of the steel bars is adjusted, the positions of individual bar planting holes are adjusted when the steel bars cannot be avoided, and if the whole row of bar planting holes cannot be avoided, the upper and lower positions of the anchor plate are adjusted;
(3) rib plate welding: the position of the rib plate is adjusted according to the field condition, so that the situation that the pull plate cannot be installed due to collision with the pull plate is avoided;
(4) and (3) processing a pulling plate: the angle and the length of the pulling plate are changed, and the length and the angle of the pulling plate are processed according to the field size.
Step three, anchor plate installation
(1) Orthogonal beam: firstly, installing an upper anchor plate, then determining whether the installation of a pulling plate conflicts with a rib plate and an original steel box girder according to the field condition, if so, moving the lower anchor plate downwards, adjusting the angle and the length of the pulling plate, and then installing the lower anchor plate;
(2) oblique crossing beam: aiming at the fact that the oblique crossing beam pier stud is of a special-shaped section, the angle of the lower anchor plate is fixed, an included angle exists between the pulling plate and the lower anchor plate, the lower anchor plate is installed firstly, the welding position and the angle of the upper anchor plate are adjusted according to the field condition, the pulling plate and the upper anchor plate and the lower anchor plate are guaranteed to be in the same plane position, and the beam body is guaranteed not to generate additional internal force under the action of shrinkage expansion deformation caused by temperature;
(3) and (3) mounting a pull rod: the round hole of the pull rod is bolted with the round holes of the upper anchor plate and the lower anchor plate simultaneously, and the installation error of the distance between the hole centers of the upper round hole and the lower round hole of the pull rod is controlled within +5 mm.
2. The ultra-high single-column pier reinforcement and maintenance method according to claim 1, wherein: in the first step, when the steel bar planting is carried out in the drilling process, the angle of the steel bar needs to be adjusted, when the steel bar position which can not be detected by the steel bar detector is met, the position of an original steel bar planting hole is reserved, the anchor bolt hole position and the anchor plate hole position are prevented from being frequently changed, the steel structure anchor plate can be machined in advance, the engineering quantity is reduced, and the construction period is shortened.
3. The ultra-high single-column pier reinforcement and maintenance method according to claim 1, wherein: in the second step, the processing sequence of a part of steel structures is as follows: the method comprises the steps of integrally processing a lower anchor plate and a lower lug plate in a factory, independently processing an upper lug plate, after a component is installed, processing a pull plate in the factory and assembling on site, and finally processing an upper neck plate and a lower neck plate and welding on site, so that the pull plate and the upper neck plate and the lower neck plate are prevented from colliding in the installation process.
4. The ultra-high single-column pier reinforcement and maintenance method according to claim 1, wherein: in the third step, the steel structure is installed in sequence: the method comprises the steps of firstly determining the installation position of an oblique lower anchor plate, then determining the installation position of an upper anchor plate according to the length of a design pulling plate, checking whether an upper lug plate and a lower lug plate are on the same plane, if so, determining the actual installation length of the pulling plate, otherwise, finely adjusting the installation position of the lower anchor plate, and then re-determining the installation positions of various steel structures until the upper lug plate and the lower lug plate are on the same plane, thereby avoiding the problems that the bolt and a bolt hole azimuth are inconsistent and the pulling plate is bent, twisted and deformed and is difficult to install.
CN202010510254.3A 2020-06-08 2020-06-08 Ultrahigh single-column pier reinforcing and maintaining method Active CN111648258B (en)

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Publication number Priority date Publication date Assignee Title
CN115058988A (en) * 2022-08-03 2022-09-16 悉地(苏州)勘察设计顾问有限公司 Transformation method of overhead single-column pier bridge

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Publication number Priority date Publication date Assignee Title
JPH02279807A (en) * 1989-04-20 1990-11-15 Kayaba Ind Co Ltd Operation car for bridge girder
CN202347447U (en) * 2011-09-20 2012-07-25 无锡市傲世机械制造有限公司 Reinforced hanging basket
CN205474878U (en) * 2016-01-26 2016-08-17 上海市基础工程集团有限公司 Outer hanging platform system of manpower
CN108532474A (en) * 2018-03-29 2018-09-14 中冶华天工程技术有限公司 A kind of the overturn-preventing bracing means and installation method of Single column pier bridge
CN109457629A (en) * 2018-12-07 2019-03-12 杭州江润科技有限公司 Single column pier ruggedized construction and construction method
CN110863441A (en) * 2019-12-03 2020-03-06 长安大学 Single-column pier bridge reinforcing device for preventing overturning and falling of beam and installation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02279807A (en) * 1989-04-20 1990-11-15 Kayaba Ind Co Ltd Operation car for bridge girder
CN202347447U (en) * 2011-09-20 2012-07-25 无锡市傲世机械制造有限公司 Reinforced hanging basket
CN205474878U (en) * 2016-01-26 2016-08-17 上海市基础工程集团有限公司 Outer hanging platform system of manpower
CN108532474A (en) * 2018-03-29 2018-09-14 中冶华天工程技术有限公司 A kind of the overturn-preventing bracing means and installation method of Single column pier bridge
CN109457629A (en) * 2018-12-07 2019-03-12 杭州江润科技有限公司 Single column pier ruggedized construction and construction method
CN110863441A (en) * 2019-12-03 2020-03-06 长安大学 Single-column pier bridge reinforcing device for preventing overturning and falling of beam and installation method thereof

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