CN111305039B - Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof - Google Patents
Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof Download PDFInfo
- Publication number
- CN111305039B CN111305039B CN202010069589.6A CN202010069589A CN111305039B CN 111305039 B CN111305039 B CN 111305039B CN 202010069589 A CN202010069589 A CN 202010069589A CN 111305039 B CN111305039 B CN 111305039B
- Authority
- CN
- China
- Prior art keywords
- steel
- cover plate
- stress distribution
- stayed bridge
- improving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a device for improving stress distribution of a swivel cable-stayed bridge and an installation method thereof. The steel truss can effectively improve the transverse connection of the bridge tower, improve the negative bending moment bearing capacity at the bridge tower and improve the stability of swivel construction; the force application mechanism provides an automatically adjustable elastic support for the main beam so as to improve the stress distribution of the fixing area of the tower pier beam and reduce the stress concentration; meanwhile, the force application mechanism can also adjust the unbalanced moment difference generated by the bridge rotating body in the tower pier beam consolidation area. The invention combines the steel truss and the force application mechanism, can effectively improve the stress condition of the main beam fixing area of the swivel cable-stayed bridge, and effectively ensures the stability and the safety of the swivel cable-stayed bridge during the construction and the operation.
Description
Technical Field
The invention belongs to the field of bridge construction technology control, particularly relates to a force application mechanism of a bridge structure, and particularly relates to a device for improving stress distribution of a swivel cable-stayed bridge and an installation method thereof.
Background
The cable-stayed bridge swivel construction method enriches the construction process of the cable-stayed bridge and overcomes the influence of obstacles on the bridge construction to a certain extent. In order to improve the bending rigidity and the integrity of the cable-stayed bridge, enhance the stability of swivel construction and reduce the midspan deflection of a main beam and the longitudinal displacement of the bridge, the swivel cable-stayed bridge mostly adopts a rigid frame system consolidated by a tower pier beam. The working condition of the pier beam consolidation part directly influences the overall rigidity and stability of the cable-stayed bridge, if stress concentration or damage occurs, the construction safety of the cable-stayed bridge is influenced, and the overall failure of the cable-stayed bridge can be caused in serious conditions, so that disastrous results are generated. Under the action of constant load, live load and temperature, the stress on the consolidation part of the tower pier beam of the cable-stayed bridge is complex; moreover, the fixed shaft rotation is carried out in the turning stage, and the stress distribution at the consolidation part of the tower pier beam in the turning process can be obviously changed. Therefore, it is necessary to improve the stress distribution at the pier beam consolidation of the swivel cable-stayed bridge.
The hogging moment of the consolidation part of the steel frame system tower pier beam is large, and the stress distribution is extremely complex. At present, relatively few researches are made on stress distribution at a pier beam consolidation part of a rotator cable-stayed bridge and a process method for improving the stress distribution. The existing reinforcement process mainly focuses on the aspects of increasing the size design of a cross section, improving the shape of a key detailed structure, increasing the reinforcement design of the cross section, arranging a prestressed steel beam and the like, but the processes belong to passive reinforcement improvement processes in the structure, and the implementation process is time-consuming, labor-consuming and inconvenient. How to provide a relatively simple and convenient external mechanism to actively improve the stress distribution at the pier-girder consolidation part of the swivel cable-stayed bridge, thereby improving the stability of the cable-stayed bridge during swivel construction has become a problem to be solved in the field.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the force application mechanism is simple in structure and capable of improving stress distribution of a pier beam consolidation area of the swivel cable-stayed bridge tower and the mounting method of the force application mechanism.
The technical scheme adopted by the invention is as follows: the utility model provides an improve device of turning cable-stay bridge stress distribution, includes the steel truss, the both sides of steel truss are equipped with the bar planting stock that is used for being connected with the lower bridge tower of cable-stay bridge, the last steel sheet that is fixed with of steel truss, this steel sheet upper surface are equipped with application of force mechanism to provide the changeable jacking force of size for the girder.
In the scheme, the steel truss can effectively improve the transverse connection of the bridge tower and reduce the stress of the main beam consolidation area; the force application mechanism can provide different jacking forces for the main beam according to the construction state, so that the combination of the steel truss and the force application mechanism can effectively solve the problem of unbalanced stress distribution of the pier beam consolidation area of the cable-stayed bridge and play a role in buffering instability which may occur in the construction process of the rotor.
Preferably, the force application mechanism comprises an upper steel cover plate, an upright rod, a spring and a lower steel cover plate, wherein the upper steel cover plate, the spring and the lower steel cover plate are sequentially sleeved on the upright rod from top to bottom; the upper steel cover plate is positioned at the top end of the upright stanchion and is used for being connected with the main beam; the lower steel cover plate can move along the axis of the vertical rod to compress the spring, and the upper steel cover plate and the lower steel cover plate can limit the position of the spring on the vertical rod; the bottom end of the vertical rod is fixed on the steel plate.
In the scheme, the upper steel cover plate can move relative to the vertical rod within a certain limit (the maximum range is the thickness of the upper steel cover plate) according to the construction condition, so that the compression amount of the spring is changed, and the stress distribution condition of the main beam is adjusted.
Preferably, the lower section of the vertical rod is provided with threads and is provided with a second nut positioned on the lower surface of the lower steel cover plate, and the second nut is used for limiting the position of the lower steel cover plate on the vertical rod.
After the spring is adjusted to a preset state, the position of the lower steel cover plate on the vertical rod is limited through the second nut, and the compression state of the spring is ensured.
Preferably, a jack is arranged on the steel plate, and the top end of the jack is abutted to the lower steel cover plate; the lifting jack is used for lifting the lower steel cover plate, so that the spring is compressed to a preset state and the position of the lower steel cover plate on the vertical rod is limited.
Preferably, the lower surface of the lower steel cover plate is provided with a groove for placing the top end of a jack; thereby providing a point of effort for the jack.
Preferably, the radial length of the groove is matched with the radial length of the top end of the jack, and the depth of the groove is half of the thickness of the lower steel cover plate.
Preferably, the force application mechanism further comprises a steel plate pedestal fixed on the steel plate, and the bottom ends of the vertical rods and the bottom ends of the jacks are mounted on the steel plate pedestal; the steel plate pedestal is also provided with anti-torsion steel pipes on two sides of the vertical rod, and the top ends of the anti-torsion steel pipes penetrate through the lower steel cover plate, so that the lower steel cover plate is prevented from rotating around the vertical rod.
Preferably, the upper steel cover plate is provided with a through hole, the diameter of the upper half part of the through hole is larger than that of the lower half part of the through hole, the top end of the upright rod is provided with a rod cap, the rod cap is placed on the upper half part of the through hole, and the depth of the upper half part of the through hole is larger than the thickness of the rod cap, so that the upper steel cover plate can move relative to the upright rod within a certain limit, and the upper steel cover plate can be prevented from being separated from the upright rod.
Preferably, the rod cap is a saw-toothed rod cap, and a saw-toothed groove matched with the saw-toothed rod cap is formed in the edge of the upper half part of the through hole; thereby preventing the top end of the upright stanchion and the upper steel cover plate from rotating.
The invention also provides an installation method of the device for improving the stress distribution of the swivel cable-stayed bridge, which comprises the following steps:
s1: constructing a lower bridge tower and a main beam according to the construction sequence, and cutting bar planting holes on the inner side of the lower bridge tower after the strength of the lower bridge tower and the main beam meets the requirement;
s2: hoisting a steel truss to a specified position, fixing the steel truss on the lower bridge tower by using the bar-planting anchor rods, bonding and sealing by using bar-planting glue, so that the lower bridge tower and the steel truss are integrated, removing hoisting equipment after the strength of a bar-planting area meets the requirement, and welding a steel plate on the steel truss;
s3: the bottom end of the force application mechanism is fixed on the upper surface of the steel plate (6), so that the top end of the force application mechanism (7) is in sufficient contact with the main beam (8) to provide a jacking force for the main beam.
The invention has the beneficial effects that: the steel truss can effectively improve the transverse connection of the lower bridge tower and reduce the stress of a main beam consolidation area; the stress distribution can be automatically adjusted by utilizing the self-compression and recovery performance of the spring in the force application mechanism; the force application mechanism and the steel truss act together, so that the problem of unbalanced stress distribution in the consolidation area of the tower pier beam can be effectively solved, and the possible instability in the rotor construction process can be buffered; the jack can be disassembled during the operation of the force application mechanism, and is convenient and economical.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a schematic view of a force applying mechanism in an embodiment of the present invention;
FIG. 3 is an exploded view of the upper portion of the force applying mechanism in an embodiment of the present invention;
FIG. 4 is a schematic view of an upper steel deck in an embodiment of the present invention;
FIG. 5 is a schematic view of a lower steel deck in an embodiment of the present invention;
FIG. 6 is a schematic view of the lower portion of the force applying mechanism in an embodiment of the present invention;
fig. 7 is a schematic view of a steel truss in an embodiment of the invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1 to 7, a device for improving stress distribution of a swivel cable-stayed bridge comprises an upper bearing platform 1, a main pier 2, a lower bridge tower 3, a first nut 4, a steel truss 5, a steel plate 6, a force application mechanism 7, a main beam 8 and a bar-planting anchor rod 9. The main bridge pier 2 is fixed on the upper bearing platform 1, the lower bridge tower 3 is positioned on the main bridge pier 2, and the main beam 8 is fixed above the lower bridge tower 3.
A bar planting hole is drilled on the inner side of the lower bridge tower 3, a steel truss 5 is arranged in the middle of the lower bridge tower 3, one end of a bar planting anchor rod 9 is inserted into the bar planting hole and bonded through bar planting glue, the other end of the bar planting anchor rod 9 is inserted into a through hole on the inner side of the steel truss 5 and fixedly connected with the steel truss 5 through a first nut 4, and therefore the lower bridge tower 3 and the steel truss 5 are fixedly connected together; a steel plate 6 is fixed on the steel truss 5, and the steel plate 6 and a main beam 8 are fixedly connected through a force application mechanism 7.
Specifically, the force application mechanism 7 comprises an upper steel cover plate 7-1, an upright rod 7-2, a spring 7-3, a lower steel cover plate 7-4, a second nut 7-5, an anti-torsion steel pipe 7-6, a steel plate pedestal 7-7 and a jack 7-8.
An upright rod 7-2 is fixed on the steel plate pedestal 7-7, the bottom end of the upright rod 7-2 is welded on the steel plate pedestal 7-7, an upper steel cover plate 7-1, a spring 7-3 and a lower steel cover plate 7-4 are sequentially sleeved on the upright rod 7-2 from top to bottom, and the upper steel cover plate 7-1 is positioned at the top end of the upright rod 7-2; the lower section of the vertical rod 7-2 is provided with threads and is provided with a second nut 7-5 positioned on the lower surface of the lower steel cover plate 7-4, and the second nut 7-5 is used for limiting the position of the lower steel cover plate 7-4 on the vertical rod 7-2; an anti-torsion steel pipe 7-6 is further fixed on the steel plate pedestal 7-7, the anti-torsion steel pipe 7-6 is located on two sides of the upright post 7-2, and the top end of the anti-torsion steel pipe penetrates through the lower steel cover plate 7-4; a jack 7-8 is arranged between the steel plate pedestal 7-7 and the lower steel cover plate 7-4 and used for jacking the spring 7-3 to ensure that the spring has a certain compression amount.
In the embodiment, the steel truss 5 is prefabricated and assembled in a factory and is hoisted to a specified position on a construction site; the spring 7-3 is made of silicon manganese spring steel.
In the embodiment, a through hole 7-1-2 is formed in the center of an upper steel cover plate 7-1 for a vertical rod 7-2 to penetrate through, a spring 7-3 is welded on the lower surface of the upper steel cover plate 7-1, and the upper steel cover plate 7-1 is fixedly connected with a main beam 8 through a first bolt 7-1-1.
In the embodiment, the upper end of the upright post 7-2 is provided with a serrated rod cap 7-2-1, the diameter of the upper half part of a through hole 7-1-2 formed in the upper steel cover plate 7-1 is larger than that of the lower half part, the diameter of the lower half part of the through hole 7-1-2 is matched with that of the upright post 7-2, and the edge of the upper half part of the through hole 7-1-2 is provided with a serrated groove matched with the serrated rod cap 7-2-1 and used for placing the serrated rod cap 7-2-1, so that the upright post 7-2 and the upper steel cover plate 7-1 are prevented from rotating relatively; further, the depth of the upper half of the through-hole 7-1-2 is larger than the thickness of the serrated bar cap 7-2-1.
It should be noted that, after the jack 7-8 lifts the lower steel cover plate 7-4 to a specified position to make the spring 7-3 have a certain amount of compression, the position of the lower steel cover plate 7-4 is limited by the second nut 7-5, and at this time, the jack 7-8 can be removed; the second nut 7-5 is not provided, the position of the lower steel cover plate 7-4 is limited only by the jack 7-8, or the second nut 7-5 and the jack 7-8 are used simultaneously.
In the embodiment, a through hole is formed in the center of the lower steel cover plate 7-4 for the vertical rod 7-2 to pass through, through holes are also formed in the two sides of the lower steel cover plate 7-4 for the two anti-torsion steel pipes 7-6 to pass through, a spring 7-3 is welded on the upper surface of the lower steel cover plate 7-4, and a groove 7-4-1 is formed in the lower surface of the lower steel cover plate 7-4 to provide an acting point for the jack 7-8.
In this embodiment, a hole is formed in the steel plate pedestal 7-7, and the second bolt 7-7-1 penetrates through the hole to be connected with the steel plate 6, so as to realize the fixed connection between the steel plate pedestal 7-7 and the steel plate.
The construction method of the present invention includes the following steps:
s1: constructing the lower bridge tower 3 and the girder section 8 according to the construction sequence, and cutting bar planting holes on the inner side of the lower bridge tower 3 after the strength of each component meets the requirement;
s2: hoisting the steel truss 5 to a specified position, fixing the steel truss 5 on the lower bridge tower 3 by using a bar-planting anchor rod 9, bonding and sealing by using bar-planting glue, so that the lower bridge tower 3 and the steel truss 5 form a whole, removing hoisting equipment after the strength of a bar-planting area meets the requirement, and welding a steel plate 6 on the steel truss 5;
s3: the bottom end of the force application mechanism 7 is fixed on the steel plate 6, so that the top end of the force application mechanism 7 is in sufficient contact with the main beam 8 to provide a jacking force for the main beam 8.
Specifically, a jack 7-8 is used for jacking a lower steel cover plate 7-4 until a spring 7-3 has a certain compression amount, so that the force application mechanism 7 has jacking force; and then the position of the lower steel cover plate 7-4 on the upright rod 7-2 is limited by the second nut 7-5 or/and the jack, so that the weight distribution of the spring 7-3 can be automatically adjusted according to the construction state, and the effects of improving the stress distribution condition of the construction stage and the fixing area of the tower pier and the beam after the bridge is formed and improving the safety factor of the bridge are achieved.
After the installation of the device is completed, the construction of the main tower and other beam sections of the main beam is performed, and then the swivel construction and the subsequent construction of the cable-stayed bridge are performed; after each construction to form a bridge, the device can still be retained and used as a stress relieving and disaster reducing device during operation.
Claims (9)
1. The device for improving the stress distribution of the swivel cable-stayed bridge is characterized by comprising a steel truss (5), wherein two sides of the steel truss (5) are provided with bar-planting anchor rods (9) used for being connected with a lower bridge tower (3) of the cable-stayed bridge, a steel plate (6) is fixed on the steel truss (5), and the upper surface of the steel plate (6) is provided with a force application mechanism (7) so as to provide a variable jacking force for a main beam (8); the force application mechanism (7) comprises an upper steel cover plate (7-1), an upright rod (7-2), a spring (7-3) and a lower steel cover plate (7-4), wherein the upper steel cover plate (7-1), the spring (7-3) and the lower steel cover plate (7-4) are sequentially sleeved on the upright rod (7-2) from top to bottom; the upper steel cover plate (7-1) is positioned at the top end of the upright stanchion (7-2) and is used for being connected with the main beam (8); the lower steel cover plate (7-4) can move along the axis of the vertical rod (7-2) to compress the spring (7-3), and the upper steel cover plate (7-1) and the lower steel cover plate (7-4) can limit the position of the spring (7-3) on the vertical rod (7-2); the bottom ends of the vertical rods (7-2) are fixed on the steel plate (6).
2. A device for improving the stress distribution of swivel cable-stayed bridges according to claim 1, characterized in that the lower sections of the vertical rods (7-2) are threaded and are provided with second nuts (7-5) on the lower surface of the lower steel deck (7-4), the second nuts (7-5) being used to define the position of the lower steel deck on the vertical rods (7-2).
3. A device for improving the stress distribution of a swivel cable-stayed bridge according to claim 1 or 2, characterized in that the steel plate (6) is provided with a jack (7-8), and the top end of the jack (7-8) is abutted with the lower steel cover plate (7-4).
4. A device for improving the stress distribution of a swivel cable-stayed bridge according to claim 3, characterized in that the lower surface of the lower steel cover plate (7-4) is provided with a groove (7-4-1) for placing the top end of the jack (7-8).
5. The device for improving the stress distribution of the swivel cable-stayed bridge according to claim 4, characterized in that the diameter length of the groove (7-4-1) is matched with the diameter length of the top end of the jack (7-8), and the depth of the groove (7-4-1) is half of the thickness of the lower steel cover plate (7-4).
6. The device for improving the stress distribution of the swivel cable-stayed bridge according to claim 3, wherein the force application mechanism (7) further comprises a steel plate pedestal (7-7) fixed on the steel plate (6), and the bottom ends of the upright rods (7-2) and the bottom ends of the jacks (7-8) are both installed on the steel plate pedestal (7-7); and torsion resistant steel pipes (7-6) are also arranged on the two sides of the vertical rods (7-2) on the steel plate pedestals (7-7), and the top ends of the torsion resistant steel pipes (7-6) penetrate through the lower steel cover plate (7-4).
7. The device for improving the stress distribution of the swivel cable-stayed bridge according to claim 1, characterized in that the upper steel cover plate (7-1) is provided with a through hole (7-1-2), the diameter of the upper half part of the through hole (7-1-2) is larger than that of the lower half part, the top end of the upright (7-2) is provided with a rod cap (7-2-1), the rod cap (7-2-1) is placed at the upper half part of the through hole, and the depth of the upper half part of the through hole is larger than the thickness of the rod cap (7-2-1).
8. The device for improving the stress distribution of a swivel cable-stayed bridge according to claim 7, characterized in that the rod cap (7-2-1) is a saw-toothed rod cap, and the edge of the upper half of the through hole (7-1-2) is provided with a saw-toothed groove matched with the saw-toothed rod cap (7-2-1).
9. The installation method of the device for improving the stress distribution of the swivel cable-stayed bridge according to any one of claims 1 to 8, characterized by comprising the following steps:
s1: constructing the lower bridge tower (3) and the main beam (8) according to the construction sequence, and cutting bar planting holes on the inner side of the lower bridge tower (3) after the strength of the lower bridge tower (3) and the main beam (8) meets the requirement;
s2: hoisting a steel truss (5) to a specified position, fixing the steel truss (5) on the lower bridge tower (3) by using the bar-planting anchor rods (9), bonding and sealing by using bar-planting glue, so that the lower bridge tower (3) and the steel truss (5) form a whole, removing hoisting equipment after the strength of a bar-planting area meets the requirement, and welding a steel plate (6) on the steel truss (5);
s3: and fixing the bottom end of the force application mechanism (7) to the upper surface of the steel plate (6) to ensure that the top end of the force application mechanism (7) is in sufficient contact with the main beam (8) to provide jacking force for the main beam (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069589.6A CN111305039B (en) | 2020-01-22 | 2020-01-22 | Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069589.6A CN111305039B (en) | 2020-01-22 | 2020-01-22 | Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111305039A CN111305039A (en) | 2020-06-19 |
| CN111305039B true CN111305039B (en) | 2021-06-01 |
Family
ID=71156434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010069589.6A Active CN111305039B (en) | 2020-01-22 | 2020-01-22 | Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111305039B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922058B (en) * | 2022-07-04 | 2024-01-12 | 长沙理工大学 | Hydraulic support capable of being secondarily and accurately heightened |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070104048A (en) * | 2006-04-21 | 2007-10-25 | 홍광용 | Bridge upper plate turning method |
| CN204401436U (en) * | 2014-12-30 | 2015-06-17 | 广东省公路勘察规划设计院股份有限公司 | A kind of solely tower single cable plane wide cut steel concrete hybrid beam cable stayed bridge |
| CN205839575U (en) * | 2016-06-20 | 2016-12-28 | 中铁六局集团天津铁路建设有限公司 | A kind of swivel bridges supporting apparatus |
| CN106677070A (en) * | 2016-12-31 | 2017-05-17 | 中铁局集团有限公司 | Construction support and method for overhead large-span heavy-duty cross beam |
| CN106702909A (en) * | 2017-01-26 | 2017-05-24 | 中建三局集团有限公司 | Integral swiveling structure for double-body steel box girder and construction method thereof |
| CN107447682A (en) * | 2017-09-20 | 2017-12-08 | 华北水利水电大学 | A kind of bridge rotation construction structure and implementation |
| CN207159819U (en) * | 2017-06-15 | 2018-03-30 | 中铁十六局集团第三工程有限公司 | A kind of Sarasota crossbeam installs supporting construction |
| CN107916624A (en) * | 2017-11-24 | 2018-04-17 | 武汉海润工程设备有限公司 | A kind of unequal asymmetric swivel equipment of swivel center both ends swivel weight |
| CN207582319U (en) * | 2017-11-30 | 2018-07-06 | 江门市政企业集团有限公司 | A kind of pre-stressed bridge deflection adjusting device based on municipal bridge field |
| CN108487079A (en) * | 2018-04-12 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of the pier bottom rotation swivel construction method and system of double thin-wall piers |
| CN207904783U (en) * | 2018-02-06 | 2018-09-25 | 中铁二院昆明勘察设计研究院有限责任公司 | Rotary body device in the middle part of the pier shaft of high-altitude |
| CN108677739A (en) * | 2018-07-20 | 2018-10-19 | 长沙理工大学 | Temperature deformation correction method and system for cable-stayed bridge and suspension bridge cable tower construction process |
| CN109235268A (en) * | 2018-09-28 | 2019-01-18 | 东莞理工学院 | A kind of construction method of the efficient precompressed of king-post overarm brace |
| CN208545660U (en) * | 2018-07-05 | 2019-02-26 | 北京市市政工程设计研究总院有限公司 | A kind of bridge elasticity support system of self-supporting steel structure |
| JP2019031781A (en) * | 2017-08-04 | 2019-02-28 | 大成建設株式会社 | Removal method of cantilevered overhang work vehicle |
| CN110565546A (en) * | 2019-09-09 | 2019-12-13 | 长沙理工大学 | Detachable device for assembling prestress for bridge structure and reinforcing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100443343B1 (en) * | 2001-12-21 | 2004-08-09 | 황낙연 | Apparatus for Rotating Bridge Superstructure |
| CN208869950U (en) * | 2018-08-29 | 2019-05-17 | 中铁武汉勘察设计研究院有限公司 | More supporting point bridge rotating systems |
-
2020
- 2020-01-22 CN CN202010069589.6A patent/CN111305039B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070104048A (en) * | 2006-04-21 | 2007-10-25 | 홍광용 | Bridge upper plate turning method |
| CN204401436U (en) * | 2014-12-30 | 2015-06-17 | 广东省公路勘察规划设计院股份有限公司 | A kind of solely tower single cable plane wide cut steel concrete hybrid beam cable stayed bridge |
| CN205839575U (en) * | 2016-06-20 | 2016-12-28 | 中铁六局集团天津铁路建设有限公司 | A kind of swivel bridges supporting apparatus |
| CN106677070A (en) * | 2016-12-31 | 2017-05-17 | 中铁局集团有限公司 | Construction support and method for overhead large-span heavy-duty cross beam |
| CN106702909A (en) * | 2017-01-26 | 2017-05-24 | 中建三局集团有限公司 | Integral swiveling structure for double-body steel box girder and construction method thereof |
| CN207159819U (en) * | 2017-06-15 | 2018-03-30 | 中铁十六局集团第三工程有限公司 | A kind of Sarasota crossbeam installs supporting construction |
| JP2019031781A (en) * | 2017-08-04 | 2019-02-28 | 大成建設株式会社 | Removal method of cantilevered overhang work vehicle |
| CN107447682A (en) * | 2017-09-20 | 2017-12-08 | 华北水利水电大学 | A kind of bridge rotation construction structure and implementation |
| CN107916624A (en) * | 2017-11-24 | 2018-04-17 | 武汉海润工程设备有限公司 | A kind of unequal asymmetric swivel equipment of swivel center both ends swivel weight |
| CN207582319U (en) * | 2017-11-30 | 2018-07-06 | 江门市政企业集团有限公司 | A kind of pre-stressed bridge deflection adjusting device based on municipal bridge field |
| CN207904783U (en) * | 2018-02-06 | 2018-09-25 | 中铁二院昆明勘察设计研究院有限责任公司 | Rotary body device in the middle part of the pier shaft of high-altitude |
| CN108487079A (en) * | 2018-04-12 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of the pier bottom rotation swivel construction method and system of double thin-wall piers |
| CN208545660U (en) * | 2018-07-05 | 2019-02-26 | 北京市市政工程设计研究总院有限公司 | A kind of bridge elasticity support system of self-supporting steel structure |
| CN108677739A (en) * | 2018-07-20 | 2018-10-19 | 长沙理工大学 | Temperature deformation correction method and system for cable-stayed bridge and suspension bridge cable tower construction process |
| CN109235268A (en) * | 2018-09-28 | 2019-01-18 | 东莞理工学院 | A kind of construction method of the efficient precompressed of king-post overarm brace |
| CN110565546A (en) * | 2019-09-09 | 2019-12-13 | 长沙理工大学 | Detachable device for assembling prestress for bridge structure and reinforcing method |
Non-Patent Citations (1)
| Title |
|---|
| 稀索转体斜拉桥主梁采用支架法施工的技术要点;宋杰等;《公路交通技术》;20040430(第2期);第61-63、66页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111305039A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110863441A (en) | Single-column pier bridge reinforcing device for preventing overturning and falling of beam and installation method thereof | |
| CN105507169B (en) | Tensioning and anchoring device for reinforcing reinforced concrete bridge through prestress FRP(fiber reinforced plastic) cloth and reinforcing method | |
| CN111305039B (en) | Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof | |
| CN112695952A (en) | Building roof truss support structure and construction method | |
| CN105604183A (en) | Construction method of rear welded joints of a truss | |
| CN111827483B (en) | Construction method for roof curved surface # -shaped combined steel truss girder | |
| CN210086886U (en) | Stand underpins device | |
| CN111188278A (en) | Jig frame structure, jig frame assembly and construction method | |
| CN217325056U (en) | Self-stabilizing device for building single pier column cantilever bent cap by core-piercing rod method | |
| CN211340483U (en) | Reinforced structure for improving stability of single-column pier bridge | |
| CN210975570U (en) | Operation platform for construction of large-section steel-concrete composite beam | |
| CN112392141A (en) | Large cantilever structure for balancing insufficient end pressure weight and construction method thereof | |
| CN210177354U (en) | Anti-seismic pier assembly | |
| CN114319935A (en) | Temporary back-jacking support construction method | |
| CN215168311U (en) | Temporary supporting structure for reinforcing and reforming cultural relics | |
| CN217205541U (en) | Lifting controlled swing frame in column of reinforced steel frame structure | |
| CN214116279U (en) | Flange counter-pulling type cable-stayed bridge main tower upper cross beam construction support | |
| CN217399430U (en) | Device is assembled to preloading arch bridge support normal position of exempting from to pile | |
| CN100404761C (en) | Method for balancing overturning force of major structure by foundation weight balancing | |
| CN114215386B (en) | Supporting device for reversely dismantling high-rise structure and using method thereof | |
| CN216474538U (en) | A combination formula staple bolt for pier stud bent cap construction | |
| CN220246693U (en) | Adjustable active transverse strut device of single-tower cable-stayed bridge | |
| CN218984772U (en) | Reinforcing steel bar storage rack | |
| CN115262633A (en) | Toughening device for existing underground space structure and construction method | |
| CN220318395U (en) | Steel construction bridge reinforcing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |