CN112030713B - Large-span single-oblique-arch cable-stayed landscape bridge and self-balancing high-altitude vertical rotation construction method - Google Patents
Large-span single-oblique-arch cable-stayed landscape bridge and self-balancing high-altitude vertical rotation construction method Download PDFInfo
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- CN112030713B CN112030713B CN202010913753.7A CN202010913753A CN112030713B CN 112030713 B CN112030713 B CN 112030713B CN 202010913753 A CN202010913753 A CN 202010913753A CN 112030713 B CN112030713 B CN 112030713B
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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
- E01D12/00—Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
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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
- E01D19/00—Structural or constructional details of 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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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
Abstract
The invention provides a large-span monoclinic arch cable-stayed landscape bridge, which relates to the technical field of bridges and comprises a main arch, a main arch foundation, a bridge deck beam and a plurality of structural cables, wherein the main arch foundation is rotationally connected with two ends of the main arch and is positioned on the ground; the construction method comprises the steps that the bridge deck beam and the main arch are horizontally assembled in place on the mountain top, and the bridge deck beam is positioned above the main arch; vertically rotating the bridge deck beam to form a designed included angle with the main arch, and tensioning the structural cable; the main arch is vertically rotated, the bridge deck beam rotates along with the main arch due to self weight, and the main arch and the bridge deck beam reach the designed positions at the same time. The landscape bridge can span two cliffs to realize the walking and sightseeing experience between the high-altitude cliffs with the stimulation of tourists, and the landscape bridge has the advantages of simple structure, attractive appearance, convenient construction due to the adopted construction method, high installation efficiency, short construction period and high safety, and can realize the integral installation of the bridge only by adopting a rotary jacking method.
Description
Technical Field
The invention relates to a large-span single-oblique-arch cable-stayed landscape bridge and a self-balancing high-altitude vertical rotation construction method, and belongs to the technical field of bridges.
Background
Along with the development of economy and science and technology, the income per capita is continuously improved, tourism becomes one of the ways of leisure and entertainment in the daily life of the national people, simple natural scenery cannot meet the scenery of many people, more people want to enjoy the natural scenery, and meanwhile, the scenery has a plurality of different visual angles and stimulation, for example, when standing on a cliff to see the scenery, people can move forward, but because the cliff itself is used as a scenic spot for tourism and sightseeing without protective measures, the scenery is monotonous and dangerous, a sightseeing bridge can be erected between two cliffs, tourists can walk on the bridge, the tourists can be enabled to be seemed as if being in the air, and the safety of the tourists in the scenic area can be ensured while sensory stimulation is provided for the tourists.
Therefore, a large-span single-oblique-arch cable-stayed landscape bridge is developed in the scheme, and a self-balancing high-altitude vertical rotation construction method is developed for the large-span single-oblique-arch cable-stayed landscape bridge.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a large-span single-oblique-arch cable-stayed landscape bridge and a self-balancing high-altitude vertical rotation construction method.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a large-span single oblique arch cable-stayed landscape bridge comprises a main arch, a main arch foundation, a bridge deck beam and a plurality of structural cables, wherein the main arch foundation is rotationally connected with two ends of the main arch and is positioned on the ground; a design angle of 120 degrees is formed between the main arch and the bridge surface beam; the two ends of the main arch are internally provided with support saddles and are connected with the main arch foundation through a rotating shaft; and two ends of the main arch are connected with horizontal pull cables.
A high-altitude vertical rotation construction method for a large-span single-oblique-arch cable-stayed landscape bridge comprises the following steps:
(1) the bridge deck beams and the main arches are horizontally assembled in place on the mountain tops, and the bridge deck beams are positioned above the main arches;
(2) vertically rotating the bridge deck beam to form a designed included angle with the main arch, and tensioning the structural cable;
(3) the main arch is vertically rotated, the bridge deck beam rotates along with the main arch due to self weight, and the main arch and the bridge deck beam reach the designed positions at the same time.
Further, before the step (1), a rotary jacking device is arranged on the top of the mountain, and the rotation of the bridge surface beam in the step (2) and the rotation of the main arch in the step (3) are realized through the rotary jacking device.
Furthermore, the rotary jacking device comprises a steel column, a steel column foundation, a crawler, an anchor ear and a stressed claw, wherein the steel column foundation is rotationally connected with the bottom of the steel column and is positioned on the ground; the stress claw is used for connecting a main arch or a bridge surface beam of the bridge.
Furthermore, a track is arranged on the steel column, and the crawler advances and is fastened on the track.
Furthermore, the crawler comprises a hydraulic oil cylinder and a lockable foot, the top of a piston rod of the hydraulic oil cylinder is connected with the anchor ear, the bottom of the hydraulic oil cylinder is connected with the lockable foot, and the contractible foot is arranged on the track and can be locked or loosened on the track; four tracks are uniformly distributed at intervals, four crawlers are arranged, and one crawler is arranged on each corresponding track.
Further, in the step (2), when the bridge deck beam and the main arch rotate to the designed angle, the rotating joints of the bridge deck beam and the main arch are welded to form rigid welding.
Further, between the step (1) and the step (2), a step is further included: horizontal guy cable devices are arranged at two ends of the main arch; the two ends of the main arch are connected with the main arch foundation through the supports, the supports on the two sides of the main arch are connected with the upper horizontal inhaul cables when the main arch is rotated, the horizontal thrust of the supports of the main arch on the foundations on the two sides is offset through different tension control, and the tension is inconsistent in each rotating process and needs to be adjusted at any time.
Further, in the step (3), when the main arch and the bridge deck beam rotate to the designed positions, the support of the main arch and the main arch foundation are welded to form rigid connection, and the whole bridge is constructed in place.
The invention has the beneficial technical effects that: the large-span single-oblique-arch cable-stayed landscape bridge can span two cliffs to realize the walking and sightseeing experience between the high-altitude cliffs with the stimulation of tourists.
Drawings
FIG. 1 is a schematic view of the overall structure of a large-span single-skew-arch cable-stayed landscape bridge according to the embodiment;
FIG. 2 is a side view of the large-span single-skew-arch cable-stayed landscape bridge according to the embodiment;
FIG. 3 is a schematic structural view of the main arch of the large-span single-oblique-arch cable-stayed landscape bridge of the embodiment being lifted by rotation;
FIG. 4 is a schematic view of the connection between the rotary jacking device and the main arch in the large-span single-skew-arch cable-stayed landscape bridge according to the embodiment;
fig. 5 is an enlarged view of the junction of the rotary jacking device and the main arch in the large-span single-skew-arch cable-stayed landscape bridge of the embodiment;
fig. 6 to 9 are schematic views illustrating a process of rotating the jacking bridge deck beam;
fig. 10 to 11 are schematic views illustrating a process of rotating and jacking up a main arch (a bridge deck beam together with its own weight).
Description of the labeling: bridge notation description: the device comprises a bridge deck beam 1, a main arch 2, a main arch support 21, a main arch foundation 22, a rotary jacking device 3, a steel column 31, a steel column support 32 (hinged support), a steel column foundation 33, a rail 34, a crawler 4, a hydraulic oil cylinder 41, a locking foot 42, an anchor ear 43, a stress claw 44 and a structural cable 5.
Detailed Description
In order to make the technical means and technical effects achieved by the technical means of the present invention more clearly and more perfectly disclosed, the following embodiments are provided, and the following detailed description is made with reference to the accompanying drawings:
as shown in fig. 1 and 2, the large-span single-oblique-arch cable-stayed landscape bridge of the present embodiment includes a main arch, a main arch foundation rotatably connected to both ends of the main arch and located on the ground, a bridge deck beam rotatably connected to the main arch, and a plurality of structural cables connecting the main arch and the bridge deck beam; a design angle of 120 degrees is formed between the main arch and the bridge surface beam; the two ends of the main arch are internally provided with the support and are connected with the main arch foundation through the rotating shaft; two ends of the main arch are connected with horizontal guy cables. When the main arch is rotated, the supports on the two sides of the main arch are connected with the upper horizontal stay cables, and the horizontal thrust of the supports of the main arch on the foundations on the two sides is counteracted through different tension control, so that the bonding strength of the main arch and the main arch foundation is ensured.
In addition, in the embodiment, the main arch and the main arch foundation are in rotating connection before the installation is finished, so that the rotary jacking installation is facilitated, and the main arch foundation are in rigid connection after the installation is finished, so that the strength of the bridge is ensured; the main arch is rotatably connected with the bridge surface beam before the installation is completed, so that the rotary jacking installation is facilitated, and the main arch is rigidly connected with the bridge surface beam after the installation is completed, so that the strength of the bridge is ensured.
In the embodiment, the two ends of the main arch are internally provided with the supporting seats and are connected with the main arch foundation through the rotating shaft, so that the main arch can be rotatably jacked.
The high-altitude vertical rotation construction method for the large-span single-oblique-arch cable-stayed landscape bridge comprises the following steps:
(1) the bridge deck beams and the main arches are horizontally assembled in place on the mountain tops, and the bridge deck beams are positioned above the main arches;
(2) vertically rotating the bridge deck beam to form a designed included angle with the main arch, and tensioning the structural cable (in the process, the included angle between the bridge deck beam and the main arch is gradually increased until the designed included angle is formed, and the structural cable is gradually tensioned);
(3) the main arch is vertically rotated, the bridge deck beam rotates along with the main arch due to self weight, and the main arch and the bridge deck beam reach the designed positions at the same time.
Preferably, in this embodiment, before step (1), a rotary jacking device is arranged at the top of the mountain, and both the rotation of the bridge surface beam in step (2) and the rotation of the main arch in step (3) are realized by the rotary jacking device.
Preferably, the rotary jacking device comprises a steel column, a steel column foundation, a crawler, an anchor ear and a stressed claw, wherein the steel column foundation is rotatably connected with the bottom of the steel column and is positioned on the ground; the stressed claws are used for connecting a main arch or a bridge surface beam of the bridge. The rotary jacking device is connected with the jacked bridge surface beam when jacking the bridge surface beam, and the rotary jacking device is connected with the main arch when jacking the main arch.
In the preferred embodiment, the steel column is provided with a track, and the crawler advances and is fastened on the track.
Preferably, the crawler comprises a hydraulic oil cylinder and a lockable foot, the top of a piston rod of the hydraulic oil cylinder is connected with the anchor ear, the bottom of the hydraulic oil cylinder is connected with the lockable foot, and the contractible foot is arranged on the track and can be locked or loosened on the track; four tracks are uniformly distributed at intervals, four crawlers are arranged, and one crawler is arranged on each corresponding track. Four crawlers divide into two pairs (the front and back is a pair, control and be a pair) and work respectively, when a pair of crawlers locking track was synchronous jacking, another pair unclamped, when a stroke was accomplished in the jacking, this pair of crawlers of locking jacking originally unclamped, but the locking foot of this pair of crawlers of unclamping originally was held tightly, carries out the jacking of next stroke to guarantee that all there are two crawlers and steel column to link to each other at every moment. The locking method of the lockable foot can be used for holding by applying enough pressure to the track, so that the acting force from the hoop is smaller than the friction force between the lockable foot and the track, and the locking can be realized.
In this embodiment, preferably, in the step (2), when the bridge deck beam and the main arch are rotated to the designed angle, the two rotation joints are spot-welded to form a rigid joint.
Preferably, in this embodiment, between step (1) and step (2), further comprising a step of: horizontal guy cable devices are arranged at two ends of the main arch; the two ends of the main arch are connected with the main arch foundation through the supports, the supports on the two sides of the main arch are connected with the upper horizontal stay cables when the main arch is rotated, and the horizontal thrust of the supports of the main arch on the foundations on the two sides is counteracted through different tension control, so that the bonding strength of the main arch and the main arch foundation is ensured.
Preferably, in the step (3), when the main arch and the bridge deck beam rotate to the designed positions, the support of the main arch and the main arch foundation are welded to form rigid connection, and the whole bridge is constructed in place.
The above description is provided for the purpose of further elaboration of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be understood that the embodiments of the present invention are limited to the above description, and it should be understood that various simple deductions or substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and all such alternatives are included in the scope of the present invention.
Claims (7)
1. A self-balancing high-altitude vertical rotation construction method of a large-span single-oblique-arch cable-stayed landscape bridge is characterized by comprising the following steps:
the span single-oblique-arch cable-stayed landscape bridge comprises a main arch, a main arch foundation, a bridge deck beam and a plurality of structural cables, wherein the main arch foundation is rotationally connected with two ends of the main arch and is positioned on the ground; a design angle of 120 degrees is formed between the main arch and the bridge surface beam; the two ends of the main arch are internally provided with support saddles and are connected with the main arch foundation through a rotating shaft; the two ends of the main arch are connected through a horizontal inhaul cable;
the construction method comprises the following steps:
(1) the bridge deck beams and the main arches are horizontally assembled in place on the mountain tops, and the bridge deck beams are positioned above the main arches;
(2) vertically rotating the bridge deck beam to form a designed included angle with the main arch, and tensioning the structural cable;
(3) the main arch is vertically rotated, the bridge deck beam rotates along with the main arch due to self weight, and the main arch and the bridge deck beam reach design positions simultaneously; before the step (1), a rotary jacking device is arranged on the top of the mountain, and the rotation of the bridge surface beam in the step (2) and the rotation of the main arch in the step (3) are realized through the rotary jacking device.
2. The high-altitude vertical rotation construction method of the large-span single-oblique-arch cable-stayed landscape bridge, as claimed in claim 1, is characterized in that: the rotary jacking device comprises a steel column, a steel column foundation, a crawler, an anchor ear and a stressed claw, wherein the steel column foundation is rotatably connected with the bottom of the steel column and is positioned on the ground; the stress claw is used for connecting a main arch or a bridge surface beam of the bridge.
3. The high-altitude vertical rotation construction method of the large-span single-oblique-arch cable-stayed landscape bridge, as claimed in claim 2, is characterized in that: and a track is arranged on the steel column, and the crawler advances and is fastened on the track.
4. The high-altitude vertical rotation construction method of the large-span single-oblique-arch cable-stayed landscape bridge according to claim 3, characterized in that: the crawler comprises a hydraulic oil cylinder and a lockable foot, the top of a piston rod of the hydraulic oil cylinder is connected with the anchor ear, the bottom of the hydraulic oil cylinder is connected with the lockable foot, and the lockable foot is arranged on the track and can be locked or unlocked on the track; four tracks are uniformly distributed at intervals, four crawlers are arranged, and one crawler is arranged on each corresponding track.
5. The high-altitude vertical rotation construction method of the large-span single-oblique-arch cable-stayed landscape bridge, as claimed in claim 1, is characterized in that: and (2) welding the rotary joints of the bridge deck beam and the main arch to form rigid joint when the bridge deck beam and the main arch rotate to a designed angle.
6. The high-altitude vertical rotation construction method of the large-span single-oblique-arch cable-stayed landscape bridge, as claimed in claim 1, is characterized in that: between the step (1) and the step (2), the method further comprises the following steps: horizontal cable devices are arranged at two ends of the main arch, and horizontal thrust of the bridge deck beam support to the main arch connecting nodes at two sides is counteracted through different tension control, so that self-balance is achieved; two ends of the main arch are connected with the main arch foundation through the support, the support at two sides of the main arch is required to be connected with the horizontal stay cable when the main arch is rotated, and the horizontal thrust of the support of the main arch to the foundation at two sides is counteracted through different tension control so as to achieve self-balance; the tension is not consistent in each rotation process and needs to be adjusted at any time.
7. The high-altitude vertical rotation construction method of the large-span single-oblique-arch cable-stayed landscape bridge, as claimed in claim 1, is characterized in that: in the step (3), when the main arch and the bridge deck beam rotate to the designed positions, the support of the main arch is welded with the main arch foundation to form rigid connection, and the whole bridge is constructed in place.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010913753.7A CN112030713B (en) | 2020-09-03 | 2020-09-03 | Large-span single-oblique-arch cable-stayed landscape bridge and self-balancing high-altitude vertical rotation construction method |
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| CN202010913753.7A CN112030713B (en) | 2020-09-03 | 2020-09-03 | Large-span single-oblique-arch cable-stayed landscape bridge and self-balancing high-altitude vertical rotation construction method |
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| CN112030713A CN112030713A (en) | 2020-12-04 |
| CN112030713B true CN112030713B (en) | 2022-04-15 |
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| CN114232457A (en) * | 2021-12-28 | 2022-03-25 | 四川美术学院 | Large-span cliff wall overhanging structure |
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| CN107524090A (en) * | 2017-09-06 | 2017-12-29 | 中铁四局集团第二工程有限公司 | Steel pipe arch bridge arch rib jacks assembling and construction method |
| CN110804932A (en) * | 2019-12-12 | 2020-02-18 | 广州揽睿路桥设计有限公司 | Bridge floor can open pendulum-type slope tied arch bridge |
| CN110820529A (en) * | 2019-12-12 | 2020-02-21 | 广州揽睿路桥设计有限公司 | Tower cable-stayed bridge with openable bridge deck |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU881178A1 (en) * | 1980-02-25 | 1981-11-15 | Хабаровский политехнический институт | Roll-out operable bridge |
| JP4522941B2 (en) * | 2005-11-04 | 2010-08-11 | 三井住友建設株式会社 | How to dismantle and remove the arch bridge |
| CN101446075B (en) * | 2008-12-30 | 2010-07-21 | 江苏沪宁钢机股份有限公司 | Synchronous vertical swing lift construction method for double inclination arc tower |
| CN101871198B (en) * | 2010-07-16 | 2011-12-14 | 上海同济宝冶建设机器人有限公司 | Vertical turning lifting installation method for steel bridge arch ribs |
| CN204325942U (en) * | 2014-12-15 | 2015-05-13 | 武汉市市政建设集团有限公司 | Cable stayed bridge arch tower vertical turn deformation controller in hole |
| CN107245935B (en) * | 2017-07-27 | 2019-02-05 | 重庆水利电力职业技术学院 | Arch tower viaduct |
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- 2020-09-03 CN CN202010913753.7A patent/CN112030713B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524090A (en) * | 2017-09-06 | 2017-12-29 | 中铁四局集团第二工程有限公司 | Steel pipe arch bridge arch rib jacks assembling and construction method |
| CN110804932A (en) * | 2019-12-12 | 2020-02-18 | 广州揽睿路桥设计有限公司 | Bridge floor can open pendulum-type slope tied arch bridge |
| CN110820529A (en) * | 2019-12-12 | 2020-02-21 | 广州揽睿路桥设计有限公司 | Tower cable-stayed bridge with openable bridge deck |
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