CN114351601A - Reaction frame device for bridge rotation construction and construction method thereof - Google Patents
Reaction frame device for bridge rotation construction and construction method thereof Download PDFInfo
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- CN114351601A CN114351601A CN202111507408.4A CN202111507408A CN114351601A CN 114351601 A CN114351601 A CN 114351601A CN 202111507408 A CN202111507408 A CN 202111507408A CN 114351601 A CN114351601 A CN 114351601A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 134
- 238000010276 construction Methods 0.000 title claims description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 126
- 239000010959 steel Substances 0.000 claims abstract description 126
- 230000002441 reversible effect Effects 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
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- 238000005728 strengthening Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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- 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
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Abstract
The invention discloses a reaction frame device for a bridge rotator, which comprises a reaction frame, wherein a jack is arranged on one side of the reaction frame, which is close to a supporting leg; the reaction frame is of a steel structure, is fixed on the slide way and is arranged symmetrically in a neutral manner along the circle center of the slide way; under the boosting working condition and the reverse pushing working condition, the relative positions of the reaction frame and the supporting feet are different, and the installation directions of the jack on the reaction frame are different; taking the bridge rotation direction as the front, under the boosting working condition, the reaction frame is arranged behind the supporting feet, and the boosting direction of the jack is consistent with the rotation direction of the bridge rotation; under the reverse pushing working condition, the reaction frame is arranged in front of the supporting foot, and the boosting direction of the jack is opposite to the rotating direction of the rotating bridge. The reaction frame device does not need to be pre-embedded on the bearing platform in advance, can be installed at any position of the circumferential direction of the slideway when boosting or reverse pushing is needed, and has the advantages of simple structure, low price, repeated utilization and engineering cost saving.
Description
Technical Field
The invention belongs to the technical field of bridge engineering turning construction, and particularly relates to a reaction frame device for bridge turning construction and a construction method thereof.
Background
In recent years, with the construction of high-speed railways and highways, a large number of large bridges spanning railways or highways are developed in succession, and according to the file requirements of the national iron group power and electricity department (power and electronics department of the industry and railways) on the examination and construction safety management of engineering schemes for strengthening (crossing) railway business lines and business lines close to the business lines and the like (the work bridge housing [ 2020 ] No. 48), a swivel construction scheme is preferentially adopted in the construction of such bridges. In the initial design stage of the swivel construction scheme, concrete counter-force piers are required to be arranged on the inner side and the outer side of the slide way in order to overcome working conditions of friction torque (forward pushing supporting feet) in the process that a swivel ball hinge moves from static to dynamic, reverse rotation (reverse pushing supporting feet) after the bridge rotates excessively and the like.
The concrete counter-force pier plane layout schematic diagram in the prior art is shown in fig. 1 and 2, the outer side concrete counter-force pier 22 and the inner side concrete counter-force pier are respectively arranged at two sides of the slide way 11 and are poured with the bottom bearing platform into an integral structure, the supporting feet 44 slide between the inner side concrete counter-force pier and the outer side concrete counter-force pier, if the traction force of the traction cable of the upper turning bridge is insufficient, the counter-force piers are used as the backs of the jacks, the supporting feet are pushed by the jacks, and the bridge turning is realized under the combined action of the traction force of the traction cable and the thrust of the jacks. In the prior art, the concrete counterforce pier is a temporary device, and when the traction force is large enough and excessive rotation does not occur in the actual rotation process, the counterforce pier does not work and is only used as a safety precaution measure. For such a counter-force pier, the following drawbacks exist:
1) the position of the counterforce pier is fixed, and the requirement of pushing the supporting leg at any circumferential position cannot be met;
2) the counterforce pier needs to be cast by a template after the lower bearing platform is cast, so that the construction time is prolonged;
3) if the arrangement of the counterforce pier exceeds the range of the sealing hinge, the counterforce pier needs to be cut off before the sealing hinge for attractive appearance, so that resource waste is caused;
4) this reaction mound sets up the outside in the arm-brace usually, because the bridge must use rigidity displacement mutation method to carry out the test of weighing before turning, this experiment requires the bridge to have certain perpendicular displacement of turning along the spherical hinge centre of sphere, so certain clearance must be left with the slide top surface in arm-brace bottom surface, and this clearance must be cleared up before weighing, can not influence the perpendicular debris of turning of bridge. And the stand bar is arranged in the middle of the concrete counter-force piers on the inner side and the outer side, and the stand bar cannot be detached before weighing, so that the clearance of the stand bar clearance is influenced by the existence of the concrete counter-force pier, and the construction is inconvenient.
For the above reasons, the reaction pier may be subjected to additional work and construction time in actual work, and may not be reused. Therefore, it is necessary to further optimize the design of the existing concrete reaction pier, solve the functional requirements, reduce the engineering cost and simplify the field construction.
Disclosure of Invention
Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides the reaction frame device for bridge rotation construction, which is not required to be pre-embedded on a bearing platform in advance, and can be installed at any position in the circumferential direction of a slide way when boosting or reverse pushing is required, so that the functional requirement of pushing a supporting foot at any position is met.
In order to achieve the above object, according to one aspect of the present invention, there is provided a reaction frame device for a bridge rotation body, comprising a reaction frame, wherein a jack is installed on one side of the reaction frame, which is close to a supporting foot;
the reaction frame is of a steel structure, is fixed on the slideway and is arranged symmetrically in a neutral manner along the circle center of the slideway; under the boosting working condition and the reverse pushing working condition, the relative positions of the reaction frame and the supporting feet are different, and the installation directions of the jack on the reaction frame are different; taking the bridge rotation direction as the front, under the boosting working condition, the reaction frame is arranged behind the supporting feet, and the boosting direction of the jack on the reaction frame is consistent with the rotation direction of the bridge to be rotated; under the reverse pushing working condition, the reaction frame is arranged in front of the supporting feet, and the boosting direction of the jack on the reaction frame is opposite to the direction of the turning body of the turning bridge.
As a further improvement of the invention, the reaction frame comprises connecting section steels which are transversely arranged in parallel, vertical column section steels are correspondingly arranged in the middle of the connecting section steels on two sides, and oblique first reinforcing rib section steels and oblique second reinforcing rib section steels are respectively fixed between the column section steels and the connecting section steels.
As a further improvement of the invention, two ends of the movable section steel are respectively inserted into a triangular area formed by the connecting section steel, the upright column section steel and the first reinforcing rib section steel or the second reinforcing rib section steel.
As a further improvement of the invention, the connecting section steel, the upright column section steel, the first reinforcing rib section steel, the second reinforcing rib section steel and the movable section steel are one or more of I-shaped steel, channel steel, angle steel or square steel.
As a further improvement of the invention, the jack is fixed on the movable section steel and corresponds to the supporting foot.
In a further improvement of the present invention, at least one pair of the reaction frames is provided on the slide.
As a further improvement of the invention, the reaction frame is of a symmetrical structure.
As a further improvement of the invention, the reaction frame is integrally positioned on the slideway.
According to another aspect of the present invention, there is provided a method for constructing a reaction frame device for a bridge swivel, the method comprising the steps of:
s1: positioning the installation position of the reaction frame: taking the bridge rotation direction as the front, under the boosting working condition, the reaction frame is arranged behind the supporting feet, and the boosting direction of the jack is consistent with the rotation direction of the bridge rotation; under the working condition of reverse pushing, the reaction frame is arranged in front of the supporting foot, and the boosting direction of the jack is opposite to the direction of the rotating body of the rotating bridge;
if the reaction frame is used for boosting during turning starting, the supporting feet are pushed in the same direction as the turning direction of the bridge, and the reaction frame needs to be removed in time after the bridge turns starting so as to avoid blocking the rotation of the supporting feet, so that the boosting process is completed; if the reaction frame is used for pushing back after the over rotation, the brace is pushed in the direction opposite to the rotation direction of the bridge, and the reverse pushing process is completed;
s2: a reaction frame is welded in the slideway, and a welding seam is required to be positioned outside the rotation range of the supporting foot, so that the influence of residual welding seam after the reaction frame is removed on the rotation of the supporting foot is avoided;
s3: inserting movable section steel into a triangular area formed by the connecting section steel, the upright column section steel and the first reinforcing rib section steel or a triangular area formed by the connecting section steel, the upright column section steel and the second reinforcing rib section steel;
s4: and a jack is arranged on one side of the movable section steel close to the supporting foot.
As a further improvement of the invention, in order to ensure the balance of force couple, the reaction frame (1) needs to be installed in a pair-pushing manner in the direction of 180 degrees by taking a spherical hinge as the center.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
(1) the reaction frame device for bridge rotation construction is a single component, does not need to be pre-embedded on a bearing platform in advance, can be installed at any position in the circumferential direction of a slideway when boosting or reverse pushing is needed, solves the functional requirement of pushing a supporting foot at any position, and can be positioned as required and welded on the slideway when pushing is needed, and movable section steel is inserted into a triangular area where the movable section steel is located to be matched with a jack for use so as to realize the pushing requirement.
(2) According to the reaction frame device for bridge rotation construction, a concrete reaction pier does not need to be constructed after the reaction frame device is used, and the construction time of a site is reduced; and the reaction frame device has simple structure, low price and repeated utilization, and saves the engineering cost.
(3) According to the reaction frame device for bridge rotation construction, the earliest installation time of the reaction frame device is before trial rotation, and after the support pin cleaning process, the problem of inconvenience in support pin cleaning is solved, and the reaction frame device is more convenient for field construction.
Drawings
FIG. 1 is a schematic plan view of a concrete reaction pier in the prior art;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic plan view of a boosting operation condition of the reaction frame device for bridge swivel construction according to the embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is a schematic view of a plane layout of a reverse pushing working condition of the reaction frame device for bridge swivel construction according to the embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;
FIG. 7 is a schematic structural view of a reaction frame device for bridge swivel construction according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view taken along line D-D of FIG. 7;
fig. 9 is a top view of a reaction frame device for bridge swivel construction according to an embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-reaction frame, 2-slideway, 3-supporting foot and 4-jack; 101-connecting section steel, 102-upright section steel, 103-first reinforcing rib section steel, 104-second reinforcing rib section steel and 105-movable section steel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
FIG. 3 is a schematic plan view of a boosting operation condition of the reaction frame device for bridge swivel construction according to the embodiment of the present invention; FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3; FIG. 5 is a schematic view of a plane layout of a reverse pushing working condition of the reaction frame device for bridge swivel construction according to the embodiment of the present invention; fig. 6 is a cross-sectional view taken along line C-C of fig. 5. A plurality of supporting feet 3 are arranged on the slideway 2 at intervals, the tops of the supporting feet 3 and the rotary table on the rotary bridge are poured into an integral structure, and a pair of traction ropes (not shown in the figure) is arranged on the rotary table structure in a central symmetry manner.
The reaction frame device comprises a reaction frame 1 and a jack 4, as shown in figures 3 and 4, under the boosting working condition, the reaction frame 1 is arranged on a slide way 2, the rotation direction of a bridge is taken as the front, the reaction frame 1 is arranged behind a supporting foot 3, the boosting direction of the reaction frame 1 is consistent with the rotation direction of the bridge, the jack 4 is arranged on one side of the reaction frame 1 close to the supporting foot 3, the jack 4 corresponds to the supporting foot 3, when the bridge is used for rotating, when the traction force of a traction cable on a rotary table is insufficient, the jack applies force to the supporting foot 3 through the jack, and the bridge and the traction cable jointly realize the rotation of the rotating bridge.
As shown in fig. 5 and 6, if the turning bridge rotates excessively, under the reverse pushing working condition, the reaction frame 1 is installed on the slideway 2, the turning direction of the bridge is taken as the front, the reaction frame 1 is installed in front of the supporting feet 3, at this time, the pushing direction of the reaction frame 1 is opposite to the turning direction of the turning bridge, one side of the reaction frame 1, which is close to the supporting feet 3, is provided with the jack 4, the jack 4 corresponds to the supporting feet 3, and the supporting feet 3 are pushed to rotate the turning bridge to the butt joint position.
In the specific embodiment shown in fig. 3 to 6 of the present invention, the rotation direction of the rotating bridge is counterclockwise, and when the rotation boosting is required, the reaction frame 1 is disposed on one side of the supporting leg 3, so as to push the supporting leg 3 to move counterclockwise along the slideway, thereby realizing the rotation of the rotating bridge; if the bridge needs to be pushed reversely after the bridge is rotated, the reaction frame 1 is arranged on one side opposite to the supporting feet 3, and the supporting feet 3 can be pushed to move clockwise along the slide way until the rotation of the bridge is completed.
It should be noted that, the reaction frames 1 are arranged symmetrically in a neutral manner along the center of circle of the slide way 2, so as to ensure the stability of the bridge at the time of turning, in a specific embodiment shown in the attached drawings, a pair of reaction frames 1 are symmetrically arranged, and if the force applied by a pair of reaction frames is insufficient, a plurality of pairs of reaction frames 1 can be selected and arranged according to the actual situation, but it is required to ensure that each pair of reaction frames are arranged symmetrically in a neutral manner along the center of circle of the slide way 2.
FIG. 7 is a schematic structural view of a reaction frame device for bridge swivel construction according to an embodiment of the present invention; FIG. 8 is a cross-sectional view taken along line D-D of FIG. 7; fig. 9 is a top view of a reaction frame device for bridge swivel construction according to an embodiment of the present invention. Referring to fig. 7 to 9, the reaction frame 1 of the present invention is a symmetrical structure, and includes connection section steel 101, column section steel 102, first reinforcing rib section steel 103, second reinforcing rib section steel 104, and movable section steel 105, wherein parallel connection section steel 101 is disposed on two lateral sides of the reaction frame 1, vertical column section steel 102 is correspondingly disposed in the middle of the connection section steel 101 on the two sides, oblique first reinforcing rib section steel 103 and second reinforcing rib section steel 104 are respectively fixed between the column section steel 102 and the connection section steel 101, and two ends of the movable section steel 105 are respectively inserted into a triangular region formed by the connection section steel 101, the column section steel 102, and the first reinforcing rib section steel 103 or the second reinforcing rib section steel 104.
In the preferred embodiment, the reaction frame is entirely located on the slideway, and the distance between the connecting section steels 101 is less than or equal to the distance of the slideway, but the size of the reaction frame is not particularly limited in the invention as long as the reaction frame can be quickly installed and does not affect the rotation of the rotating bridge.
The reaction frame is composed of steel profiles, wherein the connecting profile steel 101, the upright column profile steel 102, the first reinforcing rib profile steel 103 and the second reinforcing rib profile steel 104 are prefabricated in a welding mode, when the reaction frame is used, the bottom of the connecting profile steel 101 is welded on a slide way, and meanwhile, the movable profile steel 105 is inserted into a triangular area composed of the connecting profile steel 101, the upright column profile steel 102 and the first reinforcing rib profile steel 103 or the connecting profile steel 101, the upright column profile steel 102 and the second reinforcing rib profile steel 104. Therefore, the reaction frame is adopted to replace the reaction pier in the prior art, only when the traction force of the traction cable is insufficient, one or more pairs of reaction frames are installed, and if the traction cable is enough to drive the bridge rotating body, the reaction frame is not needed to be installed for boosting. The reaction frame is used as required, when the pushing requirement exists, the reaction frame device is positioned as required and welded on the slide way, the welding quantity is determined according to the required pushing force, and the movable section steel is inserted into the triangular area where the movable section steel is located, so that the movable section steel can be matched with the jack to realize the pushing requirement. The reaction device is quickly and flexibly mounted, and waste of materials, human bodies and working hours caused by mounting of the reaction pier is avoided.
Optionally, the connecting section steel 101, the column section steel 102, the first reinforcing rib section steel 103, the second reinforcing rib section steel 104, and the movable section steel 105 are made of one or more of section steel materials such as i-steel, channel steel, angle steel, square steel, etc., and those skilled in the art can select the section steel materials by themselves as long as the sections steel materials can be welded to each other and can play a role in stable support.
The reaction frame device of the invention has the following construction process flow:
(1) the mounting position of the reaction frame 1 is positioned, and the mounting positions of two conditions of boosting during the starting of a rotator and back-pushing after over-rotation are noticed to be different;
if the reaction frame 1 is used for boosting during turning starting, the supporting feet are positively pushed (in the same direction as the turning direction of the bridge), and the reaction frame needs to be removed in time after the bridge turns starting so as to avoid blocking the rotation of the supporting feet, so that the boosting process is completed; if the reaction frame 1 is used for pushing back after over rotation, the supporting legs are pushed in a reverse direction (opposite to the direction of the bridge rotation), and a reverse pushing process is completed; in order to ensure the balance of force couple, the reaction frame needs to be pushed and used in pairs in the direction of 180 degrees of the center of the slideway (the center of the spherical hinge);
(2) a reaction frame is welded in the slideway, and a welding seam is required to be positioned outside the rotation range of the supporting foot, so that the influence of residual welding seam after the reaction frame is removed on the rotation of the supporting foot is avoided;
(3) inserting movable section steel 105 into a triangular area formed by the connecting section steel 101, the column section steel 102 and the first reinforcing rib section steel 103 or a triangular area formed by the connecting section steel 101, the column section steel 102 and the second reinforcing rib section steel 104;
(4) a jack 4 is arranged on one side of the movable steel bar 105 close to the supporting foot 3.
The reaction frame device for bridge swivel construction replaces a concrete reaction pier in the prior art, is of an I-shaped steel section welding structure, is a single component, does not need to be pre-embedded on a bearing platform in advance, can be installed at any position in the circumferential direction of a slideway when boosting or reverse pushing is needed, and solves the functional requirement of pushing a supporting foot at any position; after the reaction frame device is used, a concrete reaction pier does not need to be constructed, so that the construction time of a site is reduced; the reaction frame device has simple structure and low price, can be repeatedly used and saves the engineering cost; the earliest installation time of the reaction frame device is before trial rotation, and after the supporting foot cleaning process, the problem of inconvenient supporting foot cleaning is solved, and the field construction is more convenient.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A reaction frame device for bridge rotation bodies is characterized by comprising a reaction frame (1), wherein a jack (4) is installed on one side, close to a supporting leg (3), of the reaction frame (1);
the reaction frame (1) is of a steel structure, is fixed on the slide way (2), and is arranged symmetrically along the center of the slide way (2); under the boosting working condition and the reverse pushing working condition, the relative positions of the reaction frame (1) and the supporting feet (3) are different, and the installation directions of the jacks (4) on the reaction frame are different; the bridge rotation direction is taken as the front, under the boosting working condition, the reaction frame (1) is arranged behind the supporting feet (3), and the boosting direction of the jack (4) on the reaction frame (1) is consistent with the direction of the rotation of the bridge; under the reverse pushing working condition, the reaction frame (1) is arranged in front of the supporting feet (3), and the boosting direction of the jack (4) on the reaction frame (1) is opposite to the direction of the turning body of the turning bridge.
2. The reaction frame device for the bridge rotor according to claim 1, wherein the reaction frame (1) comprises connecting section steels (101), the connecting section steels (101) are transversely arranged in parallel, vertical column section steels (102) are correspondingly arranged in the middle of the connecting section steels (101) on two sides, and oblique first reinforcing rib section steels (103) and oblique second reinforcing rib section steels (104) are respectively fixed between the column section steels (102) and the connecting section steels (101).
3. The reaction frame device for bridge rotor according to claim 2, wherein both ends of the movable section steel (105) are respectively inserted into the triangular area formed by the connecting section steel (101), the column section steel (102) and the first reinforcing rib section steel (103) or the second reinforcing rib section steel (104).
4. The reaction frame device for a bridge rotor according to claim 3, wherein the connection section steel (101), the column section steel (102), the first reinforcing rib section steel (103), the second reinforcing rib section steel (104) and the movable section steel (105) are one or more of I-shaped steel, channel steel, angle steel or square steel.
5. Reaction frame device for bridge swivels according to claim 3, characterized in that said jack (4) is fixed to said movable section steel (105) in correspondence of a brace (3).
6. Reaction frame device for a bridge swivel according to any of claims 1-5, characterised in that the reaction frame (1) is provided in at least one pair on a slideway (2).
7. Reaction frame device for a bridge swivel according to any of claims 1-5, characterised in that the reaction frame (1) is of a symmetrical construction.
8. Reaction frame device for a bridge swivel according to any of claims 1-5, characterised in that the reaction frame (1) is located entirely on a slide.
9. A construction method of a reaction frame device for a bridge swivel, which is used for the reaction frame device for the bridge swivel according to any one of claims 1 to 8, and is characterized by comprising the following steps:
s1: positioning the installation position of the reaction frame (1);
if the reaction frame (1) is used for boosting during turning starting, the supporting feet are pushed in the same direction as the turning direction of the bridge, and the reaction frame needs to be removed in time after the bridge turns starting so as to avoid blocking the rotation of the supporting feet, so that the boosting process is completed; if the reaction frame (1) is used for pushing back after the over-rotation, the support leg is pushed in the direction opposite to the rotation direction of the bridge, and the reverse pushing process is completed;
s2: welding a reaction frame (1) in the slideway;
s3: inserting movable section steel (105) into a triangular area formed by the connecting section steel (101), the column section steel (102) and the first reinforcing rib section steel (103) or a triangular area formed by the connecting section steel (101), the column section steel (102) and the second reinforcing rib section steel (104);
s4: a jack (4) is arranged on one side of the movable section steel (105) close to the supporting foot (3).
10. The construction method of the reaction frame device for the bridge rotor according to claim 8, wherein the reaction frames (1) are installed in a pair-wise pushing manner in the direction of 180 degrees of the center of the slideway in order to ensure the balance of force couple.
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| CN202111507408.4A CN114351601B (en) | 2021-12-10 | 2021-12-10 | Reaction frame device for bridge swivel construction and construction method thereof |
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| CN202111507408.4A CN114351601B (en) | 2021-12-10 | 2021-12-10 | Reaction frame device for bridge swivel construction and construction method thereof |
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| CN114351601B CN114351601B (en) | 2023-11-28 |
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| CN110144830A (en) * | 2019-04-28 | 2019-08-20 | 中国铁路设计集团有限公司 | A kind of bridge pier top body rotation construction method |
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| CN113373828A (en) * | 2021-05-27 | 2021-09-10 | 武汉一冶建筑安装工程有限责任公司 | Bridge turning system and installation and turning method thereof |
| WO2022151827A1 (en) * | 2021-01-14 | 2022-07-21 | 中铁工程设计咨询集团有限公司 | Pier top swivel method for continuous steel truss |
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| WO2022151827A1 (en) * | 2021-01-14 | 2022-07-21 | 中铁工程设计咨询集团有限公司 | Pier top swivel method for continuous steel truss |
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