CN218233177U

CN218233177U - Vertical rotation auxiliary structure of steel bridge tower

Info

Publication number: CN218233177U
Application number: CN202222189265.3U
Authority: CN
Inventors: 王辉; 唐阳; 饶群超; 黄春茂
Original assignee: China Railway 18th Bureau Group Co Ltd; Building Installation Engineering Co Ltd of China Railway 18th Bureau Group Co Ltd
Current assignee: China Railway 18th Bureau Group Co Ltd; Building Installation Engineering Co Ltd of China Railway 18th Bureau Group Co Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-01-06
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses a vertical rotation auxiliary structure of a steel bridge tower, which comprises a main girder bridge, a vertical rotation component and an anti-over-rotation component; the vertical rotation component comprises a pressure lever, a traction cable, a pull cable and two rear anchor point components, a hinged support is arranged on the bridge surface of the main girder bridge corresponding to the rotation position of the steel bridge tower to be rotated, and one end of the pressure lever is hinged with the hinged support; the two rear anchor point assemblies are arranged on two sides of the lower end of the bridge deck of the main beam bridge; one end of the inhaul cable is connected with the upper part of the pressure lever, and the other end of the inhaul cable is connected with the top of the steel bridge tower to be rotated; one end of the over-rotation preventing component is connected with the main girder bridge, and the other end of the over-rotation preventing component is connected with the steel bridge tower to be rotated, so that the over-rotation phenomenon possibly generated in the vertical rotation process of the steel bridge tower to be rotated is prevented. The rear anchor piers of the utility model are arranged on both sides of the girder bridge, and the number of the transverse bridge is two, so that the bridge deck arranged on the girder bridge is prevented from being damaged; a back rope is arranged between the steel bridge tower to be rotated and the main girder bridge, so that the phenomenon of over rotation possibly existing in the vertical rotation process of the steel bridge tower to be rotated is prevented.

Description

Steel bridge tower erects commentaries on classics auxiliary structure

Technical Field

The utility model relates to a bridge construction technical field, concretely relates to steel bridge tower erects commentaries on classics auxiliary structure.

Background

At present, the installation of a large-scale steel structure bridge tower mainly comprises a segmental assembling method and a turning construction method, segmental assembling construction is adopted, various special machines are not needed, the temporary support installation amount is large, the installation height is high, the potential safety hazard is large, the welding quality cannot be well controlled, the construction period is long, uncertain factors are more, and the linear control difficulty is large. With the continuous development and progress of material technology, the large-scale steel structure bridge tower develops towards the construction direction of turning after integral hoisting or integral assembly.

In the related art, the rear anchor points are usually arranged on the girder deck, which may cause damage to the girder deck; the over-rotation phenomenon may exist in the vertical rotation process of the main tower, so that potential safety hazards are brought; the rotating structure is limited by the span, weight and area of the rotating body; the air positioning technology of the swivel system is not accurate enough.

In view of the above, it is an urgent problem in the art to overcome the above-mentioned drawbacks of the prior art.

Disclosure of Invention

The utility model aims to solve the problem that: the vertical rotation auxiliary structure of the steel bridge tower is provided, the rear anchor piers are arranged on two sides of the main girder bridge, and two anchor piers are arranged in the transverse direction, so that the bridge deck is prevented from being damaged due to arrangement on the bridge deck of the main girder bridge; a back rope is arranged between the steel bridge tower to be rotated and the main girder bridge, so that the phenomenon of over rotation possibly existing in the vertical rotation process of the steel bridge tower to be rotated is prevented.

The utility model provides a solution to the above problems: a vertical rotation auxiliary structure of a steel bridge tower comprises a main beam bridge, a vertical rotation assembly and an anti-over rotation assembly;

the vertical rotation assembly comprises a pressure rod, a traction cable, a guy cable and two rear anchor point assemblies, a hinged support is arranged on the bridge surface of the main beam bridge corresponding to the rotation position of the steel bridge tower to be rotated, and one end of the pressure rod is hinged with the hinged support; the two rear anchor point assemblies are arranged on two sides of the lower end of the bridge deck of the main beam bridge, one end of the traction cable is connected with the rear anchor point assemblies, and the other end of the traction cable is connected with the upper part of the compression bar; one end of the inhaul cable is connected with the upper part of the pressure lever, and the other end of the inhaul cable is connected with the top of the steel bridge tower to be rotated;

one end of the over-rotation preventing assembly is connected with the main beam bridge, and the other end of the over-rotation preventing assembly is connected with the steel bridge tower to be rotated, so that the over-rotation phenomenon possibly generated in the vertical rotation process of the steel bridge tower to be rotated is prevented.

Preferably, the rear anchor point component comprises a rear anchor pier, a first anchor beam, a rear anchor seat, a first pin shaft and a plurality of through continuous jacks, the rear anchor seat is arranged on the upper end surface of the rear anchor pier, the first anchor beam is rotatably mounted on the rear anchor seat through the first pin shaft, and the traction cable penetrates through the first anchor beam and then is connected with the through continuous jacks.

Preferably, the number of the through continuous jacks is 4.

Preferably, the upper end of the pressure lever is provided with a rotating hinge assembly.

Preferably, the rotating hinge assembly comprises a rotating hinge base, two anchor beams II and two pin shafts II, and the two anchor beams II are rotatably arranged on the rotating hinge base through the pin shafts II.

Preferably, one end of the traction cable, which is far away from the rear anchor point assembly, is connected with one of the two anchor beams II, and one end of the traction cable, which is far away from the steel bridge tower to be rotated, is connected with the other of the two anchor beams II.

Preferably, the anti-over-rotation component comprises a back cable and two fixing pieces, the two fixing pieces are respectively installed on the upper end face of the main beam bridge and the steel bridge tower to be rotated, and two ends of the back cable are respectively connected with the two fixing pieces.

Preferably, the mounting includes back cable otic placode and fixing base, back cable otic placode articulates on the fixing base, the back cable both ends are connected with back cable otic placode.

Preferably, a front anchor seat is arranged on the steel bridge tower to be rotated, a third anchor beam is hinged to the front anchor seat through a third pin shaft, and one end, far away from the pressure rod, of the inhaul cable is connected with the third anchor beam.

Compared with the prior art, the utility model has the advantages that: the rear anchor piers of the utility model are arranged on both sides of the girder bridge, and the number of the transverse bridge is two, so that the bridge deck arranged on the girder bridge is prevented from being damaged; a back rope is arranged between the steel bridge tower to be rotated and the main girder bridge, so that the possible over-rotation phenomenon in the vertical rotation process of the steel bridge tower to be rotated is prevented; the vertical rotation lifting equipment has the advantages of light weight, small volume, good maneuverability and particularly convenient installation, disassembly and transportation; the main operation of the vertical rotation lifting operation is carried out on the ground, the high-altitude operation amount is less, the mechanical operation is facilitated, and the assembling error of the steel bridge tower is smaller, the welding quality is better, and the detection precision is higher; the absolute time of vertical rotation lifting and hoisting operation is short, and the installation period of the steel arch tower can be better ensured; the assembling, welding, spraying of the antirust paint and the like of the steel bridge tower structure are mainly carried out on the ground, the construction efficiency is high, the operation of workers is simple, safe and convenient, and the engineering quality can be guaranteed; the vertical rotation lifting integral hoisting steel bridge tower and other large-scale components has scientific and reasonable technology, and the safety of hoisting operation can be well guaranteed.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1;

FIG. 4 is an enlarged schematic view of the structure at C in FIG. 1;

fig. 5 is an enlarged schematic view of the structure at D in fig. 1.

The attached drawings are marked as follows: 1. the main beam bridge comprises a main beam bridge body 2, a traction cable 3, a pressure lever 4, a steel bridge tower to be rotated 5, a back cable 6, an anchor pier 7, a rear anchor seat 8, a first anchor beam 9, a first pin shaft 10, a second anchor beam 11, a second pin shaft 12, a rotating hinge seat 13, a cable 14, a third anchor beam 15, a third pin shaft 16, a front anchor seat 17, a fixed seat 18, a back cable lug plate 19 and a hinge seat.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

In the description of the present invention, it should be noted that, for the terms of orientation, there are terms such as "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicating the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if any, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of that feature, and as used in the description of the invention, "a plurality" means two or more unless otherwise explicitly specified.

In the present invention, unless otherwise explicitly defined or limited, the terms "assembled", "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in the description of the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The concrete embodiment of the utility model is shown in the attached drawings, a vertical rotation auxiliary structure of a steel bridge tower comprises a main girder bridge 1, a vertical rotation component and an over-rotation preventing component;

the vertical rotation assembly comprises a pressure lever 3, a traction cable 2, a guy cable 13 and two rear anchor point assemblies, a hinged support 19 is arranged on the bridge surface of the main beam bridge 1 corresponding to the rotation position of the steel bridge tower 4 to be rotated, and one end of the pressure lever 3 is hinged with the hinged support 19; the two rear anchor point assemblies are arranged on two sides of the lower end of the bridge deck of the main beam bridge 1, one end of the traction cable 2 is connected with the rear anchor point assemblies, and the other end of the traction cable is connected with the upper part of the compression bar 3; one end of the inhaul cable 13 is connected with the upper part of the pressure lever 3, and the other end of the inhaul cable is connected with the top of the steel bridge tower 4 to be rotated;

prevent that the one end of commentaries on classics subassembly is connected with girder bridge 1, the other end with treat to change steel bridge tower 4 and be connected for prevent to treat 4 vertical rotation in-process of commentaries on classics steel bridge tower and probably produce the phenomenon of turning over.

As a further improvement of the implementation, the rear anchor point component comprises a rear anchor pier 6, a first anchor beam 8, a rear anchor seat 7, a first pin shaft 9 and a plurality of through continuous jacks, the rear anchor seat 7 is arranged on the upper end face of the rear anchor pier 6, the first anchor beam 8 is rotatably installed on the rear anchor seat 7 through the first pin shaft 9, and the traction cable 2 penetrates through the first anchor beam 8 and then is connected with the through continuous jacks.

Wherein, the rear anchor pier adopts a drilled pile and a bearing platform foundation.

As a further improvement of this implementation, the continuous jack of the feed-through type has 4.

As a further improvement of this embodiment, a hinge assembly is mounted to the upper end of the strut 3.

As a further improvement of the implementation, the rotary hinge assembly comprises a rotary hinge seat 12, two anchor beams 10 and two pin shafts 11, wherein the two anchor beams 10 are rotatably mounted on the rotary hinge seat 12 through the pin shafts 11.

As a further improvement of the implementation, one end of the traction cable 2 far away from the rear anchor point assembly is connected with one of the two anchor beams II 10, and one end of the traction cable 13 far away from the steel bridge tower 4 to be rotated is connected with the other of the two anchor beams II 10.

As a further improvement of the implementation, the over-rotation preventing assembly comprises a back cable 5 and two fixing pieces, the two fixing pieces are respectively installed on the upper end face of the main beam bridge 1 and the steel bridge tower 4 to be rotated, and two ends of the back cable 5 are respectively connected with the two fixing pieces.

Further, the fixing part comprises a back cable ear plate 18 and a fixing seat 17, the back cable ear plate 18 is hinged on the fixing seat 17, and two ends of the back cable 5 are connected with the back cable ear plate 18.

As a further improvement of the implementation, a front anchor seat 16 is arranged on the steel bridge tower 4 to be rotated, an anchor beam III 14 is hinged to the front anchor seat 16 through a pin shaft III 15, and one end, far away from the pressure rod 3, of the inhaul cable 13 is connected with the anchor beam III 14.

The front anchor seat is arranged at the top of the steel bridge tower to be rotated, and the lifting capacity requirement of lifting equipment and the deformation control requirement of the tower body in the lifting process need to be considered at specific positions.

The concrete process of the vertical rotation construction of the steel bridge tower to be rotated is explained as follows:

the concrete process of the steel bridge tower bridge deck assembling and vertical rotation construction comprises the following steps: the method comprises the following steps of manufacturing steel bridge tower segments in a factory, and performing pre-assembly → installation of a horizontally assembled jig frame → field assembly of the steel bridge tower → installation of a vertical rotation auxiliary structure → installation of lifting equipment → vertical rotation test → formal vertical rotation → dismantling of a temporary rotation structure.

The utility model discloses the concrete implementation step does:

the method comprises the following steps: cleaning the bridge deck after the bridge approach section steel box girder is assembled; the bridge floor is gone up to car loop wheel machine or crawler crane, hoists the support that crouches and pieces together of steel bridge tower, guarantees the segment level.

Step two: each section of the steel bridge tower is lowered to the designed position by a crane, in order to ensure that the line type of the steel bridge tower to be rotated is ensured, the section of the steel bridge tower to be rotated is adjusted by a vertical jack, after the section is adjusted in place, each section is temporarily connected by temporary measures, and after the section is measured without errors, the welding between the sections is carried out.

Step three: and a rear anchor seat is arranged in the rear anchor pier, a front anchor seat is arranged on the steel tower, a fixed seat and a back cable lug plate are arranged at the designed position of the bridge deck, a hinged seat and a temporary pressure lever support are arranged at the designed position of the steel beam, and the pressure lever structure is integrally hoisted by using a crane. And a traction cable, a pull cable and a back cable are respectively installed.

Step four: 4 200t of penetrating continuous jacks are installed at the rear end of the rear anchor seat, eight continuous jacks are added to the upstream and downstream of the full bridge, the continuous jacks are utilized to pre-tension the traction cable, the traction cable and the inhaul cable are tensioned to form a stable triangular structure, the compression bar assembly support is disassembled, and meanwhile, the performance of the continuous jacks and the performance of a control system are primarily tested.

Step five: paying attention to weather conditions, preparing various preparation works before trial vertical rotation, selecting windless (or wind speed less than four levels) weather for trial vertical rotation, loading step by utilizing 200t continuous jacks, keeping synchronization, gradually tensioning the traction cable until the difference value of the pretension between the jacks cannot exceed 10t, and tensioning the traction cable; and (4) gradually loading by using a 200t continuous jack, keeping synchronization, and lifting the steel tower to be rotated to 200mm away from the horizontally spliced support. After the swivel structure is kept still for 24 hours, observing the influence of different air temperatures on the swivel structure all day long; observing the stress and deformation of a rear anchor pier, a rear anchor seat, a traction cable, a 200t continuous jack, a control system, a pressure lever, a rotary hinge assembly, a steel bridge tower to be rotated, a stay cable, various anchor beams and a front anchor seat of the swivel structure, and testing the stress performance of the 200t continuous jack and the swivel structure.

Step six: starting formal vertical rotation of the steel bridge tower to be rotated until the steel bridge tower to be rotated is vertically rotated to a designed position; and measuring the perpendicularity of the steel bridge tower to be rotated, and adjusting the perpendicularity of the steel bridge tower to be rotated if necessary to ensure that the steel bridge tower to be rotated is consistent with the designed line shape. And (3) gradually tensioning the traction cable by using a continuous jack to vertically rotate the steel bridge tower to be rotated, simultaneously detecting and monitoring each structure, vertically rotating the steel bridge tower to be rotated by 90 degrees, and rotating the steel bridge tower to be rotated in place. And (5) dismantling various temporary rotating structures in batches to complete the vertical rotation operation of the steel bridge tower to be rotated.

The utility model discloses reduce the high altitude construction volume when helping the construction of steel bridge tower, promote the precision of turning, prevent to cross the commentaries on classics, promote construction safety nature, especially easy and simple to handle, the efficiency of construction is high, save the time limit for a project.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.

Claims

1. The utility model provides a steel bridge tower erects changes auxiliary structure, includes girder bridge (1), its characterized in that: the device also comprises a vertical rotation component and an anti-over-rotation component;

the vertical rotation assembly comprises a compression bar (3), a traction cable (2), a pull cable (13) and two rear anchor point assemblies, a hinged support (19) is arranged on the bridge surface of the main beam bridge (1) corresponding to the rotation position of the steel bridge tower (4) to be rotated, and one end of the compression bar (3) is hinged with the hinged support (19); the two rear anchor point assemblies are arranged on two sides of the lower end of the bridge floor of the main beam bridge (1), one end of the traction cable (2) is connected with the rear anchor point assemblies, and the other end of the traction cable is connected with the upper part of the pressure lever (3); one end of the inhaul cable (13) is connected with the upper part of the pressure lever (3), and the other end of the inhaul cable is connected with the top of the steel bridge tower (4) to be rotated;

prevent that the one end of commentaries on classics subassembly is connected with girder bridge (1), the other end with wait to change steel bridge tower (4) and be connected for prevent waiting to change the phenomenon of excessively changeing that steel bridge tower (4) erects to change the in-process probably to produce.

2. The vertical rotation auxiliary structure of the steel bridge tower according to claim 1, characterized in that: the rear anchor point component comprises a rear anchor pier (6), a first anchor beam (8), a rear anchor seat (7), a first pin shaft (9) and a plurality of through continuous jacks, the rear anchor seat (7) is arranged on the upper end surface of the rear anchor pier (6), the first anchor beam (8) is rotatably mounted on the rear anchor seat (7) through the first pin shaft (9), and the traction cable (2) penetrates through the first anchor beam (8) and then is connected with the through continuous jacks.

3. The vertical rotation auxiliary structure of the steel bridge tower according to claim 2, characterized in that: the number of the through type continuous jacks is 4.

4. The vertical rotation auxiliary structure of the steel bridge tower according to claim 1, characterized in that: and a rotating hinge assembly is arranged at the upper end of the pressure lever (3).

5. The vertical rotation auxiliary structure of the steel bridge tower according to claim 4, wherein: the rotary hinge assembly comprises a rotary hinge base (12), two anchor beams II (10) and two pin shafts II (11), and the two anchor beams II (10) are rotatably arranged on the rotary hinge base (12) through the pin shafts II (11).

6. The vertical rotation auxiliary structure of the steel bridge tower according to claim 5, wherein: one end of the traction cable (2) far away from the rear anchor point assembly is connected with one of the two anchor beams II (10), and one end of the traction cable (13) far away from the steel bridge tower (4) to be rotated is connected with the other of the two anchor beams II (10).

7. The vertical rotation auxiliary structure of the steel bridge tower according to claim 1, characterized in that: the anti-over-rotation component comprises a back cable (5) and two fixing pieces, the two fixing pieces are respectively installed on the upper end face of the main beam bridge (1) and the steel bridge tower (4) to be rotated, and two ends of the back cable (5) are respectively connected with the two fixing pieces.

8. The vertical rotation auxiliary structure of the steel bridge tower according to claim 7, wherein: the fixing piece comprises a back cable ear plate (18) and a fixing seat (17), the back cable ear plate (18) is hinged to the fixing seat (17), and two ends of the back cable (5) are connected with the back cable ear plate (18).

9. The vertical rotation auxiliary structure of the steel bridge tower according to claim 1, characterized in that: a front anchor seat (16) is arranged on the steel bridge tower (4) to be rotated, a third anchor beam (14) is hinged to the front anchor seat (16) through a third pin shaft (15), and one end, far away from the compression bar (3), of the inhaul cable (13) is connected with the third anchor beam (14).