CN210766418U - Prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine - Google Patents
Prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine Download PDFInfo
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- CN210766418U CN210766418U CN201921316923.2U CN201921316923U CN210766418U CN 210766418 U CN210766418 U CN 210766418U CN 201921316923 U CN201921316923 U CN 201921316923U CN 210766418 U CN210766418 U CN 210766418U
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Abstract
The utility model discloses a many strides of prefabricated assembled bridge erect bridge crane of synchronous installation, include: a main beam; the rear main crown block, the middle main crown block and the front main crown block can hoist heavy components; rear legs supported on the deck; a first center leg and a second center leg secured to the support structure; a first front leg and a second front leg supported on the pier body corbel or the bearing platform. The utility model discloses a supporting structure concreties, the matching construction of pier shaft installation and festival section roof beam installation.
Description
Technical Field
The utility model relates to a bridge engineering technical field. More specifically, the utility model relates to a prefabricated assembled bridge multispan synchronous mounting frame bridge crane.
Background
Because most sections of the mechanical loading project are in hills and water source protection areas, the prefabricated parts and the feeding beams under the bridge can not be transported under the bridge, and the problems can be better solved only by feeding the beams at the tail part of the bridge girder erection machine in a bridge deck transportation mode.
The problems of transportation and beam feeding can be solved well by installing the prefabricated pier body and the segment beam through a common integrated bridge, but the installation of the pier body and the pier top block are not matched with the installation effect of the segment beam when the conventional prefabricated assembly type bridge multi-span synchronous installation frame bridge crane is erected, and the prefabricated pier body, the pier top block or the capping beam, the segment beam and the like are not suitable for installation, so that the problem of nest work of the segment beam installation can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a many synchronous installations of prefabricated assembled bridge girder erection machine has realized the matching construction of bearing structure consolidation, pier shaft installation and festival section roof beam installation.
In order to achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine, comprising:
a main beam;
the rear main crown block, the middle main crown block and the front main crown block can hoist heavy components;
rear legs supported on the deck;
a first center leg and a second center leg secured to the support structure;
a first front leg and a second front leg supported on the pier body corbel or the bearing platform.
Preferably, the method further comprises the following steps: a rear small crown block and a front small crown block.
Preferably, the main beam is a truss or a box-section structure.
Preferably, the second front leg is foldable.
Preferably, the second front supporting leg is driven by a driving device to move on the main beam, and the driving device comprises:
the sliding chutes are oppositely arranged on two side surfaces of the lower end of the main beam;
the pair of screw rods are fixed in the pair of sliding grooves and are driven to rotate by the motor; and the number of the first and second groups,
a pair of ball nuts respectively arranged on the pair of screw rods;
the second front supporting leg is detachably connected with the ball nut through a bolt.
The utility model discloses at least, include following beneficial effect: the pier body installation and the pier top block construction are separated, and the problem of unmatched efficacy is further broken through. The prefabricated and installed integrated construction of the pier body, the pier top block or the capping beam and the segmental beam is realized, the bridge construction assembly rate is greatly improved, and compared with the traditional cast-in-place process, the cast-in-place construction process has the advantages of higher efficiency, more optimized environment and greatly improved labor working environment of workers. The method is suitable for bridge construction with span of 30-70m, and the construction efficiency can reach 8 days per span.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the erection of a prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine;
FIG. 2 is a schematic view of a girder transporting vehicle for transporting prefabricated parts (including pier bodies, segmental girders and the like);
FIG. 3 is a schematic view of a left pier body of a front main crown block and a middle main crown block lifting and transporting N4;
FIG. 4 is a schematic view of the N4 pier after installation;
FIG. 5 is a schematic illustration of the middle main crown block and the rear main crown block transport phase beams;
FIG. 6 is a schematic illustration of the second center leg hoist moved onto the N3 pier top block;
FIG. 7 is a schematic view of the second front leg advancing onto the N4 bolster;
FIG. 8 is a schematic view of the prefabricated assembled bridge multi-span synchronous mounting frame bridge crane after spanning towards the bridge erecting direction;
FIG. 9 is a schematic view of the first front leg advancing and the second front leg collapsing;
fig. 10 is a schematic view of the second front leg advancing.
1 girder, 2 back little overhead traveling cranes, 3 front little overhead traveling cranes, 4 back main overhead traveling cranes, 5 middle main overhead traveling cranes, 6 front main overhead traveling cranes, 7 back supporting legs, 8 first middle supporting legs, 9 second middle supporting legs, 10 first front supporting legs, 11 second front supporting legs, 12N 1 pier bodies, 13N 2 pier top blocks, 14N 2 section roof beams, 15 girder transporting vehicles, 16N 4 pier top blocks, 17N 5 pier bodies.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The prefabricated assembled bridge multi-span synchronous mounting frame bridge crane is suitable for erecting prefabricated pier bodies, bent caps, segmental girders or composite girders and the like.
As shown in figure 1, the utility model provides a many strides of prefabricated assembled bridge frame synchronous mounting bridge girder erection machine, include:
a main beam;
the rear main crown block, the middle main crown block and the front main crown block are used for hoisting heavy components. The main crown block is the main hoisting machinery of the bridge girder erection machine, and is a heavy component such as a hoisting beam body, a pier body, a middle supporting leg and the like.
The rear supporting leg is supported on the bridge floor and is a stressed member for supporting the bridge girder erection machine.
The first middle supporting leg and the second middle supporting leg are fixed on the supporting structure, and the middle supporting leg is a main stressed component for supporting the bridge erecting machine.
A first front leg and a second front leg supported on the platform. The front supporting leg is a stressed component for supporting the bridge girder erection machine.
In the preferred embodiment of the prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine, the rear small crown block and the front small crown block are light members for hoisting below 20t, and the prefabricated assembled bridge girder multi-span synchronous mounting bridge girder erection machine has the characteristics of flexibility, light weight and high efficiency.
In a preferred embodiment of the prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine, the main girder is a truss or box-section structure.
In a preferred embodiment of the prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine, the second front supporting leg is foldable.
In a preferred embodiment of the prefabricated assembled bridge multi-span synchronous erection bridge erecting machine of the present application, the second front supporting leg is driven to move on the main beam by a driving device, and the driving device comprises:
the sliding chutes are oppositely arranged on two side surfaces of the lower end of the main beam;
the pair of screw rods are fixed in the pair of sliding grooves and are driven to rotate by the motor; and the number of the first and second groups,
a pair of ball nuts respectively arranged on the pair of screw rods;
the second front supporting leg is detachably connected with the ball nut through a bolt.
In the technical scheme, the screw rod rotates to drive the ball nut to do linear motion on the screw rod, so that the second front supporting leg is driven to move on the main beam, the main crown block is not needed to hoist the second front supporting leg, and the lifting device is more convenient and rapid.
The utility model provides an utilize prefabricated assembly type bridge multi-span to install mounting bridge crane's installation method in step, along bridge erection direction, during initial operating mode: the installation of the N1 pier body, the N1 pier top block and the N1 section segmental beam is finished, the installation of the N2 pier body, the N2 pier top block and the installation of the N3 pier body are finished, and the method comprises the following steps:
step one, as shown in fig. 3-4, lifting and transporting a pier body at the left side of N4 by a front main crown block and a middle main crown block, and temporarily storing the pier bodies between N3-N4 spans; and after the right N4 pier body is transported to the N3-N4 span, the rear main crown block is provided with an N3 pier top block, and the front main crown block and the rear main crown block are sequentially provided with the right N4 pier body and the left N4 pier body.
And step two, as shown in fig. 5, after the middle main overhead traveling crane is installed with the N4 pier body, installing N2 segmental girders by matching with the rear main overhead traveling crane, and then grouting and equal-strength N4 pier body, and constructing an N3 supporting structure (secondary pouring construction of pier top blocks including segmental girder pier girder consolidation, namely steel bar binding, mold closing, concrete pouring and equal strength, or prefabricated capping beam installation, or cast-in-situ capping beam construction, and the like).
Step three, the prefabricated assembly type bridge multi-span synchronous mounting frame bridge machine strides towards the bridge erection direction;
step four, comprising:
step 41, as shown in fig. 9, the first front supporting leg moves forward and is supported on an N5 supporting platform;
step 42, closing the wet joint construction by N1 and N2;
step five, comprising:
step 51, as shown in fig. 10, the second front leg is folded, the second front leg moves forwards, crosses the N4 pier body, and then is put down to be supported on the N4 bearing platform;
52, carrying out next round of construction, installing an N4 pier top block and an N5 pier body, and meanwhile, penetrating a NI and N2 closure wet joint into a prestressed tendon, and tensioning with equal strength;
the installation method for synchronously installing the bridge girder erection machine by utilizing the prefabricated assembled bridge girder has the main core principle that the bridge girder erection machine is provided with 3.5 spans, the prefabricated pier body installation, the supporting structure construction and the segmental girder assembling construction (or structural forms such as a superposed girder and a combined girder) are separated, all processes are in flow construction, and the efficiency is greatly improved.
In a preferred embodiment of the installation method of the bridge girder erection machine by using the prefabricated assembled bridge multi-span synchronous installation, the driving device is adopted when the second front supporting leg moves forwards. The scheme solves the problems that the stress and deformation of the beam are large and the requirements on strength and rigidity are high due to the fact that the N3-N5 span a simple span of about 100 meters in the working condition, and the second front supporting leg does not need to be hoisted by a main crown block in the moving process through the driving device, so that the load is greatly reduced.
In a preferred embodiment of the installation method of the bridge girder erection machine using the prefabricated assembly type bridge multi-span synchronous installation, as shown in fig. 2, in the first step, the pier body and the supporting structure are transported by using a girder transporting vehicle, and the bridge lower feeding beam or the tail feeding beam is used.
In a preferred embodiment of the installation method of the present application, which utilizes the prefabricated assembled bridge multi-span synchronous installation bridge girder erection machine, the supporting structure is a capping beam or a pier top block or other alternative structures, but is not limited to these two structures.
In a preferred embodiment of the installation method of the bridge girder erection machine using prefabricated assembled bridge multi-span synchronous installation, the third step includes:
step 31, as shown in fig. 6, hoisting and moving the second middle support leg to an N3 pier top block;
step 32, as shown in fig. 7, the second front supporting leg is moved forward to the N4 supporting platform and is temporarily connected with the first front supporting leg;
step 33, as shown in FIG. 8, the main beam and rear legs are moved forward across the span.
In a preferred embodiment of the construction method for installing the prefabricated bridge by using the prefabricated assembled bridge multi-span synchronous installation bridge girder erection machine, in the fifth step, the method further includes:
and step 53, after the NI and N2 closure tensioning is finished, the NI-N2 section has a beam transportation condition, and the next cycle construction is carried out.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (5)
1. The utility model provides a prefabricated assembled bridge multispan synchronous mounting bridging machine which characterized in that includes:
a main beam;
the rear main crown block, the middle main crown block and the front main crown block can hoist heavy components;
rear legs supported on the deck;
a first center leg and a second center leg secured to the support structure;
a first front leg and a second front leg supported on the pier body corbel or the bearing platform.
2. The prefabricated assembled bridge multi-span synchronous installation bridge girder erection machine of claim 1, further comprising: a rear small crown block and a front small crown block.
3. The prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine according to claim 1, wherein the main girder is a truss or a box-section structure.
4. A prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine as claimed in any one of claims 1 to 3, wherein the second front leg is foldable.
5. The prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine of claim 4, wherein the second front supporting leg is driven to move on the main girder by a driving device, and the driving device comprises:
the sliding chutes are oppositely arranged on two side surfaces of the lower end of the main beam;
the pair of screw rods are fixed in the pair of sliding grooves and are driven to rotate by the motor; and the number of the first and second groups,
a pair of ball nuts respectively arranged on the pair of screw rods;
the second front supporting leg is detachably connected with the ball nut through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921316923.2U CN210766418U (en) | 2019-08-14 | 2019-08-14 | Prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine |
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| CN201921316923.2U CN210766418U (en) | 2019-08-14 | 2019-08-14 | Prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499708A (en) * | 2019-08-14 | 2019-11-26 | 中交第二航务工程局有限公司 | A kind of prefabricated assembled bridge multispan synchronous mounting rack bridge machine and its installation method |
| CN112962459A (en) * | 2021-02-05 | 2021-06-15 | 武汉通联路桥机械技术有限公司 | Integrated bridge girder erection machine for piling, pier mounting and girder erection and bridge construction method |
-
2019
- 2019-08-14 CN CN201921316923.2U patent/CN210766418U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499708A (en) * | 2019-08-14 | 2019-11-26 | 中交第二航务工程局有限公司 | A kind of prefabricated assembled bridge multispan synchronous mounting rack bridge machine and its installation method |
| CN110499708B (en) * | 2019-08-14 | 2024-07-05 | 中交第二航务工程局有限公司 | Bridge girder erection machine for synchronously installing prefabricated bridge Liang Duokua and installation method thereof |
| CN112962459A (en) * | 2021-02-05 | 2021-06-15 | 武汉通联路桥机械技术有限公司 | Integrated bridge girder erection machine for piling, pier mounting and girder erection and bridge construction method |
| CN112962459B (en) * | 2021-02-05 | 2022-12-09 | 武汉通联路桥机械技术有限公司 | Integrated bridge girder erection machine for piling, pier mounting and girder erection and bridge construction method |
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