CN211256692U - Transport beam structure of newly-built upper bridge on current bridge - Google Patents
Transport beam structure of newly-built upper bridge on current bridge Download PDFInfo
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- CN211256692U CN211256692U CN201921896222.0U CN201921896222U CN211256692U CN 211256692 U CN211256692 U CN 211256692U CN 201921896222 U CN201921896222 U CN 201921896222U CN 211256692 U CN211256692 U CN 211256692U
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Abstract
The utility model discloses a beam conveying structure for newly building an upper layer bridge on the existing bridge, which comprises a track mechanism laid on a lower layer bridge floor and a plurality of beam conveying trolleys arranged on the track mechanism; the lower deck comprises a left deck and a right deck which are used for vehicles to run oppositely, the track mechanism comprises a first track mechanism, a second track mechanism and a third track mechanism, the first track mechanism, the second track mechanism and the third track mechanism are paved on the left deck, and the fourth track mechanism is paved on the right deck; two beam conveying trolleys are respectively arranged on each track mechanism at intervals in the front-back direction, and pushing devices used for supporting the transported box girder segments are respectively arranged on the beam conveying trolleys of each track mechanism. The utility model also discloses a fortune roof beam method of utilizing current bridge. The utility model discloses a two width of cloth bridge bearing, utilize track mechanism to improve the bearing capacity of current bridge along longitudinal bridge to technical means such as distribution with the weight of case roof beam festival section, provide sufficient space of transporting for transporting the overweight case roof beam festival section of overlength, improved fortune roof beam efficiency greatly under the prerequisite of ensureing safety.
Description
Technical Field
The utility model relates to a bridge construction technical field.
Background
In modern society, bridges play an increasingly important role, and not only need to be bridged to pass through places such as crossing water areas (rivers and the like) and ditches in the prior art, but also play an important role in three-dimensional traffic in cities.
With the development of cities and the improvement of the living standard of people, the number of motor vehicles in China is rapidly increased year by year, which brings more and more pressure to traffic, and the traffic capacity of the existing single-layer bridge cannot meet the traffic demand of people in some occasions with large traffic flow. In order to ensure smooth traffic, a new bridge needs to be erected above the existing bridge so as to increase traffic capacity.
Building a new bridge above an existing bridge is a new problem, and the box girder segments of the new bridge on the upper layer need to be transported to a building place during construction. The passing standard of bridge bearing is that the axle load cannot exceed 50 tons, box girder segments of large bridges are usually overlong and overweight, if a carrier vehicle is used on the existing lower-layer bridge to transport the upper-layer box girder segments, only small box girder segments can be transported, and for the box girder segments with the single box girder segments being more than 100 tons, the axle load cannot exceed 100 tons. When the box girder segment is larger than 200 tons, the axle load can not be guaranteed to exceed 100 tons.
The bridge usually has two-way to the lane that opens, and the bridge is equipped with two, namely left bridge and right bridge, and the lane of a direction is on same bridge. The existing carrier loader can only run on the same bridge.
For a larger box girder segment (generally, a large bridge is used in occasions where double-layer or multi-layer bridges need to be built, and the box girder segment is longer and heavier), a carrier vehicle cannot be used for transporting on the existing bridge at the lower layer in the prior art, only a method of erecting a support can be used for transporting the box girder segment, the support needs to be erected below and above the existing bridge, otherwise, the existing bridge is collapsed, so that the beam transporting efficiency is greatly reduced, and the construction cost is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a need not set up the support, can utilize current bridge to transport the fortune girder construction of new bridge case girder segment section, fortune roof beam is efficient.
In order to achieve the purpose, the utility model provides a beam transporting structure for newly building an upper layer bridge on the existing bridge, the existing bridge is a lower layer bridge, the length direction of the lower layer bridge is the front-back direction, and the beam transporting direction is the front direction, and the beam transporting structure comprises a track mechanism laid on the lower layer bridge floor and a plurality of beam transporting trolleys arranged on the track mechanism;
the lower layer bridge deck comprises a left amplitude bridge deck and a right amplitude bridge deck which are used for vehicles to oppositely run, and an isolation belt is arranged between the left amplitude bridge deck and the right amplitude bridge deck;
the track mechanism comprises a first track mechanism, a second track mechanism, a third track mechanism and a fourth track mechanism, the first track mechanism and the second track mechanism are laid on the left bridge deck along the front-back direction, and the third track mechanism and the fourth track mechanism are laid on the right bridge deck along the front-back direction;
two beam transporting trolleys are respectively arranged on each track mechanism at intervals from front to back, and the front and back positions of the beam transporting trolleys on each track mechanism are consistent; and pushing devices for supporting the transported box girder sections are respectively arranged on the beam transporting trolleys of each track mechanism.
The first track mechanism and the second track mechanism form a left bridge deck track mechanism, the third track mechanism and the fourth track mechanism form a right bridge deck track mechanism, and the left bridge deck track mechanism and the right bridge deck track mechanism are symmetrically arranged around the isolation belt.
The pushing device is provided with a pushing rod capable of stretching up and down, and the top of the pushing rod is hinged with a supporting plate for supporting the transported box girder segment.
The pushing device is an electric push rod or a hydraulic mechanism.
The first to fourth track mechanisms have the same structure and respectively comprise a left track mechanism and a right track mechanism;
the left rail mechanism and the right rail mechanism are identical in structure and respectively comprise a concrete foundation laid on the lower deck along the front-back direction, and a supporting track is fixedly connected to the top of the concrete foundation upwards in the middle of the left-right direction; the support track is used for supporting the beam transporting trolley.
The beam transporting trolley comprises a horizontally arranged frame, walking wheels are mounted at four corners of the frame through wheel shafts respectively, and an electric motor is arranged on the frame and is in transmission connection with the walking wheels through a transmission mechanism.
The motor is a variable-frequency speed reducing motor, and each beam conveying trolley is provided with a first wireless communication module; a movable electric control device is arranged on the lower layer bridge and is connected with a storage battery and a second wireless communication module;
the variable-frequency speed reducing motor and the pushing device are both connected with the first wireless communication module, and the first wireless communication module is connected with the electric control device through the second wireless communication module.
The utility model discloses have following advantage:
the utility model discloses set up track mechanism on left side width of cloth bridge floor and right side width of cloth bridge floor respectively, when transporting the box girder segment section, the weight of box girder segment section distributes the weight of box girder segment section simultaneously to left side width of cloth bridge floor and right side width of cloth bridge floor through the fortune roof beam dolly on first to fourth track mechanism, left side width of cloth bridge floor and right side width of cloth bridge floor are bearing simultaneously, the ability that current bridge transported the box girder segment section has just doubly improved, the weight of the box girder segment section that actually bears under the condition of same axle load can double, transport overweight box girder segment section for current bridge and provide the basis.
Second, the utility model discloses a first to fourth track mechanism, the weight transmission mode change that wheel and bridge floor point contacted in the past is the weight transmission mode of track (specifically concrete foundation) and bridge floor line contact. The bridge axle load indicates the bearing of bridge on the cross section of a bridge on the cross bridge direction, the utility model discloses a mode of track bearing, when transporting the box girder segment section of same weight, with the weight of box girder segment section through each track mechanism dispersion to each department of bridge of longitudinal bridge to (bridge length direction), the bridge axle load (the weight that bears on the bridge cross section) has greatly been reduced, with the characteristics of the bridge floor of a left side and the bridge floor of a right side simultaneously bearing together for current bridge becomes to transport overweight box girder segment section by transporting overweight box girder segment section in the past, guarantees that current bridge is not crushed by the pressure, collapses.
Three, the utility model discloses a box girder segment section is transported simultaneously to double width of cloth bridge (left side width of cloth bridge floor and right side width of cloth bridge floor), consequently makes the length of the box girder segment section that can transport (the width of new bridge promptly) compare single width of cloth bridge and transport and realize doubling, with double width of cloth bridge + track dispersion axle load together, realizes transporting the overweight box girder segment section of overlength on current bridge.
And fourthly, the left bridge deck track mechanism and the right bridge deck track mechanism are symmetrically arranged about the isolation belt, so that the weight of the transported box girder segments can be more uniformly distributed on the left bridge deck and the right bridge deck.
And fifthly, the total height of the pushing devices of the girder transporting trolleys can be flexibly adjusted by arranging the pushing rods, so that on one hand, the height between the conveyed box girder segments and the ground can be adjusted, the box girder segments in conveying can be guaranteed to avoid bridge deck facilities, and on the other hand, the pushing devices of the girder transporting trolleys can be guaranteed to be in good contact with the box girder segments, so that the pushing devices of the girder transporting trolleys can play a good supporting role. Because the bottom surface of box girder segment probably is not absolute level, consequently hoist the box girder segment back to each fortune roof beam dolly, each backup pad can carry out the adaptability according to the condition of the bottom surface of the box girder segment that it contacted and rotate, guarantees that backup pad and box girder segment contact well, avoids backup pad and box girder segment bottom surface to have the contained angle and damages backup pad or box girder segment bottom surface.
Sixthly, compared with the mode that the track is directly laid on the bridge floor, the arrangement of the concrete foundation can further reduce the pressure applied to the bridge floor. The motor is in transmission connection with each walking wheel through a transmission mechanism, and each walking wheel is a driving wheel, so that the beam transporting trolley has better transporting capacity. The electric control device controls the states of the beam transporting trolleys in a wireless communication mode, so that the defect of complicated cables caused by wired connection is overcome, and all the beam transporting trolleys can be controlled to run in a coordinated mode.
Adopt the utility model discloses a fortune roof beam method, after each track mechanism has been built, can come and go the operation through controlling each fortune roof beam dolly, conveniently realize transporting the overweight case roof beam segment of overlength on current bridge, guarantee to current bridge, the phenomenon that axle load breakthrough 50 tons (the ascending section bearing of bridge horizontal bridge is no longer than 50 tons) can not appear in the transportation process, break through the limitation that current bridge can't transport the overweight case roof beam segment of overlength among the prior art (otherwise the axle load surpasss and current bridge can be damaged or even collapses after 50 tons), greatly improve fortune roof beam efficiency, the high efficiency of building bridge engineering on the guarantee bridge goes on.
The utility model discloses a two width of cloth bridge bearing, utilize track mechanism with the weight of case roof beam segment along the longitudinal bridge to technical means such as distribution, improved the bearing capacity of current bridge greatly, for transporting the overweight case roof beam segment of overlength and providing sufficient space and bearing capacity of transporting, guarantee that the axle load is not transfinite, improved fortune roof beam efficiency greatly under the prerequisite of guaranteeing safety.
Drawings
Fig. 1 is a schematic top view of a beam conveying structure of a newly-built upper-layer bridge of the present invention;
fig. 2 is a schematic top view of the first to fourth rail mechanisms;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural view of the beam conveying trolley on the track mechanism;
fig. 5 is an electric control schematic diagram of the present invention.
Detailed Description
As shown in fig. 1 to 5, the present invention provides a beam transporting structure for newly building an upper bridge on an existing bridge, wherein the existing bridge is a lower bridge, the length direction of the lower bridge is the front-back direction, and the beam transporting direction is the front direction, and the beam transporting structure comprises a track mechanism laid on a lower bridge floor (the lower bridge floor is the surface of the lower bridge), and a plurality of beam transporting trolleys 1 arranged on the track mechanism, in this embodiment, 8 beam transporting trolleys 1 are provided in total;
the lower deck comprises a left amplitude deck 3 (namely a deck of a left amplitude bridge) and a right amplitude deck 4 (namely a deck of a right amplitude bridge) which are used for vehicles to oppositely run, and an isolation belt 2 is arranged between the left amplitude deck 3 and the right amplitude deck 4;
the track mechanism comprises a first track mechanism 5, a second track mechanism 6, a third track mechanism 7 and a fourth track mechanism 8, the first track mechanism 5 and the second track mechanism 6 are laid on the left bridge deck 3 along the front-back direction (namely the length direction of the lower bridge deck), and the third track mechanism 7 and the fourth track mechanism 8 are laid on the right bridge deck 4 along the front-back direction;
two beam transporting trolleys 1 are respectively arranged on each track mechanism at intervals from front to back, and the front and back positions of the beam transporting trolleys 1 on each track mechanism are consistent; the beam conveying trolleys 1 of each track mechanism are respectively provided with a pushing device 21 for supporting the conveyed box girder segments 9. The top of the pushing device 21 is higher than the isolation belt 2.
The first track mechanism 5 and the second track mechanism 6 form a left bridge deck track mechanism, the third track mechanism 7 and the fourth track mechanism 8 form a right bridge deck track mechanism, and the left bridge deck track mechanism and the right bridge deck track mechanism are symmetrically arranged around the isolation belt 2.
Left side width of cloth bridge floor track mechanism and right side width of cloth bridge floor track mechanism set up about median 2 symmetry, can make the box girder segment 9's of transportation weight distribute more evenly on left side width of cloth bridge floor 3 and right side width of cloth bridge floor 4.
The pushing device 21 has a push rod 10 capable of extending and retracting up and down, and the top of the push rod 10 is hinged with a support plate 11 for supporting the transported box girder segment 9.
The pushing device 21 is an electric push rod or a hydraulic mechanism. When the hydraulic mechanism is adopted, the hydraulic mechanism comprises a hydraulic pump station and a hydraulic cylinder, the hydraulic cylinder is connected with a control valve group (electromagnetic valve group) in the hydraulic pump station through a pipeline, an electric control device is connected with the hydraulic pump and the control valve group in the hydraulic pump station through a second wireless communication device, and the push-pull rod 10 is an extension rod of the hydraulic cylinder. When the electric push rod is adopted, the push rod 10 is an extension rod of the electric push rod. The electric push rod and the hydraulic mechanism are conventional technologies, and detailed description is omitted.
The first to fourth track mechanisms 5, 6, 7 and 8 have the same structure and respectively comprise a left track mechanism and a right track mechanism;
the left rail mechanism and the right rail mechanism are identical in structure and respectively comprise a concrete foundation 12 laid on the lower deck along the front-back direction, the cross section of the concrete foundation is rectangular, and a supporting rail 13 is fixedly connected to the top of the concrete foundation 12 upwards in the middle of the left-right direction; the support rails 13 are used for supporting the girder transport trolley 1.
The beam transporting trolley 1 comprises a horizontally arranged frame 14, walking wheels 16 are respectively arranged at four corners of the frame 14 through wheel shafts 15, a motor 17 is arranged on the frame 14, and the motor 17 is in transmission connection with the wheel shafts 15 of the walking wheels 16 through a transmission mechanism. The motor drives the travelling wheels through the transmission mechanism to be of a conventional structure, and details are not described.
The motor 17 is a variable-frequency speed reducing motor, and each beam conveying trolley 1 is provided with a first wireless communication module 18; a movable electric control device 19 is arranged on the lower layer bridge, and the electric control device 19 is connected with a storage battery 22 and a second wireless communication module 20;
the variable-frequency speed reducing motor (i.e. the motor 17) and the pushing device 21 are both connected with the first wireless communication module 18, and the first wireless communication module 18 is connected with the electric control device 19 through the second wireless communication module 20. The electric control device is preferably a PLC, and can also be in the form of an integrated circuit, a notebook computer and the like.
The first wireless communication module and the second wireless communication module can adopt a wifi module, a bluetooth module, a zigbee module and the like, and preferably adopt a zigbee module.
The utility model also discloses an utilize the fortune roof beam method of current bridge, the fortune roof beam structure of newly-built upper bridge on using above-mentioned current bridge carries out according to following step:
the first step is a preparation step, wherein the existing bridge, namely a lower-layer bridge, is closed, so that motor vehicles are prevented from being driven into the existing bridge of a construction section by mistake;
the second step is a track laying step; respectively pouring the concrete foundations 12 on the left bridge deck 3 and the right bridge deck 4 of the lower bridge deck, and installing support rails 13 on the concrete foundations 12 to form a left rail mechanism and a right rail mechanism; meanwhile, upper bridge rails which are correspondingly connected with the supporting rails 13 one by one are arranged; the upper bridge track is used for connecting the support track and the ground.
The third step is a hoisting step;
arranging each beam transporting trolley 1 on an upper bridge track, hoisting a box girder segment 9 to be transported to each beam transporting trolley 1 by using a hoisting mechanism (such as a gantry crane), and enabling a supporting plate 11 of each beam transporting trolley 1 to support the same box girder segment 9;
the fourth step is a bridge-up step; starting the variable-frequency speed reducing motors on the beam transporting trolleys 1 through the electric control device 19, driving the beam transporting trolleys 1 of the bearing box girder segment 9 to be synchronously started and run to the left rail mechanism and the right rail mechanism;
the fifth step is a beam transporting step; the worker controls each beam transporting trolley 1 to synchronously run through the electric control device 19, and the box girder segments 9 are transported to a construction position along the lower deck;
after the box girder segment 9 is hoisted by the construction machinery at the construction position, workers control each girder transporting trolley 1 to return to the upper bridge track through the electric control device 19;
the third to fifth steps are repeated, and the box girder segments 9 are continuously transported to the construction site.
The number of the beam transporting trolleys 1 is 8, 4 beam transporting trolleys 1 are arranged corresponding to the left rail mechanism, and 4 beam transporting trolleys 1 are arranged corresponding to the right rail mechanism.
In the third step, before hoisting the box girder segment 9 to be transported to each girder transporting trolley 1, a worker controls the pushing devices 21 through the electric control device 19, adjusts the up-down telescopic positions of the pushing rods 10 of each pushing device 21, and enables the supporting plates 11 of the pushing devices 21 of each girder transporting trolley 1 to be at the same horizontal position; after the box girder segments 9 to be transported are hoisted to each girder transporting trolley 1, a worker controls the pushing devices 21 through the electric control device 19, adjusts the up-down telescopic positions of the pushing rods 10 of each pushing device 21, and enables the supporting plates 11 of the pushing devices 21 of each girder transporting trolley 1 to be pressed against the box girder segments 9;
in the fourth step and the fifth step, the working frequency of the variable frequency speed reduction motor of each beam transporting trolley 1 is synchronously controlled by the staff through the electric control device 19, so that the running speed of each beam transporting trolley 1 is synchronously adjusted to a preset speed, and each beam transporting trolley 1 transports the box girder segment 9 at the same speed.
Because the bottom surface of the box girder segment 9 may not be absolutely horizontal, after the box girder segment 9 is hoisted to each girder transporting trolley 1, each supporting plate can adaptively rotate according to the condition of the bottom surface of the box girder segment 9 contacted with the supporting plate, so that the supporting plate is ensured to be in good contact with the box girder segment 9, and the phenomenon that the bottom surface of the supporting plate or the box girder segment 9 is damaged due to the included angle between the supporting plate and the bottom surface of the box girder segment 9 is avoided. At the moment, some supporting plates may not be tightly contacted with the box girder segments 9, and the up-down telescopic positions of the pushing rods of all the pushing devices are adjusted at the moment, so that the supporting plates of the pushing devices of all the girder transporting trolleys 1 are all pressed against the box girder segments 9, and the pushing devices of all the girder transporting trolleys 1 can be guaranteed to have good supporting effect.
The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
Claims (7)
1. Newly-built upper bridge's fortune roof beam structure on current bridge, current bridge are lower floor's bridge, and the length direction of following layer of bridge is the fore-and-aft direction to fortune roof beam direction is preceding, its characterized in that: the device comprises a track mechanism laid on a lower deck and a plurality of beam transporting trolleys arranged on the track mechanism;
the lower layer bridge deck comprises a left amplitude bridge deck and a right amplitude bridge deck which are used for vehicles to oppositely run, and an isolation belt is arranged between the left amplitude bridge deck and the right amplitude bridge deck;
the track mechanism comprises a first track mechanism, a second track mechanism, a third track mechanism and a fourth track mechanism, the first track mechanism and the second track mechanism are laid on the left bridge deck along the front-back direction, and the third track mechanism and the fourth track mechanism are laid on the right bridge deck along the front-back direction;
two beam transporting trolleys are respectively arranged on each track mechanism at intervals from front to back, and the front and back positions of the beam transporting trolleys on each track mechanism are consistent; and pushing devices for supporting the transported box girder sections are respectively arranged on the beam transporting trolleys of each track mechanism.
2. The beam conveying structure for newly building an upper layer bridge on an existing bridge according to claim 1, is characterized in that: the first track mechanism and the second track mechanism form a left bridge deck track mechanism, the third track mechanism and the fourth track mechanism form a right bridge deck track mechanism, and the left bridge deck track mechanism and the right bridge deck track mechanism are symmetrically arranged around the isolation belt.
3. The girder construction of newly-built upper bridges on existing bridges according to claim 1 or 2, wherein: the pushing device is provided with a pushing rod capable of stretching up and down, and the top of the pushing rod is hinged with a supporting plate for supporting the transported box girder segment.
4. The beam conveying structure for newly building an upper layer bridge on the existing bridge according to claim 3, characterized in that: the pushing device is an electric push rod or a hydraulic mechanism.
5. The beam conveying structure for newly building an upper layer bridge on the existing bridge according to claim 3, characterized in that: the first to fourth track mechanisms have the same structure and respectively comprise a left track mechanism and a right track mechanism;
the left rail mechanism and the right rail mechanism are identical in structure and respectively comprise a concrete foundation laid on the lower deck along the front-back direction, and a supporting track is fixedly connected to the top of the concrete foundation upwards in the middle of the left-right direction; the support track is used for supporting the beam transporting trolley.
6. The beam conveying structure for newly building an upper layer bridge on the existing bridge according to claim 5, is characterized in that: the beam transporting trolley comprises a horizontally arranged frame, walking wheels are mounted at four corners of the frame through wheel shafts respectively, and an electric motor is arranged on the frame and is in transmission connection with the walking wheels through a transmission mechanism.
7. The beam conveying structure for newly building an upper layer bridge on the existing bridge according to claim 6, which is characterized in that: the motor is a variable-frequency speed reducing motor, and each beam conveying trolley is provided with a first wireless communication module; a movable electric control device is arranged on the lower layer bridge and is connected with a storage battery and a second wireless communication module;
the variable-frequency speed reducing motor and the pushing device are both connected with the first wireless communication module, and the first wireless communication module is connected with the electric control device through the second wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896222.0U CN211256692U (en) | 2019-11-06 | 2019-11-06 | Transport beam structure of newly-built upper bridge on current bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896222.0U CN211256692U (en) | 2019-11-06 | 2019-11-06 | Transport beam structure of newly-built upper bridge on current bridge |
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| Publication Number | Publication Date |
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| CN211256692U true CN211256692U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921896222.0U Active CN211256692U (en) | 2019-11-06 | 2019-11-06 | Transport beam structure of newly-built upper bridge on current bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725215A (en) * | 2019-11-06 | 2020-01-24 | 郑州市市政工程总公司 | Beam transporting structure of newly-built upper-layer bridge on existing bridge and beam transporting method using existing bridge |
| CN112609586A (en) * | 2020-12-18 | 2021-04-06 | 中建三局集团有限公司 | Synchronous construction method for steel box girder self-anchoring suspension bridge tower girder |
-
2019
- 2019-11-06 CN CN201921896222.0U patent/CN211256692U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725215A (en) * | 2019-11-06 | 2020-01-24 | 郑州市市政工程总公司 | Beam transporting structure of newly-built upper-layer bridge on existing bridge and beam transporting method using existing bridge |
| CN112609586A (en) * | 2020-12-18 | 2021-04-06 | 中建三局集团有限公司 | Synchronous construction method for steel box girder self-anchoring suspension bridge tower girder |
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