CN113832870B - Construction method of rhombic hanging basket - Google Patents
Construction method of rhombic hanging basket Download PDFInfo
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- CN113832870B CN113832870B CN202111010762.6A CN202111010762A CN113832870B CN 113832870 B CN113832870 B CN 113832870B CN 202111010762 A CN202111010762 A CN 202111010762A CN 113832870 B CN113832870 B CN 113832870B
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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
- E01D21/10—Cantilevered erection
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
Abstract
The application relates to a construction method of a rhombic hanging basket, which comprises the following steps of constructing a zero concrete bridge section at the upper end of a bridge pier, arranging two groups of rails on the zero concrete bridge section, and arranging a rhombic hanging basket system on each group of rails; arranging a synchronous walking device to enable the rhombic hanging basket system to move forwards to a proper position on the track; the two hanging basket systems are respectively provided with a hanging basket template, and the zero bridge section is provided with a concrete pouring device so as to pour concrete in the two hanging basket templates and form a box girder; the two rhombic hanging basket systems are respectively moved forwards to the front end of the newly formed box girder, then the box girder is poured to form a new box girder, and the pouring is continuously repeated until the two box girders corresponding to different bridge piers are close to each other; an anti-interference water tank is arranged on each of the two adjacent box girders, an adjusting device capable of adjusting the water quantity in the anti-interference water tank is arranged in the anti-interference water tank, and then concrete is poured in the closure section; after the closure section is poured, the corresponding rhombic hanging basket system is detached, and the effect of improving the precision of the balance weight is achieved.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a rhombic hanging basket construction method.
Background
With the continuous development of traffic, the construction of a large-span bridge above a river is often required. The construction of the large-span bridge is usually carried out by using the rhombic hanging baskets, namely, the corresponding rhombic supports are arranged at the existing bridge piers, the front ends of the rhombic supports are provided with corresponding bearing systems, the bearing systems are provided with corresponding box girder templates, the box girders are poured through the box girder templates, and when one section of the box girder is poured, the rhombic hanging baskets integrally move forwards by a certain distance, so that the bridge is continuously poured and molded until the closure is achieved.
The existing box girder needs to anchor a box girder template between two sections of box girders poured in the process of pouring the box girder, then concrete is poured in the box girder template to form a closure section, the concrete weight of the closure section can be directly applied to the box girders on two sides of the closure section, the two sides of the closure section are bent downwards along with continuous injection of the concrete, cracks are easy to appear at the bottom of the closure section when pouring and forming, therefore, counter weights are arranged on the box girders on two ends of the closure section before pouring of the closure section, and the weight of the counter weights is continuously reduced along with continuous pouring of the concrete.
In view of the above related technologies, the inventor thinks that the traditional weighting method is sandbag weighting, and when adjusting the weighting weight of sandbags, the sandbags can only be added or subtracted one by one, and the weights of the sandbags all have a certain difference, which has the defect of low weighting precision.
Disclosure of Invention
In order to improve the precision of the balance weight, the application provides a construction method of the rhombic hanging basket.
The application provides a rhombus string basket construction method adopts following technical scheme:
a construction method of a rhombic hanging basket specifically comprises the following steps.
step 3, arranging hanging basket templates on the two rhombic hanging basket systems, and arranging a concrete pouring device on the zero bridge section to pour concrete in the two hanging basket templates and form a box girder;
step 4, respectively moving the two rhombic hanging basket systems forwards to the front end of the newly formed box girder, then pouring to form a new box girder, and repeating continuously until the two box girders corresponding to different bridge piers are close to each other;
and 6, after the closure section is poured, removing the corresponding rhombic hanging basket system.
Through adopting above-mentioned technical scheme, before closing the construction of dragon section, pour into the water of certain two into in the anti-interference water tank to reach the required weight value of counter weight, and the water in the anti-interference water tank can add or reduce at any time, and is very convenient, and the total weight of anti-interference water tank is adjusted according to inside water yield and is adjusted, and the counter weight precision has obtained great promotion.
Optionally, in step 2, the synchronous walking device includes two groups of walking jacks arranged in each cradle system, two groups of displacement sensors arranged in the two diamond cradle systems in a one-to-one correspondence manner, a master control console electrically connected to the two groups of displacement sensors and the two walking jacks for controlling the forward moving distance of the two cradle systems, and a walking power supply electrically connected to the master control console and the walking jacks.
Through adopting above-mentioned technical scheme, total control station is according to two rhombus string basket systems the signal that displacement sensor fed back in the walking process, and two rhombus string basket systems are walked in step for two rhombus string basket systems carry out synchronous increase to the interval between the pier of zero bridge section, make whole bridge section can remain stable betterly.
Optionally, when concrete of the two rhombic hanging basket systems in the step 3 is poured, the box girder bottom plate close to the mid-span is poured first, the box girder bottom plate close to the side-span is poured, the box girder web plate close to the mid-span is poured, the box girder web plate close to the side-span is poured, and the process is repeated continuously until the pouring of the two box girders is completed.
By adopting the technical scheme, the weights at two ends of the poured bridge section are not easy to have overlarge differences, and the poured bridge section can be kept stable well.
Optionally, the concrete pouring device includes a midspan grouting pipe, a side span grouting pipe, a main grouting pipe and a hydraulic three-way converter, the midspan grouting pipe and the main grouting pipe are arranged on the zero-number bridge section, the main grouting pipe inputs concrete slurry into the hydraulic three-way converter, the midspan grouting pipe performs concrete pouring of a box girder close to the midspan of the bridge, the side span grouting pipe performs concrete pouring of a box girder close to the side span of the bridge, and the hydraulic three-way converter controls the main grouting pipe to send the concrete slurry to one of the midspan grouting pipe and the side span grouting pipe.
By adopting the technical scheme, when the box girders at two ends of the poured bridge section are poured, the reciprocating pouring and forming of the box girders at two ends of the formed bridge section can be conveniently realized only by controlling the hydraulic three-way converter to make the main grouting pipe respectively perform grouting towards the mid-span grouting pipe and the side-span grouting pipe.
Optionally, the step 3 is performed with a pre-pressing test before the initial concrete pouring of the box girder, reaction frames located on the cradle template are arranged on two sides of the zero-number bridge section, pre-pressing jacks are arranged on the reaction frames, pre-pressing sensors for detecting the pressure loading values of the pre-pressing jacks are arranged at the end parts of the power rods of the cradle template, of the pre-pressing jacks, the pre-pressing jacks and the pre-pressing sensors are electrically connected with a pre-pressing control machine, the pre-pressing control machine and the pre-pressing jacks are electrically connected with a pre-pressing power supply, and the pre-pressing control machine controls the pre-pressing jacks to perform step-by-step pressurization.
Through adopting above-mentioned technical scheme, pre-compaction accuse machine is according to predetermined hierarchical pressure value, and control pre-compaction jack pressurizes step by step, has detected whether the holistic structural strength of rhombus string basket system meets the requirements for in the shaping process of pouring of actually carrying out the box girder, the difficult accident that appears.
Optionally, the adjusting device includes an in-tank sensor disposed on the bottom surface inside the anti-interference water tank, a drain valve disposed on the bottom of the anti-interference water tank, a water pump communicated with the anti-interference water tank and feeding water into the anti-interference water tank, an adjusting master controller electrically connected to the water pump, the drain valve, and the in-tank sensor and controlling the water in the anti-interference water tank to be kept at a set value, and an adjusting power supply electrically connected to the adjusting master controller, the drain valve, and the water pump.
Through adopting above-mentioned technical scheme, predetermine water tank weight value in adjusting the master controller, the water of control water pump income prediction weight to the anti-interference water tank for the weight regulation of water tank is more accurate, also makes the weight difference between the anti-interference water tank on two case roof beams that are close to the dragon section can carry out better controlling.
Optionally, the anti-interference water tank one end intercommunication is kept away from to the water pump has the filter box, and the inner wall department of filter box intercommunication water pump is equipped with thin filter screen, and the filter box is kept away from thin filter screen one side and has been seted up the water inlet, and the water inlet is equipped with the coarse strainer.
Through adopting above-mentioned technical scheme, the filter box is put into the river course for the in-process that the water pump carries out the pumping with the river, in some debris in the river course are difficult for entering into the water pump, influence the normal work of water pump.
Optionally, the inside bottom surface of filter box is equipped with the baffle, and there is the interval baffle upper surface and the inside upper surface of filter box, and the baffle can only flow to baffle towards fine filter screen one side between baffle upper surface and the inside upper surface of filter box towards the water of coarse filter screen one side.
By adopting the technical scheme, sundries in the river channel are not easy to block at the fine filter screen, so that the water pumping quantity of the water pump can be kept at a normal value.
Optionally, the filter box is provided with an upper floating ring block with a hollow inner part, and the upper floating ring block is provided with a depth device capable of controlling the air content in the filter box.
Through adopting above-mentioned technical scheme for pour the completion back at the closure section, through sending into gas in the buoyancy ring piece that makes progress, make the buoyancy ring piece can drive the filter box and go on come-up in step, need not be through the pipeline that stimulates intercommunication between water pump and the filter box, make the intercommunication department between filter box and the water pump keep better leakproofness always.
Optionally, the depth device comprises a floating block valve arranged at the bottom of the floating ring block, a high-pressure air pump communicated with the floating ring block, a water pressure sensor arranged on the floating ring block, a floating control machine electrically connected with the water pressure sensor, the high-pressure air pump and the floating block valve, and a floating power supply electrically connected with the high-pressure air pump, the floating block valve and the floating control machine, wherein the floating control machine enables the floating ring block to be positioned at a preset water depth.
Through adopting above-mentioned technical scheme for the come-up ring piece can keep in the predetermined degree of depth value department of come-up control machine, makes the filter box can keep in the position department of the below certain degree of depth of river surface, makes inside some debris on river surface or river course bottom department are difficult for entering the filter box, makes the water pump keep normally to the pump income river water in the anti-interference water tank as far as possible.
In summary, the present application includes at least one of the following benefits:
1. the water in the anti-interference water tank can be added or reduced at any time, so that the anti-interference water tank is very convenient, the total weight of the anti-interference water tank is adjusted according to the internal water quantity, and the counterweight precision is greatly improved;
2. the weight difference between two ends of the poured bridge section is not easy to be too large, and the poured bridge section can be kept stable well.
Drawings
FIG. 1 is a schematic structural diagram of a diamond cradle system at the bottom of the application on a track;
FIG. 2 is a schematic structural diagram of a zero-grade bridge segment with a set of reaction frames during a pre-compaction test in the application;
FIG. 3 is a schematic structural view of a concrete pouring apparatus according to the present application;
FIG. 4 is a schematic diagram of the structure of one side of the hydraulic three-way switch in the present application;
FIG. 5 is a schematic diagram of the other side of the hydraulic three-way switch of the present application;
FIG. 6 is a schematic view of the present application showing the interior of the filter box with openings in the upper surface of the filter box;
fig. 7 is a schematic view of the structure of fig. 6 from another perspective.
Description of reference numerals: 1. a synchronous traveling device; 11. a walking jack; 12. a displacement sensor; 13. a master control console; 14. a walking power supply; 15. a connecting rod; 16. anchoring the cross beam; 17. a hydraulic cylinder is converted; 18. a pipe groove; 2. a concrete pouring device; 21. a midspan grouting pipe; 22. side span grouting pipes; 23. a main grouting pipe; 24. a hydraulic three-way converter; 25. a fixing plate; 26. a conversion plate; 27. a main grouting hole; 28. side span grouting holes; 29. midspan grouting holes; 3. an anti-interference water tank; 31. a partition plate; 32. a float valve; 33. a high pressure air pump; 34. a water pressure sensor; 35. floating up a control machine; 36. a floating power supply; 37. floating ring blocks; 4. an adjustment device; 41. an in-tank sensor; 42. a water drain valve; 43. a water pump; 44. adjusting a master controller; 45. adjusting a power supply; 46. a filter box; 47. a fine filter screen; 48. a water inlet; 49. coarse filtration; 5. a reaction frame; 51. pre-pressing the jack; 52. a pre-compression sensor; 53. pre-pressing a control machine; 54. and pre-pressing the power supply.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses a construction method of a rhombic hanging basket, which specifically comprises the following steps:
And 2, installing a synchronous walking device 1 on the two rhombic hanging basket systems corresponding to the same bridge pier, so that the two rhombic hanging basket systems on the same zero bridge section can reversely walk, and the two adjacent rhombic hanging basket systems of the two adjacent bridge piers are close to each other until the bridge section is closed.
Referring to fig. 1, each synchronous running gear 1 all includes two walking jacks 11 of every group, walking jack 11 chooses for use hydraulic jack, basket system is hung to a rhombus that every group walking jack 11 corresponds, two track front ends of the same group all can be dismantled through the screw and be connected with anchor crossbeam 16, two anchor crossbeams 16 all anchor the lower part department of hanging basket system towards the rhombus has connecting rod 15, connecting rod 15 can be steel strand wires or finish rolling screw-thread steel, connecting rod 15 wears to locate the lower part of hanging basket system in the rhombus, connecting rod 15 is kept away from the cylinder body that 16 one end of anchor crossbeam welded in walking jack 11's pneumatic cylinder, the power rod of walking jack 11 pneumatic cylinder articulates in the lower part department of hanging basket system in the rhombus through the round pin axle. When the hydraulic cylinder of the walking jack 11 is communicated with an external oil source, the rhombic hanging basket system moves towards the front end of the track.
Referring to fig. 1, the synchronous walking device 1 further comprises a plurality of sets of displacement sensors 12 detachably connected to each rhombic hanging basket system through screws, each set of displacement sensors 12 is provided with two rows of rails corresponding to the same set, two sets of displacement sensors 12 corresponding to two rhombic hanging basket systems of the same bridge pier are electrically connected with the same master console 13, the oil pump of the master console 13 and the oil pump of the walking jack 11 are electrically connected with a walking power supply 14 (not shown in the figure), the master console 13 is internally provided with a corresponding a/D converter and a PLC controller, so that corresponding moving values are preset in the master console 13, the same rhombic hanging basket systems can be synchronously moved on the two rails corresponding to the same set, and the two rhombic hanging basket systems corresponding to the same bridge pier are controlled to synchronously and reversely move.
And 3, all setting the hanging basket templates for the two rhombic hanging basket systems, and installing a concrete pouring device 2 on the zero bridge section so as to pour concrete in the two hanging basket templates and form a box girder.
Referring to fig. 2, after the setting of the hanging basket template is completed, a prepressing test is performed before the first box girder pouring is performed. A set of reaction frames 5 are anchored at two ends of a zero bridge section, two reaction frames 5 are arranged in each set, each reaction frame 5 is provided with a pre-pressing jack 51, each pre-pressing jack 51 is a hydraulic jack, a hydraulic cylinder of each pre-pressing jack 51 is fixedly connected to the lower surface of each reaction frame 5, a hydraulic cylinder power rod of each pre-pressing jack 51 moves in the vertical direction, a pre-pressing sensor 52 is fixedly connected to the bottom end of the hydraulic cylinder power rod of each pre-pressing jack 51, each pre-pressing sensor 52 is a pressure sensor, each pre-pressing sensor 52 is driven to move towards a hanging basket template, an oil pump of each pre-pressing jack 51 and each pre-pressing sensor 52 are electrically connected with a pre-pressing control machine 53, each oil pump of each pre-pressing control machine 53 and each pre-pressing jack 51 is provided with a pre-pressing power supply 54 (not shown in the figure), a corresponding A/D converter and a PLC controller are arranged in each pre-pressing control machine 53, so that graded loads are preset in each pre-pressing jack 51 and the hanging basket template is pressed step by step, and the rhombic hanging basket system is not prone to cause accidents due to structural damage in the actual box girder pouring process.
Referring to fig. 3 and 4, the concrete pouring device 2 comprises a side span grouting pipe 22, a mid span grouting pipe 21 and a main grouting pipe 23 detachably connected to bridge sections through anchor ears, the main grouting pipe 23 is communicated with a vehicle-mounted pump on a cement truck at the ground under the bridge piers, one end of the main grouting pipe 23, which is far away from the cement truck, is positioned on a zero bridge section at the upper end of the bridge piers, and a hydraulic three-way converter 24 is installed at the upper end of the main grouting pipe 23. Hydraulic pressure tee bend converter 24 is including anchoring in the fixed plate 25 on ground, fixed plate 25 is vertical, fixed plate 25 length direction is the level, along the inseparable sliding connection of fixed plate 25 length direction there is converter plate 26 in the fixed plate 25, converter plate 26 is vertical, the horizontal length direction of converter plate 26 is on a parallel with fixed plate 25 length direction, converter plate 26 length direction both ends one-to-one exposes respectively in the length direction both ends of fixed plate 25, the vertical outer wall at converter plate 26 length direction place runs through and has seted up total slip casting hole 27, total slip casting pipe 23 upper end flange joint is in converter plate 26 sets up total slip casting hole 27 department, fixed plate 25 has seted up tub 18 towards the vertical side of total slip casting pipe 23, converter plate 26 and total slip casting pipe 23 junction are in tub 18 along converter plate 26 length direction removal, make converter plate 26 can smoothly drive total slip casting pipe 23 and move.
Referring to fig. 3 and 5, the fixing plate 25 is formed with side span grouting holes 28 and middle span grouting holes 29, and the side span grouting holes 28 and the middle span grouting holes 29 are at the same height. One end of the upper surface of the fixed plate 25 is hinged with a conversion hydraulic cylinder 17, the rotating plane of the conversion hydraulic cylinder 17 is parallel to the vertical outer wall of the fixed plate 25 in the length direction, and the end part of the power rod of the conversion hydraulic cylinder 17 is hinged with the upper surface of the conversion plate 26 exposed out of one end of the fixed plate 25.
Referring to fig. 3 and 5, one end of the side span grouting pipe 22 is flange-connected to the position of the fixed plate 25 where the side span grouting hole 28 is formed, one end of the side span grouting pipe 22, which is far away from the fixed plate 25, is located at a box girder casting position close to the side span position of the bridge, and the side span position of the bridge is the position of one side of a low point at two ends of the whole bridge. One end of the midspan grouting pipe 21 is connected with the position, provided with the midspan grouting hole 29, of the fixing plate 25 through a flange, one end, far away from the fixing plate 25, of the midspan grouting pipe 21 is located at a box girder pouring position close to the midspan position of the bridge, and the midspan position of the bridge is a bridge section at the highest position of the middle height of the whole bridge. Conversion pneumatic cylinder 17 communicates outside oil source, make conversion board 26 remove along self length direction, make total slip casting pipe 23 communicate respectively in sidespan slip casting pipe 22 and midspan slip casting pipe 21, make when carrying out the box girder pouring of the bridge section both ends department that same pier corresponds, the pouring of the box girder bottom plate that is close to bridge midspan department is carried out earlier, then the pouring of the box girder bottom plate that is close to bridge sidespan department is carried out again, the pouring of the box girder web that is close to bridge midspan department is carried out again, the pouring of the box girder web that is close to bridge sidespan department is carried out again, make the box girder at the bridge section both ends that same pier corresponds carry out reciprocal pouring in proper order, make the bridge section both ends weight that same pier corresponds can not produce great gap.
And 4, respectively moving the two rhombic hanging basket systems forwards to the front ends of the newly formed box girders, pouring to form new box girders, and repeating continuously until the two box girders corresponding to different piers are close to each other to prepare for closure.
Adjusting device 4 includes two incasement sensors 41, and incasement sensor 41 is pressure sensor, and two incasement sensors 41 one-to-one respectively fixed connection are in the inside bottom surface department of disturbance rejection water tank 3, and two disturbance rejection water tank 3 upper surfaces all have a water pump 43 through the hose intercommunication, and water pump 43 can place subaerially under the closure section, and water pump 43 carries the river to in the disturbance rejection water tank 3. The vertical side of the bottom of the anti-interference water tank 3 is fixedly connected and communicated with a drain valve 42, the drain valve 42 is an electromagnetic valve, the drain valve 42, the in-tank sensor 41 and the water pump 43 are electrically connected with an adjusting master controller 44, and a corresponding A/D converter and a PLC (programmable logic controller) are arranged in the adjusting master controller 44, so that the water volume in the two anti-interference water tanks 3 close to the closure section is kept at the preset value of the adjusting master controller 44. The adjusting master controller 44, the water drain valve 42 and the water pump 43 are electrically connected with an adjusting power supply 45.
Referring to fig. 6 and 7, one end of the hose of the water pump 43 in the river channel is connected with a filter box 46 in a flange manner, the filter box 46 is communicated with an opening of the inner wall of the water pump 43 and is detachably connected with a fine filter screen 47 through screws, and the fine filter screen 47 can prevent small impurities in the river from entering the water pump 43. A water inlet 48 is formed in one side of the filter box 46, which is far away from the water pump 43, in a penetrating manner, a coarse filter 49 is detachably connected to the position, where the water inlet 48 is formed, of the filter box 46 through screws, and the coarse filter 49 blocks large-sized garbage sundries in a river channel outside the filter box 46. Inside bottom surface department fixedly connected with of straining box 46 is vertical baffle 31, the vertical side fixed connection in straining box 46 of the relative two thickness directions of baffle 31 has certain interval with the inside upper surface of straining box 46, baffle 31 upper surface height is higher than the highest height of water inlet 48, make baffle 31 towards the water of coarse strainer 49 one side can only follow and flow to baffle 31 towards fine filter screen 47 one side between baffle 31 upper surface and the inside upper surface of straining box 46, make and be difficult for having the stone debris to block in fine filter screen 47 department when straining box 46 is close to in the riverbed bottom, be difficult for influencing the normal work of water pump 43. The outer wall of the upper part of the filter box 46 is fixedly connected with a horizontal floating ring block 37 in a surrounding mode, the interior of the floating ring block 37 is hollow, and a depth device capable of controlling the air content in the interior of the floating ring block 37 is installed on the floating ring block 37.
The depth device comprises a high-pressure air pump 33 communicated with the upper surface of a floating ring block 37 through a hose, the lower surface of the floating ring block 37 is fixedly connected and communicated with a floating block valve 32, the floating block valve 32 is an electromagnetic valve, the lower surface of the floating ring block 37 is fixedly connected with a water pressure sensor 34, the floating block valve 32 and the high-pressure air pump 33 are electrically connected with a floating control machine 35, a corresponding A/D converter and a PLC (programmable logic controller) are arranged in the floating control machine 35, the water pressure values detected by the water pressure sensors 34 at different depths in a river are converted into water depth values, so that the floating ring block 37 is adjusted by the floating control machine 35 in a certain water depth of the river, when the river has enough depths, a filter box 46 can be kept at the middle water layer of the river, and the possibility that external sundries block a coarse filter screen 49 is reduced. The floating control machine 35, the high-pressure air pump 33 and the floating block valve 32 are electrically connected with a floating power supply 36.
And 6, after the closure section is poured, removing the corresponding rhombic hanging basket system.
The implementation principle of the construction method of the rhombic hanging basket in the embodiment of the application is as follows: set up two rhombus on the zero number bridge section on each pier and hang the basket system, make two rhombus that same pier corresponds hang the basket system and carry out reverse movement, in order constantly to carry out pouring of box girder bridge section, when the bridge section of different piers wants to be close when closing a dragon, anti-interference water tank 3 is placed to the nearly one end in two bridge sections that carry out a dragon, and increase to certain weight, then when closing a dragon section and pouring, pour the concrete of how much weight, just put out the water of how much weight in two anti-interference water tank 3 corresponding, pour the completion back until closing a dragon section, hang the basket system with the rhombus and demolish.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. A construction method of a rhombic hanging basket is characterized by comprising the following steps: the method specifically comprises the following steps:
step 1, constructing a zero concrete bridge section at the upper end of a pier, and then arranging two groups of tracks on the zero concrete bridge section, wherein each group of tracks is provided with a rhombic hanging basket system;
step 2, setting a synchronous walking device (1) to enable the rhombic hanging basket system to move forwards to a proper position on the track;
step 3, arranging hanging basket templates on the two rhombic hanging basket systems, and arranging a concrete pouring device (2) on the zero bridge section to pour concrete in the two hanging basket templates and form a box girder;
step 4, respectively moving the two rhombic hanging basket systems forwards to the front end of the newly formed box girder, pouring to form a new box girder, and repeating continuously until the two box girders corresponding to different bridge piers are close to each other;
step 5, arranging anti-interference water tanks (3) on the two adjacent tank beams, arranging adjusting devices (4) capable of adjusting the water amount in the anti-interference water tanks on the anti-interference water tanks (3), and then pouring closure section concrete;
step 6, after the closure section is poured, removing the corresponding rhombic hanging basket system;
the adjusting device (4) comprises an in-tank sensor (41) arranged on the bottom surface inside the anti-interference water tank (3), a drain valve (42) arranged on the bottom of the anti-interference water tank (3), a water pump (43) communicated with the anti-interference water tank (3) and feeding water into the anti-interference water tank (3), an adjusting master controller (44) electrically connected with the water pump (43), the drain valve (42) and the in-tank sensor (41) and controlling the water in the anti-interference water tank (3) to be kept at a set value, and an adjusting power supply (45) electrically connected with the adjusting master controller (44), the drain valve (42) and the water pump (43), wherein one end of the water pump (43) far away from the anti-interference water tank (3) is communicated with a filter tank (46), a fine filter screen (47) is arranged on the inner wall where the filter tank (46) is communicated with the water pump (43), a water inlet (48) is formed in one side of the filter tank (46) far away from the fine filter screen (47), a coarse filter screen (49) is arranged on the water inlet (48), a partition plate (31) is arranged on one side inside the bottom surface inside the filter tank (46), a space between the partition plate (31) and the inner surface of the filter tank (46), and the upper surface of the filter tank (31) is formed by the coarse screen (31), and the upper surface, and the coarse screen (31) is formed by the upper surface of the coarse screen (31) and the coarse screen (31) which only flows from the coarse screen (31) facing the coarse screen (31) and the upper surface of the coarse screen (31) and the coarse screen (31) is arranged on the upper surface, the filter box (46) is provided with a hollow floating ring block (37) inside, the floating ring block (37) is provided with a depth device capable of controlling the air content inside the floating ring block, the depth device comprises a floating block valve (32) arranged at the bottom of the floating ring block (37), a high-pressure air pump (33) communicated with the floating ring block (37), a water pressure sensor (34) arranged on the floating ring block (37), a floating control machine (35) electrically connected with the water pressure sensor (34) and the high-pressure air pump (33) and the floating block valve (32), and a floating power supply (36) electrically connected with the high-pressure air pump (33) and the floating block valve (32) and the floating control machine (35), and the floating control machine (35) enables the floating ring block (37) to be in a preset water depth.
2. The construction method of the rhombic hanging basket according to claim 1 is characterized in that: in the step 2, the synchronous walking device (1) comprises two groups of walking jacks (11) arranged in each hanging basket system, two groups of displacement sensors (12) which are correspondingly arranged in the two rhombic hanging basket systems one by one, a master control table (13) which is electrically connected with the two groups of displacement sensors (12) and the two walking jacks (11) to control the forward moving distance of the two hanging basket systems, and a walking power supply (14) which is electrically connected with the master control table (13) and the walking jacks (11).
3. The construction method of the rhombic hanging basket according to claim 1 is characterized in that: and 3, when concrete of the two rhombic hanging basket systems in the step 3 is poured, firstly pouring a box girder bottom plate close to the midspan, then pouring a box girder bottom plate close to the side span, then pouring a box girder web close to the midspan, then pouring a box girder web close to the side span, and repeating the steps until the pouring of the two box girders is finished.
4. The construction method of the rhombic hanging basket according to claim 3 is characterized in that: the concrete pouring device comprises a midspan grouting pipe (21), a side span grouting pipe (22) and a main grouting pipe (23) which are arranged on a zero-number bridge section, and a hydraulic three-way converter (24) which is arranged on the zero-number bridge section, wherein concrete grout is input into the hydraulic three-way converter (24) from the main grouting pipe (23), the midspan grouting pipe (21) performs concrete pouring of a box girder close to the midspan of the bridge, the side span grouting pipe (22) performs concrete pouring of the box girder close to the side span of the bridge, and the hydraulic three-way converter (24) controls the main grouting pipe (23) to send the concrete grout into one of the midspan grouting pipe (21) and the side span grouting pipe (22).
5. The construction method of the rhombic hanging basket according to claim 1 is characterized in that: step 3, carrying out a prepressing test before initial box girder concrete pouring, wherein reaction frames (5) positioned on the cradle template are arranged on two sides of a zero-number bridge section, prepressing jacks (51) are arranged on the reaction frames (5), prepressing sensors (52) for detecting pressure loading values of the prepressing jacks (51) are arranged at the end parts of the power rods of the prepressing jacks (51) facing the cradle template, the prepressing jacks (51) and the prepressing sensors (52) are electrically connected with a prepressing control machine (53), the prepressing control machine (53) and the prepressing jacks (51) are both electrically connected with a prepressing power supply (54), and the prepressing control machine (53) controls the prepressing jacks (51) to gradually pressurize.
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| CN115233572A (en) * | 2022-08-12 | 2022-10-25 | 无锡交通建设工程集团有限公司 | Water tank structure applied to rhombic hanging basket construction method |
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| CN102493362B (en) * | 2011-11-24 | 2013-11-20 | 中铁二十三局集团有限公司 | Construction method for midspan closure segment of longspan continuous rigid frame bridge |
| CN104631341A (en) * | 2015-01-29 | 2015-05-20 | 中铁港航局集团有限公司 | Novel hanging basket prepressing system and detecting method thereof |
| CN205446139U (en) * | 2015-12-25 | 2016-08-10 | 重庆东源农业开发有限公司 | Floating installation is used in water pump connection |
| CN205444919U (en) * | 2016-03-30 | 2016-08-10 | 中交一公局厦门工程有限公司 | Adjustable concrete pump pipe of flow |
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| CN210529909U (en) * | 2019-03-07 | 2020-05-15 | 浙江宏正项目管理有限责任公司 | A multi-functional drainage device for hydraulic engineering |
| CN109944170A (en) * | 2019-05-06 | 2019-06-28 | 重庆建工市政交通工程有限责任公司 | Continuous beam with high-pier end bay Cast-in-Situ Segment and closure section integrated construction system and construction method |
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