CN107905119B - Bridge construction is with falling frame device and method - Google Patents
Bridge construction is with falling frame device and method Download PDFInfo
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- CN107905119B CN107905119B CN201711438509.4A CN201711438509A CN107905119B CN 107905119 B CN107905119 B CN 107905119B CN 201711438509 A CN201711438509 A CN 201711438509A CN 107905119 B CN107905119 B CN 107905119B
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000000945 filler Substances 0.000 claims abstract description 44
- 238000011084 recovery Methods 0.000 claims abstract description 20
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- 238000011065 in-situ storage Methods 0.000 claims abstract description 10
- 238000004090 dissolution Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 42
- 239000013078 crystal Substances 0.000 claims description 21
- 239000011780 sodium chloride Substances 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 19
- 239000004576 sand Substances 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 10
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 6
- 239000008188 pellet Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 244000035744 Hura crepitans Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Filtration Of Liquid (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a falling frame device for bridge construction, which comprises an outer cylinder, an inner cylinder, a filler, a water inlet pipe, a water outlet pipe, a PVC hose, a high-pressure water pump and a wastewater recovery tank. A falling frame method matched with the falling frame device, the method comprises the following steps: step 1: before pouring construction of the bridge, the outer cylinder is arranged on the supporting body, the bracket is arranged on the top plate of the inner cylinder, then the PVC hose is respectively connected with the water inlet pipe and the water outlet pipe; step 2: after the construction of the cast-in-situ bridge is finished and hardened, connecting a PVC hose with a high-pressure water pump and a wastewater recovery tank; step 3: starting a high-pressure water pump, and pressing water into the outer cylinder; step 4: along with the dissolution and discharge of the upper filler, the filler can be gradually compressed, and the inner cylinder is gradually lowered, so that falling frame is realized. The device and the method solve the problems of inconvenient operation and difficult balance in the prior art and have positive technical significance.
Description
Technical Field
The invention relates to a falling frame device and method for bridge construction, and belongs to the field of building construction equipment.
Background
Along with the vigorous development of the economy in China, the bridge construction enters a comprehensive development stage, and the construction method of the bridge engineering also needs to follow the steps.
At present, in bridge construction, a sand box device is mostly adopted as a falling frame device of a cast-in-situ box girder template bracket, namely sand is filled in a steel cylindrical sand cylinder, the sand cylinder is used for providing bearing capacity for surrounding the sand, a valve on the sand cylinder is opened after construction is completed, the sand flows out of pores, and the bearing capacity disappears, so that falling frame is completed. The device and the method mainly have the following defects: (1) The position of the sand cylinder is generally near the top of the pier, the height is higher, and the unloading of each sand cylinder is realized by unscrewing the valves of the sand cylinders one by special personnel through a specially-built scaffold, which is particularly time-consuming and labor-consuming for high piers. (2) The unloading of a plurality of supports or a plurality of sand cylinders of same support of same bridge hardly goes on in step, and bridge and support produce inhomogeneous atress easily, exist the potential safety hazard.
Therefore, designing a bridge construction falling frame device and a corresponding falling frame method which are convenient to operate and convenient to synchronously drop is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve the problems of inconvenient operation and difficult synchronous unloading of the falling frame device in the prior art, the invention provides a novel falling frame device and a falling frame method for bridge construction, which adopt the following technical scheme:
the utility model provides a bridge construction is with falling frame device which characterized in that includes: the device comprises an outer cylinder, an inner cylinder, a filler, a water inlet pipe, a water outlet pipe, a PVC hose, a high-pressure water pump and a wastewater recovery tank;
the outer cylinder comprises an outer cylinder wall and an outer cylinder bottom plate, wherein the outer cylinder wall is provided with a filtering device, and the filtering device comprises a separation plate with distribution holes, cast steel shots filled in the space between the separation plate and the outer cylinder wall, and the distribution holes of the outer cylinder wall corresponding to the water inlet pipe and the water outlet pipe;
the packing is arranged in the outer cylinder and is divided into 2 layers, the lower packing is sand, and the upper packing is solid packing at least partially of NaCl crystals;
the inner cylinder is arranged in the opening of the outer cylinder and above the filler;
the PVC hose is respectively connected with the high-pressure water pump and the water inlet pipe, and the wastewater recovery tank and the water outlet pipe.
Preferably, the inner cylinder comprises a top plate, an inner cylinder bottom plate, an inner cylinder wall, a stiffening plate and filling concrete, wherein the edge of the top plate of the support bracket exceeds the outer cylinder wall.
Or preferably, the height of the lower filler exceeds that of the filtering device, and the particle size is 1.25 mm-2.5 mm; the diameter of the partition plate distribution holes is smaller than the particle size of the lower filler.
Or preferably, the upper filler is a sand and NaCl crystal admixture, and the weight ratio of the NaCl crystal is 40% -70%.
Or preferably, the upper filler is all NaCl crystals.
The falling frame method using the falling frame device for any bridge construction is characterized by comprising the following steps of:
step 1: before bridge pouring construction, placing the outer cylinder on a support body, filling filler according to requirements, placing the inner cylinder on the outer cylinder, placing a bracket on a top plate of the inner cylinder, and then connecting PVC hoses on a water inlet pipe and a water outlet pipe respectively;
step 2: after the cast-in-situ bridge construction is hardened, connecting a PVC hose connected with a water inlet pipe with a high-pressure water pump, and connecting a PVC hose connected with a water outlet pipe with a wastewater recovery tank;
step 3: starting a high-pressure water pump, pressing water into the outer barrel, and entering a wastewater recovery tank through a water outlet pipe;
step 4: along with the dissolution and discharge of upper filler, the filler can be gradually compressed under the action of pressure, and the inner cylinder is gradually lowered, so that falling frame is realized.
The invention has the following advantages:
(1) The volume of the filling material is steadily reduced by a dissolving and discharging mode, so that the bracket steadily descends;
(2) The high-pressure water pump supplies water into the outer cylinder through the PVC hose, so that the inconvenience of manually and specially erecting a scaffold to operate the sand box in the prior art can be avoided, multiple paths of synchronous operation can be realized, the stability of the whole falling frame of the bracket is ensured, and the stress of the bridge and the bracket is uniform.
Drawings
FIG. 1 is a schematic overall application of an embodiment of the landing gear of the present invention;
FIG. 2 is a schematic sectional elevation view of a portion of the structure of an embodiment of the landing gear of the present invention;
FIG. 3 is a schematic cross-sectional view of a portion of the structure of an embodiment of the landing gear of the present invention;
FIG. 4 is an enlarged schematic view of a portion of FIG. 2;
fig. 5 is an enlarged partial schematic view of fig. 3.
Wherein: 1-an inner cylinder; 2-an outer cylinder; 3-filling; 4-a water inlet pipe; 5-a water outlet pipe; 6-PVC hose; 7-a high-pressure water pump; 8, a wastewater recovery tank; 9-top plate; 10-an inner cylinder bottom plate; 11-the wall of the inner cylinder; 12, a stiffening plate; 13-filling concrete; 14-sealing glass cement; 15-the wall of the outer cylinder; 16-an outer cylinder bottom plate; 17-a separator; 18-casting steel shots; 19-distributing holes on the wall of the outer cylinder; 20-partition plate distribution holes.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1:
as shown in fig. 1 to 5, a falling frame device for bridge construction includes: the device comprises an outer cylinder 2, an inner cylinder 1, a filler 3, a water inlet pipe 4, a water outlet pipe 5, a PVC hose 6, a high-pressure water pump 7 and a wastewater recovery tank 8;
the outer cylinder 2 comprises an outer cylinder wall 15 and an outer cylinder bottom plate 16, and a water inlet pipe 4, a water outlet pipe 5 and a filtering device are arranged at the lower part of the outer cylinder wall 15; the filtering device comprises a separation plate 17 with distribution holes, cast steel pellets 18 filled in the space between the separation plate 17 and the outer cylinder wall 15, and the distribution holes 19 of the outer cylinder wall corresponding to the water inlet pipe 4 and the water outlet pipe 5; wherein the diameter of the cast steel shots 18 is 3mm, and the diameter of the distribution holes 19 of the wall of the outer cylinder is 2mm.
The packing 3 with bearing function is arranged in the outer cylinder and is divided into 2 layers; the lower filler is sand with the particle size of 1.25-2.5 mm and the thickness of 10cm; the upper filler is a mixture of sand and NaCl crystals, the weight ratio is 6:4, the thickness is 24cm, and the NaCl crystals are fine particles; the height of the lower packing exceeds that of the filtering device, and the diameter of the distribution holes of the partition plate 17 is 1mm. After practical verification, the settlement after bearing meets the construction requirement after the filler in the embodiment is used, which shows that the strength of the filler meets the design requirement.
The inner cylinder 1 comprises a top plate 9, an inner cylinder bottom plate 10, an inner cylinder wall 11, stiffening plates 12 and filling concrete 13, wherein the edge of the top plate 9 of the support bracket exceeds the outer cylinder wall 15.
The frame falling device is applied to cast-in-situ construction of 5X 35m prefabricated box girder bridge pier bent cap bailey girder supports, and each construction support adopts 4 groups of frame falling cylinders; each group of falling frame cylinder comprises a 1 outer cylinder, a 1 inner cylinder and 1 group of filling materials, and the stress is 605.1kN;
the height of the outer cylinder 2 is 480mm; the inner diameter of the outer cylinder wall 15 is 497mm and the thickness is 25mm; the outer barrel floor 16 is 20mm thick. The height of the inner cylinder 1 is 240mm, the thickness of the inner cylinder wall 11, the inner cylinder bottom plate 10, the stiffening plate 12 and the top plate 9 is 20mm, the inner cylinder bottom plate 10 is matched with the inner side of the outer cylinder wall 15, and the outer diameter of the top plate 9 is 604mm.
The high-pressure water pump 7 adopts a JPS-Q130 type gasoline high-pressure cleaning machine, the flow is 15L/min, and the working pressure is 25MPa.
The method for falling the frame corresponding to the used device for falling the frame for bridge construction comprises the following steps:
step 1: before bridge pouring construction, placing the outer cylinder 2 on a support body, filling a filler 3 according to the requirement, placing the inner cylinder 1 in the outer cylinder 2, placing a bracket on a top plate 9 of the inner cylinder, and then connecting PVC hoses 6 on a water inlet pipe 4 and a water outlet pipe 5 respectively;
step 2: after the cast-in-situ bridge construction is hardened, connecting a PVC hose connected with a water inlet pipe 4 with a high-pressure water pump 7, and connecting a PVC hose 6 connected with a water outlet pipe 5 with a wastewater recovery tank 8;
step 3: starting a high-pressure water pump 7, pressing water into the outer cylinder 2, and entering a wastewater recovery tank 8 through the water outlet pipe 5;
step 4: along with the dissolution and discharge of NaCl crystals, the pores of the filler 3 become larger, the filler is gradually compressed under the action of pressure, and the inner cylinder 1 is gradually lowered, so that falling is realized.
And (3) measuring the sedimentation-time curves of the cylinders (1 # and 3# at the two sides of the bent cap during the falling frame, wherein the sedimentation-time curves of the cylinder 1# and the cylinder 3# are basically the same, the average total sedimentation amount is 67.4mm, and the synchronous falling frame requirement is met.
Example 2:
as shown in fig. 1 to 5, a falling frame device for bridge construction includes: the device comprises an outer cylinder 2, an inner cylinder 1, a filler 3, a water inlet pipe 4, a water outlet pipe 5, a PVC hose 6, a high-pressure water pump 7 and a wastewater recovery tank 8;
the outer cylinder 2 comprises an outer cylinder wall 15 and an outer cylinder bottom plate 16, and a water inlet pipe 4, a water outlet pipe 5 and a filtering device are arranged at the lower part of the outer cylinder wall 15; the filtering device comprises a separation plate 17 with distribution holes, cast steel pellets 18 filled in the space between the separation plate 17 and the outer cylinder wall 15, and the distribution holes 19 of the outer cylinder wall corresponding to the water inlet pipe 4 and the water outlet pipe 5; wherein the diameter of the cast steel shots 18 is 3mm, and the diameter of the distribution holes 19 of the wall of the outer cylinder is 2mm.
The packing 3 with bearing function is arranged in the outer cylinder and is divided into 2 layers; the lower filler is sand with the particle size of 1.25-2.5 mm and the thickness of 10cm; the upper filler is a mixture of sand and NaCl crystals, the weight ratio is 3:7, the thickness is 24cm, and the NaCl crystals are fine particles; the height of the lower packing exceeds that of the filtering device, and the diameter of the distribution holes of the partition plate 17 is 1mm. After practical verification, the settlement after bearing meets the construction requirement after the filler in the embodiment is used, which shows that the strength of the filler meets the design requirement.
The inner cylinder 1 comprises a top plate 9, an inner cylinder bottom plate 10, an inner cylinder wall 11, stiffening plates 12 and filling concrete 13, wherein the edge of the top plate 9 of the support bracket exceeds the outer cylinder wall 15.
The frame falling device is applied to cast-in-situ construction of 5X 35m prefabricated box girder bridge pier bent cap bailey girder supports, and each construction support adopts 4 groups of frame falling cylinders; each group of falling frame cylinder comprises a 1 outer cylinder, a 1 inner cylinder and 1 group of filling materials, and the stress is 605.1kN;
the height of the outer cylinder 2 is 480mm; the inner diameter of the outer cylinder wall 15 is 497mm and the thickness is 25mm; the outer barrel floor 16 is 20mm thick. The height of the inner cylinder 1 is 240mm, the thickness of the inner cylinder wall 11, the inner cylinder bottom plate 10, the stiffening plate 12 and the top plate 9 is 20mm, the inner cylinder bottom plate 10 is matched with the inner side of the outer cylinder wall 15, and the outer diameter of the top plate 9 is 604mm.
The high-pressure water pump 7 adopts a JPS-Q130 type gasoline high-pressure cleaning machine, the flow is 15L/min, and the working pressure is 25MPa.
The method for falling the frame corresponding to the used device for falling the frame for bridge construction comprises the following steps:
step 1: before bridge pouring construction, placing the outer cylinder 2 on a support body, filling a filler 3 according to the requirement, placing the inner cylinder 1 in the outer cylinder 2, placing a bracket on a top plate 9 of the inner cylinder, and then connecting PVC hoses 6 on a water inlet pipe 4 and a water outlet pipe 5 respectively;
step 2: after the cast-in-situ bridge construction is hardened, connecting a PVC hose connected with a water inlet pipe 4 with a high-pressure water pump 7, and connecting a PVC hose 6 connected with a water outlet pipe 5 with a wastewater recovery tank 8;
step 3: starting a high-pressure water pump 7, pressing water into the outer cylinder 2, and entering a wastewater recovery tank 8 through the water outlet pipe 5;
step 4: along with the dissolution and discharge of NaCl crystals, the pores of the filler 3 become larger, the filler is gradually compressed under the action of pressure, and the inner cylinder 1 is gradually lowered, so that falling is realized.
And (3) measuring the sedimentation-time curves of the cylinders (1 # and 2# at the two sides of the bent cap during the falling frame, wherein the sedimentation-time curves of the cylinder 1# and the cylinder 2# are basically the same, the average total sedimentation amount is 121.1mm, and the synchronous falling frame requirement is met.
Example 3:
as shown in fig. 1 to 5, a falling frame device for bridge construction includes: the device comprises an outer cylinder 2, an inner cylinder 1, a filler 3, a water inlet pipe 4, a water outlet pipe 5, a PVC hose 6, a high-pressure water pump 7 and a wastewater recovery tank 8;
the outer cylinder 2 comprises an outer cylinder wall 15 and an outer cylinder bottom plate 16, and a water inlet pipe 4, a water outlet pipe 5 and a filtering device are arranged at the lower part of the outer cylinder wall 15; the filtering device comprises a separation plate 17 with distribution holes, cast steel pellets 18 filled in the space between the separation plate 17 and the outer cylinder wall 15, and the distribution holes 19 of the outer cylinder wall corresponding to the water inlet pipe 4 and the water outlet pipe 5; wherein the diameter of the cast steel shots 18 is 3mm, and the diameter of the distribution holes 19 of the wall of the outer cylinder is 2mm.
The packing 3 with bearing function is arranged in the outer cylinder and is divided into 2 layers; the lower filler is sand with the particle size of 1.25-2.5 mm and the thickness of 10cm; the upper filler is NaCl crystals with the thickness of 24cm and the NaCl crystals are fine particles; the height of the lower packing exceeds that of the filtering device, and the diameter of the distribution holes of the partition plate 17 is 1mm. After practical verification, the settlement after bearing meets the construction requirement after the filler in the embodiment is used, which shows that the strength of the filler meets the design requirement.
The inner cylinder 1 comprises a top plate 9, an inner cylinder bottom plate 10, an inner cylinder wall 11, stiffening plates 12 and filling concrete 13, wherein the edge of the top plate 9 of the support bracket exceeds the outer cylinder wall 15.
The frame falling device is applied to cast-in-situ construction of 5X 35m prefabricated box girder bridge pier bent cap bailey girder supports, and each construction support adopts 4 groups of frame falling cylinders; each group of falling frame cylinder comprises a 1 outer cylinder, a 1 inner cylinder and 1 group of filling materials, and the stress is 605.1kN;
the height of the outer cylinder 2 is 480mm; the inner diameter of the outer cylinder wall 15 is 497mm and the thickness is 25mm; the outer barrel floor 16 is 20mm thick. The height of the inner cylinder 1 is 240mm, the thickness of the inner cylinder wall 11, the inner cylinder bottom plate 10, the stiffening plate 12 and the top plate 9 is 20mm, the inner cylinder bottom plate 10 is matched with the inner side of the outer cylinder wall 15, and the outer diameter of the top plate 9 is 604mm.
The high-pressure water pump 7 adopts a JPS-Q130 type gasoline high-pressure cleaning machine, the flow is 15L/min, and the working pressure is 25MPa.
The method for falling the frame corresponding to the used device for falling the frame for bridge construction comprises the following steps:
step 1: before bridge pouring construction, placing the outer cylinder 2 on a support body, filling a filler 3 according to the requirement, placing the inner cylinder 1 in the outer cylinder 2, placing a bracket on a top plate 9 of the inner cylinder, and then connecting PVC hoses 6 on a water inlet pipe 4 and a water outlet pipe 5 respectively;
step 2: after the cast-in-situ bridge construction is hardened, connecting a PVC hose connected with a water inlet pipe 4 with a high-pressure water pump 7, and connecting a PVC hose 6 connected with a water outlet pipe 5 with a wastewater recovery tank 8;
step 3: starting a high-pressure water pump 7, pressing water into the outer cylinder 2, and entering a wastewater recovery tank 8 through the water outlet pipe 5;
step 4: along with the dissolution and discharge of NaCl crystals, the filler is gradually compressed under the action of pressure, and the inner cylinder 1 is gradually lowered, so that falling frame is realized.
The sedimentation-time curves of the cylinders of the 4 groups of falling frames are basically the same, the average total sedimentation amount is 239.0mm, and the synchronous falling frame requirement is met.
As NaCl crystals, the compressive strength is very high based on the incompressibility of solids in the case of space limitation with a container; the side of Qinghai lake has a highway paved with salt, which can be used as an evidence. The first two embodiments of the invention take the form of a mixture, simply for practical engineering cost considerations. Because the stable falling frame is based on the process of NaCl crystal dissolution, the scheme of completely adopting NaCl crystals for the upper filler is not different from the scheme of partially adopting NaCl crystals in development trend.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention, and the parts not described in detail and shown in partial detail may be applied to the prior art and are not described in detail herein. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Claims (6)
1. The utility model provides a bridge construction is with falling frame device which characterized in that includes:
the device comprises an outer cylinder (2), an inner cylinder (1), a filler (3), a water inlet pipe (4), a water outlet pipe (5), a PVC hose (6), a high-pressure water pump (7) and a wastewater recovery tank (8);
the outer cylinder (2) comprises an outer cylinder wall (15) and an outer cylinder bottom plate (16), wherein the outer cylinder wall (15) is provided with a filtering device, and the filtering device comprises a separation plate (17) with a distribution hole, cast steel pellets (18) filled in the space between the separation plate (17) and the outer cylinder wall (15), and outer cylinder wall distribution holes (19) corresponding to the water inlet pipe (4) and the water outlet pipe (5) which are positioned in the cylinder;
the packing (3) is arranged in the outer cylinder (2) and is divided into 2 layers, the lower packing is sand, and the upper packing is solid packing at least partially of NaCl crystals;
the inner cylinder (1) is arranged in the opening of the outer cylinder (2) and above the filler (3);
the PVC hose (6) is respectively connected with the high-pressure water pump (7) and the water inlet pipe (4), the wastewater recovery box (8) and the water outlet pipe (5).
2. The drop rack arrangement according to claim 1, characterized in that the inner drum (1) comprises a top plate (9), an inner drum bottom plate (10), an inner drum wall (11), stiffening plates (12), filled concrete (13), wherein the edges of the top plate (9) of the support bracket extend beyond the outer drum wall (15).
3. The falling frame device according to claim 1, wherein the height of the lower filler exceeds that of the filtering device, and the particle size is 1.25 mm-2.5 mm; the diameter of the partition plate distribution holes is smaller than the particle size of the lower filler.
4. The falling frame device according to claim 1, wherein the upper filler is a sand and NaCl crystal admixture, and the weight ratio of NaCl crystals is 40% -70%.
5. The drop rack device of claim 1, wherein the upper packing is entirely NaCl crystals.
6. A racking method using the racking device of any of claims 1 to 5, comprising the steps of:
step 1: before bridge pouring construction, placing the outer cylinder (2) on a support body, filling a filler (3) according to requirements, placing the inner cylinder (1) in the outer cylinder (2), placing a bracket on a top plate (9) of the inner cylinder, and then connecting PVC hoses (6) on a water inlet pipe (4) and a water outlet pipe (5) respectively;
step 2: after the cast-in-situ bridge construction is hardened, connecting a PVC hose (6) connected with a water inlet pipe (4) with a high-pressure water pump (7), and connecting a PVC hose (6) connected with a water outlet pipe (5) with a wastewater recovery tank (8);
step 3: starting a high-pressure water pump (7), pressing water into the outer cylinder (2), and entering a wastewater recovery tank (8) through a water outlet pipe (5);
step 4: along with the dissolution and discharge of the upper filler, the filler (3) can be gradually compressed under the action of pressure, and the inner cylinder (1) is gradually lowered, so that falling is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711438509.4A CN107905119B (en) | 2017-12-27 | 2017-12-27 | Bridge construction is with falling frame device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711438509.4A CN107905119B (en) | 2017-12-27 | 2017-12-27 | Bridge construction is with falling frame device and method |
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| CN107905119A CN107905119A (en) | 2018-04-13 |
| CN107905119B true CN107905119B (en) | 2024-04-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2510015A1 (en) * | 1974-03-12 | 1975-09-18 | Koss Kurt | PROCESS AND DEVICE FOR SECTIONAL PRODUCTION OF THE INDIVIDUAL FIELDS OF THE SUPERSTRUCTURE OF PILLAR BRIDGES OR SIMILAR STRUCTURAL STRUCTURES |
| CN202718042U (en) * | 2012-08-14 | 2013-02-06 | 中交二公局第二工程有限公司 | Steel tube support cross slope adjusting and support-removing device in bridge construction |
| CN106758846A (en) * | 2017-01-12 | 2017-05-31 | 江苏省交通技师学院 | Cast-in-place box beam bracket and construction method |
| CN206784184U (en) * | 2017-05-12 | 2017-12-22 | 吉力此且 | Heavy template support system off-load stand apparatus |
| CN208105051U (en) * | 2017-12-27 | 2018-11-16 | 烟台大学 | A kind of bridge construction is with falling rack device |
-
2017
- 2017-12-27 CN CN201711438509.4A patent/CN107905119B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2510015A1 (en) * | 1974-03-12 | 1975-09-18 | Koss Kurt | PROCESS AND DEVICE FOR SECTIONAL PRODUCTION OF THE INDIVIDUAL FIELDS OF THE SUPERSTRUCTURE OF PILLAR BRIDGES OR SIMILAR STRUCTURAL STRUCTURES |
| GB1505145A (en) * | 1974-03-12 | 1978-03-30 | Koss K | Apparatus and method for building a concrete bridge superstructure |
| CN202718042U (en) * | 2012-08-14 | 2013-02-06 | 中交二公局第二工程有限公司 | Steel tube support cross slope adjusting and support-removing device in bridge construction |
| CN106758846A (en) * | 2017-01-12 | 2017-05-31 | 江苏省交通技师学院 | Cast-in-place box beam bracket and construction method |
| CN206784184U (en) * | 2017-05-12 | 2017-12-22 | 吉力此且 | Heavy template support system off-load stand apparatus |
| CN208105051U (en) * | 2017-12-27 | 2018-11-16 | 烟台大学 | A kind of bridge construction is with falling rack device |
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| CN107905119A (en) | 2018-04-13 |
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