CN113026578A - Bridge rotation construction method - Google Patents
Bridge rotation construction method Download PDFInfo
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- CN113026578A CN113026578A CN202110349029.0A CN202110349029A CN113026578A CN 113026578 A CN113026578 A CN 113026578A CN 202110349029 A CN202110349029 A CN 202110349029A CN 113026578 A CN113026578 A CN 113026578A
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- cylinder ring
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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
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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Abstract
The invention relates to a bridge rotation construction method, and belongs to the field of bridge engineering and constructional engineering. The increasing demand of overpasses and urban bridges requires bridge construction to reduce the time of occupying lines and river channels as much as possible, so that in recent years, a swivel construction method is largely adopted. The turning construction method generally needs to order the steel ball hinge, and the manufacturing and transportation cost of the large-diameter steel ball hinge assembly is high. The invention provides a method for manufacturing a hinge body on site, which meets the requirements of horizontal rotation and fine adjustment in rotation construction, even beam body lifting. The hinge body of the invention uses less steel, is convenient to manufacture, can be manufactured by assistance of a common mechanical factory, even can be manufactured on site by a construction unit, and has the advantages of rapid installation, loose requirement on assembly error and low manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of bridge engineering and constructional engineering, and particularly relates to a bridge turning construction method.
Background
With the continuous development of economy, as the artery of economic development, the transportation line can not meet the requirement of economic development, and in the last two or thirty years, China continuously invests a large amount of capital into the transportation field to adapt to the economic development. Many new routes need to cross railways, highways, highway interchanges, deep valleys, scenic resorts, natural conservation areas, etc. Due to the limitation of construction conditions that railway, highway and canal traffic cannot be easily interrupted, the application of the swivel method in bridge construction is gradually increased. The bridge turning construction is that the half-bridges are prefabricated on two sides of a crossing area or at proper positions by using landforms or using simple and convenient supports, then the bridge structure is used as a turning body, the two half-bridges are turned to the axis positions of bridge positions to be closed into a bridge, and the construction process comprises two steps of turning and posture adjustment.
At present, the main device for realizing bridge swivel construction is a swivel hinge, which is generally made of steel and can be divided into a flat hinge and a spherical hinge in terms of a rotation form. The flat hinge is similar to a plane friction pair in structure, and the requirement on the gravity center deviation of a swivel system is high; the spherical hinge is developed on the basis of a swivel flat hinge, the spherical hinge is flexible to rotate, fine adjustment of the posture of a beam body can be achieved, the fine adjustment comprises up-down adjustment of a folding end and adjustment of the relative height difference of two transverse sides of a main beam, and therefore the spherical hinge is more applied to bridge swivel construction. The contrast shows that the flat hinge is convenient to manufacture, but has no fine adjustment function, so that the application of the flat hinge is limited.
Generally, steel ball hinges need to be customized in a swivel construction method, the diameter of the ball hinges is increased along with the increase of swivel weight, the diameter of the ball hinges is about 3m when the swivel weight is below 2 ten thousand tons generally, and the diameter of the ball hinges reaches more than 6m when the swivel weight reaches 4 ten thousand tons, so that the manufacturing, the transportation and the installation are very difficult, and the cost is high.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a bridge turning construction method. The method in the scheme comprises the following operation of manufacturing of a lower hinge body, manufacturing of an upper hinge body, manufacturing of a flat sliding plate in the hinge body, assembling of the hinge body and rotating, and the concrete construction steps are as follows:
step 1, manufacturing a lower hinge body, namely manufacturing a lower base plate and a lower cylinder ring assembly, placing and leveling the lower base plate on lower base concrete, pouring concrete below and around the lower base plate, assembling the lower cylinder ring assembly to form a lower cylinder ring, wherein the inner side of the lower cylinder ring is circular;
Preferably, in the step 1, the lower seat plate is a steel ring and is fixed with the concrete through anchor bars below; the lower cylinder ring assembly is made of cold-bending angle steel, the horizontal limb is arranged on the outer side of the circular arc, and the lower cylinder ring assembly is provided with a vertical stiffening plate; the horizontal limb of the lower cylinder ring component is provided with a screw hole which is fixed on the lower seat plate through a screw welded on the lower seat plate.
Preferably, in the step 2, the upper cylinder ring is made into a round shape by bending angle steel, and the outer diameter of the upper cylinder ring is 1mm-10mm smaller than the inner diameter of the lower cylinder ring; the thickness of the stainless steel plate is equal to or more than 2mm, and the upper surface is welded with anchor bars; and anchor bars are welded on the inner surface and the upper surface of the upper cylinder ring.
Preferably, in the step 3, the groove and the tetrafluoro slide block are both circular, the depth of the groove is the same, the tetrafluoro slide block can be firmly installed in the groove, and the height of an exposed part is 1mm-5 mm.
Preferably, in the step 4, the elastic bag is a rubber bag, the shape of the empty bag after being tiled is circular, and the error between the outer diameter and the inner diameter of the lower cylinder ring is less than plus or minus 100 mm.
Preferably, in step 5, the fluid is water.
Preferably, in step 3, the prepared smooth plate is coated with butter.
Preferably, in step 4, the input pipe and the output pipe are high-pressure rubber pipes, and the input pipe is connected with the high-pressure pump through the high-pressure rubber pipes.
Preferably, in step 4, the elastic bag is a metal bag, the shape after being laid flat is circular, and the error between the outer diameter and the inner diameter of the lower cylinder ring is less than plus or minus 100 mm.
Preferably, the metal bag is formed by welding two round metal sheets with the same size and then welding the edges of the two round metal sheets; or four square metal sheets are obtained by welding, each square metal sheet is folded along a diagonal line and cold-worked to form a quarter-arc at the outer edge, and finally the four obtained components are welded in the radial direction.
The lower cylinder sheet in the scheme can also be formed by casting; the upper cylinder ring can also be divided into a plurality of cylinder sheets and can also be manufactured by a casting method; the liquid in this scheme also can be hydraulic oil, the high-pressure oil pump of the direct use bridge building site of being convenient for. The elastic bag can be subjected to a water-filling pressure test after being manufactured, but the elastic bag does not expand completely and freely in a working state, so that the water pressure only needs to be several kilopascals.
The invention has the beneficial effects that: the scheme reserves the advantages of the conventional flat hinge in manufacturing, installation and swivel construction, the cylinder body consisting of the upper cylinder ring and the lower cylinder ring is manufactured on site, and after the flat hinge is in place, high-pressure liquid is injected into the elastic bag in the cylinder to allow the posture of the beam body to be finely adjusted, so that two functions of flat hinge and fine adjustment are realized, and the replacement of the spherical hinge is completed; compared with the conventional flat hinge, the hinge body in the scheme has the advantages that the added part of the hinge body is small in steel consumption and convenient to manufacture, the cold bending operation of the angle steel is mainly performed, the hinge body can be manufactured by assistance of a general mechanical factory, and a construction unit can even manufacture the angle steel on site by the construction unit; the added structure is quick to install, the requirement on assembly errors is loose, common workers can complete the operation, and the added field use is little; when the posture is adjusted, the construction is safe and controllable by controlling the high-pressure liquid injected into the elastic bag; the height of the main beam can be adjusted by controlling the amount of the high-pressure liquid injected into the elastic bag, and the conventional other rotating devices do not have the function; the hinge body is convenient to manufacture due to the fact that a rotating shaft is omitted; through injecting into liquid in the elastic bag, raise the girder, can realize the hinge body major assembly, including taking out of lower cylinder piece, elastic bag and smooth board, realize reuse, further reduce the cost.
Drawings
FIG. 1 is a schematic view of a hinge body in embodiment 1;
FIG. 2 is an enlarged partial schematic view of FIG. 1 showing the connection of the upper hinge body to the lower hinge body;
FIG. 3 is a schematic top view of the lower plate;
FIG. 4 is a schematic top view of the lower hinge body;
FIG. 5 is a schematic top view of a lower cylinder plate comprising a lower cylinder ring;
FIG. 6 is a schematic top view of a smoothing plate;
FIG. 7 is a schematic cross-sectional view of the upper hinge body;
FIG. 8 is a schematic top view of the metal pouch of example 3;
fig. 9 is a schematic view of a metal bag stack in example 3.
In the figure: 1-bearing platform concrete, 2-pier concrete, 3-lower seat plate, 4-lower cylinder ring, 5-upper cylinder ring, 6-rubber bag, 7-filling water, 8-smooth plate, 9-water inlet pipe, 10-water outlet pipe, 11-lower anchor bar, 12-upper anchor bar, 13-stainless steel plate, 14-tetrafluoro slide block, 15-in-cylinder concrete, 16-screw hole, 17-lower cylinder sheet, 18-screw, 19-nut, 20-stiffening plate, 21-groove and 22-transverse anchor bar.
Detailed Description
Example 1
The hinge body in the embodiment is schematically shown in fig. 1, and a partial enlarged schematic view of the joint of the upper hinge body and the lower hinge body is shown in fig. 2. The construction method provided by the embodiment is similar to a conventional flat rotation method, and is different in the operations of the manufacturing of the lower hinge body, the manufacturing of the upper hinge body, the manufacturing of the flat sliding plate in the hinge body, the assembly of the hinge body and the rotation process, and the specific construction steps are as follows:
step 1. the lower seat plate 3 for manufacturing the lower hinge body is a steel circular ring, and the thickness of the plate is 20mm, which is shown in figure 3. The lower seat plate 3 is formed by leveling a plurality of steel plate pieces on the bearing platform concrete 1 and then welding the steel plate pieces. The lower anchor bars 11 are welded on the lower surface of the lower seat plate 3. Then, concrete is poured below and around the lower seat plate 3; the lower cylinder sheet 17 is made by cold-bending 7.5# equilateral angle steel with the thickness of 10mm, referring to fig. 5, the horizontal limb is arranged at the outer side of the circular arc, and the lower cylinder sheet 17 is provided with a vertical stiffening plate 20. A lower cylinder sheet 17 is arranged on the lower seat plate 3 and is encircled into a circle; the lower seat plate 3 is marked with the position of a screw hole 16, a screw 18 is welded at the position, and a lower cylinder piece 17 is attached by tightening a nut 19 to form the lower cylinder ring 4. The fabrication of the lower hinge body is completed, see fig. 4. The lower hinge body mainly comprises a lower seat plate 3 and a lower cylinder ring 4. In order to enhance the connection strength between the lower hinge body components, the lower seat plate 3 and the inner and outer circumferential connecting seams formed by all the lower cylinder sheets 17 can be welded.
And 3, manufacturing the smooth plate 8 in the hinge body, wherein the manufacturing method is similar to that of the conventional smooth hinge, but the manufacturing is more convenient because a rotating shaft is not needed. The smooth plate 8 is manufactured into a plurality of pieces in a steel member processing factory, the upper surface of each steel plate is provided with a groove 21 for placing the tetrafluoro slide block 14, the steel plates are assembled and welded after being transported to a construction site, and the tetrafluoro slide block 14 is firmly arranged in the groove 21; both the groove 21 and the tetrafluoro slider 14 are circular, see fig. 6. The thickness of the steel plate used by the smooth plate 8 is 6mm, and the depth of the groove 21 is 4 mm; the height of the tetrafluoro slide block 14 is 6mm, and the height of the exposed part after installation is 2 mm. Subsequently, butter was applied to the smooth plate 8.
And 4, assembling the hinge body, and placing a rubber bag 6 in the lower cylinder ring 4. The wall thickness of the rubber bag 6 is 2mm, the shape after being tiled is circular, the outer diameter is 10mm smaller than the inner diameter of the lower cylinder ring 4, and the rubber bag is provided with a water inlet pipe 9 and a water outlet pipe 10. Holes are drilled in the vertical wall of a lower cylinder plate 17 so that the inlet pipe 9 and the outlet pipe 10 extend out of the lower cylinder ring 4. The water inlet pipe 9 and the water outlet pipe 10 are high-pressure rubber pipes, the outer end of the water outlet pipe 10 is provided with a valve, and the water inlet pipe 9 is connected with a high-pressure pump through the high-pressure rubber pipes. Hoisting the smooth plate 8 and pressing the smooth plate on the rubber bag 6; hoisting and installing the upper hinge body, sleeving the upper cylinder ring 5 in the lower cylinder ring 4, and adjusting and fixing the upper hinge body; similar to the conventional flat hinge construction, the circular slide way, the supporting feet and the sand cylinder are arranged around the hinge body, and the pier concrete 2 is poured. Thus, the hinge body is manufactured and installed.
Example 2
This embodiment is substantially the same as embodiment 1, and the corresponding hinge construction is shown in the same view as in fig. 1, except that the rubber bag 6 is replaced by a metal bag. The metal bag is formed by welding the edges of two round stainless steel metal sheets with the same size. The outer diameter of the metal sheet is the same as the inner diameter of the lower cylinder ring 4. The expansion of the metal bag after filling with fluid is a widely used technique in the automobile manufacturing industry, and the hydroforming technique has recently been used in the furniture industry. When the fluid filling the metal bag is a gas, it is called "blow-moulding" or "hydroforming technique". The metal bag can overcome the defect that the rubber bag 6 has a certain compression amount under the action of the upper pressure. The metal bag is made of stainless steel, so that the sheet can be prevented from being corroded, the durability is improved, and the sheet can be prevented from being corroded and thinned during construction. After the metal bag is placed into the lower cylinder ring 4, single-grain-diameter quartz sand with the grain diameter of 1mm is filled into the interior of the lower cylinder ring through the water inlet pipe 9 or the water outlet pipe 10, the metal bag is spread out and then is fully distributed in the interior area of the lower cylinder ring 4, the thickness of the metal bag reaches 30mm, and the upper surface of the metal bag is higher than the connecting positions of the metal bag, the water inlet pipe 9 and the water outlet pipe 10. The flat sliding plate 8 is placed on the metal bag.
Example 3
This embodiment is substantially the same as embodiment 1, and the corresponding hinge construction is shown in the same view as in fig. 1, except that the rubber bag 6 is replaced by a metal bag. Considering that a thin metal plate with a thickness of 0.2mm can be up to 4m long and therefore long enough, but the width is generally not more than 1500mm, two pieces of metal sheet can be spliced and cut to obtain a square when the diameter of the smooth plate 8 is within 6 m. The square metal sheet was folded along one diagonal and cold worked to have an outer edge in the shape of a quarter of a circular arc with a selected bending radius of 2mm to obtain a metal bag assembly, see fig. 9. Finally four such assemblies of metal bags are welded in radial direction, resulting in metal bags, see fig. 8.
Claims (10)
1. A bridge rotation construction method is characterized in that: the method comprises the following steps of manufacturing a lower hinge body, manufacturing an upper hinge body, manufacturing a flat sliding plate in the hinge body, assembling the hinge body and operating the rotating process, wherein the concrete construction steps are as follows:
step 1, manufacturing a lower hinge body, namely manufacturing a lower base plate and a lower cylinder ring assembly, placing and leveling the lower base plate on lower base concrete, pouring concrete below and around the lower base plate, assembling the lower cylinder ring assembly to form a lower cylinder ring, wherein the inner side of the lower cylinder ring is circular;
step 2, manufacturing an upper hinge body, namely manufacturing an upper cylinder ring, wherein the outer side of the upper cylinder ring is circular and can be sleeved in a lower cylinder ring; horizontally placing a round stainless steel plate on a flat site, wherein the outer diameter of the stainless steel plate is equal to or less than that of the upper cylinder ring, and pouring concrete in the cylinder;
step 3, manufacturing a groove for placing the tetrafluoro sliding block on one surface of each steel plate in the hinge body flat sliding plate, welding each steel plate to form a circle, and mounting the tetrafluoro sliding block in the groove;
step 4, assembling the hinge body into the lower cylinder ring to place the elastic bag, enabling an input pipe and an output pipe of the elastic bag to penetrate through the lower cylinder ring assembly to be connected outside the hinge body, pressing the smooth plate on the elastic bag, installing the upper hinge body, enabling the upper cylinder ring to be sleeved in the lower cylinder ring, and adjusting and fixing the upper hinge body; arranging a circular slideway, a supporting leg and a sand cylinder around the hinge body, and pouring concrete above the hinge body;
step 5, performing horizontal rotation according to a conventional method at the operation rotation starting stage of the rotation process; after the beam body rotates horizontally in place, if the posture of the beam body needs to be finely adjusted, fluid is filled into the elastic bag, the elastic bag expands, the horizontal sliding plate is jacked up, and fine adjustment is completed by using a jack until the design requirement is met; if the elevation of the beam body is lower than the designed elevation, the elevation can be realized by inputting fluid into the elastic bag; and finishing bridge rotation construction. And then, fixing the structure above the hinge body around the hinge body, and sealing the hinge to complete the subsequent construction of the pier.
2. The method of bridge swivel construction according to claim 1, wherein: in the step 1, the lower seat plate is a steel circular ring and is fixed with concrete through anchor bars below; the lower cylinder ring assembly is made of cold-bending angle steel, the horizontal limb is arranged on the outer side of the circular arc, and the lower cylinder ring assembly is provided with a vertical stiffening plate; the horizontal limb of the lower cylinder ring component is provided with a screw hole which is fixed on the lower seat plate through a screw welded on the lower seat plate.
3. The method of bridge swivel construction according to claim 1, wherein: in the step 2, the upper cylinder ring is made into a round shape by bending angle steel, and the outer diameter is 1mm-10mm smaller than the inner diameter of the lower cylinder ring; the thickness of the stainless steel plate is equal to or more than 2mm, and the upper surface is welded with anchor bars; and anchor bars are welded on the inner surface and the upper surface of the upper cylinder ring.
4. The method of bridge swivel construction according to claim 1, wherein: in the step 3, the groove and the PTFE slide block are both circular, the depth of the groove is the same, the PTFE slide block can be firmly arranged in the groove, and the exposed part is 1mm-5mm high.
5. The method of bridge swivel construction according to claim 1, wherein: in the step 4, the elastic bag is a rubber bag, the shape of the laid empty bag is circular, and the error between the outer diameter and the inner diameter of the lower cylinder ring is less than plus or minus 100 mm.
6. The method of bridge swivel construction according to claim 1, wherein: in step 5, the fluid is water.
7. The method of bridge swivel construction according to claim 1, wherein: and 3, coating butter on the prepared smooth plate.
8. The method of bridge swivel construction according to claim 1, wherein: in the step 4, the input pipe and the output pipe adopt high-pressure rubber pipes, and the input pipe is connected with a high-pressure pump through the high-pressure rubber pipes.
9. The method of bridge swivel construction according to claim 1, wherein: in the step 4, the elastic bag is a metal bag, the shape after being tiled is circular, and the error between the outer diameter and the inner diameter of the lower cylinder ring is less than plus or minus 100 mm.
10. The method of bridge swivel construction according to claim 9, wherein: the metal bag system is formed by welding two round metal sheets with the same size and then welding the edges of the two round metal sheets; or four square metal sheets are obtained by welding, each square metal sheet is folded along a diagonal line and cold-worked to form a quarter-arc at the outer edge, and finally the four obtained components are welded in the radial direction.
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| CN202110349029.0A CN113026578A (en) | 2021-03-31 | 2021-03-31 | Bridge rotation construction method |
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| CN202110349029.0A CN113026578A (en) | 2021-03-31 | 2021-03-31 | Bridge rotation construction method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105155429A (en) * | 2015-07-02 | 2015-12-16 | 北京交达铁工科技有限公司 | Spherical hinge for swivel construction, machining method for spherical hinge and installation method for spherical hinge |
| CN204959592U (en) * | 2015-08-25 | 2016-01-13 | 衡水橡胶股份有限公司 | Increase shock attenuation pot rubber bearing |
| CN105507162A (en) * | 2015-11-24 | 2016-04-20 | 中铁工程设计咨询集团有限公司 | Steel pipe concrete rotary hinging device, rotating system and method determining rotating system parameters |
| CN105672124A (en) * | 2016-03-24 | 2016-06-15 | 济南大学 | Height-adjustable damping pot-type rubber support |
| CN205975385U (en) * | 2016-07-12 | 2017-02-22 | 铁道第三勘察设计院集团有限公司 | Benzvalene form rotation construction device |
| KR101931207B1 (en) * | 2018-06-12 | 2018-12-20 | 유니슨이테크 주식회사 | Rotation identifiable pot bearing |
| CN210122693U (en) * | 2019-04-10 | 2020-03-03 | 中铁第一勘察设计院集团有限公司 | Force-measuring basin type rotating center support |
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2021
- 2021-03-31 CN CN202110349029.0A patent/CN113026578A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155429A (en) * | 2015-07-02 | 2015-12-16 | 北京交达铁工科技有限公司 | Spherical hinge for swivel construction, machining method for spherical hinge and installation method for spherical hinge |
| CN204959592U (en) * | 2015-08-25 | 2016-01-13 | 衡水橡胶股份有限公司 | Increase shock attenuation pot rubber bearing |
| CN105507162A (en) * | 2015-11-24 | 2016-04-20 | 中铁工程设计咨询集团有限公司 | Steel pipe concrete rotary hinging device, rotating system and method determining rotating system parameters |
| CN105672124A (en) * | 2016-03-24 | 2016-06-15 | 济南大学 | Height-adjustable damping pot-type rubber support |
| CN205975385U (en) * | 2016-07-12 | 2017-02-22 | 铁道第三勘察设计院集团有限公司 | Benzvalene form rotation construction device |
| KR101931207B1 (en) * | 2018-06-12 | 2018-12-20 | 유니슨이테크 주식회사 | Rotation identifiable pot bearing |
| CN210122693U (en) * | 2019-04-10 | 2020-03-03 | 中铁第一勘察设计院集团有限公司 | Force-measuring basin type rotating center support |
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