CN109440656B - Deviation correcting device and deviation correcting method for transverse deviation in steel truss girder dragging process - Google Patents
Deviation correcting device and deviation correcting method for transverse deviation in steel truss girder dragging process Download PDFInfo
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- CN109440656B CN109440656B CN201811566122.1A CN201811566122A CN109440656B CN 109440656 B CN109440656 B CN 109440656B CN 201811566122 A CN201811566122 A CN 201811566122A CN 109440656 B CN109440656 B CN 109440656B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000012937 correction Methods 0.000 claims description 17
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
Classifications
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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
Abstract
The invention relates to the technical field of steel truss girder construction, in particular to a deviation correcting device and a deviation correcting method for transverse deviation in a steel truss girder dragging process. When the steel truss girder runs, namely, the upper slideway slides, the upper slideway and the steel truss girder are guided to be transversely offset and adjusted together according to the track of the offset guide rail by matching the fixed offset guide rail mechanism on the lower slideway and the limit mechanism fixed on the upper slideway, and the oil pressure/mechanical jack of the traditional automatic continuous jack is replaced by the offset device capable of rectifying through traction construction, so that the problems of complicated offset step and low offset efficiency of the traditional offset are solved.
Description
Technical Field
The invention relates to the technical field of steel truss girder construction, in particular to a deviation correcting device for transverse deviation in a steel truss girder dragging process and a deviation correcting method for transverse deviation in the steel truss girder dragging process.
Background
Along with the demands of development strategy in China, more and more overpass bridges are generated due to encryption of traffic networks, and underpinning type steel truss bridges are adopted for the overpass railway bridges to solve the problem of height limitation of existing lines. The span is changeable, the components are processed in the factory, and the quality is easier to guarantee. In order to reduce the interference to the normal operation of the existing line, a pulling method is mostly adopted for erection.
The traditional steel truss girder dragging small deviation correction adopts a mode of adjusting oil pressure of an automatic continuous jack and changing traction force on two sides, and the large deviation correction adopts a mode of pushing the side face of a girder body by a mechanical jack. However, in practical application, it is found that, by using a traditional deviation rectifying manner, temporary structures such as a slideway are affected by construction errors, the friction coefficient is always changed, the oil pressure of a jack is required to be continuously adjusted, the deviation rectifying effect is poor, the center line deviation value in the dragging process is larger and larger, the dragging construction is required to be stopped finally, and the construction efficiency is affected by deviation rectifying in a manner that a mechanical jack pushes the side face of a beam body. The jack reaction frame structure is complicated, and processing installation is difficult, pushes away the roof beam body side and can lead to the fact the damage to roof beam body finish, and influence the structure pleasing to the eye, and the roadbed section is assembled to the roadbed behind the platform has no jack reaction device position that can weld, appears big skew can only push away the front end, appears the condition that the central line was to one side skew easily, has great potential safety hazard.
Disclosure of Invention
The invention aims at: to the tradition that prior art exists need adopt mechanical jack to push away roof beam body side to the influence efficiency of construction that leads to, provide a convenient deviation correcting device that can carry out the lateral deviation adjustment through dragging construction.
In order to achieve the above object, the present invention provides the following technical solutions:
the deviation correcting device for the transverse deviation in the steel truss girder dragging process is characterized by comprising a deviation correcting guide rail mechanism and a limiting mechanism, wherein the deviation correcting guide rail mechanism comprises a left deviation correcting guide rail and a right deviation correcting guide rail, and the limiting mechanism comprises a left limiting block fixed on the left side of an upper slideway and a right limiting block fixed on the right side of the upper slideway; the left deviation correcting guide rail and the right deviation correcting guide rail are fixed between the bottom surface of the upper slideway and the top surface of the lower slideway, and the left deviation correcting guide rail and the right deviation correcting guide rail are oppositely arranged;
the lower slideway is fixedly arranged on the ground, the bottom surface of the upper slideway is arranged on the top surface of the lower slideway through a steel plate for adjusting the flatness and a polytetrafluoroethylene plate for reducing friction resistance, the steel truss is fixed on the top surface of the upper slideway, and the steel truss is driven to move by dragging the upper slideway in the correction process.
In the method, the moving direction of the steel truss girder is taken as the positive direction, the part arranged on the left side of the design center line is taken as the left side, the part on the right side of the design center line is taken as the right side, namely, the limiting block arranged on the left side of the design center line is taken as the left limiting block, the deviation correcting guide rail is a left deviation correcting guide rail, namely, the limiting block arranged on the right side of the design center line is taken as the right limiting block, and the deviation correcting guide rail is a right deviation correcting guide rail; designing a neutral line as the neutral line of the steel truss girder when no deviation occurs; when the correction starts, one side of the limiting block is contacted with the side face of the correction guide rail.
The steel truss girder, the upper slideway, the lower slideway, the steel plate and the polytetrafluoroethylene plate are all components of a traction operation construction preparation rather than a deviation correcting device, and the upper slideway and the steel truss girder are guided to carry out transverse deviation adjustment by the cooperation of the deviation correcting guide rail mechanism fixed on the lower slideway and the limit mechanism fixed on the upper slideway in the traction process of the steel truss girder, namely the sliding process of the upper slideway.
According to the invention, the deviation correcting guide rail mechanism and the limiting mechanism are arranged, the deviation correcting guide rail mechanism comprises a left deviation correcting guide rail and a right deviation correcting guide rail, the limiting mechanism comprises a left limiting block and a right limiting block, the left limiting block and the left deviation correcting guide rail are mutually matched to realize that the steel truss girder can move towards the left side of a designed central line, the right limiting block and the right deviation correcting guide rail are mutually matched to realize that the steel truss girder can move towards the right side of the designed central line, the left limiting block and the right limiting block are respectively fixed on the left side and the right side of an upper slideway, and the left deviation correcting guide rail and the right deviation correcting guide rail are both fixed between the bottom surface of the upper slideway and the top surface of a lower slideway; the left deviation correcting guide rail and the right deviation correcting guide rail are oppositely arranged, so that the steel truss girder arranged on the upper slideway can be subjected to first transverse deviation adjustment through the right limiting block and the right deviation correcting guide rail, and then the second transverse deviation adjustment is completed simultaneously with the left limiting block and the left deviation correcting guide rail. When the steel truss girder is pulled, namely, the upper slide rail slides, the fixed deviation correcting guide rail mechanism on the lower slide rail is matched with the limit mechanism fixed on the upper slide rail, the upper slide rail and the steel truss girder arranged on the upper slide rail are guided to move according to a certain track by the limit block and the deviation correcting guide rail, and the operation process, namely, the transverse deviation adjustment process, is realized.
Preferably, the left deviation correcting guide rail and the right deviation correcting guide rail are guide rails with inclined edges, the inclined edges are included angles with a design central line, the inclined edge side surfaces corresponding to the inclined edges are used for guiding the steel truss girder to carry out transverse deviation adjustment, the first transverse deviation adjustment is completed through the cooperation between the inclined edge side surfaces of the right deviation correcting guide rail and the right limiting block, and the second transverse deviation adjustment is completed through the cooperation between the inclined edge side surfaces of the left deviation correcting guide rail and the left limiting block and the cooperation between the inclined edge side surfaces of the right deviation correcting guide rail and the right limiting block.
In the correcting process, the steel truss girder is guided to carry out first transverse deviation adjustment through the cooperation of the bevel side face of the right correcting guide rail and the right limiting block, and the steel truss girder is realized second transverse deviation adjustment through the cooperation of the bevel side face of the right correcting guide rail and the right limiting block and the cooperation of the left limiting block and the left correcting guide rail.
First lateral deviation adjustment range: in the process, the matching of the bevel side surface of the left limiting block and the left deviation correcting guide rail is only that the matching of the bevel side surface of the right deviation correcting guide rail and the right limiting block guides the steel truss girder to move in the transverse direction and the longitudinal direction.
Second time lateral deviation adjustment range: the process is started by starting the cooperation of the bevel edge side surface of the left limiting block and the left deviation correcting guide rail, in the process, the bevel edge side surface of the right deviation correcting guide rail and the right limiting block cooperate to guide the steel truss girder to move in the transverse direction and the longitudinal direction, the bevel edge side surface of the left deviation correcting guide rail cooperates with the left limiting block to guide the steel truss girder to move in the transverse direction and the longitudinal direction, and when the left limiting block contacts with the farthest bevel edge of the left deviation correcting guide rail and the right limiting block contacts with the farthest bevel edge of the right deviation correcting guide rail, the transverse deviation adjustment is completed.
Preferably, the length of the bevel edge is 1200-2000mm.
Preferably, the left limiting block and the right limiting block are both L-shaped limiting blocks, the long sides of the L-shaped limiting blocks are arranged at the bottom of the I-steel of the upper slideway, and the short sides of the L-shaped limiting blocks correspond to the oblique sides of the left deviation correcting guide rail/the right deviation correcting guide rail.
The bottom surfaces of the left deviation correcting guide rail and the right deviation correcting guide rail correspond to the top surface of the lower slideway, and the top surfaces of the left deviation correcting guide rail and the right deviation correcting guide rail correspond to the bottom surface of the upper slideway.
Preferably, the sections of the left deviation rectifying guide rail and the right deviation rectifying guide rail are right triangle shapes, the right long side of the left deviation rectifying guide rail and the right long side of the right deviation rectifying guide rail are parallel to a design central line so as to be convenient to install, the parallel distance between the two right long sides is the width of the whole steel truss girder so as to complete the second time of transverse deviation adjustment, namely, the left deviation rectifying guide rail and the right deviation rectifying guide rail rectify simultaneously.
Preferably, the distance between the inner side surface of the short side of the L-shaped limiting block and the side surface of the glide slope is not more than 50mm, and the distance between the center line of the steel truss girder and the designed center line in the dragging process is prevented from being more than 50mm.
Preferably, the length of the right-angle short side of the right triangle is greater than or equal to 50mm, and the length of the right-angle short side corresponds to the adjustable distance of the transverse deviation.
Since the short side is 50mm and the hypotenuse is 1200-2000mm, the minimum angle of the right triangle has a certain range, wherein the optimal included angle of the minimum angle of the right triangle is 1.58 degrees.
The distance between the middle line of the steel truss girder and the designed middle line in the dragging process is not more than 50mm, and the distance of 50mm of the short side corresponds to the transverse deviation adjustable distance, so that the maximum transverse deviation adjustable distance is set to be 50mm as a design standard.
Preferably, the inclined edge is provided with a lubricant, and the lubricant is used for reducing the lateral friction force in the process of correcting deviation and dragging.
Wherein, also comprises a steel plate which plays a role of leveling and a polytetrafluoroethylene plate which reduces drag friction resistance.
The deviation correcting method for the transverse deviation of the steel truss girder dragging process comprises the following steps of:
s101, before the steel truss girder dragging operation starts, fixing a left limiting block on the left side of an upper slideway, and fixing a right limiting block on the right side of the upper slideway;
s102, starting the dragging operation, dragging the upper slideway and the steel truss girder, stopping the dragging operation when the deviation between the center line of the steel truss girder and the designed center line is more than 20mm, and starting to set a left deviation correcting guide rail and a right deviation correcting guide rail;
s1031, setting the right-angle long side of the right deviation correcting guide rail and a design central line to be in a parallel state, setting the distance between the right-angle long side of the right deviation correcting guide rail and one side of the inner side surface of the short side of the right limiting block, namely a preset value, wherein the preset value is equal to the length of the right-angle short side of the right deviation correcting guide rail minus a deviation value to be adjusted; and is the side closer to the design center line;
s1032, setting the transverse distance between the right-angle long side of the left deviation correcting guide rail and the right-angle long side of the right deviation correcting guide rail as the width of the steel truss girder, and setting the longitudinal distance between the left deviation correcting guide rail and the right deviation correcting guide rail as the distance between the left limiting block and the right limiting block, so that the setting of the deviation correcting guide rail is completed;
s104, continuing the dragging operation, wherein the limiting block at one side carries out the first transverse deviation adjustment under the limitation of the corresponding deviation correcting guide rail, the limiting block at the other side starts the second transverse deviation adjustment after the corresponding deviation correcting guide rail is contacted, and when the limiting blocks at two sides are simultaneously contacted with the corresponding deviation correcting guide rail, the transverse deviation adjustment is ended, and the adjustment is completed.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the deviation correcting guide rail mechanism and the limiting mechanism are arranged, the deviation correcting guide rail mechanism comprises a left deviation correcting guide rail and a right deviation correcting guide rail, the limiting mechanism comprises a left limiting block and a right limiting block, the left limiting block and the left deviation correcting guide rail are mutually matched to realize that the steel truss girder can move towards the left side of a designed central line, the right limiting block and the right deviation correcting guide rail are mutually matched to realize that the steel truss girder can move towards the right side of the designed central line, the left limiting block and the right limiting block are respectively fixed on the left side and the right side of an upper slideway, and the left deviation correcting guide rail and the right deviation correcting guide rail are both fixed between the bottom surface of the upper slideway and the top surface of a lower slideway; the left deviation correcting guide rail and the right deviation correcting guide rail are oppositely arranged, so that the steel truss girder arranged on the upper slideway can be subjected to first transverse deviation adjustment through the right limiting block and the right deviation correcting guide rail, and then the second transverse deviation adjustment is completed simultaneously with the left limiting block and the left deviation correcting guide rail. When the steel truss girder is pulled, namely, the upper slide rail slides, the fixed deviation correcting guide rail mechanism on the lower slide rail is matched with the limit mechanism fixed on the upper slide rail, the upper slide rail and the steel truss girder arranged on the upper slide rail are guided to move according to a certain track by the limit block and the deviation correcting guide rail, and the operation process, namely, the transverse deviation adjustment process, is realized.
Description of the drawings:
FIG. 1 is a three-dimensional schematic of the present invention;
FIG. 2 is a two-dimensional schematic of the present invention;
FIG. 3 is a diagram of a correction process in accordance with the present invention;
FIG. 4 is an enlarged view of the rectification process of the present invention;
FIG. 5 is a schematic view of the structure of the correction rail;
FIG. 6 is a three-dimensional schematic of the correction rail and stopper;
FIG. 7 is a two-dimensional schematic of the correction rail and stopper.
The marks in the figure: the device comprises a left deviation correcting guide rail 1, a right deviation correcting guide rail 2, a left limiting block 3, a right limiting block 4, a 5-steel truss girder, a 6-upper slideway, a 7-lower slideway, an 8-steel plate 9-polytetrafluoroethylene plate, a 10-bevel side surface, a 11-short side inner side surface, a 12-long side outer side surface, a 13-designed central line, a-right angle short side length, a b-deviation value and a c-preset value.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Because the short side is 50mm, the hypotenuse is 1200-2000mm, so the minimum angle of the right triangle is only 1.4 degrees to 2.5 degrees, the included angle is too small, and the structural relationship is difficult to be presented in the figure, therefore, the minimum angle of the right triangle is shown as 20 degrees in the figure to be convenient to understand, and meanwhile, the rectangle is adopted to represent the steel truss structure.
Example 1
As shown in fig. 1, the three-dimensional schematic diagram of the present invention is shown, wherein, the steel truss girder 5, the upper slide 6, the lower slide 7, the steel plate 8 and the polytetrafluoroethylene plate 9 are all prepared for the construction of the dragging operation, but not the composition of the deviation correcting device, the lower slide 7 is fixedly arranged on the ground, the bottom surface of the upper slide 6 is arranged on the top surface of the lower slide 7 through the steel plate 8 for adjusting the flatness and the polytetrafluoroethylene plate 9 for reducing the friction resistance, the steel truss girder 5 is fixed on the top surface of the upper slide 6, and the steel truss girder 5 is driven to move by dragging the upper slide 6 in the deviation correcting process.
In the dragging process of the steel truss girder 5, namely in the sliding process of the upper slideway 6, the deviation correcting guide rail mechanism fixed on the lower slideway 7 is matched with the limit mechanism fixed on the upper slideway 6, so that the upper slideway 6 and the steel truss girder 5 are guided to carry out transverse deviation adjustment.
Wherein, the center line 13 is designed as the center line of the structure of the glide slope 7, namely the center line of the width of the glide slope 7; the upper slideway 6 and the lower slideway 7 are both composed of I-steel and are prepared for the construction of the dragging steel truss girder 5.
As shown in fig. 2, a two-dimensional schematic diagram of the invention is a deviation correcting device for transverse deviation in the steel truss girder dragging process, which comprises a deviation correcting guide rail mechanism and a limiting mechanism, wherein the deviation correcting guide rail mechanism comprises a left deviation correcting guide rail 1 and a right deviation correcting guide rail 2, and the limiting mechanism comprises a left limiting block 3 and a right limiting block 4; the left limiting block 3 and the right limiting block 4 are respectively fixed on the left side and the right side of the upper slideway 6, and the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 are both fixed between the bottom surface of the upper slideway 6 and the top surface of the lower slideway 7; the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 are oppositely arranged, so that the steel truss beam 5 arranged on the upper slideway 6 can be subjected to first transverse deviation adjustment through the right limiting block 4 and the right deviation correcting guide rail 2, and then the second transverse deviation adjustment is completed simultaneously together with the left limiting block 3 and the left deviation correcting guide rail 1.
The bottom surfaces of the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 correspond to the top surface of the lower slideway 7, and the top surfaces of the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 correspond to the bottom surface of the upper slideway 6.
In the application, the moving direction of the steel truss girder 5 is taken as the positive direction, the part arranged at the left side of the design center line 13 is taken as the left side, the part at the right part of the design center line 13 is taken as the right side, namely, the limiting block arranged at the left part of the design center line 13 is taken as the left limiting block 3, the deviation rectifying guide rail is taken as the left deviation rectifying guide rail 1, namely, the limiting block arranged at the right part of the design center line 13 is taken as the right limiting block 4, and the deviation rectifying guide rail is taken as the right deviation rectifying guide rail 2; the centerline 13 is designed to be the centerline of the steel truss girder 5 when no deviation occurs.
The left limiting block 3 and the right limiting block 4 are respectively fixed on the left side and the right side of the upper slideway 6, the left deviation rectifying guide rail 1 and the right deviation rectifying guide rail 2 are respectively fixed between the bottom surface of the upper slideway 6 and the top surface of the lower slideway 7, the first transverse deviation adjustment is completed through the matching of the side surface of the right deviation rectifying guide rail 2 and the right limiting block 4, and the second transverse deviation adjustment is completed through the matching of the side surface of the left deviation rectifying guide rail 1 and the left limiting block 3 and the matching of the side surface of the right deviation rectifying guide rail 2 and the right limiting block 4.
The left limiting block 3 and the right limiting block 4 are L-shaped limiting blocks, the long side outer side 12 of each L-shaped limiting block is arranged at the bottom of the I-steel of the upper slideway 6, the short side inner side 11 is adapted to the hypotenuse side 10 corresponding to the hypotenuse of the left deviation rectifying guide rail 1/the right deviation rectifying guide rail 2, and one side of each limiting block is contacted with the side of the deviation rectifying guide rail during deviation rectifying.
Wherein, the utility model also comprises a steel plate 8 which plays a role of leveling and a polytetrafluoroethylene plate 9 which reduces drag friction resistance.
The steel truss beam 5 is arranged on the upper slide 6 through the polytetrafluoroethylene plate 9 for reducing traction friction resistance, and due to the arrangement of the polytetrafluoroethylene plate 9, when the upper slide 6 is dragged, the steel truss beam 5 can move longitudinally along with the upper slide 6, and due to the leveling steel plate 8, when the upper slide 6 is dragged, the upper slide 6 and the steel truss beam 5 can move relatively with the lower slide, namely, move longitudinally.
As shown in fig. 3, in the process diagram of the deviation correcting of the present invention, the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 are both guide rails with oblique sides, that is, oblique sides having an included angle with a design center line 13, and oblique side surfaces 10 corresponding to the oblique sides are used for guiding the steel truss girder 5 to perform lateral deviation adjustment.
In the correction process, the first transverse deviation adjustment is completed through the matching of the bevel edge side surface 10 of the right correction guide rail 2 and the right limiting block 4, and the second transverse deviation adjustment is completed through the matching of the bevel edge side surface 10 of the left correction guide rail 1 and the left limiting block 3 and the matching of the bevel edge side surface 10 of the right correction guide rail 2 and the right limiting block 4.
The direction of the movement of the steel truss girder 5 is taken as the positive direction, a dragging jack is used for enabling the upper slideway 6 and the steel truss girder 5 arranged on the upper slideway 6 to move towards the non-rotating right direction in the drawing, namely, the rotated upper direction moves, firstly, one side of the inner side 11 of the short side of the right limiting block 4 is contacted with the inclined side 10 of the fixed right deviation rectifying guide rail 2, the steel truss girder 5 is forced to carry out first transverse deviation adjustment towards the right side of the designed central line 13, in the dragging process, when one side of the inner side 11 of the short side of the left limiting block 3 is contacted with the inclined side 10 of the fixed left deviation rectifying guide rail 1, the second transverse deviation adjustment is started, the cooperation of the left limiting block 3 and the left deviation rectifying guide rail 1, the smaller the included angle between the central line of the steel truss girder 5 and the designed central line 13 is forced by the cooperation of the right limiting block 4 and the right deviation rectifying guide rail 2, and the right short side 4 is contacted with the short side of the left deviation rectifying guide rail 1 until the left limiting block 3 is contacted with the short side of the left deviation rectifying guide rail 1, and the second transverse deviation adjustment is finished.
The value of the lateral deviation adjustment is the length of the short side, and the pulling length required by the lateral deviation adjustment is the pulling length from the point where the right deviation correcting guide rail 2 and the right limiting block 4 are contacted until the short side of the left limiting block 3 and the short side of the left deviation correcting guide rail 1 are contacted and the short side of the right limiting block 4 and the short side of the right deviation correcting guide rail 2 are contacted.
As shown in fig. 4, fig. 4 is an enlarged view of the deviation rectifying process according to the present invention, and the matching relationship between the deviation rectifying guide rail and the stopper can be seen more clearly from fig. 4.
As shown in fig. 5, the deviation rectifying guide rails 1 and 2 are both guide rails with oblique sides, and the oblique side surfaces 10 corresponding to the oblique sides are used for guiding the steel truss beam 5 to perform lateral deviation adjustment.
The cross sections of the left deviation rectifying guide rail 1 and the right deviation rectifying guide rail 2 are right triangle shapes, the right long side of the left deviation rectifying guide rail 1 and the right long side of the right deviation rectifying guide rail 2 are parallel to a design central line 13 so as to be convenient to install, the parallel distance between the two right long sides is the width of the whole steel truss girder 5, so that the left deviation rectifying guide rail 1 and the left limiting block 3 are completed, and the second transverse deviation adjustment can be carried out together with the right deviation rectifying guide rail 2 and the right limiting block 4, namely, the left deviation rectifying guide rail 1 and the right deviation rectifying guide rail 2 are used for rectifying simultaneously.
The length of the bevel edge is 1200-2000mm.
The distance between the inner side 11 of the short side of the L-shaped limiting block and the side of the glide slope 7 is not more than 50mm, and the distance between the center line of the steel truss girder 5 and the designed center line 13 is prevented from being more than 50mm in the dragging process.
In this embodiment, the distance between the inner side 11 of the short side of the L-shaped limiting block and the side of the glide slope 7 is 50mm.
The length a of the right-angle short side of the right-angle triangle is greater than or equal to 50mm, and the length a of the right-angle short side is correspondingly a transverse deviation adjustable distance.
In this embodiment, the length a of the right-angle short side of the right triangle is 50mm.
Wherein, since the short side length is 500mm, the hypotenuse length is 1200-2000mm, i.e. the angle between the hypotenuse and the design center line 13 has a certain range, wherein the optimal angle is 1.58 degrees.
Since the distance between the center line of the steel truss girder 5 and the design center line 13 during the towing is not more than 50mm, and 50mm of the short side corresponds to the lateral deviation adjustable distance, the maximum lateral deviation adjustable distance is set to 50mm as the design standard.
As shown in fig. 6, a three-dimensional schematic diagram of the deviation correcting guide rail and the stopper is shown, wherein when one side of the inner side surface 11 of the short side of the stopper is in line-to-surface contact with the side surface 10 of the hypotenuse corresponding to the hypotenuse of the deviation correcting guide rail, and when the upper slide 6 moves, the stopper moves, and the upper slide 6 moves along the track of the deviation correcting guide rail due to the contact between the side surface 10 of the hypotenuse of the deviation correcting guide rail and one side of the inner side surface 11 of the short side of the stopper, so as to adjust the lateral deviation.
And the side face 10 of the bevel edge corresponding to the bevel edge is provided with a lubricant, and the lubricant is used for reducing the lateral friction force in the process of correcting and pulling.
Example 2
A deviation rectifying method for transverse deviation in the steel truss girder dragging process comprises the following steps of:
s101, before the steel truss girder 5 starts to be pulled, fixing a left limiting block 3 on the left side of an upper slideway 6, and fixing a right limiting block 4 on the right side of the upper slideway 6;
s102, starting the dragging operation, dragging the upper slideway 6 and the steel truss girder 5, stopping the dragging operation when the deviation between the center line of the steel truss girder 5 and the designed center line 13 is more than 20mm, and starting to arrange the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2;
s1031, setting the right-angle long side of the right deviation correcting guide rail 2 and the design center line 13 to be in a parallel state, setting the distance between the right-angle long side of the right deviation correcting guide rail 2 and one side of the inner side 11 of the short side of the right limiting block 4 to be a preset value c, wherein the preset value is equal to the length a of the right-angle short side of the right deviation correcting guide rail 2 minus a deviation value b to be adjusted; and the side arranged is the side closer to the design center line 13;
s1032, setting the transverse distance between the right-angle long side of the left deviation correcting guide rail 1 and the right-angle long side of the right deviation correcting guide rail 2 as the width of the steel truss girder 5, and setting the longitudinal distance between the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 as the distance between the left limiting block 3 and the right limiting block 4, so as to finish the setting of the deviation correcting guide rail;
s104, continuing the dragging operation, wherein the limiting block at one side carries out the first transverse deviation adjustment under the limitation of the corresponding deviation correcting guide rail, the limiting block at the other side starts the second transverse deviation adjustment after the corresponding deviation correcting guide rail is contacted, and when the limiting blocks at two sides are simultaneously contacted with the corresponding deviation correcting guide rail, the transverse deviation adjustment is ended, and the adjustment is completed.
As shown in fig. 7, a two-dimensional schematic diagram of the deviation correcting guide rail and the limiting block is shown, wherein the distance between the right long side of the right deviation correcting guide rail 2 and one side of the inner side 11 of the short side of the right limiting block 4 is set to be a preset value c, and the preset value c is equal to the length a of the right short side of the right deviation correcting guide rail 2 minus a deviation value b to be adjusted; and the side arranged is the side closer to the design center line 13;
in the embodiment, the length a of the right-angle short side of the right deviation correcting guide rail 2 takes 50mm; the distance between the inner side 11 of the short side of the L-shaped limiting block and the side surface of the glide slope 7 is 50mm.
The limiting block is fixed on the upper slideway 6 before dragging, the deviation correcting guide rail is set when the difference value needing to be adjusted appears, namely, the limiting block is fixed on the top surface of the lower slideway 7, and the setting mode is as follows:
when the deviation value b is the maximum, namely the deviation between the center line of the steel truss girder 5 and the designed center line 13 is 50mm, the right-angle long side of the right deviation correcting guide rail 2 and the designed center line 13 are set to be in a parallel state; setting the triangular tip of the right deviation correcting guide rail 2 on the inner side surface 11 of the short side of the right limiting block 4, and simultaneously, contacting the hypotenuse side surface 10 corresponding to the hypotenuse of the right deviation correcting guide rail 2 with the inner side surface 11 of the short side of the right limiting block 4; and thirdly, setting the transverse distance between the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 as the width of the steel truss girder 5, and setting the longitudinal distance between the left deviation correcting guide rail 1 and the right deviation correcting guide rail 2 as the distance between the left limiting block 3 and the right limiting block 4, thereby finishing the setting of the deviation correcting guide rail.
When the deviation value b is 0-50mm, for example, when the deviation value b is 30mm, the second step is replaced by setting the right-angle long side of the right deviation correcting guide rail 2 to be 1120mm away from the inner side surface of the short side of the right limiting block 4, and 20mm close to one side of the design center line 13, namely, the distance value between the right-angle long side of the right deviation correcting guide rail 2 and the design center line 13 is half the width of the steel truss 5 minus 20mm.
The distance can be adjusted, namely the length of the short side of the correction guide rail minus the distance from the long side of the right angle of the correction guide rail to the inner side 11 of the short side of the right limit block 4.
Claims (8)
1. The deviation correcting device for the transverse deviation in the steel truss girder dragging process is characterized by comprising a deviation correcting guide rail mechanism and a limiting mechanism, wherein the deviation correcting guide rail mechanism comprises a left deviation correcting guide rail (1) and a right deviation correcting guide rail (2), and the limiting mechanism comprises a left limiting block (3) fixed on the left side of an upper slideway (6) and a right limiting block (4) fixed on the right side of the upper slideway (6); the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) are both fixed between the bottom surface of the upper slideway (6) and the top surface of the lower slideway (7), and the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) are oppositely arranged;
the lower slideway (7) is fixedly arranged on the ground, the bottom surface of the upper slideway (6) is arranged on the top surface of the lower slideway (7) through a steel plate (8) for adjusting flatness and a polytetrafluoroethylene plate (9) for reducing friction resistance, the steel truss girder (5) is fixed on the top surface of the upper slideway (6), and in the correction process, the steel truss girder (5) is driven to move by dragging the upper slideway (6);
the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) are guide rails with inclined edges, the inclined edges and a design central line (13) form an included angle, the inclined edge side surfaces (10) corresponding to the inclined edges are used for guiding the steel truss girder (5) to carry out transverse deviation adjustment, the first transverse deviation adjustment is completed through the cooperation of the inclined edge side surfaces (10) of the right deviation correcting guide rail (2) and the right limiting block (4), and the second transverse deviation adjustment is completed through the cooperation of the inclined edge side surfaces (10) of the left deviation correcting guide rail (1) and the left limiting block (3) and the cooperation of the inclined edge side surfaces (10) of the right deviation correcting guide rail (2) and the right limiting block (4);
the upper slide way (6) and the lower slide way (7) are both composed of I-steel;
the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) are respectively corresponding to the top surface of the lower slideway (7), and the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) are respectively corresponding to the bottom surface of the upper slideway (6).
2. A deviation correcting apparatus for steel truss girder dragging process lateral deviation according to claim 1, wherein the length of the oblique side is 1200-2000mm.
3. The deviation correcting device for transverse deviation in the steel truss girder dragging process according to claim 2, wherein the left limiting block (3) and the right limiting block (4) are L-shaped limiting blocks, the long sides of the L-shaped limiting blocks are arranged at the bottom of I-steel of the upper slideway (6), and the short sides of the L-shaped limiting blocks correspond to the oblique sides of the left deviation correcting guide rail (1)/the right deviation correcting guide rail (2).
4. A deviation correcting device for transverse deviation in a steel truss dragging process according to claim 3, wherein the cross sections of the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) are in right triangle shapes, the right long sides of the left deviation correcting guide rail (1) and the right long sides of the right deviation correcting guide rail (2) are parallel to a design center line (13) so as to be convenient to install, and the parallel distance between the two right long sides is the width of the whole steel truss (5) so as to complete the second transverse deviation adjustment, namely, the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) are corrected at the same time.
5. The deviation correcting device for transverse deviation of steel truss girder dragging process according to claim 4, wherein the distance between the inner side surface of the short side of the L-shaped limiting block and the side surface of the glide slope (7) is not more than 50mm, and the distance between the center line of the steel truss girder (5) and the designed center line (13) is prevented from being more than 50mm in the dragging process.
6. The deviation correcting device for transverse deviation in the steel truss girder dragging process according to claim 5, wherein the length a of the right-angle short side of the right triangle is greater than or equal to 50mm, and the length a of the right-angle short side corresponds to a transverse deviation adjustable distance.
7. A deviation correcting device for transverse deviation of steel truss girder dragging process according to claim 6, characterized in that the corresponding hypotenuse side (10) on the hypotenuse is provided with a lubricant for reducing the lateral friction of the deviation correcting dragging process.
8. A method for correcting the transverse deviation of a steel truss girder dragging process, which is characterized by comprising the correction device for the transverse deviation of the steel truss girder dragging process according to any one of claims 1-7, and comprising the following steps:
s101, before the steel truss girder (5) starts to drag, fixing a left limiting block (3) on the left side of an upper slideway (6), and fixing a right limiting block (4) on the right side of the upper slideway (6);
s102, starting the dragging operation, dragging the upper slideway (6) and the steel truss girder (5), stopping the dragging operation when the deviation between the center line of the steel truss girder (5) and the designed center line (13) is more than 20mm, and starting to arrange the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2);
s1031, setting the right-angle long side of the right deviation correcting guide rail (2) and the design center line (13) to be in a parallel state, setting the right-angle long side of the right deviation correcting guide rail (2) as the distance of one side of the inner side surface (11) of the short side of the right limiting block (4), namely a preset value c, wherein the preset value c is equal to the length a of the right-angle short side of the right deviation correcting guide rail (2) minus a deviation value b to be adjusted; and the side which is arranged is the side which is closer to the design center line (13);
s1032, setting the transverse distance between the right-angle long side of the left deviation correcting guide rail (1) and the right-angle long side of the right deviation correcting guide rail (2) as the width of the steel truss girder (5), and setting the longitudinal distance between the left deviation correcting guide rail (1) and the right deviation correcting guide rail (2) as the distance between the left limiting block (3) and the right limiting block (4), so as to finish the setting of the deviation correcting guide rail;
s104, continuing the dragging operation, wherein the limiting block at one side carries out the first transverse deviation adjustment under the limitation of the corresponding deviation correcting guide rail, the limiting block at the other side starts the second transverse deviation adjustment after the corresponding deviation correcting guide rail is contacted, and when the limiting blocks at two sides are simultaneously contacted with the corresponding deviation correcting guide rail, the transverse deviation adjustment is ended, and the adjustment is completed.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156585A (en) * | 1996-11-26 | 1998-06-16 | Nkk Corp | Misalignment correcting device for shape steel |
| CN202543807U (en) * | 2012-04-01 | 2012-11-21 | 中铁四局集团第一工程有限公司 | Steel truss girder drag frame constructed by CRM crawler heavy carriers |
| CN203174512U (en) * | 2013-03-05 | 2013-09-04 | 中铁二十一局集团有限公司 | Steel truss girder dragging construction intelligent measuring and controlling system |
| CN206173809U (en) * | 2016-09-18 | 2017-05-17 | 中国铁建大桥工程局集团有限公司 | A reaction frame device of rectifying for bridge incremental launching construction |
| CN206736727U (en) * | 2017-04-14 | 2017-12-12 | 江苏先锋钢结构工程有限公司 | A kind of large-span continuous steel truss girder girder arch pushing device |
| CN206784190U (en) * | 2017-06-09 | 2017-12-22 | 中铁建大桥工程局集团第五工程有限公司 | Large-span Steel Box Beam liftable self-propelled successively incremeantal launching method system |
| CN108035259A (en) * | 2017-12-11 | 2018-05-15 | 山东大学 | Unidirectional full cantilever steel truss arched bridge deviation correcting device and its application method |
| CN209339005U (en) * | 2018-12-20 | 2019-09-03 | 中铁二局集团有限公司 | A kind of deviation correcting device for steel truss girder heave lateral deviation |
-
2018
- 2018-12-20 CN CN201811566122.1A patent/CN109440656B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10156585A (en) * | 1996-11-26 | 1998-06-16 | Nkk Corp | Misalignment correcting device for shape steel |
| CN202543807U (en) * | 2012-04-01 | 2012-11-21 | 中铁四局集团第一工程有限公司 | Steel truss girder drag frame constructed by CRM crawler heavy carriers |
| CN203174512U (en) * | 2013-03-05 | 2013-09-04 | 中铁二十一局集团有限公司 | Steel truss girder dragging construction intelligent measuring and controlling system |
| CN206173809U (en) * | 2016-09-18 | 2017-05-17 | 中国铁建大桥工程局集团有限公司 | A reaction frame device of rectifying for bridge incremental launching construction |
| CN206736727U (en) * | 2017-04-14 | 2017-12-12 | 江苏先锋钢结构工程有限公司 | A kind of large-span continuous steel truss girder girder arch pushing device |
| CN206784190U (en) * | 2017-06-09 | 2017-12-22 | 中铁建大桥工程局集团第五工程有限公司 | Large-span Steel Box Beam liftable self-propelled successively incremeantal launching method system |
| CN108035259A (en) * | 2017-12-11 | 2018-05-15 | 山东大学 | Unidirectional full cantilever steel truss arched bridge deviation correcting device and its application method |
| CN209339005U (en) * | 2018-12-20 | 2019-09-03 | 中铁二局集团有限公司 | A kind of deviation correcting device for steel truss girder heave lateral deviation |
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