Segmental beam alignment adjustment auxiliary method

Abstract

The application discloses a segmental beam line shape adjustment auxiliary method and relates to the technical field of segmental beams, which comprises the following steps: S1, according to the bridge deck width of the beam body, a tape measure is used to measure the position of the beam surface center line, and a clear center line is popped up on the top surface of the segmental beam by using a ink pot and an ink line; S2, on the segmental beam that has been adjusted, a laser instrument is stably erected by using a foot support, and the laser instrument is finely adjusted so that the laser line emitted by the laser instrument is completely coincident with the popped ink line; S3, the line shape of the adjacent segments is adjusted by using the laser instrument; and S4, the beam body elevation is adjusted by using a level. The segmental beam line shape adjustment auxiliary method optimizes the method for adjusting the line shape of the segmental beam, further improves the efficiency of the line shape adjustment of the segmental beam erection, and is more safe, intuitive and accurate by the following specific steps: the segmental beam center line is popped up on each prefabricated segment, the laser instrument is erected when the segmental beam is adjusted, and the center lines of the two adjacent segments are aligned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of segmental beam, in particular to a segmental beam alignment adjustment auxiliary method. BACKGROUND

[0002] The Sichuan-Tibet beam factory undertakes the prefabrication of 68-hole segmental beams of the Bobo-Tibet Bridge, which are distributed in the 11th pier to the 45th pier (a total of 34 holes), the 235th pier to the 261st pier (a total of 26 holes), and the 334th pier to the 342nd pier (a total of 8 holes), a total of 748 prefabricated beam segments need to be prefabricated, and 680 wet joint segments need to be cast in place. The erection of 45-hole segmental beams is located on the curved section, which further increases the difficulty of segmental beam alignment adjustment. The alignment adjustment of the first three holes is summarized.

[0003] According to the alignment adjustment of the first 5 holes of the segmental beam, the key points of the alignment adjustment of the segmental beam are the positioning and fixing of the 1st and 11th segments, then a straight line is pulled on the flange plate beam end of the 1st and 11th segments, and the alignment of the nine segments in the middle is adjusted according to the alignment of the 1st and 11th segments.

[0004] This alignment adjustment method has a problem: the length of the segmental beam is relatively long, the wind force on the bridge erecting machine is relatively strong, the straight line is not easy to straighten, and it is not easy to observe whether the adjustment is in place when the segmental beam is adjusted left and right, and the segmental beam cannot be directly observed when it is twisted.

[0005] Therefore, it is urgent to improve this defect, and the present application is to research and improve the existing structure and deficiencies, and provide a segmental beam alignment adjustment auxiliary method. SUMMARY

[0006] The present application aims to provide a segmental beam alignment adjustment auxiliary method to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a segmental beam alignment adjustment auxiliary method, comprising the following steps:

[0008] S1, according to the width of the beam body bridge deck, using a tape measure to measure, determine the position of the center line of the beam surface, and use a ink pot and ink line to pop out a clear center line on the top surface of the segmental beam;

[0009] S2, on the segmental beam that has been adjusted, use a foot stand to erect the laser instrument stably, and fine-tune the laser instrument so that the laser line emitted by it is completely coincident with the ink line that has been popped out;

[0010] S3, use the laser instrument to adjust the alignment of the adjacent segments;

[0011] S4, assemble the level instrument to the foot stand, and use the level instrument to adjust the elevation of the beam body.

[0012] Further, the method is operated before the preparation tool: level, laser instrument, tape and ink, and the laser instrument set foot stand, level with tower ruler, tape selection 50 m specification.

[0013] Further, the specific operation of the step S3 is that the position relationship of the ink line and the laser line is compared, and the position of the segment beam is adjusted according to the offset of the ink line and the laser line, so that it is consistent with the adjusted segment beam line shape.

[0014] Further, the specific operation of the step S4 is that the elevation of each segment beam is measured by using the level, and the elevation of the segment beam is adjusted according to the measurement result, so that it meets the design requirements.

[0015] Further, the foot stand comprises a fixed table, a rotating bolt, a supporting foot, a threaded column and a vertical cone, the bottom of the fixed table is provided with a rotating bolt, and the bottom of the fixed table is connected with the supporting foot through a hinge, the bottom of the supporting foot is fixedly connected with the threaded column, and the bottom of the threaded column is welded with the vertical cone.

[0016] Further, the foot stand further comprises an auxiliary support assembly, a suction cup, a control assembly and a connecting ring, the bottom of the auxiliary support assembly is fixedly connected with the suction cup, the inside of the auxiliary support assembly is provided with the control assembly, and the top of the control assembly is fixedly connected with the connecting ring.

[0017] Further, the auxiliary support assembly comprises an inner ring, an outer ring, a metal support and a rubber pad, the outer surface of the inner ring is threadedly connected with the outer surface of the threaded column, the outer surface of the inner ring is movably connected with the outer ring through a bearing, the outer wall of the outer ring is welded with the metal support, and the bottom of the metal support is fixedly connected with the rubber pad.

[0018] Further, the auxiliary support assembly further comprises an air pipe, and the bottom end of the air pipe penetrates through the upper surface of the metal support and extends to the bottom of the metal support, the rubber pad is provided with an air hole below the air pipe, the shape and size of the air hole are completely consistent with the shape and size of the bottom end of the air pipe, and the bottom end of the air pipe is connected with the top of the suction cup through the air hole.

[0019] Further, the control assembly comprises a connecting rod, a top cover and a sealing ring, the top end of the connecting rod is fixedly connected with the connecting ring, the bottom end of the connecting rod is fixedly connected with the top cover, and the bottom of the top cover is fixedly connected with the sealing ring.

[0020] Further, the control assembly further comprises a telescopic rod, a fixed support, a fixed rod and a spring, the top end of the telescopic rod is fixedly connected with the bottom of the top cover, the bottom end of the telescopic rod is fixedly connected with the fixed support, one end of the fixed rod is fixedly connected with the outer wall of the fixed support, the other end of the fixed rod is fixedly connected with the inner wall of the air pipe, and the fixed support is fixed in the inside of the air pipe through the fixed rod.

[0021] The present application provides a segmental beam alignment adjustment auxiliary method, which has the following beneficial effects:

[0022] 1、The present application optimizes the method of segmental beam alignment adjustment, further improves the efficiency of segmental beam erection alignment adjustment, specifically, the center line of the segmental beam is marked on each prefabricated segment, the laser instrument is erected when the segmental beam is adjusted, and the center lines of the two adjacent segments are aligned, so that compared with observing the edge line of the beam, it is safer, more intuitive and more accurate to control the segmental beam alignment line from the flange plate edge line to the segmental beam center line, so that the technical personnel can avoid observing at the edge of the flange plate, the edge operation in the segmental beam alignment adjustment is reduced, and the safety of the technical personnel is improved. Meanwhile, the present application formulates a reasonable construction management organization guarantee system, and formulates a series of standard processes, so as to further standardize, standardize and program the segmental beam body linear appearance quality control process management, so as to better apply to the segmental beam erection alignment adjustment construction.

[0023] 2、The present application is provided with an auxiliary support assembly, which can drive the metal support to move downward through the rotation of the inner circular ring, so as to abut the rubber pad to the surface of the segmental beam and make corresponding deformation according to the surface shape, and is provided with a suction cup and a control assembly. During the downward movement of the metal support, the air between the suction cup and the segmental beam will enter the air pipe along with the downward pressing of the metal support, so as to push the top cover and discharge the gas. After the gas is discharged, the top cover will be reset to the initial position under the pulling force of the spring and the guidance of the telescopic rod, and cooperates with the sealing ring to avoid the re-entry of external air between the suction cup and the surface of the segmental beam. The design effectively improves the adsorption of the suction cup, thereby enhancing the stability of the foot support during use, so that the foot support can be stably placed on the placement point. The high stability also enables the construction personnel to directly replace the level instrument on the foot support after the use of the laser instrument is completed, without the need for secondary leveling operation, thereby significantly improving the construction efficiency of the segmental beam alignment adjustment.

[0024] 3、The present application is provided with a connecting ring, so that after the operation is completed, the connecting ring is pulled up to open the top end of the air pipe, so that the air can easily flow back between the suction cup and the surface of the segmental beam, which is beneficial to the easy separation of the suction cup from the ground without the need for pulling, saves time and effort, and brings great convenience to the replacement of the foot support to the next placement point, further improving the use convenience of the foot support. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 It is a step flow chart of the segmental beam alignment adjustment auxiliary method of the present application;

[0026] Fig. 2 It is a foot support three-dimensional structure schematic diagram of the segmental beam alignment adjustment auxiliary method of the present application;

[0027] Fig. 3This is a schematic diagram of the scaffolding deployment structure for an auxiliary method for adjusting the alignment of segmental beams according to the present invention;

[0028] Fig. 4 This is a three-dimensional structural diagram of the support component for an auxiliary method for adjusting the alignment of a segmental beam according to the present invention.

[0029] Fig. 5 This is a schematic diagram showing the disassembled top cover-telescopic rod structure of an auxiliary method for adjusting the alignment of segmental beams according to the present invention.

[0030] Fig. 6 This is a top view schematic diagram of the control component of an auxiliary method for adjusting the alignment of segmental beams according to the present invention.

[0031] In the diagram: 1. Leg; 11. Mounting platform; 12. Bolt; 13. Support leg; 14. Threaded column; 15. Vertical cone; 16. Auxiliary support assembly; 161. Inner ring; 162. Outer ring; 163. Metal support; 164. Rubber pad; 165. Vent pipe; 17. Suction cup; 18. Control assembly; 181. Connecting rod; 182. Top cover; 183. Sealing ring; 184. Telescopic rod; 185. Fixing bracket; 186. Fixing rod; 187. Spring; 19. Connecting ring. Detailed Implementation

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0033] like Figs. 1-2 As shown, an auxiliary method for adjusting the alignment of a segmental beam includes the following steps:

[0034] Before operation, prepare the following tools: level, laser, measuring tape and ink line. The laser should be mounted on a tripod, the level should be equipped with a leveling rod, and the measuring tape should be 50m.

[0035] S1. Based on the width of the bridge deck, use a measuring tape to determine the position of the center line of the beam surface, and use a chalk line and ink line to mark a clear center line on the top surface of the segmental beam.

[0036] S2. On the adjusted segmental beam, use tripod 1 to set up the laser device stably, and fine-tune the laser device so that the laser line emitted by it completely coincides with the marked ink line.

[0037] S3. Use a laser instrument to adjust the alignment of adjacent segments; specific operation: compare the positional relationship between the ink line and the laser line, and adjust the position of the segment beam according to the offset of the ink line and the laser line to make it consistent with the alignment of the adjusted segment beam.

[0038] S4, the level is assembled to the foot stand 1, and the level is used to adjust the beam elevation; specific operation: the elevation of each segment beam is measured by using the level, and the elevation of the segment beam is adjusted according to the measurement result, so that the design requirement is met.

[0039] As shown in Figs. 2-6 The foot stand 1 comprises a fixed table 11, a rotating bolt 12, a supporting foot 13, a threaded column 14 and a vertical cone 15, the bottom of the fixed table 11 is provided with the rotating bolt 12, the bottom of the fixed table 11 is connected with the supporting foot 13 through a hinge, the bottom of the supporting foot 13 is fixedly connected with the threaded column 14, and the bottom of the threaded column 14 is welded with the vertical cone 15; the foot stand 1 further comprises an auxiliary support assembly 16, a suction cup 17, a control assembly 18 and a connecting ring 19, the bottom of the auxiliary support assembly 16 is fixedly connected with the suction cup 17, the inside of the auxiliary support assembly 16 is installed with the control assembly 18, and the top of the control assembly 18 is fixedly connected with the connecting ring 19;

[0040] The auxiliary support assembly 16 comprises an inner circular ring 161, an outer circular ring 162, a metal support 163 and a rubber pad 164, the outer surface of the inner circular ring 161 is threadedly connected with the outer surface of the threaded column 14, the outer surface of the inner circular ring 161 is movably connected with the outer circular ring 162 through a bearing, the outer wall of the outer circular ring 162 is welded with the metal support 163, and the bottom of the metal support 163 is fixedly connected with the rubber pad 164; the auxiliary support assembly 16 further comprises an air pipe 165, the bottom end of the air pipe 165 penetrates through the upper surface of the metal support 163 and extends to the bottom of the metal support 163, the rubber pad 164 is provided with an air hole below the air pipe 165, the shape and size of the air hole are completely consistent with the shape and size of the bottom end of the air pipe 165, and the bottom end of the air pipe 165 is connected with the top of the suction cup 17 through the air hole;

[0041] The control assembly 18 comprises a connecting rod 181, a top cover 182 and a sealing ring 183, the top end of the connecting rod 181 is fixedly connected with the connecting ring 19, the bottom end of the connecting rod 181 is fixedly connected with the top cover 182, and the bottom of the top cover 182 is fixedly connected with the sealing ring 183; the control assembly 18 further comprises a telescopic rod 184, a fixed support 185, a fixed rod 186 and a spring 187, the top end of the telescopic rod 184 is fixedly connected with the bottom of the top cover 182, the bottom end of the telescopic rod 184 is fixedly connected with the fixed support 185, one end of the fixed rod 186 is fixedly connected with the outer wall of the fixed support 185, the other end of the fixed rod 186 is fixedly connected with the inner wall of the air pipe 165, and the fixed support 185 is fixed in the inside of the air pipe 165 through the fixed rod 186;

[0042] The specific operation is as follows: first, the placing point of the foot support 1 is determined, and the foot support 1 is placed at the position, then under the action of the hinge, the supporting leg 13 is pulled to expand, so that the foot support 1 can stand at the placing point under the support of the stand cone 15, then according to the bubble level on the top of the fixing table 11, the supporting leg 13 is adjusted constantly until the foot support 1 is leveled, and the standing position of the stand cone 15 is determined. Then, the operator holds any supporting leg 13 with one hand, and rotates the inner ring 161 below the supporting leg 13 with the other hand, so that the inner ring 161 rotates and moves downward along the threaded column 14, thereby driving the metal support 163 to move downward, and after the rubber pad 164 is abutted to the surface of the segmental beam, it deforms correspondingly to fit the surface shape, at the same time, the suction cup 17 is also gradually adsorbed to the segmental beam. In this process, the air between the suction cup 17 and the segmental beam will enter the air pipe 165 with the downward pressing of the metal support 163, so as to increase the air pressure in the pipe to push the top cover 182, and the telescopic rod 184 and the spring 187 are deformed accordingly, so that the gas is discharged through the gap between the top cover 182 and the air pipe 165, and after the discharge, the top cover 182 is reset to the initial position under the tension of the spring 187 and the guidance of the telescopic rod 184. Under the cooperation of the top cover 182 and the sealing ring 183, it can avoid that the external air reenters the suction cup 17 and the surface of the segmental beam through the air pipe 165, thereby effectively improving the adsorption of the suction cup 17. Repeating the above operation, the bottom of the three supporting legs 13 is fixed again to enhance the stability of the foot support 1 during use, so that the foot support 1 can stably stand at the placing point, thereby effectively avoiding the problem of inaccurate measurement of the laser instrument and the level instrument caused by accidentally touching the foot support 1 during operation. At the same time, the high stability also provides operability for the replacement of the laser instrument and the level instrument, so that the construction personnel can directly rotate the screw 12 at the bottom of the fixing table 11 after completing step S3, remove the laser instrument, and directly replace the level instrument and fix it on the fixing table 11, which is not easy to cause the foot support 1 to move due to the replacement operation, thereby saving the secondary leveling operation caused by the replacement of the equipment, and can significantly improve the construction efficiency of the segmental beam linear adjustment.

[0043] After the operation is completed, the construction personnel only need to pull the connecting ring 19 with one hand to open the top end of the air pipe 165 again, and rotate the inner ring 161 with the other hand to drive the metal support 163 to move upward. Since the top end of the air pipe 165 is breathable, air can easily flow back between the suction cup 17 and the surface of the segmental beam, so that the suction cup 17 can easily detach from the ground without having to pull hard, which saves a lot of time for removing the fixation, which brings great convenience for the foot support 1 to be replaced to the next placing point, and further improves the use convenience of the foot support 1.

[0044] In summary, in combination with the segmental beam linear adjustment auxiliary method shown in Figs. 1-6 , the working principle of the segmental beam linear adjustment auxiliary method is as follows: first,

[0045] S1, according to the beam bridge width, using a tape measure, determine the position of the beam center line, and use the ink and ink line, in the segment beam top surface pop clear center line;

[0046] S2, according to the above specific operation content, the foot stool 1 is fixed on the segment beam which has been adjusted, then the laser instrument is aimed at the hole position, placed on the fixed table 11, the rotating bolt 12 is rotated to complete the fixation, then the laser instrument is finely adjusted, so that the laser line emitted by the laser instrument is completely coincided with the ink line;

[0047] S3, the line shape of adjacent segments is adjusted by using the laser instrument;

[0048] S4, the fixed effect of the fixed table 11 and the laser instrument is released by counterclockwise rotating the rotating bolt 12, then the laser instrument is taken down, the level instrument is placed on the fixed table 11 and fixed, after the fixation is completed, the beam elevation is adjusted by using the level instrument.

[0049] The embodiments of the present application are given for example and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and variations are obvious to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the present application, and to enable those skilled in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A method for adjusting the alignment of segmental beams, characterized in that, Includes the following steps: S1. Based on the width of the bridge deck, use a measuring tape to determine the position of the center line of the beam surface, and use a chalk line and ink line to mark a clear center line on the top surface of the segmental beam. S2. On the adjusted segmental beam, use a tripod (1) to set up the laser instrument stably, and fine-tune the laser instrument so that the laser line emitted by it completely coincides with the ink line marked. S3. Use a laser device to adjust the alignment of adjacent segments; S4. Mount the level instrument onto the tripod (1) and use the level instrument to adjust the elevation of the beam. The stand (1) includes a fixed platform (11), a screw bolt (12), a support foot (13), a threaded column (14), and a vertical cone (15). The bottom of the fixed platform (11) is provided with a screw bolt (12), and the bottom of the fixed platform (11) is connected to the support foot (13) by a hinge. The bottom of the support foot (13) is fixedly connected to the threaded column (14), and the bottom of the threaded column (14) is welded with a vertical cone (15). The tripod (1) also includes an auxiliary support assembly (16), a suction cup (17), a control assembly (18) and a connecting ring (19). The bottom of the auxiliary support assembly (16) is fixedly connected to the suction cup (17), and the control assembly (18) is installed inside the auxiliary support assembly (16), and the top of the control assembly (18) is fixedly connected to the connecting ring (19). The auxiliary support assembly (16) includes an inner ring (161), an outer ring (162), a metal support (163), and a rubber pad (164). The outer surface of the inner ring (161) is threadedly connected to the outer surface of the threaded column (14), and the outer surface of the inner ring (161) is movably connected to the outer ring (162) through a bearing. The outer wall of the outer ring (162) is welded with a metal support (163), and the bottom of the metal support (163) is fixedly connected to a rubber pad (164). The auxiliary support component (16) also includes a vent pipe (165), and the bottom end of the vent pipe (165) penetrates the upper surface of the metal support (163) and extends to the bottom of the metal support (163). The rubber pad (164) has a vent hole directly below the vent pipe (165), and the shape and size of the vent hole are completely consistent with the shape and size of the bottom end of the vent pipe (165). The bottom end of the vent pipe (165) is connected to the top of the suction cup (17) through the vent hole.

2. The auxiliary method for adjusting the alignment of a segmental beam according to claim 1, characterized in that, Before operating the method, prepare the following tools: level, laser, tape measure and ink line. The laser is mounted on a tripod (1), the level is equipped with a leveling rod, and the tape measure is 50m in size.

3. The auxiliary method for adjusting the alignment of a segmental beam according to claim 1, characterized in that, The specific operation of step S3 is as follows: compare the positional relationship between the ink line and the laser line, and adjust the position of the segment beam according to the offset of the ink line and the laser line so that it is consistent with the adjusted segment beam line shape.

4. The auxiliary method for adjusting the alignment of a segmental beam according to claim 1, characterized in that, The specific operation of step S4 is as follows: use a level to measure the elevation of each beam segment, and adjust the elevation of the beam segment according to the measurement results to meet the design requirements.

5. The auxiliary method for adjusting the alignment of a segmental beam according to claim 1, characterized in that, The control component (18) includes a connecting rod (181), a top cover (182) and a sealing ring (183). The top end of the connecting rod (181) is fixedly connected to the connecting ring (19), and the bottom end of the connecting rod (181) is fixedly connected to the top cover (182), and the bottom of the top cover (182) is fixedly connected to the sealing ring (183).

6. The auxiliary method for adjusting the alignment of a segmental beam according to claim 1, characterized in that, The control assembly (18) also includes a telescopic rod (184), a fixed bracket (185), a fixed rod (186), and a spring (187). The top end of the telescopic rod (184) is fixedly connected to the bottom of the top cover (182), and the bottom end of the telescopic rod (184) is fixedly connected to the fixed bracket (185). One end of the fixed rod (186) is fixedly connected to the outer wall of the fixed bracket (185), and the other end of the fixed rod (186) is fixedly connected to the inner wall of the vent pipe (165). The fixed bracket (185) is fixed inside the vent pipe (165) by the fixed rod (186).

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