Segmental beam linear adjustment assisting method

Abstract

The invention discloses a segmental beam linear adjustment auxiliary method, which relates to the technical field of segmental beams, and comprises the following steps: S1, according to the bridge deck width of a beam body, measuring by using a measuring tape, determining the position of a center line of a beam surface, and popping up a clear center line on the top surface of the segmental beam by using an ink fountain and an ink line; s2, on the adjusted segmental beam, a tripod is used for stably erecting a laser instrument, and the laser instrument is finely adjusted, so that laser rays emitted by the laser instrument completely coincide with the elastic ink lines; s3, adjusting the line shapes of the adjacent sections by using a laser instrument; and S4, adjusting the elevation of the beam body by using a level gauge. According to the segmental beam linear adjustment assisting method, the segmental beam linear adjustment method is optimized, the efficiency of segmental beam erection linear adjustment is further improved, specifically, the segmental beam midline is popped on each prefabricated segment, a laser instrument is erected during segmental beam adjustment, and the midlines of the two adjacent segments are aligned, so that the segmental beam linear adjustment assisting method is safer, more visual and more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of segmental beams, and in particular to an auxiliary method for adjusting the linear shape of a segmental beam. Background Art

[0002] The Sichuan-Tibet beam manufacturing yard is responsible for the prefabrication of 68-hole segmental beams of the Bodu Zangbu Bridge, which are distributed in the bridge's 11th to 45th piers (a total of 34 holes), 235th to 261st piers (a total of 26 holes), and 334th to 342nd piers (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 adjusting the linear shape of the segmental beams. The beam yard comprehensively adjusts the linear shape of the first three holes.

[0003] According to the linear adjustment of the first 1-5 holes, it was found that the control focus of the linear adjustment of the segmental beam is to position and fix segments 1 and 11, and then draw a straight line at the end of the flange plate beam of segments 1 and 11, and adjust the linear shape of the middle nine segments according to the linear shape of segments 1 and 11.

[0004] This method of linear adjustment has a problem: the segmental beam is long and the wind on the bridge-building machine is strong, so it is not easy to straighten the straight line. It is not easy to observe whether the segmental beam is adjusted in place when it is adjusted left and right. It is also impossible to directly observe when the segmental beam has a certain twist.

[0005] Therefore, it is urgent to improve this shortcoming. The present invention studies and improves the existing structure and deficiencies, and provides an auxiliary method for adjusting the linear shape of a segment beam. Summary of the invention

[0006] The object of the present invention is to provide a segment beam linear adjustment auxiliary method to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a segment beam linear adjustment auxiliary method, comprising the following steps: S1. Use a tape measure to measure the width of the beam deck to determine the position of the beam centerline, and use an ink fountain and ink line to pop out a clear centerline on the top surface of the segmental beam; S2. Use a tripod to stabilize the laser instrument on the adjusted segmental beam, and fine-tune the laser instrument so that the laser line it emits completely coincides with the ink line; S3, using a laser to adjust the alignment of adjacent segments; S4. Assemble the level onto the tripod and use the level to adjust the beam elevation.

[0008] Furthermore, before the method is performed, tools are prepared: a level, a laser, a tape measure and an ink fountain, and the laser is equipped with a tripod, the level is equipped with a tower ruler, and the tape measure is selected to have a specification of 50m.

[0009] Furthermore, the specific operation of step S3 is: comparing the positional relationship between the ink line and the laser line, and adjusting the position of the segment beam according to the offset between the ink line and the laser line to make it consistent with the adjusted segment beam line shape.

[0010] Furthermore, the specific operation of step S4 is: using a level to measure the elevation of each segmental beam, and adjusting the elevation of the segmental beam according to the measurement result to meet the design requirements.

[0011] Furthermore, the tripod includes a fixed platform, a bolt, a supporting foot, a threaded column and a cone. The bottom of the fixed platform is provided with a bolt, and the bottom of the fixed platform is connected to the supporting foot through a hinge. The bottom of the supporting foot is fixedly connected to the threaded column, and the bottom of the threaded column is welded with a cone.

[0012] Furthermore, the tripod also includes an auxiliary support component, a suction cup, a control component and a connecting ring. The bottom of the auxiliary support component is fixedly connected to the suction cup, the control component is installed inside the auxiliary support component, and the top of the control component is fixedly connected to the connecting ring.

[0013] Furthermore, the auxiliary support assembly includes an inner ring, an outer ring, a metal support and a rubber pad. The outer surface of the inner ring is threadedly connected to the outer surface of the threaded column, and the outer surface of the inner ring is movably connected to the outer ring through a bearing. The outer wall of the outer ring is welded with a metal support, and the bottom of the metal support is fixedly connected to the rubber pad.

[0014] Furthermore, the auxiliary support assembly also includes a ventilation pipe, and the bottom end of the ventilation pipe passes through the upper surface of the metal support and extends to the bottom of the metal support. The rubber pad is provided with a ventilation hole directly below the ventilation pipe, and the shape and size of the ventilation hole are completely consistent with the shape and size of the bottom end of the ventilation pipe, and the bottom end of the ventilation pipe is connected to the top of the suction cup through the ventilation hole.

[0015] Furthermore, the control assembly includes a connecting rod, a top cover and a sealing ring, the top end of the connecting rod is fixedly connected to the connecting ring, the bottom end of the connecting rod is fixedly connected to the top cover, and the bottom of the top cover is fixedly connected to the sealing ring.

[0016] Furthermore, the control component also includes a telescopic rod, a fixed support, a fixed rod and a spring, the top end of the telescopic rod is fixedly connected to the bottom of the top cover, and the bottom end of the telescopic rod is fixedly connected to the fixed support, one end of the fixed rod is fixedly connected to the outer wall of the fixed support, and the other end of the fixed rod is fixedly connected to the inner wall of the ventilation pipe, and the fixed support is fixed to the inside of the ventilation pipe through the fixed rod.

[0017] The present invention provides a segment beam linear adjustment auxiliary method, which has the following beneficial effects: 1. The present invention further improves the efficiency of segmental beam erection linear adjustment by optimizing the method of adjusting the linear shape of segmental beams. Specifically, the segmental beam centerline is marked on each prefabricated segment, and a laser instrument is set up when adjusting the segmental beam to align the centerline of the two adjacent segments. This is safer, more intuitive, and more accurate than observing the full-length line of the beam edge. The linear control line of the segmental beam is transferred from the edge line of the flange plate to the center line of the segmental beam, so that technicians can avoid observing at the edge of the flange plate, reduce the edge work in the linear adjustment of the segmental beam, and improve the safety of technicians. At the same time, the present invention has formulated a reasonable construction management organization guarantee system, and has formulated a series of standardized processes to further standardize, standardize, and proceduralize the management of the linear appearance quality control process of the segmental beam body, so as to better apply to the linear adjustment construction of the segmental beam erection.

[0018] 2. The present invention is provided with an auxiliary support component, which can drive the metal support to move downward by rotating the inner ring, so that the rubber pad is pressed against the surface of the segment beam and deformed accordingly to fit its surface shape, and is provided with a suction cup and a control component. During the downward movement of the metal support, the air between the suction cup and the segment beam will enter the ventilation pipe as the metal support is pressed downward, thereby pushing the top cover to discharge the gas, and after the gas is discharged, the top cover will be reset to the initial position under the tension of the spring and the guidance of the telescopic rod. The sealing ring can prevent outside air from re-entering the suction cup and the surface of the segment beam through the ventilation pipe. This design effectively improves the adsorption of the suction cup, thereby enhancing the stability of the tripod during use, so that the tripod can stand stably at the placement point, and the high stability also enables construction personnel to directly replace the level on the tripod after the use of the laser instrument, without the need for secondary leveling operations, thereby significantly improving the construction efficiency of the linear adjustment of the segment beam.

[0019] 3. The present invention is provided with a connecting ring, so that after the operation is completed, the connecting ring is pulled up to open the top of the ventilation pipe, so that the air can easily flow back between the suction cup and the surface of the segment beam, which is conducive to the suction cup being easily separated from the ground without pulling hard, saving time and effort, bringing great convenience to the replacement of the tripod to the next placement point, and further improving the ease of use of the tripod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the steps of a segment beam linear adjustment auxiliary method of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a tripod of a segment beam linear adjustment auxiliary method of the present invention; Figure 3 A schematic diagram of a tripod deployment structure of a segment beam linear adjustment auxiliary method of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of an auxiliary support component of an auxiliary method for adjusting the linear shape of a segmental beam according to the present invention; Figure 5 It is a schematic diagram of the disassembly of the top cover-telescopic rod structure of a segment beam linear adjustment auxiliary method of the present invention; Figure 6 The present invention is a schematic diagram of a top view structure of a control component of a segment beam linear adjustment auxiliary method.

[0021] In the figure: 1. tripod; 11. fixing platform; 12. screw bolt; 13. supporting foot; 14. threaded column; 15. cone; 16. auxiliary support assembly; 161. inner ring; 162. outer ring; 163. metal support; 164. rubber pad; 165. ventilation 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 DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] like Figure 1-Figure 2 As shown, a segment beam linear adjustment auxiliary method includes the following steps: Before operation, prepare the following tools: level, laser, tape measure and ink fountain. The laser should be equipped with a tripod 1, the level should be equipped with a tower ruler, and the tape measure should be 50m in size. S1. Use a tape measure to measure the width of the beam deck to determine the position of the beam centerline, and use an ink fountain and ink line to pop out a clear centerline on the top surface of the segmental beam; S2. On the adjusted segmental beam, use tripod 1 to stabilize the laser instrument and fine-tune the laser instrument so that the laser line it emits completely coincides with the ink line; S3. Use a laser instrument to adjust the linear shape of adjacent segments; specific operation: compare the position 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 adjusted linear shape of the segment beam; S4. Assemble the level on the tripod 1 and use the level to adjust the elevation of the beam. Specific operation: Use the level to measure the elevation of each segmental beam, and adjust the elevation of the segmental beam according to the measurement results to meet the design requirements.

[0024] like Figure 2-Figure 6As shown, the tripod 1 includes a fixing platform 11, a screw bolt 12, a supporting foot 13, a threaded column 14 and a cone 15. The fixing platform 11 is provided with a screw bolt 12 at the bottom, and the fixing platform 11 is connected to the supporting foot 13 at the bottom through a hinge, the supporting foot 13 is fixedly connected to the bottom with a threaded column 14, and the bottom of the threaded column 14 is welded with the cone 15; the tripod 1 also includes an auxiliary support component 16, a suction cup 17, a control component 18 and a connecting ring 19, the auxiliary support component 16 is fixedly connected to the bottom with the suction cup 17, the control component 18 is installed inside the auxiliary support component 16, and the top of the control component 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 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 also includes a vent pipe 165, and the bottom end of the vent pipe 165 passes 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 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, and the bottom end of the vent pipe 165 is connected to the top of the suction cup 17 through the vent hole. The control assembly 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; the control assembly 18 also includes 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 to the bottom of the top cover 182, and the bottom end of the telescopic rod 184 is fixedly connected to the fixed support 185, one end of the fixed rod 186 is fixedly connected to the outer wall of the fixed support 185, and the other end of the fixed rod 186 is fixedly connected to the inner wall of the ventilation pipe 165, and the fixed support 185 is fixed to the inside of the ventilation pipe 165 through the fixed rod 186; The specific operation is as follows: first, determine the placement point of the tripod 1 and place the tripod 1 at the position, then, under the action of the hinge, pull and unfold the supporting feet 13 so that the tripod 1 can stand at the placement point with the support of the cone 15, and then, according to the bubble level on the top of the fixed platform 11, continuously adjust the supporting feet 13 until the tripod 1 is leveled and the standing position of the cone 15 is determined. Then, the operator holds one of the supporting legs 13 and rotates the inner ring 161 under the supporting leg 13 with the other hand, so that it rotates and moves downward along the threaded column 14, thereby driving the metal support 163 to move downward. After the rubber pad 164 reaches the surface of the segmental beam, it will conform to its surface shape and make corresponding deformation. At the same time, the suction cup 17 will also gradually be adsorbed on the segmental beam. In this process, the air between the suction cup 17 and the segmental beam will enter the vent pipe 165 as the metal support 163 is pressed downward, increasing the air pressure in the pipe to push the top cover 182, and the telescopic rod 184 and the spring 187 will be deformed accordingly, so that the gas is discharged through the gap between the top cover 182 and the vent pipe 165. After the gas is discharged, the top cover 182 will be reset to its initial position under the tension of the spring 187 and the guidance of the telescopic rod 184. With the coordinated use of the top cover 182 and the sealing ring 183, it is possible to prevent outside air from re-entering between the suction cup 17 and the surface of the segment beam through the ventilation pipe 165, thereby effectively improving the adsorption of the suction cup 17. Repeat the above operation and fix the bottom of the three supporting legs 13 in turn for a second time to enhance the stability of the tripod 1 during use, so that the tripod 1 can stand stably at the placement point, thereby effectively avoiding the problem of inaccurate measurement of the laser instrument and the level instrument due to inadvertent touching of the tripod 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 after the completion of step S3, the construction personnel can directly rotate the bolt 12 at the bottom of the fixed platform 11, remove the laser instrument, and directly replace and fix the level instrument on the fixed platform 11. It is not easy for the tripod 1 to move due to the replacement operation, thereby saving the secondary leveling operation caused by changing equipment, and can significantly improve the construction efficiency of the linear adjustment of the segment beam.

[0025] After the operation is completed, the construction worker only needs to pull up the connecting ring 19 with one hand to open the top of the ventilation 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 of the ventilation pipe 165 is ventilated, the air can easily flow back between the suction cup 17 and the surface of the segment beam, so that the suction cup 17 can be easily detached from the ground without pulling hard, saving a lot of time for releasing the fixation. This greatly facilitates the relocation of the tripod 1 to the next placement point, further improving the ease of use of the tripod 1.

[0026] In summary, combined Figure 1-Figure 6 As shown in the figure, the working principle of the segment beam linear adjustment auxiliary method is as follows: First, S1. Use a tape measure to measure the width of the beam deck to determine the position of the beam centerline, and use an ink fountain and ink line to pop out a clear centerline on the top surface of the segmental beam; S2. According to the above specific operation contents, fix the tripod 1 on the adjusted segment beam, align the laser instrument with the hole position, place it on the fixing table 11, rotate the screw 12 to complete the fixation, and then fine-tune the laser instrument so that the laser line it emits completely coincides with the ink line that has been drawn; S3, using a laser to adjust the line shape of adjacent segments; S4, reverse the screw bolt 12 to release the fixing effect of the fixing platform 11 and the laser instrument, remove the laser instrument, and then place the level on the fixing platform 11 to fix it. After the fixing is completed, use the level to adjust the beam elevation.

[0027] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A segment beam linear adjustment auxiliary method, characterized in that: The following steps are involved: S1. Use a tape measure to measure the width of the beam deck to determine the position of the beam centerline, and use an ink fountain and ink line to pop out a clear centerline on the top surface of the segmental beam; S2. On the adjusted segmental beam, use the tripod (1) to stabilize the laser instrument and fine-tune the laser instrument so that the laser line it emits completely coincides with the ink line drawn; S3, using a laser to adjust the alignment of adjacent segments; S4. Assemble the level on the tripod (1) and use the level to adjust the beam elevation.

2. A segment beam linear adjustment auxiliary method according to claim 1, characterized in that: Before the method is performed, tools are prepared: a level, a laser, a tape measure and an ink fountain, and the laser is provided with a tripod (1), the level is provided with a tower ruler, and the tape measure is selected to have a specification of 50 m.

3. The segment beam linear adjustment auxiliary method according to claim 1, characterized in that: The specific operation of step S3 is: comparing the position relationship between the ink line and the laser line, and adjusting the position of the segment beam according to the offset between the ink line and the laser line to make it consistent with the adjusted segment beam line shape.

4. The segment beam linear adjustment auxiliary method according to claim 1, characterized in that: The specific operation of step S4 is: using a level to measure the elevation of each segment beam, and adjusting the elevation of the segment beam according to the measurement result to meet the design requirements.

5. The segment beam linear adjustment auxiliary method according to claim 1, characterized in that: The tripod (1) comprises a fixing platform (11), a screw bolt (12), a supporting foot (13), a threaded column (14) and a cone (15); the fixing platform (11) is provided with a screw bolt (12) at the bottom, and the fixing platform (11) is connected to the supporting foot (13) at the bottom via a hinge; the supporting foot (13) is fixedly connected to the threaded column (14) at the bottom, and the cone (15) is welded to the bottom of the threaded column (14).

6. A segment beam linear adjustment auxiliary method according to claim 5, characterized in that: The tripod (1) further comprises an auxiliary support component (16), a suction cup (17), a control component (18) and a connecting ring (19); the bottom of the auxiliary support component (16) is fixedly connected to the suction cup (17), the control component (18) is installed inside the auxiliary support component (16), and the top of the control component (18) is fixedly connected to the connecting ring (19).

7. The segment beam linear adjustment auxiliary method according to claim 6, characterized in that: The auxiliary support assembly (16) comprises 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); the outer surface of the inner ring (161) is movably connected to the outer ring (162) via a bearing; the outer wall of the outer ring (162) is welded with the metal support (163); and the bottom of the metal support (163) is fixedly connected to the rubber pad (164).

8. The segment beam linear adjustment auxiliary method according to claim 7, characterized in that: The auxiliary support assembly (16) further comprises 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) is provided with 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), and the bottom end of the vent pipe (165) is connected to the top of the suction cup (17) through the vent hole. The auxiliary support assembly (16) further comprises a vent pipe (165), wherein 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) is provided with 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), and the bottom end of the vent pipe (165) is connected to the top of the suction cup (17) through the vent hole.

9. The segment beam linear adjustment auxiliary method according to claim 8, characterized in that: 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 to the connecting ring (19), 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).

10. The segment beam linear adjustment auxiliary method according to claim 9, characterized in that: 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 to the bottom of the top cover (182), and the bottom end of the telescopic rod (184) is fixedly connected to the fixed support (185); one end of the fixed rod (186) is fixedly connected to the outer wall of the fixed support (185), and the other end of the fixed rod (186) is fixedly connected to the inner wall of the ventilation pipe (165); and the fixed support (185) is fixed to the inside of the ventilation pipe (165) via the fixed rod (186).

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