A construction method for installing a support for implanting anchor bolts in existing railway piers

Abstract

The present application discloses a construction method for installing a bracket for implanting anchor bolts of an existing railway pier, which relates to the technical field of railway bridge construction and includes the following steps: S1: Measure the distance between the bridge bracket and the pier at the construction site, fabricate a hanging basket mold, and install it on site; S2: Install the hanging basket. Fix steel wires at the four corners of the hanging basket, and use the main rope to lift the hanging basket from under the bridge to the installation position of the pier anchor bolts. One end of the main rope is fixed to the bridge bearing, and the steel wire rope is fixed to the bridge railing; S3: Measure the hole positions, determine the installation center line, measure the hole positions, and find the positions to be drilled; S4: Drill holes. Use a water drill to drill holes at the positions located in S3 to form anchor holes; S5: Clean the holes. Repeatedly clean them with a steel brush and an air cylinder; S6: Implant anchor bolts into the anchor holes and inject anchoring glue; S7: Conduct a pull-out test; S8: Install the bracket; S9: Install the bridge bracket and the bridge pillar. The present application has the effect of reducing the impact on railway use during the bracket installation process.

Description

Technical Field

[0001] This application relates to the technical field of railway bridge construction, and in particular to a construction method for installing a bracket for implanting anchor bolts on existing line bridge piers. Background Art

[0002] At present, with the rapid development of China's railway transportation industry, during the large-scale construction of railways, many existing railways need to be electrified and speeded up and capacity-expanded. Most of them involve bridge construction, and there are a large number of high-altitude installation operations during the construction process. Therefore, it is often necessary to install brackets at intervals on both sides of the bridge, and the brackets are used as the installation platform for the line to support the line.

[0003] In the related art, during the installation of the bracket, construction workers often need to perform a series of construction operations on the bridge deck, which requires stopping the operation of the railway, making the railway unable to be used within a certain construction period, causing great trouble to transportation, and there is still room for further improvement. Summary of the Invention

[0004] In order to reduce the impact on the use of the railway during the installation of the bracket, this application provides a construction method for installing a bracket for implanting anchor bolts on existing line bridge piers.

[0005] This application provides a construction method for installing a bracket for implanting anchor bolts on existing line bridge piers, and adopts the following technical solutions:

[0006] A construction method for installing a bracket for implanting anchor bolts on existing line bridge piers includes the following steps:

[0007] S1: Measure the distance between the bridge bracket and the bridge pier at the construction site, and at the same time manufacture the hanging basket used in the construction process and install it on site;

[0008] S2: Install the hanging basket. Fix the steel wire ropes at the four corners of the hanging basket, and use a main rope to lift the hanging basket from under the bridge to the installation position of the anchor bolts on the pier body; Fix one end of the main rope to the bridge bearing and fix the steel wire rope to the bridge railing.

[0009] S3: Hole position measurement. First, determine the installation center line, use the hole position measurement tool to measure the hole position, and find the position to be drilled on the bridge pier;

[0010] S4: Drill holes. Use a water drill to drill holes at the positions located in S3 to form anchor holes;

[0011] S5: Clean the anchor holes. Use a steel brush and an air cylinder to clean repeatedly;

[0012] S6: Implant anchor bolts into the anchor holes, and inject anchor glue between the anchor bolts and the inner wall of the anchor holes;

[0013] S7: Pull-out test. After the anchor bolts are implanted for 72 hours, use a pull-out tester to apply a pull-out test load to the anchor bolts;

[0014] S8: Bracket installation;

[0015] S9: Install bridge brackets and bridge columns.

[0016] By adopting the above technical solutions, the anchor bolts are implanted on the bridge pier and then the brackets are installed. During the installation process, the cables are located on both sides of the bridge, and the construction of the railway bridge deck can be reduced by lifting the hanging baskets on both sides of the bridge during the construction process; the brackets are installed by implanting the anchor bolts, and the installation process is convenient and fast, improving the construction efficiency.

[0017] Optionally, S9 further includes the following steps:

[0018] S91: Assemble the bridge brackets and bridge columns together in advance;

[0019] S92: Lift the assembled bridge brackets and bridge columns as a whole;

[0020] S93: Manually cooperate to align the hole positions of the bridge brackets and the brackets;

[0021] S94: Pass the bolts through the corresponding holes from top to bottom;

[0022] S95: Put on the bolt nuts and tighten them diagonally and cyclically with a wrench;

[0023] S96: The crane unhooks, resets, and transfers to the installation location.

[0024] By adopting the above technical solutions, during installation, first install the brackets on the anchor bolts, and then install the integrally assembled bridge brackets and bridge columns on the brackets. The installation of the bridge brackets and bridge columns can be carried out outside the bridge, shortening the construction period on the bridge.

[0025] Optionally, the hole position measurement tool includes a combined measuring and drilling instrument. After the anchor hole measurement is completed, the combined measuring and drilling instrument can be used as the water drill hole support in S4.

[0026] By adopting the above technical solutions, since the bridge piers are usually cylindrical, elliptical cylindrical or square cylindrical, the combined measuring and drilling instrument can quickly find the position of the hole to be drilled during positioning, and after finding the position of the hole to be drilled, the combined measuring and drilling instrument can directly provide support for the water drill bit, so that drilling can be directly carried out after positioning, and the construction personnel do not need to install the water drill support separately, and the accuracy of the water drill hole can be maintained, improving the construction efficiency.

[0027] Optionally, the hole position measurement tool includes a main bracket. The main bracket includes a long strip-shaped support bar, and two connecting bars fixed to the same long side of the support bar. At one end of the connecting bar away from the support bar, a support foot plate for abutting against the pier is rotatably provided. The rotation axis of the support foot plate is perpendicular to the length direction of the support bar. A protractor is fixedly connected to the support foot plate. A measurement pen perpendicular to its own length direction is slidably provided on the support bar. The distances from the measurement pen to the two connecting bars are the same.

[0028] By adopting the above technical solution, when it is necessary to measure the hole positions of an elliptical cylinder or a cylinder, the two support foot plates are abutted against the pier, and the degrees of the connecting bars and the support foot plates shown on the two protractors are used to determine whether the measurement pen is located at the specified position. It is also possible to calculate whether the measurement pen is directly opposite the drilling position through the angle between the support foot plate and the connecting bar.

[0029] Optionally, a connecting bolt is passed through the support foot plate, and after passing through the support foot plate, the connecting bolt is threadedly connected to the connecting bar.

[0030] By adopting the above technical solution, when the connecting bolt is loosened, the support foot plate can rotate. When the connecting bolt is rotated so that the nut of the connecting bolt abuts tightly against the support foot plate, the rotation of the support foot plate can be restricted.

[0031] Optionally, a moving bar is slidably connected to the surface of the support bar away from the connecting bar along the length direction. The measurement pen is installed at one end of the moving bar, and a drilling sleeve is provided at the other end of the moving bar. When the moving bar moves along the length direction of the support bar to one end and cannot move any further, the measurement pen is located at the midpoint position of the connection line of the two connecting bars; when the moving bar moves along the length direction of the support bar to the other end and cannot move any further, the drilling sleeve is located at the midpoint position of the connection line of the two connecting bars; a long hole for the movement of the measurement pen is opened on the support bar, and an anchor for fixing its own position is provided on the support foot plate.

[0032] By adopting the above technical solution, when the moving bar moves to one end so that the measurement pen is located between the two connecting bars, marks can be made on the outer wall of the pier through the measurement pen. When the moving bar is slid to the other end and the position is locked by the anchor, the drilling sleeve can allow the water drill bit to pass through, and the main bracket can be used as a water drill bracket.

[0033] Optionally, a locking bar is detachably connected to the support bar. A moving groove for the movement of the drilling sleeve is opened on the surface of the locking bar facing the support bar. A relief hole for the movement of the drilling sleeve is opened on the inner wall of the moving groove. First magnetic pieces are provided at both ends of the moving bar, and second magnetic pieces for attracting the first magnetic pieces are provided on the inner wall of the moving groove.

[0034] By adopting the above technical solution, the moving bar can slide in the moving groove and be limited by the locking bar. A clearance hole is provided to allow the rotary sleeve to pass through. The water drill bit is not easy to interfere with the locking bar. When the sliding moving bar is attracted to the first magnetic sheet and the second magnetic sheet, the position of the moving bar is more stable and not easy to move due to vibration or accidental touch.

[0035] Optionally, the moving bar is detachably connected to a measuring sleeve that slides in the give way hole, the measuring pen is coaxially inserted into the measuring sleeve, the end of the measuring sleeve away from the moving bar is threadedly connected to an end cap for the measuring pen to pass through, the measuring pen includes an abutment edge located in the measuring sleeve for abutting against the end cap, and a spring mounted outside the measuring pen is abutted between the abutment edge and the moving bar.

[0036] By adopting the above technical solution, the measuring pen is pushed away from one end of the pier, so that the measuring pen moves along the measuring sleeve while compressing the spring, so that the measuring pen can make a mark on the outer wall of the pier. When the measuring pen is released, the measuring pen is reset under the action of the reset force of the spring, so that when the moving bar is moved, the measuring pen is not easy to interfere with the outer wall of the pier.

[0037] Optionally, a spirit level is provided on a long side surface of the support bar, the drilling sleeve is detachably connected to the movable bar, and a coaxial bearing is fixed to the inner wall of the drilling sleeve.

[0038] By adopting the above technical solution, the drilling sleeve can be detached from the movable bar to facilitate the replacement of drilling sleeves of different sizes to adapt to different water drills. By arranging a bearing sleeve outside the water drill, the damage to the water drill caused by the friction between the water drill and the drilling sleeve during rotation can be reduced. By arranging a level, the water drill can be better kept horizontal when drilling, that is, perpendicular to the surface of the pier.

[0039] Optionally, two abutment strips are arranged on the surface of the supporting foot away from the connecting strip, the length direction of the abutment strips is parallel to the rotation axis direction of the supporting foot, and the abutment strips are respectively located on both sides of the surface of the supporting foot away from the connecting strip, and the anchor includes a plurality of anchor bolts threadedly connected to the supporting foot.

[0040] By adopting the above technical solution, the abutment strips arranged on both sides of the supporting footplate can better abut against the outer wall of the pier to position the supporting footplate. After adjusting the position of the main bracket and determining the rotation hole position, the anchor bolts are driven into the bridge by an electric drill tool to lock the position of the main bracket, which is convenient for drilling with a water drill.

[0041] In summary, the present application includes at least one of the following beneficial effects:

[0042] 1. During the installation process, the cables are located on both sides of the bridge, and the construction impact on the railway bridge deck can be reduced during the construction process by lifting the hanging baskets on both sides of the bridge; the brackets are installed by implanting anchor bolts, and the installation process is convenient and fast, improving the construction efficiency;

[0043] 2. When positioning, the combined surveying and drilling instrument can quickly find the position to be drilled, and after finding the position to be drilled, the combined surveying and drilling instrument can directly provide support for the diamond drill bit, so that drilling can be directly carried out after positioning, and construction workers do not need to install the diamond drill support separately, and the accuracy of the diamond drill hole can be maintained, improving the construction efficiency;

[0044] 3. The drilling sleeve can be detached from the moving strip for convenient replacement of different sizes of drilling sleeves to adapt to different diamond drills. By setting the bearing sleeve outside the diamond drill, the damage of the diamond drill caused by the friction between the diamond drill and the drilling sleeve during rotation is reduced. By setting the level gauge, the diamond drill can be kept horizontal better during drilling, that is, perpendicular to the surface of the pier. Brief Description of the Drawings

[0045] Figure 1 is the overall structural schematic diagram of the combined surveying and drilling instrument in the embodiment of the present application during use;

[0046] Figure 2 is the schematic diagram showing the structure of the support foot plate of the combined surveying and drilling instrument in the embodiment of the present application;

[0047] Figure 3 is the exploded structural schematic diagram of the combined surveying and drilling instrument in the embodiment of the present application;

[0048] Figure 4 is Figure 3 the enlarged schematic diagram at A in

[0049] Description of the Reference Numerals: 1, main bracket; 2, support bar; 21, long hole; 22, level gauge; 23, first handle; 3, connecting bar; 31, threaded hole; 32, indicating scale; 4, support foot plate; 41, protractor; 42, connecting bolt; 43, anchor bolt; 44, abutting bar; 5, locking bar; 51, moving groove; 52, relief hole; 53, second magnetic sheet; 6, moving bar; 61, first magnetic sheet; 62, drilling sleeve; 621, bearing; 63, surveying sleeve; 631, end cap; 632, passing hole; 633, spring; 64, second handle; 65, surveying pen; 651, abutting edge; 7, pier. Detailed Description of the Embodiment

[0050] The following will Figures 1-4 further describe the present application in detail with reference to the attached

[0051] An installation construction method for an anchor bolt implanting bracket of an existing railway pier disclosed in an embodiment of the present application includes the following steps:

[0052] S1: Measure the distance between the bridge bracket and the pier 7 at the construction site. Meanwhile, fabricate the hanging basket mold used in the construction process. The simple hanging basket adopted is light in weight and convenient for installation. After fabrication, test whether the strength of the steel wire rope required for hanging the hanging basket meets the requirements. After meeting the required requirements, proceed to the next step;

[0053] S2: Install the hanging basket.

[0054] First step: Fix the four corners of the hanging basket with steel wire ropes. Use a main rope to lift the hanging basket from under the bridge to the installation position of the anchor bolts on the pier body of the pier 7 by using the adjacent plan.

[0055] Second step: Fix the main rope on the bridge bearing (the connection point between the bridge and the pier 7), and fix the four-corner steel wire ropes on the bridge railing and the fixed angle steel on both sides of the sidewalk of the bridge respectively, so that the hanging basket is stable and evenly stressed.

[0056] Third step: The personnel assemble the safety rope and enter the hanging basket. The safety rope is fixed on the bridge bearing, so that the fixed rope of the hanging basket and the safety rope are in a parallel hanging state to ensure construction safety.

[0057] S3: Measure the hole positions required for the anchor bolts. First, it is necessary to determine the installation center line. A combined surveying and drilling instrument can be used, and the hole positions are determined using the equilateral triangle principle to improve the installation accuracy of chemical anchor bolts, improve the construction operation efficiency, and reduce the construction difficulty. That is, taking the center of the pier 7 as the reference point, determine two points 2 meters to both sides along the line direction. Then, taking these two points as the reference points, using the equilateral triangle principle, use a measuring rope to take the midpoints on the pier cap and the pier body respectively and make marks. Make 2 points on the pier body and 2 points on the pier cap, and determine them as the installation center lines of the pier body and the pier cap respectively.

[0058] Then determine the drilling hole positions. The hole position determination is carried out using the hole position determination tool of the bridge bracket. Before positioning, use a steel bar detector to detect the position of the steel bars. The hole positions should avoid the steel bars inside the pier 7, so that when determining the hole positions, the required hole positions can be determined without damaging the concrete structure, and avoid the situation where the hole positions are determined on the steel bars, which delays the construction efficiency.

[0059] Among them, referring to Figure 1 and Figure 2, the hole position measurement tool includes a main bracket 1. The main bracket 1 includes a strip-shaped support bar 2 and two connecting bars 3 fixed on the same long side of the support bar 2. The two connecting bars 3 are arranged symmetrically with respect to the plane where the midline of the support bar 2 is located. At one end of the connecting bar 3 away from the support bar 2, a support foot plate 4 for abutting against the pier 7 is rotatably arranged. The rotation axis of the support foot plate 4 is perpendicular to the length direction of the support bar 2. A protractor 41 is fixedly connected to the support foot plate 4. An indicating scale 32 is arranged on the surface of the connecting bar 3 away from the support bar 2. The angle turned by the support foot plate 4 can be obtained by the display of the indicating scale 32 on the protractor 41. A measurement pen 65 perpendicular to its own length direction is slidably arranged on the support bar 2 on the support foot plate 4. The distances from the measurement pen 65 to the two connecting bars 3 are the same, that is, the measurement pen 65 is located at the middle position between the two connecting bars 3.

[0060] When in use, the two support foot plates 4 can be abutted against the side wall of the elliptical column-shaped pier 7. When the scales indicated by the two indicating scales 32 on the protractor 41 are the same, the length direction of the measurement pen 65 is along the diameter direction of the cross-section of the pier 7. When the scales indicated by the indicating scale 32 on the protractor 41 are different, the specific position of the drilling point can also be obtained by calculation, which is convenient for quickly positioning the position where a hole needs to be opened on the side wall of the pier 7. The measurement pen 65 is slidably connected to the support bar 2. After the positioning is completed, marks can be made on the outer wall of the pier 7 by sliding the measurement pen 65. A first handle 23 is vertically and fixedly connected to the bottom of the support bar 2, which is convenient for the user to hold to support the main bracket 1.

[0061] Refer to Figure 3 and Figure 4 , the connecting bar 3 is bolted to the surface of the support bar 2 away from the pier 7. A moving groove 51 is formed in the surface of the connecting bar 3 facing the support bar 2 along the length direction. A moving bar 6 is slidably connected in the moving groove 51 along the length direction of the support bar 2. The measurement pen 65 is slidably arranged on the moving bar 6 and can move along with the moving bar 6. Correspondingly, a long hole 21 for the measurement pen 65 to slide is formed on the support bar 2.

[0062] First magnetic pieces 61 are fixedly connected to both ends of the moving bar 6. Second magnetic pieces 53 for attracting and engaging with the first magnetic pieces 61 are fixedly connected to the two opposite side walls of the moving groove 51. When the moving bar 6 slides to the position where the first magnetic piece 61 and the second magnetic piece 53 are attracted and engaged, the position of the moving bar 6 is fixed and not easily moved. A second handle 64 is vertically and fixedly connected to the middle position of the surface of the moving bar 6 away from the support bar 2, which is convenient for the user to move the moving bar 6.

[0063] The two ends of the moving bar 6 away from the surface of the support bar 2 are respectively detachably connected to the fixed measurement sleeve 63 and the drilling sleeve 62 through bolts. The fixed measurement pen 65 is slidably connected to the fixed measurement sleeve 63. When the moving bar 6 is slid to both sides until the first magnetic sheet 61 and the second magnetic sheet 53 are attracted and fixed, the distances from the axes of the fixed measurement sleeve 63 and the drilling sleeve 62 to the two connecting bars 3 are equal in sequence. After positioning is completed, it is possible to choose to make marks with the fixed measurement pen 65 or support a rhinestone through the drilling sleeve 62 for drilling.

[0064] Refer to Figure 3 and Figure 4 , coaxially fixed-connected with a bearing 621 inside the drilling sleeve 62. The inner diameter of the bearing 621 is equal to or slightly larger than the outer diameter of the rhinestone drill bit, so as to provide support for the rhinestone drill bit. When the rhinestone drill bit rotates, the inner ring of the bearing 621 can remain stationary or be driven to rotate by the rhinestone drill bit, reducing the friction between the rhinestone drill bit and the drilling sleeve 62 and playing a role in protecting the rhinestone drill bit. When different specifications of rhinestones are needed, different specifications of drilling sleeves 62 can be replaced. A level 22 is fixedly connected to the surface of the support bar 2 away from the first handle 23. Through the cooperation of the level 22 and the drilling sleeve 62, the rhinestone can be kept horizontal during drilling.

[0065] The fixed measurement pen 65 coaxially penetrates through the fixed measurement sleeve 63. One end of the fixed measurement sleeve 63 away from the moving bar 6 is threadedly connected with an end cap 631 for the fixed measurement pen 65 to penetrate through. The fixed measurement pen 65 includes an abutting edge 651 located inside the fixed measurement sleeve 63 for abutting against the end cap 631. A spring 633 sleeved outside the fixed measurement pen 65 abuts between the abutting edge 651 and the moving bar 6. Push the end of the fixed measurement pen 65 away from the pier 7, so that the fixed measurement pen 65 moves along the fixed measurement sleeve 63 while compressing the spring 633, enabling the fixed measurement pen 65 to make marks on the outer wall of the pier 7. When the fixed measurement pen 65 is released, the fixed measurement pen 65 resets under the restoring force of the spring 633, so that when the moving bar 6 is moved, the fixed measurement pen 65 is not likely to interfere with the outer wall of the pier 7. A relief hole 52 for the fixed measurement sleeve 63, the drilling sleeve 62 and the second handle 64 to pass through is provided on the inner wall of the moving groove 51. The provision of the relief hole 52 enables the locking bar 5 not to easily affect the movement of the moving bar 6, and the locking bar 5 can play a role in limiting the movement of the moving bar 6.

[0066] Refer to Figure 2 and Figure 3 , a connecting bolt 42 penetrates through the support foot plate 4. After the connecting bolt 42 passes through the support foot plate 4, it is threadedly connected to the connecting bar 3, that is, a threaded hole 31 for threaded connection with the connecting bolt 42 is provided on the connecting bar 3. When the connecting bolt 42 is loosened, the support foot plate 4 can rotate. When the connecting bolt 42 is rotated so that the nut of the connecting bolt 42 abuts tightly against the support foot plate 4, the rotation of the support foot plate 4 can be restricted.

[0067] On the surface of the support foot plate 4 away from the connecting strip 3, two abutting strips 44 are connected. The length direction of the abutting strips 44 is parallel to the rotation axis direction of the support foot plate 4, and they are respectively located on both sides of the surface of the support foot plate 4 away from the connecting strip 3. An anchor is provided on the support foot plate 4, and the anchor includes a plurality of anchor bolts 43 threadedly connected to the support foot plate 4. Since the abutting strips 44 are arranged on both sides of the support foot plate 4, they can better abut against the outer wall of the pier 7 to position the support foot plate 4. After adjusting the position of the main bracket 1 and determining the drilling hole position, the anchor bolts 43 are driven into the bridge by an electric drill tool to lock the position of the main bracket 1, facilitating the drilling of the water drill.

[0068] S4: Drilling. During the operation, attention should be paid to:

[0069] (1) A water drill and a hollow diamond drill bit should be used for drilling. Before drilling, first measure the hole position through a combined instrument for hole location and measurement. Fix the support foot plate 4 of the main bracket 1 to the wall of the pier 7 through the anchor bolts 43, and then install the drill bit in the drilling sleeve 62. After completing the above preparations, turn on the power switch of the water drill and slowly push the drill bit forward to drill a hole to form an anchor hole.

[0070] (2) Whenever the drill bit drills to a depth of 50 - 60 mm, lift the drill bit and remove the concrete core block inside the drill bit until the required drilling depth is reached. Ensure the perpendicularity of the hole through the combined instrument for hole location and measurement during drilling to avoid the occurrence of steps.

[0071] (3) After drilling, check and review whether the hole diameter, hole depth, and hole spacing meet the design requirements.

[0072] S5: Hole cleaning.

[0073] (1) Repeatedly clean with a steel brush and an air cylinder. It must be brushed three times with a steel brush and blown twice with an air cylinder. It is necessary to reach the state that there is no floating ash when touching the hole by hand before proceeding to the next step of operation.

[0074] (2) If there is accumulated water in the hole, it must be cleaned up before proceeding to the next step of operation. Especially when drilling with a water drill, use a special water pump to pump out the accumulated water in the hole, and then use a sponge or a dry cloth to absorb the remaining accumulated water in the hole.

[0075] S6: Anchor bolt implantation.

[0076] (1) Check whether the parts of the injection gun are complete, adjust the gun body, push the gun frame forward, pull the gunstock backward, put the anchoring adhesive into the injection gun, and install a static mixing tube on the anchoring adhesive. Do not use the anchoring adhesive with damaged packaging or an unclean gun sleeve. When installing the static mixing tube, check whether the retaining ring has fallen off and push the retaining ring back to its original position.

[0077] (2)Before each use, about 1 - 2 cm of glue should be extruded first, and this glue shall not be used. The glue can be injected into the hole only when it turns dark gray. When injecting the anchoring glue, start from the bottom of the hole, and slowly lift the injection gun while squeezing the glue until the specified injection depth or injection volume of the anchoring glue is reached.

[0078] S7: Pull - out test;

[0079] (1)Generally, 72 hours after the general anchor bolts are implanted, a pull - out test can be carried out on the anchor bolts using a pull - out tester.

[0080] (2)Put the pull - out tester on the anchor bolt to be inspected, close the oil valve, tighten the anchor bolt with the anchor, slowly apply pressure until there is no gap between the pull - out tester and the wall surface, uniformly load the force value, reach and exceed the design value, stop applying pressure, click the peak key, record the loaded force value, wait for 2 minutes, then record the force value at this time, and then open the oil valve to unload the load and make the jack return to its original state.

[0081] S8: Bracket installation;

[0082] (1)The vertical pole vehicle enters the installation location for alignment and stops stably.

[0083] (2)Lift the bracket with a steel wire rope to fasten the bracket firmly, and the crane lifts the bracket and lowers it smoothly. When the bracket reaches the installation position, 2 people below straighten the bracket to align the bolt holes with the bolts, install the bracket well, and put on the washers and nuts.

[0084] (3)Level the bracket.

[0085] Place the spirit level on the bracket, adjust the gap between the bottom of the bracket and the 7 - surface of the pier with washers to make the bracket reach the standard, and then tighten the nuts.

[0086] S9: Install the bridge bracket and bridge pillar.

[0087] (1)First, assemble the bridge bracket and bridge pillar together in advance;

[0088] (2)Lift the assembled bridge bracket and bridge pillar as a whole;

[0089] (3)Manually cooperate to align the hole positions of the bridge bracket and the bracket;

[0090] (4)Pass the bolts through the corresponding holes from top to bottom;

[0091] (5)Put on the bolt nuts and then tighten them in a diagonal and circular manner with a wrench;

[0092] (6)The crane unhooks, resets, and transfers to the installation location.

[0093] The implementation principle of the installation construction method of the anchor bolt implantation bracket for existing railway piers in the embodiments of this application is as follows: During construction, first assemble and install the hanging basket. After the installation is completed, use a combined instrument for fixed measurement and drilling to measure the hole positions. After drilling, use the combined instrument for fixed measurement and drilling as a water drill bracket to drill holes. After drilling, clean the holes. After meeting the hole cleaning conditions, implant the anchor bolts. After the implantation is completed, conduct a pull-out test, and finally install the bridge bracket.

[0094] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application based on this, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A construction method for installing a bracket for implanting anchor bolts of an existing railway pier, characterized in that: It includes the following steps: S1: Measure the distance between the bridge support and the bridge pier (7) at the construction site. Meanwhile, fabricate the hanging basket used in the construction process and install it on-site; S2: Install the hanging basket. Fix the steel wire ropes at the four corners of the hanging basket. Use a main rope to lift the hanging basket from under the bridge to the installation position of the pier anchor bolts; Fix one end of the main rope to the bridge bearing and fix the steel wire rope to the bridge railing; S3: Hole position measurement. First, determine the installation center line. Use the hole position measurement tool to measure the hole position and find the position to be drilled on the bridge pier (7); S4: Drill holes. Use a water drill to drill holes at the positions located in S3 to form anchor holes; S5: Clean the anchor holes. Use a steel brush and an air cylinder to clean repeatedly; S6: Insert anchor bolts into the anchor holes and inject anchor glue between the anchor bolts and the inner wall of the anchor holes; S7: Pull-out test. After the anchor bolts are inserted for 72 hours, use a pull tester to apply a pull test load to the anchor bolts; S8: Install the bracket; S9: Install the bridge support and the bridge pillar; The hole position measurement tool includes a dual-purpose instrument for measurement and drilling. After the measurement of the anchor hole is completed, the dual-purpose instrument for measurement and drilling can be used as the water drill rotation hole support in S4; The dual-purpose instrument for measurement and drilling includes a main bracket (1). The main bracket (1) includes a long strip-shaped support bar (2), and two connecting bars (3) fixed on the same long side of the support bar (2). A support foot plate (4) for abutting against the bridge pier (7) is rotatably arranged at one end of the connecting bar (3) away from the support bar (2). The rotation axis of the support foot plate (4) is perpendicular to the length direction of the support bar (2). A protractor (41) is fixedly connected to the support foot plate (4). A measurement pen (65) perpendicular to its own length direction is slidably arranged on the support bar (2). The distances from the measurement pen (65) to the two connecting bars (3) are the same; A moving bar (6) is slidably connected along the length direction on the surface of the support bar (2) away from the connecting bar (3). The measurement pen (65) is installed at one end of the moving bar (6). A drilling sleeve (62) is arranged at the other end of the moving bar (6). When the moving bar (6) moves along the length direction of the support bar (2) to one end and cannot move anymore, the measurement pen (65) is located at the midpoint position of the connection line of the two connecting bars (3); When the moving bar (6) moves along the length direction of the support bar (2) to the other end and cannot move anymore, the drilling sleeve (62) is located at the midpoint position of the connection line of the two connecting bars (3); A long hole (21) for the movement of the measurement pen (65) is formed on the support bar (2). An anchor is arranged on the support foot plate (4) for fixing its own position.

2. A construction method for installing a bracket for implanting anchor bolts of an existing railway pier, according to claim 1, characterized in that: Among them, S9 It further includes the following steps: S91: First, assemble the bridge support and the bridge pillar in advance; S92: Lift the assembled bridge support and bridge pillar as a whole; S93: Manually cooperate to align the hole positions of the bridge support and the bracket; S94: Pass bolts from top to bottom through the corresponding holes; S95: After putting on the bolt nuts, tighten them in a diagonal and cyclic manner with a wrench; S96: The crane unhooks, resets, and transfers to the installation location.

3. A construction method for installing a bracket for implanting anchor bolts of an existing railway pier, according to claim 1, characterized in that: The support foot plate (4) is provided with a connecting bolt (42) passing through it, and the connecting bolt (42) is threadedly connected to the connecting strip (3) after passing through the support foot plate (4).

4. A construction method for installing a bracket for implanting anchor bolts of an existing railway pier, according to claim 1, characterized in that: A locking strip (5) is detachably connected to the support strip (2). A moving groove (51) for the movement of the drilling sleeve (62) is formed on the surface of the locking strip (5) facing the support strip (2). A relief hole (52) for the movement of the drilling sleeve (62) is formed on the inner wall of the moving groove (51). First magnetic pieces (61) are arranged at both ends of the moving strip (6), and second magnetic pieces (53) for attracting and engaging with the first magnetic pieces (61) are arranged on the inner wall of the moving groove (51).

5. A construction method for installing a bracket for implanting anchor bolts of an existing railway pier, according to claim 4, characterized in that: A fixed measurement sleeve (63) sliding in the relief hole (52) is detachably connected to the moving strip (6). The fixed measurement pen (65) is coaxially arranged through the fixed measurement sleeve (63). A end cap (631) for the fixed measurement pen (65) to pass through is threadedly connected to the end of the fixed measurement sleeve (63) away from the moving strip (6). The fixed measurement pen (65) includes an abutting edge (651) located in the fixed measurement sleeve (63) for abutting against the end cap (631). A spring (633) sleeved on the fixed measurement pen (65) is abutted between the abutting edge (651) and the moving strip (6).

6. A construction method for installing a bracket for implanting anchor bolts in existing railway bridge piers according to claim 1, characterized in that: A level gauge (22) is arranged on a long side surface of the support strip (2). The drilling sleeve (62) is detachably connected to the moving strip (6), and a coaxial bearing (621) is fixed on the inner wall of the drilling sleeve (62).

7. A construction method for installing a bracket for implanting anchor bolts of an existing railway pier, according to claim 1, characterized in that: Two abutting strips (44) are connected to the surface of the support foot plate (4) away from the connecting strip (3). The length direction of the abutting strips (44) is parallel to the rotation axis direction of the support foot plate (4), and they are respectively located on both sides of the surface of the support foot plate (4) away from the connecting strip (3). The anchor includes a plurality of anchor bolts (43) threadedly connected to the support foot plate (4).

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