Bridge high stand column cross tie beam joint and construction method

Abstract

The invention relates to the technical field of bridge construction, and discloses a bridge high stand column cross tie beam joint and a construction method.The bridge high stand column cross tie beam joint comprises a prefabricated stand column which comprises a column body and a bracket; the bracket is fixed on the column body; the cross tie beam comprises a prefabricated base and cast-in-place concrete; the prefabricated base is provided with a pouring cavity which is opened upwards and penetrates through the two ends of the prefabricated base, and the cast-in-place concrete is poured into the pouring cavity; wherein the prefabricated base is placed on the brackets of the two adjacent column bodies at the same time, and the two ends of the pouring cavity are opposite to the two adjacent column bodies correspondingly. The construction quality can be balanced while the operation safety risk can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of bridge construction, and in particular to a bridge high column crossbeam joint and construction method. Background Technology

[0002] In bridge engineering, especially in the construction of urban viaducts, it is often necessary to install transverse beams between two tall columns to ensure the lateral stability and overall load-bearing performance of the bridge piers. Currently, there are two main methods for constructing transverse beams.

[0003] The first method is casting with formwork. This method requires installing steel formwork at height for support, and then dismantling the formwork after casting. The installation and dismantling of the steel formwork are complex, difficult to control in terms of quality, and have low construction efficiency. The second method is prefabrication and hoisting. The transverse beams are prefabricated in the factory and transported to the site, where large hoisting machinery is used for hoisting and connecting them to the columns. While this method is more efficient, the large weight and volume of the complete transverse beam components place high demands on the hoisting equipment, and there are significant safety hazards during the hoisting process.

[0004] Therefore, as can be seen from the above-mentioned related technologies, it is not easy to balance the safety of the operation and the construction quality in the existing construction of tall columns and horizontal beams. Summary of the Invention

[0005] In order to reduce operational safety risks while balancing construction quality, this application provides a bridge high column transverse tie beam joint and construction method.

[0006] Firstly, this application provides a bridge high-column transverse tie beam joint, employing the following technical solution: A bridge high-column transverse tie beam joint includes: A prefabricated column, comprising a column body and corbels; the corbels are fixed to the column body; A transverse beam includes a precast base and cast-in-place concrete; the precast base has an upward-opening casting cavity that extends through both ends of itself, and the cast-in-place concrete is poured into the casting cavity; The precast base is placed on the corbels of two adjacent columns, and the two ends of the casting cavity are respectively opposite to the two adjacent columns.

[0007] By adopting the above technical solution, the transverse beam structure is configured as a composite component consisting of a precast base and cast-in-place concrete. The precast base serves as a permanent formwork supported on the corbels of the precast columns. This reduces the complex procedures of on-site high-altitude formwork erection and dismantling, and avoids the problems of large lifting weight and high safety risks associated with integral precast transverse beams. It combines the dual advantages of controllable quality of precast components and good integrity of cast-in-place structures, balancing construction safety and quality stability.

[0008] Optionally, the inner surface of the precast base in the casting cavity is a roughened surface that has been roughened.

[0009] By adopting the above technical solution, the rough surface enhances the bond strength and shear resistance between the precast base and the cast-in-place concrete, preventing them from peeling or slipping during the stress process.

[0010] Optionally, there is a gap between the end face of the prefabricated base and the outer surface of the column, and the gap is filled with filler material.

[0011] By adopting the above technical solution, not only is the necessary operating space provided for the alignment adjustment during the hoisting process, but the filler material can also prevent grout leakage during concrete pouring, thereby improving the pouring quality.

[0012] Optionally, the bridge high column transverse tie beam node also includes an auxiliary device, the auxiliary device including... The mounting base is detachably connected to the center of the bottom of the prefabricated base; The clamping assembly comprises two sets, symmetrically mounted on the mounting base and respectively facing the corbels in two adjacent precast columns. Each set of clamping assemblies includes two clamping members, which are symmetrically rotatably connected to the mounting base for jointly clamping the corbels. Two centering components are symmetrically rotatably connected to the mounting base, with their rotation axis perpendicular to the rotation axis of the clamping component. When the two centering components rotate to abut against the outer walls of the two adjacent columns, the distances from both ends of the prefabricated base to the two columns are the same.

[0013] By adopting the above technical solution and setting up an auxiliary device including a mounting base, clamping components and centering components, the precast base can be accurately positioned in the horizontal and vertical directions by simultaneously clamping the two side brackets with the clamping components and abutting the column with the centering components when hoisting and positioning the precast base, thereby improving the convenience of hoisting and positioning.

[0014] Optionally, the auxiliary device also includes The reversing shaft is rotatably connected to the mounting base, and its axis is parallel to the rotation axis of the centering member; A linkage component, disposed between the reversing shaft and the clamping assembly, causes the reversing shaft to rotate, thereby driving the clamping assembly to rotate; and The adjustment group is provided in two sets, one set is engaged with the reversing shaft, and the other set is engaged with the rotation shaft of one of the centering components, so as to adjust the rotation angle between the reversing shaft and the centering component.

[0015] By adopting the above technical solution, setting up a reversing shaft, linkage components, and adjustment group, the rotation adjustment of the clamping assembly and centering component can be adjusted through the adjustment group, thereby reducing the complexity of operation.

[0016] Optionally, the adjustment group includes A movable column, coaxially movable within the corresponding reversing shaft or centering member, with its two ends, being a threaded end and a mating end respectively, are positioned far apart from each other. The threaded end is threadedly movable within the mounting base; and An adjusting sleeve is rotatably connected to the mounting base and simultaneously fitted onto the mating end; The mating end is spline-shaped and slides axially with the adjusting sleeve.

[0017] By adopting the above technical solution, the adjustment group uses a matching structure of a moving column and an adjustment sleeve, and realizes the combined function of rotational transmission and axial sliding through spline connection, so that the position can be fixed by the thread self-locking function after adjustment.

[0018] Optionally, the auxiliary device further includes a rotational power source, which is detachably connected to the mounting base. The rotational power source has an output end that can be coaxially inserted into the adjusting sleeve, and the rotational power source drives the adjusting sleeve to rotate through its own output end.

[0019] By adopting the above technical solution and setting a detachable rotational power source, and through the spline cooperation between the output end and the adjusting sleeve, rapid adjustment under electric or hydraulic drive can be achieved, reducing the intensity and error of manual operation.

[0020] Optionally, each of the clamping members has a first gear fixed coaxially at its rotating end. The first gears of the clamping members in the same group mesh with each other, and the first gears of the clamping members in different groups mesh with each other in pairs.

[0021] By adopting the above technical solution, the clamping components mesh with each other through the first gear, realizing the synchronous reverse movement of the clamping components in the same group and the linkage control of different groups of clamping components, so as to achieve the consistency of the bracket alignment.

[0022] Optionally, both the clamping member that abuts against one end of the cow leg and the centering member that abuts against one end of the column are roller structures.

[0023] Secondly, this application provides a construction method for a bridge high-column transverse tie beam, employing the following technical solution: A method for constructing a transverse tie beam for a high-column bridge includes the following steps: S1, Prefabricated columns and prefabricated bases are processed and formed in the prefabrication yard; S2, the prefabricated columns will be installed on the construction site; S3, hoist the precast base and support it on the corbels of two adjacent precast columns; S4, tie the steel cage inside the precast base; S5, pour concrete into the casting cavity of the precast base, and after the concrete reaches the required strength, a transverse beam structure is formed.

[0024] In summary, this application includes at least one of the following beneficial effects: 1. The precast base supported by corbels, combined with the precast base and cast-in-place concrete, reduces the risks of high-altitude formwork operations and avoids the problem of difficult hoisting of precast components as a whole. It improves construction safety without weakening the quality of node connections. 2. By using auxiliary devices to achieve linkage control of clamping and centering, the prefabricated base can be quickly and accurately positioned to the design position, improving installation accuracy and construction efficiency, and reducing the difficulty of manual adjustment. Attached Figure Description

[0025] Figure 1 This is a front view of the prefabricated column and the horizontal beam in the embodiment of this application; Figure 2 This is a structural schematic diagram from another perspective of the cooperation between the prefabricated columns and the horizontal beams in the embodiments of this application; Figure 3 This is a structural schematic diagram of the prefabricated columns, crossbeams, and auxiliary devices in the embodiments of this application; Figure 4 This is a structural schematic diagram of the auxiliary device from the bottom view in the embodiments of this application; Figure 5 This is a schematic diagram of the auxiliary device in the embodiments of this application; Figure 6 This is a schematic diagram of the first gear engagement in an embodiment of this application; Figure 7 This is a structural schematic diagram showing the relative positions of the clamping component and the centering component in an embodiment of this application; Figure 8 This is a cross-sectional view of the adjustment group in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Precast column; 101. Column body; 102. Bracket; 2. Horizontal tie beam; 201. Precast base; 3. Casting cavity; 4. Mounting seat; 5. Clamping assembly; 51. Clamping component; 511. First connecting rod; 512. First connecting frame; 513. First roller; 6. Centering component; 61. Second connecting rod; 62. Second connecting frame; 63. Second roller; 7. Reversing shaft; 8. Linkage component; 81. First bevel gear; 82. Second bevel gear; 9. Adjustment group; 91. Moving column; 92. Adjustment sleeve; 10. Threaded end; 11. Mating end; 12. Rotational power; 13. First gear; 14. Second gear; 15. Extension shaft; 16. Central shaft; 17. Guide protrusion; 18. Guide groove; 19. Locking nut; 20. Waist-shaped hole. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0028] This application discloses a two-node crossbeam of a high-column bridge. (Refer to...) Figure 1 and Figure 2 The bridge's high column and transverse beam 2 node includes a precast column 1 and a transverse beam 2.

[0029] The precast column 1 includes a column body 101 and a bracket 102. The column body 101 is a square column structure, and the bracket 102 is a square base. The bracket 102 is fixed to the column body 101 and protrudes from the surface of the column body 101. A bracket 102 is provided on the opposite side of the column body 101 of two adjacent precast columns 1.

[0030] The transverse beam 2 includes a precast base 201 and cast-in-place concrete. The precast base 201 has casting cavities 3 extending through its two opposite ends along its length, and the casting cavities 3 also extend through the top of the precast base 201, making the precast base 201 a U-shaped trough. The precast base 201 needs to be placed on the corbels 102 opposite to two adjacent precast columns 1, so that the two ends of the casting cavities 3 are respectively opposite to the outer walls of the two columns 101, and the precast base 201 is supported by the corbels 102. After the precast base 201 is placed on the corbels 102, the cast-in-place concrete is poured to form a rectangular transverse beam 2 structure fixed to the precast columns 1.

[0031] During construction, the prefabricated columns 1 and prefabricated bases 201 are prefabricated in the prefabrication yard, which reduces the amount of work required for high-altitude operations on site. Furthermore, the prefabricated bases 201 are supported by corbels 102 and serve as the foundation for casting, which reduces the complexity of traditional formwork casting and makes it easier to control the construction quality. Compared with the method of prefabricating the entire crossbeams 2, the lifting weight is reduced and the safety of construction is improved, thus balancing the safety of the operation with the efficiency of construction quality.

[0032] It should be noted that both the precast column 1 and the precast base 201 are made of reinforced concrete. Before pouring concrete into the casting cavity 3, a reinforcing cage is tied inside the casting cavity 3 so that the transverse beam 2 is also made of reinforced concrete after completion. In order to enhance the bonding force between the precast base 201 and the cast-in-place concrete, the inner surface of the casting cavity 3 is roughened to make it a rough surface.

[0033] Furthermore, to prevent the precast base 201 from getting stuck during hoisting, the distance between the opposite faces of two adjacent columns 101 is greater than the length of the precast base 201, creating a gap between the end face of the precast base 201 and the surface of the column 101 after it is placed on the bracket 102. To prevent grout leakage during pouring, the gap is sealed with filler material, such as rubber pads or foam boards. The gap width is between 20mm and 50mm, and can be 20mm, 30mm, or 50mm.

[0034] Reference Figure 3 and Figure 4 Furthermore, this embodiment also includes an auxiliary device for assisting the prefabricated base 201. The auxiliary device includes a mounting base 4, a clamping assembly 5, and a centering member 6. The mounting base 4 is detachably connected to the bottom center of the prefabricated base 201 by bolts. The clamping assembly 5 and the centering member are both mounted on the mounting base 4. The clamping assembly 5 is used to cooperate with the bracket 102 so that the perpendicular bisector of the prefabricated base 201 along its width direction coincides with the perpendicular bisector of the bracket 102 along its length direction. In this embodiment, since the length of the bracket 102 is the same as the width of the prefabricated base 201, the opposite sides of the prefabricated base 201 are aligned with the two ends of the bracket 102. The centering member 6 is used to cooperate with the column 101 so that the distances from the end faces of the two ends of the prefabricated base 201 to the surfaces of the two opposite columns 101 are the same.

[0035] Specifically, the clamping assembly 5 has two sets. The two sets of clamping assemblies 5 are symmetrically installed on the mounting base 4 along the length direction of the precast base 201, and the two sets of clamping assemblies 5 are respectively used to face the brackets 102 in the two adjacent precast columns 1. Each set of clamping assemblies 5 includes two clamping members 51. The clamping members 51 are in the shape of long rods. The two clamping members 51 in the same set are symmetrically installed on the mounting base 4 along the width direction of the precast base 201. Specifically, one end of the clamping member 51 is rotatably connected to the mounting base 4, and the axis of rotation extends vertically along the height direction of the precast base 201. The two clamping members 51 in the same set rotate synchronously and symmetrically, so that the two clamping members 51 can jointly clamp the brackets 102 by abutting against the two ends of the brackets 102 respectively, so that the precast base 201 reaches the position where the two sides are aligned with the two ends of the brackets 102 respectively.

[0036] Reference Figure 5 and Figure 6Each clamping member 51 has a first gear 13 fixed to its rotating end, which is coaxial with the rotation axis of the clamping member 51. The first gear 13 is rotatably connected to the mounting base 4. The first gears 13 of the clamping members 51 in the same group mesh with each other, and the first gears 13 of the clamping members 51 in different groups mesh with each other in pairs. Through the meshing of the first gears 13, when one clamping member 51 rotates, it will drive the other clamping member 51 in the same group to rotate in the opposite direction, and at the same time drive the clamping members 51 in another group to rotate symmetrically, thereby realizing the clamping of the brackets 102 on the two columns 101.

[0037] Reference Figure 3 and Figure 5 There are two centering members 6, each shaped like a long rod. The two centering members 6 are symmetrically mounted on the mounting base 4 along the length of the prefabricated base 201. Specifically, one end of each centering member 6 is rotatably connected to the mounting base 4, and the axis of rotation extends along the width of the prefabricated base 201. Each of the rotating ends of the two centering members 6 has a second gear 14 coaxial with the axis of rotation of the centering member 6. The second gear 14 is rotatably connected to the mounting base 4, and the second gears 14 of the two centering members 6 mesh with each other, so that when one centering member 6 rotates, it simultaneously drives the other centering member 6 to rotate in the opposite direction. When the ends of the two centering members 6 away from the mounting base 4 abut against the opposite surfaces of the two columns 101, the perpendicular bisector of the length of the prefabricated base 201 coincides with the perpendicular bisector between the two columns 101, ensuring that the distances from both ends of the prefabricated base 201 to the outer walls of the two columns 101 are consistent.

[0038] Before hoisting the precast base 201, the distance between the two clamping members 51 used to clamp one end is adjusted to be greater than the length of the bracket 102, and the distance between the two centering members 6 used to abut one end is adjusted to be less than the distance between the two brackets 102. Then, the precast base 201 is hoisted so that it enters between the two columns 101 and is positioned above the bracket 102. The two clamping members 51 are respectively aligned with the two ends of the corresponding bracket 102, while the abutting ends of the two centering members 6 are positioned below the bracket 102. Then, the rotation angle of the clamping members 51 is adjusted so that they clamp the bracket 102. Next, the rotation angle of the centering members 6 is adjusted so that they abut against the outer wall of the column 101. Finally, the precast base 201 is lowered and placed on the bracket 102 by its own weight.

[0039] Reference Figure 7To adjust the rotation angle between the clamping member 51 and the centering member 6, the auxiliary device also includes a reversing shaft 7, a linkage 8, an adjustment group 9, and a rotational power source 12. The reversing shaft 7 is rotatably connected to the mounting base 4, and the reversing shaft 7 is linked to one of the clamping members 51 through the linkage 8, so that when the reversing shaft 7 rotates, it links the clamping member 51 to rotate, thereby driving the other clamping members 51 to rotate. An extension shaft 15 is coaxially fixed to the middle of one of the second gears 14, and the extension shaft 15 is rotatably connected to the mounting base 4, and the extension shaft 15 is parallel to the central shaft 16.

[0040] The adjustment group 9 has two sets, which are respectively matched with the reversing shaft 7 and the extension shaft 15 to adjust the rotation angle of the reversing shaft 7 and the extension shaft 15. The rotational power 12 provides the adjustment group 9 with the power to make the adjustment.

[0041] Specifically, the reversing shaft 7 is rotatably connected to the mounting base 4 and its axis is coaxial with the second gear 14. The height of the reversing shaft 7 is located between the first gear 13 and the second gear 14.

[0042] The linkage 8 includes a first bevel gear 81 and a second bevel gear 82. The first gear 81 is coaxially fixed to a central shaft 16, which is rotatably connected to the mounting base 4. The first bevel gear 81 is fixedly sleeved on the central shaft 16, and the second bevel gear 82 is fixedly sleeved on the reversing shaft 7. The first bevel gear 81 and the second bevel gear 82 mesh with each other, so that when the reversing shaft 7 rotates, it can drive the first gear 13 to rotate through the linkage 8.

[0043] Reference Figure 7 and Figure 8 Each adjustment group 9 includes a moving column 91 and an adjustment sleeve 92. The following description takes the cooperation between the adjustment group 9 and the reversing shaft 7 as an example. Specifically, the two ends of the moving column 91 that are far apart from each other are the threaded end 10 and the mating end 11, respectively. The middle position of the moving column 91 is coaxially slidably inserted into the reversing shaft 7, and the inner wall of the reversing shaft 7 has a guide protrusion 17. The outer wall of the moving column 91 has a guide groove 18 for the guide protrusion 17 to slide along the axial direction of the moving column 91, so as to restrict the relative rotation between the moving column 91 and the reversing shaft 7. At the same time, the threaded end 10 passes through the reversing shaft 7 and moves threadedly in the mounting base 4. The threaded locking force between the threaded end 10 and the mounting base 4 restricts the rotation of the moving column 91 without the action of external force.

[0044] The mating end 11 of the movable column 91 is splined. The adjusting sleeve 92 is rotatably connected to the mounting base 4 and coaxial with the movable column 91 in the same group. The inner circumference of the adjusting sleeve 92 has a spline groove that mates with the mating end 11 of the movable column 91. The adjusting sleeve 92 is sleeved on the outer wall of the mating end 11 of the movable column 91. The movement of the movable column 91 in the mounting base 4 allows the movable column 91 to slide axially along the adjusting sleeve 92. Therefore, by rotating the adjusting sleeve 92, the movable column 91 can be driven to rotate, which in turn drives the reversing shaft 7 to rotate. The movable column 91 moves threadedly in the mounting base 4, causing relative axial displacement between the movable column 91 and the adjusting sleeve 92, and between the movable column 91 and the reversing shaft 7.

[0045] The matching method between the adjustment group 9 and the extension shaft 15 is the same as the matching method between the adjustment group 9 and the reversing shaft 7. The inner wall of the extension shaft 15 has a protruding guide protrusion 17, and the outer wall of the movable column 91 that matches the extension shaft 15 has a guide groove 18 for the guide protrusion 17 to slide.

[0046] It should be noted that both movable adjustment sleeves 92 are located near the side edge of the mounting base 4 and on the same side, and the inner cavity of the adjustment sleeve 92 is connected to the outside of the mounting base 4.

[0047] Refer to 3 and Figure 8 The rotating power source 12 is a motor. The output end of the rotating power source 12 is splined and mates with the spline groove of the adjusting sleeve 92. The base of the rotating power source 12 is detachable from the side wall of the mounting base 4 by bolts. When the rotating power source 12 is installed on the mounting base 4, its output end is coaxially inserted into the adjusting sleeve 92, so that the rotation of the output end can cause the adjusting sleeve 92 to rotate. More specifically, the base of the rotating power source 12 has an arc-shaped waist-shaped hole 20. The bolt shank passes through the waist-shaped hole 20 and is then threaded and locked onto the mounting base 4. This allows the base of the rotating power source 12 to be adjusted in installation angle around its own output end axis during installation, so that the output end can be inserted into the adjusting sleeve 92.

[0048] Furthermore, there can be two rotating power sources 12, each connected to one of the two adjusting sleeves 92. Alternatively, there can be a single rotating power source 12, which is then used to adjust the rotation angle of one adjusting sleeve 92 before being disassembled and connected to adjust the rotation angle of the other adjusting sleeve 92. Multiple auxiliary devices can also work together to rotate the power source 12. Specifically, after the current precast base 201 is positioned correctly, the rotating power source 12 corresponding to the current precast base 201 is removed and moved to the mounting base 4 of the next precast base 201 to be constructed. The remaining parts of the auxiliary devices remain connected to the current precast base 201, ensuring that the clamping member 51 and the centering member 6 maintain the stability of the precast base 201 during subsequent steps such as reinforcing cage binding and pouring, until the concrete strength reaches the required level before the auxiliary devices are removed.

[0049] After the rotating power 12 is removed, plugs (not shown in the figure) corresponding to the adjusting sleeve 92 can be installed on the mounting base 4 by bolts. The installation method of the plugs is the same as that of the rotating power 12 base body. The plugs have anti-rotation parts that are inserted into the adjusting sleeve 92 and engaged with the spline groove to further limit the rotation of the adjusting sleeve 92, thereby further improving the stability of the prefabricated base 201 in subsequent processes.

[0050] Reference Figure 3 and Figure 7 Furthermore, each clamping member 51 includes a first connecting rod 511, a first connecting frame 512, and a first roller 513. The first connecting rod 511 extends horizontally, and one end of the first connecting rod 511 is fixed to the first gear 13. The first connecting frame 512 is fixed to the end of the first connecting rod 511 away from the first gear 13, and the first roller 513 is rotatably sleeved on the first connecting frame 512, with the rotation axis of the first roller 513 parallel to the rotation axis of the first gear 13. The clamping member 51 abuts against the bracket 102 through the first roller 513, so that the prefabricated base 201 can be subsequently adjusted in position along its own length. The first connecting rod 511 can be a rod of fixed length, or a rod whose length can be adjusted by telescoping and bolt locking.

[0051] Each centering component 6 includes a second connecting rod 61, a second connecting frame 62, and a second roller 63. One end of the second connecting rod 61 is fixed to the second gear 14 and extends radially along the second gear 14. The second connecting frame 62 is fixed to the end of the second connecting rod 61 away from the second gear 14. The second roller 63 is rotatably sleeved on the second connecting frame 62, and the axis of rotation of the second roller 63 is parallel to the axis of the second gear 14. The centering component 6 abuts against the outer wall of the column 101 via the second roller 63 to facilitate subsequent vertical movement of the prefabricated base 201. The second connecting rod 61 can be a fixed-length rod or a rod whose length can be adjusted by telescoping and bolt locking.

[0052] Furthermore, a locking nut 19 is threaded on the second connecting frame 62. After the position of the precast base 201 is adjusted, the locking nut 19 can be threaded to abut against the end of the second roller 63, thereby limiting the rotation of the second roller 63 through friction to improve the stability of the precast base 201.

[0053] This application also discloses a construction method for a bridge high-column transverse tie beam 2, including the following steps: S1, Precast component processing. The precast columns 1 and precast bases 201 are processed and formed in the prefabrication yard.

[0054] S2, Install precast column 1 on site. Transport precast column 1 to the construction site, hoist and position it for installation, so that the brackets 102 of adjacent columns correspond in position and have the same elevation.

[0055] S3, hoist and position the precast base 201. Hoist the precast base 201 between two adjacent precast columns 1, so that it is supported on two brackets 102. Before hoisting, install an auxiliary device at the center of the bottom of the precast base 201. The brackets 102 are clamped by the clamping assembly 5, and the centering piece 6 abuts against the column 101 to achieve rapid centering and positioning of the precast base 201.

[0056] S4, Tie the reinforcing cage. Tie the reinforcing cage inside the casting cavity 3 of the precast foundation 201.

[0057] S5. Pour concrete and cure. Pour concrete into the pouring cavity 3 of the precast base 201, vibrate and compact it. After the concrete strength reaches the design requirements, the transverse beam 2 structure is formed. Before pouring, fill the outer side of the gap between the end face of the precast base 201 and the column 101 with elastic filler to prevent grout leakage.

[0058] S6, Remove auxiliary devices. After the concrete reaches the required strength, remove the auxiliary devices to complete the construction of the two nodes of the transverse beam.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bridge high-column transverse tie beam joint, characterized in that, include: A prefabricated column, comprising a column body and corbels; the corbels are fixed to the column body; The transverse beams include a precast base and cast-in-place concrete; The precast base has an upward-opening casting cavity that extends through both ends of itself, and the cast-in-place concrete is poured into the casting cavity; The precast base is placed on the corbels of two adjacent columns, and the two ends of the casting cavity are respectively opposite to the two adjacent columns.

2. The bridge high column transverse beam joint according to claim 1, characterized in that: The precast base has a roughened surface on the inner surface of the casting cavity.

3. A bridge high-column transverse beam joint according to claim 1, characterized in that: There is a gap between the end face of the prefabricated base and the outer surface of the column, and the gap is filled with filler material.

4. A bridge high-column transverse beam joint according to claim 3, characterized in that: The bridge high column crossbeam node also includes auxiliary devices, the auxiliary devices including The mounting base is detachably connected to the center of the bottom of the prefabricated base; The clamping assembly comprises two sets, symmetrically mounted on the mounting base and respectively facing the corbels in two adjacent precast columns. Each set of clamping assemblies includes two clamping members, which are symmetrically rotatably connected to the mounting base for jointly clamping the corbels. Two centering components are symmetrically rotatably connected to the mounting base, with their rotation axis perpendicular to the rotation axis of the clamping component. When the two centering components rotate to abut against the outer walls of the two adjacent columns, the distances from both ends of the prefabricated base to the two columns are the same.

5. A bridge high-column transverse beam joint according to claim 4, characterized in that: The auxiliary device also includes The reversing shaft is rotatably connected to the mounting base, and its axis is parallel to the rotation axis of the centering member; A linkage component is disposed between the reversing shaft and the clamping assembly, so that the rotation of the reversing shaft drives the rotation of the clamping assembly. as well as The adjustment group is provided in two sets, one set is engaged with the reversing shaft, and the other set is engaged with the rotation shaft of one of the centering components, so as to adjust the rotation angle between the reversing shaft and the centering component.

6. A bridge high-column transverse beam joint according to claim 5, characterized in that: The adjustment group includes The movable column moves coaxially within the corresponding reversing shaft or centering member, with its two ends, which are far apart from each other, being a threaded end and a mating end, respectively, and the threaded end moves threadedly within the mounting base; as well as An adjusting sleeve is rotatably connected to the mounting base and simultaneously fitted onto the mating end; The mating end is spline-shaped and slides axially with the adjusting sleeve.

7. A bridge high-column transverse beam joint according to claim 6, characterized in that: The auxiliary device also includes a rotational power source, which is detachably connected to the mounting base. The rotational power source has an output end that can be coaxially inserted into the adjusting sleeve, and the rotational power source drives the adjusting sleeve to rotate through its own output end.

8. A bridge high-column transverse beam joint according to claim 4, characterized in that: Each of the clamping components has a first gear fixed coaxially at its rotating end. The first gears of the clamping components in the same group mesh with each other, while the first gears of the clamping components in different groups mesh with each other in pairs.

9. A bridge high-column transverse beam joint according to claim 4, characterized in that: Both the clamping member used to abut against one end of the cow leg and the centering member used to abut against one end of the column are roller structures.

10. A construction method for a bridge high-column transverse tie beam, applicable to the bridge high-column transverse tie beam joint as described in any one of claims 1-9, characterized in that, Includes the following steps: S1, Prefabricated columns and prefabricated bases are processed and formed in the prefabrication yard; S2, the prefabricated columns will be installed on the construction site; S3, hoist the precast base and support it on the corbels of two adjacent precast columns; S4, tie the steel cage inside the precast base; S5, pour concrete into the casting cavity of the precast base, and after the concrete reaches the required strength, a transverse beam structure is formed.

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