Bridge slope-adjusting, jacking and shifting reconstruction device and construction method

Abstract

This invention discloses a device and construction method for bridge slope adjustment, lifting, and relocation modification, including a leveling pad, a leveling plate, a ball joint jack, a horizontal leveling mechanism, and a vertical offset adjustment mechanism. The leveling pad is adapted to the inclination angle of the beam bottom, and its top surface is fixedly connected to the beam bottom, while its bottom surface is positioned opposite to the top surface of the leveling plate. The ball joint jack is installed between the leveling plate and the support. The horizontal leveling mechanism is used to adjust the leveling plate to a horizontal state. The vertical offset adjustment mechanism is used to make the center of the ball joint jack coincide with the center of the support. This invention discloses a device and construction method for bridge slope adjustment, lifting, and relocation modification, which can ensure that the slope adjustment and lifting construction process adaptively eliminates the horizontal component force and eccentricity of the vertical support under the beam.

Description

Technical Field

[0001] This invention relates to the field of bridge jacking and modification technology, and in particular to a device for bridge slope adjustment, jacking and relocation modification. Background Technology

[0002] Continuous beam bridges such as urban viaducts, overpasses, and waterway bridges require slope adjustment, jacking, and relocation modifications to the bridge deck alignment and under-bridge clearance due to upgrades in road grade standards. When the jacking height is large, independent jacking devices are generally used to alternately jack the bridge, achieving force system replacement, meeting the requirements of continuous slope adjustment and jacking operations, and ensuring that the stress state of the beam does not change significantly during the relocation process.

[0003] During the slope adjustment and jacking reconstruction construction, the slope of the beam bottom changes as the jacking height increases. Existing technologies include jacking reconstruction using ball-joint jacks. Ball-joint jacks employ a ball-shaped jacking end with a grooved base, ensuring that the jack maintains a jacking force perpendicular to the beam bottom throughout the jacking process. For example, Chinese patent CN203977296U discloses a device for the overall jacking of a bridge with proportional slope adjustment. This device is located under the bridge to be jacked and includes a hydraulic jacking cylinder, a follow-up jack, and a PLC synchronous control system. The hydraulic jacking cylinder and the follow-up jack are respectively connected to the PLC synchronous control system. The hydraulic jacking cylinder's jacking end has a ball-shaped structure with an adjustable angle. Although the device solves the problem of the jacks always having a lifting force perpendicular to the bottom of the beam during the lifting process, during the alternating lifting of the two independent lifting devices, the bottom of the beam cannot be adaptively leveled by the two lifting systems. As the lifting height increases, the offset between the jack support center and the lower support center at the bottom of the beam increases, and the horizontal component force generated by the jacks also increases, making the support structure prone to overturning. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a bridge slope adjustment and jacking displacement modification device, aiming to solve the problems in the prior art where the two jacking systems cannot achieve adaptive leveling of the beam bottom during the alternating jacking process, and where the offset between the jack support center and the lower support center increases continuously as the jacking height increases, and the horizontal component force generated by the jack also increases, making the support structure prone to overturning risks.

[0005] The present invention achieves the above objectives by adopting the following technical solutions:

[0006] A bridge slope adjustment and jacking relocation modification device is installed between the bottom of the bridge beam and the jacking support. The device includes a leveling pad, a leveling plate, a ball joint jack, a horizontal leveling mechanism, and a vertical adjustment mechanism. The leveling pad is adapted to the inclination angle of the beam bottom, and its top surface is fixedly connected to the beam bottom; its bottom surface is positioned opposite the top surface of the leveling plate. The bottom surface of the leveling plate is positioned opposite one end of the fixed or telescopic end of the ball joint jack, and the other end of the fixed or telescopic end of the ball joint jack acts on the support. The horizontal leveling mechanism includes leveling threaded rods arranged on both sides of the leveling plate, adapted to its vertical position. The matching leveling nut has one end of the leveling threaded rod that passes through the leveling plate and connects to the leveling pad, while the other end is secured to the bottom surface of the leveling plate by the leveling nut. The bottom surface of the leveling plate has downwardly extending first reaction support parts on both sides, and the ball joint jack has upwardly extending second reaction support parts on both sides of the end opposite to the leveling plate. The corresponding first and second reaction support parts are staggered in the horizontal direction and have an adjustment gap. The vertical adjustment mechanism is used to adjust the distance between the corresponding first and second reaction support parts so that the center of the ball joint jack coincides with the center of the support part.

[0007] In this technical solution, a horizontal leveling mechanism is used to level the horizontal plate and ball joint jacks. A vertical eccentricity adjustment mechanism is used to ensure that the center of the ball joint jack coincides with the center of the support during each jacking, thus ensuring that the slope adjustment and jacking construction process adaptively eliminates the horizontal component force and eccentricity of the vertical support under the beam. The horizontal leveling mechanism achieves high-precision adjustment through a threaded connection, improving work efficiency. The leveling pads and leveling blocks are mechanically self-locked to improve the stability of the device. The jacking device can adapt to the slope adjustment and jacking operation requirements of different types of main beams. Furthermore, a modular design combined with a quick-connection method is adopted to shorten the on-site construction operation cycle.

[0008] The working principle of this technical solution is as follows: During the alternating jacking process using two sets of modified devices, initially, the leveling pads of the two devices are adapted to the inclination angle of the beam bottom. When the first jacking device completes the jacking, due to the change in slope (change in the inclination angle of the beam bottom), and since the leveling pads of both devices are fixedly connected to the beam bottom, the leveling plates of both devices are in a non-horizontal state. Furthermore, because the ball joint jack of the first modified device rotates to adapt to the slope angle, the center of the ball joint jack of the first jacking device is offset from the center of the support. At this time, by adjusting the horizontal adjustment mechanism in the second modified device, i.e., adjusting the position of the leveling nuts on both sides on the corresponding leveling threaded rods, the angle between the top surface of the leveling plate and the bottom surface of the leveling pad is adjusted, so that the leveling plate is in a horizontal state, and then the second modified device is driven. The jacking mechanism avoids horizontal forces on the vertical supports under the beam. When the second jacking device completes the jacking, the force system of the two devices is switched. Then, the horizontal adjustment mechanism and vertical offset adjustment mechanism in the first modification device are adjusted, that is, the positions of the leveling nuts on both sides on the corresponding leveling threaded rods are adjusted, thereby adjusting the angle between the top surface of the leveling plate and the bottom surface of the leveling pad, so that the leveling plate is in a horizontal state. At this time, the center of the ball joint jack is parallel to the center of the support. Then, by adjusting the vertical offset adjustment mechanism, that is, adjusting the distance between the corresponding first and second reaction support parts, the opposite end faces of the ball joint jack and the leveling plate slide relative to each other in the horizontal direction until the center of the ball joint jack coincides with the center of the support. This avoids horizontal forces and eccentricity on the vertical supports under the beam during the slope jacking construction process, and realizes the adaptive leveling and eccentricity of the beam bottom of the two jacking systems.

[0009] A further technical solution involves a vertical adjustment mechanism comprising an adjustment threaded rod penetrating the corresponding first and second reaction support parts, and an adjustment nut cooperating with it. The two ends of the adjustment threaded rod are respectively clamped to the first and second reaction support parts via the adjustment nuts. In this technical solution, the leveling pad, leveling block, and ball joint jack are mechanically self-locked to achieve overall stability. Simultaneously, vertical adjustment also employs a threaded method for high-precision adjustment. The adjustment process involves loosening the adjustment nut to allow the opposite end faces of the ball joint jack and the adjustment plate to slide horizontally until the center of the ball joint jack coincides with the center of the support part. Then, the adjustment nut is adjusted to clamp the corresponding first and second reaction support parts, preventing horizontal force and eccentricity of the vertical support under the beam during the slope adjustment and lifting construction process, thus achieving adaptive leveling of the beam bottom in both lifting systems.

[0010] A further technical solution is that the device further includes an adaptive leveling section, which is installed between the leveling pad and the leveling plate after the ball joint jack has completed one lifting operation. In this technical solution, the adaptive leveling section can be designed according to the distance and angle between the leveling pad and the leveling plate after leveling, so that the leveling plate is in a horizontal state when lifting again.

[0011] A further technical solution is to adapt the leveling part to a wedge-shaped pad.

[0012] A further technical solution is that the fixed end of the ball joint jack is positioned opposite to the bottom surface of the adjusting plate, and the telescopic end acts on the support.

[0013] A further technical solution is that the telescopic end of the ball joint jack includes a matching ball head and a groove structure.

[0014] A further technical solution involves providing a slide rail and a groove on the opposite end faces of the adjusting plate and the ball joint jack, which mate along the longitudinal direction of the bridge. In this technical solution, the slide rail and groove structure can restrict the relative movement between the adjusting plate and the ball joint jack beyond the horizontal direction.

[0015] A further technical solution is that the bottom surface of the leveling pad is a pre-embedded steel plate, the leveling threaded rod passes through the leveling plate and the pre-embedded steel plate, and the two ends are clamped by leveling nuts.

[0016] A further technical solution is that the pre-embedded steel plate and the adjusting plate are provided with strip-shaped through holes in the direction of the bridge, and the adjusting threaded rod passes through the strip-shaped through holes.

[0017] A method for bridge slope adjustment and relocation reconstruction, comprising the aforementioned device, the method comprising the following steps:

[0018] A) Layout of the modification device: The modification device is arranged on the adjacent support parts respectively, so that the center of the ball joint jack coincides with the center of the corresponding support part;

[0019] B) Driving the first set of modified devices to lift: The ball joint jacks driving the first set of modified devices extend their telescopic ends in stages according to proportional data to carry out lifting operations and lock them. The ball joints rotate to adaptively adjust the slope angle.

[0020] C) Leveling the second set of modified devices: The leveling plate of the second set of modified devices is not horizontal. By adjusting the leveling nut on its leveling mechanism, the angle between the leveling pad and the leveling plate is changed, so that the leveling plate is in a horizontal state. An appropriate leveling part is installed between the leveling pad and the leveling plate.

[0021] D) Drive the second set of modification devices to lift: Install steel pads between the ball joint jack and the support part of the second set of modification devices, drive the ball joint jack to extend the telescopic end proportionally and lock it, and complete the force system replacement of the two sets of modification devices.

[0022] E) Leveling the first set of modified devices: Drive the ball joint jack of the first set of modified devices to return to the telescopic end. Its leveling block is not horizontal. Adjust the leveling nut on the horizontal leveling mechanism to make it horizontal. Install the appropriate leveling part between the leveling pad and the leveling plate.

[0023] F) Vertical adjustment of the first set of modification devices: Adjust the adjustment nut on the vertical adjustment mechanism, push the ball joint jack to slide relative to the adjustment plate in the horizontal direction until the center of the ball joint jack coincides with the center of the support part, and then adjust the adjustment nut to clamp the corresponding first reaction force support part and second reaction force support part.

[0024] G) Drive the first set of modification devices to lift: Install steel pads between the ball joint jack and the support part of the first set of modification devices, drive the ball joint jack to extend the telescopic end proportionally and lock it, and complete one slope adjustment height lifting cycle.

[0025] H) Repeat steps B to G to complete the slope adjustment height lifting cycle until the slope adjustment height is in place, then carry out pier modification to complete the bridge slope adjustment lifting and relocation modification.

[0026] The beneficial effects of this invention are:

[0027] This invention provides a bridge slope adjustment, jacking, and relocation modification device and construction method. By employing a horizontal leveling mechanism, the horizontal plate and ball joint jacks can be leveled. A vertical offset mechanism ensures that the center of the ball joint jack coincides with the center of the support during each jacking operation, ensuring that the slope adjustment and jacking construction process adaptively eliminates the horizontal component force and eccentricity of the vertical support under the beam. The vertical offset mechanism and the horizontal leveling mechanism achieve high-precision adjustment through a threaded connection, improving work efficiency. The leveling pads, leveling blocks, and ball joint jacks are mechanically self-locked, achieving overall stability among the three components. The jacking device can adapt to the slope adjustment and jacking requirements of different types of main beams. Furthermore, the modular design combined with a quick-connection method shortens the on-site construction cycle. Attached Figure Description

[0028] Figure 1 Here is a schematic diagram of the structure of the modification device described in this invention at the initial moment.

[0029] Figure 2 Here is a structural diagram of construction step C of the modification device described in this invention.

[0030] Figure 3 Here is a structural diagram of construction step F of the modification device described in this invention.

[0031] Figure 4 See: A schematic diagram of the structure of the bottom surface of the leveling pad of the modification device described in this invention.

[0032] Figure 5 See: A schematic diagram of the structure of the bottom surface of the adjustment plate of the modification device described in this invention.

[0033] Figure 6 See: A schematic diagram of the top surface of the fixed end of the jack in the modified device of the present invention.

[0034] In the picture:

[0035] 1. Main beam; 10. First support part; 11. First leveling pad; 111. First embedded steel plate; 110. Pad strip-shaped through hole; 12. First leveling plate; 121. First reaction support part; 120. Leveling plate strip-shaped through hole; 122. Slide rail; 13. First ball joint jack; 131. First jack fixed end; 1311. Second reaction support part; 1312. Slide groove; 132. First jack telescopic end; 141. First leveling threaded rod; 142. First leveling nut; 151. First offset adjustment... 152. Threaded rod; 16. First adjusting nut; 17. First adaptable leveling part; 20. First steel pad; 12. Second support part; 12. Second leveling pad block; 121. Second embedded steel plate; 22. Second adjusting plate; 23. Second ball joint jack; 231. Second jack fixed end; 232. Second jack telescopic end; 241. Second leveling threaded rod; 242. Second leveling nut; 251. Second adjusting threaded rod; 252. Second adjusting nut; 26. Second adaptable leveling part; 27. Second steel pad. Detailed Implementation

[0036] The following is in conjunction with the appendix Figures 1 to 6 The present invention will be described in detail below with reference to specific embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] like Figure 1 , 4As shown in Figure 6, this embodiment provides a bridge slope adjustment and jacking displacement modification device, installed between the bottom of the main beam 1 of the bridge and the first support part 10 for jacking; the device includes a first leveling pad 11, a first leveling plate 12, a first ball joint jack 13, a first horizontal leveling mechanism, and a first vertical adjustment mechanism; the first leveling pad 11 is adapted to the inclination angle of the bottom of the main beam 1, and its top surface is fixedly connected to the bottom of the main beam 1; the bottom surface of the first leveling pad 11 is a horizontal plane and is arranged opposite to the top surface of the first leveling plate 12; the bottom surface of the first leveling plate 12 is arranged opposite to one end of the fixed end or the telescopic end of the first ball joint jack 13, and the other end of the fixed end or the telescopic end of the first ball joint jack 13 acts on the first support part 10; the first horizontal leveling mechanism includes first leveling pads arranged on both sides of the first leveling plate 12. The system includes a threaded rod 141 and a matching first leveling nut 142. One end of the first leveling threaded rod 141 passes through the first leveling plate 12 and is connected to the first leveling pad 11. The other end is engaged with the bottom surface of the first leveling plate 12 by the first leveling nut 142. The bottom surface of the first leveling plate 12 has downwardly extending first reaction support parts 121 on both sides. The first ball joint jack 13 has upwardly extending second reaction support parts 1311 on both sides of the end opposite to the first leveling plate 12. The corresponding first reaction support parts 121 and second reaction support parts 1311 are staggered in the horizontal direction and have an adjustment gap. The first vertical adjustment mechanism is used to adjust the distance between the corresponding first reaction support parts 121 and second reaction support parts 1311 so that the center of the first ball joint jack 13 coincides with the center of the first support part 10.

[0038] Specifically, in this embodiment, the first leveling pad 11 is fixedly connected to the chemical anchor bolts implanted in the main beam 1 and is formed by injecting high-strength grout. A first embedded steel plate 111 is provided at the bottom of the first leveling pad 11. A first leveling threaded rod 141 passes through the first leveling plate 12 and the embedded steel plate 111, with both ends clamped by first leveling nuts 142. The first horizontal leveling mechanism is specifically distributed at the four corners of the first leveling plate 12, and its number and position can be set according to specific working conditions. The bottom surface of the first leveling plate 12 is arranged opposite to the fixed end 131 of the first jack. The telescopic end 132 of the first jack acts on the first support part 10. The telescopic end 132 of the first jack specifically includes a ball head and a groove structure, with the ball head rotating along the groove. The first vertical adjustment mechanism has… The body includes a first adjusting threaded rod 151 that passes through the first reaction support part 121 and the second reaction support part 1311, and a first adjusting nut 152 that cooperates with it. The two ends of the first adjusting threaded rod 151 clamp the first reaction support part 121 and the second reaction support part 131 respectively through the first adjusting nut 152. The first reaction support part 121 and the second reaction support part 131 are specifically rib-shaped structures. Specifically, the lateral dimension of the first adjusting plate 12 is larger than that of the first jack fixed end 131, that is, the two second reaction support parts 131 are arranged between the two first reaction support parts 121, and the adjacent first reaction support parts 121 and second reaction support parts 131 are spaced apart so that the end faces of the first jack fixed end 131 and the first adjusting plate 12 have space for relative sliding.

[0039] The working principle of this embodiment is as follows: During the alternating jacking process using two sets of modified devices, initially, the leveling pads of the two sets of devices are adapted to the inclination angle of the beam bottom. During the alternating jacking process, the first leveling plate 12 may be in a non-horizontal state. In order to adapt to the slope angle, the ball joint of the first ball joint jack 13 rotates, causing the center of the first ball joint jack 13 to deviate from the center of the first support part 10. This can be achieved by adjusting the first horizontal adjustment mechanism and the first vertical adjustment mechanism, that is, by adjusting the position of the first leveling nuts 142 on both sides on the corresponding first leveling threaded rods 141, thereby adjusting the angle between the top surface of the first leveling plate 12 and the bottom surface of the first leveling pad 11, so that the first leveling plate 12 is level. In this state, the center of the first ball joint jack 13 is parallel to the center of the support. Then, by adjusting the first vertical adjustment mechanism, that is, adjusting the distance between the corresponding first reaction support 121 and second reaction support 1311, specifically by loosening the first adjustment nut 152 so that the end face opposite to the first adjustment plate 12 slides in the horizontal direction until the center of the first ball joint jack 13 coincides with the center of the first support 10. Then, the first adjustment nut 152 is adjusted to clamp the corresponding first reaction support 121 and second reaction support 1311 to avoid the horizontal component force and eccentricity of the vertical support under the beam during the slope jacking construction process, so as to realize the adaptive leveling of the beam bottom of the two jacking systems. This embodiment employs a first horizontal leveling mechanism to achieve leveling of the first horizontal plate 12 and the first ball joint jack 13. A first vertical adjustment mechanism ensures that the center of the first ball joint jack 13 coincides with the center of the first support part 10 during each jacking operation, thus adaptively eliminating the horizontal component force and eccentricity of the vertical support under the beam during the slope adjustment and jacking construction process. The first horizontal leveling and first vertical adjustment mechanisms achieve high-precision adjustment via threads, improving work efficiency. Mechanical self-locking between the first leveling pad 11, the first leveling block 12, and the first ball joint jack 13 enhances the stability of the device. The jacking device can adapt to the slope adjustment and jacking requirements of different types of main beams 1. Furthermore, a modular design combined with a quick-connect method shortens the on-site construction cycle.

[0040] In another embodiment, based on the above embodiment, a first adaptive leveling part 16 is further included. The first adaptive leveling part 16 is installed between the first leveling pad 11 and the first leveling plate 12 after the first ball joint jack 13 completes one lifting operation. In specific implementation, the first adaptive leveling part can be designed according to the distance and angle between the first leveling pad 11 and the first leveling plate 12 after leveling. Its structure can be a wedge-shaped pad, so that the first leveling plate 12 is in a horizontal state when lifting again.

[0041] In another embodiment, based on the above embodiment, the first adjusting plate 12 and the first jack fixed end 131 are provided with a first slide rail 122 and a first slide groove 1312 that cooperate in the longitudinal direction of the bridge. The cooperation structure of the first slide rail 122 and the first slide groove 1312 can restrict the relative movement between the first adjusting plate 12 and the first ball joint jack 13 in the horizontal direction. The specific number of slide rails and slide grooves can be set according to the structural size and component size, and is not limited here.

[0042] In another embodiment, based on the above embodiment, the first embedded steel plate 111 is provided with a pad-shaped through hole 110 in the direction of the bridge, and the first adjusting plate 12 is provided with an adjusting plate-shaped through hole 120 in the direction of the bridge. The first leveling threaded rod 141 passes through the corresponding through hole, which can prevent the first leveling threaded rod 141 from interfering when the first embedded steel plate 111 and the first adjusting plate 12 are relatively displaced.

[0043] The above embodiments exemplify the specific structure of the first vertical adjustment mechanism, the specific connection method between the first leveling pad 11 and the main beam 1, and the connection method between the first leveling threaded rod 141 and the first leveling pad 11. In other embodiments or practical applications, other structures and connection methods can be used instead, for example:

[0044] The first vertical adjustment mechanism can also adjust the distance between the corresponding first reaction support 121 and second reaction support 1311 by means of hydraulic cylinders, lead screws, etc.; the first leveling pad 11 can also be fixed to the bottom of the beam by welding, cement, etc.; the first leveling threaded rod 141 can also be fixedly connected to the first leveling pad 11, and the leveling of the first leveling plate 12 can be achieved by adjusting the first leveling nut 142 below the first leveling plate 12. In addition, the first ball joint jack 13 can also be arranged with the first jack telescopic end 132 facing the bottom surface of the first leveling plate 12, and the first jack fixed end 131 acts on the first support 10.

[0045] Another embodiment provides a bridge slope adjustment and displacement reconstruction construction method based on the above embodiment, which also includes a second set of slope adjustment and displacement reconstruction device with the same structure as the above embodiment. The device specifically includes a second leveling pad 21, a second leveling plate 22, a second ball joint jack 23, a second horizontal leveling mechanism and a second vertical deviation adjustment mechanism.

[0046] The second leveling pad 21 is adapted to the inclination angle of the bottom of the main beam 1, and its top surface is fixedly connected to the bottom of the main beam 1. The bottom surface of the second leveling pad 21 is horizontal and is arranged opposite to the top surface of the second leveling plate 22. The bottom surface of the second leveling plate 22 is arranged opposite to the fixed end 231 of the second jack, and the telescopic end 232 of the second jack acts on the second support part 20. The second horizontal leveling mechanism includes a second leveling threaded rod 241 arranged on both sides of the second leveling plate 22 and a second leveling nut 242 adapted to it. One end of the second leveling threaded rod 241 passes through the second leveling plate 22 and is connected to the second leveling pad 21, and the other end is snapped into the bottom of the second leveling plate 22 by the second leveling nut 242. The second adjusting plate 22 has downwardly extending first reaction support parts on both sides of its bottom surface, and the second ball joint jack 23 has upwardly extending second reaction support parts on both sides of its opposite end to the second adjusting plate 22. The corresponding first reaction support parts and second reaction support parts are staggered in the horizontal direction and have an adjustment gap. The second vertical adjustment mechanism includes a second adjustment threaded rod 251 that passes through the corresponding first reaction support part and second reaction support part, and a second adjustment nut 252 that cooperates with it. The two ends of the second adjustment threaded rod 251 respectively clamp the first reaction support part and the second reaction support part through the second adjustment nut 252, so that the center of the second ball joint jack 23 coincides with the center of the second support part 10.

[0047] The construction method includes the following steps:

[0048] A) Installation of the modification equipment: such as Figure 1 As shown, a first set of modification devices and a second set of modification devices are respectively arranged on the adjacent first support part 10 and second support part 20, so that the center of the first ball joint jack 13 and the second ball joint jack 23 coincide with the first support part 10 and the second support part 20 respectively; at the initial moment, the top surface of the first leveling pad 11 and the second leveling pad 21 is adapted to the inclination angle of the bottom surface of the main beam 1, and the bottom surface of the first leveling pad 11 and the second leveling pad 21 is in a horizontal state;

[0049] B) Drive the first ball joint jack 13 to lift: (as follows) Figure 2 As shown, the first ball joint jack 13 is driven to extend the first jack telescopic end 132 in stages according to the proportional data to carry out the lifting operation and lock it. Its ball joint rotation adaptively adjusts the slope angle. At this time, due to the slope adjustment and lifting, the tilt angle of the beam bottom changes, which causes the horizontal projection of the support center of the first ball joint jack 13 to change, resulting in eccentricity with the center of the first support part 10 and a horizontal component force. Since the second leveling pad 21 is fixedly connected to the bottom of the beam, and the second leveling plate 22 is mechanically connected to the second leveling pad 21 through the second horizontal leveling mechanism, the second leveling plate 22 is also in a non-horizontal state.

[0050] C) Leveling the second adjustment plate 22: as follows Figure 2 As shown, the second leveling plate 22 is not horizontal. By adjusting the second leveling nut 242 on the second leveling mechanism, the angle between the second leveling pad 21 and the second leveling plate 22 is changed, so that the second leveling plate 22 is in a horizontal state, and the second adaptive leveling part 26 is installed between the second leveling pad 21 and the second leveling plate 22.

[0051] D) Drive the second ball joint jack 23 to lift: Install the second steel pad 27 between the second ball joint jack 23 and the second support part 20, drive the second ball joint jack 23 to extend the second jack telescopic end 232 proportionally and lock it, and complete the force system replacement of the two sets of modification devices; at this time, the main beam 1 can be supported by the second set of modification devices.

[0052] E) Leveling the first leveling plate: Drive the first jack extension end 132 back to the return stroke. The first leveling block 12 is not horizontal. Adjust the first leveling nut 142 on the first horizontal leveling mechanism to make the first leveling plate 12 horizontal. Install the first adaptive leveling part 16 between the first leveling pad 11 and the first leveling plate 11.

[0053] F) Vertical adjustment of the first ball joint jack 13: Adjust the first adjustment nut 152 on the first vertical adjustment mechanism, push the fixed end 131 of the first jack to slide relative to the first adjustment plate 12 in the horizontal direction until the center of the first ball joint jack 13 coincides with the center of the first support part 10, and then adjust the first adjustment nut 152 to clamp the corresponding first reaction force support part and second reaction force support part;

[0054] G) Drive the first ball joint jack 13 to lift: (e.g.) Figure 3 As shown, a first steel pad 17 is installed between the first jack extension end 132 and the first support part 10, driving the first ball joint jack 13 to extend the telescopic end proportionally and lock it, completing one slope height lifting cycle;

[0055] H) Repeat steps B to G to complete the slope adjustment height lifting cycle until the slope adjustment height is in place, then carry out pier modification to complete the bridge slope adjustment lifting and relocation modification.

[0056] The construction method of this embodiment can achieve leveling of the horizontal plate and ball joint jack through the horizontal leveling mechanism, and can achieve the center of the ball joint jack and the center of the support part to coincide during each jacking by adopting the vertical adjustment mechanism, so as to ensure that the slope adjustment and jacking construction process adaptively eliminates the horizontal component force and eccentricity of the vertical support under the beam.

[0057] This invention provides a bridge slope adjustment, jacking, and relocation modification device and construction method. By employing a horizontal leveling mechanism, the horizontal plate and ball joint jacks can be leveled. A vertical offset mechanism ensures that the center of the ball joint jack coincides with the center of the support during each jacking operation, ensuring that the slope adjustment and jacking construction process adaptively eliminates the horizontal component force and eccentricity of the vertical support under the beam. The vertical offset mechanism and the horizontal leveling mechanism achieve high-precision adjustment through a threaded connection, improving work efficiency. The leveling pads, leveling blocks, and ball joint jacks are mechanically self-locked, achieving overall stability among the three components. The jacking device can adapt to the slope adjustment and jacking requirements of different types of main beams. Furthermore, the modular design combined with a quick-connection method shortens the on-site construction cycle.

Claims

1. A bridge slope adjustment and jacking relocation modification device, installed between the bottom of the bridge beam and the jacking support; characterized in that, The device includes a leveling pad, a leveling plate, a ball joint jack, a horizontal leveling mechanism, and a vertical deviation adjustment mechanism. The leveling pad is adapted to the inclination angle of the beam bottom and its top surface is fixedly connected to the beam bottom, while its bottom surface is arranged opposite to the top surface of the leveling plate; the bottom surface of the leveling plate is arranged opposite to one end of the fixed end or telescopic end of the ball joint jack, and the other end of the fixed end or telescopic end of the ball joint jack acts on the support part. The horizontal leveling mechanism includes leveling threaded rods arranged on both sides of the leveling plate and leveling nuts adapted to them. One end of the leveling threaded rod passes through the leveling plate and is connected to the leveling pad, and the other end is clamped to the bottom surface of the leveling plate by the leveling nut. The bottom surface of the adjusting plate is provided with downwardly extending first reaction force support parts on both sides, and the ball joint jack is provided with upwardly extending second reaction force support parts on both sides of the end opposite to the adjusting plate. The corresponding first reaction force support parts and second reaction force support parts are staggered in the horizontal direction and have a gap. The vertical adjustment mechanism is used to adjust the distance between the corresponding first and second reaction force support parts so that the center of the ball joint jack coincides with the center of the support part.

2. The bridge slope adjustment and relocation modification device according to claim 1, characterized in that, The vertical adjustment mechanism includes an adjustment threaded rod that passes through the first reaction support and the second reaction support, and an adjustment nut that cooperates with it. The two ends of the adjustment threaded rod are respectively clamped to the first reaction support and the second reaction support by the adjustment nut.

3. The bridge slope adjustment and relocation modification device according to claim 1, characterized in that, The device also includes an adaptive leveling unit, which is installed between the leveling pad and the leveling plate after the ball joint jack has completed one lifting operation.

4. The bridge slope adjustment and relocation modification device according to claim 3, characterized in that, The adaptive leveling part is a wedge-shaped pad.

5. A bridge slope adjustment and relocation modification device according to claim 1, characterized in that, The fixed end of the ball joint jack is positioned opposite the bottom surface of the adjusting plate, while the telescopic end acts on the support.

6. A bridge slope adjustment and relocation modification device according to claim 1, characterized in that, The telescopic end of the ball joint jack includes a matching ball head and a groove structure.

7. A bridge slope adjustment and relocation modification device according to claim 1, characterized in that, The adjusting plate and the ball joint jack are provided with a slide rail and a slide groove that cooperate along the bridge direction on the opposite end face.

8. A bridge slope adjustment and relocation modification device according to claim 1, characterized in that, The bottom surface of the leveling pad is a pre-embedded steel plate, and the leveling threaded rod passes through the leveling plate and the pre-embedded steel plate. The two ends are clamped by leveling nuts.

9. A bridge slope adjustment and relocation modification device according to claim 8, characterized in that, The embedded steel plate and the adjusting plate are provided with strip-shaped through holes along the bridge direction, and the adjusting threaded rod passes through the strip-shaped through holes.

10. A method for constructing a bridge slope adjustment and relocation project, characterized in that, Including the apparatus of claim 2, the construction method includes the following steps: A) Layout of the modification device: The modification device is arranged on the adjacent support parts respectively, so that the center of the ball joint jack coincides with the center of the corresponding support part; B) Driving the first set of modified devices to lift: The ball joint jacks driving the first set of modified devices extend their telescopic ends in stages according to proportional data to carry out lifting operations and lock them. The ball joints rotate to adaptively adjust the slope angle. C) Leveling the second set of modified devices: The leveling plate of the second set of modified devices is not horizontal. By adjusting the leveling nut on its leveling mechanism, the angle between the leveling pad and the leveling plate is changed, so that the leveling plate is in a horizontal state. An appropriate leveling part is installed between the leveling pad and the leveling plate. D) Drive the second set of modification devices to lift: Install steel pads between the ball joint jack and the support part of the second set of modification devices, drive the ball joint jack to extend the telescopic end proportionally and lock it, and complete the force system replacement of the two sets of modification devices. E) Leveling the first set of modified devices: Drive the ball joint jack of the first set of modified devices to return to the telescopic end. Its leveling block is not horizontal. Adjust the leveling nut on the horizontal leveling mechanism to make it horizontal. Install the appropriate leveling part between the leveling pad and the leveling plate. F) Vertical adjustment of the first set of modification devices: Adjust the adjustment nut on the vertical adjustment mechanism, push the ball joint jack to slide relative to the adjustment plate in the horizontal direction until the center of the ball joint jack coincides with the center of the support part, and then adjust the adjustment nut to clamp the corresponding first reaction force support part and second reaction force support part. G) Drive the first set of modification devices to lift: Install steel pads between the ball joint jack and the support part of the first set of modification devices, drive the ball joint jack to extend the telescopic end proportionally and lock it, and complete one slope adjustment height lifting cycle. H) Repeat steps B to G to complete the slope adjustment height lifting cycle until the slope adjustment height is in place, then carry out pier modification to complete the bridge slope adjustment lifting and relocation modification.

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