A bridge resetting bracket and a bridge resetting method

Abstract

The present invention belongs to the technical field of bridge construction, and discloses a bridge resetting bracket and a bridge resetting method, wherein the bridge resetting bracket comprises a first pedestal, a first support frame, a jacking device, a lifting device, a suspension device and a horizontal adjustment device. The first pedestal is arranged at the bottom end of the pier column, and a preset hole penetrating the first pedestal along the height direction of the first pedestal is arranged in the middle of the first pedestal, and the pier column passes through the preset hole. The first support frame is arranged on the first pedestal, and the first support frame is arranged on both sides of the pier column. The top of the first support frame is provided with a jacking device. The lifting device is arranged at the top of the T-beam. The suspension device comprises a joist and a connector, the joist is arranged at the bottom end of the cap beam, the bottom end of the connector is connected to the joist, and the top end passes through the T-beam and is connected to the lifting device. When resetting the bridge, it is not necessary to dismantle and rebuild the pier column and the cap beam, which reduces the construction cost and safety risk, reduces the working hours, and can better meet the needs of emergency construction.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a bridge resetting bracket and a bridge resetting method. Background Art

[0002] Under the complex geological conditions in mountainous areas, the lower structure of the bridge is damaged due to geological disasters or other reasons, which causes the piers to sink and the upper structure to sink, making the bridge no longer operational. Emergency bridge repair work is urgently needed. At the same time, the rescue project environment is harsh and the construction work area is limited, which brings great safety risks to the subsequent rescue work.

[0003] At present, the conventional repair method is to first set up steel pipe supports, transfer the upper structure load to the steel pipe supports and lift them back to their original positions, and then dismantle and rebuild the piers and cap beams in situ. When this method is used for construction, after the steel support brackets on both sides are set up, the remaining working space between the pier cap beam and the bracket is very limited. It is very inconvenient to dismantle the piers and cap beams and build new ones between these working surfaces, and the construction safety risk is extremely high.

[0004] Therefore, there is an urgent need for a bridge resetting bracket and a bridge resetting method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a bridge resetting bracket and a bridge resetting method, which do not require the removal and reconstruction of piers and cap beams, thereby reducing construction costs and safety risks, reducing working hours, and better meeting the needs of emergency construction.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A bridge resetting bracket, comprising:

[0008] A first capping platform is arranged at the bottom end of the pier column, a preset hole penetrating the first capping platform along the height direction of the first capping platform is arranged in the middle of the first capping platform, and the pier column passes through the preset hole;

[0009] A first support frame, which is arranged on the first support platform, and the first support frame is arranged on both sides of the pier column;

[0010] A lifting device, the top of each of the first support frames is provided with the lifting device, and the lifting device can lift the T-beam;

[0011] A lifting device, which is arranged at the top end of the T beam;

[0012] A suspension device, comprising a joist and a connector, wherein the joist is arranged at the bottom end of the cap beam, the bottom end of the connector is connected to the joist, and the top end passes through the T beam and is connected to the lifting device, and the lifting device can lift the cap beam through the joist;

[0013] A horizontal adjustment device is arranged on the supporting beam and is used to adjust the relative position of the cap beam and the supporting beam along the horizontal direction.

[0014] Preferably, the lifting device comprises:

[0015] A load-bearing main beam, which is arranged at the top end of the T beam;

[0016] A plurality of first jacks are arranged at intervals on the load-bearing main beam, the top end of the connecting member is connected to the first jack, and the first jack can lift the connecting member.

[0017] Preferably, the load-bearing main beam comprises:

[0018] A plurality of transverse distribution beams are arranged at intervals along the longitudinal direction of the bridge;

[0019] A plurality of longitudinal distribution beams are arranged at intervals along the transverse direction of the bridge, and the transverse distribution beams are fixedly connected to the longitudinal distribution beams.

[0020] Preferably, the horizontal adjustment device comprises:

[0021] A slide plate, which is arranged between the cap beam and the support beam;

[0022] a corbel fixed to the joist;

[0023] The second jack has a bottom end that abuts against the corbel, and a top end that can abut against the side surface of the cap beam.

[0024] Preferably, the joist comprises:

[0025] A plurality of joist longitudinal beams are arranged at intervals along the transverse bridge direction, and the bottom ends of the connecting members are fixedly connected to the joist longitudinal beams;

[0026] A plurality of joist cross beams are arranged at intervals along the longitudinal direction of the bridge, and the joist cross beams are fixedly connected to the joist longitudinal beams.

[0027] Preferably, it further comprises a lifting platform erected on the top of the first supporting frame;

[0028] The lifting device comprises:

[0029] A plurality of third jacks are arranged on the lifting platform at intervals along the transverse direction of the bridge and are used to lift the T-beam;

[0030] Auxiliary support components, a plurality of auxiliary support components stacked in sequence along the height direction of the first support frame are provided between the third jack and the jacking platform and between the T-beam and the jacking platform.

[0031] Preferably, the auxiliary support assembly includes a load-bearing tube, an upper connecting member and a lower connecting member, the upper connecting member and the lower connecting member are spaced apart along the axial direction of the load-bearing tube, and two adjacent auxiliary support assemblies are detachably connected by the upper connecting member and the lower connecting member close to each other.

[0032] Preferably, a limiting device is further included, wherein the limiting device includes a plurality of limiting members arranged at intervals along the circumference of the pier, the limiting members are fixed on the first supporting platform, and the limiting members abut against the side surfaces of the pier.

[0033] As a preference, it also includes:

[0034] A second support platform, wherein the second support platform is disposed on both sides of the first support platform;

[0035] A second support frame, wherein the second support platform is provided with the second support frame;

[0036] An auxiliary support platform is erected on the top of the second support frame. The top of the auxiliary support platform is provided with a plurality of auxiliary support components stacked in sequence along the height direction of the second support frame for supporting the T-beam.

[0037] A bridge resetting method, using the bridge resetting bracket as described above to reset the bridge, comprises the following steps:

[0038] S1: erecting the bridge resetting support;

[0039] S2: starting the lifting device to lift the T-beam until the T-beam is reset;

[0040] S3: Start the lifting device to lift the connecting piece, so that the joist beam abuts against the bottom end of the cap beam and applies a lifting force to the cap beam, ensuring that the lifting force of the joist beam on the cap beam can bear the entire deadweight of the cap beam and part of the deadweight of the pier column;

[0041] S4: cutting off the pier at the root of the pier, and chiseling away the concrete at the lower end of the pier while retaining the main reinforcement of the pier;

[0042] S5: starting the lifting device to lift the connecting member, and resetting the cap beam and the pier column to the height index;

[0043] S6: using a horizontal positioning device to reset the cap beam and the pier column to a horizontal position index;

[0044] S7: Arranging the steel bars at the lower end of the pier column, and casting the portion of the pier column located in the preset hole of the first cap together with the first cap;

[0045] S8: After the strength of the newly poured concrete reaches the design requirement, the lifting device is turned on to slowly lower the connecting piece, so that the force on the first cap and the pier increases and the force on the connecting piece decreases, until the deadweight of the cap beam and the pier is completely borne by the first cap;

[0046] S9: Remove the bridge resetting support.

[0047] Beneficial effects of the present invention:

[0048] The bridge resetting bracket provided by the present invention lifts the T-beam through the lifting device arranged on the first support frame on both sides of the first pedestal to reset the T-beam; the lifting device arranged on the T-beam lifts the joist beam through the connecting piece, and the joist beam lifts the cap beam to reset the cap beam and the pier column connected to the cap beam to the designed height; the relative position of the cap beam and the joist beam is adjusted through the horizontal adjustment device, thereby adjusting the position of the cap beam in the horizontal direction, and then resetting the cap beam and the pier column connected to the cap beam in the horizontal direction. The bottom end of the pier column passes through the preset hole on the pedestal, and after the T-beam, the cap beam and the pier column are reset, the bottom end of the pier column is cast as a whole with the first pedestal to complete the resetting of the bridge. The existing piers and cap beams are used for resetting, and there is no need to dismantle and rebuild the piers and cap beams, which saves the cost of dismantling the cap beams and piers and the cost of subsequently re-casting the piers and cap beams, reduces the construction cost, avoids the risk of the block segments sliding and hitting the brackets on both sides when cutting and dismantling the piers and cap beams, reduces the construction safety risk, and avoids the problem of difficult lifting in narrow spaces when cutting and dismantling the piers and cap beams, thereby reducing the construction difficulty. It also reduces the demolition work hours and the work hours for later casting of piers and cap beams, which can better meet the needs of emergency construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a structural schematic diagram of a bridge resetting bracket provided by an embodiment of the present invention;

[0050] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0051] Figure 3 This is a partial structural diagram of the bridge resetting bracket provided by an embodiment of the present invention. Figure 1 ;

[0052] Figure 4 This is a partial structural diagram of the bridge resetting bracket provided by an embodiment of the present invention. Figure 2 ;

[0053] Figure 5 This is a partial structural diagram of the bridge resetting bracket provided by an embodiment of the present invention. Figure 3 ;

[0054] Figure 6It is a structural schematic diagram of a bridge resetting bracket auxiliary support assembly provided by an embodiment of the present invention;

[0055] Figure 7 This is a partial structural diagram of the bridge resetting bracket provided by an embodiment of the present invention. Figure 4 .

[0056] In the figure:

[0057] 100, pier column; 200, T beam; 300, cap beam;

[0058] 11. The first support platform;

[0059] 12. first support frame; 121. first column;

[0060] 13. Lifting device; 131. Third jack; 132. Auxiliary support assembly; 1321. Load-bearing pipe; 1322. Upper connecting piece; 1323. Lower connecting piece;

[0061] 14. Lifting device; 141. Load-bearing main beam; 1411. Transverse distribution beam; 1412. Longitudinal distribution beam; 142. First jack; 143. Upper anchor; 144. Support foot;

[0062] 15. Suspension device; 151. Joist; 1511. Joist longitudinal beam; 1512. Joist cross beam; 152. Connector; 153. Lower anchor;

[0063] 16. Horizontal adjustment device; 161. Slide plate; 162. Corbel; 163. Second jack;

[0064] 17. Lifting platform;

[0065] 18. Limiting device; 181. Limiting member;

[0066] 19. The second support platform;

[0067] 20. second support frame; 201. second column;

[0068] 21. Auxiliary support platform;

[0069] 22. The first pier; 23. The second pier. DETAILED DESCRIPTION

[0070] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0071] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0073] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0074] like Figure 1-3 As shown, this embodiment provides a bridge resetting support, including a first cap 11, a first support frame 12, a jacking device 13, a lifting device 14, a suspension device 15 and a horizontal adjustment device 16. The first cap 11 is arranged at the bottom end of the pier 100, and a preset hole is arranged in the middle of the first cap 11 and passes through the first cap 11 along the height direction of the first cap 11, and the pier 100 passes through the preset hole. The first support frame 12 is arranged on the first cap 11, and the first support frame 12 is arranged on both sides of the pier 100. The top of the first support frame 12 is provided with a jacking device 13, and the jacking device 13 can jack up the T beam 200. The lifting device 14 is arranged at the top of the T beam 200. The suspension device 15 includes a joist 151 and a connector 152. The joist 151 is disposed at the bottom end of the cap beam 300. The bottom end of the connector 152 is connected to the joist 151, and the top end passes through the T beam 200 to connect to the lifting device 14. The lifting device 14 can lift the cap beam 300 through the joist 151. The horizontal adjustment device 16 is disposed on the joist 151 and is used to adjust the relative position of the cap beam 300 and the joist 151 in the horizontal direction.

[0075] The bridge resetting bracket provided in this embodiment lifts the T-beam 200 by the lifting device 13 arranged on the first support frame 12 on both sides of the first pedestal 11, so as to reset the T-beam 200; cuts off the pier 100 at the bottom end of the pier 100, lifts the supporting beam 151 through the connecting piece 152 by the lifting device 14 arranged on the T-beam 200, and the supporting beam 151 lifts the cap beam 300, so that the cap beam 300 and the pier 100 connected to the cap beam 300 are reset to the designed height, and the relative position of the cap beam 300 and the supporting beam 151 is adjusted by the horizontal adjustment device 16, so as to adjust the horizontal position of the cap beam 300, and then reset the cap beam 300 and the pier 100 connected to the cap beam 300 in the horizontal direction. The bottom end of the pier 100 passes through the preset hole on the first pedestal 11. After the T-beam 200, the cap beam 300 and the pier 100 are reset, the bottom end of the pier 100 is cast together with the first pedestal 11 to complete the reset of the bridge. The existing pier 100 and the cap beam 300 are used for reset, and there is no need to dismantle and rebuild the pier 100 and the cap beam 300, which saves the cost of dismantling the cap beam 300 and the pier 100 and the cost of subsequently recasting the pier 100 and the cap beam 300, reduces the construction cost, avoids the risk of the block section sliding and hitting the first support frame 12 on both sides when cutting and removing the pier 100 and the cap beam 300, reduces the safety risk of construction, and avoids the problem of difficult hoisting in the working space when cutting and removing the pier 100 and the cap beam 300, thereby reducing the difficulty of construction. In addition, the demolition time and the time for later casting of the pier 100 and the cap beam 300 are reduced, which can better meet the needs of emergency construction.

[0076] Preferably, a plurality of reserved anchor bars are arranged at intervals along the circumference of the preset hole on the hole wall of the preset hole of the first cap 11, one end of the reserved anchor bar extends into the first cap 11 and is fixedly connected to the main steel bar skeleton of the first cap 11, and the other end extends into the preset hole. When resetting the bridge, after cutting off the root of the pier 100, the concrete at the lower end of the pier 100 is chiseled out on the basis of retaining the main bars of the pier 100, and then the pier 100 is reset by the lifting device 14. After the pier 100 is reset, the main bars at the lower end of the pier 100 are arranged into a trumpet shape, and the reserved anchor bars at both ends of the preset hole in the longitudinal direction of the bridge are connected in pairs by steel bars, and then the reserved anchor bars at both ends of the preset hole in the transverse direction of the bridge are connected in pairs by steel bars along the transverse direction of the bridge. The transverse bridge steel bars connecting the anchor bars reserved at both ends of the preset hole transverse bridge and the longitudinal bridge steel bars connecting the anchor bars reserved at both ends of the preset hole longitudinal bridge are fixed by wire binding, and the transverse bridge steel bars and the reserved anchor bars as well as the longitudinal bridge steel bars and the reserved anchor bars are welded and fixed. The main reinforcement at the lower end of the pier column 100 is inserted into the gap between the transverse bridge steel bars and the longitudinal bridge steel bars, so as to ensure the structural strength of the connection between the pier column 100 and the first cap 11 after the pier column 100 and the first cap 11 are cast as one.

[0077] Alternatively, if Figure 1 As shown, the bridge resetting support provided in this embodiment also includes a plurality of first pile piers 22 arranged at intervals below the first pedestal 11. Specifically, in this embodiment, four first pile piers 22 are arranged, divided into two rows, with two in each row. The two rows of first pile piers 22 are respectively arranged on both sides of the pier column 100 to be reset, and the first pile piers 22 in each row are arranged at intervals along the transverse direction of the bridge. The top of the first pile pier 22 is fixedly connected to the first pedestal 11, and the bottom end extends into the ground. The first pile pier 22 supports the first pedestal 11 to prevent the first pedestal 11 from sinking.

[0078] Alternatively, if Figure 1 , Figure 3 and Figure 4As shown, the lifting device 14 includes a load-bearing main beam 141 and a plurality of first jacks 142. The load-bearing main beam 141 is arranged at the top of the T beam 200. The load-bearing main beam 141 includes a plurality of transverse distribution beams 1411 and a plurality of longitudinal distribution beams 1412. The plurality of transverse distribution beams 1411 are arranged at intervals along the longitudinal bridge direction. The plurality of longitudinal distribution beams 1412 are arranged at intervals along the transverse bridge direction, and the transverse distribution beams 1411 are fixedly connected to the longitudinal distribution beams 1412. Specifically, in the present embodiment, two transverse distribution beams 1411 and two longitudinal distribution beams 1412 are provided, the two transverse distribution beams 1411 are erected on the T beam 200, and the two ends of the longitudinal distribution beam 1412 are respectively erected on the two transverse distribution beams 1411. By arranging a plurality of transverse distribution beams 1411 and a plurality of longitudinal distribution beams 1412, the force of the connecting member 152 on the first jack 142 is dispersed on the T beam 200, so as to avoid damage caused by excessive concentration of force on the T beam 200. Preferably, the transverse distribution beam 1411 and the longitudinal distribution beam 1412 are both made of steel plates wrapped around profiles. A plurality of first jacks 142 are arranged at intervals on the load-bearing main beam 141, and the top of the connecting piece 152 is connected to the first jack 142, and the first jack 142 can lift the connecting piece 152. Specifically, in the present embodiment, four first jacks 142 are provided, and a first jack 142 is provided at each end of the two longitudinal distribution beams 1412, and through holes are provided at the positions where the first jacks 142 are installed on the longitudinal distribution beams 1412, and the top of the connecting piece 152 is connected to the first jack 142, and the bottom passes through the through hole on the longitudinal distribution beam 1412 and is connected to the supporting beam 151. Preferably, the connector 152 is a steel strand, which has a strong structural strength and is easy to connect. The first jack 142 is a through-type jack. The lifting device 14 also includes an upper anchor 143 and a support leg 144. The support leg 144 is arranged at the top of the longitudinal distribution beam 1412. The bottom end of the first jack 142 is fixed to the longitudinal distribution beam 1412 through the support leg 144. The upper anchor 143 is arranged at the top of the first jack 142. The top of the connector 152 is connected to the upper anchor 143. The first jack 142 cooperates with the upper anchor 143 to lift the connector 452. The working principle of the through-type jack lifting the steel strand is a mature existing technology and will not be repeated here. The lifting device 14 in this embodiment also includes a PLC hydraulic synchronous lifting system, which controls the four first jacks 142 to synchronously lift the connector 152, thereby avoiding the deflection of the support beam 151 during the lifting process.

[0079] Alternatively, if Figure 1 and Figure 5As shown, the joist 151 includes a plurality of joist longitudinal beams 1511 and a plurality of joist cross beams 1512. The length direction of the joist longitudinal beams 1511 is along the longitudinal bridge direction, and the plurality of joist longitudinal beams 1511 are arranged at intervals along the transverse bridge direction, and the bottom end of the connector 152 is fixedly connected to the joist longitudinal beams 1511. The length direction of the joist cross beams 1512 is along the transverse bridge direction, and the plurality of joist cross beams 1512 are arranged at intervals along the longitudinal bridge direction, and the joist cross beams 1512 are fixedly connected to the joist longitudinal beams 1511. Specifically, in this embodiment, two joist longitudinal beams 1511 and two joist cross beams 1512 are each provided. The two joist longitudinal beams 1511 are each provided between the two piers 100, and the two ends thereof extend out from the two sides of the transverse bridge direction of the cap beam 300, and the two joist cross beams 1512 are respectively located on the two sides of the transverse bridge direction of the cap beam 300. The suspension device 15 also includes a lower anchor 153, which is arranged at the bottom end of the joist longitudinal beam 1511. Specifically, four lower anchors 153 are arranged, and the four lower anchors 153 are respectively arranged at the two ends of the two joist longitudinal beams 1511. The bottom end of the connecting piece 152 passes through the joist longitudinal beam 1511 and is fixedly connected to the lower anchor 153.

[0080] Alternatively, if Figure 1 and Figure 2 As shown, the horizontal adjustment device 16 includes a slide plate 161, a bracket 162 and a second jack 163. The slide plate 161 is arranged between the cap beam 300 and the joist beam 151. Specifically, a slide plate 161 is arranged between the two joist longitudinal beams 1511 of the joist beam 151 and the cap beam 300 to reduce the friction between the cap beam 300 and the joist longitudinal beam 1511. In this embodiment, the slide plate 161 is a PTFE slide plate. The bracket 162 is fixed on the joist beam 151. The bottom end of the second jack 163 abuts against the bracket 162, and the top end can abut against the side of the cap beam 300. Specifically, in this embodiment, both ends of the two supporting beams 1511 are provided with corbels 162, the bottom end of the second jack 163 is fixed on the corbel 162, and the top end is facing the side close to the cap beam 300. The second jack 163 is used to drive the cap beam 300 to move in the horizontal direction relative to the supporting beam 1511, thereby adjusting the position of the cap beam 300 in the horizontal direction, and then resetting the cap beam 300 and the pier 100 connected to the cap beam 300 in the horizontal direction.

[0081] Alternatively, if Figure 1 and Figure 6As shown, the first support frame 12 includes a plurality of first columns 121 spaced apart in the transverse direction of the bridge. The bridge support provided in this embodiment also includes a jacking platform 17 erected on the top of the first support frame 12. The jacking device 13 includes a plurality of third jacks 131 and auxiliary support assemblies 132. The third jacks 131 are spaced apart in the transverse direction of the bridge on the jacking platform 17 for jacking the T beam 200. A plurality of auxiliary support assemblies 132 stacked in sequence along the height direction of the first support frame 12 are provided between the third jacks 131 and the jacking platform 17 and between the T beam 200 and the jacking platform 17. When the third jack 131 is used to lift the T-beam 200, the third jack 131 lifts the T-beam 200 upward for a certain distance, fills the gap between the T-beam 200 and the lifting platform 17 with the auxiliary support assembly 132 to support the T-beam 200, retracts the jack of the third jack 131, and takes the third jack 131 out from under the T-beam 200, fills the auxiliary support assembly 132 at the position of the original third jack 131, and drops the third jack 131 on the filled auxiliary support assembly 132 to raise the third jack 131, and repeats the above steps until the T-beam 200 is lifted to the set position.

[0082] Alternatively, if Figure 6 As shown, the auxiliary support assembly 132 includes a load-bearing tube 1321, an upper connecting piece 1322 and a lower connecting piece 1323, the upper connecting piece 1322 and the lower connecting piece 1323 are arranged at intervals along the axial direction of the load-bearing tube 1321, and two adjacent auxiliary support assemblies 132 are detachably connected through the upper connecting piece 1322 and the lower connecting piece 1323 close to each other, thereby ensuring that the connection between the two adjacent auxiliary support assemblies 132 is stable.

[0083] Alternatively, if Figure 1 , Figure 3 and Figure 7 As shown, the bridge support provided in this embodiment also includes a limiting device 18, which includes a plurality of limiting members 181 arranged at intervals along the circumference of the pier 100, the limiting members 181 are fixed on the first pedestal 11, and the limiting members 181 abut against the side of the pier 100. It is ensured that the pier 100 does not move after the bottom end of the pier 100 is cut off, avoiding danger during the construction process, and facilitating the subsequent resetting of the pier 100.

[0084] Alternatively, if Figure 1As shown, the bridge support provided in this embodiment also includes a second pedestal 19, a second support frame 20 and an auxiliary support platform 21. The second pedestal 19 is provided on both sides of the first pedestal 11. The second support frame 20 is provided on the second pedestal 19. The auxiliary support platform 21 is erected on the top of the second support frame 20, and a plurality of pads stacked in sequence along the height direction of the second support frame 20 are provided on the top of the auxiliary support platform 21 for supporting the T beam 200. The T beam 200 is supported by the second support frame 20 to avoid damage to the T beam 200 due to concentrated force. Specifically, in this embodiment, the second support frame 20 is provided with ten second columns 201, which are divided into two groups, each group has five second columns 201, and the five second columns 201 of each group are arranged at intervals along the transverse bridge direction. The second pedestal 19 includes two second beams and five second longitudinal beams, and a second beam is provided on the top of each group of columns, and the second longitudinal beam is erected on the two second beams, and a second longitudinal beam is erected on the top of two adjacent columns along the longitudinal bridge direction. Connecting rods are provided between two adjacent second columns 201 , between two adjacent first columns 121 , and between adjacent second columns 201 and first columns 121 , connecting the first support frame 12 and the second support frame 20 as a whole to enhance the stability of the first support frame 12 and the second support frame 20 .

[0085] Alternatively, if Figure 1 As shown, the bridge resetting support provided in this embodiment also includes a plurality of second pile piers 23 arranged at intervals, the second pile piers 23 are arranged below the second cap 19, the top of the second pile pier 23 is fixedly connected to the second cap 19, and the bottom extends into the ground, and the second pile pier 23 plays a role in supporting the second cap 19 to prevent the second cap 19 from sinking. In areas with soft geology, the second pile piers 23 can be arranged below the second cap 19 as temporary support to prevent the second cap 19 from sinking.

[0086] This embodiment also provides a bridge restoration method, using the above-mentioned bridge restoration bracket to restore the bridge to be repaired. The bridge restoration method provided by this embodiment includes the following steps:

[0087] S1: Figure 1 As shown, setting up a bridge resetting support includes the following steps:

[0088] S11: Casting the first cap 11, a preset hole penetrating the cap along the cap height direction is provided in the middle of the first cap 11, the pier 100 to be repaired passes through the preset hole, a plurality of reserved anchor bars are provided on the hole wall of the preset hole at intervals along the circumference of the preset hole, one end of the reserved anchor bar extends into the first cap 11 and is fixedly connected to the main steel bar skeleton of the first cap 11, and the other end extends into the preset hole;

[0089] S12: Cast a second cap 19 on both sides of the first cap 11;

[0090] S13: Build a first support frame 12 on the first support frame 11, build a lifting platform 17 on the top of the first support frame 12, and set up a third jack 131 and an auxiliary support assembly 132 on the lifting platform 17; build a second support frame 20 on the second support frame 19, build an auxiliary support platform 21 on the top of the second support frame 20, and set an auxiliary support assembly 132 on the auxiliary support platform 21; install a lifting device 14 on the T-beam 200; install a scaffolding (not shown) between the two first support frames 12, and build an assembly platform (not shown) on the scaffolding, install a supporting beam 151 on the assembly platform, drill holes on the T-beam 200, and connect the supporting beam 151 to the lifting device 14 through a connecting piece 152; install a limiting device 18 on the first support frame 11.

[0091] S2: Start the lifting device 13 to lift the T-beam 200 until the T-beam 200 is reset. Specifically, the T-beam 200 is first lifted upward for a distance by the third jack 131, and the auxiliary support assembly 132 is filled in the gap between the T-beam 200 and the lifting platform 17 to support the T-beam 200, the jack of the third jack 131 is retracted, and the third jack 131 is taken out from under the T-beam 200, and the auxiliary support assembly 132 is filled at the position of the original third jack 131, and the third jack 131 falls on the filled auxiliary support assembly 132 to cushion the third jack 131, and the above steps are repeated until the T-beam 200 is lifted to the set position. In the process of lifting the T-beam 200, the T-beam 200 is supported by filling the auxiliary support assembly 132 on the auxiliary support platform 21 at the top of the second support frame 20, so as to play the role of auxiliary support of the T-beam 200 and prevent the T-beam 200 from being damaged due to concentrated force.

[0092] S3: Start the lifting device 14 to lift the connecting piece 152, so that the supporting beam 151 abuts against the bottom end of the cap beam 300 and applies a lifting force to the cap beam 300, ensuring that the lifting force of the supporting beam 151 on the cap beam 300 can bear the entire deadweight of the cap beam 300 and part of the deadweight of the pier 100.

[0093] S4: Cut off the pier column 100 at its root, and chisel away the concrete at the lower end of the pier column 100 while retaining the main reinforcement of the pier column 100, release the limiting device 18 on the first pedestal 11, so that the pier column 100 and the cap beam 300 remain vertical under the action of their own weight.

[0094] S5: Start the lifting device 14 to lift the connecting member 152, and reset the cap beam 300 and the pier 100 to the height index.

[0095] S6: Use the horizontal adjustment device 16 to reset the cap beam 300 and the pier 100 on the horizontal position index. Specifically, use the third jack 131 to slowly push the cap beam 300 on the assembly platform, and the cap beam 300 slides relative to the two supporting beam longitudinal beams 1511 of the supporting beam 151 through the slide plate 161 until the cap beam 300 and the pier 100 connected to the cap beam 300 are reset on the horizontal position index.

[0096] S7: Arrange the main reinforcement at the lower end of the pier 100 into a trumpet shape, use steel bars to connect the reserved anchor bars at both ends of the preset hole in the longitudinal direction in pairs, and then use steel bars to connect the reserved anchor bars at both ends of the preset hole in the transverse direction in pairs. The transverse reinforcement connecting the reserved anchor bars at both ends of the preset hole in the transverse direction and the longitudinal reinforcement connecting the reserved anchor bars at both ends of the preset hole in the longitudinal direction are fixed by wire binding, and the transverse reinforcement and the reserved anchor bars, as well as the longitudinal reinforcement and the reserved anchor bars, are welded and fixed. The main reinforcement at the lower end of the pier 100 is inserted into the gap between the transverse reinforcement and the longitudinal reinforcement, and the part of the pier 100 located in the preset hole of the first cap 11 is cast as a whole with the first cap 11. The structural strength of the connection between the pier 100 and the first cap 11 is ensured by inserting the main reinforcement at the lower end of the pier 100 into the gap between the transverse reinforcement and the longitudinal reinforcement.

[0097] S8: After the strength of the newly poured concrete reaches the design requirement, the lifting device 14 is turned on to slowly lower the connecting piece 152, so that the force on the first pedestal 11 and the pier 100 increases and the force on the connecting piece 152 decreases, until the self-weight of the cap beam 300 and the self-weight of the pier 100 are completely borne by the first pedestal 11.

[0098] S9: Remove the bridge reset bracket.

[0099] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bridge resetting bracket, characterized in that: include: A first support platform (11) is arranged at the bottom end of the pier column (100), a preset hole penetrating the first support platform (11) along the height direction of the first support platform (11) is arranged in the middle of the first support platform (11), and the pier column (100) passes through the preset hole; A first support frame (12) is arranged on the first support platform (11), and the first support frame (12) is arranged on both sides of the pier column (100); A lifting device (13), the top end of each of the first support frames (12) is provided with the lifting device (13), and the lifting device (13) is capable of lifting the T-beam (200); A lifting device (14) disposed at the top end of the T-beam (200); A suspension device (15), comprising a joist (151) and a connecting member (152), wherein the joist (151) is arranged at the bottom end of the cap beam (300), the bottom end of the connecting member (152) is connected to the joist (151), and the top end passes through the T beam (200) and is connected to the lifting device (14), and the lifting device (14) can lift the cap beam (300) through the joist (151); A horizontal adjustment device (16), which is arranged on the support beam (151) and is used to adjust the relative position of the cap beam (300) and the support beam (151) in the horizontal direction; The lifting device (14) comprises: A load-bearing main beam (141), which is arranged at the top end of the T beam (200); a plurality of first jacks (142) which are arranged at intervals on the load-bearing main beam (141); the top end of the connecting member (152) is connected to the first jack (142); and the first jack (142) is capable of lifting the connecting member (152); The horizontal adjustment device (16) comprises: A slide plate (161) disposed between the cap beam (300) and the support beam (151); A corbel (162) fixed to the joist (151); The second jack (163) has a bottom end abutting against the corbel (162) and a top end capable of abutting against the side surface of the cap beam (300).

2. The bridge resetting support according to claim 1, characterized in that: The load-bearing main beam (141) comprises: A plurality of transverse distribution beams (1411) are arranged at intervals along the longitudinal direction of the bridge; A plurality of longitudinal distribution beams (1412) are arranged at intervals along the transverse direction of the bridge, and the transverse distribution beam (1411) is fixedly connected to the longitudinal distribution beam (1412).

3. The bridge resetting support according to claim 1, characterized in that: The joist (151) comprises: A plurality of joist longitudinal beams (1511) are arranged at intervals along the transverse direction of the bridge, and the bottom end of the connecting member (152) is fixedly connected to the joist longitudinal beams (1511); A plurality of joist cross beams (1512) are arranged at intervals along the longitudinal direction of the bridge, and the joist cross beams (1512) are fixedly connected to the joist longitudinal beams (1511).

4. The bridge resetting support according to claim 1, characterized in that: It also includes a lifting platform (17) mounted on the top of the first support frame (12); The lifting device (13) comprises: A plurality of third jacks (131) are arranged on the lifting platform (17) at intervals along the transverse direction of the bridge and are used to lift the T-beam (200); Auxiliary support components (132), a plurality of auxiliary support components (132) stacked in sequence along the height direction of the first support frame (12) are provided between the third jack (131) and the lifting platform (17) and between the T-beam (200) and the lifting platform (17).

5. The bridge resetting support according to claim 4, characterized in that: The auxiliary support assembly (132) comprises a load-bearing tube (1321), an upper connecting piece (1322) and a lower connecting piece (1323); the upper connecting piece (1322) and the lower connecting piece (1323) are arranged at intervals along the axial direction of the load-bearing tube (1321); two adjacent auxiliary support assemblies (132) are detachably connected via the upper connecting piece (1322) and the lower connecting piece (1323) that are close to each other.

6. The bridge resetting support according to claim 1, characterized in that: It also includes a limiting device (18), the limiting device (18) including a plurality of limiting members (181) arranged at intervals along the circumference of the pier (100), the limiting members (181) being fixed on the first support platform (11), and the limiting members (181) being in contact with the side surface of the pier (100).

7. The bridge resetting support according to claim 4, characterized in that: Also includes: A second support platform (19), wherein the second support platform (19) is disposed on both sides of the first support platform (11); A second support frame (20), wherein the second support platform (19) is provided with the second support frame (20); An auxiliary support platform (21) is erected on the top of the second support frame (20), and a plurality of pads stacked in sequence along the height direction of the second support frame (20) are provided on the top of the auxiliary support platform (21) for supporting the T-beam (200).

8. A bridge resetting method, characterized in that: The method of resetting a bridge using the bridge resetting bracket according to any one of claims 1 to 7 comprises the following steps: S1: erecting the bridge resetting support; S2: starting the lifting device (13) to lift the T-beam (200) until the T-beam (200) is reset; S3: starting the lifting device (14) to lift the connecting member (152), so that the joist (151) abuts against the bottom end of the cap beam (300) and applies a lifting force to the cap beam (300), ensuring that the lifting force of the joist (151) on the cap beam (300) can bear the entire deadweight of the cap beam (300) and part of the deadweight of the pier (100); S4: cutting off the pier (100) at the root of the pier (100), and chiseling away the concrete at the lower end of the pier (100) while retaining the main reinforcement of the pier (100); S5: starting the lifting device (14) to lift the connecting member (152), and resetting the cap beam (300) and the pier column (100) to the height index; S6: using a horizontal positioning device (16) to reset the cap beam (300) and the pier column (100) at a horizontal position index; S7: Arranging the steel bars at the lower end of the pier column (100), and casting the portion of the pier column (100) located in the preset hole of the first cap (11) and the first cap (11) into one piece; S8: After the strength of the newly poured concrete reaches the design requirement, the lifting device (14) is turned on to slowly lower the connecting piece (152), so that the force on the first cap (11) and the pier (100) increases and the force on the connecting piece (152) decreases, until the deadweight of the cap beam (300) and the deadweight of the pier (100) are completely borne by the first cap (11); S9: Remove the bridge resetting support.

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