Modularized self-climbing pressure-maintaining self-adjusting telescopic pier and construction method thereof

Abstract

The modular self-climbing pressure-maintaining self-adjusting telescopic pier comprises a plurality of standard pier modules with different heights and a telescopic pier module, the standard pier modules and the telescopic pier module are connected through flanges from bottom to top to form an integral pier, and the telescopic pier module is located at the top; the top of the telescopic pier module is open and provided with a sleeve cap, and the top of the sleeve cap supports an upper bridge structure through a support. A remote control self-locking jack and a top supporting sleeve cap are arranged in the telescopic pier module, and a pressure sensor is arranged at the top of the sleeve cap and located at the bottom of the support. A plurality of modular steel pier sections are designed, and the modular piers with different heights can be assembled to adapt to different pier heights; the bridge pier sections are connected through flanges, and the installation speed is high; the jack is arranged on the ground for gradually jacking and is mounted from the lower part, so that high-place operation of personnel can be avoided, and large machinery is not needed; the jack and the pressure sensor are arranged on the top section, the device can adapt to differential settlement of a foundation, support disengaging is avoided, and normal passing of an emergency bridge is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a modular self-climbing, pressure-maintaining, self-adjusting telescopic pier and a construction method thereof. Background Art

[0002] When disasters such as earthquakes, floods, and mudslides occur, existing bridges and piers are prone to damage, resulting in traffic interruptions. It is necessary to promptly build temporary bridges, repair damaged piers, and quickly repair damaged bridges to ensure traffic. In the process of disaster rescue, secondary damage is very likely to occur. Therefore, disaster rescue bridges must have a certain degree of self-adjustment ability to adapt to foundation settlement. In addition, since the conditions at the rescue site are relatively difficult, it is difficult to get electricity and large machinery is difficult to enter, which also puts higher design requirements on rescue bridges.

[0003] The invention patent with the publication number CN117328341A proposes a repair pier based on a telescopic pier body, including N sections of tubular pier body, the upper section of the pier body is set in the next section of the pier body adjacent to it; in addition, it also includes a lifting and driving mechanism for driving the pier body above the first section to vertically lift and lower to realize the telescopic movement of the repair pier, a limit guide mechanism for telescopic movement, and a positioning connection mechanism for fixing the upper section of the pier body with the next section of the pier body after it is lifted to a preset position. The structure of the repair pier is relatively complex, the workload of on-site assembly is extremely large, and it needs to use winches and other equipment for mechanical installation, which requires manual high-altitude work and is relatively dangerous. When the disaster causes secondary damage and the foundation settles during construction, it cannot adapt to the foundation settlement.

[0004] Therefore, it is necessary to propose new measures to overcome the above-mentioned defects. Summary of the invention

[0005] The purpose of the present invention is to provide a modular self-climbing pressure-maintaining self-adjusting telescopic pier and a construction method thereof, so as to solve the problems existing in the existing emergency repair piers, such as complex structure, requirement of large-scale mechanical equipment, large assembly workload, dangerous high-altitude operations, and inability to adapt to foundation settlement.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The modular self-climbing pressure-maintaining self-adjusting telescopic pier includes a plurality of standard pier modules of different heights and a telescopic pier module, which are connected to each other from bottom to top through flanges to form an integral pier, and the telescopic pier module is located at the top;

[0008] The top of the telescopic pier module is open and provided with a cap, and the top of the cap supports the upper bridge structure through a support;

[0009] A remote-controlled self-locking jack is arranged in the telescopic pier module, the top of the remote-controlled self-locking jack supports the sleeve cap, and a pressure sensor is arranged on the top of the sleeve cap and is located at the bottom of the support.

[0010] Further, the telescopic pier module comprises a bottom plate and a vertical sleeve fixedly connected to each other, and the remote-controlled self-locking jack is located on the bottom plate inside the vertical sleeve;

[0011] The sleeve cap comprises a top plate and a vertical insert pipe which are fixedly connected to each other, the vertical insert pipe is inserted downward into the vertical sleeve, and the top of the remote control self-locking jack supports the top plate.

[0012] Furthermore, the standard pier module includes a vertical tube and a connecting plate, and the two connecting plates are fixedly connected to the top and bottom sides of the vertical tube respectively.

[0013] Furthermore, vertical holes are provided on the bottom plate of the telescopic pier module and the edges of the connecting plates of the standard pier module, and the telescopic pier module and the standard pier module, as well as two vertically adjacent standard pier modules, are connected to each other via flanges and bolts.

[0014] Furthermore, a reinforcing rib is provided in the standard pier module, which is located at the connection between the connecting plate and the vertical tube and is perpendicular to both.

[0015] On the other hand, a construction method of the modular self-climbing pressure-maintaining self-adjusting telescopic pier as described is provided, the method comprising:

[0016] Set up a mounting bracket at the integral pier position and deploy a jacking jack under the mounting bracket;

[0017] Use flanges and bolts to connect the telescopic pier module and the first section standard pier module;

[0018] Lift the first section of the standard pier module with a jacking jack, install a hoop on the first section of the standard pier module to the specified height, and support the hoop on the upper part of the mounting bracket;

[0019] The jacking jack is returned to its position, and the second section standard pier module is lifted by the jacking jack until it contacts the first section standard pier module, and then the first section standard pier module and the second section standard pier module are connected to each other by flanges and bolts;

[0020] Remove the hoop on the first section standard pier module, lift the second section standard pier module to the specified height with the jack, install the hoop on the second section standard pier module, and support it on the upper part of the mounting bracket;

[0021] Return the jacking jack to its original position and use it to lift the third standard pier module. Repeat this process until the second-to-last standard pier module is lifted so that its bottom section reaches the designed elevation. Remove the jacking jack. Install the last standard pier module, remove the mounting bracket and hoop, and complete the overall pier installation.

[0022] Furthermore, the method further comprises:

[0023] When the integral pier undergoes local settlement, the pressure sensor detects that the bearing is empty and controls the remote-controlled self-locking jack to lift the sleeve cap until the bearing pressure at the pressure sensor returns to normal.

[0024] Further, the mounting bracket includes a bracket column, a bracket main beam and a bracket secondary beam;

[0025] The support columns are provided with four, arranged in a rectangular shape, and located outside the integral pier position. The support main beam is horizontally connected to the top of the support column, and the support secondary beam is horizontally arranged on the inner side of the support main beam.

[0026] Further, the hoop comprises two semicircular sleeves, one side of which is hinged and the other side is fixed by bolts;

[0027] The two sides of the hoop are provided with radially protruding supporting feet, and when the standard pier module is lifted to the upper part of the support column, the supporting feet are supported on the secondary beam of the support.

[0028] Furthermore, the support main beam and the support secondary beam form a horizontal support platform, and the mounting support includes two layers of the horizontal support platform.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention provides a modular self-climbing pressure-maintaining self-adjusting telescopic pier and a construction method thereof. A plurality of modular steel pier segments are designed, and modular piers of different heights can be assembled to adapt to different pier heights; the pier segments are connected by flanges, and the installation speed is fast; jacks are set on the ground to gradually lift the piers, and the pier segments are assembled and installed from the bottom, which can avoid personnel working in high places and does not require the use of large machinery; the top segment is provided with a jack and a pressure sensor, which can adapt to uneven settlement of the foundation, avoid bearing separation, and ensure the normal passage of the emergency bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0032] Figure 1 Schematic diagram of step S1 of the method of the present invention.

[0033] Figure 2 Schematic diagram of step S2 of the method of the present invention.

[0034] Figure 3 Schematic diagram of step S3 of the method of the present invention.

[0035] Figure 4 Schematic diagram of step S4 of the method of the present invention.

[0036] Figure 5 Schematic diagram of step S5 of the method of the present invention.

[0037] Figure 6 Schematic diagram of step S6 of the method of the present invention.

[0038] Figure 7 It is a structural diagram of the mounting bracket of the present invention.

[0039] Figure 8 It is a planar structural diagram of the ferrule installation of the present invention.

[0040] Fig. 9 It is a structural diagram of the hoop elevation of the present invention.

[0041] Fig.10 It is a cross-sectional schematic diagram of the telescopic pier module of the present invention.

[0042] Fig.11 It is a schematic cross-sectional view of a standard pier module of the present invention.

[0043] Fig.12 It is a schematic diagram of the overall structure of the present invention.

[0044] The symbols in the figure are:

[0045] 1-telescopic pier module, 2-standard pier module, 3-remote control self-locking jack, 4-pressure sensor, 5-hoop, 6-support column, 7-support main beam, 8-support secondary beam, 9-support pad, 10-lower structure, 11-cap, 12-mounting bracket, 13-push jack. DETAILED DESCRIPTION

[0046] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0047] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "setting" and the like should be understood in a broad sense, for example, it can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] It should also be noted that although the order of steps is mentioned in the method description, in some cases, they may be performed in an order different from that shown here, and this should not be construed as a limitation on the order of the steps.

[0050] In order to solve the problems of slow repair speed of existing bridge piers, high requirements for temporary sites, mechanical lifting, high risk of manual high-altitude operations, and inability to adapt to uneven foundation settlement, the present invention provides a modular self-climbing, pressure-maintaining, and self-adjusting telescopic pier. The structure has simple erection steps, fast construction speed, and can adapt to uneven foundation settlement to avoid secondary damage.

[0051] Specifically, Fig.12 The modular self-climbing pressure-maintaining self-adjusting telescopic pier includes a plurality of standard pier modules 2 of different heights and a telescopic pier module 1, which are connected to each other from bottom to top through flanges to form an integral pier, and the telescopic pier module 1 is located at the top. During emergency rescue, the telescopic pier of the present invention can be used to support a temporary bridge.

[0052] Modular components are divided into two categories, both of which can be prefabricated in advance and assembled on site, namely:

[0053] 1. Telescopic pier module 1:

[0054] The telescopic pier module 1 includes a bottom plate and a vertical sleeve that are fixedly connected to each other, both of which are made of steel and can be welded to each other to form a lower structure 10. The top of the telescopic pier module 1 is open and is provided with a cap 11, and the top of the cap 11 supports the upper bridge structure through a support. Stiffening ribs are provided inside the telescopic pier module 1 to increase the rigidity of the component. A remote-controlled self-locking jack 3 is provided inside the telescopic pier module 1, which is located on the bottom plate inside the vertical sleeve.

[0055] The cap 11 comprises a top plate and a vertical insert pipe which are fixedly connected to each other, and both are made of steel and can be welded to each other. The vertical insert pipe is inserted downward into the vertical sleeve pipe, and the top of the remote control self-locking jack 3 supports the top plate of the cap 11.

[0056] In addition, a pressure sensor 4 is provided on the top of the cap 11 and is located at the bottom of the support, which can detect the support pressure in real time. When local settlement occurs at the bottom of the integral pier, the integral pier moves downward, and the support pressure is instantly reduced. At this time, the remote-controlled self-locking jack 3 is controlled to lift the cap 11, which can increase the height of the telescopic pier module 1 upward, restore the support for the support, and the support pressure will be restored.

[0057] The remote control self-locking jack 3 can be a remote control jack powered by a battery such as lead acid or lithium battery (such as the remote control jack involved in publication number CN209685215U), which has the function of self-locking after lifting and unloading.

[0058] 2. Standard pier module 2:

[0059] The standard pier module 2 includes a vertical tube and a connecting plate. The two connecting plates are fixedly connected to the top and bottom sides of the vertical tube respectively. Both connecting plates are made of steel and can be welded to each other.

[0060] The standard pier module 2 can be prefabricated into various models of different heights. Different models of standard pier modules 2 can be selected and combined according to site requirements to flexibly adapt to different height requirements.

[0061] like Fig.11 , a reinforcing rib can be set in the standard pier module 2, which is located at the connection between the connecting plate and the vertical tube and is perpendicular to both, which can effectively improve the rigidity of the standard pier module 2. A reinforcing rib is also set on the top of the standard pier module 2 connected to the telescopic pier module 1, which can improve the bearing capacity of the bottom plate of the telescopic pier module 1.

[0062] Vertical holes are provided on the bottom plate of the telescopic pier module 1 and the edges of the connecting plates of the standard pier module 2. The telescopic pier module 1 and the standard pier module 2, as well as two vertically adjacent standard pier modules 2, are connected to each other through flanges and bolts.

[0063] The present invention provides a construction method for the modular self-climbing pressure-maintaining self-adjusting telescopic pier, such as Figure 1-6 , specifically including the following steps:

[0064] S1: Level the site, set up a mounting bracket 12 at the designed position of the bridge pier, and deploy a push jack 13 under the mounting bracket 12.

[0065] S2: Use flanges and bolts to connect the telescopic pier module 1 and the first section standard pier module 2.

[0066] S3: Use the jacking jack 13 to lift the first section standard pier module 2 to a specified height (the total height of the second section standard pier module 2 and the jacking jack 13), then install the hoop 5 on the first section standard pier module 2, and support the hoop 5 on the upper part of the installation bracket;

[0067] S4: The jacking jack 13 is returned to its position, and the second section standard pier module 2 is installed on the jacking jack 13. The second section standard pier module 2 is lifted by the jacking jack 13 until it contacts the first section standard pier module 2. Then, the first section standard pier module 2 and the second section standard pier module 2 are connected to each other by flanges and bolts.

[0068] S5: remove the hoop 5 on the first standard pier module 2, lift the second standard pier module 2 to a specified height (the total height of the third standard pier module 2 and the jacking jack 13), install the hoop 5 on the second standard pier module 2, and support the hoop 5 on the upper part of the mounting bracket again;

[0069] S6: Return the jacking jack 13 to its original position, and use the jacking jack 13 to lift the third standard pier module 2. Repeat this process until the second-to-last standard pier module 2 is lifted so that its bottom section reaches the design elevation (the elevation of the top surface of the last standard pier module 2). Remove the jacking jack 13; install the last standard pier module 2 at the bridge location, remove the mounting bracket 12 and the hoop 5, and complete the overall pier installation.

[0070] like Figure 1-6 In the embodiment, the integral pier includes a telescopic pier module 1 and three standard pier modules 2 from top to bottom. According to the actual design requirements, the three standard pier modules 2 adopt models of different heights, so that the flange connection operation can be carried out at a lower height as much as possible, which is convenient for construction and ensures safety. In actual construction, after selecting the standard pier module 2 of the existing height model, if the design height of the integral pier is still not met, it is necessary to fine-tune the height of the integral pier, which can be achieved by slightly lifting the sleeve cap 11 with the help of the remote control self-locking jack 3.

[0071] like Fig.10 After the bridge is erected, when the integral pier undergoes partial settlement, the pressure sensor 4 detects that the support is emptied, and controls the remote-controlled self-locking jack 3 to lift the sleeve cap 11 until the support pressure at the pressure sensor 4 returns to normal, and the remote-controlled self-locking jack 3 is set to complete self-locking.

[0072] like Figure 7The above method involves an installation bracket 12, including a bracket column 6, a bracket main beam 7 and a bracket secondary beam 8. There are four bracket columns 6, which are arranged in a rectangular shape and are located outside the integral pier position. A bracket pad 9 is provided at the bottom of the bracket column 6. The bracket main beam 7 is horizontally connected to the top of the bracket column 6, and the bracket secondary beam 8 is horizontally arranged on the inner side of the bracket main beam 7. The bracket main beam 7 and the bracket secondary beam 8 form a horizontal support platform, and the installation bracket 12 includes at least two layers of horizontal support platforms, which are the main and secondary beam grids. The overall height of the installation bracket 12 does not exceed 1.5m, which is convenient for manual operation.

[0073] like Figure 8-9 The above method also involves a hoop 5, which includes two semicircular sleeves, one side of which is hinged and the other side is fixed by bolts. The hoop 5 has radially protruding feet on both sides. When the standard pier module 2 is lifted to the upper part of the support column 6, the feet can be supported on the support secondary beam 8 of the main and secondary beam grids at different heights.

[0074] The bridge pier constructed by the present invention can be dismantled after use and can be reused.

[0075] The present invention adopts modular steel pier segments. The modular piers of different heights can be assembled to adapt to different pier heights. The pier segments are connected by flanges, which can be installed quickly. In addition, the pier segments are assembled from the bottom by gradually lifting the jacks, which can avoid high-altitude operations and do not require large machinery. In addition, the top segment is equipped with a jack and a pressure sensor, which can adapt to uneven foundation settlement, avoid bearing de-airing, and ensure the normal passage of the emergency bridge.

[0076] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. Modular self-climbing pressure-maintaining self-adjusting telescopic pier, characterized by: It comprises a plurality of standard pier modules (2) of different heights and a telescopic pier module (1), which are connected to each other from bottom to top through flanges to form an integral pier, and the telescopic pier module (1) is located at the top; The telescopic pier module (1) is open at the top and is provided with a cap (11), and the top of the cap (11) supports the upper bridge structure through a support; A remote-controlled self-locking jack (3) is arranged in the telescopic pier module (1), the top of the remote-controlled self-locking jack (3) supports the sleeve cap (11), and a pressure sensor (4) is arranged on the top of the sleeve cap (11) and is located at the bottom of the support.

2. The modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 1 is characterized in that: The telescopic pier module (1) comprises a bottom plate and a vertical sleeve which are fixedly connected to each other, and the remote-controlled self-locking jack (3) is located on the bottom plate inside the vertical sleeve; The sleeve cap (11) comprises a top plate and a vertical insert pipe which are fixedly connected to each other, the vertical insert pipe is inserted downward into the vertical sleeve, and the top of the remote-controlled self-locking jack (3) supports the top plate.

3. The modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 2 is characterized in that: The standard pier module (2) comprises a vertical tube and a connecting plate, wherein the two connecting plates are respectively fixedly connected to the top and bottom sides of the vertical tube.

4. The modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 3 is characterized in that: The bottom plate of the telescopic pier module (1) and the edge of the connecting plate of the standard pier module (2) are both provided with vertical holes, and the telescopic pier module (1) and the standard pier module (2), as well as two vertically adjacent standard pier modules (2), are connected to each other via flanges and bolts.

5. The modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 4 is characterized in that: The standard pier module (2) is provided with a reinforcing rib located at the connection between the connecting plate and the vertical pipe and perpendicular to both.

6. The construction method of the modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 5, characterized in that: The method comprises: A mounting bracket (12) is set up at the integral pier position, and a push jack (13) is deployed below the mounting bracket (12); The telescopic pier module (1) and the first section standard pier module (2) are connected to each other using flanges and bolts; Using a jacking jack (13) to lift the first section of the standard pier module (2) to a specified height, installing a sleeve (5) on the first section of the standard pier module (2), and supporting the sleeve (5) on the upper part of the installation bracket; The jacking jack (13) is returned to its original position, and the second section standard pier module (2) is lifted by the jacking jack (13) until it contacts the first section standard pier module (2), and the first section standard pier module (2) and the second section standard pier module (2) are connected to each other by flanges and bolts; The hoop (5) on the first standard pier module (2) is removed, the second standard pier module (2) is lifted to a specified height by a jacking jack (13), and the hoop (5) is installed on the second standard pier module (2) and supported on the upper part of the installation bracket; The jacking jack (13) is returned to its position, and the third standard pier module (2) is lifted by the jacking jack (13), and the process is repeated until the second to last standard pier module (2) is lifted so that its bottom section reaches the design elevation, and the jacking jack (13) is removed; the last standard pier module (2) is installed, and the installation bracket (12) and the hoop (5) are removed to complete the installation of the entire pier.

7. The construction method of the modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 6 is characterized by: The method further comprises: When the integral pier undergoes local settlement, the pressure sensor (4) detects that the support is emptied and controls the remote-controlled self-locking jack (3) to lift the sleeve cap (11) until the support pressure at the pressure sensor (4) returns to normal.

8. The construction method of the modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 7 is characterized by: The mounting bracket (12) comprises a bracket column (6), a bracket main beam (7) and a bracket secondary beam (8); The support columns (6) are provided in four numbers and arranged in a rectangular shape and are located outside the integral pier. The support main beam (7) is horizontally connected to the top of the support column (6), and the support secondary beam (8) is horizontally arranged on the inner side of the support main beam (7).

9. The construction method of the modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 8 is characterized by: The hoop (5) comprises two semicircular sleeves, one side of which is hinged and the other side is fixed by bolts; The sleeve (5) has radially protruding feet on both sides, and when the standard pier module (2) is lifted to the upper part of the support column (6), the feet are supported on the support secondary beam (8).

10. The construction method of the modular self-climbing pressure-maintaining self-adjusting telescopic pier according to claim 9 is characterized in that: The support main beam (7) and the support secondary beam (8) form a horizontal support platform, and the mounting support (12) includes two layers of the horizontal support platform.

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