Temporary pier dismantling device and dismantling method for bridge crossing existing line

Abstract

The invention relates to the technical field of bridge temporary pier dismantling, in particular to a temporary pier dismantling device and dismantling method for a bridge crossing an existing line. The device comprises two reference power units which are symmetrically installed on the two sides of a temporary pier, and each reference power unit is provided with a driving assembly; the two ends of the steel cable are connected with the power ends of the two driving assemblies, the dismantling units are fixedly installed on the steel cable at intervals, motors and lifting hooks are arranged in the dismantling units, and all parts of the temporary piers are hoisted and dismantled under cooperation of cooperative driving force of the two driving assemblies and transferred to the ground, so that dismantling operation of the temporary piers is completed one by one. According to the method, the temporary pier of the bridge crossing the existing line can be rapidly and safely dismantled, the original large temporary pier assembly can be segmented into a plurality of small sub-sections through cooperative hoisting and segmentation, coding is carried out according to a specific sequence, a specific safe operation route is generated, and then the hoisting and dismantling difficulty and risk are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temporary pier dismantling of bridge, in particular to a temporary pier dismantling device and method for bridge crossing existing line. BACKGROUND

[0002] With the long-term construction and development of China's traffic network, the situation of new line crossing existing line is more and more common. In bridge construction engineering, when the new bridge project needs to cross the existing line and the width of the existing line is large, temporary piers are usually built in the middle of the existing line, and then the temporary piers are dismantled after the new bridge is completed.

[0003] At present, the traditional methods of bridge temporary pier dismantling mainly include large hoisting machinery lifting, manual cutting and blasting demolition, but these methods have obvious limitations.

[0004] The large hoisting machinery is obviously limited by site conditions and is difficult to be applied to narrow working environment. When working on wide bridge, the station needs to be adjusted frequently to cover the full width.

[0005] Manual cutting and dismantling have high labor intensity, long dismantling period and safety hazards such as falling and object impact.

[0006] Although blasting demolition can quickly complete the work, it is easy to cause vibration influence on the surrounding structure and environment.

[0007] More importantly, the above traditional methods are only used in existing highway lines, and have great influence on the operation of existing highway lines, even need to close the existing highway lines, which is difficult to be applied to existing railway lines.

[0008] When the new bridge crosses the existing railway line and the temporary pier is located between multiple railway lines, the dismantling of the temporary pier will inevitably interfere with the normal operation of the railway line. The window time of railway line closure is short, and the scheduling work is very difficult, so the dismantling of the temporary pier is more difficult. Therefore, it is of great practical significance to develop a bridge temporary pier dismantling device with simple structure, convenient operation and high safety, which can realize the rapid dismantling of the temporary pier without affecting the operation of the existing railway line. SUMMARY

[0009] The present application aims to at least improve one of the technical problems existing in the prior art. To this end, the present application provides a temporary pier dismantling device and method for bridge crossing existing line.

[0010] The technical scheme of the present application is as follows: A temporary pier dismantling device for bridge crossing existing line, comprising: Two reference power units are symmetrically installed on both sides of the temporary pier, and a driving assembly is installed on each reference power unit; Steel cable, two ends of which are connected to power ends of two driving assemblies and located directly above the temporary pier; A plurality of demolition units are fixedly installed on the steel cable at intervals, each of the demolition units comprising: A box body having a cavity; A groove locking piece wrapping the steel cable and fixedly locked to the surface of the box body; A motor installed in the cavity of the box body, an output part of the motor being provided with a winch; A steel wire rope, one end of which is wound on the winch and the other end of which extends out of the cavity of the box body; A lifting hook connected to the steel wire rope away from the winch, which hoists and removes components of the temporary pier to the ground under the cooperative driving force of the two driving assemblies to complete the demolition of the temporary pier one by one.

[0011] In a possible technical solution, further, each of the reference power units comprises: A plurality of supports, which are L-shaped and fixedly stacked to form first and second top surfaces parallel to each other, wherein the first and second top surfaces are both provided with steel plates, the height of the first top surface is lower than that of the second top surface, and the first and second top surfaces are fixed by a long steel pull rod; A winch installed on the steel plate of the first top surface, an output end of the winch being connected to the steel cable; A plurality of guide wheels arranged in a straight line on the steel plate of the second top surface, used for assisting the steel cable to move in a direction.

[0012] In a possible technical solution, further, each of the supports comprises: A cubic steel member, each end point of which is provided with a hole to form vertical, transverse and longitudinal holes of the cubic steel member; An anchor rod passing through the vertical hole of the cubic steel member and connected to the cubic steel member, which facilitates positioning and installation and reinforces the cubic steel member to enhance its compressive strength; A tension bolt passing through the transverse and longitudinal holes of the cubic steel member and connected to the cubic steel member, which facilitates positioning and installation and reinforces the cubic steel member to enhance its compressive strength.

[0013] In a possible technical solution, further, the support further comprises: A short steel pull rod crosswise installed on a side surface of the cubic steel member, used for reinforcing the cubic steel member to prevent deformation.

[0014] A temporary pier dismantling method across an existing line bridge, wherein the dismantling device as described above is used to dismantle the temporary pier of the existing line bridge in operation, and the temporary pier comprises: A concrete pile cap, a steel column and a steel bent cap are installed in turn from the ground surface, wherein before the concrete pile cap is poured, the concrete pile cap is divided into blocks, and each concrete block is provided with PVC pipes arranged transversely to serve as rope saw cutting holes before the concrete pile cap is dismantled; A steel cross beam is installed between two steel bent caps; The method comprises: S1: installing the dismantling device to both sides of the temporary pier; S2: dividing the steel cross beam, the steel bent cap and the steel column into multiple sub-sections in turn and marking, and drilling double lifting hook holes in each sub-section to complete the section division of the steel cross beam, the steel bent cap and the steel column; S3: based on the dismantling device hooking the lifting hook holes of each sub-section, cutting and removing to complete the dismantling of the steel cross beam, the steel bent cap and the steel column in turn; S4: dividing 2n+2 sub-sections based on the number n of PVC pipes, and numbering from top to bottom and close to the support direction in turn to obtain a concrete pile cap with coding sequence, and drilling lifting holes on both sides of each sub-section to obtain a concrete block with lifting holes; S5: linear cutting the concrete pile cap according to the numbering sequence to divide a single concrete block sub-section, and installing lifting steel bars on the divided concrete sub-section to obtain a concrete block sub-section to be removed; S6: based on the dismantling device hooking the lifting steel bars for removal; S7: repeating steps S5 and S6 to complete the dismantling of the concrete pile cap.

[0015] In a possible technical solution, further, the division of the steel cross beam, the steel bent cap and the steel column into multiple sub-sections and marking in S2 specifically comprises: The steel cross beam is divided into multiple sub-sections to obtain multiple steel cross beam sub-sections to be cut with coding sequence, facilitating subsequent identification and cutting in sequence and improving safety in the removal process; The steel bent cap is divided into multiple sub-sections to be numbered in turn close to the support direction to obtain multiple steel bent cap sub-sections to be cut with coding sequence, facilitating subsequent identification and cutting in sequence and improving safety in the removal process; Each steel column is divided into multiple sub-sections to be numbered in turn from top to bottom and close to the support direction to obtain multiple steel column sub-sections to be cut with coding sequence, facilitating subsequent identification and cutting in sequence and improving safety in the removal process.

[0016] In a possible technical solution, further comprising in S4: marking each PVC pipe center as an origin point; making a cross line based on each origin point as a cutting track, and the wire saw of the wire saw cutting device cuts through the PVC pipe according to the cutting track to perform block-by-block segmentation.

[0017] A temporary pier dismantling system across an existing line bridge, wherein the above method is used to dismantle the temporary pier of the existing line bridge.

[0018] A computer device, comprising a memory and a processor, the memory stores a computer program, and the processor implements the above-mentioned temporary pier dismantling method across the existing line bridge when executing the computer program.

[0019] A computer storage medium, wherein the computer storage medium stores instructions, and the instructions make the computer execute the above-mentioned temporary pier dismantling method across the existing line bridge when executed on the computer.

[0020] The temporary pier dismantling device and method across the existing line bridge according to the present application have the following technical effects: 1. In the temporary pier dismantling operation of the bridge across the existing line, the device can realize the rapid dismantling of the temporary pier without interrupting the operation of the existing line.

[0021] 2. The device can precisely control the transverse displacement of the dismantling unit through the coordinated operation of the two winches, and can avoid the safety hazards caused by the excessive power output of the single drive device, thereby improving the safety of the dismantling.

[0022] 3. The device has simple structure, low cost, convenient field installation, high safety, and wide application prospect in the field of bridge temporary pier dismantling.

[0023] 4. Based on the dismantling method and sequence of the present application, the temporary pier of the bridge across the existing line can be rapidly and safely dismantled, the originally large temporary pier component can be cut into multiple small sub-sections through the cooperation of hoisting and segmentation, and a specific safety operation route can be generated according to a specific sequence, thereby reducing the difficulty and risk of hoisting and dismantling, so that the present application can be operated under the condition of the operation of the existing line.

[0024] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0026] Figure 1 The schematic diagram of the temporary pier dismantling device across the existing line bridge and the use of the bridge according to the embodiment of the present application; Figure 2 The structural schematic diagram of the temporary pier dismantling device across the existing line bridge according to the embodiment of the present application; Figure 3 The exploded schematic diagram of the cubic steel member and the anchor rod of the tension bolt according to the device of the present application; Figure 4 The schematic diagram of the installation of the guide wheel according to the device of the present application; Figure 5 The dismantling unit and the exploded schematic diagram thereof according to the device of the present application; Figure 6 The schematic diagram of the coding and cutting sequence of the steel cross beam sub-section according to the temporary pier dismantling method across the existing line bridge of the present application; Figure 7 The schematic diagram of the hoisting of the steel cross beam sub-section according to the temporary pier dismantling method across the existing line bridge of the present application; Figure 8 The schematic diagram of the horizontal bridge direction transportation of the steel cross beam sub-section according to the dismantling method of the device of the present application; Figure 9 The schematic diagram of the falling and placing of the steel cross beam sub-section according to the dismantling method of the device of the present application; Figure 10 The schematic diagram of the coding and cutting sequence of the steel cover beam sub-section according to the dismantling method of the device of the present application; Figure 11 The schematic diagram of the coding and cutting sequence of the steel stand column sub-section according to the dismantling method of the device of the present application; Figure 12 The schematic diagram of the coding and cutting sequence of the concrete bearing platform sub-section according to the dismantling method of the device of the present application; Figure 13 The schematic diagram of the cutting of the concrete bearing platform; Figure 14 The left view of Figure 2 The left view of

[0027] Reference signs: 1 - steel cable, 2 - steel plate, 3 - anchor rod, 4 - tie bolt, 5 - support, 6 - hoist, 7 - guide roller, 8 - demolition unit, 9 - steel cross beam, 10 - steel cap beam, 11 - steel column, 12 - concrete pile cap, 13 - short steel tie rod, 14 - long steel tie rod, 15 - cubic steel member, 801 - box, 802 - groove lock, 803 - motor, 804 - wire rope, 805 - hook, 806 - cross bar. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the embodiments described are exemplary embodiments of the application. As such, the specific embodiments described herein are not intended to be limiting, and any feature described herein can be incorporated into or used in combination with any of the described embodiments.

[0029] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety.

[0031] The terms "first", "second", "third", etc., as used in the specification and claims herein, are used to distinguish between different objects, and are not used to describe a particular sequential order. Also, the terms "comprise", "comprising", "include", "including", and the like, are used herein to indicate the presence of stated features, steps or elements, but do not preclude the presence or addition of one or more other features, steps, procedures, acts, elements, components, members or the like.

[0032] Only those parts of the apparatus(es) that are pertinent to the application are shown in the drawings, and are illustrated schematically. Before explaining the exemplary embodiments in detail, it is to be understood that the application is not limited in this regard. Some embodiments are described as processes depicted as flow diagrams. Although the operations of the processes are described in a particular sequential order, many of the operations can be performed in parallel, or concurrently, or in any order compatible with the context. The various exemplary embodiments will also be described with reference to a particular apparatus. Those skilled in the art will understand that the methods and apparatuses described herein can be implemented in software and / or hardware.

[0033] The terms "component," "module," "system," "unit," and the like are used in the present specification to represent a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a distributed among two or more computers. In addition, these units can be executed from various computer-readable media having various data structures stored thereon. The units can communicate, for example, according to signals having one or more data packets (e.g., from a second unit data from interacting with another unit of a local system, a distributed system, and / or a network. For example, the Internet interacts with other systems through signals.

[0034] Embodiment 1 As shown in Figures 1 to 5 , Figure 14 The present embodiment provides a temporary pier dismantling device across an existing line bridge, which comprises: Two reference power units are symmetrically installed on both sides of the temporary pier, and each reference power unit is provided with a driving assembly; A steel cable 1 is connected to the power ends of the two driving assemblies and located directly above the temporary pier; A plurality of dismantling units 8 are fixedly installed on the steel cable 1 at intervals, and each dismantling unit 8 comprises: A box body 801 has a cavity; A groove locking piece 802 wraps the steel cable 1 and is fixedly locked to the surface of the box body 801. It should be noted that in the present embodiment, a crossbar 806 is further arranged in the groove locking piece 802, which is installed between the steel cable 1 and the box body 801, and is used to assist in clamping the steel cable 1; It should be noted that in the present embodiment, the groove size of the groove locking piece 802 matches the diameter of the steel cable 1, and the groove locking piece 802 wraps the steel cable 1 and is fixed to the top surface of the box body 801 by bolts, so as to realize that the dismantling unit 8 hangs and fixes the steel cable 1.

[0035] A motor 803 is installed in the cavity of the box body 801, and a winding drum is installed at the output of the motor 803; A steel wire rope 804 is wound on the winding drum at one end and extends out of the cavity of the box body 801 at the other end; A lifting hook 805 is connected to the steel wire rope 804 away from the winding drum, and under the cooperative driving force of the two driving assemblies, it lifts and dismantles the components of the temporary pier and transfers to the ground, so as to complete the dismantling of the temporary pier one by one.

[0036] It should be noted that in the embodiment, each of the reference power units comprises: A plurality of supports 5 are L-shaped and are sequentially stacked and fixed to form a first top surface and a second top surface which are parallel to each other, wherein the first top surface and the second top surface are both provided with steel plates 2, the height of the first top surface is lower than the height of the second top surface, and the first top surface and the second top surface are fixed by a long steel pull rod 14; A winch 6 is installed on the steel plate 2 of the first top surface, and the output end of the winch 6 is connected with the steel cable 1. A plurality of guide wheels 7 are arranged in a linear shape on the steel plate 2 of the second top surface, and are used to assist the steel cable 1 to move in a direction.

[0037] It should be noted that in the embodiment, each of the supports 5 comprises: A cubic steel member 15, each end of which is provided with a hole to form a vertical hole, a horizontal bridge hole and a longitudinal bridge hole of the cubic steel member 15; It should be noted that in the embodiment, the support 5 further comprises: A short steel pull rod 13 which is cross-installed on the side surface of the cubic steel member 15, and is used to reinforce the cubic steel member 15 to prevent deformation.

[0038] An anchor rod 3 which passes through the vertical hole of the cubic steel member 15 and is connected with the cubic steel member 15, so as to facilitate positioning and installation and reinforce the cubic steel member 15 to enhance the compressive strength thereof, specifically, the upper end of the anchor rod 3 is fixed to the cubic steel member 15 by a nut, and the lower end of the anchor rod 3 is anchored to another cubic steel member 15 at the bottom or is anchored to the ground to enhance the installation stability of the cubic steel member 15 and prevent shaking. A tension bolt 4 which passes through the horizontal bridge hole and the longitudinal bridge hole of the cubic steel member 15 and is connected with the cubic steel member 15, so as to facilitate positioning and installation and reinforce the cubic steel member 15 to enhance the compressive strength thereof, specifically, in the embodiment, the screw rod of the tension bolt 4 passes through the horizontal bridge hole of the cubic steel member 15 and the hole of the short steel pull rod 13, and the screw rod of the tension bolt 4 is fixed at both ends by nuts; the screw rod of the tension bolt 4 passes through the longitudinal bridge hole of the cubic steel member 15 and the hole of the short steel pull rod 13, and the screw rod of the tension bolt 4 is fixed at both ends by nuts; the screw rod of the tension bolt 4 passes through the longitudinal bridge hole of the cubic steel member 15 and the hole of the long steel pull rod 14, and the screw rod of the tension bolt 4 is fixed at both ends by nuts, so as to fix the long steel pull rod 14 and the cubic steel member 15.

[0039] It should be noted that in the embodiment, the support 5 further comprises: Short steel pull rod 13, cross-mounted on the side surface of the cubic steel member 15, for reinforcing the cubic steel member 15 to prevent deformation.

[0040] Embodiment 2 The embodiment provides a temporary pier dismantling method for a bridge across an existing line, wherein a dismantling device as described above is used to dismantle the temporary pier of the bridge in operation, and the temporary pier comprises: A concrete pile cap 12, a steel column 11 and a steel bent cap 10 are sequentially mounted on the ground surface, wherein the concrete pile cap 12 is divided into blocks before being poured, and each concrete block is provided with PVC pipes arranged transversely to serve as rope saw cutting holes before the concrete pile cap 12 is dismantled; A steel cross beam 9 is mounted between two steel bent caps 10; The method comprises: S1: mounting the dismantling device to both sides of the temporary pier; S2: sequentially dividing the steel cross beam, the steel bent cap and the steel column into multiple sub-sections and marking, and drilling double lifting hook holes in each sub-section to complete the section division of the steel cross beam, the steel bent cap and the steel column; S3: based on the dismantling device hooking the lifting hook holes of each sub-section, cutting and removing to sequentially complete the dismantling of the steel cross beam, the steel bent cap and the steel column; S4: based on the number n of the PVC pipes, dividing 2n+2 sub-sections and sequentially numbering from top to bottom and from the direction close to the support to obtain a concrete pile cap with coding sequence, and drilling lifting holes on both sides of each sub-section to obtain a concrete block with lifting holes; S5: linear cutting the concrete pile cap according to the numbering sequence to divide a single concrete block sub-section, and installing lifting steel bars on the divided concrete sub-section to obtain a concrete block sub-section to be removed; S6: based on the dismantling device hooking the lifting steel bars to remove; S7: repeating steps S5 and S6 to complete the dismantling of the concrete pile cap.

[0041] In a possible technical solution, further, the step S2 of dividing the steel cross beam, the steel bent cap and the steel column into multiple sub-sections and marking specifically comprises: The steel cross beam is divided into multiple sub-sections to obtain multiple steel cross beam sub-sections to be cut with coding sequence, so that subsequent identification and cutting according to the sequence are facilitated, and the safety in the removal process is improved; The steel cover beam is divided into a plurality of sub-sections, sequentially numbered from inside to outside in the direction close to the support, a plurality of steel cover beam sub-sections to be cut containing coding sequences are obtained, subsequent identification and cutting in sequence are facilitated, and safety in the transfer process is improved. Each steel column is divided into a plurality of sub-sections, sequentially numbered from top to bottom in the direction close to the support, a plurality of steel column sub-sections to be cut containing coding sequences are obtained, subsequent identification and cutting in sequence are facilitated, and safety in the transfer process is improved.

[0042] In a possible technical solution, in S4, further comprising: Each PVC pipe center is marked as an origin; Based on each origin, a cross line is drawn as a cutting track, and a wire saw of a wire saw cutting device is used to cut the PVC pipe according to the cutting track.

[0043] The present application provides the following specific construction cases, taking a certain existing line bridge as an example, in order to not interrupt the operation of the existing line, the temporary pier is to be removed, and the following construction disassembly scheme is provided: Step one: install the removal device; Referring to Figure 1 and 2 , installation: first, use a crane to hoist and place two supports on both sides of the bridge transverse direction, and the two supports are parallel to the existing traffic line and the temporary pier, the supports are fixed by weights and anchor rods to prevent the supports from slipping; second, the guide wheel and the winch are fixed to the top surface of the support by bolts; third, the steel cable rope is connected to the winch by winding around the guide wheel; finally, the removal unit is installed on the steel cable rope and fixed by bolts to prevent the removal unit from sliding left and right on the steel cable rope.

[0044] As shown in Figure 1 and Figure 2 , the method is as follows: first, two winches cooperate with each other to move the removal unit to the hoisting position; second, when the removal unit hooks and hoists the component to be hoisted, the two winches are started synchronously, and through the coordinated operation of one loose and one tight of the two winches, the transverse displacement of the component is accurately controlled; then, after the component is hoisted from below the bridge to the outside of the bridge, the removal unit lowers the component to the ground; finally, the component is directly hoisted and transferred by the crane.

[0045] Step two: removal of the temporary pier Given the complex structure, large size, and weight of the temporary pier, it is necessary to divide the temporary pier into sections and use the aforementioned dismantling equipment to lift and transport the sections. Following a top-to-bottom and inside-to-outside sequence, the temporary pier is dismantled in sequence, consisting of four parts: the steel crossbeams, steel cap beams, steel columns, and concrete foundation. Specific dismantling details for each part are as follows.

[0046] (1) Remove the steel crossbeams of the temporary pier. (a) Divide the steel beam into segments, such as Figure 6 As shown; (b) Drill holes on both sides of the steel beam segment to be lifted using a drilling rig to form lifting holes; (c) Use the hooks of the demolition unit to hook the lifting holes on both sides of the steel beam segment; (d) The steel beam segment is cut and separated using a cutting machine. The built-in motor of the demolition unit drives the thin steel wire rope and hook to lift the steel beam segment, as shown. Figure 7 As shown; (e) The dismantling unit and the steel beam segment are transported along the transverse direction of the bridge by the coordinated operation of the winches on both sides of the supports, such as... Figure 8 As shown; (f) After the steel beam segment is hoisted from under the bridge to the outside of the bridge, the dismantling unit lowers the steel beam segment to the ground, as follows: Figure 9 As shown; (g) The steel beam segment is then lifted by a crane to the top of the bridge deck for transport and removal from the site.

[0047] (2) Remove the steel cap beam of the temporary pier. (a) Divide the steel cap beam into segments, such as Figure 10 As shown; (b) Drill holes on both sides of the steel cap beam segment to be lifted using a drilling rig to form lifting holes; (c) The hooks of the demolition unit are used to hook the lifting holes on both sides of the steel cap beam segment; (d) The steel cap beam segment is cut and separated using a cutting machine. The built-in motor of the demolition unit drives the thin steel wire rope and hook to lift the steel cap beam segment. (e) The dismantling unit and the steel cap beam segment are transported along the transverse direction of the bridge by the winches of the supports on both sides working in coordination; (f) After the steel cap beam segment is hoisted from under the bridge to the outside of the bridge, the dismantling unit lowers the steel cap beam segment to the ground; (g) The steel cap beam segment is then lifted by crane to the top of the bridge deck for transport and removal from the site. The lifting and transportation of the steel cap beam segment can be referred to... Figure 7 , 8 The process of hoisting the steel beam shown in Figure 9.

[0048] (3) Steel column of temporary pier (a) Segmenting the steel column, as shown in Figure 11 ; (b) Drilling holes on both sides of the steel column segment to be hoisted to form hoisting holes using a drilling machine; (c) Using the lifting hook of the demolition unit to hook the hoisting holes on both sides of the steel column segment; (d) Cutting and separating the steel column segment using a cutting machine, and the built-in motor of the demolition unit drives the steel wire rope and the lifting hook to lift the steel column segment; (e) Transporting the demolition unit and the steel column segment along the transverse direction of the bridge by coordinating the winches of the two side supports; (f) After the steel column segment is hoisted from below the bridge to the outside of the bridge, the demolition unit lowers the steel column segment to the ground; (g) Then use the crane to hoist the steel column segment above the bridge deck for transportation off the site. The hoisting and transportation of the steel column segment can refer to the steel beam hoisting process shown in Figure 7 , 8 , 9.

[0049] (4) Concrete pile cap of temporary pier (a) Before pouring the concrete pile cap, divide the concrete pile cap into two identical parts, as shown in Figure 12 , and each concrete block is pre-drilled with two PVC pipes, which serve as rope saw cutting holes before the concrete pile cap is removed, as shown in Figure 13 ; (b) Based on the two PVC pipes, divide each concrete block into six sub-sections and sequentially number them from top to bottom and towards the support to obtain a concrete pile cap with coding sequence, and drill hoisting holes on both sides of each sub-section to obtain a concrete block with hoisting holes; (c) Linearly cutting the concrete pile cap according to the numbering sequence to separate individual concrete block sub-sections, and installing hoisting steel bars on the separated concrete sub-sections to obtain the concrete block sub-sections to be transferred; (d) Using the lifting hook of the demolition unit to hook the hoisting steel bars on both sides of the separated concrete sub-sections; (e) The built-in motor of the demolition unit drives the steel wire rope and the lifting hook to lift the concrete block, and the demolition unit and the concrete block are transported along the transverse direction of the bridge by coordinating the winches of the two side supports; (f) After the concrete block is hoisted from below the bridge to the outside of the bridge, the demolition unit lowers the concrete block to the ground; (g) the concrete block is hoisted to the bridge deck by the crane and then transported away. The hoisting and transporting of the concrete block can refer to the steel beam hoisting process shown in Figs. Figure 7 、 8 9. The size of the steel beam, steel bent cap, steel column and concrete pile cap of the temporary pier is determined according to the hoisting capacity and operating power of the winch and the demolition unit, so as to ensure the safe hoisting of each component block.

[0050] The temporary pier demolition device and method for the bridge across the existing line according to the present application have the following technical effects:

[0051] The temporary pier demolition device and method for the bridge across the existing line according to the present application have the following technical effects: 1. In the demolition of the temporary pier of the bridge across the existing line, the device can realize the rapid demolition of the temporary pier without interrupting the operation of the existing line.

[0052] 2. The device can precisely control the transverse displacement of the demolition unit through the cooperative operation of the two winches, and can avoid the safety hazards caused by the excessive power output of the single drive device, thereby improving the safety of the demolition.

[0053] 3. The device has simple structure, low cost, convenient installation, high safety and wide application prospect in the field of demolition of temporary piers of bridges.

[0054] 4. The demolition method and sequence based on the present application can realize the rapid and safe demolition of the temporary pier of the bridge across the existing line. The large temporary pier component can be divided into multiple small sub-sections through the cooperation of hoisting and splitting, and a specific safety operation route can be generated according to a specific sequence, thereby reducing the difficulty and risk of hoisting and demolition, so that the present application can be operated under the condition of operation of the existing line.

[0055] Example 3 The present embodiment provides a temporary pier demolition system for a bridge across an existing line, wherein the above-mentioned method is used to demolish the temporary pier of the bridge across the existing line.

[0056] The temporary pier dismantling system across the existing line bridge in the embodiment of the present application can be a device, or a component in a terminal, an integrated circuit, or a chip. The device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a notebook computer, a palm computer, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and the non-mobile electronic device can be a server, a network attached storage (NAS), a personal computer (PC), and the like, which are not limited in the embodiment of the present application.

[0057] The temporary pier dismantling system across the existing line bridge in the embodiment of the present application can be a device with an operating system. The operating system can be an Android operating system, an ios operating system, or other possible operating systems, which are not limited in the embodiment of the present application.

[0058] The temporary pier dismantling system across the existing line bridge provided in the embodiment of the present application can realize the method Figure 1 The processes of the temporary pier dismantling method across the existing line bridge are not repeated here.

[0059] The temporary pier dismantling system across the existing line bridge according to the embodiment of the present application can realize rapid and safe dismantling of the temporary pier across the existing line bridge. The originally large temporary pier component can be cut into multiple small sub-segments through cooperation of hoisting and segmentation, and a specific safety operation route is generated according to a specific sequence, thereby reducing the difficulty and risk of hoisting and dismantling, so that the present application can operate under the condition of existing line operation.

[0060] Optionally, the embodiment of the present application further provides an electronic device, which includes a processor, a memory, a program or instructions stored on the memory and executable on the processor. The program or instructions are executed by the processor to realize the processes of the above-mentioned method embodiment of the temporary pier dismantling method across the existing line bridge, and achieve the same technical effects. The processes are not repeated here.

[0061] The embodiment of the present application further provides a readable storage medium, which stores a program or instructions. The program or instructions are executed by the processor to realize the processes of the above-mentioned method embodiment of the temporary pier dismantling method across the existing line bridge, and achieve the same technical effects. The processes are not repeated here.

[0062] The processor is a processor in the electronic device in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like.

[0063] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0064] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0065] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. In this paper, "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification is not necessarily the same embodiment, nor is it independent or alternative to other embodiments or embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0066] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A temporary pier removal device for bridges spanning existing railway lines, characterized in that, include: Two reference power units are symmetrically installed on both sides of the temporary pier, and each reference power unit is equipped with a drive component. The steel cable (1) is connected at both ends to the power ends of the two drive components and is located directly above the temporary pier; Multiple dismantling units (8) are fixedly installed at intervals on the steel cable (1), and each dismantling unit (8) includes: The housing (801) has a cavity; A grooved locking piece (802) wraps around the steel cable (1) and securely locks it to the surface of the box (801); The motor (803) is installed in the cavity of the housing (801), and the output part of the motor (803) is equipped with a stranded wheel; A steel wire rope (804) has one end wound around the stranded wheel and the other end extending out of the cavity of the housing (801); The hook (805) is connected to the wire rope (804) away from the sheave. Under the coordinated driving force of the two drive components, the hook lifts and dismantles each component of the temporary pier and transfers it to the ground to complete the dismantling of the temporary pier one by one.

2. The temporary pier removal device for bridges crossing existing railway lines according to claim 1, characterized in that, Each of the aforementioned reference power units includes: Multiple supports (5) are stacked and fixed in an L-shape to form a first top surface and a second top surface that are parallel to each other, wherein steel plates (2) are installed on both the first top surface and the second top surface, and the height of the first top surface is lower than the height of the second top surface; A winch (6) is installed on a steel plate (2) on the first top surface, and its output end is connected to the steel cable (1). Multiple guide wheels (7) are arranged in a straight line on the steel plate (2) on the second top surface.

3. The temporary pier removal device for bridges crossing existing railway lines according to claim 2, characterized in that, Each of the aforementioned supports (5) includes: A cubic steel member (15) has holes reserved at each end to form vertical holes, transverse holes and longitudinal holes in the cubic steel member (15). Anchor bolt (3) passes through the vertical hole of the cubic steel member (15) and is connected to the cubic steel member (15); Tie bolts (4) are connected to the cube steel member (15) through the transverse and longitudinal holes.

4. The temporary pier removal device for bridges crossing existing railway lines according to claim 3, characterized in that, The support (5) also includes: Short steel tie rods (13) are installed crosswise on the side surface of the cubic steel member (15) to reinforce the cubic steel member (15) and prevent deformation.

5. A method for removing temporary piers of a bridge spanning an existing railway line, characterized in that, The temporary piers of an existing railway bridge in operation are removed using the dismantling device described in any one of claims 1 to 4, the temporary piers comprising: A concrete foundation (12), a steel column (11) and a steel cap beam (10) are installed sequentially upwards on the ground base. Before the concrete foundation (12) is poured, the concrete foundation (12) is divided into blocks, and each concrete block is reserved with horizontally arranged PVC pipes as wire saw cutting holes before the concrete foundation (12) is dismantled in blocks. A steel crossbeam (9) is installed between two steel cap beams (10); The method includes: S1: Install the dismantling device to both sides of the temporary pier; S2: The steel crossbeam, the steel cap beam, and the steel column are divided into multiple sub-sections in sequence and marked. Double hook holes are drilled in each sub-section to complete the segment division of the steel crossbeam, the steel cap beam, and the steel column. S3: Based on the hook hole of each sub-section of the dismantling device, cut and dismantle and transfer it in sequence to complete the dismantling of the steel beam, the steel cap beam and the steel column; S4: Divide the PVC pipe into 2n+2 sub-sections based on the number n, and number them sequentially from top to bottom, close to the support, to obtain a concrete foundation with a coding sequence. Drill lifting holes on both sides of each sub-section to obtain a concrete block with lifting holes. S5: The concrete foundation is cut in order of number to divide it into individual concrete blocks, and hoisting steel bars are installed on the divided concrete blocks to obtain the concrete blocks to be transferred. S6: The dismantling device hooks onto the hoisting steel bars for dismantling and transfer; S7: Repeat steps S5 and S6 to complete the removal of the concrete foundation.

6. The method for removing temporary piers of bridges crossing existing railway lines according to claim 5, characterized in that, In S2, the steel crossbeam, the steel cap beam, and the steel column are divided into multiple sub-sections and marked accordingly. Specifically, this includes: The steel beam is divided into multiple sub-sections to obtain multiple steel beam sub-sections to be cut, each containing a coded sequence. The steel cap beam is divided into multiple sub-sections, which are numbered sequentially in the direction close to the support to obtain multiple steel cap beam sub-sections to be cut with a coding sequence. Each steel column is divided into multiple sub-sections, which are numbered sequentially from top to bottom, close to the support, to obtain multiple steel column sub-sections to be cut with a coding sequence.

7. The method for removing temporary piers of bridges crossing existing railway lines according to claim 5, characterized in that, S4 also includes: Mark the center of each PVC pipe as the origin; Draw a cross line based on each origin to serve as the trajectory to be cut.

8. A temporary pier removal system for bridges spanning existing railway lines, characterized in that, The temporary piers of existing railway bridges are removed using the method described in claim 5.

9. A computer device, characterized in that, It includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the temporary pier removal method for bridges crossing existing lines as described in claim 5.

10. A computer storage medium, characterized in that, The computer storage medium stores instructions that, when executed on the computer, cause the computer to perform the method for removing temporary piers across an existing railway line as described in claim 5.

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