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CN-121992723-A - Device for installing bridge plate girder under limited operation condition and using method

CN121992723ACN 121992723 ACN121992723 ACN 121992723ACN-121992723-A

Abstract

The invention relates to a device and a using method for bridge plate girder installation under limited operation conditions, wherein the device comprises a guide rail device, a fixing device, at least two pulleys, a traction device, at least two jacks and an adjusting cushion block, wherein the guide rail device is paved on a concrete cover girder of a bridge, the fixing device is used for detachably fixing the guide rail device on the concrete cover girder, the at least two pulleys are movably arranged on the guide rail device and used for bearing a prefabricated plate girder, the traction device is arranged on one side of the concrete cover girder, the at least two jacks are used for lifting the prefabricated plate girder to withdraw the pulley after the prefabricated plate girder is pulled to a target position, and the adjusting cushion block is arranged between the pulley and the prefabricated plate girder. The invention replaces vertical hoisting by horizontal traction of the guide rail, effectively solves the problem of plate girder installation under the limited conditions of space height and width of a high-voltage power grid, an existing overhead bridge and the like, and has the advantages of safety, reliability, high efficiency and strong applicability.

Inventors

  • XIA LING
  • WANG WENXING
  • XU HAIXIA
  • ZHANG TONG
  • SUN YING

Assignees

  • 上海二十冶建设有限公司
  • 中国二十冶集团有限公司

Dates

Publication Date
20260508
Application Date
20260212

Claims (9)

  1. 1. An apparatus for bridge girder installation under limited operating conditions, comprising: The guide rail device (1) is paved on a concrete bent cap (7) of the bridge and is used for providing a horizontal moving track; a fixing device (2) for detachably fixing the guide rail device (1) to the concrete cap beam (7); At least two pulleys (3) movably arranged on the guide rail device (1) and used for bearing the prefabricated plate beams (8); The traction device (4) is arranged at one side of the concrete cover beam (7) and is used for traction of the pulley (3) and the prefabricated plate beam (8) borne by the pulley along the longitudinal movement of the guide rail device (1); at least two jacks (5) for lifting the prefabricated plate beams (8) after they are pulled to a target position so as to withdraw the trolley (3); and an adjusting cushion block (6) arranged between the pulley (3) and the prefabricated plate girder (8).
  2. 2. The device according to claim 1, characterized in that the rail device (1) is formed by splicing several segments, adjacent segments being mutually plugged with the socket (121) by means of wedges (111).
  3. 3. The device according to claim 1, wherein the fixing device (2) comprises at least two groups of clamping fixing pieces, one group of clamping fixing pieces comprises two 'C' -shaped clamps (21), the two 'C' -shaped clamps (21) are symmetrically clamped on two sides of the concrete capping beam (7), the upper end and the lower end of the 'C' -shaped clamps (21) are respectively in threaded connection with a vertical fixing bolt (22) for fixing the 'C' -shaped clamps (21) and the concrete capping beam (7) in a top fastening manner, and the upper end of the 'C' -shaped clamps (21) are in threaded connection with horizontal jacking bolts (24) for fixing the clamping top of the guide rail device (1) on the concrete capping beam (7).
  4. 4. The device according to claim 1, characterized in that the trolley (3) comprises a support (34), a universal roller (31) arranged at the bottom of the support (34), and a guide roller (32) arranged circumferentially along the side of the support (34), the guide roller (32) being in rolling engagement with the inner side wall of the guide rail device (1).
  5. 5. The device according to claim 4, characterized in that the trolley (3) is further provided with brake pads (33) for limiting the rotation of the universal wheel (31) to bring the trolley (3) into a braked condition.
  6. 6. The device according to claim 1, wherein the traction device (4) comprises an anchoring end (41) arranged on one side of the concrete cover beam (7), a traction rope (42) and a chain block (43), wherein the traction rope 42 is bound on the prefabricated plate beam 8 and is connected with the anchoring end 41 through the chain block 43.
  7. 7. Device according to claim 1, characterized in that the jack (5) is a slim jack.
  8. 8. The device according to claim 1, characterized in that the adjusting pad (6) is a rubber pad.
  9. 9. A method of installing a bridge girder using the apparatus of any one of claims 1 to 8, comprising the steps of: S1, setting out a mounting and positioning control line of a precast slab beam (8) on the surface of a concrete cover beam (7); s2, longitudinally installing and fixing the guide rail device (1) along the concrete cover beam (7); s3, respectively placing at least two pulleys (3) in the guide rail devices (1) of the cover beams at the two ends, and placing an adjusting cushion block (6) on the pulleys (3); S4, repeating the steps S1-S3 on a concrete cover beam (7) for supporting the other end of the precast slab beam (8), and installing a guide rail device (1), a fixing device (2), a pulley (3) and a traction device (4); s5, hanging two ends of the precast slab beam (8) on buffer cushion blocks (6) of the upper pulley (3) of the concrete cover beam (7) at the two ends; s6, synchronously dragging the pulleys (3) at two ends by using the traction device (4), driving the prefabricated plate beams (8) to longitudinally drag and slide to the installation position along the guide rail device (1), and enabling the pulleys (3) to be in a braking state after alignment adjustment according to the installation positioning control line; S7, placing a jack (5) at the lower part of the prefabricated plate beam (8), starting the jack (5) to jack up the prefabricated plate beam (8), and moving away the pulley (3) and the buffer pad block (6) below; s8, installing a support on the filler stone (71), and then descending the jack (5) to enable the prefabricated plate beam (8) to be installed in place on the support; and S9, repeating the steps S5-S8 until the prefabricated plate beams (8) under all limited operation conditions are installed.

Description

Device for installing bridge plate girder under limited operation condition and using method Technical Field The invention belongs to the technical field of bridge construction, and particularly relates to a device for installing a bridge plate girder under limited operation conditions and a using method thereof. Background In bridge engineering construction, the prefabricated plate girder is widely applied due to the advantages of stable quality, high construction speed and the like. Currently, conventional precast slab beam installation is primarily dependent on large dedicated equipment such as truck cranes and bridge erection machines. These devices typically require an open working space and sufficient lifting height to complete the lifting and positioning of the plate girder. However, in a particularly limited working environment such as under a high-voltage transmission line, under an existing elevated road or an elevated bridge of a subway, a construction working space is often extremely narrow, and a clear overhead height is severely limited. Under such conditions, the boom extension height of conventional hoisting equipment or the installation space of the equipment itself cannot meet the safety operation requirements or is prohibited from being directly used due to the safety management regulations of the adjacent operation lines. If the conventional method is forcibly adopted, the construction efficiency is low, and a great safety risk exists, so that equipment collision, plate girder damage and even personal safety accidents can be caused. Therefore, the prior art lacks a special device and a matched construction method capable of safely and efficiently completing the installation of the bridge precast slab beam under the condition of limited space, so as to overcome the defects of the prior art and ensure the construction safety and progress. Disclosure of Invention The invention aims to provide a device for installing a bridge plate girder under a limited operation condition and a using method thereof, so as to solve the technical problem that a large hoisting device cannot be used for directly installing a prefabricated plate girder under a space limited condition, and realize safe and efficient construction. In order to achieve the above purpose, the invention adopts the following technical scheme: an apparatus for bridge girder installation under limited operating conditions, comprising: the guide rail device is paved on a concrete bent cap of the bridge and is used for providing a horizontal moving track; The fixing device is used for detachably fixing the guide rail device on the concrete cover beam; at least two pulleys movably arranged on the guide rail device and used for bearing the prefabricated plate girder; the traction device is arranged at one side of the concrete cover beam and is used for traction of the pulley and the precast slab beam borne by the pulley to move longitudinally along the guide rail device; At least two jacks for jacking the prefabricated plate girder after it is pulled to a target position so as to withdraw the trolley; and the adjusting cushion block is arranged between the pulley and the prefabricated plate girder. Further, the guide rail device is formed by splicing multiple sections, and adjacent sections are mutually spliced with the socket through wedge openings. Further, fixing device includes two at least groups of joint mounting, and a set of joint mounting includes two "C" type clamps, and two "C" type clamps symmetry card is established concrete bent cap both sides, each threaded connection of upper end and lower extreme of "C" type clamp has a vertical fixing bolt for it is fixed with the top of concrete bent cap top tightly to be used for "C" type clamp, just the upper end threaded connection of "C" type clamp has horizontal jack bolt for with guide rail device centre gripping top fastening on the concrete bent cap. Further, the pulley comprises a support, universal rollers arranged at the bottom of the support and guide rollers circumferentially arranged along the side surfaces of the support, and the guide rollers are in rolling fit with the inner side walls of the guide rail device. Further, the pulley is further provided with a brake pad for limiting the universal roller to rotate, so that the pulley is in a braking state. Further, the traction device comprises an anchoring end arranged on one side of the concrete cover beam, a traction rope and a chain block, wherein the traction rope is bound on the prefabricated plate beam and connected with the anchoring end through the chain block. Further, the jack is a thin jack. Further, the adjusting cushion block is a rubber cushion block. The invention also provides a bridge plate girder installation method using the device, which is characterized by comprising the following steps: s1, setting out a mounting and positioning control line of a precast slab beam on the surface of a concrete cover beam