Cable-stayed bridge cable tower main reinforcement section overall hoisting device and method

Abstract

The application discloses a kind of cable-stayed bridge cable tower main reinforcement section whole hoisting device and method, wherein device includes two-way threaded steel, perforated I-beam and shear jack;Every four perforated I-beam end is connected to form frame shape, and is assembled to constitute square frame, and square frame has multiple, multiple square frames are vertically spaced distribution, and it is parallelly arranged mutually;Two-way threaded steel has multiple, and sequentially spaced distribution along the length direction of perforated I-beam, and vertically connects two square frames;Shear jack has multiple, and is respectively connected in the middle on each side of two square frames adjacent to each other above and below.This whole hoisting device and method simple structure, cost is lower, it is convenient to operate, and it is strong in safety, and it has broad application prospect in practical engineering.

Description

Technical Field

[0001] This invention relates to the field of cable-stayed bridge tower construction technology, and more specifically to an integral hoisting device and method for the main reinforcement section of a cable-stayed bridge tower. Background Technology

[0002] The pylon is one of the key load-bearing structures of a cable-stayed bridge. Currently, the construction method for existing cable-stayed bridge pylons is mostly climbing formwork construction. The process mainly involves tying reinforcing bars, erecting formwork, and pouring concrete on the ground to complete the first pylon segment. Then, based on the first pylon segment, the process continues with tying reinforcing bars, moving the formwork upwards, and pouring concrete, repeating this cycle segment by segment. However, in this construction process, the connection of reinforcing bars between upper and lower pylon segments first requires the use of a tower crane to hoist bundles of reinforcing bars, and then manual labor to tie each bar individually. This is not only time-consuming and labor-intensive, but also inefficient, hindering construction progress. Summary of the Invention

[0003] The present invention provides an integral hoisting device and method for the main reinforcement section of a cable-stayed bridge tower that is easy to operate, highly modular, and promotes construction efficiency, which can at least solve one of the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An integral hoisting device for the main reinforcement section of a cable-stayed bridge tower includes bidirectional threaded steel bars, perforated I-beams, and scissor jacks;

[0006] Every four perforated I-beams are connected at their ends to form a frame, which is then assembled to form a square frame. There are multiple square frames, which are distributed vertically at intervals and are arranged parallel to each other.

[0007] The bidirectional threaded steel bars are multiple, distributed sequentially at intervals along the length of the perforated I-beam, and vertically connected to the upper and lower square frames;

[0008] The scissor jacks are multiple in number and are centrally connected to each side of the two adjacent square frames.

[0009] Furthermore, it also includes an I-beam connecting piece, which connects two adjacent perforated I-beams. Both ends of the perforated I-beams are provided with I-beam connecting holes, and the I-beam connecting piece is assembled and fixed with the I-beam connecting holes.

[0010] Furthermore, the perforated I-beam has steel bar fixing holes spaced evenly along its length, and the bidirectional threaded steel bars are inserted into the steel bar fixing holes.

[0011] Furthermore, it also includes a rebar fixing assembly, which has multiple rebar fixing assemblies and is respectively installed in the rebar fixing holes. The bidirectional threaded rebar passes through the rebar fixing assembly and is assembled and fixed with the rebar fixing hole.

[0012] Furthermore, the rebar fixing assembly includes a rebar anchor and a rebar fixing ring. There are two rebar fixing rings, stacked one on top of the other. The rebar anchor passes through the interior of the two rebar fixing rings. The rebar anchor is composed of two identical wedges. The inner wall of the wedge has a concave threaded groove along its length. The two concave threaded grooves can be assembled to form a threaded through hole. The assembled rebar anchor has a frustum-shaped structure with one end larger than the other. Both ends of the bidirectional threaded rebar are provided with threaded heads. The threaded heads pass through the rebar anchor from the larger end and are threaded to the threaded through hole. The threaded heads have a movement stroke that pushes the two wedges outward and passes through the rebar anchor and the two rebar fixing rings in sequence.

[0013] Furthermore, the scissor jack includes jack side supports, perforated steel connecting blocks, and connecting bolts. The jack side supports are four in number and are assembled into a rhombus structure. Each jack side support has bolts installed at both ends. The left and right ends of the rhombus structure are respectively hinged to the perforated steel connecting blocks via the bolts. The perforated steel connecting blocks have threaded holes. The connecting bolts pass through two of the threaded holes in sequence and connect two of the perforated steel connecting blocks. The perforated I-beam has a strip-shaped jack fixing groove in the middle of its outer side. The upper and lower ends of the rhombus structure are respectively slidably matched with the two adjacent jack fixing grooves via the bolts.

[0014] Furthermore, the perforated I-beam has a strip-shaped lifting groove in the middle of its inner side for hoisting the pre-assembled square frame as a whole.

[0015] Furthermore, it also includes a quadruped support, which has multiple quadruped supports and is respectively vertically installed at the four corners of the square frame located at the bottom layer.

[0016] A method for hoisting the main reinforcement section of a cable-stayed bridge tower as a whole, using the aforementioned hoisting device for the main reinforcement section of the cable-stayed bridge tower, includes the following steps:

[0017] S1. Pre-assemble four perforated I-beams into a square frame on the ground;

[0018] S2. Install scissor jacks between each side of two adjacent square frames for adjusting the spacing.

[0019] S3. Manually tie and connect the bi-directional threaded steel bars between two adjacent square frames using steel bar fixing components;

[0020] S4. The resulting multiple square frame structures distributed vertically are the main reinforcement frame as a whole. Four-legged supports are installed at the four corners of the bottom of the main reinforcement frame as a whole. The frame is then lifted by binding the hoisting slot and hoisted with the help of a tower crane and aligned onto the working support plane of the tower segment.

[0021] S5. Remove the tower crane, tie and connect the bidirectional threaded steel bars between two adjacent tower segments, and remove the steel bar fixing components after tying is completed.

[0022] S6. Repeat the above steps to hoist and splice the main reinforcement of the next cable-stayed bridge tower segment as a whole.

[0023] The beneficial effects of this invention are reflected in:

[0024] In this invention, pre-assembled perforated I-beams form a square frame. Multiple square frames are then stacked vertically and fixed together under the support of scissor jacks to form the main reinforcement section. Simultaneously, double-ended threaded steel bars are tied between adjacent square frames and tower segments using steel bar fixing components to strengthen the fixation. This significantly reduces the complexity of main reinforcement connection operations during cable-stayed bridge tower construction and greatly improves the efficiency of workers tying and welding individual steel bars, thereby ensuring the accuracy of the construction results and the convenience of the operation. This integrated hoisting device and method has a simple structure, low cost, convenient operation, and strong safety, and has broad application prospects in practical engineering. Attached Figure Description

[0025] The accompanying drawings, which are provided to further understand this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0027] Figure 2 This is an isometric view of a perforated I-beam according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the assembly of the steel bar fixing component and the bidirectional threaded steel bar according to an embodiment of the present invention.

[0029] Figure 4 This is an isometric view of a scissor jack according to an embodiment of the present invention.

[0030] The components in the attached diagram are labeled as follows: 1. I-beam connecting piece; 2. Two-way threaded steel bar; 3. Perforated I-beam; 301. I-beam connecting hole; 302. Steel bar fixing hole; 303. Lifting slot; 304. Jack fixing slot; 4. Steel bar fixing assembly; 401. Steel bar anchor; 402. Steel bar fixing ring; 5. Scissor jack; 501. Jack side support; 502. Bolt; 503. Perforated steel connecting block; 504. Connecting long bolt; 6. Four-legged support. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that if directional indicators (such as up, down, left, right, front, back, etc.) are involved in the embodiments of the present invention, these directional indicators are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures). If the specific posture changes, the directional indicators will also change accordingly. Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0033] See Figure 1 This invention provides an integral hoisting device for the main reinforcement section of a cable-stayed bridge tower, comprising a bidirectional threaded steel bar 2, a perforated I-beam 3, and a scissor jack 5;

[0034] Four of the perforated I-beams are connected at their ends to form a frame, which is then assembled to form a square frame. There are multiple square frames, which are distributed vertically at intervals and are arranged parallel to each other.

[0035] The bidirectional threaded steel bars 2 are multiple, distributed sequentially at intervals along the length direction of the perforated I-beam 3, and vertically connected to the upper and lower square frames;

[0036] The scissor jacks 5 are multiple in number and are centrally connected to each side of the two adjacent square frames.

[0037] See Figures 1-2In this embodiment, an I-beam connecting piece 1 is also included. Adjacent perforated I-beams 3 are connected via the I-beam connecting piece 1. Each end of the perforated I-beam 3 has an I-beam connecting hole 301, and the I-beam connecting piece 1 is assembled and fixed to the I-beam connecting hole 301. Every four perforated I-beams 3 are connected end-to-end at a 90° angle to each other, and the joints are fixed by the I-beam connecting piece 1, assembling to form the square frame.

[0038] See Figures 1-2 In this embodiment, the perforated I-beam 3 has steel bar fixing holes 302 evenly spaced along its length, and the bidirectional threaded steel bars 2 are inserted into the steel bar fixing holes 302. The bidirectional threaded steel bars 2 serve to connect and reinforce the upper and lower square frame and tower segments.

[0039] See Figures 1-3 In this embodiment, a rebar fixing component 4 is also included. The rebar fixing component 4 has multiple components, which are respectively installed in the rebar fixing holes 302. The bidirectional threaded rebar 2 passes through the rebar fixing component 4 and is assembled and fixed with the rebar fixing holes 302.

[0040] The rebar fixing assembly 4 includes a rebar anchor 401 and a rebar fixing ring 402. There are two rebar fixing rings 402, stacked one on top of the other. The rebar anchor 401 passes through the interior of the two rebar fixing rings 402. The rebar anchor 401 is composed of two identical wedges. The inner wall of the wedge has a concave threaded groove along its length. The two concave threaded grooves can be assembled to form a threaded through hole. The assembled rebar anchor 401 has a frustum-shaped structure with one end larger than the other. Both ends of the bidirectional threaded rebar 2 are provided with threaded heads. The threaded head passes through the rebar anchor 401 from the larger end and is threaded to the threaded through hole. It has a movement stroke that pushes the two wedges outward and passes through the rebar anchor 401 and the two rebar fixing rings 402 in sequence.

[0041] Two rebar fixing rings 402 are spliced ​​together and fixed in the rebar fixing hole 302. Then, the rebar anchor 401 is inserted to fix the bidirectional threaded rebar 2. Since the rebar fixing hole 302 has a certain width, the rebar fixing rings 402 can move left and right in the hole. This can not only stabilize the bidirectional threaded rebar 2, but also flexibly adjust the position of the rebar during the binding process, making the operation more convenient.

[0042] See Figure 1 and Figure 4In this embodiment, the scissor jack 5 includes a jack side support 501, a perforated steel connecting block 503, and a connecting bolt 504. The jack side support 501 has four sections, which are assembled to form a rhombus structure. Each jack side support 501 has a bolt 502 installed at both ends. The left and right ends of the rhombus structure are respectively hinged to the perforated steel connecting block 503 via the bolts. The perforated steel connecting block 503 has a threaded hole. The connecting bolt 504 passes through two of the threaded holes in sequence and connects two perforated steel connecting blocks 503. The perforated I-beam 3 has a strip-shaped jack fixing groove 304 in the middle of its outer side. The upper and lower ends of the rhombus structure are respectively slidably matched with the two adjacent jack fixing grooves 304 via the bolts 502.

[0043] The connecting bolt 504 is inserted into the perforated steel connecting block 503, and the scissor jack 5 is installed in the scissor jack fixing groove 304 to connect the upper and lower square frames. The jack side support 501 is slidably adjusted in the jack fixing groove 304 to adjust the distance between the upper and lower square frames.

[0044] See Figure 2 In this embodiment, the perforated I-beam 3 has a strip-shaped lifting slot 303 in the middle of its inner side for hoisting the pre-assembled square frame as a whole. By binding the lifting slot 303 and then using a tower crane to hoist the square frame as a whole, the construction progress is accelerated.

[0045] See Figure 1 In this embodiment, a quadruped support 6 is also included. Multiple quadruped supports 6 are vertically installed at the four corners of the bottom square frame. The multiple square frames are stacked and fixed in sequence to form the main reinforcement section. The quadruped supports 6 are installed at the bottom four corners of the main reinforcement section, ensuring that the tower crane can lift the main reinforcement section onto the working support plane of the tower stage. This allows for manual binding of the bidirectional threaded steel bars 2, after which the tower crane can be removed, improving the tower crane's turnover efficiency.

[0046] See Figures 1-4 This invention also provides a method for the overall hoisting of the main reinforcement section of a cable-stayed bridge tower, which is achieved using the aforementioned overall hoisting device for the main reinforcement section of the cable-stayed bridge tower, and includes the following steps:

[0047] S1. Pre-assemble four perforated I-beams 3 into a square frame on the ground;

[0048] The four prefabricated perforated I-beams 3 are connected end to end at a 90° angle to each other. The I-beam connecting holes 301 at both ends are fixed between adjacent perforated I-beams 3 by means of I-beam connecting pieces 1, thereby obtaining the square frame.

[0049] S2. Install scissor jacks 5 between the sides of two adjacent square frames for adjusting the spacing;

[0050] The connecting bolt 504 is inserted into the perforated steel connecting block 503, and the scissor jack 5 is installed in the scissor jack fixing groove 304 to connect the upper and lower square frames. The jack side support 501 is slidably adjusted in the jack fixing groove 304 to adjust the spacing between the upper and lower square frames, and has the flexibility to move up and down when binding the bidirectional threaded steel bar 2.

[0051] S3. Using the steel reinforcement fixing component 4, manually tie and connect the bidirectional threaded steel bars 2 between two adjacent square frames;

[0052] Two steel bar fixing rings 402 are spliced ​​and fixed in the steel bar fixing hole 302, and then the steel bar anchor 401 is inserted to fix the bidirectional threaded steel bar 2. Since the steel bar fixing hole 302 has a certain width, the steel bar fixing rings 402 can move left and right in the hole, which can not only stabilize the bidirectional threaded steel bar 2, but also flexibly adjust the position of the steel bar during the binding of the bidirectional threaded steel bar 2.

[0053] S4. The resulting multiple square frame structures distributed along the vertical direction are the main reinforcement frame as a whole. Four-legged supports 6 are installed at the four corners of the bottom of the main reinforcement frame as a whole. The frame is then lifted and aligned onto the working support plane of the tower segment by binding the lifting slot 303 and with the help of a tower crane.

[0054] Multiple square frames are stacked and fixed one on top of the other to form the main reinforcement frame as a whole. The four-legged support 6 is installed at the four bottom corners of the main reinforcement frame as a whole, ensuring that the tower crane can lift the main reinforcement frame as a whole onto the working support plane of the cable tower stage, so that the bidirectional threaded steel bars 2 can be manually tied, and then the tower crane can be removed, thereby improving the turnover efficiency of the tower crane.

[0055] S5. Remove the tower crane, tie and connect the bidirectional threaded steel bars 2 between two adjacent tower segments, and remove the steel bar fixing components 4 after tying, so as to easily realize the assembly and fixing between the two tower segments.

[0056] S6. Repeat the above steps to hoist and splice the main reinforcement of the next cable-stayed bridge tower segment as a whole.

[0057] In summary, this invention significantly reduces the complexity of main reinforcement connection operations during the construction of cable-stayed bridge towers, while greatly improving the efficiency of workers in binding and welding individual reinforcement bars, thereby ensuring the accuracy of construction results and the convenience of the operation process. This integrated hoisting device and method has a simple structure, low cost, convenient operation, and strong safety, and has broad application prospects in practical engineering.

[0058] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A device for hoisting a whole of a main reinforcement part of a cable tower of a cable-stayed bridge, characterized in that, It comprises bidirectional threaded steel bars (2), perforated I-beams (3) and shearing jacks (5); Every four end portions of the perforated I-beams (3) are connected to form a frame, and a plurality of square frames are assembled to form a square frame, which are vertically spaced and arranged in parallel. The bidirectional threaded steel bars (2) are arranged in sequence along the length direction of the perforated I-beams (3) and vertically pass through the upper and lower square frames. The shearing jacks (5) are arranged in sequence and connected to the edges of the upper and lower square frames.

2. The device according to claim 1, wherein the device is characterized by: It further comprises I-beam connecting plates (1) for connecting the adjacent two perforated I-beams (3), and I-beam connecting holes (301) are arranged at both ends of the perforated I-beams (3), and the I-beam connecting plates (1) are assembled and fixed with the I-beam connecting holes (301).

3. The device according to claim 1, wherein the device is characterized by: Steel bar fixing holes (302) are arranged in sequence along the length direction of the perforated I-beams (3), and the bidirectional threaded steel bars (2) are arranged in the steel bar fixing holes (302).

4. The device according to claim 3, wherein the device is characterized by: It further comprises steel bar fixing assemblies (4) arranged in the steel bar fixing holes (302), and the bidirectional threaded steel bars (2) pass through the steel bar fixing assemblies (4) and are assembled and fixed with the steel bar fixing holes (302).

5. The device according to claim 4, wherein the device is characterized by: The steel bar fixing assembly (4) comprises steel bar anchors (401) and steel bar fixing rings (402), the steel bar fixing rings (402) are arranged in two layers, the steel bar anchors (401) pass through the inside of the two steel bar fixing rings (402), the steel bar anchors (401) are composed of two identical wedge-shaped bodies, the inner wall of the wedge-shaped body is provided with an inner recessed thread groove along the length direction, the two inner recessed thread grooves are assembled to form a threaded through hole, the steel bar anchor (401) is in the shape of a circular truncated cone with one end large and the other end small, the bidirectional threaded steel bars (2) are provided with threaded heads at both ends, the threaded heads pass through the steel bar anchors (401) and the threaded through holes in a threaded matching manner, and have a movement stroke of extruding the two wedge-shaped bodies outward and sequentially passing through the steel bar anchors (401) and the two steel bar fixing rings (402).

6. The device according to claim 1, wherein the device is characterized by: The scissors jack (5) comprises four jack side supports (501), a perforated steel connecting block (503) and a connecting long bolt (504), the jack side supports (501) are assembled into a diamond structure, both ends of each jack side support (501) is provided with a bolt (502), the left and right ends of the diamond structure are hinged to the perforated steel connecting block (503) via the bolts, the perforated steel connecting block (503) is provided with threaded holes, the connecting long bolt (504) passes through the two threaded holes in sequence to connect the two perforated steel connecting blocks (503), the perforated I-beam (3) is provided with a strip-shaped jack fixing groove (304) in the middle of the outer side edge, and the upper and lower ends of the diamond structure are respectively matched with the two jack fixing grooves (304) adjacent in the upper and lower sides via the bolts (502).

7. The device according to claim 1, wherein the device is characterized by: The perforated I-beam (3) is provided with a strip-shaped hoisting groove (303) in the middle of the inner side edge, which is used for hoisting the square frame assembled in advance as a whole.

8. The device according to claim 1, wherein the device is characterized by: Further comprising four-foot supports (6), the four-foot supports (6) are vertically installed at the four corners of the square frame on the bottom layer.

9. A method for hoisting a main reinforcement section of a cable tower of a cable-stayed bridge as a whole, which is implemented by using the device for hoisting a main reinforcement section of a cable tower of a cable-stayed bridge as a whole according to any one of claims 1-8, characterized in that, The method comprises the following steps: S1, four perforated I-beams (3) are assembled into a square frame on the ground in advance; S2, the scissors jack (5) for adjusting the spacing is installed between the edges of the two square frames adjacent in the upper and lower sides; S3, the two-way threaded steel bars (2) between the two square frames adjacent in the upper and lower sides are manually bound and connected by means of the steel bar fixing assembly (4); S4, the plurality of square frame structures distributed in the vertical direction are obtained as a main reinforcement section, the four-foot supports (6) are installed at the four corners of the bottom of the main reinforcement section, the hoisting grooves (303) are bound and hoisted by means of the tower crane and aligned to the working support plane of the cable tower segment; S5, the tower crane is removed, the two-way threaded steel bars (2) between the two cable tower segments adjacent in the upper and lower sides are bound and connected, and the steel bar fixing assembly (4) is removed after the binding is completed; S6, the above steps are repeated to hoist and splice the main reinforcement section of the next cable tower segment of the cable-stayed bridge.

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