Integral hoisting device and method for main reinforcement part truss of cable-stayed bridge tower

Abstract

The invention discloses an integral hoisting device and method for a main reinforcement part truss of a cable-stayed bridge tower. The device comprises two-way twisted steel, perforated I-shaped steel and a scissor jack, the end parts of every four pieces of perforated I-shaped steel are connected to form a frame shape, a plurality of square frames are assembled, and the plurality of square frames are distributed up and down at intervals in the vertical direction and are arranged in parallel; the two-way twisted steel bars are sequentially distributed at intervals in the length direction of the perforated I-shaped steel and are vertically connected with the upper square frame and the lower square frame in a penetrating manner; the scissor jacks are centrally connected to the edges of the two square frames which are adjacent to each other up and down respectively. The integral hoisting device and method are simple in structure, low in manufacturing cost, convenient to operate and high in safety, and have wide application prospects in actual engineering.

Description

Technical Field

[0001] The present invention relates to the technical field of cable-stayed bridge tower construction, and in particular to a device and method for integrally hoisting a main reinforcement frame of a cable-stayed bridge tower. Background Art

[0002] Cable towers are one of the key load-bearing structures of cable-stayed bridges. Currently, existing cable tower construction methods for cable-stayed bridges mostly use a climbing formwork process. This process involves tying steel bars, erecting formwork, and pouring concrete on the ground to complete the first cable tower segment. Then, based on the first cable tower segment, further tying steel bars, moving the formwork upward, and pouring concrete are repeated in this cycle. However, during this construction process, the steel bars between the upper and lower cable tower segments must first be hoisted in bundles using a tower crane, and then manually tied one by one. This is not only time-consuming and labor-intensive, but also inefficient and detrimental to construction progress. Summary of the Invention

[0003] The present invention provides a device and method for integrally lifting the main reinforcement frame of a cable-stayed bridge tower, which is easy to operate, has a high degree of assembly, and promotes construction efficiency, and can solve at least one of the above-mentioned technical problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

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

[0006] The ends of every four I-beams with holes are connected to form a frame shape, and assembled to form a square frame. There are multiple square frames, and the multiple square frames are distributed vertically and spaced apart, and are arranged parallel to each other.

[0007] There are multiple bidirectional threaded steel bars, which are spaced apart in sequence along the length direction of the perforated I-beam and vertically connect the upper and lower square frames;

[0008] There are multiple scissor jacks, which are centrally connected to the edges of two upper and lower adjacent square frames.

[0009] Furthermore, it also includes an I-beam connecting piece, through which two adjacent open-hole I-beams are connected, and I-beam connecting holes are opened at both ends of the open-hole I-beam, and the I-beam connecting piece is assembled and fixed to the I-beam connecting holes.

[0010] Furthermore, the perforated I-beam is provided with steel bar fixing holes spaced evenly in sequence along the length direction, and the bidirectional threaded steel bars are passed through the steel bar fixing holes.

[0011] Furthermore, it also includes a steel bar fixing component, which has multiple steel bar fixing components and is respectively installed in the steel bar fixing holes. The bidirectional threaded steel bars pass through the steel bar fixing components and are assembled and fixed with the steel bar fixing holes.

[0012] Furthermore, the steel bar fixing assembly includes a steel bar anchor and a steel bar fixing ring, the steel bar fixing ring has two, which are stacked up and down, and the steel bar anchor is passed through the interior of the two steel bar fixing rings. The steel bar anchor is composed of two identical wedge-shaped bodies, and the inner wall of the wedge-shaped body is provided with an inwardly concave thread groove along the length direction. The two inwardly concave thread grooves can be assembled to form a threaded through hole. The assembled steel bar anchor is a truncated cone structure with one end larger than the other end. Both ends of the bidirectional threaded steel bar are provided with threaded heads, and the threaded heads are passed through the steel bar anchor from the large head end to match the threaded through hole, and have a movement stroke of squeezing the two wedge-shaped bodies outward and passing through the steel bar anchor and the two steel bar fixing rings in sequence.

[0013] Furthermore, the scissor-type jack includes a jack side support, a perforated steel connecting block and a long connecting bolt. The jack side supports have four strips, which are assembled to form a diamond structure. Bolts are installed at both ends of each jack side support. The left and right ends of the diamond structure are respectively hinged to the perforated steel connecting block via the bolts. The perforated steel connecting block is provided with a threaded hole. The long connecting bolt passes through two of the threaded holes in sequence to connect the two perforated steel connecting blocks. The perforated I-beam is provided with a strip-shaped jack fixing groove in the middle of the outer side. The upper and lower ends of the diamond structure are respectively slidably matched with the two adjacent jack fixing grooves via the bolts.

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

[0015] Furthermore, it also includes a four-legged support, and there are multiple four-legged supports, which are vertically installed at the four corners of the square frame located at the bottom layer.

[0016] A method for integrally hoisting the main reinforcement frame of a cable-stayed bridge tower is implemented using the device for integrally hoisting the main reinforcement frame of a cable-stayed bridge tower, and comprises the following steps:

[0017] S1. Assemble four I-beams with holes into a square frame on the ground in advance;

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

[0019] S3, manually tying and connecting the bidirectional threaded steel bars between the two adjacent square frames using a steel bar fixing assembly;

[0020] S4. The obtained multiple square frame structures distributed in the vertical direction are used as the main reinforcement frame as a whole. Four-leg supports are installed at the four corners of the bottom of the main reinforcement frame as a whole. The lifting grooves are tied and the tower crane is used to lift and align them to the working support plane of the cable tower segment;

[0021] S5. Remove the tower crane, tie and connect the bidirectional threaded steel bars between the two upper and lower adjacent cable tower segments, and remove the steel bar fixing assembly after tying;

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

[0023] The beneficial effects of the present invention are embodied in:

[0024] In the present invention, perforated I-beams are pre-assembled to form a square frame. Multiple square frames are then stacked and fixed vertically in sequence under the support and connection of scissor jacks to form a main reinforcement frame. At the same time, double-threaded steel bars are tied and connected between the upper and lower adjacent layers of square frames and the tower segments using steel bar fixing assemblies to strengthen fixation. This significantly reduces the complexity of main reinforcement connection operations during cable-stayed bridge tower construction and greatly improves the efficiency of workers' individual steel bar tying and welding, thereby ensuring the accuracy of construction results and the convenience of the operation process. This overall lifting device and method has a simple structure, low cost, easy operation, and strong safety, and has broad application prospects in actual engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

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

[0027] Figure 2 It is an axonometric view of an I-beam with a hole according to an embodiment of the present invention.

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

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

[0030] The components in the accompanying drawings are marked as follows: 1. I-beam connecting plate; 2. Bidirectional 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. Long connecting bolt; 6. Four-legged support. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

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

[0034] The ends of each of the four perforated I-beams 3 are connected to form a frame shape, and assembled to form a square frame. There are multiple square frames, and the multiple square frames are distributed vertically and spaced apart, and are arranged parallel to each other.

[0035] There are multiple bidirectional threaded steel bars 2, which are spaced apart in sequence along the length direction of the perforated I-beam 3 and vertically connect the upper and lower square frames;

[0036] There are multiple scissor jacks 5, which are centrally connected to the edges of two upper and lower adjacent square frames.

[0037] See also Figure 1-Figure 2In this embodiment, an I-beam connecting piece 1 is further included. Adjacent I-beams 3 with perforated holes are connected via the I-beam connecting piece 1. Each end of the I-beam 3 has an I-beam connecting hole 301 formed therein. The I-beam connecting piece 1 is assembled and fixed to the I-beam connecting holes 301. Four I-beams 3 with perforated holes are connected end-to-end at a 90-degree angle, and the joints are secured by the I-beam connecting piece 1 to form the square frame.

[0038] See also Figure 1-Figure 2 In this embodiment, the perforated I-beam 3 is provided with steel bar fixing holes 302 evenly spaced along its length, and the bidirectional threaded steel bars 2 are passed through the steel bar fixing holes 302. The bidirectional threaded steel bars 2 serve to connect and reinforce the upper and lower layers of the square frame and the tower segments.

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

[0040] The steel bar fixing assembly 4 includes a steel bar anchor 401 and a steel bar fixing ring 402. The steel bar fixing ring 402 has two, which are stacked up and down. The steel bar anchor 401 passes through the interior of the two steel bar fixing rings 402. The steel bar anchor 401 is composed of two identical wedge-shaped bodies. The inner wall of the wedge-shaped body is provided with an inwardly concave thread groove along the length direction. The two inwardly concave thread grooves can be assembled to form a threaded through hole. The assembled steel bar anchor 401 has a truncated cone structure with one end larger than the other end. Both ends of the bidirectional threaded steel bar 2 are provided with a threaded head. The threaded head passes through the steel bar anchor 401 from the large head end and matches the thread of the threaded through hole, and has a movement stroke of squeezing the two wedge-shaped bodies outward and passing through the steel bar anchor 401 and the two steel bar fixing rings 402 in sequence.

[0041] The two steel bar fixing rings 402 are spliced ​​up and down 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 ring 402 can move left and right in its hole, which can not only stabilize the bidirectional threaded steel bar 2, but also flexibly adjust the position of the steel bar during the process of binding the bidirectional threaded steel bar 2, making the operation more convenient.

[0042] See also 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 long connecting bolt 504. The jack side support 501 has four strips, which are assembled to form a diamond structure. Bolts 502 are installed at both ends of each jack side support 501. The left and right ends of the diamond structure are respectively hinged to the perforated steel connecting block 503 via the bolts. The perforated steel connecting block 503 is provided with a threaded hole. The long connecting bolt 504 passes through 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. The upper and lower ends of the diamond structure are respectively slidably matched with the two upper and lower adjacent jack fixing grooves 304 via the bolts 502.

[0043] Insert the long connecting bolt 504 into the perforated steel connecting block 503, and install the scissor jack 5 in the scissor jack fixing slot 304 to connect the upper and lower layers of the square frames, and slide and adjust the jack side support 501 in the jack fixing slot 304 to adjust the distance between the upper and lower layers of the square frames.

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

[0045] See also Figure 1 In this embodiment, a plurality of quadruped supports 6 are further included, each of which is vertically mounted at the four corners of the square frame located at the bottom layer. The multiple square frames are stacked and fixed in sequence to form a main reinforcement frame. The quadruped supports 6 are mounted at the four bottom corners of the main reinforcement frame, ensuring that the tower crane can hoist the main reinforcement frame onto the working support plane at the cable tower stage, allowing manual tying of the bidirectional threaded steel bars 2 to be performed before the tower crane is removed, thereby improving the crane's turnover efficiency.

[0046] See also Figures 1-4 The embodiment of the present invention further provides a method for integrally hoisting the main reinforcement frame of a cable-stayed bridge tower, which is implemented using the device for integrally hoisting the main reinforcement frame of a cable-stayed bridge tower, and includes the following steps:

[0047] S1. Assemble four I-beams 3 with holes into a square frame on the ground in advance;

[0048] Four prefabricated perforated I-beams 3 are connected end to end at a 90° angle, and the I-beam connecting holes 301 at both ends are used to fix two adjacent perforated I-beams 3 together by means of I-beam connecting pieces 1, thereby forming the square frame.

[0049] S2. Install a scissor jack 5 between each side of two adjacent square frames for adjusting the spacing;

[0050] Insert the connecting long bolt 504 into the perforated steel connecting block 503, and install the scissor jack 5 in the scissor jack fixing slot 304 to connect the upper and lower layers of the square frames. Sliding and adjusting the jack side support 501 in the jack fixing slot 304 can adjust the distance between the upper and lower layers of the square frames, so that the two-way threaded steel bars 2 can be flexibly moved up and down when tying them.

[0051] S3, manually tying and connecting the two-way threaded steel bars 2 between the two upper and lower adjacent square frames with the help of the steel bar fixing assembly 4;

[0052] The 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 ring 402 can be moved 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 process of tying the bidirectional threaded steel bar 2.

[0053] S4. The obtained multiple square frame structures distributed in the vertical direction are used as 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 lifting grooves 303 are tied and hoisted with the help of a tower crane and aligned to the working support plane of the cable tower segment;

[0054] A plurality of the square frames are stacked and fixed in sequence up and down to form a main reinforcement frame as a whole. The four-legged supports 6 are installed at the four corners of the bottom of the main reinforcement frame as a whole, ensuring that the tower crane can hang the main reinforcement frame as a whole on the working support plane of the cable tower stage, and then manually tie the bidirectional threaded steel bars 2, and then remove the tower crane, thereby improving the turnover efficiency of the tower crane;

[0055] S5, remove the tower crane, tie and connect the two-way threaded steel bars 2 between the two adjacent upper and lower cable tower segments, and remove the steel bar fixing assembly 4 after the tying is completed, so as to easily achieve assembly and fixation between the upper and lower cable tower stages;

[0056] S6. Repeat the above steps to hoist and splice the main reinforcement frame 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 cable-stayed bridge tower construction, while significantly improving the efficiency of workers in individually binding and welding rebar, thereby ensuring the accuracy of construction results and the convenience of the work process. This integrated hoisting device and method boasts a simple structure, low cost, easy operation, and strong safety, and has broad application prospects in practical engineering.

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

Claims

1. An integral hoisting device for the main reinforcement of a cable-stayed bridge tower, characterized in that: It comprises a bidirectional threaded steel bar (2), an I-beam with a hole (3) and a scissor jack (5); The ends of every four of the perforated I-beams (3) are connected to form a frame shape, and assembled to form a square frame. There are a plurality of the square frames, and the plurality of the square frames are spaced apart and distributed vertically and parallel to each other. The bidirectional threaded steel bars (2) are provided in plurality and are spaced apart in sequence along the length direction of the perforated I-beam (3), and vertically penetrate the upper and lower square frames; There are a plurality of scissor jacks (5), which are centrally connected to the edges of two upper and lower adjacent square frames.

2. The integral hoisting device for the main reinforcement frame of the cable-stayed bridge tower according to claim 1, characterized in that: It also comprises an I-beam connecting piece (1), two adjacent perforated I-beams (3) are connected via the I-beam connecting piece (1), both ends of the perforated I-beams (3) are provided with I-beam connecting holes (301), and the I-beam connecting piece (1) is assembled and fixed to the I-beam connecting holes (301).

3. The integral hoisting device for the main reinforcement frame of the cable-stayed bridge tower according to claim 1, characterized in that: The perforated I-beam (3) is provided with steel bar fixing holes (302) in sequence and evenly spaced along the length direction, and the bidirectional threaded steel bars (2) are inserted into the steel bar fixing holes (302).

4. The integral hoisting device for the main reinforcement frame of the cable-stayed bridge tower according to claim 3 is characterized in that: It also includes a steel bar fixing component (4), wherein the steel bar fixing component (4) has a plurality of components, which are respectively installed in the steel bar fixing holes (302), and the bidirectional threaded steel bar (2) passes through the steel bar fixing component (4) and is assembled and fixed in the steel bar fixing holes (302).

5. The integral hoisting device for the main reinforcement frame of the cable-stayed bridge tower according to claim 4, characterized in that: The steel bar fixing assembly (4) comprises a steel bar anchor (401) and a steel bar fixing ring (402). The steel bar fixing ring (402) has two steel bar fixing rings (402) which are stacked up and down. The steel bar anchor (401) passes through the interior of the two steel bar fixing rings (402). The steel bar anchor (401) is composed of two identical wedge-shaped bodies assembled together. The inner wall of the wedge-shaped body is provided with an inner concave thread groove along the length direction. The two inner concave thread grooves can be assembled to form a threaded through hole. The assembled steel bar anchor (401) is a truncated cone structure with one end larger than the other end. Both ends of the bidirectional threaded steel bar (2) are provided with thread heads. The thread heads pass through the steel bar anchor (401) from the large end to match the thread of the threaded through hole, and have a movement stroke of extruding the two wedge-shaped bodies outward and passing through the steel bar anchor (401) and the two steel bar fixing rings (402) in sequence.

6. The integral hoisting device for the main reinforcement frame of the cable-stayed bridge tower according to claim 1, characterized in that: The scissor-type jack (5) comprises a jack side support (501), a perforated steel connection block (503) and a long connecting bolt (504). The jack side support (501) has four strips, which are assembled to form a diamond structure. Bolts (502) are installed at both ends of each jack side support (501). The left and right ends of the diamond structure are respectively hinged to the perforated steel connection block (503) via the bolts. The perforated steel connection block (503) is provided with a threaded hole. The long connecting bolt (504) passes through two threaded holes in sequence to connect the two perforated steel connection blocks (503). The perforated I-beam (3) is provided with a strip-shaped jack fixing groove (304) in the middle of the outer side. The upper and lower ends of the diamond structure are respectively slidably matched with the two upper and lower adjacent jack fixing grooves (304) via the bolts (502).

7. The integral hoisting device for the main reinforcement frame of the cable-stayed bridge tower according to claim 1, characterized in that: The perforated I-beam (3) is provided with a strip-shaped hoisting groove (303) in the middle of the inner side, which is used for hoisting the pre-assembled square frame as a whole.

8. The integral hoisting device for the main reinforcement frame of the cable-stayed bridge tower according to claim 1, characterized in that: It also includes a four-legged support (6), which has multiple four-legged supports (6) and is vertically installed at the four corners of the square frame located at the bottom layer.

9. A method for integrally hoisting a main reinforcement frame of a cable-stayed bridge tower, implemented by using the integrally hoisting device for the main reinforcement frame of a cable-stayed bridge tower as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Assemble four I-beams (3) with holes into a square frame on the ground in advance; S2, installing a scissor jack (5) for adjusting the spacing between the sides of two upper and lower adjacent square frames; S3, manually tying and connecting the bidirectional threaded steel bars (2) between two upper and lower adjacent square frames by means of a steel bar fixing assembly (4); S4, the obtained multiple square frame structures distributed in the vertical direction are used as 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, and the lifting grooves (303) are tied and hoisted with the help of a tower crane and aligned to the working support plane of the cable tower segment; S5, removing the tower crane, tying and connecting the bidirectional threaded steel bars (2) between two upper and lower adjacent cable tower segments, and removing the steel bar fixing assembly (4) after tying; S6. Repeat the above steps to hoist and splice the main reinforcement frame of the next cable-stayed bridge tower segment as a whole.

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