Cable-stayed bridge main tower bracket steel anchor beam construction structure

Abstract

The utility model relates to a cable-stayed bridge main tower bracket steel anchor beam construction structure which comprises a steel anchor beam, an assembling jig frame, a tower column, an in-situ jig frame and a falling support. The assembling jig frame is used for assembling the steel anchor beam; the bracket wall plates are fixedly installed at the two ends of the steel anchor beam, the anchor box units are installed above the two ends of the steel anchor beam, the bracket web plates are arranged between the lower portions of the two ends of the steel anchor beam and the bracket wall plates, and the stiffening plates are arranged on the steel anchor beam and the bracket web plates. The bracket steel anchor beam assembling jig frame and the in-situ jig frame have the advantages that the bracket steel anchor beam assembling jig frame and the in-situ jig frame are provided, the requirement for efficient assembling of complex bracket steel anchor beams in a factory area and a construction site is met by changing the structural design, and the manufacturing precision of the bracket steel anchor beams is improved; the steel anchor beam positioning support is provided, a steel anchor beam high-precision positioning platform is composed of the following device, the jack and the like, the positioning precision of the steel anchor beam is improved, and the construction difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the field of bridge engineering, in particular to a cable-stayed bridge main tower corbel steel anchor beam construction structure. Background Art

[0002] In bridge engineering construction, it is necessary to continuously improve the level of bridge construction technology in practice. In the construction of large-span cable-stayed bridges, the application of steel anchor beam construction technology has significant effects and high construction efficiency. It is suitable for bridge construction and operation under complex and special terrain conditions, and can provide guarantee for the safe passage of vehicles.

[0003] The following difficulties are encountered in the construction of the steel anchor beams of the main tower of a cable-stayed bridge: (1) the traditional assembly cradle is difficult to apply to the steel anchor beams with complex structures, resulting in low manufacturing precision of the steel anchor beams in the factory; (2) the construction quality of the steel anchor beams is poor during the in-situ or reverse installation construction; and (3) the level of automation of the steel anchor beam segments during the lifting process is low.

[0004] In view of this, in response to a series of problems arising during the construction of the main tower corbel steel anchor beam, it is urgent to invent a simple and effective cable-stayed bridge main tower corbel steel anchor beam construction structure to reduce the difficulty of steel anchor beam bracket construction, improve the installation accuracy of steel anchor beams, reduce construction safety risks, and speed up construction progress. Utility Model Content

[0005] The utility model aims to overcome the deficiencies in the prior art and provide a cable-stayed bridge main tower corbel steel anchor beam construction structure.

[0006] The cable-stayed bridge main tower corbel steel anchor beam construction structure comprises a steel anchor beam, an assembled frame, a tower column, an in-situ frame and a drop bracket;

[0007] The assembly frame is used to assemble the steel anchor beam; the two ends of the steel anchor beam are fixedly installed with corbel wall plates, the two ends of the steel anchor beam are installed above the anchor box units, the two ends of the steel anchor beam are provided with bracket webs below and between the corbel wall plates, and the steel anchor beam and the bracket webs are provided with stiffening plates;

[0008] The in-situ tire frame includes a mobile frame supported below both ends of the steel anchor beam;

[0009] A lifting truss is provided on the bridge deck between the towers, and the steel anchor beam segments are temporarily placed on the landing brackets; the lifting truss is used to lift the steel anchor beam.

[0010] Preferably, the steel anchor beam comprises a cable guide tube, a PBL component, an anchor box unit, a stiffening plate, a connecting plate, a corbel wall plate, a lower cover plate, shear nails and a bracket web, and a cable guide tube, a PBL component and shear nails are provided on the outer side of the corbel wall plate.

[0011] Preferably, the assembly frame is arranged on the assembly ground, and an embedded block is provided on the assembly ground outside the corbel wall panel, a miniature jack is provided between the bottom of the corbel wall panel and the embedded block, a telescopic brace is provided on the side of the corbel wall panel away from the assembly frame, a special-shaped positioning piece is engaged with the upper part of the corbel wall panel, the special-shaped positioning piece is inserted into the telescopic brace, a bottom support is provided at the bottom of the telescopic brace, the assembly frame includes an assembly surface, a support rod, a cross rod and a connecting rod, an L-shaped telescopic rod is provided at the bottom of both ends of the assembly surface, and a movable clamp, a baffle, a movable block and a tightener are provided on the L-shaped telescopic rod.

[0012] Preferably, a moving device is provided at the bottom of the moving frame, miniature jacks are vertically provided on both sides of the moving device, an upper plane plate is provided on the top of the moving frame, multiple rows of jacks are provided on the upper plane plate, a bracket web clamp is provided on the top of the jack supported under the bracket web, a groove is provided on the bracket web clamp, the stiffening plate on the bracket web is inserted into the groove, steel anchor beams are provided on the top of the remaining jacks, and diagonal braces are provided on the outer side of the corbel wall panel.

[0013] Preferably, a rigid frame is provided on the tower column, and tower column formworks are provided on opposite sides of the rigid frame on the tower columns on both sides. The steel corbels are temporarily fixed on opposite sides of the tower column formworks by fall chains, the top of the lifting chain is connected to the rigid frame, a landing plate is provided on the landing bracket, the steel anchor beam segment is temporarily placed on the landing plate, a miniature jack is provided at the bottom of the landing plate, follow-up devices are provided on both sides of the landing plate, a movable groove is provided on the follow-up device, an L-shaped connector is fixedly connected to the bottom of the landing plate, and the L-shaped connector is inserted in the movable groove.

[0014] Preferably, the cast tower column is connected with a steel formwork, a steel anchor beam is embedded in the tower column, and a temporary fixing bracket is provided on the steel anchor beam. The temporary fixing bracket includes a base, a column, a connecting rod and an I-beam.

[0015] Preferably, the lifting truss is arranged on the bridge deck, and the lifting truss includes a horizontal connecting rod, a channel steel slide rail and a movable cross bar. The channel steel slide rail includes a channel steel. A lifting rope is arranged on the movable cross bar. The anchor box unit is placed on the in-situ tire frame. Rolling wheels are arranged at both ends of the movable cross bar, and the rolling wheels roll in the channel steel.

[0016] The beneficial effects of the utility model are:

[0017] 1) The utility model proposes a corbel steel anchor beam assembly cradle and an in-situ cradle, which can meet the requirements of efficient assembly of complex corbel steel anchor beams in factories and construction sites by changing the structural design, thereby improving the manufacturing accuracy of corbel steel anchor beams.

[0018] 2) The utility model proposes a steel anchor beam positioning bracket, a high-precision steel anchor beam positioning platform composed of a following device and a jack, etc., which improves the positioning accuracy of the steel anchor beam and reduces the construction difficulty.

[0019] 3) The utility model pre-buries a temporary fixing bracket in the main tower, which improves the pre-buried accuracy of the steel anchor beam corbel and improves the construction quality.

[0020] 4) The utility model realizes high-quality lifting of the bracket unit and reduces the construction difficulty by forming a lifting and translation system through a mobile cross bar, a channel steel slide rail, a mobile drive device and a lifting truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a conventional steel anchor beam of the utility model;

[0022] Figure 2 This is a schematic diagram of the steel anchor beam assembly tire frame;

[0023] Figure 3 This is a top view of the steel anchor beam assembly frame;

[0024] Figure 4 It is the structural intention of the in-situ tire frame of the steel anchor beam;

[0025] Figure 5 is a schematic diagram of the bracket web clamp;

[0026] Figure 6 This is a schematic diagram of the steel anchor beam placement bracket;

[0027] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of the A area in the middle;

[0028] Figure 8 This is a schematic diagram of the reverse installation of embedded corbels on steel anchor beams;

[0029] Fig. 9 It is a schematic diagram of the temporary fixed support structure;

[0030] Fig.10 This is the technical diagram of the separate installation of the steel anchor beam and the corbel unit;

[0031] Fig.11 This is a schematic diagram of the separate lifting of the bracket unit;

[0032] Fig.12 This is a construction diagram of the hoisting and translation system;

[0033] Fig.13 It is a detailed schematic diagram of the lifting and translation system.

[0034] Among them: 1-cable guide tube, 2-PBL parts, 3-steel anchor beam, 4-anchor box unit, 5-stiffener, 6-connecting plate, 7-corbel wall plate, 8-lower cover plate, 9-shear nail, 10-bracket web, 11-mobile fixture, 12-baffle, 13-movable block, 14-tightener, 15-L-shaped telescopic rod, 16-assembly ground, 17-support rod, 18-cross bar, 19-connecting rod, 20-micro jack, 21-embedded block, 22-bottom support, 23-telescopic rod diagonal brace, 24-special-shaped positioning parts, 25-assembly surface, 26-bolt, 27-jack, 28-upper platform plate, 29-mobile frame, 30-mobile device, 31-lower platform plate, 32-bracket web fixture, 3 3-diagonal brace, 34-groove, 35-assembly frame, 36-tower column, 37-rigid frame, 38-tower column formwork, 39-falling chain, 40-follow-up device, 41-movable groove, 42-L-shaped connector, 43-landing plate, 44-steel anchor beam segment, 45-steel anchor beam corbel, 46-landing bracket, 47-cast tower column, 48-steel formwork, 49-tower column to be cast, 50-temporary fixed bracket, 51-column, 52-connecting rod, 53-I-beam, 54-tower column, 55-in-situ frame, 56-channel steel slide rail, 57-moving cross bar, 58-lifting rope, 59-bridge deck, 60-moving drive device, 61-flat connecting rod, 62-channel steel, 63-rolling wheel, 64-lifting truss. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0036] Embodiment 1

[0037] As an example, Figures 1 to 13 As shown, the cable-stayed bridge main tower corbel steel anchor beam construction structure includes a steel anchor beam 3, an assembly frame 35, a tower column 36, an in-situ frame and a landing bracket 46;

[0038] like Figure 2 and Figure 3As shown, the assembling frame 35 is used to assemble the steel anchor beam 3; the assembling frame 35 is arranged on the assembling ground 16, and an embedded block 21 is provided on the assembling ground 16 outside the corbel wall panel 7, and a miniature jack 20 is provided between the bottom of the corbel wall panel 7 and the embedded block 21, and a telescopic brace 23 is provided on the side of the corbel wall panel 7 away from the assembling frame 35, and a special-shaped positioning piece 24 is engaged with the upper part of the corbel wall panel 7, and the special-shaped positioning piece 24 is inserted into the telescopic brace 23, and a bottom support 22 is provided at the bottom of the telescopic brace 23, and the assembling frame 35 includes an assembling surface 25, a strut 17, a cross bar 18 and a connecting rod 19, and L-shaped telescopic rods 15 are provided at the bottom of both ends of the assembling surface 25, and a movable clamp 11, a baffle 12, a movable block 13 and a tightener 14 are provided on the telescopic rod of the L-shaped telescopic rod 15.

[0039] like Figure 1 As shown, the steel anchor beam 3 includes a cable guide tube 1, a PBL component 2, an anchor box unit 4, a stiffening plate 5, a connecting plate 6, a corbel wall panel 7, a lower cover plate 8, a shear nail 9 and a bracket web 10. The outer side of the corbel wall panel 7 is provided with a cable guide tube 1, a PBL component 2 and a shear nail 9.

[0040] The two ends of the steel anchor beam 3 are fixedly installed with corbel wall plates 7, the two ends of the steel anchor beam 3 are installed with anchor box units 4 above, the two ends of the steel anchor beam 3 are provided with bracket webs 10 below and between the two ends of the steel anchor beam 3 and the corbel wall plates 7, and the steel anchor beam 3 and the bracket webs 10 are provided with stiffening plates 5;

[0041] A moving device 30 is provided at the bottom of the moving frame 29, and miniature jacks 20 are vertically provided on both sides of the moving device 30. An upper plane plate 28 is provided on the top of the moving frame 29, and multiple rows of jacks 27 are provided on the upper plane plate 28. A bracket web clamp 32 is provided on the top of the jack 27 supported under the bracket web 10, and a groove 34 is provided on the bracket web clamp 32. The stiffening plate 5 on the bracket web 10 is inserted into the groove 34, and a steel anchor beam 3 is provided on the top of the remaining jacks 27, and a diagonal brace 33 is provided on the outer side of the corbel wall plate 7.

[0042] Embodiment 2

[0043] As another embodiment, this embodiment 2 proposes a more specific cable-stayed bridge main tower corbel steel anchor beam construction structure based on the embodiment 1:

[0044] like Figure 4 As shown, the in-situ tire frame includes a mobile frame 29, and the mobile frame 29 is supported below the two ends of the steel anchor beam 3;

[0045] like Fig.10 and Fig.11 As shown, a lifting truss 64 is provided on the bridge deck 59 between the towers 36 , and the steel anchor beam segment 44 is temporarily placed on the landing bracket 46 ; the lifting truss 64 is used to lift the steel anchor beam 3 .

[0046] like Figure 6 and Figure 7 As shown, a rigid frame 37 is arranged on the tower column 36, and tower column formworks 38 are arranged on opposite sides of the rigid frame 37 on the tower columns 36 on both sides. Steel corbels 45 are temporarily fixed on opposite sides of the tower column formworks 38 through fall chains 39. The top of the lifting chain 39 is connected to the rigid frame 37. A landing plate 43 is arranged on the landing bracket 46. The steel anchor beam segment 44 is temporarily placed on the landing plate 43. A miniature jack 20 is arranged at the bottom of the landing plate 43. Follow-up devices 40 are arranged on both sides of the landing plate 43. A movable groove 41 is arranged on the follow-up device 40. An L-shaped connecting piece 42 is fixedly connected to the bottom of the landing plate 43, and the L-shaped connecting piece 42 is inserted into the movable groove 41.

[0047] like Figure 8 and Fig. 9 As shown, the steel formwork 48 is attached to the cast tower column 47 , the steel anchor beam 3 is pre-buried in the tower column 36 , and a temporary fixing bracket 50 is provided on the steel anchor beam 3 , and the temporary fixing bracket 50 includes a base 22 , a column 51 , a connecting rod 52 and an I-beam 53 .

[0048] like Figures 11 to 13 As shown, the lifting truss 64 is arranged on the bridge deck 59, and the lifting truss 64 includes a horizontal connecting rod 61, a channel steel slide rail 56 and a movable cross bar 57. The channel steel slide rail 56 includes a channel steel 62. A lifting rope 58 is arranged on the movable cross bar 57. The anchor box unit 4 is placed on the in-situ tire frame 55. Rolling wheels 63 are arranged at both ends of the movable cross bar 57, and the rolling wheels 63 roll in the channel steel 62.

[0049] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0050] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A cable-stayed bridge main tower bracket steel anchor beam construction structure, characterized in that: It includes steel anchor beam, assembly frame, tower column, in-situ frame and landing bracket; The assembly frame is used to assemble the steel anchor beam; the two ends of the steel anchor beam are fixedly installed with corbel wall plates, the two ends of the steel anchor beam are installed above the anchor box units, the two ends of the steel anchor beam are provided with bracket webs below and between the corbel wall plates, and the steel anchor beam and the bracket webs are provided with stiffening plates; The in-situ tire frame includes a mobile frame supported below both ends of the steel anchor beam; A lifting truss is provided on the bridge deck between the towers, and the steel anchor beam segments are temporarily placed on the landing brackets; the lifting truss is used to lift the steel anchor beam.

2. The cable-stayed bridge main tower corbel steel anchor beam construction structure according to claim 1 is characterized by: The steel anchor beam comprises a cable guide tube, a PBL component, an anchor box unit, a stiffening plate, a connecting plate, a corbel wall plate, a lower cover plate, a shear nail and a bracket web plate. The outer side of the corbel wall plate is provided with a cable guide tube, a PBL component and a shear nail.

3. The cable-stayed bridge main tower corbel steel anchor beam construction structure according to claim 1 is characterized by: The assembly frame is arranged on the assembly ground, and an embedded block is arranged on the assembly ground outside the corbel wall panel, a miniature jack is arranged between the bottom of the corbel wall panel and the embedded block, a telescopic brace is arranged on the side of the corbel wall panel away from the assembly frame, a special-shaped positioning piece is engaged with the upper part of the corbel wall panel, the special-shaped positioning piece is inserted into the telescopic brace, a bottom support is arranged at the bottom of the telescopic brace, the assembly frame includes an assembly surface, a support rod, a cross rod and a connecting rod, an L-shaped telescopic rod is arranged at the bottom of both ends of the assembly surface, and a movable clamp, a baffle, a movable block and a tightener are arranged on the L-shaped telescopic rod.

4. The cable-stayed bridge main tower corbel steel anchor beam construction structure according to claim 1 is characterized by: A moving device is arranged at the bottom of the moving frame, miniature jacks are arranged vertically on both sides of the moving device, an upper plane plate is arranged at the top of the moving frame, a plurality of rows of jacks are arranged on the upper plane plate, a bracket web clamp is arranged on the top of the jack supported under the bracket web, a groove is arranged on the bracket web clamp, the stiffening plate on the bracket web is inserted into the groove, steel anchor beams are arranged on the top of the remaining jacks, and diagonal braces are arranged on the outer side of the corbel wall plate.

5. The cable-stayed bridge main tower corbel steel anchor beam construction structure according to claim 1 is characterized by: A rigid frame is arranged on the tower column, and tower column formworks are arranged on opposite sides of the rigid frame on the tower columns on both sides. Steel bull legs are temporarily fixed on opposite sides of the tower column formworks through fall chains, and the top of the lifting chain is connected to the rigid frame. A landing plate is arranged on the landing bracket, and the steel anchor beam segment is temporarily placed on the landing plate. A miniature jack is arranged at the bottom of the landing plate, and follow-up devices are arranged on both sides of the landing plate. A movable groove is arranged on the follow-up device. An L-shaped connecting piece is fixedly connected to the bottom of the landing plate, and the L-shaped connecting piece is inserted in the movable groove.

6. The cable-stayed bridge main tower corbel steel anchor beam construction structure according to claim 5, characterized in that: The cast tower column is connected with the steel formwork, the steel anchor beam is embedded in the tower column, and a temporary fixing bracket is arranged on the steel anchor beam. The temporary fixing bracket includes a base, a column, a connecting rod and an I-beam.

7. The cable-stayed bridge main tower corbel steel anchor beam construction structure according to claim 1 is characterized by: The lifting truss is installed on the bridge deck. The lifting truss includes a horizontal connecting rod, a channel steel slide rail and a movable cross bar. The channel steel slide rail includes a channel steel. A lifting rope is arranged on the movable cross bar. The anchor box unit is placed on the original tire frame. Rolling wheels are arranged at both ends of the movable cross bar, and the rolling wheels roll in the channel steel.

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