A support structure for bridge batter column segment installation and method of installation thereof

Abstract

The application discloses a support structure for bridge inclined tower column segment installation and a mounting method thereof, three inclined support pipe bottom ends are fixed with a bridge deck, three inclined support pipe top ends extend towards the top surface of a steel-concrete combined segment directly above, and the inclination angles of the three inclined support pipes are the same as the inclination angle of the inclined tower column segment; each support cross beam can be fixed on the top end of one inclined support pipe or the top ends of two inclined support pipes, the top surfaces of the support cross beams are flush, and the inclination angle of the plane formed by the top surfaces of the support cross beams is the same as the inclination angle of the inclined tower column segment; each inclined slide is fixed with the top surface of the corresponding support cross beam, the top surfaces of the inclined slides are flush, and the inclination angle of the plane formed by the top surfaces of the inclined slides is the same as the inclination angle of the inclined tower column segment. The support structure is simple in process, high in installation efficiency, and greatly reduces the construction difficulty of the installation of the inclined tower column segment.

Description

Technical Field

[0001] This invention relates to a support structure for the installation of bridge inclined tower column segments and its installation method. Background Technology

[0002] When constructing steel inclined towers for suspension bridges or cable-stayed bridges on the bridge deck, segmental hoisting is typically employed due to factors such as volume, weight, and construction difficulty.

[0003] Specifically, the process involves first installing a rigid frame on the bridge deck, then hoisting the steel-concrete composite section onto the rigid frame, adjusting its posture to meet design requirements, fixing it in place, installing reinforcing bars, and pouring concrete for the steel-concrete composite section. Next, the bottommost inclined tower segment is installed, its tilt angle is adjusted to match the design tilt angle, and then it is welded to the steel-concrete composite section before concrete pouring. Following this, the inclined tower segment above the bottommost segment is hoisted onto the top of the bottommost segment, its posture is adjusted to meet design requirements, and then it is welded in place before concrete is poured. This process is repeated until the entire inclined tower is completed.

[0004] The bottommost inclined tower segment is significantly heavier and larger than the others. Maintaining its tilt during hoisting—that is, ensuring its stability during suspended installation—is a major challenge. Furthermore, if there is a precision error in the tilt angle between the bottommost segment and the steel-concrete composite section, adjusting the tilt angle of the bottommost segment after they are joined becomes extremely difficult.

[0005] It is necessary to design a support structure for supporting the inclined tower column segments during hoisting to improve construction speed and ensure construction safety. Summary of the Invention

[0006] This invention provides a support structure and installation method for the segmental installation of inclined bridge towers, overcoming the shortcomings of the prior art. One of the technical solutions adopted by this invention to solve its technical problem is:

[0007] A support structure for installing inclined tower segments of bridges is applicable to bridge decks with pre-cast reinforced concrete composite sections. The inclination angle of the reinforced concrete composite section is the same as that of the inclined tower segment, and the top surface of the reinforced concrete composite section is perpendicular to its central axis. The support structure includes:

[0008] The support frame includes three parallel and spaced inclined support pipes. The bottom ends of the three inclined support pipes are fixed to the bridge deck, and the top ends of the three inclined support pipes extend directly above the top surface of the steel-concrete composite section. The inclination angle of the three inclined support pipes is the same as the inclination angle of the inclined tower column segment.

[0009] At least two support beams, each of which can be fixed to the top of one of the inclined support pipes or to the top of both inclined support pipes at the same time. The top surfaces of each support beam are flush with each other, and the inclination angle of the plane formed by the top surfaces of the support beams is the same as the inclination angle of the inclined tower column segment.

[0010] At least two inclined slides are provided, each of which is fixed to the top surface of the corresponding support beam. The top surfaces of each inclined slide are flush with each other, and the inclination angle of the plane formed by the top surfaces of the inclined slides is the same as the inclination angle of the inclined tower column segment. During the hoisting process, the inclined tower column segment can slide down along the top surface of the inclined slide until the bottom surface of the inclined tower column segment is in contact with the top surface of the steel-concrete composite section.

[0011] In a preferred embodiment, the three inclined support tubes are a first inclined support tube, a second inclined support tube, and a third inclined support tube, and the three inclined support tubes are arranged in an isosceles triangle on the bridge deck, with the second inclined support tube and the third inclined support tube located on the same side.

[0012] The support beams are provided in two parallel arrangement. The two support beams are the first support beam and the second support beam. The bottom end of the first support beam is fixedly connected to the top end of the first inclined support tube, and the bottom end of the second support beam is fixedly connected to both the second and third inclined support tubes.

[0013] The inclined slide has two sections, namely the first inclined slide and the second inclined slide. The first inclined slide and the second inclined slide are arranged in parallel and are both fixedly connected to the first support beam and the second support beam. The two inclined slides and the two support beams are arranged in a grid pattern.

[0014] In a preferred embodiment, the support bracket further includes three sets of diagonal braces, which are respectively fixed between the first inclined support tube and the second inclined support tube, between the second inclined support tube and the third inclined support tube, and between the third inclined support tube and the first inclined support tube.

[0015] In a preferred embodiment, each set of diagonal braces includes a first diagonal brace, a second diagonal brace, and a third diagonal brace. Both ends of the first diagonal brace, both ends of the second diagonal brace, and both ends of the third diagonal brace are respectively fixedly connected to two inclined support tubes, and the first diagonal brace, the second diagonal brace, and the third diagonal brace are arranged to form a Z-shape.

[0016] In a preferred embodiment, the top ends of the first inclined support tube, the second inclined support tube, and the third inclined support tube are respectively cut into a first inclined surface, a second inclined surface, and a third inclined surface with the same inclination angle as the inclined tower column segment. A first cover plate, a second cover plate, and a third cover plate are respectively welded to the first inclined surface, the second inclined surface, and the third inclined surface. The bottom end of the first support beam is welded to the first cover plate, and the bottom end of the second support beam is welded to both the second cover plate and the third cover plate.

[0017] In a preferred embodiment, the first supporting beam includes a first beam body formed by splicing two I-beams, and a first reinforcing plate is provided on both sides of the first beam body, the first reinforcing plate being fixedly connected to a first cover plate; the second supporting beam includes a second beam body formed by splicing two I-beams, and a second reinforcing plate is provided on both sides of the second beam body, the second reinforcing plate being fixedly connected to a second cover plate or a third cover plate.

[0018] In a preferred embodiment, the length of the first support beam is the same as the length of the second support beam, and the length of the first support beam is greater than the width of the inclined tower column segment.

[0019] In a preferred embodiment, a number of spaced buffer sliding blocks are fixed to the top surfaces of the two inclined slides or the sides of the inclined tower column segments that cooperate with the inclined slides.

[0020] In a preferred embodiment, the buffer sliding block is made of MGE plate, and a fixing steel plate is welded to the side of the inclined tower column segment that cooperates with the inclined slide. The buffer sliding block and the fixing steel plate are fixed by countersunk screws.

[0021] The second technical solution adopted by this invention to solve its technical problem is:

[0022] An installation method for a support structure used in the installation of bridge inclined tower segments, comprising:

[0023] Step 10: Calculate the installation position of the support bracket based on the inclination angle and size of the inclined tower column segment, and lay out the lower end position of the inclined support pipe during bridge deck construction, and then pre-embed the base steel plate to form the embedded part.

[0024] Step 20: Set the inclined support pipes according to the preset inclination angle, and weld the bottom ends of the three inclined support pipes to the embedded parts for fixation;

[0025] Step 30: Weld the three sets of diagonal braces between the first and second inclined support tubes, between the second and third inclined support tubes, and between the third and first inclined support tubes, respectively.

[0026] Step 40: Measure the lengths of the first inclined support pipe, the second inclined support pipe, and the third inclined support pipe, as well as the cutting angle at the top. Then, cut the tops of the first inclined support pipe, the second inclined support pipe, and the third inclined support pipe into first inclined surfaces, second inclined surfaces, and third inclined surfaces with the same inclination angle as the inclined tower column segment, respectively. Then, weld the first cover plate, the second cover plate, and the third cover plate to the first inclined surfaces, the second inclined surfaces, and the third inclined surfaces, respectively.

[0027] Step 50: Weld the bottom end of the first support beam to the first cover plate, and then weld the bottom end of the second support beam to both the second and third cover plates. At this time, the plane formed by the top surface of the first and second support beams is arranged perpendicular to the top surface of the steel-concrete composite section.

[0028] Step 60: Weld the first inclined slide and the second inclined slide to the left and right sides of the first support beam and the second support beam respectively, and the two inclined slides and the two support beams are arranged in a grid shape.

[0029] Compared with the prior art, this technical solution has the following advantages:

[0030] 1. Because the inclination angle of the plane formed by the top surfaces of the inclined slide is the same as the inclination angle of the inclined tower column segment, and the inclination angle of the steel-concrete composite section is the same as the inclination angle of the inclined tower column segment, the inclined tower column segment can slide downwards along the top surface of the inclined slide during hoisting until the bottom surface of the inclined tower column segment is in contact with the top surface of the steel-concrete composite section. At this point, the inclination angle of the inclined tower column segment is the preset angle. This support structure not only has a simple process and high installation efficiency, but also eliminates the need to temporarily adjust the inclination angle of the inclined tower column segment during hoisting, greatly reducing the construction difficulty of installing the inclined tower column segment.

[0031] Meanwhile, since the tops of the three inclined support pipes all extend directly upwards from the top surface of the steel-concrete composite section, and the inclination angles of the three inclined support pipes are the same as the inclination angles of the inclined tower column segments, each inclined support pipe, the bridge deck, and the side of the inclined tower column segment form an equilateral triangle shape. In this configuration, the inclined support pipes exhibit the best stress-bearing effect and are most stable, capable of withstanding greater axial forces. Therefore, this support structure boasts good stability and a high safety factor.

[0032] 2. The two inclined slides and the two supporting beams are arranged in a grid pattern to further improve the stability of the support structure.

[0033] 3. The support frame also includes three sets of diagonal braces, each set of diagonal braces can connect and support two inclined support tubes to improve the stability of the support frame.

[0034] 4. The length of the first support beam is the same as that of the second support beam, and the length of the first support beam is greater than the width of the inclined tower column segment. Therefore, during the installation process, the two inclined slides have more room for adjustment within the length range of the two support beams.

[0035] 5. Several spaced buffer sliding blocks are fixed to the top surface of the two inclined slides or the side of the inclined tower column segment that cooperates with the inclined slide. These buffer sliding blocks can buffer the impact of the inclined tower column segment on the support bracket during the hoisting and lowering process, so as to avoid damage to the inclined tower column segment. Attached Figure Description

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Figure 1 A schematic diagram of the elevation structure of the support structure, the steel-concrete composite section, and the inclined tower column section of a preferred embodiment is shown.

[0038] Figure 2 illustrates Figure 1 Schematic diagram of AA section.

[0039] Figure 3 illustrates Figure 1 Schematic diagram of AA section.

[0040] Figure 4 It is illustrated Figure 1 Enlarged diagram of point C.

[0041] Figure 5 A cross-sectional schematic diagram of a preferred embodiment of a buffer sliding block is shown.

[0042] Figure 6 A bottom plane structural diagram of a buffer sliding block according to a preferred embodiment is shown.

[0043] Figure 7 A schematic diagram illustrating the location of an embedded part on the bridge deck according to a preferred embodiment is shown.

[0044] Figure 8 A top view of a preferred embodiment of the embedded part is shown.

[0045] Figure 9 One of the construction steps for the steel-concrete composite section is illustrated.

[0046] Figure 10 The second diagram illustrates the construction steps of the steel-concrete composite section.

[0047] Figure 11 One of the schematic diagrams shows the state of the support structure supporting the inclined tower column segment, where no concrete has been poured.

[0048] Figure 12The second schematic diagram shows the state of the support structure supporting the inclined tower column segment, at which point the concrete has been poured. Detailed Implementation

[0049] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0050] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0051] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly, that is, any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connections, detachable fixed connections, integral connections and fixed connections through other devices or elements.

[0052] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0053] Please refer to Figures 1 to 12 A preferred embodiment of a support structure for installing inclined tower segments of a bridge is disclosed. This support structure is suitable for bridge deck 20 with a steel-concrete composite section 10. The inclination angle of the steel-concrete composite section 10 is the same as the inclination angle of the inclined tower segment 30, and the top surface of the steel-concrete composite section 10 is perpendicular to its central axis. In this embodiment, the inclination angles of both the inclined tower segment 30 and the steel-concrete composite section 10 are 60 degrees.

[0054] The support structure includes: a support bracket 40, at least two support beams 50, and at least two inclined slides 60.

[0055] The support bracket 40 includes three parallel and spaced-apart inclined support pipes. The bottom ends of the three inclined support pipes are fixed to the bridge deck 20, and the top ends of the three inclined support pipes extend directly above the top surface of the steel-concrete composite section 10. The inclination angle D of the three inclined support pipes is the same as the inclination angle of the inclined tower column segment 30, which is 60 degrees. In this embodiment, the three inclined support pipes are made of steel pipes.

[0056] In this embodiment, as shown in Figure 2, the three inclined support pipes are a first inclined support pipe 41, a second inclined support pipe 42, and a third inclined support pipe 43. The three inclined support pipes are arranged in an isosceles triangle on the bridge deck, with the second inclined support pipe 42 and the third inclined support pipe 43 located on the same side. Furthermore, the second inclined support pipe 42 and the third inclined support pipe 43 are close to the steel-concrete composite section 10.

[0057] The connection between the inclined support pipe and the bridge deck 20 is as follows:

[0058] During the construction of bridge deck 20, the lower end position of the inclined support pipe is marked out, and then the base steel plate 21 is pre-embedded to form the embedded part. For example... Figure 7 As shown, there are three base steel plates 21, and the arrangement of the three base steel plates 21 is the same as the arrangement of the three inclined support pipes. The two base steel plates 21 on the same side are close to the central axis surface of the steel-concrete composite section 10. Moreover, the line connecting the center points of the two base steel plates 21 on the same side is parallel to the central axis surface 11 of the steel-concrete composite section 10.

[0059] In this embodiment, the support bracket further includes three sets of diagonal braces 44, which are respectively fixed between the first inclined support tube 41 and the second inclined support tube 42, between the second inclined support tube 42 and the third inclined support tube 43, and between the third inclined support tube 43 and the first inclined support tube 41.

[0060] In this embodiment, as Figure 1 As shown, each set of diagonal bracing rods 44 includes a first diagonal bracing rod 441, a second diagonal bracing rod 442, and a third diagonal bracing rod 443. Both ends of the first diagonal bracing rod 441, both ends of the second diagonal bracing rod 442, and both ends of the third diagonal bracing rod 443 are respectively fixedly connected to two inclined support tubes, and the first diagonal bracing rod 441, the second diagonal bracing rod 442, and the third diagonal bracing rod 443 are arranged to form a Z-shape.

[0061] Each support beam 50 can be fixed to the top of one inclined support pipe individually or to the top of two inclined support pipes simultaneously. The top surfaces of each support beam 50 are flush with each other, and the inclination angle of the plane formed by the top surfaces of the support beams 50 is the same as the inclination angle of the inclined tower column segment 30.

[0062] In this embodiment, since the second inclined support tube 42 and the third inclined support tube 43 are located on the same side, there are two support beams 50 arranged in parallel. The two support beams 50 are the first support beam 51 and the second support beam 52. The bottom end of the first support beam 51 is fixedly connected to the top end of the first inclined support tube 41, and the bottom end of the second support beam 52 is simultaneously fixedly connected to the second inclined support tube 42 and the third inclined support tube 43.

[0063] In this embodiment, the top ends of the first inclined support pipe 41, the second inclined support pipe 42, and the third inclined support pipe 43 are respectively cut into a first inclined surface, a second inclined surface, and a third inclined surface with the same inclination angle as the inclined tower column segment 30. A first cover plate 411, a second cover plate, and a third cover plate are respectively welded to the first inclined surface, the second inclined surface, and the third inclined surface. The bottom end of the first support beam 51 is welded to the first cover plate, and the bottom end of the second support beam 52 is welded to both the second cover plate and the third cover plate.

[0064] In this embodiment, as Figure 4 As shown, the first supporting beam 51 includes a first beam body 511 spliced ​​from two I-beams. A first reinforcing plate 512 is provided on both sides of the first beam body 511, and the first reinforcing plate 512 is fixedly connected to the first cover plate 411. The second supporting beam 52 has the same structure as the first supporting beam, including a second beam body spliced ​​from two I-beams. A second reinforcing plate is provided on both sides of the second beam body, and the second reinforcing plate is fixedly connected to a second cover plate or a third cover plate.

[0065] In this embodiment, the length of the first supporting beam 51 is the same as the length of the second supporting beam 52, and the length of the first supporting beam 51 is greater than the width of the inclined tower column segment 30. Therefore, during installation, the two inclined slides 60 have greater adjustable space within the length range of the two supporting beams 50, avoiding situations where the two inclined slides 60 cannot be installed.

[0066] Each inclined slide 60 is fixedly connected to the top surface of the corresponding support beam 50. The top surfaces of each inclined slide 60 are flush with each other, and the inclination angle of the plane formed by the top surfaces of the inclined slides 60 is the same as the inclination angle of the inclined tower column segment 30. During the hoisting process, the inclined tower column segment 30 can slide downward along the top surface of the inclined slide 60 until the bottom surface of the inclined tower column segment 30 is in contact with the top surface of the steel-concrete composite section 10.

[0067] In this embodiment, the inclined slide 60 is provided in two parts, namely the first inclined slide 61 and the second inclined slide 62. The first inclined slide 61 and the second inclined slide 62 are arranged in parallel and both the first inclined slide 61 and the second inclined slide 62 are fixedly connected to the first support beam 51 and the second support beam 52. The two inclined slides 60 and the two support beams 50 are arranged in a grid shape.

[0068] In this embodiment, a number of spaced buffer sliding blocks 70 are fixedly connected to the top surface of the two inclined slides 60 or the side surface of the inclined tower column segment 30 that cooperates with the inclined slides 60.

[0069] In this embodiment, the buffer sliding block 70 is made of MGE plate, and a fixing steel plate 31 is welded to the side of the inclined tower column segment 30 that mates with the inclined slide rail 60. The buffer sliding block 70 and the fixing steel plate 31 are fixed together by countersunk screws 71. To ensure the smooth sliding of the inclined tower column segment 30, the bottom surface height of the countersunk screw 71 must be higher than the bottom surface height of the buffer sliding block 70. Furthermore, as... Figure 5 and Figure 6 As shown, to ensure that the buffer sliding block 70 does not wobble, limiting plates 72 can be provided on both sides of the buffer sliding block 70. If necessary, the buffer sliding block 70 can also be provided on the top surface of the inclined slide 60, with the same buffering sliding effect.

[0070] Because the tilt angle of the plane formed by the top surfaces of the inclined slide 60 is the same as the tilt angle of the inclined tower column segment 30, and the tilt angle of the steel-concrete composite section 10 is the same as the tilt angle of the inclined tower column segment 30, the inclined tower column segment 30 can slide downwards along the top surface of the inclined slide 60 during hoisting until the bottom surface of the inclined tower column segment 30 is in contact with the top surface of the steel-concrete composite section 10. At this point, the tilt angle of the inclined tower column segment 30 is the preset angle. This support structure not only has a simple process and high installation efficiency, but also eliminates the need to temporarily adjust the tilt angle of the inclined tower column segment 30 during hoisting, greatly reducing the construction difficulty of installing the inclined tower column segment 30.

[0071] Meanwhile, since the tops of the three inclined support pipes all extend directly above the top surface of the steel-concrete composite section 10, and the inclination angles of the three inclined support pipes are the same as the inclination angle of the inclined tower column segment 30, each inclined support pipe, the bridge deck 20, and the side of the inclined tower column segment 30 form an equilateral triangle shape. In this configuration, the inclined support pipes exhibit the best stress distribution and stability, and can withstand greater axial forces. Therefore, this support structure has good stability and a high safety factor.

[0072] An installation method for a support structure used in the installation of bridge inclined tower segments, comprising:

[0073] Step 10: Calculate the installation position of the support bracket 40 based on the inclination angle and size of the inclined tower column segment 30, and lay out the lower end position of the inclined support pipe during the construction of the bridge deck 20, and then pre-embed the base steel plate 21 to form the embedded part.

[0074] At the same time, the pouring of the steel-concrete composite section 10 can be carried out: first, the prestressing tendons of the main beam of bridge deck 20 are tensioned; such as Figure 9 As shown, a rigid frame is established, the steel-concrete composite section is installed, the concrete reinforcement of the steel-concrete composite section is tied, and then the steel formwork for the 10-ton concrete section of the steel-concrete composite section is erected. Next, as... Figure 10 As shown, after the concrete for the steel-concrete composite section is poured and reaches its strength, the steel formwork is removed, thus completing the pouring of the steel-concrete composite section 10. At this point, as... Figure 11 As shown, a sealing plate 11 and a toothed plate 12 arranged perpendicularly to the sealing plate 11 can be set at the top of the steel-concrete composite section 10. At this time, the top surface of the sealing plate 11 is the top surface of the steel-concrete composite section 10.

[0075] Step 20: Set the inclined support pipes according to the preset inclination angle, and weld the bottom ends of the three inclined support pipes to the embedded parts for fixation;

[0076] Step 30: Weld the three sets of diagonal bracing rods 44 between the first inclined support tube 41 and the second inclined support tube 42, between the second inclined support tube 42 and the third inclined support tube 43, and between the third inclined support tube 43 and the first inclined support tube 41, so that the first diagonal bracing rod 441, the second diagonal bracing rod 442 and the third diagonal bracing rod 443 form a Z-shape.

[0077] Step 40: Measure the lengths of the first inclined support tube 41, the second inclined support tube 42, and the third inclined support tube 43, as well as the cutting angle at their top ends. Then, cut the top ends of the first inclined support tube 41, the second inclined support tube 42, and the third inclined support tube 43 into first inclined surfaces, second inclined surfaces, and third inclined surfaces with the same inclination angle as the inclined tower column segment 30, respectively. Then, weld the first cover plate 411, the second cover plate, and the third cover plate to the first inclined surfaces, the second inclined surfaces, and the third inclined surfaces, respectively.

[0078] Step 50: Weld the bottom end of the first support beam 51 to the first cover plate 411, and then weld the bottom end of the second support beam 52 to both the second cover plate and the third cover plate. At this time, the plane formed by the top surface of the first support beam 51 and the top surface of the second support beam 52 is arranged perpendicular to the top surface of the steel-concrete composite section 10.

[0079] Step 60: Weld the first inclined slide rail 61 and the second inclined slide rail 62 to the left and right sides of the first support beam 51 and the second support beam 52 respectively, and arrange the two inclined slide rails 60 and the two support beams 50 in a grid pattern. To facilitate the smooth sliding of the inclined tower column segment 30, buffer sliding blocks 70 can be installed on the side of the inclined tower column segment 30. This completes the installation of the support structure.

[0080] Subsequently, such as Figure 11 and Figure 12 As shown, the inclined tower column segment 30 is first hoisted above the supporting structure and the steel-concrete composite section 10. Then, the buffer sliding block 70 on the side of the inclined tower column segment 30 is placed against the inclined slide rail 60, allowing the inclined tower column segment 30 to slide downwards along the inclined slide rail 60 until the bottom surface of the inclined tower column segment 30 is in contact with the top surface of the steel-concrete composite section 10. Next, concrete is poured to fix the inclined tower column segment 30 to the steel-concrete composite section 10, thus completing the construction of the inclined tower column segment 30.

[0081] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A support structure for the installation of bridge inclined tower segments, applicable to bridge decks with pre-cast steel-concrete composite sections, wherein the inclination angle of the steel-concrete composite section is the same as the inclination angle of the inclined tower segment, and the top surface of the steel-concrete composite section is perpendicular to the central axis of the steel-concrete composite section, characterized in that: The support structure includes: The support frame includes three parallel and spaced inclined support tubes. The bottom ends of the three inclined support tubes are fixed to the bridge deck, and the top ends of the three inclined support tubes extend directly above the top surface of the steel-concrete composite section. The inclination angle of the three inclined support tubes is the same as the inclination angle of the inclined tower column segment. At least two support beams, each support beam is individually fixed to the top of one of the inclined support pipes or simultaneously fixed to the top of two inclined support pipes, and the top surfaces of each support beam are flush, and the inclination angle of the plane formed by the top surfaces of the support beams is the same as the inclination angle of the inclined tower column segment. At least two inclined slides, each of which is fixed to the top surface of the corresponding support beam. The top surfaces of each inclined slide are flush with each other, and the inclination angle of the plane formed by the top surfaces of the inclined slides is the same as the inclination angle of the inclined tower column segment. During the hoisting process, the inclined tower column segment can slide down along the top surface of the inclined slide until the bottom surface of the inclined tower column segment is in contact with the top surface of the steel-concrete composite section. The three inclined support tubes are the first inclined support tube, the second inclined support tube, and the third inclined support tube. The three inclined support tubes are arranged in an isosceles triangle on the bridge deck, and the second and third inclined support tubes are located on the same side. The support beams are provided in two parallel arrangement. The two support beams are the first support beam and the second support beam. The bottom end of the first support beam is fixedly connected to the top end of the first inclined support tube, and the bottom end of the second support beam is fixedly connected to both the second and third inclined support tubes. The inclined slide is provided with two inclined slides, namely the first inclined slide and the second inclined slide. The first inclined slide and the second inclined slide are arranged in parallel and are both fixedly connected to the first support beam and the second support beam. The two inclined slides and the two support beams are arranged in a grid pattern.

2. The support structure for the installation of bridge inclined tower segments according to claim 1, characterized in that: The support bracket also includes three sets of diagonal braces, which are respectively fixed between the first and second inclined support tubes, between the second and third inclined support tubes, and between the third inclined support tube and the first inclined support tube.

3. A support structure for the installation of bridge inclined tower segments according to claim 2, characterized in that: Each set of diagonal braces includes a first diagonal brace, a second diagonal brace, and a third diagonal brace. Both ends of the first diagonal brace, the second diagonal brace, and the third diagonal brace are respectively fixed to two inclined support tubes, and the first diagonal brace, the second diagonal brace, and the third diagonal brace are arranged in a Z-shape.

4. A support structure for the installation of bridge inclined tower segments according to claim 2, characterized in that: The top ends of the first, second, and third inclined support pipes are respectively cut into a first inclined surface, a second inclined surface, and a third inclined surface with the same inclination angle as the inclined tower column segment. A first cover plate, a second cover plate, and a third cover plate are respectively welded to the first, second, and third inclined surfaces. The bottom end of the first support beam is welded to the first cover plate, and the bottom end of the second support beam is welded to both the second and third cover plates.

5. A support structure for the installation of bridge inclined tower segments according to claim 4, characterized in that: The first supporting crossbeam includes a first crossbeam body formed by splicing two I-beams, and a first reinforcing plate is provided on both sides of the first crossbeam body, which is fixedly connected to a first cover plate; the second supporting crossbeam includes a second crossbeam body formed by splicing two I-beams, and a second reinforcing plate is provided on both sides of the second crossbeam body, which is fixedly connected to a second cover plate or a third cover plate.

6. A support structure for the installation of bridge inclined tower segments according to claim 5, characterized in that: The length of the first supporting beam is the same as the length of the second supporting beam, and the length of the first supporting beam is greater than the width of the inclined tower column segment.

7. A support structure for the installation of bridge inclined tower segments according to claim 4, characterized in that: Several spaced buffer sliding blocks are fixed to the top surface of the two inclined slides or the side of the inclined tower column segment that cooperates with the inclined slide.

8. A support structure for the installation of bridge inclined tower segments according to claim 7, characterized in that: The buffer sliding block is made of MGE plate. The side of the inclined tower column segment that matches the inclined slide is welded with a fixed steel plate. The buffer sliding block and the fixed steel plate are fixed with countersunk screws.

9. An installation method for a support structure used for the segmental installation of a bridge inclined tower column, comprising the support structure described in claim 8 for the segmental installation of a bridge inclined tower column, characterized in that: include: Step 10: Calculate the installation position of the support bracket based on the inclination angle and size of the inclined tower column segment, and lay out the lower end position of the inclined support pipe during bridge deck construction, and then pre-embed the base steel plate to form the embedded part. Step 20: Set the inclined support pipes according to the preset inclination angle, and weld the bottom ends of the three inclined support pipes to the embedded parts for fixation; Step 30: Weld the three sets of diagonal braces between the first and second inclined support tubes, between the second and third inclined support tubes, and between the third and first inclined support tubes, respectively. Step 40: Measure the lengths of the first inclined support pipe, the second inclined support pipe, and the third inclined support pipe, as well as the cutting angle at the top. Then, cut the tops of the first inclined support pipe, the second inclined support pipe, and the third inclined support pipe into first inclined surfaces, second inclined surfaces, and third inclined surfaces with the same inclination angle as the inclined tower column segment, respectively. Then, weld the first cover plate, the second cover plate, and the third cover plate to the first inclined surfaces, the second inclined surfaces, and the third inclined surfaces, respectively. Step 50: Weld the bottom end of the first support beam to the first cover plate, and then weld the bottom end of the second support beam to both the second and third cover plates. At this time, the plane formed by the top surface of the first and second support beams is arranged perpendicular to the top surface of the steel-concrete composite section. Step 60: Weld the first inclined slide and the second inclined slide to the left and right sides of the first support beam and the second support beam respectively, and the two inclined slides and the two support beams are arranged in a grid shape.

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