Adjustable assembled steel anchor beam support and construction method

Abstract

The adjustable assembled steel anchor beam support and construction method, the main part of the adjustable assembled steel anchor beam support is a standard bar, connected by high-strength bolts, and the machining work of the assembled horizontal standard frame (1), the lengthening steel (5) and the adjusting vertical rod (2) is carried out in the machining factory, the lengthening steel (5) and the adjusting vertical rod (2) are used in combination according to the actual situation, and the turnover use of the overall structure is realized. The adjustable assembled steel anchor beam support and construction method realizes the overall assembly of the support, ensures the machining precision and assembly accuracy of the component, adopts bolt connection instead of welding process, is convenient to install and remove under the construction condition that the space of the tower is limited, is safe in construction, greatly improves the work efficiency on site, and realizes the multiple turnover use of the component, and reduces the material consumption.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to an adjustable prefabricated steel anchor beam support and its construction method. Background Technology

[0002] With the development of society and economy and the progress of science and technology, bridge engineering is increasingly moving towards deeper water and longer spans, resulting in a growing number of extra-large bridge projects. To increase bridge spans, reduce the impact on major waterways, and enhance the overall aesthetics of bridges, cable-stayed bridges have begun to be widely used as the main bridge type in China. As a cable-stayed bridge system composed of towers, cables, and beams, it has a greater spanning capacity than beam bridges and is the main type of long-span bridge.

[0003] To realize the long-span design concept of cable-stayed bridges, multiple sets of stay cables are designed, and precast steel anchor beams are installed inside the towers. Installation requires scaffolding for structural fixation before the tower columns are poured with concrete. Due to the confined space inside the towers, existing technologies suffer from difficulties in installing and dismantling conventional scaffolding, low scaffolding structure turnover rate, and high on-site steel anchor beam installation risks, difficulties, high material costs, and challenges in controlling accuracy and quality. Therefore, there is an urgent need for a steel anchor beam scaffolding and construction method that can effectively ensure the installation accuracy and efficiency of steel anchor beams while significantly reducing material consumption. Summary of the Invention

[0004] This invention proposes an adjustable prefabricated steel anchor beam support and construction method, which is particularly suitable for cable tower design structures that use prefabricated steel anchor beams to fix stay cables. It can effectively ensure the installation accuracy and efficiency of steel anchor beams and greatly reduce material consumption.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] An adjustable prefabricated steel anchor beam support includes:

[0007] A leveling device is installed on the inner concrete surface of the tower column;

[0008] Adjustable uprights are installed between two layers of prefabricated horizontal standard frames. Their length is determined according to the height adjustment required for the current segment. The entire structure is bolted together and fixed by passing through bolt holes evenly distributed on the prefabricated horizontal standard frames.

[0009] A prefabricated horizontal standard frame is set inside the leveling device and fixedly bolted to the leveling device. The leveling device can level the prefabricated horizontal standard frame. The prefabricated horizontal standard frame forms a frame structure by adjusting the uprights.

[0010] The lengthening steel is arranged between the leveling device and the assembled horizontal standard frame, and both sides of the lengthening steel are fixed by bolts.

[0011] The pre-buried structure is arranged in the inside concrete of the cable tower column, and is used for fixing the whole adjustable assembled steel anchor beam support.

[0012] The assembled horizontal standard frame is processed into a bolt-connected assembled standard component.

[0013] The leveling device is connected and fixed by bolts.

[0014] The construction method of the adjustable assembled steel anchor beam support comprises the following steps.

[0015] S1, the adjustable assembled steel anchor beam support is divided into four parts, each part is constructed according to different construction stages, and is assembled at the installation position on site to form a whole;

[0016] S2, when the cable tower column is constructed, the climbing cone is pre-buried according to the design position before the concrete pouring operation, and is used for bolt connection and fixation of the whole steel anchor beam support in the inside of the cable tower column.

[0017] S3, after the inside formwork of the tower column is removed, the support leveling device is installed in time, and the structure is fixed on the tower column by bolt connection.

[0018] S4, the adjustable assembled steel anchor beam support is a standard bar, and is connected by high-strength bolts, and the assembled horizontal standard frame, the lengthening steel and the adjusting vertical rod are processed in the processing factory, a small jack is erected on the top assembled horizontal standard frame, and the vertical fine adjustment of the steel anchor beam is performed.

[0019] S5, when the cable tower column is constructed, the pre-buried climbing cone is pre-buried according to the design position, when the nth segment is constructed, the components except the force-bearing assembled horizontal standard frame are removed, the pre-buried structure of the nth segment is constructed at the same time as the steel anchor beam, wherein n is a positive integer, and n is greater than or equal to 2.

[0020] The step S1 further comprises the following steps.

[0021] S11, each part of the adjustable assembled steel anchor beam support can be processed in advance, the component size and the corresponding bolt hole position are accurately processed in the factory, and trial assembly is performed, so that the components can be smoothly assembled after being transported to the site. According to the site condition, the connecting steel plate is processed according to the actual angle, so that the connected assembled horizontal standard frame can be kept parallel during installation.

[0022] The step S3 further comprises the following steps.

[0023] S31, after the tower template is removed, the angle of the concrete surface at the pre-buried climbing cone position is measured, whether the angle is consistent with the design is checked, after the angle is corrected, the pre-buried climbing cone is fixed in place in time by using bolts.

[0024] The step S4 further comprises the following steps:

[0025] S41, each assembled steel anchor beam support system is connected by bolts, the height of the vertical rod is adjusted according to the height of the steel anchor beam on site, the height of the jack is considered in the process, the assembled horizontal standard frame is directly used after being assembled, when the length of the horizontal joint is insufficient, the lengthening steel is added to supplement.

[0026] The step S5 further comprises the following steps:

[0027] S51, in the step S5, when the n-th section steel anchor beam of the cable tower is constructed, the components except the force-bearing assembled horizontal standard frame in the n-1 section are removed, the force-bearing assembled horizontal standard frame is reserved, and is connected with the n-1 section leveling device as the main support structure, the removed components are transferred to the n-th section, and the vertical rod is replaced correspondingly. And before the tower column concrete is poured, the installation and positioning of the n-th pre-buried climbing cone and the steel anchor beam are completed.

[0028] The assembled horizontal standard frame is used in rotation.

[0029] The vertical rod is selected according to the different height of each layer of steel anchor beam, and the vertical rod with a corresponding length is selected, so that the height distance between the top surface of the steel anchor beam support main structure and the bottom of the steel anchor beam is controlled within 20cm-30cm.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] (1) In the present application, the whole support is realized to be assembled, the machining and pre-assembly of each component are carried out in the factory, the machining precision and assembly accuracy of the components are ensured, and the construction quality during installation on site is ensured.

[0032] (2) In the present application, each main component is connected by bolts, which is convenient for installation and removal under the construction condition that the space in the tower is limited, greatly improves the work efficiency on site, avoids welding operation in a narrow space, reduces the construction risk on site, and ensures the safety of the workers.

[0033] (3) In the present application, the adjustable steel anchor beam support structure is designed to be assembled, bolt connection is adopted instead of welding process, cutting of the structure during removal operation is avoided, the components are used in rotation, the material consumption is reduced, and the material type is strictly controlled during the structural design, the self-weight of the whole structure is reduced, and the hoisting condition on site is matched. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1Main flow chart of the embodiment of the present application;

[0035] Figure 2 Transverse schematic view of the steel anchor beam support of the embodiment of the present application;

[0036] Figure 3 Longitudinal schematic view of the steel anchor beam support of the embodiment of the present application;

[0037] Figure 4 Detailed view of the steel anchor beam construction section of the embodiment of the present application;

[0038] Figure 5 Plan view of the assembled horizontal standard frame of the embodiment of the present application;

[0039] Figure 6 Longitudinal and transverse sectional view of the assembled horizontal standard frame of the embodiment of the present application;

[0040] Figure 7 Detailed view of the connecting steel plate I, stiffening plate I and connecting steel plate II of the embodiment of the present application;

[0041] Figure 8 Schematic view of the adjusting vertical rod standard structure of the embodiment of the present application;

[0042] Figure 9 Detailed view of the stiffening plate II, stiffening plate III and connecting steel plate III of the embodiment of the present application;

[0043] Figure 10 Detailed view of the lengthened steel structure of the embodiment of the present application;

[0044] Figure 11 Schematic view of the leveling device of the embodiment of the present application;

[0045] Figure 12 Detailed view of the connecting steel plate II and climbing cone connecting steel plate of the embodiment of the present application;

[0046] Figure 13 Pre-buried structure of the embodiment of the present application;

[0047] Figure 14 Single-layer three-dimensional view of the steel anchor beam support of the embodiment of the present application.

[0048] Explanation of reference signs

[0049] 1 assembled horizontal standard frame; 1-1 steel I; 1-2 connecting steel plate I; 1-3 steel pipe I; 1-4 connecting steel plate II; 1-5 stiffening plate I;

[0050] 2 adjusting vertical rod; 2-1 connecting steel plate III; 2-2 stiffening plate II; 2-3 stiffening plate III; 2-4 steel pipe II;

[0051] 3 leveling device; 3-1 adjusting steel plate;

[0052] 4 embedded structure; 4-1 tapered connection steel plate; 4-2 embedded tapered cone; 4-3 high-strength screw rod; 4-4 cast embedded plate; 4-5 force bolt;

[0053] 5 extension steel; 5-1 steel II;

[0054] 6 small jack. DETAILED DESCRIPTION

[0055] The specific embodiments will be described below with reference to the accompanying drawings Figures 1-14 The present application will be described in detail, and the technical solutions in the examples of the present application will be clearly and completely described. Obviously, the described examples are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0056] The present application provides an adjustable assembly type steel anchor beam support and construction method; realizes overall assembly of the support, ensures component machining precision and assembly accuracy; and adopts bolting instead of welding process, which is convenient for installation and removal under the construction condition of limited space in the tower, is safe in construction, greatly improves the site work efficiency; and realizes multiple turnover use of components, reduces material consumption.

[0057] As shown in the drawings, an adjustable assembly type steel anchor beam support comprises: Figures 1-14

[0058] The leveling device 3 is arranged on the inner side concrete surface of the cable tower column;

[0059] The adjusting vertical rod 2 is arranged between the two layers of assembly type horizontal standard frames 1, the length of which is determined according to the current segment height to be adjusted, and the whole adopts a bolting form, which is bolted and fixed through the uniformly distributed bolt holes of the assembly type horizontal standard frame 1;

[0060] The assembly type horizontal standard frame 1 is arranged on the inner side of the leveling device 3 and is fixedly bolted with the leveling device 3, and the assembly type horizontal standard frame 1 can be leveled by the leveling device 3, and the assembly type horizontal standard frame 1 forms a frame structure through the adjusting vertical rod;

[0061] The extension steel 5 is arranged between the leveling device 3 and the assembly type horizontal standard frame 1, and the extension steel 5 is fixed by bolts on both sides;

[0062] The embedded structure 4 is arranged in the inner side concrete of the cable tower column, and fixes the overall adjustable assembly type steel anchor beam support. ​

[0063] The assembled horizontal standard frame 1 is processed as a bolted assembled standard component.

[0064] The leveling device 3 is connected and fixed by bolts.

[0065] As shown in Figure 11 and Figure 12 , the support leveling device 3 of the frame body is processed by measuring the angle of the concrete surface at the position of the embedded climbing cone 4-2, checking whether the angle is consistent with the design, correcting the adjusting steel plate 3-1, and then installing and fixing the embedded climbing cone 4-2 after processing.

[0066] As shown in Figure 5 , Figure 6 and Figure 10 , the assembled horizontal standard frame 1 and the lengthened steel 5 structure are both standard bars, which are assembled in the processing plant and connected by high-strength bolts 4-3, cast embedded plates 4-4, and force bolts 4-5. The assembled horizontal standard frame 1 is used for rotation, and the lengthened steel 5 is used as a horizontal standard frame lengthening accessory according to the actual situation on site.

[0067] As shown in Figure 8 , the standard component structure of the vertical rod 2 is also processed in the processing plant, and is connected to the horizontal standard frame 1 by bolts. The vertical rod 2 is selected according to the different heights of each layer of steel anchor beam, and a small jack 6 is used to stand on the top assembled horizontal standard frame 1 to perform vertical fine adjustment of the steel anchor beam.

[0068] As shown in Figure 13 , the embedded structure 4 is precisely positioned and fixed during the pouring of the tower column, and the leveling device 3 is installed in time after the formwork is removed.

[0069] As shown in Figures 2 to 4 and Figure 14 , the entire adjustable assembled steel anchor beam support is connected by a large number of bolts, and holes are evenly distributed on the main frame to adjust the size of the frame body and the position of the vertical rod. The overall structure is used for rotation. When the n-th section of the cable tower steel anchor beam is constructed, the components except the force assembled horizontal standard frame are removed from the n-1 section, the force assembled horizontal standard frame is retained, and the n-1 section leveling device is connected. The removed components are rotated to the n-th section, the vertical rod is replaced accordingly, and the installation of the n-th section steel anchor beam support is completed. The main components of the support are rotated, which greatly saves material costs. Wherein, n is a positive integer, n≥2.

[0070] As shown in Figure 1As shown, a construction method of an adjustable assembled steel anchor beam support, comprising the following steps:

[0071] S1, the adjustable assembled steel anchor beam support is divided into four parts, each part is constructed according to different construction stages, and is assembled to form a whole at the installation position on site;

[0072] S2, when the cable tower column is constructed, the climbing cone 4-2 is pre-buried at the designed position before the concrete pouring operation, and is used for bolt connection and fixation of the whole steel anchor beam support in the cable tower column in the later stage;

[0073] S3, after the inside formwork of the tower column is removed, the leveling device 3 of the support is installed in time, and the structure is fixed on the tower column by bolt connection;

[0074] S4, the adjustable assembled steel anchor beam support is a standard bar, which is connected by high-strength bolts, and the working operation of the assembled horizontal standard frame 1, the lengthening steel 5 and the adjusting vertical rod 2 is carried out in the processing factory, the small jack 6 is erected on the top assembled horizontal standard frame, and the vertical fine adjustment operation of the steel anchor beam is carried out;

[0075] S5, the climbing cone 4-2 is pre-buried according to the designed position when the cable tower column is constructed, the components except the force assembled horizontal standard frame are removed when the nth segment is constructed, the pre-buried structure 4 of the nth segment is constructed at the same time as the steel anchor beam, n is a positive integer, and n≥2.

[0076] The step S1 further comprises the following steps:

[0077] S11, each part of the adjustable assembled steel anchor beam support can be processed in advance, the size of the component and the corresponding bolt hole position are accurately processed in the factory, and trial assembly is carried out, so that the components can be smoothly assembled after being transported to the site. According to the site conditions, the connecting steel plate I1-2, the connecting steel plate II1-4 and the connecting steel plate III2-1 are processed according to the actual angle, so that the connected assembled horizontal standard frame 1 can be installed in parallel.

[0078] The step S3 further comprises the following steps:

[0079] S31, after the tower column formwork is removed, the angle of the concrete surface at the pre-buried climbing cone 4-2 position is measured, whether the angle is consistent with the design is checked, and after the angle is corrected, the bolt is used for installation and fixation in time.

[0080] The step S4 further comprises the following steps:

[0081] S41, each assembled steel anchor beam support system is connected by bolts, the height of the adjusting vertical rod 2 is matched according to the height of the steel anchor beam on site, the height occupied by the jack is considered in the process, the assembled horizontal standard frame 1 is directly used after the assembly is completed, and the lengthening steel is added to supplement when the horizontal splicing length is insufficient.

[0082] The step S5 further comprises the following steps:

[0083] S51, in the step S5, when the construction is performed on the steel anchor beam of the n-th section of the tower, the components except the force assembly type horizontal standard frame in the n-1 section are removed, the force assembly type horizontal standard frame is reserved, and is connected with the n-1 section leveling device to serve as the main support structure, the removed components are transferred to the n-th section, the corresponding replacement is performed on the vertical rod, and the installation and positioning of the pre-buried climbing cone and the steel anchor beam of the n-th section are completed before the tower column concrete pouring.

[0084] The force assembly type horizontal standard frame 1 is transferred and used.

[0085] The vertical rod is selected according to the different height of the steel anchor beam of each layer, the corresponding length of the vertical rod 2 is adjusted, and the height distance between the top surface of the main body structure of the steel anchor beam support and the bottom of the steel anchor beam is controlled within 20cm-30cm.

[0086] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable fabricated steel anchorage beam support, characterized by, The utility model relates to a kind of adjustable assembly type steel anchor beam support, including: Leveling device (3), the leveling device (3) is arranged in the concrete surface inside cable tower column; Adjusting vertical rod (2), the adjusting vertical rod (2) is arranged between two layers of assembly type horizontal standard frame (1), its length is determined according to the height of current section needing to be adjusted, overall adopts bolted form, and it is bolted and fixed by passing through the bolt hole of assembly type horizontal standard frame (1) on uniform distribution; Assembly type horizontal standard frame (1) is fixed and bolted with leveling device (3) and is arranged in the inside of leveling device (3), and assembly type horizontal standard frame (1) can be leveled by leveling device (3), and the frame structure is formed by adjusting vertical rod (2); Lengthening profile steel (5) is arranged between the leveling device (3) and the assembly type horizontal standard frame (1) in the segment needing to be horizontally lengthened, and the lengthening profile steel (5) is fixed by bolt on both sides; Pre-buried structure (4) is arranged in the inside of concrete inside cable tower column, and it is fixed to the overall adjustable assembly type steel anchor beam support.

2. An adjustable fabricated steel girder bracket as claimed in claim 1, wherein: Assembly type horizontal standard frame (1) is processed into bolted assembly type standard component.

3. An adjustable fabricated steel girder bracket as defined in claim 1, wherein: Leveling device (3) is connected and fixed by bolt.

4. The method of constructing an adjustable fabricated steel anchorage beam support according to claim 1, wherein, The utility model relates to a kind of adjustable assembly type steel anchor beam support, including: S1, adjustable assembly type steel anchor beam support (1) is divided into four parts, each part is operated according to different construction stages, and is assembled to form a whole at the installation position on site; S2, when cable tower column is constructed, pre-buried climbing cone (4-2) is pre-buried according to design position before concrete pouring operation, to be used for the overall bolted fixing of steel anchor beam support in the inside of cable tower column in later period; S3, after the formwork inside tower column is removed, support leveling device (3) is promptly installed, and the structure is fixed on the tower column by bolt connection; S4, adjustable assembly type steel anchor beam support is standard rod, connected by high-strength bolt, and the processing operation of assembly type horizontal standard frame (1), lengthening profile steel (5) and adjusting vertical rod (2) is carried out in processing factory, small jack (6) is erected on top assembly type horizontal standard frame (1), and vertical fine adjustment operation of steel anchor beam is carried out; S5, pre-buried pre-buried climbing cone (4-2) is pre-buried according to design position when cable tower column is constructed, when the nth section is constructed, the components except force assembly type horizontal standard frame of n-1 section are removed, and the pre-buried structure (4) of the nth section is constructed simultaneously with steel anchor beam, and n is positive integer, and n is greater than or equal to 2.

5. The method of claim 4, wherein the adjustable assembly steel girder bracket is installed by the steps of: The step S1 further includes the following steps: S11, each part of adjustable assembly type steel anchor beam support can be processed in advance, and the size of component and corresponding bolt hole position are accurately processed in factory, and trial assembly is carried out, to ensure that it can be smoothly assembled after being transported to site;And according to the situation on site, connecting steel plate is processed according to actual angle, to ensure that the connected assembly type horizontal standard frame (1) is kept parallel when being installed.

6. The method of erecting an adjustable pre-fabricated steel anchorage beam support of claim 4, wherein, The step S3 further includes the following steps: S31, after the formwork of tower column is removed, the angle of the concrete surface of pre-buried climbing cone (4-2) position is measured, whether the angle is consistent with the design is checked, and after being corrected, it is promptly installed and fixed by bolt.

7. The method of erecting an adjustable pre-fabricated steel anchorage beam support of claim 4, wherein, The step S4 further comprises the following steps: S41, each section of the assembled steel anchor beam support system is connected by bolts, the height of the vertical rod (2) is adjusted according to the height of the steel anchor beam on site, the height occupied by the jack is considered in the process, the assembled horizontal standard frame is directly used after being assembled, and when the length of the horizontal assembly is insufficient, the lengthening steel is added for supplement.

8. The method of erecting an adjustable pre-fabricated steel anchorage beam support of claim 4, wherein, The step S5 further comprises the following steps: S51, in the step S5, when the construction of the n-th section of the steel anchor beam of the cable tower is performed, the components except the force-bearing assembled horizontal standard frame in the n-1 sections are removed, the force-bearing assembled horizontal standard frame (1) is reserved, and is connected with the n-1 section leveling device (3) as the main support structure, the removed components are transferred to the n-th section, the vertical rod (2) is replaced correspondingly, and the installation and positioning of the n-th section pre-buried climbing cone (4-2) and the steel anchor beam are completed before the pouring of the tower column concrete.

9. The method of erecting an adjustable assembly steel anchorage beam support of claim 4, wherein, The assembled horizontal standard frame is used in rotation.

10. The method of erecting an adjustable pre-fabricated steel anchorage beam support of claim 4, wherein, The vertical rod (2) is selected according to the different heights of each layer of the steel anchor beam, the corresponding length of the vertical rod (2) is selected, and the height distance between the top surface of the main structure of the steel anchor beam support and the bottom of the steel anchor beam is controlled within 20cm-30cm.

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