Construction Method and System for Block Reinforcement Components with Horizontal Matching of Closed Stirrups and Main Reinforcement

Abstract

This invention provides a construction method and system for horizontally matching segmented steel reinforcement components with closed stirrups and main reinforcement bars. The method includes: S1, using the horizontally positioned segmented steel reinforcement component of the nth segment on a second formwork as the matching steel reinforcement component, fabricating the segmented steel reinforcement component of the (n+1)th segment on a first formwork; S2, fixing the segmented steel reinforcement component on the second formwork to the (n-1)th segment of the bridge tower; S3, closing the multiple segmented steel reinforcement components of the nth segment together; S4, installing loosely tied steel reinforcement bars at the connection between the main reinforcement bars of the nth segment and the (n-1)th segment; S5, using the segmented steel reinforcement component of the (n+1)th segment on the first formwork as the matching steel reinforcement component, fabricating the segmented steel reinforcement component of the (n+2)th segment on the second formwork, and fixing the segmented steel reinforcement component of the (n+1)th segment to the nth segment; repeating the above steps to complete the fabrication and installation of each segment of steel reinforcement components. This invention solves the problem of steel reinforcement construction for bridge towers with tapering cross-sections and where steel reinforcement cannot be welded.

Description

Technical Field

[0001] This invention relates to the field of steel reinforcement component construction technology, specifically to a method and system for constructing segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement. Background Technology

[0002] With the advancement of bridge construction technology, bridge spans are becoming increasingly larger, requiring higher bridge towers and more complex steel reinforcement structures, which presents new challenges for the construction of bridge tower steel cages.

[0003] Currently, the technology for the overall hoisting of steel reinforcement components for bridge towers and columns is becoming increasingly mature. Generally, steel reinforcement components are assembled and welded together within a jig at the base of the tower to form complete sections. These sections are then hoisted onto the tower and connected to the main reinforcement bars via a compression-locking conical sleeve, enabling rapid installation. However, in scenarios where welding is impossible, such as when using epoxy-coated steel reinforcement or in locations where welding is explicitly prohibited by design, the overall strength of the steel reinforcement components cannot be guaranteed. Furthermore, some bridge towers use closed stirrups to improve seismic resistance, making conventional steel reinforcement component assembly methods unsuitable. Additionally, hoisting steel reinforcement components as a whole requires more powerful lifting equipment, resulting in significant investment. Therefore, to address these issues, a non-welded, horizontally matched closed stirrup segmented steel reinforcement component construction method has been invented, enabling rapid installation of steel reinforcement components. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a method and system for constructing segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement. By horizontally matching and assembling the segmented steel reinforcement components on a support frame under the tower, and then hoisting them to the top of the bridge tower to connect with the previous segment, this invention solves the problems of bridge tower reinforcement construction in situations where the bridge tower has a tapered cross-section, the reinforcement cannot be welded, the tower crane has limited performance, and the reinforcement is connected using straight threaded sleeves. This invention can also be extended to the reinforcement construction of pier and beam structures.

[0005] To address the aforementioned technical problems, this invention provides, on the one hand, a construction method for segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement bars, comprising: S1. Using the segmented steel reinforcement component of the nth section lying on the second jig as the matching steel reinforcement component, the segmented steel reinforcement component of the (n+1)th section is manufactured on the first jig. S2. Hoist the segmented steel reinforcement components of the nth section on the second frame to the top of the bridge tower and fix them to the (n-1)th section. S3. Connect the multiple sub-sections of the nth segment with closure stirrups at the closure joints and install the closure main reinforcement. S4. Install loosely tied reinforcing bars at the connection between the main reinforcement bars of the nth segment and the main reinforcement bars of the (n-1)th segment. S5. Using the (n+1)th segment of the reinforcing steel bar on the first jig as the matching reinforcing steel bar, fabricate the (n+2)th segment of the reinforcing steel bar on the second jig, and fix the (n+1)th segment of the reinforcing steel bar to the nth segment; repeat the above steps to complete the fabrication and installation of each segment of the reinforcing steel bar.

[0006] In some embodiments, step S2 includes: The segmented steel reinforcement components of the nth section are hoisted to the top of the bridge tower; Connect the segmented steel reinforcement component of the nth segment to the (n-1)th segment of the bridge tower; Install a jack at the bottom of the skeleton of the segmented steel reinforcement component in the nth segment. The lower end of the jack supports the skeleton of the (n-1)th segment. Connect a windproof cable to the segmented steel reinforcement component in the nth segment. Use the jack and the windproof cable to adjust the posture of the segmented steel reinforcement component in the nth segment so that the skeleton of the nth segment is aligned with the skeleton of the (n-1)th segment. Fix the skeleton of the nth segment to the skeleton of the (n-1)th segment. The main reinforcement of segment n is fixedly connected to the main reinforcement of segment n-1.

[0007] In some embodiments, step S3 includes: Place a closure stirrup between two adjacent segmented steel reinforcement components and connect the closure stirrup to the stirrup of the segmented steel reinforcement component; Insert the main reinforcement bar into the closure stirrup and fix the main reinforcement bar to the main reinforcement bar of the (n-1)th segment; Place points on the skeleton to determine the outer outline of the reinforcing bars, and adjust the position of the closing stirrups; The closure stirrups and closure main bars are fixedly connected.

[0008] In some embodiments, the method of inserting closure main reinforcement bars into the closure stirrups includes: Insert the main reinforcing bars from top to bottom, first inserting the innermost bars and then the outermost bars.

[0009] In some embodiments, step S4 includes: Before the main reinforcement of segment n is connected to the main reinforcement of segment n-1, multiple loosely tied stirrups are placed on the main reinforcement of segment n-1. Multiple loosely tied stirrups are sequentially lifted to the installation position and fixedly connected to the main reinforcement of the nth segment and the main reinforcement of the (n-1)th segment. Install the pull hooks and secure them.

[0010] In some embodiments, when the reinforcing steel component is manufactured in two parts, step S1 includes: S11. Based on the cross-sectional dimensions and structure of the segmented steel reinforcement components to be installed, adjust the dimensions of the comb rod. On the first jig, install the corner stirrups, bottom stirrups, and bottom outer cavity main reinforcement in sequence using the comb rod as a limiting element. Connect the bottom outer cavity main reinforcement to the main reinforcement on the second jig. Install the bottom skeleton inside the bottom stirrups, with the bottom skeleton resting on the bottom outer cavity main reinforcement. Install the bottom inner cavity main reinforcement on the bottom skeleton, with the bottom inner cavity main reinforcement resting on the bottom skeleton. Connect the bottom inner cavity main reinforcement to the main reinforcement on the second jig. Install the tie bar, and tie and fix the tie bar, bottom skeleton, bottom outer cavity main reinforcement, bottom inner cavity main reinforcement, corner stirrups, and bottom stirrups. S12. Install lateral stirrups and lateral outer cavity main reinforcement bars sequentially on the artificial platforms on both sides of the first jig, and match and connect the lateral outer cavity main reinforcement bars with the main reinforcement bars on the second jig; install lateral skeleton inside the lateral stirrups; install lateral inner cavity main reinforcement bars on the lateral skeleton, and match and connect the lateral inner cavity main reinforcement bars with the main reinforcement bars on the second jig; install tie bars, and tie and fix the tie bars, lateral skeleton, lateral outer cavity main reinforcement bars, lateral inner cavity main reinforcement bars, and lateral stirrups; complete the fabrication of a segment of steel reinforcement component for the n+1th segment; S13. Disconnect and separate the main ribs on the first jig from the main ribs on the second jig, and remove the bottom inner cavity main rib comb rods and the side inner cavity main rib comb rods on the first jig.

[0011] S14. Repeat steps S11 to S13 to produce the other segmented steel reinforcement components for the (n+1)th segment.

[0012] Further, step S11 includes: Corner stirrups are placed on the bottom stirrup comb rod of the first jig frame. The corner stirrups are positioned and limited by the bottom stirrup comb rod of the first jig frame and the lateral stirrup comb rod of the artificial platform. Bottom stirrups are placed on the bottom stirrup comb rod of the first jig frame, and the bottom stirrups and corner stirrups are tied and fixed. Install the bottom outer cavity main rib on the comb bar of the bottom outer cavity main rib of the first frame, and match and connect the bottom outer cavity main rib with the corresponding main rib on the second frame; Place the bottom skeleton inside the bottom stirrups, and tie and fix the bottom skeleton to the main reinforcement of the bottom outer cavity; Install the bottom inner cavity main reinforcement comb rod on the bottom frame, place the bottom inner cavity main reinforcement on the bottom inner cavity main reinforcement comb rod, match and connect the bottom inner cavity main reinforcement with the corresponding main reinforcement on the second frame, remove the bottom inner cavity main reinforcement comb rod, install the hook reinforcement, and tie and fix the hook reinforcement, bottom frame, bottom outer cavity main reinforcement, bottom inner cavity main reinforcement, corner hoop reinforcement and bottom hoop reinforcement.

[0013] Further, step S12 includes: Install lateral stirrups on the lateral stirrup comb rods on the artificial platforms on both sides of the first jig frame, and tie and fix the lateral stirrups with the corner stirrups and bottom stirrups; Place the lateral outer cavity main rib on the comb bar of the lateral outer cavity main rib on the artificial platform, and match and connect the lateral outer cavity main rib with the corresponding main rib on the second frame. Place a lateral skeleton inside the lateral stirrups, and tie and fix the lateral skeleton to the main reinforcement of the lateral outer cavity; Install the lateral inner cavity main reinforcement comb rod on the lateral frame, place the lateral inner cavity main reinforcement on the lateral inner cavity main reinforcement comb rod, connect the lateral inner cavity main reinforcement to the corresponding main reinforcement on the second frame, remove the lateral inner cavity main reinforcement comb rod, install the tie bar, and tie and fix the tie bar, lateral frame, lateral outer cavity main reinforcement and lateral inner cavity main reinforcement, corner stirrup and lateral stirrup.

[0014] Furthermore, the main reinforcement bars of adjacent segments are connected by matching straight threaded sleeves.

[0015] On the other hand, the present invention provides a system for implementing the construction method of block steel reinforcement components with horizontal matching of closed stirrup main reinforcement, including a first frame and a second frame. Both sides of the first frame and the second frame are provided with manual platforms. The first frame, the second frame and the manual platforms are all arranged on a track by walking wheels. The first frame and the second frame are provided with bottom stirrup comb rods and bottom outer cavity main reinforcement comb rods. The bottom stirrup comb rods and the bottom outer cavity main reinforcement comb rods are arranged vertically. The bottom stirrup comb rods and the bottom outer cavity main reinforcement comb rods are respectively provided with multiple bottom stirrup limiting grooves and multiple bottom outer cavity main reinforcement limiting grooves. The artificial platform is provided with lateral stirrup comb rods and lateral outer cavity main reinforcement comb rods on the side near the first or second jig. The lateral stirrup comb rods and lateral outer cavity main reinforcement comb rods are arranged vertically, and multiple lateral stirrup limiting grooves and multiple lateral outer cavity main reinforcement limiting grooves are respectively provided on the lateral stirrup comb rods and lateral outer cavity main reinforcement comb rods. The first jig and the second jig take turns serving as a matching jig and a manufacturing jig. The matching jig is used to place the steel reinforcement components of the current segment, and the manufacturing jig is used to manufacture the steel reinforcement components of the next segment based on the steel reinforcement components on the matching jig.

[0016] The beneficial effects of this invention are as follows: 1. This invention solves the problems of bridge tower reinforcement construction in situations where the bridge tower has a tapered cross-section, the reinforcement cannot be welded, the tower crane has limited performance, and the reinforcement is connected by straight threaded sleeves. This invention can also be extended to the reinforcement construction of pier and beam structures.

[0017] 2. When the segmented steel reinforcement component of the present invention is connected to the previous segment, the posture of the segmented steel reinforcement component is first adjusted by jacks and windproof cables so that the skeleton of the segmented steel reinforcement component is aligned with the skeleton of the previous segment. After the skeleton of the segmented steel reinforcement component is fixedly connected to the skeleton of the previous segment, the main reinforcement of the segmented steel reinforcement component can be fixedly connected to the main reinforcement of the previous segment, ensuring the connection accuracy of the main reinforcement and high construction efficiency.

[0018] 3. In this invention, the closure stirrup is first connected to the stirrups of the two adjacent sub-sections of the steel reinforcement components, and then the closure main reinforcement is inserted into the closure stirrup. After the closure main reinforcement is fixedly connected to the main reinforcement of the previous segment, the position of the closure stirrup is adjusted to ensure the installation accuracy of the steel reinforcement at the closure point of the two adjacent sub-sections of the steel reinforcement components.

[0019] 4. In this invention, when inserting the main reinforcing bar into the closure stirrup, the inner main reinforcing bar is inserted first, and then the outer main reinforcing bar is inserted, which facilitates the tightening of the straight threaded sleeve.

[0020] 5. This invention allows for easy installation by pre-attaching loosely bound stirrups onto the main reinforcement bars of the previous segment. Once the main reinforcement bars of the current segment are connected to the main reinforcement bars of the previous segment, the loosely bound stirrups can be directly lifted to the installation position for binding and fixing.

[0021] 6. The present invention divides the steel reinforcement component into two sub-section steel reinforcement components. The joint of the two sub-section steel reinforcement components is the two sides of the steel reinforcement component. The corner stirrups, bottom stirrups, and bottom main reinforcement are installed first using the fabrication jig. The lateral stirrups and lateral main reinforcement are installed using the artificial platforms on both sides of the fabrication jig. The positioning and installation of all steel reinforcements can be completed.

[0022] 7. This invention limits the installation of stirrups and outer cavity main reinforcement by installing comb rods on the fabrication jig and artificial platform. Furthermore, by installing comb rods on the skeleton within the stirrups, the bottom inner cavity main reinforcement and lateral inner cavity main reinforcement are positioned and installed, ensuring installation accuracy and high efficiency. In addition, each installed main reinforcement needs to be matched and connected with the main reinforcement on the matching jig, which also ensures the installation accuracy of the skeleton.

[0023] 8. In this invention, both the fabrication jig and the manual platform are set on a track, which facilitates the separation of the fabrication jig and the matching jig; by setting a straight threaded sleeve on the main rib of the matching jig, it is easy to match and connect and separate the main rib of the fabrication jig with the main rib of the matching jig. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the segmentation of the reinforcing steel components of the present invention; Figure 2 This is a front view of the first jig and the artificial platform of the present invention; Figure 3 for Figure 2Enlarged view of point A in the middle; Figure 4 This is a top view of the first jig and the artificial platform of the present invention; Figure 5 This is a front view of the bottom stirrup comb bar of the present invention; Figure 6 This is a left view of the bottom stirrup comb bar of the present invention; Figure 7 This is a front view of the bottom outer cavity main rib comb rod of the present invention installed on the first jig; Figure 8 This is a left view of the main rib comb bar at the bottom outer cavity of the present invention mounted on the first frame; Figure 9 This is a front view of the main rib comb bar of the lateral outer cavity of the present invention without hooks; Figure 10 A front view showing the hooks provided on the main comb bars of the lateral outer cavity of this invention; Figure 11 This is a schematic diagram of the present invention after the corner stirrups, bottom stirrups, and bottom outer cavity main reinforcement are installed; Figure 12 This is a schematic diagram of the present invention after the bottom frame has been installed; Figure 13 This is a schematic diagram of the bottom frame installation method of the present invention; Figure 14 This is a schematic diagram of the invention after the main ribs of the bottom inner cavity have been installed; Figure 15 This is a schematic diagram showing the installation of lateral stirrups, lateral outer cavity main reinforcement, lateral inner cavity main reinforcement, and lateral skeleton of the present invention; Figure 16 for Figure 15 Enlarged view at point B in the middle; Figure 17 This is a schematic diagram showing the separation of the first and second tire frames of the present invention; Figure 18 This is a schematic diagram illustrating the lifting of the nth segment of the steel reinforcement component according to the present invention; Figure 19 This is a schematic diagram of the structure of the (n-1)th segment of the present invention; Figure 20 This is a schematic diagram showing the connection between the segmented steel reinforcement component of the nth segment and the (n-1)th segment of the present invention; Figure 21 This is a schematic diagram showing the arrangement of the jacks of the present invention; Figure 22 This is a schematic diagram of the connection between the main reinforcing bars of the present invention; Figure 23 This is a schematic diagram illustrating the fabrication of another segmented steel reinforcement component according to the present invention; Figure 24 This is a schematic diagram of the installation of the closing stirrups according to the present invention; Figure 25 This is a schematic diagram of the installation of loosely tied stirrups according to the present invention; Figure 26 This is a schematic diagram of the flared mouth structure of the present invention.

[0025] Reference numerals: 1. First frame; 2. Artificial platform; 3. Second frame; 4. Walking wheel; 5. Bottom stirrup comb rod; 51. Stirrup comb seat; 52. Stirrup clamp; 6. Lateral stirrup comb rod; 7. Bottom outer cavity main reinforcement comb rod; 71. First main reinforcement comb seat; 72. Main reinforcement clamp; 8. Lateral outer cavity main reinforcement comb rod; 81. Second main reinforcement comb seat; 82. Main reinforcement support plate; 83. Hook; 9. Bottom inner cavity main reinforcement comb rod; 10. Lateral inner cavity main reinforcement comb rod; 11. Corner stirrup; 12. Bottom outer cavity main reinforcement; 13. Bottom inner cavity main reinforcement; 14. Bottom skeleton; 15. Lateral stirrup; 16. Lateral outer cavity main reinforcement; 17. Lateral inner cavity main reinforcement; 18. Lateral skeleton; 19. Straight threaded sleeve; 20. Jack; 21. Closing stirrup; 22. Loose binding stirrup; 23. Roller; 24. Trumpet mouth; 25. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0027] Taking a bridge tower in a certain project as an example, the tower uses closed stirrups. These closed stirrups are interlocked and the reinforcing bars cannot be welded. The tower is divided into 33 segments starting from the top surface of the pier cap. Segments 1 to 22 are standard segments, while segments 23 and above are reinforced concrete. Among the 22 standard segments, segments 1, 2, 12, 13, 14, 20, and 22 are non-linear cross-section segments with complex reinforcement structures, making them unsuitable for modular construction. The remaining 15 segments are linear cross-section segments with internal cavities, which can be constructed using reinforced concrete components, such as… Figure 1 The diagram shows a cross-sectional view of the remaining 15 segments. This invention divides the reinforcing steel components of each segment into two sub-segments. These sub-segments are pre-fabricated and matched within a jig under the tower, then sequentially hoisted onto the tower for connection. The two sub-segments are lapped together by a closed stirrup. The main reinforcing bars at the staggered lap positions are finally installed on the tower, achieving rapid installation of bridge tower reinforcing steel, improving construction efficiency, and reducing the frequency of tower crane hoisting. This invention can also be extended to the construction of reinforcing steel for piers and beams.

[0028] The tire frame structure used in this invention is as follows: Figure 2 As shown, it includes a first jig 1 and a second jig 3. The first jig 1 and the second jig 3 have the same structure and are arranged symmetrically front to back. A manual platform 2 is provided on both sides of the first jig 1 and the second jig 3. Figure 2The diagram illustrates the structure of the first jig 1 and the artificial platforms 2 on both sides of the first jig 1. The first jig 1, the second jig 3, and the artificial platforms 2 are all arranged on the track via wheels 4. The first jig 1 and the second jig 3 are both constructed by splicing multiple horizontal beams longitudinally, and their bottoms are rotatably connected to the wheels 4 via columns.

[0029] Both the first jig 1 and the second jig 3 are equipped with bottom stirrup comb rods 5 and bottom outer cavity main reinforcement comb rods 7. The bottom stirrup comb rods 5 and bottom outer cavity main reinforcement comb rods 7 are arranged vertically. The bottom stirrup comb rods 5 and bottom outer cavity main reinforcement comb rods 7 are respectively provided with multiple bottom stirrup 12 limiting grooves and multiple bottom outer cavity main reinforcement 13 limiting grooves. As shown in 3 and 4, the bottom outer cavity main reinforcement comb rods 7 are arranged in the transverse direction. The bottom outer cavity main reinforcement 13 limiting grooves on the bottom outer cavity main reinforcement comb rods 7 are arranged in the transverse direction. The bottom outer cavity main reinforcement 13 can be installed in the bottom outer cavity main reinforcement 13 limiting grooves in the longitudinal direction and is simultaneously limited by multiple bottom outer cavity main reinforcement comb rods 7. The bottom stirrup comb rods 5 are arranged in the longitudinal direction. The bottom stirrup 12 limiting grooves on the bottom stirrup comb rods 5 are arranged in the longitudinal direction. The bottom stirrup 12 can be installed in the bottom stirrup 12 limiting grooves in the transverse direction and is simultaneously limited by multiple bottom stirrup comb rods 5.

[0030] Artificial platforms 2 are provided on both sides of the first jig 1 and the second jig 3. Lateral stirrup comb rods 6 and lateral outer cavity main reinforcement comb rods 8 are provided on the side of the artificial platform 2 closest to the first jig 1 or the second jig 3. The lateral stirrup comb rods 6 and lateral outer cavity main reinforcement comb rods 8 are arranged vertically. Multiple lateral stirrup 16 limiting grooves and multiple lateral outer cavity main reinforcement 17 limiting grooves are respectively provided on the lateral stirrup comb rods 6 and lateral outer cavity main reinforcement comb rods 8. Figure 3 , 4 As shown, Figure 4 The lateral outer cavity main reinforcement comb rod 8 is not shown. Both the lateral outer cavity main reinforcement comb rod 8 and the lateral stirrup comb rod 6 are bolted to the diagonal bracing of the artificial platform 2. The diagonal bracing can be spliced ​​from multiple transverse and longitudinal beams. The lateral outer cavity main reinforcement comb rod 8 is arranged transversely. The lateral outer cavity main reinforcement 17 limiting groove on the lateral outer cavity main reinforcement comb rod 8 is arranged transversely. The lateral outer cavity main reinforcement 17 can be installed longitudinally in the limiting groove of the bottom outer cavity main reinforcement 13 and is simultaneously limited by multiple lateral outer cavity main reinforcement comb rods 8. The lateral stirrup comb rod 6 is arranged longitudinally. The lateral stirrup 16 limiting groove on the lateral stirrup comb rod 6 is arranged longitudinally. The lateral stirrup 16 can be installed transversely in the limiting groove of the lateral stirrup 16 and is simultaneously limited by multiple lateral stirrup comb rods 6.

[0031] like Figure 5 , 6As shown, the bottom stirrup comb rod 5 includes a stirrup comb seat 51 and multiple stirrup teeth 52 fixedly mounted on the stirrup comb seat 51. Two stirrup teeth 52 form a group, and a bottom stirrup 12 limiting groove is provided between the two stirrup teeth 52 in a group. Figure 4 As shown, multiple bottom stirrup comb rods 5 are coaxially arranged along a longitudinal straight line. Both ends of the bottom stirrup comb rods 5 can be detachably installed on the crossbeam of the first jig 1 or directly on the longitudinal beam of the first jig 1 via end plates and bolts. It is only necessary to ensure that the main reinforcement bars are located within the closed stirrups and do not interfere with them during installation. The structure of the lateral stirrup comb rods 6 is the same as that of the bottom stirrup comb rods 5. The lateral stirrup comb rods 6 can be detachably installed on the diagonal brace of the artificial platform 2 near the first jig 1 via end plates and bolts.

[0032] like Figure 7 , 8 As shown, the bottom outer cavity main reinforcement comb rod 7 includes a first main reinforcement comb seat 71 and multiple main reinforcement teeth 72 fixedly installed on the first main reinforcement comb seat 71. The space between two adjacent main reinforcement teeth 72 is the bottom outer cavity main reinforcement 13 limiting groove. The bottom outer cavity main reinforcement comb rod 7 can be directly fixed to the crossbeam by bolts.

[0033] like Figure 9 , 10 As shown, the lateral outer cavity main rib comb bar 8 includes a second main rib comb seat 81 and multiple main rib support plates 82 fixedly mounted on the second main rib comb seat 81. The main ribs can be directly placed on the main rib support plates 82, and for Figure 10 In the posture shown, a hook 83 is provided at the end of the main reinforcement support plate 82 away from the second main reinforcement comb seat 81 to prevent the main reinforcement from falling off. Figure 9 The lateral outer cavity main rib comb bar 8 shown is used for Figure 1 Fabrication of the segmented steel reinforcement components in the upper and middle sections. Figure 10 The lateral outer cavity main rib comb bar 8 shown is used for Figure 1 Fabrication of the segmented steel reinforcement components in the lower and middle sections.

[0034] In this invention, the first jig 1 and the second jig 3 alternately serve as the matching jig and the manufacturing jig. The matching jig is used to place the steel reinforcement components of the current segment, and the manufacturing jig is used to manufacture the steel reinforcement components of the next segment based on the steel reinforcement components on the matching jig. That is, the steel reinforcement components of the next segment are manufactured with the steel reinforcement components on the matching jig as the positioning reference, which ensures the manufacturing progress of the segmented steel reinforcement components and enables the segmented steel reinforcement components to be quickly connected to the previous segment after being hoisted onto the tower, which is beneficial to improving construction efficiency.

[0035] The construction method for segmented steel reinforcement components using the above-mentioned frame structure includes: S1. Assuming that the nth segment of the steel reinforcement component has been completed on the second jig 3, and the (n+1)th segment of the steel reinforcement component needs to be manufactured, the horizontal (nth segment of the steel reinforcement component) on the second jig 3 is used as the matching steel reinforcement component, and the (n+1)th segment of the steel reinforcement component is manufactured on the first jig 1. At this time, the first jig 1 is the manufacturing jig, and the second jig 3 is the matching jig. by Figure 1 Taking the fabrication of the segmented steel reinforcement components in the upper and middle sections as an example, step S1 includes: S11. Install corner stirrups 11, bottom stirrups 12, and bottom outer cavity main reinforcement 13 sequentially on the first jig 1, and match and connect the bottom outer cavity main reinforcement 13 with the main reinforcement on the second jig 3; install the bottom skeleton 15 into the bottom stirrups 12; install the bottom inner cavity main reinforcement 14 on the bottom skeleton 15, and match and connect the bottom inner cavity main reinforcement 14 with the main reinforcement on the second jig 3; install tie bars, and tie and fix the tie bars, bottom skeleton 15, bottom outer cavity main reinforcement 13 and bottom inner cavity main reinforcement 14, corner stirrups 11 and bottom stirrups 12. Step S11 specifically includes: like Figure 11 As shown, corner stirrups 11 are placed on the bottom stirrup comb rod 5 of the first jig frame 1. The corner stirrups 11 are positioned and limited by the bottom stirrup comb rod 5 of the first jig frame 1 and the lateral stirrup comb rod 6 of the artificial platform 2. Bottom stirrups 12 are placed on the bottom stirrup comb rod 5 of the first jig frame 1, and the bottom stirrups 12 and corner stirrups 11 are tied and fixed.

[0036] A bottom outer cavity main rib 13 is installed on the comb-tooth rod 7 of the bottom outer cavity main rib of the first frame 1, and the bottom outer cavity main rib 13 is matched and connected with the corresponding main rib on the second frame 3; such as Figure 16 As shown, the main reinforcement of the bridge tower is a double row of main reinforcement. When installing the bottom outer cavity main reinforcement 13, the first row of bottom outer cavity main reinforcement 13 is installed first. The first row of bottom outer cavity main reinforcement 13 rests at the bottom of the bottom outer cavity main reinforcement 13 limiting groove. One end of the first row of bottom outer cavity main reinforcement 13 is matched and connected to the corresponding main reinforcement on the second jig 3 (connected by straight thread sleeve 20). Plain round steel bars are placed horizontally on the first row of bottom outer cavity main reinforcement 13 (i.e., the plain round steel bars are arranged perpendicular to the bottom outer cavity main reinforcement 13). The plain round steel bars are tied and fixed to the first row of bottom outer cavity main reinforcement 13. Then the second row of bottom outer cavity main reinforcement 13 is installed. One end of the second row of bottom outer cavity main reinforcement 13 is matched and connected to the corresponding main reinforcement on the second jig 3 (connected by straight thread sleeve 20). The two rows of bottom outer cavity main reinforcement 13 are tied and fixed. The two rows of bottom outer cavity main reinforcement 13 are axially misaligned during installation. Figure 16 The plain round steel bars are not shown in the diagram. They are located between the two rows of bottom outer cavity main reinforcement bars 13.

[0037] like Figure 12As shown, a bottom skeleton 15 is placed inside the bottom stirrup 12, and the bottom skeleton 15 is tied and fixed to the bottom outer cavity main reinforcement 13; as shown Figure 13 As shown, when placing the bottom frame 15, multiple rollers 24 are installed on the side of the first frame 1 away from the second frame 3. The bottom frame 15 is pulled into the bottom stirrup 12 by a winch. Then, the bottom frame 15 is lifted and its posture is adjusted by a frame lifting device. After the adjustment is completed, it is lowered and the bottom frame 15 is fixedly connected to the bottom outer cavity main reinforcement 13 by clamps.

[0038] like Figure 14 As shown, the bottom inner cavity main rib comb rod 9 is installed on the bottom frame 15. The structure of the bottom inner cavity main rib comb rod 9 is exactly the same as that of the bottom outer cavity main rib comb rod 7. The bottom inner cavity main rib comb rod 9 can be fixed to the bottom frame 15 with bolts. The bottom inner cavity main rib 14 is placed on the bottom inner cavity main rib comb rod 9. The installation method of the bottom inner cavity main rib 14 is exactly the same as that of the bottom outer cavity main rib 13. The bottom inner cavity main rib 14 is matched and connected with the corresponding main rib on the second jig 3. The bottom inner cavity main rib comb rod 9 is removed, and the hook rib is installed. The hook rib, bottom frame 15, bottom outer cavity main rib 13 and bottom inner cavity main rib 14, corner hoop rib 11 and bottom hoop rib 12 are tied and fixed. If necessary, clamps are used for binding.

[0039] S12. Install lateral stirrups 16 and lateral outer cavity main reinforcement 17 sequentially on the artificial platforms 2 on both sides of the first jig 1, and match and connect the lateral outer cavity main reinforcement 17 with the main reinforcement on the second jig 3; install lateral frame 19 inside the lateral stirrups 16; install lateral inner cavity main reinforcement 18 on the lateral frame 19, and match and connect the lateral inner cavity main reinforcement 18 with the main reinforcement on the second jig 3; install tie bars, and tie and fix the tie bars, lateral frame 19, lateral outer cavity main reinforcement 17, lateral inner cavity main reinforcement 18, and lateral stirrups 16. Step S12 specifically includes: like Figure 15 , 16 As shown, lateral stirrups 16 are installed on the lateral stirrup comb rods 6 on the artificial platforms 2 on both sides of the first jig frame 1, and the lateral stirrups 16 are tied and fixed with the corner stirrups 11 and the bottom stirrups 12.

[0040] Place the lateral outer cavity main rib 17 on the comb bar 8 of the lateral outer cavity main rib on the artificial platform 2, and match and connect the lateral outer cavity main rib 17 with the corresponding main rib on the second frame 3.

[0041] Place the lateral skeleton 19 inside the lateral stirrup 16, and tie the lateral skeleton 19 to the lateral outer cavity main reinforcement 17; the lateral skeleton 19 is also placed inside the lateral stirrup 16 using the roller 24.

[0042] Install the lateral inner cavity main rib comb rod 10 on the lateral frame 19, place the lateral inner cavity main rib 18 on the lateral inner cavity main rib comb rod 10, connect the lateral inner cavity main rib 18 to the corresponding main rib on the second frame 3, and disassemble the lateral inner cavity main rib comb rod 10; the installation method of the lateral outer cavity main rib 17 and the lateral inner cavity main rib 18 is similar to the installation method of the bottom outer cavity main rib 13.

[0043] Install tie bars, and tie and fix the tie bars, lateral skeleton 19, lateral outer cavity main reinforcement 17 and lateral inner cavity main reinforcement 18, corner stirrups 11 and lateral stirrups 16. If necessary, use clamps for binding.

[0044] At this point, the fabrication of one segment of the reinforcing steel component for the (n+1)th segment is complete; S13, such as Figure 17 As shown, the main reinforcing bars on the first jig 1 and the main reinforcing bars on the second jig 3 are disconnected and separated (as shown). Figure 22 As shown, rotate the straight threaded sleeve 20 on the main rib and rotate the straight threaded sleeve 20 to the main rib on the second jig 3), and remove the bottom inner cavity main rib comb rod 9 and the side inner cavity main rib comb rod 10 on the first jig 1.

[0045] S14. Repeat steps S11 to S13 to produce the other segmented steel reinforcement components for the (n+1)th segment, such as... Figure 23 As shown, Figure 1 The jig structure used for the lower half of the segmented steel reinforcement components is different from that used for the upper half. When making other segmented steel reinforcement components, step S2 can be performed, which is to connect the completed segmented steel reinforcement components to the previous segment.

[0046] It should be noted that the bottom stirrup comb bar 5, the side stirrup comb bar 6, the bottom outer cavity main reinforcement comb bar 7, the side outer cavity main reinforcement comb bar 8, the bottom inner cavity main reinforcement comb bar 9, and the side inner cavity main reinforcement comb bar 10 of the present invention do not need to be consistent with the length or width of the jig, and can all be spliced ​​in multiple segments to achieve the required length.

[0047] S2. Hoist the segmented steel reinforcement component of the nth section on the second frame 3 to the top of the bridge tower and fix it to the (n-1)th section. In some embodiments, step S2 includes: like Figure 18 As shown, the component lifting equipment is hoisted to the top of the nth segment of the steel reinforcement component by a tower crane and the lifting point is connected; the bottom of the steel reinforcement component is hoisted with the assistance of a truck crane, the steel reinforcement component on the first jig 1 is turned over, and the truck crane lifting equipment is disassembled after turning over; the nth segment of the steel reinforcement component is erected and hoisted to the top of the bridge tower.

[0048] like Figure 19As shown, the manual operation platform is hoisted to the nth segment in advance, and a bell-shaped opening 25 for positioning and guiding the main reinforcement is installed at the corner main reinforcement of the (n-1)th segment, as shown. Figure 26 As shown, the flared opening 25 includes a lower semi-cylinder and an upper semi-conical barrel, which are connected by welding. Connecting lugs are welded to both sides of the semi-cylinder. By symmetrically fitting the two flared openings 25 onto the corner main reinforcement of the (n-1)th segment, the two flared openings 25 can be fixed and tightened onto the corner main reinforcement of the (n-1)th segment using bolts and connecting lugs. The segmented steel reinforcement of the nth segment is then test-lifted, and the segmented steel reinforcement of the nth segment is positioned and connected to the (n-1)th segment through the flared openings 25. Figure 20 As shown.

[0049] like Figure 21 As shown, a jack 21 is installed at the bottom of the skeleton of the segmented steel reinforcement component in the nth segment. The lower end of the jack 21 supports the skeleton of the (n-1)th segment. A windproof cable is connected to the segmented steel reinforcement component in the nth segment. The posture of the segmented steel reinforcement component in the nth segment is adjusted by using the jack 21 and the windproof cable to align the skeleton of the nth segment with the skeleton of the (n-1)th segment. The skeleton of the nth segment and the skeleton of the (n-1)th segment are then fixedly connected by bolts. Angle steel can be welded to some positions at the connection of the skeleton to strengthen the connection between the two segments of the skeleton.

[0050] Rotate the straight threaded sleeve 20 at the upper end of the main reinforcement of the (n-1)th segment to fix the main reinforcement of the nth segment to the main reinforcement of the (n-1)th segment through the straight threaded sleeve 20. If some main reinforcements cannot be aligned, the binding connection below the main reinforcement of the nth segment needs to be released until the straight threaded sleeve 20 can be screwed to the main reinforcement to be connected.

[0051] S3. Join the multiple segmented steel reinforcement components of the nth segment together; In some embodiments, step S3 includes: like Figure 24 As shown, the closure joint of two adjacent sub-section steel reinforcement components is a separate closed stirrup. A closed closure stirrup 22 is placed between two adjacent sub-section steel reinforcement components, and the closure stirrup 22 is connected to the stirrup of the sub-section steel reinforcement component. Insert the main reinforcement bars into the closure stirrups 22, inserting them from top to bottom. First insert the innermost main reinforcement bars, then insert the outermost main reinforcement bars. Fix the closure main reinforcement bars to the main reinforcement bars of the (n-1)th segment through the straight threaded sleeve 20. Mark points on the skeleton to determine the outer outline of the reinforcing bars, and adjust the position of the closure stirrups 22; a hand-operated hoist or other method can be used to adjust the closure stirrups 22 with large deviations; Tie and fix the closure stirrups 22 and the closure main bars together.

[0052] S4. Install loosely tied reinforcing bars at the connection between the main reinforcement bars of the nth segment and the main reinforcement bars of the (n-1)th segment. In some embodiments, step S4 includes: like Figure 20 As shown, no stirrups are installed at the connection between the main bars of the two segments. Before the main bars of the nth segment are connected to the main bars of the (n-1)th segment, multiple loosely tied stirrups 23 are put on the main bars of the (n-1)th segment. Multiple loosely tied stirrups 23 are sequentially lifted to the installation position and fixedly connected to the main reinforcement of the nth segment and the (n-1)th segment, as follows: Figure 25 As shown; Install the pull hooks and secure them.

[0053] At this point, the construction of the steel reinforcement components for the nth segment is complete, and the concrete construction process for the nth segment can now begin.

[0054] S5. Using the (n+1)th segment of the segmented steel reinforcement on the first jig 1 as the matching steel reinforcement, the (n+2)th segment of the segmented steel reinforcement is manufactured on the second jig 3. At this time, the first jig 1 is the matching jig 1 and the second jig 3 is the manufacturing jig 3. After the (n+2)th segment of the segmented steel reinforcement is manufactured, the (n+1)th segment of the segmented steel reinforcement is fixedly connected to the nth segment. Repeat the above steps to complete the fabrication and installation of each segment of steel reinforcement components.

[0055] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A construction method for segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement bars, characterized in that, include: S1. Using the segmented steel reinforcement component of the nth section lying on the second frame (3) as the matching steel reinforcement component, the segmented steel reinforcement component of the n+1th section is manufactured on the first frame (1). S2. Hoist the segmented steel reinforcement components of the nth section on the second frame (3) to the top of the bridge tower and fix them to the (n-1)th section. S3. Connect the multiple sub-sections of the nth segment with closure stirrups at the closure joints and install the closure main reinforcement. S4. Install loosely tied reinforcing bars at the connection between the main reinforcement bars of the nth segment and the main reinforcement bars of the (n-1)th segment. S5. Using the segmented steel reinforcement component of the (n+1)th section on the first jig (1) as the matching steel reinforcement component, the segmented steel reinforcement component of the (n+2)th section is made on the second jig (3), and the segmented steel reinforcement component of the (n+1)th section is fixedly connected to the nth section. Repeat the above steps to complete the fabrication and installation of each segment of steel reinforcement components; When the reinforcing steel components are fabricated in two parts, step S1 includes: S11. According to the cross-sectional dimensions and structure of the segmented steel reinforcement components to be installed, adjust the dimensions of the comb rod. On the first jig (1), install the corner stirrup (11), bottom stirrup (12), and bottom outer cavity main reinforcement (13) in sequence through the comb rod limit. Match the bottom outer cavity main reinforcement (13) with the main reinforcement on the second jig (3). Install the bottom skeleton (15) into the bottom stirrup (12). The bottom skeleton (15) rests on the bottom outer cavity main reinforcement (13). Install the bottom inner cavity main reinforcement (14) on the bottom skeleton (15). The bottom inner cavity main reinforcement (14) rests on the bottom skeleton (15). Match the bottom inner cavity main reinforcement (14) with the main reinforcement on the second jig (3). Install the hook reinforcement. Tie the hook reinforcement, bottom skeleton (15), bottom outer cavity main reinforcement (13), bottom inner cavity main reinforcement (14), corner stirrup (11), and bottom stirrup (12) together. S12. Install lateral stirrups (16) and lateral outer cavity main reinforcement (17) sequentially on the artificial platforms (2) on both sides of the first jig (1). Connect the lateral outer cavity main reinforcement (17) to the main reinforcement on the second jig (3). Install the lateral skeleton (19) inside the lateral stirrups (16). Install the lateral inner cavity main reinforcement (18) on the lateral skeleton (19). Connect the lateral inner cavity main reinforcement (18) to the main reinforcement on the second jig (3). Install the tie bar and tie and fix the tie bar, lateral skeleton (19), lateral outer cavity main reinforcement (17), lateral inner cavity main reinforcement (18), and lateral stirrups (16). Complete the production of a segmented steel reinforcement component of the n+1th segment. S13. Disconnect and separate the main ribs on the first frame (1) from the main ribs on the second frame (3), and remove the bottom inner cavity main rib comb rod (9) and the side inner cavity main rib comb rod (10) on the first frame (1). S14. Repeat steps S11 to S13 to produce the other segmented steel reinforcement components for the (n+1)th segment.

2. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrup main reinforcement according to claim 1, characterized in that, Step S2 includes: The segmented steel reinforcement components of the nth section are hoisted to the top of the bridge tower; Connect the segmented steel reinforcement component of the nth segment to the (n-1)th segment of the bridge tower; A jack (21) is installed at the bottom of the skeleton of the segmented steel reinforcement component in the nth segment. The lower end of the jack (21) is pressed against the skeleton of the (n-1)th segment. A windproof cable is connected to the segmented steel reinforcement component in the nth segment. The posture of the segmented steel reinforcement component in the nth segment is adjusted by using the jack (21) and the windproof cable so that the skeleton of the nth segment is aligned with the skeleton of the (n-1)th segment. The skeleton of the nth segment is then fixedly connected to the skeleton of the (n-1)th segment. The main reinforcement of segment n is fixedly connected to the main reinforcement of segment n-1.

3. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement bars according to claim 1, characterized in that, Step S3 includes: Place a closing stirrup (22) between two adjacent segmented steel reinforcement components and connect the closing stirrup (22) to the stirrup of the segmented steel reinforcement component; Insert the main reinforcement bar into the closure stirrup (22) and fix the main reinforcement bar to the main reinforcement bar of the (n-1)th segment; Place points on the skeleton to determine the outer outline of the steel bars, and adjust the position of the closing stirrups (22); The closure stirrups (22) and the closure main bars are fixedly connected.

4. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement bars according to claim 3, characterized in that, Methods for inserting closure main reinforcement bars into the closure stirrups (22) include: Insert the main reinforcing bars from top to bottom, first inserting the innermost bars and then the outermost bars.

5. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrup main reinforcement according to claim 2, characterized in that, Step S4 includes: Before the main reinforcement of segment n is connected to the main reinforcement of segment n-1, multiple loosely tied stirrups (23) are placed on the main reinforcement of segment n-1; Multiple loosely tied stirrups (23) are sequentially lifted to the installation position and fixedly connected with the main reinforcement of the nth segment and the main reinforcement of the (n-1)th segment; Install the pull hooks and secure them.

6. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrup main reinforcement according to claim 1, characterized in that, Step S11 includes: A corner hoop (11) is placed on the bottom hoop comb rod (5) of the first jig (1). The corner hoop (11) is positioned and limited by the bottom hoop comb rod (5) of the first jig (1) and the lateral hoop comb rod (6) of the artificial platform (2). A bottom hoop (12) is placed on the bottom hoop comb rod (5) of the first jig (1). The bottom hoop (12) and the corner hoop (11) are tied and fixed. Install the bottom outer cavity main rib (13) on the comb rod (7) of the bottom outer cavity main rib of the first frame (1), and match and connect the bottom outer cavity main rib (13) with the corresponding main rib on the second frame (3); Place the bottom skeleton (15) inside the bottom stirrup (12), and tie the bottom skeleton (15) to the bottom outer cavity main reinforcement (13) for fixation; Install the bottom inner cavity main reinforcement comb rod (9) on the bottom frame (15), place the bottom inner cavity main reinforcement (14) on the bottom inner cavity main reinforcement comb rod (9), match and connect the bottom inner cavity main reinforcement (14) with the corresponding main reinforcement on the second frame (3), remove the bottom inner cavity main reinforcement comb rod (9), install the hook reinforcement, and tie and fix the hook reinforcement, bottom frame (15), bottom outer cavity main reinforcement (13) and bottom inner cavity main reinforcement (14), corner hoop (11) and bottom hoop (12).

7. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement bars according to claim 1, characterized in that, Step S12 includes: Install lateral stirrups (16) on the lateral stirrup comb rods (6) on the artificial platforms (2) on both sides of the first jig (1), and tie and fix the lateral stirrups (16) with the corner stirrups (11) and the bottom stirrups (12); Place the lateral outer cavity main rib (17) on the comb bar (8) of the lateral outer cavity main rib on the artificial platform (2), and match and connect the lateral outer cavity main rib (17) with the corresponding main rib on the second frame (3); Place a lateral skeleton (19) inside the lateral stirrup (16), and tie the lateral skeleton (19) to the lateral outer cavity main reinforcement (17) for fixation; Install the lateral inner cavity main reinforcement comb rod (10) on the lateral frame (19), place the lateral inner cavity main reinforcement (18) on the lateral inner cavity main reinforcement comb rod (10), connect the lateral inner cavity main reinforcement (18) to the corresponding main reinforcement on the second frame (3), remove the lateral inner cavity main reinforcement comb rod (10), install the hook reinforcement, and tie and fix the hook reinforcement, lateral frame (19), lateral outer cavity main reinforcement (17) and lateral inner cavity main reinforcement (18), corner hoop (11) and lateral hoop (16).

8. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement bars according to any one of claims 1 to 5, characterized in that, The main reinforcement bars of adjacent segments are matched and connected by straight threaded sleeves (20).

9. A system for implementing the method of constructing segmented steel reinforcement components with horizontal matching of closed stirrups and main reinforcement as described in any one of claims 1 to 8, characterized in that, Includes a first frame (1) and a second frame (3). Both sides of the first frame (1) and the second frame (3) are provided with artificial platforms (2). The first frame (1), the second frame (3) and the artificial platforms (2) are all arranged on the track by walking wheels (4). The first frame (1) and the second frame (3) are provided with bottom stirrup comb rods (5) and bottom outer cavity main reinforcement comb rods (7). The bottom stirrup comb rods (5) and the bottom outer cavity main reinforcement comb rods (7) are arranged vertically. The bottom stirrup comb rods (5) and the bottom outer cavity main reinforcement comb rods (7) are respectively provided with multiple bottom stirrup (12) limiting grooves and multiple bottom outer cavity main reinforcement (13) limiting grooves. The artificial platform (2) is provided with lateral stirrup comb rods (6) and lateral outer cavity main reinforcement comb rods (8) on the side near the first frame (1) or the second frame (3). The lateral stirrup comb rods (6) and lateral outer cavity main reinforcement comb rods (8) are arranged vertically. Multiple lateral stirrup (16) limiting grooves and multiple lateral outer cavity main reinforcement (17) limiting grooves are respectively provided on the lateral stirrup comb rods (6) and lateral outer cavity main reinforcement comb rods (8). The first jig (1) and the second jig (3) take turns serving as a matching jig and a manufacturing jig. The matching jig is used to place the steel reinforcement components of the current segment, and the manufacturing jig is used to manufacture the steel reinforcement components of the next segment based on the steel reinforcement components on the matching jig.

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