Construction method and system for blocked reinforcing steel bar component horizontally matched with closed stirrup and main reinforcing steel bar

Abstract

The invention provides a construction method and system for a blocked steel bar component horizontally matched with a main bar of a closed stirrup, and the method comprises the steps: S1, taking a blocked steel bar component of a horizontal nth section on a second jig frame as a matched steel bar component, and manufacturing the blocked steel bar component of an (n + 1) th section on a first jig frame; s2, the block steel bar component on the second jig frame is fixedly connected with the (n-1) th section of the bridge tower; s3, the multiple block steel bar components of the nth section are folded; s4, scattered binding steel bars are installed at the joints of the main bars of the nth section and the main bars of the (n-1) th section; s5, taking the blocked reinforcing steel bar component of the (n + 1) th section on the first jig frame as a matched reinforcing steel bar component, manufacturing the blocked reinforcing steel bar component of the (n + 2) th section on the second jig frame, and fixedly connecting the blocked reinforcing steel bar component of the (n + 1) th section with the nth section; and the steps are repeated, and manufacturing and mounting of the steel bar components of all the sections are completed. The method solves the problem of bridge tower reinforcing steel bar construction that the reinforcing steel bars cannot be welded when the cross section of the bridge tower is contracted and divided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel reinforcement part construction, in particular to a closed stirrup main reinforcement horizontal matching block steel reinforcement part construction method and system. BACKGROUND

[0002] With the improvement of bridge construction technology, the span of the bridge is also getting larger and larger, which requires the height of the bridge tower to be higher and higher, and the steel reinforcement structure of the bridge tower is more and more complex, which brings new challenges to the construction of the bridge tower reinforcement cage.

[0003] At present, the whole hoisting process of the bridge tower column steel reinforcement part is more and more mature, generally the steel reinforcement part is assembled, welded and fixed in the tower under the jig frame to form an integral segment steel reinforcement part, and finally hoisted to the tower to connect the main reinforcement through the extrusion locking cone sleeve, so as to realize the rapid installation of the steel reinforcement. For some scenes that cannot be welded, such as the use of epoxy steel reinforcement, the design clearly requires that the position where the steel reinforcement cannot be welded, the steel reinforcement cannot be welded, so the overall strength of the steel reinforcement part cannot be guaranteed, and in order to improve the seismic resistance, the closed stirrup form is adopted for part of the bridge tower steel reinforcement, so the general steel reinforcement part assembly method cannot be applied, and the whole hoisting of the steel reinforcement part requires a more powerful lifting equipment, which requires a large investment. Therefore, in view of this phenomenon, a non-welded main reinforcement horizontal matching closed stirrup block steel reinforcement part construction method is invented, so as to realize the rapid installation of the steel reinforcement part. SUMMARY

[0004] The purpose of the present application is to solve the defects of the prior art, provide a closed stirrup main reinforcement horizontal matching block steel reinforcement part construction method and system, which solves the problems of bridge tower steel reinforcement construction under the conditions of closed cross-section bridge tower, steel reinforcement cannot be welded, tower crane performance is limited, and steel reinforcement adopts straight thread sleeve connection by horizontally matching and assembling the block steel reinforcement part on the tower under the jig frame, and then hoisting it to the upper side of the bridge tower and connecting with the previous segment; the present application can also be popularized to the reinforcement construction of pier beam buildings.

[0005] In order to solve the above technical problems, on the one hand, the present application provides a closed stirrup main reinforcement horizontal matching block steel reinforcement part construction method, which comprises: S1, taking the block steel reinforcement part of the n-th segment on the second jig frame as the matching steel reinforcement part, and manufacturing the block steel reinforcement part of the n+1-th segment on the first jig frame; S2, hoisting the block steel reinforcement part of the n-th segment on the second jig frame to the upper side of the bridge tower, and fixedly connecting with the n-1-th segment; S3, connecting the block steel reinforcement part of the n-th segment through the closing stirrup at the joint of the block steel reinforcement parts, and installing the closing main reinforcement; S4, installing the scattered reinforcement at the connection between the main reinforcement of the n-th segment and the main reinforcement of the n-1-th segment; S5, taking the segmented steel bar part of the n+1 section on the first formwork as the matching steel bar part, making the segmented steel bar part of the n+2 section on the second formwork, and fixedly connecting the segmented steel bar part of the n+1 section and the n section; repeating the above steps to complete the making and installation of the segmented steel bar parts.

[0006] In some embodiments, the step S2 comprises: hoisting the segmented steel bar part of the n section above the bridge tower; abutting the segmented steel bar part of the n section with the n-1 section of the bridge tower; installing a jack at the bottom of the framework of the segmented steel bar part of the n section, the lower end of the jack abutting against the framework of the n-1 section, connecting a wind prevention cable on the segmented steel bar part of the n section, adjusting the posture of the segmented steel bar part of the n section by the jack and the wind prevention cable, so that the framework of the n section is aligned with the framework of the n-1 section, and fixedly connecting the framework of the n section with the framework of the n-1 section; fixedly connecting the main steel bars of the n section with the main steel bars of the n-1 section.

[0007] In some embodiments, the step S3 comprises: placing a closing stirrup between the two adjacent segmented steel bar parts, and connecting the closing stirrup with the stirrups of the segmented steel bar parts; inserting a closing main steel bar into the closing stirrup, and fixedly connecting the closing main steel bar with the main steel bars of the n-1 section; placing points on the framework, determining the outer contour line of the steel bars, and adjusting the position of the closing stirrup; fixedly connecting the closing stirrup and the closing main steel bar.

[0008] In some embodiments, the method of inserting the closing main steel bar into the closing stirrup comprises: inserting the closing main steel bar from top to bottom, first inserting the inner main steel bar, and then inserting the outer main steel bar.

[0009] In some embodiments, the step S4 comprises: before abutting the main steel bars of the n section with the main steel bars of the n-1 section, sleeving a plurality of loose binding stirrups on the main steel bars of the n-1 section; sequentially lifting the plurality of loose binding stirrups to the installation position, and fixedly connecting the plurality of loose binding stirrups with the main steel bars of the n section and the main steel bars of the n-1 section; installing a draw hook and binding and fixing.

[0010] In some embodiments, when the segmented steel bar part is made in two segments, the step S1 comprises: S11, according to the sectional size and structure of the block steel part to be installed, adjusting the size of the comb tooth rod, sequentially installing the corner point stirrup, the bottom stirrup, the bottom outer cavity main reinforcement through the comb tooth rod limiting on the first jig, matching and connecting the bottom outer cavity main reinforcement with the main reinforcement on the second jig; installing the bottom framework into the bottom stirrup, the bottom framework falling on the bottom outer cavity main reinforcement; installing the bottom inner cavity main reinforcement on the bottom framework, the bottom inner cavity main reinforcement falling on the bottom framework, matching and connecting the bottom inner cavity main reinforcement with the main reinforcement on the second jig; installing the draw hook reinforcement, binding and fixing the draw hook reinforcement, the bottom framework, the bottom outer cavity main reinforcement and the bottom inner cavity main reinforcement, the corner point stirrup and the bottom stirrup; S12, sequentially installing the lateral stirrup and the lateral outer cavity main reinforcement on the artificial platform on both sides of the first jig, matching and connecting the lateral outer cavity main reinforcement with the main reinforcement on the second jig; installing the lateral framework into the lateral stirrup; installing the lateral inner cavity main reinforcement on the lateral framework, matching and connecting the lateral inner cavity main reinforcement with the main reinforcement on the second jig; installing the draw hook reinforcement, binding and fixing the draw hook reinforcement, the lateral framework, the lateral outer cavity main reinforcement and the lateral inner cavity main reinforcement, the lateral stirrup; completing the manufacturing of one block steel part of the n+1 section; S13, disconnecting and separating the main reinforcement on the first jig from the main reinforcement on the second jig, and removing the bottom inner cavity main reinforcement comb tooth rod and the lateral inner cavity main reinforcement comb tooth rod on the first jig.

[0011] S14, repeating steps S11 to S13 to manufacture other block steel parts of the n+1 section.

[0012] Further, step S11 comprises: placing the corner point stirrup on the bottom stirrup comb tooth rod of the first jig, the corner point stirrup being positioned and limited by the bottom stirrup comb tooth rod of the first jig and the lateral stirrup comb tooth rod of the artificial platform, placing the bottom stirrup on the bottom stirrup comb tooth rod of the first jig, and binding and fixing the bottom stirrup and the corner point stirrup; installing the bottom outer cavity main reinforcement on the bottom outer cavity main reinforcement comb tooth rod of the first jig, and matching and connecting the bottom outer cavity main reinforcement with the corresponding main reinforcement on the second jig; placing the bottom framework into the bottom stirrup, and binding and fixing the bottom framework with the bottom outer cavity main reinforcement; installing the bottom inner cavity main reinforcement comb tooth rod on the bottom framework, placing the bottom inner cavity main reinforcement on the bottom inner cavity main reinforcement comb tooth rod, matching and connecting the bottom inner cavity main reinforcement with the corresponding main reinforcement on the second jig, disassembling the bottom inner cavity main reinforcement comb tooth rod, installing the draw hook reinforcement, and binding and fixing the draw hook reinforcement, the bottom framework, the bottom outer cavity main reinforcement and the bottom inner cavity main reinforcement, the corner point stirrup and the bottom stirrup.

[0013] Further, step S12 comprises: installing the lateral stirrup on the lateral stirrup comb tooth rod on the artificial platform on both sides of the first jig, and binding and fixing the lateral stirrup with the corner point stirrup and the bottom stirrup. Placing the lateral outer cavity main rib on the lateral outer cavity main rib comb tooth rod on the artificial platform, and matching and connecting the lateral outer cavity main rib with the corresponding main rib on the second mold base; Placing the lateral skeleton in the lateral hoop rib, and binding and fixing the lateral skeleton with the lateral outer cavity main rib; Installing the lateral inner cavity main rib comb tooth rod on the lateral skeleton, placing the lateral inner cavity main rib on the lateral inner cavity main rib comb tooth rod, connecting the lateral inner cavity main rib with the corresponding main rib on the second mold base, disassembling the lateral inner cavity main rib comb tooth rod, installing the pull hook rib, and binding and fixing the pull hook rib, the lateral skeleton, the lateral outer cavity main rib and the lateral inner cavity main rib, the corner point hoop rib and the lateral hoop rib.

[0014] Further, the main ribs of adjacent segments are matched and connected by straight thread sleeves.

[0015] In another aspect, the present application provides a system for implementing the closed hoop rib main rib horizontal matching block steel construction method, comprising a first mold base and a second mold base, both sides of the first mold base and the second mold base are provided with artificial platforms, the first mold base, the second mold base and the artificial platforms are arranged on the track through walking wheels, the first mold base and the second mold base are provided with bottom hoop rib comb tooth rods and bottom outer cavity main rib comb tooth rods, the bottom hoop rib comb tooth rods and the bottom outer cavity main rib comb tooth rods are vertically arranged, the bottom hoop rib comb tooth rods and the bottom outer cavity main rib comb tooth rods are respectively provided with a plurality of bottom hoop rib limiting grooves and a plurality of bottom outer cavity main rib limiting grooves; The side of the artificial platform close to the first mold base or the second mold base is provided with a lateral hoop rib comb tooth rod and a lateral outer cavity main rib comb tooth rod, the lateral hoop rib comb tooth rod and the lateral outer cavity main rib comb tooth rod are vertically arranged, the lateral hoop rib comb tooth rod and the lateral outer cavity main rib comb tooth rod are respectively provided with a plurality of lateral hoop rib limiting grooves and a plurality of lateral outer cavity main rib limiting grooves; The first mold base and the second mold base are used as matching mold bases and manufacturing mold bases alternately, the matching mold base is used for placing the steel parts of the current segment, and the manufacturing mold base is used for manufacturing the steel parts of the next segment according to the steel parts on the matching mold base.

[0016] The beneficial effects of the present application are: 1. The present application solves the problems of bridge tower steel construction under the conditions of receiving divided cross-section bridge towers, steel cannot be welded, tower crane performance is limited, and steel is connected by straight thread sleeves, by horizontally matching and assembling block steel parts on the tower mold base, then hoisting to the upper side of the bridge tower and connecting with the previous segment, and by folding to connect multiple block steel parts into one, and by unbundling the steel, the present application can be popularized to pier beam building steel construction.

[0017] 2. The segmented steel reinforcement part of the present application is connected with the previous segment, first the posture of the segmented steel reinforcement part is adjusted through the jack and the wind cable, so that the skeleton of the segmented steel reinforcement part is aligned with the skeleton of the previous segment, after the skeleton of the segmented steel reinforcement part is fixedly connected with the skeleton of the previous segment, the main reinforcement of the segmented steel reinforcement part is fixedly connected with the main reinforcement of the previous segment, the butt joint precision of the main reinforcement is ensured, and the construction efficiency is high.

[0018] 3. The present application first connects the closing stirrup with the stirrups of the adjacent two segmented steel reinforcement parts, then inserts the closing main reinforcement into the closing stirrup, after the closing main reinforcement is fixedly connected with the main reinforcement of the previous segment, the position of the closing stirrup is adjusted, and the steel reinforcement installation precision at the closing position of the adjacent two segmented steel reinforcement parts is ensured.

[0019] 4. When the closing main reinforcement is inserted into the closing stirrup, the inner main reinforcement is inserted first, and then the outer main reinforcement is inserted, which facilitates the tightening of the straight thread sleeve.

[0020] 5. The present application inserts the scattered binding stirrup into the main reinforcement of the previous segment in advance, after the main reinforcement of the current segment is connected with the main reinforcement of the previous segment, the scattered binding stirrup can be directly lifted to the installation position for binding and fixing, which is convenient to install.

[0021] 6. The present application divides the steel reinforcement part into two segmented steel reinforcement parts, the closing position of the two segmented steel reinforcement parts is the two side edges of the steel reinforcement part, the corner point stirrup and the bottom stirrup, and the bottom main reinforcement are installed by using the manufacturing jig, and the lateral stirrup and the lateral main reinforcement are installed by using the artificial platform on both sides of the manufacturing jig, so that the positioning and installation of all steel reinforcements are completed.

[0022] 7. The present application limits the installation of the stirrup and the outer cavity main reinforcement by installing the comb tooth rod on the manufacturing jig and the artificial platform, and positions and installs the bottom inner cavity main reinforcement and the lateral inner cavity main reinforcement by installing the comb tooth rod on the skeleton in the stirrup, so as to ensure the installation precision and improve the installation efficiency. In addition, each main reinforcement needs to be matched and connected with the main reinforcement on the matching jig, which also ensures the installation precision of the skeleton.

[0023] 8. The manufacturing jig and the artificial platform of the present application are arranged on the track, which facilitates the separation of the manufacturing jig and the matching jig; the straight thread sleeve is arranged on the main reinforcement of the matching jig, which facilitates the matching connection and separation of the main reinforcement on the manufacturing jig and the main reinforcement on the matching jig. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the segmented steel reinforcement part of the present application; Figure 2 It is a front view of the first jig and the artificial platform of the present application; Figure 3 It is Figure 2Enlarged view at A; Figure 4 Top view of the first formwork and artificial platform of the present invention; Figure 5 Front view of the bottom stirrup comb bar of the present invention; Figure 6 Left view of the bottom stirrup comb bar of the present invention; Figure 7 Front view of the bottom outer cavity main bar comb bar installed on the first formwork of the present invention; Figure 8 Left view of the bottom outer cavity main bar comb bar installed on the first formwork of the present invention; Figure 9 Front view of the lateral outer cavity main bar comb bar without hooks of the present invention; Figure 10 Front view of the lateral outer cavity main bar comb bar with hooks of the present invention; Figure 11 Schematic diagram of the present invention after installing the corner stirrup, bottom stirrup, and bottom outer cavity main bar; Figure 12 Schematic diagram of the present invention after installing the bottom framework; Figure 13 Schematic diagram of the present invention after installing the bottom framework; Figure 14 Schematic diagram of the present invention after installing the bottom inner cavity main bar; Figure 15 Schematic diagram of the present invention after installing the lateral stirrup, lateral outer cavity main bar, lateral inner cavity main bar, and lateral framework; Figure 16 Schematic diagram of the present invention Figure 15 Enlarged view at B; Figure 17 Schematic diagram of the present invention after separating the first formwork and the second formwork; Figure 18 Schematic diagram of the present invention after lifting the n-th segment of the segmented steel reinforcement part; Figure 19 Schematic diagram of the present invention after lifting the n-th segment of the segmented steel reinforcement part; Figure 20 Schematic diagram of the present invention after lifting the n-th segment of the segmented steel reinforcement part; Figure 21 Schematic diagram of the present invention after lifting the n-th segment of the segmented steel reinforcement part; Figure 22 Schematic diagram of the present invention after lifting the n-th segment of the segmented steel reinforcement part; Figure 23 Schematic diagram of the present invention after lifting the n-th segment of the segmented steel reinforcement part; Figure 24 Schematic diagram of the present invention after lifting the n-th segment of the segmented steel reinforcement part; 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 structure of the first mould bed 1 and the artificial platform 2 on both sides of the first mould bed 1 is shown in FIG. 1, the first mould bed 1, the second mould bed 3 and the artificial platform 2 are arranged on the track through the walking wheels 4. The first mould bed 1 and the second mould bed 3 are both made of multiple beams and longitudinal splices, and the bottom is rotationally connected with the walking wheels 4 through the vertical columns.

[0029] The first mould bed 1 and the second mould bed 3 are both provided with the bottom hoop bar comb tooth rod 5 and the bottom outer cavity main bar comb tooth rod 7, the bottom hoop bar comb tooth rod 5 and the bottom outer cavity main bar comb tooth rod 7 are vertically arranged, and the bottom hoop bar comb tooth rod 5 and the bottom outer cavity main bar comb tooth rod 7 are respectively provided with multiple bottom hoop bar 12 limiting grooves and multiple bottom outer cavity main bar 13 limiting grooves; as shown in FIG. 3 and FIG. 4, the bottom outer cavity main bar comb tooth rod 7 is arranged along the transverse direction, the bottom outer cavity main bar 13 limiting grooves on the bottom outer cavity main bar comb tooth rod 7 are arranged along the transverse direction, the bottom outer cavity main bar 13 can be installed in the bottom outer cavity main bar 13 limiting grooves along the longitudinal direction and at the same time be limited by multiple bottom outer cavity main bar comb tooth rods 7, the bottom hoop bar comb tooth rod 5 is arranged along the longitudinal direction, the bottom hoop bar 12 limiting grooves on the bottom hoop bar comb tooth rod 5 are arranged along the longitudinal direction, and the bottom hoop bar 12 can be installed in the bottom hoop bar 12 limiting grooves along the transverse direction and at the same time be limited by multiple bottom hoop bar comb tooth rods 5.

[0030] The artificial platform 2 is arranged on both sides of the first mould bed 1 and the second mould bed 3, and the side hoop bar comb tooth rod 6 and the side outer cavity main bar comb tooth rod 8 are arranged on the side of the artificial platform 2 close to the first mould bed 1 or the second mould bed 3, the side hoop bar comb tooth rod 6 and the side outer cavity main bar comb tooth rod 8 are vertically arranged, and the side hoop bar comb tooth rod 6 and the side outer cavity main bar comb tooth rod 8 are respectively provided with multiple side hoop bar 16 limiting grooves and multiple side outer cavity main bar 17 limiting grooves. Figure 3 、 4 As shown in FIG. 5 and FIG. 6, Figure 4 The side outer cavity main bar comb tooth rod 8 is not shown in FIG. 5 and FIG. 6, the side outer cavity main bar comb tooth rod 8 and the side hoop bar comb tooth rod 6 are both installed on the diagonal brace of the artificial platform 2 through bolts, the diagonal brace can be spliced by multiple transverse beams and longitudinal beams, the side outer cavity main bar comb tooth rod 8 is arranged along the transverse direction, the side outer cavity main bar 17 limiting grooves on the side outer cavity main bar comb tooth rod 8 are arranged along the transverse direction, the side outer cavity main bar 17 can be installed in the bottom outer cavity main bar 13 limiting grooves along the longitudinal direction and at the same time be limited by multiple side outer cavity main bar comb tooth rods 8, the side hoop bar comb tooth rod 6 is arranged along the longitudinal direction, the side hoop bar 16 limiting grooves on the side hoop bar comb tooth rod 6 are arranged along the longitudinal direction, and the side hoop bar 16 can be installed in the side hoop bar 16 limiting grooves along the transverse direction and at the same time be limited by multiple side hoop bar comb tooth rods 6.

[0031] As shown in FIG. 5 and FIG. 6, Figure 5 、 6As shown, the bottom stirrup comb bar 5 includes a stirrup comb seat 51 and a plurality of stirrup clutches 52 fixedly arranged on the stirrup comb seat 51, among which two are a group, and a bottom stirrup 12 limiting groove is arranged between the two stirrup clutches 52 of the group. Figure 4 As shown, the bottom stirrup comb bar 5 is coaxially arranged on a straight line in the longitudinal direction, and the two ends of the bottom stirrup comb bar 5 can be detachably mounted on the cross beam of the first bed 1 or directly mounted on the longitudinal beam of the first bed 1 through end plates and bolts, as long as the main reinforcement can be located in the closed stirrup and does not interfere with the stirrup when the main reinforcement is installed. The structure of the lateral stirrup comb bar 6 is the same as that of the bottom stirrup comb bar 5, and the lateral stirrup comb bar 6 can be detachably mounted on the inclined brace of the artificial platform 2 close to the first bed 1 through end plates and bolts.

[0032] As shown, Figure 7 , 8 As shown, the bottom outer cavity main reinforcement comb bar 7 includes a first main reinforcement comb seat 71 and a plurality of main reinforcement clutches 72 fixedly arranged on the first main reinforcement comb seat 71, and the bottom outer cavity main reinforcement 13 limiting groove is between the two adjacent main reinforcement clutches 72. The bottom outer cavity main reinforcement comb bar 7 can be directly fixed on the cross beam by bolts.

[0033] As shown, Figure 9 , 10 As shown, the lateral outer cavity main reinforcement comb bar 8 includes a second main reinforcement comb seat 81 and a plurality of main reinforcement support plates 82 fixedly arranged on the second main reinforcement comb seat 81, and the main reinforcement can be directly placed on the main reinforcement support plate 82, and for Figure 10 As shown, the hook 83 is arranged 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 reinforcement comb bar 8 shown is used for Figure 1 the manufacture of the upper half of the segmented steel reinforcement part in Figure 10 The lateral outer cavity main reinforcement comb bar 8 shown is used for Figure 1 the manufacture of the lower half of the segmented steel reinforcement part in

[0034] The first bed 1 and the second bed 3 of the present application take turns as matching beds and manufacturing beds. The matching bed is used to place the steel reinforcement part of the current segment, and the manufacturing bed is used to manufacture the steel reinforcement part of the next segment according to the steel reinforcement part on the matching bed, that is, the steel reinforcement part of the next segment is manufactured with the steel reinforcement part on the matching bed as the positioning reference, which ensures the manufacturing progress of the segmented steel reinforcement part and enables the segmented steel reinforcement part to be quickly connected with the last segment after being hoisted to the tower, thereby improving the construction efficiency.

[0035] The segmented steel reinforcement part construction method using the above bed structure comprises the following steps: S1, assuming that the production of the n-th segment of the sub-block steel reinforcement parts has been completed on the second jig 3, at this time, the production of the n+1-th segment of the sub-block steel reinforcement parts is needed, then the n-th segment of the sub-block steel reinforcement parts lying on the second jig 3 is taken as the matching steel reinforcement parts, and the production of the n+1-th segment of the sub-block steel reinforcement parts is carried out on the first jig 1, at this time, the first jig 1 is the production jig, and the second jig 3 is the matching jig; With Figure 1 Taking the production of the sub-block steel reinforcement parts of the upper half of the middle part as an example, step S1 includes: S11, sequentially installing the corner point stirrup 11, the bottom stirrup 12, and the bottom outer cavity main reinforcement 13 on the first jig 1, and connecting the bottom outer cavity main reinforcement 13 with the main reinforcement on the second jig 3; installing the bottom skeleton 15 into the bottom stirrup 12; installing the bottom inner cavity main reinforcement 14 on the bottom skeleton 15, and connecting the bottom inner cavity main reinforcement 14 with the main reinforcement on the second jig 3; installing the draw hook reinforcement, and binding and fixing the draw hook reinforcement, the bottom skeleton 15, the bottom outer cavity main reinforcement 13 and the bottom inner cavity main reinforcement 14, the corner point stirrup 11 and the bottom stirrup 12; Step S11 specifically includes: As shown in Figure 11 , the corner point stirrup 11 is placed on the bottom stirrup comb rod 5 of the first jig 1, and the corner point stirrup 11 is positioned and limited by the bottom stirrup comb rod 5 of the first jig 1 and the lateral stirrup comb rod 6 of the artificial platform 2, and the bottom stirrup 12 is placed on the bottom stirrup comb rod 5 of the first jig 1, and the bottom stirrup 12 and the corner point stirrup 11 are bound and fixed.

[0036] The bottom outer cavity main reinforcement 13 is installed on the bottom outer cavity main reinforcement comb rod 7 of the first jig 1, and the bottom outer cavity main reinforcement 13 is connected with the corresponding main reinforcement on the second jig 3; as shown in Figure 16 , the main reinforcement of the bridge tower is double-row 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 falls on 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 connected with the corresponding main reinforcement on the second jig 3 (connected through the straight thread sleeve 20), a light round steel is placed transversely on the first row of bottom outer cavity main reinforcement 13 (i.e. the light round steel is arranged perpendicular to the bottom outer cavity main reinforcement 13), and the light round steel and the first row of bottom outer cavity main reinforcement 13 are bound and fixed, 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 connected with the corresponding main reinforcement on the second jig 3 (connected through the straight thread sleeve 20), and the two rows of bottom outer cavity main reinforcement 13 are bound and fixed, and the two rows of bottom outer cavity main reinforcement 13 are axially staggered when installed; Figure 16 The light round steel is not shown in the middle part.

[0037] As shown in 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 section 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 the trumpet 25 for positioning and guiding the main reinforcement is installed at the corner main reinforcement of the n-1th segment, as shown in Figure 26 As shown, the trumpet 25 includes a lower semi-cylinder and an upper semi-conical barrel, which are connected by welding, and two connecting ears are welded on the two sides of the semi-cylinder. By symmetrically sleeving two trumpets 25 on the corner main reinforcement of the n-1th segment, the two trumpets 25 can be fixed and clamped on the corner main reinforcement of the n-1th segment by bolts and connecting ears. The segmented reinforcement parts of the nth segment are tested and hoisted, and the segmented reinforcement parts of the nth segment are positioned and connected with the n-1th segment through the trumpet 25, as shown in Figure 20

[0049] As shown in Figure 21 The jack 21 is installed at the bottom of the framework of the segmented reinforcement parts of the nth segment, the lower end of the jack 21 abuts against the framework of the n-1th segment, and the windproof cable is connected on the segmented reinforcement parts of the nth segment. The attitude of the segmented reinforcement parts of the nth segment is adjusted by the jack 21 and the windproof cable, so that the framework of the nth segment is aligned with the framework of the n-1th segment. The framework of the nth segment is fixed and connected with the framework of the n-1th segment by bolts. The position of the framework connection part can be increased by welding angle steel to strengthen the connection between the frameworks of the two segments.

[0050] The straight thread sleeve 20 at the upper end of the main reinforcement of the n-1th segment is rotated, and the main reinforcement of the nth segment is fixed and connected with the main reinforcement of the n-1th segment through the straight thread sleeve 20. If part of the main reinforcement cannot be aligned, the binding connection below the main reinforcement of the nth segment needs to be removed until the straight thread sleeve 20 can be screwed to the main reinforcement to be connected.

[0051] S3, folding the plurality of segmented reinforcement parts of the nth segment; In some embodiments, step S3 comprises: As shown in Figure 24 The folding part of the two adjacent segmented reinforcement parts is a separate closed stirrup, and the closed folding stirrup 22 is placed between the two adjacent segmented reinforcement parts, and the folding stirrup 22 is connected with the stirrup of the segmented reinforcement part. The folding main reinforcement is inserted into the folding stirrup 22 from top to bottom, the inner main reinforcement is inserted first, and then the outer main reinforcement is inserted. The folding main reinforcement is fixed and connected with the main reinforcement of the n-1th segment through the straight thread sleeve 20. Points are placed on the framework to determine the outer edge contour line of the reinforcement, and the position of the folding stirrup 22 is adjusted. The folding stirrup 22 with large deviation can be adjusted by using a chain hoist or the like. The folding stirrup 22 and the folding main reinforcement are fixed and connected by binding.

[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 frame (1) as the matching steel reinforcement component, the segmented steel reinforcement component of the (n+2)th section is made on the second frame (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 production and installation of the steel reinforcement components of each section.

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 bars according to any one of claims 1 to 5, characterized in that, 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.

7. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrup main reinforcement according to claim 6, 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).

8. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrup main bars according to claim 6, 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).

9. The construction method for segmented steel reinforcement components with horizontal matching of closed stirrup main 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).

10. 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 9, 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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