Sliding trolley for large-span structure construction and method thereof

Abstract

The invention discloses a sliding trolley for large-span structure construction and a method thereof, and belongs to the technical field of building engineering construction. The sliding trolley comprises a combined platform and further comprises an assembling support and a walking mechanism; the number of the combined platforms is four, and the four combined platforms are located on the four splicing positions correspondingly. The combined platform comprises a spliced upper chord, a spliced lower chord, a reinforced beam frame and a plurality of groups of connecting and supporting structures; a plurality of groups of walking mechanisms are mounted on the lower side of the reinforcing beam frame; the walking mechanism comprises a guide supporting structure, a walking structure and a rising and falling supporting structure, the walking structure is fixedly installed on the lower side of the reinforcing beam frame, the guide supporting structure is fixedly installed on the base table through bolts, and the walking structure is installed and connected with the guide supporting structure; a plurality of sets of rising and falling supporting structures are evenly installed in the middle of the reinforcing beam frame and on the base table at equal intervals. By means of the mode, the assembling support and the bracket move back and forth below a large-span structure through the four sets of walking mechanisms and the connecting structure on the upper side, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering construction, in particular to a sliding trolley for large-span structure construction and a method thereof. BACKGROUND

[0002] The existing sliding trolley technology includes traditional sliding trolley, high-altitude sliding technology, automatic sliding trolley system and multifunctional integrated trolley technology; the traditional sliding trolley technology relies on the support pier body to slide, reducing the dependence on the foundation, but is limited by the structural rigidity and track fixation, and is difficult to adapt to complex cross-section changes; the high-altitude sliding technology moves the segmented assembled structure as a whole through the sliding rail, which is commonly used in large-span steel roof construction; the driving mechanism (such as ball screw or electro-hydraulic push rod) of the automatic sliding trolley system has slow response speed, which is difficult to meet the demand for rapid correction, and the mechanical structure is complex, with high maintenance cost.

[0003] The existing sliding trolley technology has the following defects when applied in the field of large-span structure construction:

[0004] The construction process is complex, and the assembled structure needs to be slid after assembly, without in-situ assembly: in the existing high-altitude sliding technology, the single-span large-span structure is assembled and then slid by the sliding trolley;

[0005] It is difficult to realize real-time correction: the existing driving system has a slow response, which is difficult to realize high-precision real-time correction, especially in high-precision scenarios such as automatic wharf hoisting, where positioning error accumulation is a major problem;

[0006] High structural reliability and maintenance cost: the complex mechanical structure of key components (such as rotary support and multi-stage transmission) increases the failure rate, and the maintenance is difficult, which reduces the utilization rate of the equipment.

[0007] Therefore, the present application designs a sliding trolley for large-span structure construction and a method thereof to solve the above problems. SUMMARY

[0008] In view of the above-mentioned shortcomings of the prior art, the present application provides a sliding trolley for large-span structure construction and a method thereof.

[0009] To achieve the above purpose, the present application realizes the following technical scheme:

[0010] A sliding trolley for large-span structure construction, comprising a combined platform, a assembling support and a walking mechanism;

[0011] The combined platform is provided with four groups, and the four groups of combined platforms are respectively located on four assembling positions;

[0012] The combined platform comprises spliced upper chords, spliced lower chords, reinforced beam frames and multiple sets of connecting support structures; the spliced upper chords and the spliced lower chords are connected through the multiple sets of connecting support structures; multiple sets of distribution beams are fixedly installed on the spliced upper chords at equal intervals; multiple sets of assembly supports are installed on the distribution beams; the spliced lower chords and the reinforced beam frames are connected through the multiple sets of connecting support structures; multiple sets of traveling mechanisms are installed on the lower side of the reinforced beam frames;

[0013] The traveling mechanism comprises a guide support structure, a traveling structure and a lifting support structure; the traveling structure is installed on the lower side of the reinforced beam frame; the guide support structure is fixedly installed on the base through bolts; the traveling structure is connected with the guide support structure; multiple sets of lifting support structures are fixedly installed on the middle part of the reinforced beam frame and the base at equal intervals.

[0014] Further, the top of the assembly support is provided with a bracket for supporting the large-span structure.

[0015] Further, the connecting support structure comprises vertical web members, inclined web members, horizontal web members, flanges and vertical columns; three sets of vertical columns are provided; the flanges are fixedly installed on the ends of the vertical columns; the bolts pass through the adjacent flanges and are fastened by nuts; the upper vertical columns are welded with the spliced upper chords and the spliced lower chords; the middle vertical columns are welded with the horizontal web members; the lower vertical columns are welded with the reinforced beam frames; multiple sets of vertical web members and inclined web members are welded between the spliced upper chords and the spliced lower chords; multiple sets of inclined web members are welded between the spliced lower chords and the middle vertical columns; multiple sets of inclined web members are welded between the horizontal web members and the lower vertical columns.

[0016] Further, the guide support structure comprises embedded parts and slides; the embedded parts are fixedly installed on the base in a direction perpendicular to the large-span structure; the slides are detachably installed on the embedded parts through bolts.

[0017] Further, the traveling structure comprises moving support seats, moving wheels and moving wheels; multiple sets of moving support seats are fixedly installed on the lower side of the reinforced beam frame; a set of moving support seats is rotatably installed with a moving wheel driven by a speed reducer; the other moving support seats are rotatably installed with moving wheels.

[0018] Further, the lifting support structure comprises lifting pads, lifting jacks, lifting support tables and lateral supports; multiple sets of lifting support tables are fixedly installed on the middle part of the reinforced beam frame at equal intervals; the lifting jacks for supporting the lifting support tables are symmetrically distributed on both sides of the lifting support tables; the lifting jacks are detachably installed on the base through bolts; multiple sets of lateral supports are fixedly installed on the bottom of the vertical columns on the side; after the lifting jacks lift the reinforced beam frame and the connecting structure through the lifting support tables, the lifting pads are placed between the bottom of the middle vertical column and the base, and the lifting pads are placed between the bottom of the lateral support and the base.

[0019] Further, the assembling support comprises the second column, the connecting rod, the second distribution beam and the cross rod, the second column and the connecting rod are welded, the second column is welded on the first distribution beam; the second column upper portion is welded with the second distribution beam; the second distribution beam is welded with the cross rod.

[0020] A large-span structure construction method, comprising the following steps:

[0021] Step one: installing the guide support structure on the base in the direction from the fourth assembling position to the first assembling position, making the multiple groups of walking structures slide on the guide support structure, welding the reinforcing beam frame, the connecting support structure, the lower chord and the upper chord on the walking structure in sequence, welding the bracket for supporting the large-span structure on the upper chord, then welding the landing support structure on the base and the reinforcing beam frame, and adjusting the landing support structure so that the walking structure is not in contact with the base;

[0022] Step two: after the bracket of the fourth assembling position is welded, the large-span structure of the fourth assembling position is assembled in situ; then after the brackets of the third assembling position, the second assembling position and the first assembling position are welded, the large-span structures of the corresponding positions are assembled in sequence;

[0023] Step three: after the large-span structure of the first assembling position is assembled, the bracket of the fourth assembling position is separated from the large-span structure; then the landing support structure is adjusted so that the walking structure is in contact with the base; then the fourth assembling position reinforcing beam frame and the related connecting structure are moved to the next large-span structure splicing position by the walking structure, so that the walking structure is separated from the base, and the next large-span structure is spliced; then after the large-span structures of the third assembling position, the second assembling position and the first assembling position are completely stable, the walking structures of the corresponding positions are moved to the next large-span structure splicing position in sequence, and the large-span structures are spliced.

[0024] Compared with the prior art, the beneficial effects of the present application are that: the guide support structure is sequentially installed on the base platform in the direction from the fourth assembly position to the first assembly position, the plurality of walking structures are limited to slide on the guide support structure, the reinforcing beam frames are sequentially welded on the walking structures, the connecting support structures are sequentially welded on the reinforcing beam frames, the lower chords and the upper chords are sequentially welded on the connecting support structures; the bracket for supporting the large-span structure is welded on the upper chord; then the landing support structure is welded on the base platform and the reinforcing beam frame, and the landing support structure is adjusted so that the walking structure is not in contact with the base platform; after the bracket of the fourth assembly position is welded, the large-span structure of the fourth assembly position is assembled in situ; then after the brackets of the third assembly position, the second assembly position and the first assembly position are welded, the large-span structures of the corresponding positions are sequentially assembled; after the large-span structure of the first assembly position is assembled, the bracket of the fourth assembly position is separated from the large-span structure; then the landing support structure is adjusted so that the walking structure is in contact with the base platform; then the walking structure drives the reinforcing beam frame and the related connecting structure of the fourth assembly position to move to the splicing position of the next large-span structure, so that the walking structure is separated from the base platform, and the next large-span structure is spliced; then after the large-span structures of the third assembly position, the second assembly position and the first assembly position are completely stable, the walking mechanisms of the corresponding positions are sequentially moved to the splicing positions of the next large-span structures, and the large-span structures are spliced; thereby effectively reducing the construction period; the four walking mechanisms and the connecting structures, the assembly supports and the brackets on the upper side move back and forth under the large-span structure, the steps of repeatedly disassembling the scaffold are avoided, and the construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a front elevation view of the overall assembly construction of the sliding trolley for large-span structure construction of the present application.

[0027] Figure 2 It is a front elevation view of the combined platform.

[0028] Figure 3 It is a side elevation view of the combined platform.

[0029] Figure 4 It is a front elevation view of the assembly support.

[0030] Figure 5 It is Figure 2 It is an enlarged view of A in FIG.

[0031] Figure 6 It isFigure 2 Enlarged view at B;

[0032] Figure 7 For Figure 3 Enlarged view at C.

[0033] The reference signs in the figures respectively represent:

[0034] 1, combined platform; 11, spliced upper chord; 12, vertical web; 13, inclined web; 14, spliced lower chord; 15, horizontal web; 16, flange plate; 17, stand column I; 18, distribution beam I; 19, reinforcing beam frame; 2, assembly support; 21, stand column II; 22, connecting rod; 23, distribution beam II; 24, horizontal rod; 3, walking mechanism; 31, moving wheel I; 32, moving wheel II; 33, slide; 34, lateral support; 35, pre-embedded part; 36, leveling pad; 37, lifting jack; 38, lifting support platform. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0036] In the following description, "left", "right", "front", "back", "up", "down" are oriented in the perspective of the front view.

[0037] Embodiment one: in some embodiments, please refer to the accompanying drawings of the specification Figures 1-7 A sliding trolley for large-span structure construction, comprising a combined platform 1; further comprising an assembly support 2 and a walking mechanism 3;

[0038] The first assembly position, the second assembly position, the third assembly position and the fourth assembly position are sequentially arranged from left to right on the base;

[0039] The combined platform 1 is provided with four groups, and the four groups of combined platforms 1 are respectively located on the four assembly positions;

[0040] The combined platform 1 comprises a spliced upper chord 11, a spliced lower chord 14, a reinforcing beam frame 19 and a plurality of connecting support structures; the spliced upper chord 11 and the spliced lower chord 14 are connected through a plurality of connecting support structures; a plurality of distribution beams I 18 are uniformly and fixedly installed on the spliced upper chord 11 at equal intervals, and a plurality of assembly supports 2 are installed on the distribution beams I 18; the spliced lower chord 14 and the reinforcing beam frame 19 are connected through a plurality of connecting support structures; a plurality of walking mechanisms 3 are installed on the lower side of the reinforcing beam frame 19;

[0041] The walking mechanism 3 comprises a guide support structure, a walking structure and a landing support structure, the walking structure is installed on the lower side of the reinforced beam frame 19, the guide support structure is fixedly installed on the base by bolts, and the walking structure is connected with the guide support structure; a plurality of groups of landing support structures are uniformly installed on the base at equal intervals in the middle of the reinforced beam frame 19.

[0042] The overall width of the combined platform 1 at the fourth assembling position is smaller than that of the combined platform 1 at the other assembling positions.

[0043] The inclined support structure is arranged on the left side of the upper support structure at the first assembling position, and the inclined support structures are arranged on both sides of the upper support structure at the second assembling position; the adjacent inclined support structures are arranged in a staggered manner.

[0044] By arranging the adjacent inclined support structures in a staggered manner, adaptive adjustment can be made according to the large-span length;

[0045] The bracket 2 is provided with a bracket for supporting the large-span structure on the top.

[0046] In the embodiment, when the large-span structure construction sliding trolley is normally working, the guide support structures are sequentially installed on the base in the direction from the fourth assembling position to the first assembling position, the plurality of groups of walking structures are limited to slide on the guide support structures, the reinforced beam frame 19, the connecting support structure, the spliced lower chord 14 and the spliced upper chord 11 are sequentially welded on the walking structures, the bracket for supporting the large-span structure is welded on the spliced upper chord 11, then the landing support structures are welded on the base and the reinforced beam frame 19, and the landing support structures are adjusted so that the walking structures are not in contact with the base;

[0047] After the bracket at the fourth assembling position is welded, the large-span structure at the fourth assembling position is assembled in situ; then after the brackets at the third assembling position, the second assembling position and the first assembling position are welded, the large-span structures at the corresponding positions are sequentially assembled;

[0048] After the large-span structure at the first assembling position is assembled, the bracket at the fourth assembling position is separated from the large-span structure; then the landing support structures are adjusted so that the walking structures are in contact with the base; then the reinforced beam frame 19 and the related connecting structure at the fourth assembling position are moved to the splicing position of the next large-span structure by the walking structure, so that the walking structure is separated from the base, and the next large-span structure is spliced; then after the large-span structures at the third assembling position, the second assembling position and the first assembling position are completely stable, the walking structures at the corresponding positions are sequentially moved to the splicing position of the next large-span structure, and the large-span structure is spliced; thereby the construction period is effectively reduced;

[0049] By utilizing four sets of walking structures, the upper connecting structure, the assembled support 2, and the brackets to move back and forth under the large-span structure, the repeated disassembly and reassembly of the scaffolding is avoided, thus improving construction efficiency.

[0050] Example 2: In some embodiments, such as Figures 1-7 As shown, the connecting support structure includes vertical web members 12, diagonal web members 13, horizontal web members 15, flanges 16, and columns 17. Three sets of columns 17 are provided, and flanges 16 are fixedly installed at the ends of columns 17. Bolts pass through adjacent flanges 16 and are tightened with nuts. The upper column 17 is welded to the spliced ​​upper chord 11 and spliced ​​lower chord 14, the middle column 17 is welded to the horizontal web member 15, and the lower column 17 is welded to the reinforcing beam frame 19. Multiple sets of vertical web members 12 and diagonal web members 13 are welded between the spliced ​​upper chord 11 and the spliced ​​lower chord 14. Multiple sets of diagonal web members 13 are welded between the spliced ​​lower chord 14 and the middle column 17. Multiple sets of diagonal web members 13 are welded between the horizontal web member 15 and the lower column 17.

[0051] The guide support structure includes an embedded part 35 and a slide rail 33; the embedded part 35 is fixedly installed on the base platform along a direction perpendicular to the large span structure; the slide rail 33 is detachably installed on the embedded part 35 by bolts.

[0052] The walking structure includes a movable support base, movable wheel 31 and movable wheel 32. Multiple sets of movable support bases are symmetrically fixedly installed on the underside of the reinforcing beam frame 19. Movable wheel 31 driven by a geared motor is rotatably installed on one set of movable support bases. A drive structure for driving movable wheel 31 is installed on the movable support base. Movable wheel 32 is rotatably installed on the remaining movable support bases.

[0053] The drive structure includes a geared motor, a sprocket, and a chain. The geared motor is fixedly mounted on a movable support base. The sprocket is fixedly connected to the movable wheel 31 and meshes with the chain. The sprockets are driven by the chain. The output end of the geared motor is fixedly connected to one of the sprockets.

[0054] The lifting support structure includes a pad 36, lifting jacks 37, lifting support platforms 38, and lateral supports 34. Multiple sets of lifting support platforms 38 are evenly and uniformly fixedly installed in the middle of the reinforcing beam 19. Lifting jacks 37 for supporting the lifting support platforms 38 are symmetrically distributed on both sides of the lifting support platforms 38. The lifting jacks 37 are detachably installed on the base platform by bolts. Multiple sets of lateral supports 34 are symmetrically fixedly installed at the bottom of the side columns 17. After the lifting jacks 37 lift the reinforcing beam 19 and the connecting structure through the lifting support platforms 38, a pad 36 is placed between the bottom of the middle column 17 and the base platform, and a pad 36 is placed between the bottom of the lateral supports 34 and the base platform.

[0055] The assembling support 2 comprises column two 21, connecting rod 22, distribution beam two 23 and cross bar 24, a plurality of column two 21 and connecting rod 22 are welded, column two 21 is welded on distribution beam one 18; the upper portion of column two 21 is welded with distribution beam two 23; distribution beam two 23 is welded with cross bar 24 on it;

[0056] Cross bar 24 is welded with bracket.

[0057] Embodiment three: in some embodiments, as shown, as a preferred embodiment of the present application, a large-span structure construction method, comprising the following steps: Figures 1-7

[0058] Step one: on the base, in the direction from the fourth assembling position to the first assembling position, sequentially install the guide support structure, make a plurality of groups of walking structures limit sliding on the guide support structure, sequentially weld the reinforcing beam frame 19, the connecting support structure, the spliced lower chord 14 and the spliced upper chord 11 on the walking structure; weld the bracket for supporting the large-span structure on the spliced upper chord 11; then weld the take-off support structure on the base and the reinforcing beam frame 19, and adjust the take-off support structure so that the walking structure is not in contact with the base;

[0059] Step two: after the bracket of the fourth assembling position is welded, the large-span structure of the fourth assembling position is assembled in situ; then after the brackets of the third assembling position, the second assembling position and the first assembling position are welded, the assembling of the large-span structures of the corresponding positions is sequentially completed;

[0060] Step three: after the large-span structure of the first assembling position is assembled, the bracket of the fourth assembling position is separated from the large-span structure; then adjust the take-off support structure so that the walking structure is in contact with the base; then drive the reinforcing beam frame 19 of the fourth assembling position and the related connecting structure to move to the splicing position of the next large-span structure through the walking structure, so that the walking structure is separated from the base, and the next large-span structure is spliced; then after the large-span structures of the third assembling position, the second assembling position and the first assembling position are completely stable, the walking structures of the corresponding positions are sequentially moved to the splicing position of the next large-span structure for splicing of the large-span structure.

[0061] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.​

Claims

1. A sliding trolley for construction of large-span structures, comprising a modular platform (1), characterized in that: It also includes an assembly support frame (2) and a walking mechanism (3); The modular platform (1) is provided in four sets, and the four sets of modular platforms (1) are located at four assembly positions respectively; The modular platform (1) includes a splicing upper chord (11), a splicing lower chord (14), a reinforcing beam frame (19), and multiple sets of connecting support structures; the splicing upper chord (11) and the splicing lower chord (14) are connected by multiple sets of connecting support structures; multiple sets of distribution beams (18) are evenly fixedly installed on the splicing upper chord (11) at equal intervals, and multiple sets of assembly brackets (2) are installed on the distribution beams (18); the splicing lower chord (14) and the reinforcing beam frame (19) are connected by multiple sets of connecting support structures; multiple sets of walking mechanisms (3) are installed on the underside of the reinforcing beam frame (19); The traveling mechanism (3) includes a guide support structure, a traveling structure and a lifting support structure. The traveling structure is installed on the underside of the reinforced beam frame (19). The guide support structure is fixedly installed on the base platform by bolts. The traveling structure is connected to the guide support structure. Multiple sets of lifting support structures are evenly installed at equal intervals on the middle part of the reinforced beam frame (19) and the base platform.

2. The sliding trolley for large-span structure construction according to claim 1, characterized in that, The top of the assembly bracket (2) is equipped with a bracket for supporting the large-span structure.

3. The sliding trolley for large-span structure construction according to claim 2, characterized in that, The connecting support structure includes vertical web members (12), diagonal web members (13), horizontal web members (15), flanges (16), and column one (17). Column one (17) has three sets, and flanges (16) are fixedly installed at the ends of column one (17). Bolts pass through adjacent flanges (16) and are tightened with nuts. The upper column one (17) is welded to the spliced ​​upper chord (11) and spliced ​​lower chord (14), and the middle column one (17)... The upper chord (11) and the lower chord (14) are welded together; the lower column (17) is welded together with the reinforcing beam (19); multiple sets of vertical web members (12) and diagonal web members (13) are welded between the spliced ​​upper chord (11) and the spliced ​​lower chord (14); multiple sets of diagonal web members (13) are welded between the spliced ​​lower chord (14) and the middle column (17); multiple sets of diagonal web members (13) are welded between the horizontal web member (15) and the lower column (17).

4. The sliding trolley for large-span structure construction according to claim 3, characterized in that, The guide support structure includes an embedded part (35) and a slide rail (33); the embedded part (35) is fixedly installed on the base platform in a direction perpendicular to the large span structure; the slide rail (33) is detachably installed on the embedded part (35) by bolts.

5. The sliding trolley for large-span structure construction according to claim 4, characterized in that, The walking structure includes a movable support base, movable wheel one (31) and movable wheel two (32). Multiple sets of movable support bases are symmetrically fixedly installed on the underside of the reinforced beam frame (19). Movable wheel one (31) driven by a geared motor is rotatably installed on one set of movable support bases, and movable wheel two (32) is rotatably installed on the remaining movable support bases.

6. The sliding trolley for large-span structure construction according to claim 5, characterized in that, The lifting support structure includes a pad (36), a lifting jack (37), a lifting support platform (38), and lateral supports (34). Multiple sets of lifting support platforms (38) are evenly and uniformly fixed in the middle of the reinforcing beam (19). Lifting jacks (37) for supporting the lifting support platform (38) are symmetrically distributed on both sides of the lifting support platform (38). The lifting jacks (37) are detachably installed on the base platform by bolts. Multiple sets of lateral supports (34) are symmetrically fixed at the bottom of the first column (17) located on the side. After the lifting jacks (37) lift the reinforcing beam (19) and the connecting structure through the lifting support platform (38), a pad (36) is placed between the bottom of the first column (17) in the middle and the base platform. A pad (36) is also placed between the bottom of the lateral supports (34) and the base platform.

7. The sliding trolley for large-span structure construction according to claim 6, characterized in that, The assembly bracket (2) includes two uprights (21), connecting rods (22), two distribution beams (23) and crossbars (24). Multiple uprights (21) and connecting rods (22) are welded together. The uprights (21) are welded onto the first distribution beam (18). The second distribution beam (23) is welded onto the upper part of the uprights (21). The crossbars (24) are welded onto the second distribution beam (23).

8. A construction method for large-span structures, utilizing the sliding trolley for large-span structure construction as described in claim 3, characterized in that, Includes the following steps: Step 1: Install the guide support structure on the base in sequence from the fourth assembly position to the first assembly position, so that multiple sets of walking structures can slide at the upper limit of the guide support structure. Weld the reinforcing beam frame (19), connecting support structure, splicing lower chord (14) and splicing upper chord (11) on the walking structure in sequence. Weld the bracket for supporting the large span structure on the splicing upper chord (11). Then weld the lifting support structure on the base and the reinforcing beam frame (19), and adjust the lifting support structure so that the walking structure does not contact the base. Step 2: After the bracket of the fourth assembly position is welded, the large-span structure of the fourth assembly position is assembled in situ; then, after the brackets of the third, second and first assembly positions are welded, the large-span structure of the corresponding positions is assembled in sequence. Step 3: After the large-span structure of the first assembly position is assembled, the bracket of the fourth assembly position is detached from the large-span structure; then the lifting support structure is adjusted to make the traveling structure contact the base. Then, the walking structure drives the reinforced beam frame (19) and related connecting structures of the fourth assembly position to the splicing point of the next large-span structure, so that the walking structure is separated from the base and the next large-span structure is spliced; then, after the large-span structures of the third assembly position, the second assembly position and the first assembly position are completely stable, the walking structures of the corresponding positions are moved to the splicing point of the next large-span structure in sequence to splice the large-span structure.

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