CN116163228A - Segment splicing method for large-section steel tower bridge - Google Patents

Abstract

The invention relates to the technical field of bridges, and provides a segment splicing method for a large-section steel tower bridge, which comprises the following steps: welding a plurality of front side plates, a bottom web plate, a middle web plate, a rear side plate and a partition plate into a plurality of first box bodies by using a long wire method, and forming a plurality of first anchor box installation cavities in each first box body; welding a plurality of first anchor boxes in a corresponding first anchor box installation cavity in a one-to-one correspondence manner according to a first set measurement reference; welding a plurality of first top webs on the first box body in a one-to-one correspondence manner so as to splice a plurality of first sections; wherein, first section is two room structures of single case all. The consistency of the first sections of the plurality of first anchor boxes relative to the plurality of single-box double-chamber structures is ensured, so that the assembly errors among the sections are sufficiently reduced, the adjustment time of the assembly errors in the stage is reduced, the section manufacturing and splicing time of the large-section steel tower bridge is reduced, and the corresponding cost is reduced.

Description

Segment splicing method for large-section steel tower bridge

Technical Field

The invention relates to the technical field of bridges, in particular to a segment splicing method for a large-section steel tower bridge.

Background

In the prior art, the steel truss girder bridge is a structural form of a solid steel plate girder bridge according to a certain rule and a hollow mode, and the structure is a girder stress mode as a whole so as to bear bending moment and shearing force. Comprises a bridge deck, a support, a bridge pier and the like.

On the other hand, the existing large-section steel tower bridge is generally constructed by splicing a plurality of sections together. However, the segments are generally built in a mode of splicing one by one on site, and particularly the segments with a single-box double-chamber structure have low construction efficiency, large assembly errors among the segments, and huge manufacturing and splicing costs of the segments due to the fact that the assembly errors of the segments are required to be adjusted.

Disclosure of Invention

The invention aims to solve the problem of huge manufacturing and splicing costs of the segments of the existing large-section steel tower bridge.

In order to solve the problems, the invention provides a segment splicing method for a large-section steel tower bridge, which comprises the following steps:

welding a plurality of front side plates, a bottom web plate, a middle web plate, a rear side plate and a partition plate into a plurality of first box bodies by using a long wire method, and forming a plurality of first anchor box installation cavities in each first box body;

welding a plurality of first anchor boxes in a corresponding first anchor box installation cavity in a one-to-one correspondence manner according to a first set measurement reference;

welding a plurality of first top webs on the first box body in a one-to-one correspondence manner so that the first box bodies are spliced into a plurality of corresponding first sections;

wherein, first section is two room structures of single case all.

Optionally, the welding the plurality of front side plates, the bottom web, the middle web, the rear side plates, and the partition plate into the plurality of first boxes with the first set measurement standard using the long line method includes:

welding a plurality of front side plates, bottom webs, middle webs, rear side plates and partition plates on a first jig frame into N first boxes, and enabling N-1 first boxes to be connected in sequence, wherein the N first boxes are arranged adjacent to the N-1 first boxes;

the welding of the plurality of top webs on the first box body in a one-to-one correspondence mode further comprises the following steps:

transferring the Nth first box body to a second jig frame;

welding a front side plate, a bottom web plate, a middle web plate, a rear side plate and a baffle plate of M second sections on a second jig frame by taking an N-th first box body as a reference to form M second box bodies, sequentially connecting the N-th first box body with M-1 second box bodies, arranging the M-th second box body with the M-1 second box bodies, and simultaneously forming a plurality of second anchor box installation cavities in each second box body;

establishing a second set measurement reference according to the first anchor box in the Nth first box body;

welding a plurality of second anchor boxes in the second anchor box installation cavities of the corresponding M second boxes according to the second set measurement standard;

welding a plurality of second top webs on the second box body in a one-to-one correspondence manner so as to splice a plurality of second sections;

wherein, the second sections are of a single-box double-chamber structure.

Optionally, the welding of the front side plate, the bottom web, the middle web, the rear side plate and the partition plate of the N first segments on the first jig frame into N-1 first boxes connected in sequence is to connect the N-1 first boxes by using a plurality of horse plates.

Optionally, after welding the front side plate, the bottom web, the middle web, the rear side plate and the partition plate of the N first segments to N-1 sequentially connected first boxes on the first jig, the method further includes:

welding N-1 welding seams among the first box bodies which are connected in sequence;

and removing the plurality of horse plates between the N-1 first box bodies which are connected in sequence.

Optionally, the welding the plurality of front side plates, the bottom web, the middle web, the rear side plates and the partition plate into the plurality of first boxes by using the long line method, and forming a plurality of first anchor box installation cavities in each of the first boxes includes:

sequentially paving a plurality of bottom webs on a first jig frame, and respectively marking positioning lines of a front side plate, a middle web plate, a rear side plate and a plurality of partition plates of the first section on the plurality of bottom webs;

positioning and welding a plurality of the partition boards on the bottom web plate into a first row of partition board groups according to the positioning lines of the partition boards;

positioning and welding the middle web plate on the bottom web plate according to the positioning line of the middle web plate;

positioning and welding a plurality of the partition boards on the bottom web to form a second row of partition board groups according to positioning lines of the partition boards, and arranging the middle web between the first row of partition board groups and the second row of partition board groups;

positioning and welding the front side plate on the bottom web plate according to the positioning line of the front side plate, and arranging the first row of partition plate groups between the front side plate and the middle web plate;

and positioning and welding the rear side plate on the bottom web plate according to the positioning line of the rear side plate, and arranging the second row of partition plate groups between the middle web plate and the rear side plate.

Optionally, welding the first anchor boxes before the first anchor boxes are welded in the corresponding first anchor box installation cavities in a one-to-one correspondence manner according to the first set measurement standard;

welding the first anchor box includes:

welding the two side webs, the two stiffening plates and the bearing plates together, and enclosing the two side webs and the two stiffening plates into an anchor pipe accommodating space so that the bearing plates cover the two side webs and the two stiffening plates;

welding an anchor pipe in the anchor pipe accommodating space;

and placing an anchor backing plate on the bearing plate, and welding the anchor backing plate and the anchor pipe together.

Optionally, the welding the two side webs, the two stiffening plates, and the bearing plate together includes:

drawing two stiffening plate mounting lines on the same side plate surface of one side web plate;

drawing two side web plate mounting lines on the plate surface of the bearing plate;

according to the two stiffening plate mounting lines, positioning and welding the two stiffening plates on the same side plate surface of one side web plate at intervals;

positioning and welding the bearing plate, one side web plate and two stiffening plates together according to the stiffening plate mounting line;

welding a weld between the bearing plate and one of the side webs;

welding seams among the two stiffening plates, the bearing plate and one side web plate;

drawing two stiffening plate mounting lines on the same side plate surface of the other side web plate;

positioning and welding the other side web plate and the two stiffening plates;

and welding seams among the two stiffening plates, the bearing plate and the other side web plate.

Optionally, after the two side webs, the two stiffening plates and the bearing plate are welded together, the method further includes:

and welding two flange plates at the bottoms of the corresponding side webs.

Optionally, the welding the plurality of first anchor boxes in the corresponding first anchor box installation cavity in a one-to-one correspondence manner based on the first set measurement reference includes:

marking corresponding anchor points and anchor box installation system lines in the first anchor box and the first anchor box installation cavity respectively by using a total station according to the first set measurement reference;

installing a plurality of first anchor boxes in corresponding first anchor box installation cavities in a one-to-one correspondence manner according to the anchor points and anchor box installation system lines;

detecting and keeping the size of each first anchor box consistent;

and welding a weld joint between each first anchor box and the bottom web.

Optionally, the welding the plurality of first top webs to the first box in a one-to-one correspondence includes:

fixedly welding a plurality of first top webs on the corresponding first box body in a one-to-one correspondence manner;

welding three welding seams among the front side plate, the middle web plate and the rear side plate and the first top web plate;

welding a weld joint between the first anchor box and the first top web in the first box;

and welding a plurality of welding seams between the first anchor boxes and the corresponding front side plate and rear side plate.

Compared with the prior art, the invention has the following technical effects:

when the segment splicing method is used for splicing the segments of the large-section steel tower bridge, a plurality of front side plates, bottom webs, middle webs, rear side plates and partition plates are welded into a plurality of first boxes by using a long wire method; the first box bodies of the first sections are spliced at the same time, so that the manufacturing efficiency of the sections is improved, the consistency of splicing and positioning of the first box bodies is guaranteed, and particularly, the consistency of splicing and positioning of corresponding first anchor box installation cavities is guaranteed in the process of splicing the first box bodies, the welding accuracy of welding the subsequent first anchor boxes in the corresponding first anchor box installation cavities is guaranteed, and the assembly errors of the first sections are reduced; more importantly, a plurality of first anchor boxes are welded in the corresponding first anchor box installation cavities in a one-to-one correspondence mode according to a first set measurement standard, and the consistency of the first anchor boxes relative to the first sections of the single-box double-chamber structure is guaranteed, so that assembly errors among the sections are sufficiently reduced, adjustment time of the assembly errors in the stages is reduced, manufacturing and splicing time of the sections of the large-section steel tower bridge is reduced, and corresponding cost is reduced. The method solves the problem of huge manufacturing and splicing costs of the segments of the existing large-section steel tower bridge.

Drawings

FIG. 1 is a schematic flow chart of the main steps of the segment splicing method for large section steel tower bridges of the present invention;

FIG. 2 is a flow chart of a process for welding a plurality of first cases by using a long wire method according to the present invention;

FIG. 3 is a schematic flow chart of a segment splicing method for a large section steel tower bridge of the present invention;

FIG. 4 is a flow chart of the steps of welding a plurality of first anchor boxes in a corresponding first anchor box installation cavity in a one-to-one correspondence manner;

FIG. 5 is a flow chart of the steps of welding a plurality of first top webs to a first box in a one-to-one correspondence manner according to the present invention;

FIG. 6 is a schematic flow chart of the steps of welding a first anchor box according to the present invention;

FIG. 7 is a schematic perspective view of a first segment stitching process in accordance with an embodiment of the present invention;

FIG. 8 is another schematic perspective view of a first segment stitching process in an embodiment of the present invention;

FIG. 9 is yet another schematic perspective view of a first segment splicing process in an embodiment of the present invention;

FIG. 10 is a schematic perspective view of a first anchor box stitching process in accordance with an embodiment of the present invention;

FIG. 11 is another schematic perspective view of a first anchor box stitching process in an embodiment of the present invention;

FIG. 12 is yet another schematic perspective view of a first anchor box stitching process in an embodiment of the present invention;

FIG. 13 is a schematic diagram of welding and assembling N first boxes on a first jig frame in an embodiment of the invention;

fig. 14 is a schematic view of welding and assembling an nth first box and M second boxes on a second jig in an embodiment of the present invention.

Reference numerals illustrate: 100. a first segment; 110. a front side plate; 120. a bottom web; 130. a middle web; 140. a rear side plate; 150. a partition plate; 160. a first anchor box; 170. a first top web; 180. a first anchor box mounting cavity; 200. a second segment; 210. a second anchor box; 300. a first jig frame; 400. a second jig frame; 500. a first setting measurement reference; 600. setting a measurement reference; 710. a side web; 720. stiffening plates; 730. a pressure bearing plate; 740. flange plates; 750. an anchor backing plate; 760. an anchor tube; 770. the anchor tube is accommodated in the space.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or illustrated embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.

In the drawings of the specification, the Z axis represents the vertical direction, that is, the up-down direction, and the positive direction of the Z axis (that is, the arrow of the Z axis points) represents the negative direction of the Z axis (that is, the direction opposite to the positive direction of the Z axis); the Y-axis in the drawings represents the front-to-back direction; the X-axis in the drawing represents the left-right direction; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented, configured or operated in a particular orientation, and therefore should not be construed as limiting the invention.

Referring to fig. 1 to 14, to solve the above technical problems, the present embodiment provides a segment splicing method for a large-section steel tower bridge, including:

s100, welding a front side plate 110, a bottom web 120, a middle web 130, a rear side plate 140 and a partition plate 150 of a plurality of first sections 100 into a plurality of first boxes by using a long line method, and forming a plurality of first anchor box installation cavities 180 in each first box;

s200, welding a plurality of first anchor boxes 160 in a corresponding first anchor box installation cavity 180 in a one-to-one correspondence manner by using a first set measurement reference 500;

s300, welding a plurality of first top webs 170 on the first box body in a one-to-one correspondence manner so as to splice a plurality of first sections 100;

wherein the first segments 100 are each of a single-box, double-chamber construction.

When the segment splicing method of the present invention is used to splice segments of a large-section steel tower bridge, the front side plate 110, the bottom web 120, the middle web 130, the rear side plate 140 and the partition plate 150 of the plurality of first segments 100 are welded into a plurality of first boxes by using a long line method; the first boxes of the first sections 100 are spliced at the same time, so that the manufacturing efficiency of the sections is improved, the consistency of splicing and positioning of the first boxes is ensured, particularly, the consistency of splicing and positioning of the corresponding first anchor box installation cavities 180 is ensured in the process of splicing the first boxes, the welding accuracy of the subsequent first anchor boxes 160 in the corresponding first anchor box installation cavities 180 is ensured, and the assembly error of the first sections 100 is reduced; more importantly, the first anchor boxes 160 are welded in the corresponding first anchor box installation cavities 180 in a one-to-one correspondence manner by using the first set measurement standard 500, so that the consistency of the first anchor boxes 160 relative to the first sections 100 of the single-box double-chamber structure is ensured, the assembly errors among the sections are sufficiently reduced, the adjustment time of the assembly errors of the stages is reduced, the section manufacturing and splicing time of the large-section steel tower bridge is reduced, and the corresponding cost is reduced. The method solves the problem of huge manufacturing and splicing costs of the segments of the existing large-section steel tower bridge.

Referring to fig. 1, 3 to 14, further, S100, welding the front side plate 110, the bottom web 120, the middle web 130, the rear side plate 140, and the partition plate 150 of the plurality of first segments 100 with the first set measurement standard 500 using the long line method into a plurality of first cases includes:

s110, welding a plurality of front side plates 110, bottom webs 120, middle webs 130, rear side plates 140 and partition plates 150 on a first tire frame 300 into N-1 first boxes which are sequentially connected, wherein the N first boxes are arranged adjacent to the N-1 first boxes;

s300, after the plurality of top webs are welded on the first box body in a one-to-one correspondence manner, the method further comprises the following steps:

s410, transferring the Nth first box body to the second jig 400;

s420, welding the front side plate 110, the bottom web plate 120, the middle web plate 130, the rear side plate 140 and the partition plate 150 of the M second sections 200 on the second jig 400 by taking the N first boxes as references to form M second boxes, sequentially connecting the N first boxes with the M-1 second boxes, arranging the M second boxes with the M-1 first boxes, and simultaneously forming a plurality of second anchor box 210 installation cavities in each second box;

s430, establishing a second set measurement reference 600 according to the first anchor box 160 in the Nth first box body;

s440, welding a plurality of second anchor boxes 210 in second anchor box 210 mounting cavities of corresponding M second boxes according to a second set measurement standard 600;

s450, welding a plurality of second top webs on the second box body in a one-to-one correspondence manner so as to splice a plurality of second sections 200;

wherein the second sections 200 are each of a single-box, double-chamber construction.

The second section 200 and the first section 100 may be identical in structure here, except that the first section 100 and the second section 200 are different in size. Accordingly, the structures of the first and second cases may be identical, and only the sizes of the first and second cases are different.

The minimum of N can be 3, and the minimum of M can be 2.

Welding the front side plate 110, the bottom web plate 120, the middle web plate 130, the rear side plate 140 and the partition plate 150 of the N first sections 100 into N-1 first boxes which are sequentially connected, so that the assembly precision of the N-1 first boxes which are sequentially connected is improved; and the front side plate 110, the bottom web 120, the middle web 130, the rear side plate 140 and the partition plate 150 of the M second sections 200 are welded into M second boxes on the second jig 400 by taking the N first boxes as a reference, so that the assembly efficiency of the M second boxes is improved, the assembly precision of the M second boxes is improved, the N first boxes and the M-1 second boxes are sequentially connected, the assembly precision of the N first boxes and the M-1 second boxes is fully improved, and simultaneously the N first boxes and the N-1 sequentially connected first boxes are simultaneously spliced on the first jig 300, so that the splicing precision of the subsequent N-1 first boxes, the N first boxes and the M-1 second boxes is improved. This also results in a substantial improvement in the consistency of the respective first and second anchor box mounting cavities 180, 210.

In addition, the second set measurement standard 600 is established according to the first anchor boxes 160 in the nth first box body, and the plurality of second anchor boxes 210 are welded in the second anchor box 210 installation cavities of the corresponding M second box bodies according to the second set measurement standard 600, so that the consistency of the assembly of the first anchor boxes 160 in the N first sections 100 and the second anchor boxes 210 in the M second sections 200 is fully ensured, and the consistency of the anchor boxes in the plurality of sections in the assembly process is the key for reducing the assembly errors among the sections, and therefore, the purpose of reducing the assembly errors among the sections to the minimum is realized through the operation.

It should be noted that, the "mth second box is disposed adjacent to the mth-1 first box" herein, in order to weld the front side plate 110, the bottom web 120, the middle web 130, the rear side plate 140 and the partition plate 150 of the L third segments to L-1 third boxes connected in sequence on the third jig, and the corresponding specific steps may be referred to S410 to S450.

Referring to fig. 1, 3 to 14, further, S110, welding the front side plate 110, the bottom web 120, the middle web 130, the rear side plate 140 and the partition plate 150 of the N first segments 100 to N-1 sequentially connected first cases on the first jig 300 is to connect the N-1 first cases using a plurality of horse plates.

Referring to fig. 1 and 3, further, S110, after welding the front side plate 110, the bottom web 120, the middle web 130, the rear side plate 140 and the partition plate 150 of the N first sections 100 to N-1 sequentially connected first boxes on the first jig 300, further includes:

s121, welding N-1 welding seams among the first box bodies which are sequentially connected;

s122, removing the plurality of horse boards among the N-1 first boxes which are connected in sequence.

In this embodiment, the N-1 first boxes are temporarily connected by using the horse plates, so that the first boxes are connected in the manufacturing process, the assembly efficiency of the N-1 first segments 100 is improved, then the N-1 first segments 100 are used as the connection positioning reference, the welding seams between the N-1 sequentially connected first boxes are welded, and finally the plurality of horse plates between the N-1 sequentially connected first boxes are removed, thereby improving the butt joint accuracy of the N-1 first segments 100.

Referring to fig. 2, further, S100, welding the front side plate 110, the bottom web 120, the middle web 130, the rear side plate 140, and the partition 150 of the plurality of first segments 100 into a plurality of first cases using an elongated method, and forming a plurality of first anchor case mounting cavities 180 in each of the first cases includes the steps of:

s111, sequentially laying a plurality of bottom webs 120 on the first tire frame 300, and respectively marking positioning lines of the front side plate 110, the middle web 130, the rear side plate 140 and the partition plate 150 of the first section 100 on the plurality of bottom webs 120;

s112, positioning and welding a plurality of the partition boards 150 on the bottom web 120 into a first row of partition board groups according to the positioning lines of the partition boards 150;

s113, positioning and welding the middle web 130 on the bottom web 120 according to the positioning line of the middle web 130;

s114, positioning and welding a plurality of partition boards 150 on the bottom web 120 into a second row of partition board groups according to positioning lines of the partition boards 150, and arranging the middle web 130 between the first row of partition board groups and the second row of partition board groups;

s115, positioning and welding the front side plate 110 on the bottom web 120 according to the positioning line of the front side plate 110, and arranging a first row of partition plate groups between the front side plate 110 and the middle web 130;

and S116, positioning and welding the rear side plate 140 on the bottom web 120 according to the positioning line of the rear side plate 140, and arranging a second row of partition plates between the middle web 130 and the rear side plate 140.

It should be noted that, the long line method herein refers to assembling a plurality of first boxes on the first jig 300 at the same time, for example, after the step S111 is performed on N first boxes, the step S112 is continuously performed on N first boxes, the step S113 is continuously performed on N first boxes, the step S114 is performed on N first boxes, the step S115 is performed on N first boxes, and the step S116 is finally performed on N first boxes, thereby completing the welding assembly of the plurality of first boxes using the long line method.

In this way, the plurality of first cases are assembled by welding step by step in accordance with the foregoing steps S111 to S116 using the long line method so that the plurality of first cases are assembled by welding step by step, so that each of the foregoing steps S111 to S116 is continuously repeatedly performed N times, and as each step is repeatedly performed, the proficiency of each step is improved so that the efficiency of each step being continuously repeatedly performed N times is higher than the efficiency of the steps S111 to S116 being performed in assembling the first cases one by one, thereby improving the assembling speed of the plurality of first cases.

And the corresponding steps S111 to S116 are performed step by step according to the positioning lines of the corresponding front side plate 110, the middle web 130, the rear side plate 140 and the partition plate 150 to assemble a plurality of first boxes, so that the synchronous assembly consistency of the plurality of first boxes is ensured, the synchronous assembly accuracy of the first boxes is improved, and the assembly quality of the first boxes is improved.

Referring to fig. 6, further, S200 further includes welding the first anchor boxes 160 before welding the plurality of first anchor boxes 160 in the corresponding first anchor box installation cavity 180 in a one-to-one correspondence with the first set measurement reference 500;

s500, welding the first anchor box 160 includes:

s510, welding the two side webs 710, the two stiffening plates 720 and the bearing plates 730 together, and enclosing the two side webs 710 and the two stiffening plates 720 into an anchor pipe accommodating space 770, so that the bearing plates 730 cover the two side webs 710 and the two stiffening plates 720;

s520, welding the anchor tube 760 in the anchor tube receiving space 770;

s530, placing the anchor backing plate 750 on the bearing plate 730, and welding the anchor backing plate 750 with the anchor tube 760.

It should be noted that, the welding of the first anchor boxes 160 in S500 herein may also be performed before the welding of the plurality of front side plates 110, the bottom web 120, the middle web 130, the rear side plates 140, and the partition plates 150 into the plurality of first boxes using the long line method in S100, as long as the "welding of the plurality of first anchor boxes 160 in the corresponding first anchor box installation cavities 180 in one-to-one correspondence with the first set measurement standard 500 in S200" can be satisfied.

Referring to fig. 6, further, S510 welding together two side webs 710 and two stiffening plates 720 and bearing plates 730 includes:

s511, drawing two stiffening plate mounting lines on the same side plate surface of one side web plate 710;

s512, drawing two side web mounting lines on the plate surface of the bearing plate 730;

s513, positioning and welding the two stiffening plates 720 on the same side plate surface of one side web plate 710 at intervals according to the two stiffening plate mounting lines;

s514, positioning and welding the bearing plate 730, one side web 710 and two stiffening plates 720 together according to stiffening plate mounting lines;

s515, welding a welding seam between the bearing plate 730 and one side web 710;

s516, welding the welding seams among the two stiffening plates 720, the bearing plate 730 and one side web 710;

s517, drawing two stiffening plate mounting lines on the same side plate surface of the other side web 710;

s518, positioning and welding the other side web 710 and the two stiffening plates 720;

s519, welding the weld between the two stiffening plates 720, the bearing plate 730 and the other side web 710.

The accuracy of the welding of each first anchor box 160 is ensured by the drawing of a plurality of different mounting lines. Thus, the splicing efficiency of the first anchor box 160 is improved.

Referring to fig. 6, further, after the two side webs 710, the two stiffening plates 720 and the bearing plate 730 are welded together, S510 further includes:

s5101 welds two flange plates 740 to the bottom of the respective side webs 710.

With S5101, the bottom of the side web 710 is further prevented from being deformed. The structural stability of the first anchor housing 160 is improved.

It should be noted that, the bearing plates 730 are disposed on top of the two side webs 710 and the two stiffening plates 720, and the two flange plates 740 are welded on the bottom of the corresponding side webs 710.

The two side webs 710 are disposed in parallel and the two stiffening plates 720 are disposed in parallel, with the two stiffening plates 720 sandwiched between the two side webs 710.

A through hole is formed in the plate surface of the bearing plate 730, the anchor pipe 760 is inserted into the through hole, and the anchor pad 750 is placed on the bearing plate 730.

The first anchor box 160 assembled by the S510 to S530 has high structural strength and strong deformation resistance.

Referring to fig. 4, further, S200 welding a plurality of first anchor boxes 160 in a corresponding first anchor box installation cavity 180 in a one-to-one correspondence with the first set measurement reference 500 includes:

s210, marking corresponding anchor points and anchor box installation system lines in the first anchor box 160 and the first anchor box installation cavity 180 by using a total station according to the first set measurement reference 500;

s220, installing a plurality of first anchor boxes 160 in corresponding first anchor box installation cavities 180 in a one-to-one correspondence manner according to the anchor points and the anchor box installation system lines;

s230, detecting and keeping the size of each first anchor box 160 consistent;

s240, welding a weld between each first anchor box 160 and the bottom web 120.

The installation accuracy of the first anchor box 160 is improved using S220 and S230. The matching degree of the first anchor box 160 and the first box body is improved, the first anchor box 160 and the first box body are firmly fixed by utilizing the S240, the connection efficiency with the S220 and the S230 is improved by utilizing the S210, the installation accuracy is ensured, and meanwhile, the installation fixing efficiency of the first anchor box 160 is improved, so that the installation convenience of the first anchor box 160 is stronger.

Referring to fig. 5, further, S300 welding the plurality of first top webs 170 to the first box in a one-to-one correspondence includes:

s310, fixedly welding a plurality of first top webs 170 on corresponding first box bodies in a one-to-one correspondence manner;

s320, welding three welding seams among the front side plate 110, the middle web 130 and the rear side plate 140 and the first top web 170;

s330, welding seams between an anchor box 160 and a first top web 170 in the first box body Shi Handi;

s340, welding a plurality of welding seams between the front side plate 110 and the rear side plate 140 of the first anchor boxes 160.

Through S310 to S340, the accuracy of welding and fixing the first top web 170 and the first box body is improved, so that the stability and reliability of the last procedure of segment splicing are ensured, and the quality of segment welding is improved.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.

Claims (10)

1. A segment splicing method for a large-section steel tower bridge, comprising:

welding a plurality of front side plates (110), a bottom web plate (120), a middle web plate (130), a rear side plate (140) and a partition plate (150) into a plurality of first box bodies by using a long line method, and forming a plurality of first anchor box installation cavities (180) in each first box body;

welding a plurality of first anchor boxes (160) in a corresponding first anchor box installation cavity (180) in a one-to-one correspondence manner by using a first set measurement reference (500);

welding a plurality of first top webs (170) to the first boxes in a one-to-one correspondence to splice the plurality of first boxes into a corresponding plurality of first segments (100);

wherein the first segments (100) are each of a single-box double-chamber construction.

2. The segment stitching method of claim 1, wherein the welding the plurality of front side panels (110), bottom webs (120), intermediate webs (130), rear side panels (140), and bulkheads (150) into the plurality of first boxes using a long line process comprises:

welding a plurality of front side plates (110), bottom webs (120), middle webs (130), rear side plates (140) and partition plates (150) on a first tire frame (300) to form N first boxes, and sequentially connecting N-1 first boxes, wherein the N first boxes are arranged adjacent to the N-1 first boxes;

the welding of the plurality of top webs on the first box body in a one-to-one correspondence mode further comprises the following steps:

transferring an nth of said first boxes to a second jig (400);

welding a front side plate (110), a bottom web plate (120), a middle web plate (130), a rear side plate (140) and a partition plate (150) of M second sections (200) on a second jig (400) by taking an Nth first box body as a reference to form M second box bodies, sequentially connecting the Nth first box body with M-1 second box bodies, arranging the Mth second box body with the M-1 second box bodies, and simultaneously forming a plurality of second anchor box installation cavities in each second box body;

establishing a second set measurement reference (600) from the first anchor box (160) within the nth first box;

welding a plurality of second anchor boxes (210) in the second anchor box installation cavities of the corresponding M second boxes according to the second set measurement standard (600);

welding a plurality of second top webs on the second box body in a one-to-one correspondence manner so as to splice a plurality of second sections (200);

wherein the second sections (200) are of a single-box double-chamber structure.

3. The segment stitching method according to claim 2, wherein the welding of a plurality of front side plates (110), bottom webs (120), intermediate webs (130), rear side plates (140) and partitions (150) to N-1 sequentially connected first boxes on a first carcass (300) is connecting N-1 first boxes using a plurality of horse plates.

4. A segment stitching method according to claim 3, wherein said welding a plurality of front side panels (110), bottom webs (120), intermediate webs (130), rear side panels (140) and baffles (150) to said first frame (300) in N-1 sequentially connected boxes further comprises:

welding N-1 welding seams among the first box bodies which are connected in sequence;

and removing the plurality of horse plates between the N-1 first box bodies which are connected in sequence.

5. The segment stitching method of claim 1 wherein welding the plurality of front side plates (110), bottom webs (120), intermediate webs (130), rear side plates (140), and bulkheads (150) into a plurality of first boxes using an elongated wire method and forming a plurality of first anchor box mounting cavities (180) in each of the first boxes comprises:

sequentially laying a plurality of bottom webs (120) on a first tire frame (300), and respectively marking positioning lines of a front side plate (110), a middle web (130), a rear side plate (140) and a partition plate (150) of the first section (100) on the plurality of bottom webs (120);

positioning and welding a plurality of the partition boards (150) on the bottom web (120) into a first row of partition board groups according to positioning lines of the partition boards (150);

positioning and welding the middle web (130) on the bottom web (120) according to the positioning line of the middle web (130);

positioning welding a plurality of said spacers (150) on said bottom web (120) as a second row of spacer groups according to the positioning lines of said spacers (150) with said intermediate web (130) interposed between said first row of spacer groups and said second row of spacer groups;

positioning and welding the front side plate (110) on the bottom web (120) according to the positioning line of the front side plate (110), and arranging the first row of partition plates between the front side plate (110) and the middle web (130);

and positioning and welding the rear side plate (140) on the bottom web (120) according to the positioning line of the rear side plate (140), and arranging the second row of partition plates between the middle web (130) and the rear side plate (140).

6. The segment splicing method according to any one of claims 1 to 5, characterized in that,

the first anchor boxes (160) are welded in a one-to-one correspondence manner by using a first set measurement reference (500) before the first anchor boxes are welded in the corresponding first anchor box installation cavity (180), and the first anchor boxes (160) are welded;

said welding said first anchor box (160) comprises:

welding the two side webs (710), the two stiffening plates (720) and the bearing plates (730) together, and enclosing the two side webs (710) and the two stiffening plates (720) into an anchor pipe accommodating space (770), so that the bearing plates (730) cover the two side webs (710) and the two stiffening plates (720);

welding an anchor tube (760) within the anchor tube receiving space (770);

an anchor pad (750) is placed on the bearing plate (730) and the anchor pad (750) and the anchor tube (760) are welded together.

7. The segment stitching method of claim 6, wherein welding the two side webs (710), the two stiffening plates (720), and the bearing plate (730) together comprises:

drawing two stiffening plate mounting lines on the same side plate surface of one side web plate (710);

drawing two side web mounting lines on the plate surface of the bearing plate (730);

positioning and welding two stiffening plates (720) on the same side plate surface of one side web plate (710) at intervals according to the two stiffening plate mounting lines;

positioning and welding together the bearing plate (730), one of the side webs (710) and two of the stiffening plates (720) according to the stiffening plate mounting line;

welding a weld between the bearing plate (730) and one of the side webs (710);

welding a weld between two of the stiffening plates (720), the bearing plate (730) and one of the side webs (710);

drawing two stiffening plate mounting lines on the same side plate surface of the other side web plate (710);

-tack welding the other of said side webs (710) and both of said stiffening plates (720);

welding seams between the two stiffening plates (720), the bearing plate (730) and the other side web (710) are welded.

8. The segment stitching method according to claim 6, wherein the welding together of the two side webs (710), the two stiffening plates (720) and the bearing plates (730) further comprises:

two flange plates (740) are welded to the bottom of the respective side web (710).

9. The segment splicing method according to any one of claims 1 to 5, characterized in that,

the welding of a plurality of first anchor boxes (160) in a corresponding first anchor box installation cavity (180) in a one-to-one correspondence manner with a first set measurement reference (500) comprises:

marking corresponding anchor points and anchor box installation system lines in the first anchor box (160) and the first anchor box installation cavity (180) respectively by using a total station according to the first set measurement reference (500);

installing a plurality of first anchor boxes (160) in a corresponding first anchor box installation cavity (180) in a one-to-one correspondence manner according to the anchor points and the anchor box installation system lines;

detecting and maintaining the dimensions of each of said first anchor boxes (160) uniform;

-welding a weld between each of the first anchor boxes (160) and the bottom web (120).

10. The segment stitching method according to claim 9, wherein the welding of the plurality of first top webs (170) to the first box in a one-to-one correspondence comprises:

fixedly welding a plurality of first top webs (170) to the corresponding first boxes in a one-to-one correspondence manner;

welding three welds between the front side plate (110), the middle web (130), and the rear side plate (140) and the first top web (170);

-welding a weld between the first anchor box (160) and the first top web (170) within the first box;

-welding a plurality of welds between the first anchor boxes (160) and the corresponding front side plate (110) and rear side plate (140).

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