Splicing method of steel pipe arch truss

Abstract

The invention provides an assembling method of a steel pipe arch truss, and relates to the technical field of steel pipe arch trusses. The method comprises the steps that a bottom web is laid along a standard line, and the bottom web is used for being connected between two steel pipes of the same section; arranging a plurality of partition plates in parallel along the standard line, and vertically clamping the plurality of partition plates with the bottom web plate; the two steel pipes are symmetrically arranged relative to the multiple partition plates, and the multiple partition plates are clamped and positioned between the two steel pipes; and the sizes of welding seams between the bottom web and the two steel pipes are checked correspondingly, and pre-welding is conducted. The axial precision of each steel pipe can be ensured by checking the size of the welding seam between each steel pipe and the bottom web, so that the influence of the axial precision of each steel pipe on the splicing precision is reduced, and the splicing precision of the steel pipe arch truss is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel tube arch trusses, and in particular to an assembling method of steel tube arch trusses. Background Art

[0002] Each arch rib truss of the steel tube arch is composed of four steel tubes. The two steel tubes of the upper chord and the lower chord are connected as a whole through connecting plates, and the upper and lower chords are connected by web bars to form a truss. The two arch ribs are connected as a whole through flat joints to form an arch ring. The steel tubes of the arch rib chord and the steel tubes of the transverse connection between the arch ribs are all connected by full welding; the arch rib web bars and the chord bars are connected by high-strength bolts.

[0003] At present, the assembly accuracy of the two steel pipes of the upper chord and the lower chord affects the linear trend of the entire truss, especially when the connecting parts of the upper and lower chords are not in the same plane during assembly or there is a deviation in the connection angle, which will greatly reduce the assembly accuracy of the steel pipe arch truss. Summary of the invention

[0004] The problem solved by the invention is how to improve the assembly accuracy of the steel tube arch truss.

[0005] In order to solve the above problems, the present invention provides a method for assembling a steel tube arch truss, comprising:

[0006] Laying a bottom web along the standard line, wherein the bottom web is used to connect two steel pipes in the same section;

[0007] Arrange a plurality of partitions in parallel along the standard line, and vertically engage the plurality of partitions with the bottom web;

[0008] The two steel pipes are symmetrically arranged about the plurality of partitions, and the plurality of partitions are engaged and positioned between the two steel pipes;

[0009] The weld sizes between the bottom web and the two steel pipes are respectively checked and pre-welded.

[0010] Optionally, the assembly method of the steel tube arch truss further includes:

[0011] Laying the top web along the standard line;

[0012] The top web is vertically engaged with the ends of the plurality of partitions away from the bottom web to obtain a pre-assembled segment of the steel tube arch truss;

[0013] The weld sizes between the top web of the pre-assembled segment and the two steel pipes are checked respectively.

[0014] Optionally, the assembly method of the steel tube arch truss further includes:

[0015] Before laying the bottom web along the standard line, the method further includes:

[0016] Divide the bottom web into two symmetrical first webs along the standard line;

[0017] Dividing the top web into two symmetrical second webs along the standard line;

[0018] Divide each of the partitions into two symmetrical first partitions along the standard line;

[0019] After respectively checking the weld sizes between the top web of the pre-assembled segment and the two steel pipes, the method further includes:

[0020] The first partition plate, the first web plate and the second web plate assembled together are synchronously transported to the assembly site together with the corresponding steel pipes.

[0021] Optionally, the assembly method of the steel tube arch truss further includes:

[0022] At the assembly site, the two separated parts of each partition are bolted together.

[0023] Optionally, the adjacent ends of the two first partitions are respectively provided with multiple rows of positioning holes, and the two first partitions are bolted via the multiple rows of positioning holes.

[0024] Optionally, a plurality of partition positioning lines are provided on the bottom belly plate, and each partition is positioned and installed on a corresponding partition positioning line.

[0025] Optionally, the assembly method of the steel tube arch truss further includes:

[0026] Check the alignment of the top web.

[0027] Optionally, the assembly method of the steel tube arch truss further includes: checking the verticality of each of the partitions and the bottom web.

[0028] Optionally, after verifying the weld size between the top web of the segment and the two steel pipes, the method further includes:

[0029] The ends of the web members are bolted to the joint plates of the steel pipes, and then the joint plates are pre-welded to the steel pipes.

[0030] Optionally, the process of bolting the end of the web member to the joint plate of the steel pipe includes:

[0031] A plurality of stacked pads are built below the web bar to support the web bar.

[0032] Compared with the related art, the assembly method of the steel tube arch truss of the present invention lays the bottom web between two steel tubes connected to the same segment along the standard line, so that the linear shape of the bottom web is consistent with the standard line, so that the bottom web can provide a reference for the installation of multiple partitions, and then, multiple partitions arranged in parallel along the standard line are vertically engaged with the bottom web, and an interlocking fixation is formed between the multiple partitions and the bottom web, so that under the locking of the bottom web, the multiple partitions can be strictly arranged according to the standard line, thereby ensuring the installation accuracy of the multiple partitions, and then, through two steel tubes about the multiple partitions The plates are symmetrical and are respectively engaged and positioned with multiple partitions. The two steel pipes can be at the same height under the support of multiple partitions to preliminarily realize the positioning of the two steel pipes. Then, by respectively checking the weld sizes between the bottom web and the two steel pipes and pre-welding, the weld width between each steel pipe and the bottom web can directly reflect the parallelism of each steel pipe and the bottom web, and then the axial accuracy of each steel pipe can be guaranteed by checking the weld size between each steel pipe and the bottom web, thereby reducing the influence of the axial accuracy of each steel pipe on the assembly accuracy, thereby improving the assembly accuracy of the steel pipe arch truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a flowchart of a method for assembling a steel tube arch truss in an embodiment of the present invention;

[0034] Figure 2 It is a schematic diagram of laying the bottom web along the standard line in an embodiment of the present invention;

[0035] Figure 3 It is a schematic diagram of a plurality of partitions vertically clamped on the bottom web in an embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of a plurality of partitions vertically engaging with a single steel pipe in an embodiment of the present invention;

[0037] Figure 5 It is a schematic diagram of a plurality of partitions vertically engaging with two steel pipes in an embodiment of the present invention;

[0038] Figure 6 Schematic diagram of the installation of the top web in an embodiment of the present invention;

[0039] Figure 7 is a schematic diagram of the connection between the web member and the joint plate in an embodiment of the present invention;

[0040] Figure 8 is a schematic structural diagram of a partition in an embodiment of the present invention;

[0041] Fig. 9 It is a schematic diagram of separate transportation of the first baffle, the first web, the second web and the corresponding steel pipes in an embodiment of the present invention;

[0042] Fig.10 It is a structural schematic diagram of a steel tube arch truss in the related art.

[0043] Description of reference numerals:

[0044] 1-bottom web; 2-steel pipe; 3-partition; 31-first partition; 32-positioning hole; 4-web member; 5-joint plate; 6-top web; 10-upper chord; 20-lower chord. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] In the accompanying drawings, the X-axis represents the horizontal position, and the positive direction of the X-axis (that is, the direction in which the arrow of the X-axis points) represents the right side, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the left side; in the accompanying drawings, the Y-axis represents the front-back position, and the positive direction of the Y-axis (that is, the direction in which the arrow of the X-axis points) represents the front side, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the rear side; in the accompanying drawings, the Z-axis represents the vertical position, and the positive direction of the Z-axis (that is, the direction in which the arrow of the Z-axis points) represents the upper side, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the lower side. It should also be noted that the aforementioned X-axis, Y-axis, and Z-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0048] In related technologies, such as Fig.10 As shown, the steel tube arch truss includes an upper chord 10 and a lower chord 20 extending along the line of the steel tube arch truss, and a web 4 connected between the upper chord 10 and the lower chord 20. The upper chord 10 and the lower chord 20 both include segments connected in sequence along the line of the steel tube arch truss, each segment includes two steel tubes 2 (chord tubes) and two webs connected between the two steel tubes 2, wherein the web includes a bottom web and a top web arranged in parallel.

[0049] At present, due to factors such as the linear shape of the steel pipe, the assembly accuracy of the two steel pipes of the upper chord and the lower chord, the connection manufacturing matching accuracy of the steel pipe arch truss is poor. In order to solve the above problems, an assembly method of a steel pipe arch truss is provided in an embodiment of the present invention, which sequentially improves the shape accuracy of the steel pipe, the assembly accuracy of the steel pipe and the web, and the assembly accuracy of the upper chord and the lower chord.

[0050] Combination Figures 1 to 5 As shown, the present invention provides a method for assembling a steel tube arch truss, comprising:

[0051] Step 1: Lay the bottom web 1 along the standard line, and the bottom web 1 is used to connect two steel pipes 2 in the same section;

[0052] Step 2: Arrange multiple partitions 3 in parallel along the standard line, and vertically engage the multiple partitions 3 with the bottom web 1;

[0053] Step 3: symmetrically arrange the two steel pipes 2 about the plurality of partitions 3, and make the plurality of partitions 3 snap-fit ​​and position between the two steel pipes 2;

[0054] Step 4: respectively check the weld sizes between the bottom web 1 and the two steel pipes 2 and pre-weld them.

[0055] Specifically, the standard line refers to the actual axis line of the two steel pipes 2 required for any segment of the upper chord or lower chord, based on the actual required linear shape of the steel pipe arch truss. In this embodiment, the linear shape of the standard line can be a straight line, for example, the standard line can be a straight line parallel to the Y-axis direction. The tire frame can be assembled and installed on the ground, with the upper end of the tire frame kept horizontal, and after the standard line is drawn on the upper end of the tire frame, the bottom web 1 is laid on the tire frame along the standard line, that is, the bottom web 1 extends along the standard line, wherein the bottom web 1 is used to connect between the two steel pipes 2 in the same segment when assembled on site. Figure 2 As shown, after the bottom web 1 is laid along the standard line, a reinforcing rib is arranged at the upper end of the bottom web 1, the reinforcing rib is perpendicular to the bottom web 1, and the reinforcing rib extends along the standard line. Figure 3 As shown, prepare multiple partitions 3 (the shape of the partition 3 can refer to Figure 8 ), multiple partitions 3 are arranged in parallel along the standard line, and a slot is provided at the lower end of each partition 3. Each partition 3 is connected to the reinforcing rib on the bottom web 1 through the slot provided at the lower end, and each partition 3 is perpendicular to the bottom web 1. Under the limitation of the bottom web 1, multiple partitions 3 can be fixed on the bottom web 1 to form a support frame for the steel pipe 2, and each partition 3 is provided with arc grooves at both ends perpendicular to the reinforcing rib, that is, each partition 3 can be symmetrically provided with arc grooves at both ends in the X-axis direction, and the two arc grooves match the arc surface shapes of the outer walls of the two steel pipes 2 respectively. Figure 4 and Figure 5As shown, two steel pipes 2 are respectively arranged vertically with multiple partitions 3, and the outer wall of each steel pipe 2 is engaged with the arc groove on one side so that the two steel pipes 2 are symmetrical about the multiple partitions 3, and the axes of the two steel pipes 2 are located at the same height to avoid the different heights of the two steel pipes 2 affecting subsequent inspections. Then, under the support and positioning of multiple partitions 3, the weld sizes between the bottom web 1 and the two steel pipes 2 are checked respectively. Since the bottom web 1 is welded to the two steel pipes 2 respectively during splicing, after the two steel pipes 2 are supported by multiple partitions 3, the weld sizes between the bottom web 1 and each steel pipe 2 at any position can be checked to ensure the accuracy of the steel pipes 2. Therefore, the assembly method of the steel pipe arch truss in the embodiment of the present invention is applicable to at least the following situations: if the weld width between a single steel pipe 2 and the bottom web 1 is uniform and has no obvious difference, it can be judged that the current steel pipe 2 is parallel to the bottom web 1, that is, the axis of the current steel pipe 2 is parallel to the standard line; or, there is no obvious difference in the welds between each steel pipe 2 and the bottom web 1, but when the weld width between one steel pipe 2 and the bottom web 1 is greater than or less than the weld width between the other steel pipe 2 and the bottom web 1, the wall thickness of the steel pipe 2 with a larger weld may be too thin, which may affect the accuracy of the subsequent web rod connection, and the steel pipe 2 needs to be re-prepared.

[0056] Therefore, in this embodiment, the bottom web 1 between the two steel pipes 2 connected to the same segment is laid along the standard line, so that the linear shape of the bottom web 1 is consistent with the standard line, so that the bottom web 1 can provide a reference for the installation of multiple partitions 3, and then, the multiple partitions 3 arranged in parallel along the standard line are vertically engaged with the bottom web 1, and the multiple partitions 3 are interlocked with the bottom web 1. Therefore, under the locking of the bottom web 1, it is ensured that the multiple partitions 3 can be strictly arranged according to the standard line, thereby ensuring the installation accuracy of the multiple partitions 3, and then, the two steel pipes 2 are symmetrical about the multiple partitions 3 and are respectively connected to the multiple partitions 3. The partitions 3 are engaged and positioned, and the two steel pipes 2 can be at the same height under the support of multiple partitions 3 to preliminarily realize the positioning of the two steel pipes 2, and then by respectively checking the weld sizes between the bottom web 1 and the two steel pipes 2 and pre-welding, the weld width between each steel pipe 2 and the bottom web 1 can directly reflect the parallelism of each steel pipe 2 and the bottom web 1, and then the axial accuracy of each steel pipe 2 can be guaranteed by checking the weld size between each steel pipe 2 and the bottom web 1, thereby reducing the influence of the axial accuracy of each steel pipe 2 on the assembly accuracy, thereby improving the assembly accuracy of the steel pipe arch truss.

[0057] Optionally, the assembly method of the steel tube arch truss further includes:

[0058] Lay the top web 6 along the standard line;

[0059] The top web 6 is vertically engaged with the ends of the plurality of partitions 3 away from the bottom web 1 to obtain a pre-assembled segment of the steel tube arch truss;

[0060] The weld sizes between the top web 6 of the pre-assembled segment and the two steel pipes 2 are checked respectively.

[0061] Specifically, after checking the weld size between the bottom web 1 and the two steel pipes 2 and pre-welding, the top web 6 is installed. Figure 6 As shown, the size of the top web 6 is consistent with that of the bottom web 1, the top web 6 is located above the bottom web 1, and the end of the top web 6 facing the bottom web 1 is also provided with a reinforcing rib. The top web 6 is laid along the standard line and vertically engaged with the ends of multiple partitions 3 away from the bottom web 1 to obtain a pre-assembled segment of the steel tube arch truss. The weld sizes between the top web 6 and the two steel pipes 2 of the pre-assembled segment are checked respectively, and the linear accuracy of the top web 6 is checked by the weld widths between the top web 6 and the two steel pipes 2, such as in the following cases: If the weld widths between the top web 6 and the two steel pipes 2 are inconsistent, the size of the top web 6 is adjusted to make the weld widths between the top web 6 and the two steel pipes 2 consistent.

[0062] In this way, by laying the top web 6 along the standard line; vertically snapping the top web 6 and the ends of the multiple partitions 3 away from the bottom web 1 to obtain the pre-assembled segment of the steel tube arch truss, the positioning of the top web 6 can be achieved, so that the top web 6 can be parallel to the bottom web 1, thereby ensuring the parallelism of the top web 6 and the bottom web 1, and then by respectively checking the weld sizes between the top web 6 and the two steel pipes 2, the width of the top web 6 can be checked to achieve the verification of the shape accuracy of the top web 6. At the same time, the bottom web 1 can also assist in achieving a secondary verification of the axial accuracy of the two steel pipes 2, so as to ensure the accuracy of the top web 6 in the subsequent assembly process, thereby improving the assembly accuracy of the steel tube arch truss.

[0063] Optionally, the assembly method of the steel tube arch truss further includes:

[0064] Before laying the bottom web 1 along the standard line, it also includes:

[0065] Divide the bottom web 1 into two symmetrical first webs along the standard line;

[0066] Divide the top web 6 into two symmetrical second webs along the standard line;

[0067] Each partition 3 is divided into two symmetrical first partitions 31 along the standard line;

[0068] After respectively checking the weld sizes between the top web 6 of the pre-assembled segment and the two steel pipes 2, the following steps are also included:

[0069] The assembled first partition plate 31 , the first web plate and the second web plate are synchronously transported to the assembly site together with the corresponding steel pipes 2 .

[0070] Specifically, before laying the bottom web 1 along the standard line, the bottom web 1, the top web 6 and the plurality of partitions 3 are divided into two parts along the standard line of the pre-assembled segment, so as to facilitate the subsequent transportation of the pre-assembled segment to the assembly site. That is to say, in each pre-assembled segment, the bottom web 1 includes two parts that are symmetrical about the standard line of the segment, and the top web 6 and each partition 3 also include two parts that are symmetrical about the standard line of the segment. The two parts of the bottom web 1 are named the first web, the two parts of the top web 6 are named the second web, and the two parts of the partition 3 are named the first partition 31. Figure 8 As shown, each partition 3 includes two first partitions 13, and the two first partitions 31 are symmetrical about the standard line. The bottom web 1 and the top web 6 are respectively divided into two symmetrical first webs and two second webs along the standard line. In the pre-assembly stage, the two first webs are laid flat and fitted, and reinforcing ribs are respectively arranged on each first web. The lower ends of the two first partitions 31 are respectively vertically clamped with the two first webs through the reinforcing ribs, and the two ends of the two first partitions 31 that are far away from each other are respectively vertically clamped with the two steel pipes 2, and the upper ends of the two first partitions 31 are respectively vertically clamped with the two second webs, and the two steel pipes 2 are symmetrically arranged about the multiple partitions 3 and pre-welded with the webs to complete the pre-assembly of the segment. Afterwards, for the steel pipes 2 that have passed the assembly accuracy inspection, they are assembled together with the first partition plate 31, the first web plate and the second web plate and then transported to the steel pipe arch truss assembly site. At the assembly site, the corresponding two first web plates and the two second web plates can be welded to complete the assembly of the two steel pipes 2 in the same segment.

[0071] In this way, in the pre-assembly stage in the factory, before laying the bottom web 1 along the standard line, the bottom web 1 is divided into two symmetrical first webs along the standard line; the top web 6 is divided into two symmetrical second webs along the standard line; each partition 3 is divided into two symmetrical first partitions 31 along the standard line, thereby realizing the block manufacturing of the bottom web 1, the top web 6 and each partition 3, so that after respectively checking the weld size between the top web 6 of the pre-assembled segment and the two steel pipes 2, the assembled first partition 31, the first web and the second web can be conveniently transported to the assembly site synchronously with the corresponding steel pipes 2 to realize the block transportation of the pre-assembled segment, and in the process of on-site assembly, the two parts of the bottom web 1 and the top web 6 are respectively welded to realize the assembly positioning of the two steel pipes 2, without the need for secondary positioning of the steel pipes 2 on site, so as to improve the on-site assembly efficiency of the steel pipes 2.

[0072] Optionally, at the assembly site, the two separated parts of each partition board 3 are bolted together.

[0073] Specifically, Figure 8As shown, after the two steel pipes 2 of the same section are transported to the assembly site, the two ends of the two first partitions 31 close to each other can be bolted together through a connecting plate to achieve the positioning of the weld between the two first webs and the weld between the two second webs, and then the two first webs and the two second webs can be welded respectively.

[0074] In this way, by bolting the two parts of each partition 3 after being separated at the assembly site, the positioning accuracy of the two parts of the partition 3 after being separated can be ensured, which will help to realize the positioning of the two parts of the bottom web 1 and the top web 6 after being separated at the assembly site later, so as to improve the positioning accuracy of the bottom web 1 and the top web 6, thereby improving the assembly accuracy.

[0075] Optionally, a plurality of rows of positioning holes 32 are respectively provided at the adjacent ends of the two first partitions 31 , and the two first partitions 31 are bolted together through the plurality of rows of positioning holes 32 .

[0076] Specifically, Figure 8 As shown, each first partition plate 31 is provided with multiple rows of positioning holes 32, and the multiple rows of positioning holes 32 are located at two ends of the two first partition plates 31 that are close to each other. The two first partition plates 31 are bolted together through the multiple rows of positioning holes 32. When connected, the multiple rows of positioning holes 32 on each first partition plate 31 can provide multiple force connection points, thereby ensuring the positioning accuracy of the two first partition plates 31.

[0077] In this way, multiple rows of positioning holes 32 are respectively provided at the adjacent ends of the two first partitions 31 , and the two first partitions 31 are bolted together through the multiple rows of positioning holes 32 . The multiple rows of positioning holes 32 can provide multiple connection points to improve the positioning accuracy of the two first partitions 31 .

[0078] Optionally, a plurality of partition positioning lines are provided on the bottom web 1, and each partition 3 is positioned and installed on a corresponding partition positioning line.

[0079] Specifically, each partition positioning line is drawn along the width direction of the bottom web 1, and a plurality of partition positioning lines are arranged at intervals along the extension direction of the bottom web 1, and each partition 3 is positioned and installed on the corresponding partition positioning line.

[0080] In this way, by providing a plurality of partition positioning lines on the bottom web 1 and positioning each partition 3 on the corresponding partition positioning line, the plurality of partition positioning lines can realize rapid positioning of the plurality of partitions 3 on the bottom web 1 to improve the installation efficiency of the partitions 3.

[0081] Optionally, the assembly method of the steel tube arch truss further includes:

[0082] Check the line shape of the top web 6.

[0083] Specifically, checking the linear shape of the top web 6 includes checking the parallelism of any two opposite end faces of the top web 6 , or the parallelism between the top web 6 and the bottom web 1 .

[0084] In this way, by checking the linear shape of the top web 6, it is possible to avoid the processing shape error of the top web 6 itself affecting the comparison of the weld width between the top web 6 and the two steel pipes 2, and it is also possible to avoid the parallel error between the top web 6 and the bottom web 1 and the comparison of the weld width between the top web 6 and the two steel pipes 2, so as to improve the use accuracy of the top web 6.

[0085] Optionally, the assembly method of the steel tube arch truss further includes: checking the verticality of each partition plate 3 and the bottom web 1.

[0086] Specifically, the verticality of each partition plate 3 and the bottom web 1 can be checked by a plumb bob method or a block.

[0087] In this way, the verticality of each partition 3 and the bottom web 1 is checked to avoid the vertical error between the partition 3 and the bottom web 1 affecting the vertical engagement between the steel pipe 2 and the partition 3, thereby avoiding the vertical error of the partition 3 affecting the positioning accuracy of the steel pipe 2.

[0088] Optionally, the assembly method of the steel tube arch truss further includes:

[0089] After checking the weld size between the top web 6 of the segment and the two steel pipes 2, it also includes:

[0090] The end of the web member 4 is bolted to the joint plate 5 of the steel pipe 2, and then the joint plate 5 and the steel pipe 2 are pre-welded.

[0091] Specifically, the web member 4 is connected between two steel pipes 2 of the same section of the upper chord member 10 and the lower chord member 20. After checking the weld size between the bottom web plate 1 and the two steel pipes 2 and pre-welding, a joint plate 5 needs to be welded on each steel pipe 2. If the joint plate 5 is first welded on the corresponding steel pipe 2 and then connected to the web member 4 at the assembly site, the joint plate 5 may be welded and deformed due to the first welding of the joint plate 5, which affects the connection accuracy of the joint plate 5 and the web member 4 in the subsequent connection process.

[0092] In this way, after checking the weld size between the top web 6 of the segment and the two steel pipes 2, the end of the web 4 is bolted to the joint plate 5 of the steel pipe 2, and then the joint plate 5 and the steel pipe 2 are pre-welded. It is only necessary to weld the joint plate 5 to the steel pipe 2 at the assembly site, so that the joint plate 5 can be pre-positioned, thereby improving the positioning accuracy of the joint plate 5 and the steel pipe 2.

[0093] Before transporting the web members 4 to the assembly site, the web members 4 and the joint plates 5 are disassembled, and then the web members 4 are transported to the assembly site separately with a single number, so as to facilitate the transportation of the web members 4 .

[0094] Optionally, the process of bolting the end of the web member to the joint plate of the steel pipe includes:

[0095] A plurality of stacked pads are built under the web bar 4 to support the web plate 1 .

[0096] Specifically, when assembling the belly bar 4, the belly bar 4 is laid flat, that is, parallel to the ground, and then a plurality of pads are stacked under the belly bar 4. The stacking height of the plurality of pads can be adjusted according to the height of the belly bar 4, and the width of the plurality of pads in the horizontal direction can be adjusted according to the distance between the upper chord and the lower chord.

[0097] In this way, by building a plurality of stacked pads under the web member 4 to support the web plate 1 , the assembly efficiency of the web member 4 can be improved.

[0098] In a specific embodiment, the specific process of the assembly method of the steel tube arch truss in the embodiment of the present invention is as follows: in the factory stage, the bottom web 1 is divided into two symmetrical first webs according to the standard line, such as Figure 2 As shown, the two first webs are laid flat and fitted along the standard line. Then, each partition 3 is divided into two symmetrical first partitions 31. After the two first partitions 31 of the same partition 3 are bolted together, the two rows of first partitions 31 and the bottom web 1 are vertically clamped along the standard line, as shown in FIG. Figure 3 As shown. Figure 4 and Figure 5 As shown, the two steel pipes 2 are symmetrical about the plurality of partitions 3, that is, the two steel pipes 2 are symmetrical about the standard line. First, a row of first partitions 31 on one side of the standard line is clamped with one steel pipe 2, and then a row of first partitions 31 on the other side of the standard line is clamped with another steel pipe 2 to complete the positioning of the two steel pipes 2. After the two steel pipes 2 are positioned, the weld size between the bottom web 1 and the two steel pipes 2 is checked. If qualified, the two steel pipes 2 can be pre-welded to the two parts of the bottom web 1 respectively. Figure 5As shown, a top web 6 is installed, and the top web 6 also includes two second webs that are symmetrical about the standard line. After the two parts of the top web 6 are respectively engaged with the two rows of first partitions 31, a pre-assembled segment is obtained, and the welds between the top web 6 and the two steel pipes 2 are inspected. If qualified, the bolting of the two first partitions 31 is released, and then the two second webs of the top web 6 are opened and closed on the two rows of first partitions 31, respectively, wherein a first web, a second web, a steel pipe 2 and multiple rows of first partitions 31 are a sub-segment, so that each pre-assembled segment can be divided into two symmetrical sub-segments for separate transportation, so as to realize the separate transportation of the pre-assembled segment. Before the pre-assembled segments are transported separately, each end of the web member 4 connecting the same segment of the upper chord 10 and the lower chord 20 can be bolted to the corresponding joint plate 5 in advance at the factory stage, and then the joint plate 5 is welded to the corresponding steel pipe 2, so as to realize the positioning of the joint plate 5 on the steel pipe 2, and the bolting between the joint plate 5 and the web member 4 is released after welding, and then the web member 4 is transported to the assembly site separately. After arriving at the assembly site, the two first partitions 31 of each partition 3 are bolted, and the positioning of the welds between the two first webs and the welds between the two second webs of the two sub-segments is completed at the same time, and then the two first webs and the two second webs are welded respectively to complete the assembly of one segment; thereafter, after the assembly of the upper chord 10 and the lower chord 20 is completed at the assembly site, the web member 4 is connected between the same segment of the upper chord 10 and the lower chord 20, thereby completing the connection of the upper chord 10 and the lower chord 20.

[0099] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A method for assembling a steel tube arch truss, characterized in that: include: Laying a bottom web along the standard line, wherein the bottom web is used to connect two steel pipes in the same section; Arrange a plurality of partitions in parallel along the standard line, and vertically engage the plurality of partitions with the bottom web; The two steel pipes are symmetrically arranged about the plurality of partitions, and the plurality of partitions are engaged and positioned between the two steel pipes; The weld sizes between the bottom web and the two steel pipes are respectively checked and pre-welded.

2. The method for assembling a steel tube arch truss according to claim 1, characterized in that: Also includes: Laying the top web along the standard line; The top web is vertically engaged with the ends of the plurality of partitions away from the bottom web to obtain a pre-assembled segment of the steel tube arch truss; The weld sizes between the top web of the pre-assembled segment and the two steel pipes are checked respectively.

3. The method for assembling a steel tube arch truss according to claim 2, characterized in that: Before laying the bottom web along the standard line, the method further includes: Dividing the bottom web into two symmetrical first webs along the standard line; Dividing the top web into two symmetrical second webs along the standard line; Divide each of the partitions into two symmetrical first partitions along the standard line; After respectively checking the weld sizes between the top web of the pre-assembled segment and the two steel pipes, the method further includes: The first partition plate, the first web plate and the second web plate assembled together are synchronously transported to the assembly site together with the corresponding steel pipes.

4. The method for assembling a steel tube arch truss according to claim 3, characterized in that: Also includes: At the assembly site, the two first partitions separated from each partition are bolted together, and the two first webs and the two second webs are welded respectively.

5. The method for assembling a steel tube arch truss according to claim 4, characterized in that: The adjacent ends of the two first partitions are respectively provided with multiple rows of positioning holes, and the two first partitions are bolted together through the multiple rows of positioning holes.

6. The method for assembling a steel tube arch truss according to claim 1, characterized in that: A plurality of partition positioning lines are arranged on the bottom belly plate, and each partition is positioned and installed on the corresponding partition positioning line.

7. The method for assembling a steel tube arch truss according to claim 2, characterized in that: Also includes: Check the alignment of the top web.

8. The method for assembling a steel tube arch truss according to claim 1, characterized in that: Also includes: Check the verticality of each of the partitions and the bottom web.

9. The method for assembling a steel tube arch truss according to claim 2, characterized in that: After verifying the weld size between the top web of the segment and the two steel pipes, the method further includes: The ends of the web members are bolted to the joint plates of the steel pipes, and then the joint plates are pre-welded to the steel pipes.

10. The method for assembling a steel tube arch truss according to claim 9, characterized in that: The process of bolting the end of the web member to the joint plate of the steel pipe includes: A plurality of stacked pads are built below the web bar to support the web bar.

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