阅读说明：本技术 一种框架柱与斜支撑连接节点结构及其施工方法 (Frame column and inclined support connecting node structure and construction method thereof ) 是由 吴迪 冯延军 于戈 于有为 赵兴龙 徐晓慧 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种框架柱与斜支撑连接节点结构及其施工方法,连接节点结构包含框架柱、垂直连接于框架柱上的横梁、连接在框架柱竖向上的转换板、以及连接于转换板上下两端的斜支撑；框架柱包含连接于转换板处的日字骨柱、呈矩形分布的柱板、以及连接于柱板内部、日字骨柱上下两端的十字骨柱；框架柱、转换板与斜支撑整体呈K形布置。施工时,通过转换板的设置,利于将框架柱和斜支撑便捷安装,且转换板中圆板的设计,便于斜支撑的轴接；通过转换板上挡板以及连接的搭接板的设置,利于框架柱内箍筋的搭接；此外,连板和加劲肋板的设计,有助于挡板的固定和承载；在连接节点日字骨柱加厚设计,保障了框架柱的连接性能和承力性能。(The invention discloses a frame column and inclined support connecting node structure and a construction method thereof, wherein the connecting node structure comprises a frame column, a cross beam vertically connected to the frame column, a conversion plate connected to the vertical direction of the frame column, and inclined supports connected to the upper end and the lower end of the conversion plate; the frame column comprises a Chinese character 'ri' shaped bone column connected to the conversion plate, a column plate in rectangular distribution and cross-shaped bone columns connected to the inner part of the column plate and the upper and lower ends of the Chinese character 'ri' shaped bone column; the frame column, the conversion plate and the inclined support are integrally arranged in a K shape. During construction, the arrangement of the conversion plate is beneficial to convenient installation of the frame column and the diagonal brace, and the design of a circular plate in the conversion plate is convenient for the shaft connection of the diagonal brace; the arrangement of the upper baffle of the conversion plate and the connected lap plate is beneficial to the lap joint of stirrups in the frame column; in addition, the design of the connecting plate and the stiffening rib plate is beneficial to fixing and bearing the baffle; the I-shaped bone column is thickened at the connecting node, so that the connecting performance and the bearing performance of the frame column are guaranteed.)

1. A frame column and diagonal bracing connecting node structure is characterized by comprising a frame column (1), a cross beam (6) vertically connected to the frame column (1), a conversion plate (2) vertically connected to the frame column (1), and diagonal braces (5) connected to the upper end and the lower end of the conversion plate (2);

the frame column (1), the conversion plate (2) and the inclined support (5) are integrally arranged in a K shape, and the frame column (1) comprises a Chinese character 'ri' shaped bone column (13) connected to the conversion plate (2), cross-shaped bone columns (12) connected to the upper end and the lower end of the Chinese character 'ri' shaped bone column (13) and column plates (11) which are distributed in a rectangular shape and connected to the outer sides of the cross-shaped bone columns (12);

the conversion plate (2) comprises a rectangular plate (21) connected with the frame column (1), circular plates (22) connected to the upper end and the lower end of the rectangular plate (21) and connecting shaft holes (23) respectively arranged on the two circular plates (22); the number of the conversion plates (2) is three, and the three conversion plates (2) are arranged in parallel; the connecting shaft holes (23) of the three conversion plates (2) are connected with the inclined supports (5) through inserting pin shafts (4);

the Chinese character 'ri' shaped bone pillar (13) comprises a square-shaped side bone pillar (132) and a horizontal bone pillar (131) connected to the inside of the square shape; the thickness of the lateral bone pillar (132) is larger than that of the pillar plate (11), and one side of the lateral bone pillar (132) is connected with the conversion plate (2);

rectangular plate (21) is connected with side bone post (132) in change-over panel (2), and rectangular plate (21) is connected with bridging plate (7) at setting up template (17) inboard, is connected with baffle (9) between adjacent change-over panel (2).

2. A frame post and diagonal bracing connecting node structure according to claim 1, wherein the connection reentrant corner of the rectangular plate (21) and the baffle (9) is connected with a connecting plate (8), and a stiffening rib plate is further connected between one side of the connecting plate (8) and the rectangular plate (21).

3. A frame post and diagonal bracing connecting node structure according to claim 1, wherein positioning ribs are provided between adjacent rectangular plates (21) at upper and lower ends, and the length of the positioning ribs is adapted to the design width of the adjacent rectangular plates (21); the top and the bottom of the adjacent rectangular plates (21) are respectively connected with a reinforcing strip plate.

4. A frame post and diagonal bracing connecting node structure according to claim 1, wherein the height of the i-shaped frame post (13) is adapted to the height of the conversion plate (2), and the inner corner of the side frame post (132) of the i-shaped frame post (13) connected with the rectangular plate (21) is connected with an angle piece, and a stiffening rib plate is connected on the angle piece.

5. A frame post and diagonal brace connection node structure according to claim 1, wherein said diagonal brace (5) is box section and two insert plates (3) are connected to the side connected to the conversion plate (2); the inserting plates (3) are arranged in parallel, and the thickness of the inserting plates (3) is adapted to the horizontal distance between the adjacent conversion plates (2).

6. A frame post and diagonal bracing connecting joint structure according to claim 1, wherein the frame post (1) further comprises vertical longitudinal bars (14), stirrups (15) connecting the vertical longitudinal bars (14), and tie bars (16) connected between the longitudinal bars (14); the longitudinal ribs (14) are arranged on the inner side of the baffle (9) at the position of the rectangular plate (21) at intervals, and the stirrups (15) are connected with the lap plate (7) at the position of the rectangular plate (21).

7. A frame post and diagonal bracing connection node structure according to claim 1, wherein the "japanese" bone post (13) and the rectangular plate (21) connected to the inside of the post plate (11) are each connected with a fixing member corresponding to the tie bar (16).

8. A frame post and diagonal bracing joint structure according to claim 1, wherein the top of the post plate (11) is connected with at least two and symmetrically arranged ear plates.

9. The construction method of the frame column and diagonal bracing connecting node structure according to any one of claims 1 to 8, characterized by comprising the following concrete steps:

step one, manufacturing a column plate (11), a cross-shaped bone column (12) and a Chinese character 'ri' bone column (13) according to the size of a frame column (1) at a designed K-shaped connecting node; designing and manufacturing a conversion plate (2) and an inserting plate (3) connected to one side of the inclined supports (5) according to the elevations of the two inclined supports (5); wherein, the shaft connecting holes (23) on the conversion plate (2) are arranged and manufactured together;

step two, welding cross bone columns (12) in the column plate (11), welding the column plate (11) and the cross bone columns (12) at two ends of the herringbone bone columns (13), and then welding the conversion plate (2) at the position of the herringbone bone columns (13); welding two plugboards (3) at one side of the inclined support (5), checking whether the thickness of the plugboard (3) and the width between the corresponding conversion boards (2) are suitable or not, and if not, adjusting in time;

thirdly, welding lug plates on the column plate (11) at the top end, and hoisting by using a truck crane; marking the horizontal elevation of the top of the column of the installed bottom frame and the position of the axis of the column in advance by using a marker pen; installing the lifted frame column (1) on the bottom frame column;

fourthly, after the installation and alignment are completed, correcting the verticality and the horizontal elevation by using a total station according to the coordinate position of the frame column (1); setting 4 direction coordinate points on the top of the frame column (1) to approve the verticality and the horizontal elevation respectively, and fixing four sides of the frame column (1) after the design value is reached;

step five, inserting an inclined support (5) with a plug board (3) on the conversion board (2) through a pin shaft (4), and fastening after approving the position; binding longitudinal bars (14), stirrups (15) and tie bars (16) around the frame column (1), and erecting a template (17); welding a lapping plate (7) at the joint of the conversion plate (2) and the template (17), and connecting stirrups (15) on the lapping plate (7);

sixthly, connecting a baffle (9) between the rectangular plates (21) of the adjacent conversion plates (2), and connecting a connecting plate (8) and a stiffening rib plate between the baffle (9) and the rectangular plate (21); and then, detecting the sealing performance of the whole template (17) and the joint thereof, completing erection after the design requirements are met, and finally pouring concrete.

10. The construction method of the frame column and diagonal bracing connecting node structure according to claim 9, characterized in that, before hoisting in the third step, the outline dimension of the component, the hole position and the hole diameter at the pin shaft (4), the appearance quality of the weld, the butt joint groove dimension and the gap size of the frame column (1) are mainly inspected, and the unqualified part is corrected and trimmed on the ground, and is installed after being qualified.

Technical Field

The invention belongs to the technical field of buildings, and particularly relates to a frame column and inclined support connecting node structure and a construction method thereof.

Background

In construction engineering, steel structural frames are an important frame form in building construction; the steel house frame has the advantages of easy installation and assembly time saving. The steel structure house frame is composed of steel frame columns, cross beams, inclined supports and other members. In the prior art, the inclined support is connected with the connecting node of the frame column mostly in a fixed manner, so that the construction operation and the installation and adjustment are inconvenient, and the strength of the connecting node is usually small, so that the pertinence design is required; in addition, in order to improve the bearing capacity and durability of the frame column, steel bars are often bound and concrete is often poured around the frame column, and therefore the requirement of later-stage template support needs to be met when the structure of the connecting point of the frame column and the inclined support is designed.

Disclosure of Invention

The invention provides a frame column and inclined support connecting node structure and a construction method thereof, which are used for solving the technical problems of conversion connection between a frame column and an inclined support, formwork support at the connecting node between the frame column and the inclined support, structural connection of the frame column at the connecting node and the like.

In order to achieve the purpose, the invention adopts the following technical scheme:

a frame column and diagonal bracing connecting node structure comprises a frame column, a cross beam vertically connected to the frame column, a conversion plate connected to the vertical direction of the frame column, and diagonal braces connected to the upper end and the lower end of the conversion plate;

the frame column, the conversion plate and the inclined support are integrally arranged in a K shape, and the frame column comprises a Chinese character 'ri' shaped bone column connected to the conversion plate, cross-shaped bone columns connected to the upper end and the lower end of the Chinese character 'ri' shaped bone column, and column plates which are distributed in a rectangular shape and connected to the outer sides of the cross-shaped bone columns;

the conversion plate comprises a rectangular plate connected with the frame column, circular plates connected to the upper end and the lower end of the rectangular plate and connecting shaft holes respectively arranged on the two circular plates; the number of the conversion plates is three, and the three conversion plates are arranged in parallel; the connecting shaft holes of the three conversion plates are connected with the inclined supports through inserting pin shafts;

the Chinese character 'ri' shaped bone pillars comprise side bone pillars in a shape of a square and horizontal bone pillars connected to the inside of the square; the thickness of the lateral bone column is greater than that of the column plate, and one side of the lateral bone column is connected with the conversion plate;

rectangular plate and side bone post are connected in the conversion board, and the rectangular plate is connected with the overlap joint board at the template inboard of setting up, is connected with the baffle between adjacent conversion board.

Furthermore, the connecting plate is connected at the connecting internal corner of the rectangular plate and the baffle, and a stiffening rib plate is connected between one side of the connecting plate and the rectangular plate.

Furthermore, positioning ribs are arranged between the upper end part and the lower end part of the adjacent rectangular plates, and the length of each positioning rib is adapted to the design width of the adjacent rectangular plate; the top and the bottom of the adjacent rectangular plates are respectively connected with a reinforcing lath.

Furthermore, the height of the U-shaped bone column is adapted to the height of the conversion plate, an angle piece is connected to the connection internal corner of the side bone column and the rectangular plate in the U-shaped bone column, and a stiffening rib plate is connected to the angle piece.

Furthermore, the inclined support is a box-shaped section, and one side of the inclined support, which is connected with the conversion plate, is connected with two inserting plates; the insertion plates are arranged in parallel, and the thickness of each insertion plate is adapted to the horizontal distance between the adjacent conversion plates.

Furthermore, the frame column also comprises vertical longitudinal ribs, stirrups connected with the vertical longitudinal ribs and tie bars connected between the longitudinal ribs; the longitudinal ribs are arranged on the inner side of the baffle at the rectangular plate at intervals, and the stirrups are connected with the lap plate at the rectangular plate.

Furthermore, the U-shaped bone pillar and the rectangular plate connected to the inside of the pillar plate are connected with fixing pieces correspondingly through lacing wires.

Further, the column plate top is connected with the otic placode, the otic placode is two at least and the symmetry sets up.

Further, the connection node structure of the frame column and the inclined support comprises the following specific steps:

step one, manufacturing a column plate, a cross-shaped bone column and a Chinese character 'ri' bone column according to the size of a frame column at a designed K-shaped connecting node; designing and manufacturing a conversion plate and an inserting plate connected to one side of the inclined supports according to the elevations of the two inclined supports; wherein, the connecting shaft holes on the conversion plate are arranged and manufactured together;

welding cross bone columns in the column plate, welding the column plate and the cross bone columns at two ends of the herringbone bone columns, and then welding a conversion plate at the position of the herringbone bone columns; welding two plugboards at one side of the inclined support, checking whether the thickness of the verification plugboard is proper or not and the width of the corresponding conversion board is proper or not, and adjusting in time if not;

step three, welding lug plates on the column plates at the top ends, and hoisting by using a truck crane; marking the horizontal elevation of the top of the column of the installed bottom frame and the position of the axis of the column in advance by using a marker pen; installing the lifted frame column on the bottom frame column;

fourthly, after the installation and alignment are completed, correcting the verticality and the horizontal elevation according to the coordinate position of the frame column by using a total station; setting 4 direction coordinate points on the top of the frame column to approve the verticality and the horizontal elevation respectively, and fixing the four sides of the frame column after the design value is reached;

step five, inserting an inclined support with a plug board on the conversion board through a pin shaft, and fastening after approving the position; binding longitudinal bars, stirrups and tie bars around the frame columns, and erecting a template; welding a lapping plate at the joint of the conversion plate and the template, and connecting stirrups on the lapping plate;

sixthly, connecting a baffle between the rectangular plates of the adjacent conversion plates, and connecting a connecting plate and a stiffening rib plate between the baffle and the rectangular plate; and then, detecting the sealing performance of the whole template and the joints thereof, completing erection after the design requirements are met, and finally pouring concrete.

Further, before hoisting in the third step, the outline dimension of the component, the hole position and the hole diameter of the pin shaft, the appearance quality of the welding seam, the size of the frame column butt joint groove, the size of the gap and the like are mainly inspected, and unqualified parts are corrected and trimmed on the ground and are installed after being qualified.

The invention has the beneficial effects that:

1) the frame column and the inclined support are conveniently and rapidly installed through the arrangement of the conversion plate, and the design of the circular plate in the conversion plate facilitates the coupling of the inclined support, so that the adjustment and the disassembly and assembly are facilitated;

2) according to the invention, through the arrangement of the upper baffle of the conversion plate and the connected lap plate, when a template is supported outside the frame column, the sealing at the connecting node and the lap joint of the stirrups in the frame column are facilitated; in addition, the design of the connecting plate and the stiffening rib plate is beneficial to fixing and bearing the baffle;

3) according to the invention, the cross-shaped bone columns are changed into the herringbone bone columns on the frame column sections of the connecting nodes, and the herringbone bone columns are thickened, so that the connecting performance and the bearing performance of the frame column are ensured;

in addition, the frame column and the conversion plate at the connecting joint section can be prefabricated, and the angle and the installation position of the inclined support can be adjusted according to the field condition during construction, so that the construction time can be greatly saved, and the installation quality can be ensured; additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.

Drawings

FIG. 1 is a frame post and diagonal brace connection node structure;

FIG. 2 is a schematic sectional view of a structure of a connecting joint of a frame column and a diagonal brace;

FIG. 3 is a schematic cross-sectional view of 1-1;

FIG. 4 is a schematic view of a conversion plate configuration;

FIG. 5 is a schematic cross-sectional view of 2-2;

FIG. 6 is a schematic cross-sectional view of FIG. 3-3;

FIG. 7 is a schematic cross-sectional view of 4-4;

FIG. 8 is a schematic cross-sectional view of 5-5;

FIG. 9 is a schematic view of the connection structure of the conversion plate and the lateral bone posts;

FIG. 10 is a schematic view of the connection structure of the conversion plate, the B-shaped bone pillar and the template.

Reference numerals: 1-frame column, 11-column plate, 12-cross column, 13-Japanese column, 131-horizontal column, 132-side column, 14-longitudinal bar, 15-stirrup, 16-lacing bar, 17-template, 2-conversion plate, 21-rectangular plate, 22-circular plate, 23-connecting shaft hole, 3-inserting plate, 4-pin shaft, 5-diagonal brace, 6-cross beam, 7-lap plate, 8-connecting plate and 9-baffle.

Detailed Description

Taking a certain building steel structure frame as an example, as shown in fig. 1 and 2, a joint structure of a frame column 1 and an inclined strut 5 includes the frame column 1, a cross beam 6 vertically welded to the frame column 1, a conversion plate 2 welded to the frame column 1 in the vertical direction, and the inclined strut 5 connected to the upper and lower ends of the conversion plate 2.

In this embodiment, the frame column 1, the conversion plate 2 and the diagonal brace 5 are all steel members, and the frame column 1, the conversion plate 2 and the diagonal brace 5 are integrally arranged in a K shape; the frame column 1 at the connection node comprises a herringbone frame column 13 connected to the conversion plate 2, a column plate 11 which is rectangular as shown in fig. 3, and cross frame columns 12 which are welded inside the column plate 11 and at the upper and lower ends of the herringbone frame column 13; wherein, the welding of column plate 11 top has the otic placode that is used for the hoist and mount, and the otic placode is two and symmetry setting at least.

In this embodiment, when mounting, the positioning ribs are welded between the upper end and the lower end of the adjacent conversion plates 2, and the length of the positioning ribs is adapted to the design width of the adjacent conversion plates 2; the positioning ribs are used for fixing the distance between the conversion plates 2 so as to meet the design width requirement; the top and the bottom of the adjacent conversion plate 2 are respectively welded with a reinforcing lath which is a steel lath for increasing the integrity of the conversion plate 2.

As shown in fig. 4, the conversion plate 2 includes a rectangular plate 21 welded to the frame column 1, circular plates 22 welded to and integrally formed at upper and lower ends of the rectangular plate 21, and coupling shaft holes 23 provided in the two circular plates 22, respectively; the rectangular plate 21 in the conversion plate 2 is vertically welded on the herringbone frame column 13; when the template 17 is erected, the lap plates 7 are welded on the inner sides of the rectangular plates 21 and the template 17, and the baffle plates 9 are welded between the adjacent conversion plates 2. Wherein, the position of baffle 9 adapts to other template 17 design positions, is convenient for pour jointly.

As shown in fig. 5 and 6, there are three conversion plates 2, and the three conversion plates 2 are arranged in parallel; the inclined strut 5 is a box-shaped section, and one side of the inclined strut 5 connected with the conversion plate 2 is connected with two inserting plates 3; the insertion plates 3 are arranged in parallel, and the thickness of the insertion plates 3 is suitable for the horizontal distance between the adjacent conversion plates 2. During construction, the connecting shaft holes 23 of the three conversion plates 2 are connected with the inclined supports 5 through inserting pin shafts 4, and round steel flitch plates are arranged between the pin shafts 4 and the conversion plates 2 for fastening connection; in this embodiment, the diameters of the pin shafts 4 required by the upper and lower connected diagonal braces 5 are 300mm and 400mm, and the pin shafts are respectively machined by adopting a machining mode.

As shown in fig. 7 and 10, the japanese-character-shaped bone pillar 13 includes a side bone pillar 132 in a square shape and a horizontal bone pillar 131 connected to the inside of the square shape; one side of the lateral bone column 132 is connected with the conversion plate 2, and two ends of the lateral bone column 132 at the connection part extend outwards, so that construction and stress are facilitated; when the lateral bone posts 132 are connected with the conversion plate 2, the conversion plate 2 can be welded with the lateral bone posts 132 in alignment, and can also be connected in a staggered manner according to the stress design; when the herringbone bone pillar 13 is manufactured, the thickness of the side bone pillar 132 is larger than that of the pillar plate 11, so that the requirements of vertical and lateral stress are met.

As shown in fig. 8 and 9, the frame column 1 further includes vertical longitudinal ribs 14, stirrups 15 connected to the vertical longitudinal ribs 14, and tie bars 16 connected between the longitudinal ribs 14; the longitudinal ribs 14 are arranged on the inner side of the baffle 9 at the position of the rectangular plate 21 at intervals, and the stirrups 15 are connected with the lapping plate 7 at the position of the rectangular plate 21. The Chinese character 'ri' shaped bone pillar 13 and the rectangular plate 21 connected to the inside of the pillar plate 11 are connected with fixing parts corresponding to the lacing wires 16, the fixing parts are rod-shaped steel parts, and the lacing wires 16 are convenient to bind.

In this embodiment, the rectangular plate 21 and the baffle 9 are connected and the welding of reentrant corner department has even board 8, and even has still the welding of stiffening rib board between board 8 one side and rectangular plate 21, the stiffening rib board is the triangle-shaped steel sheet. The height of the Chinese character ri-shaped bone column 13 is adapted to the height of the conversion plate 2, an angle piece is welded at the connection internal corner of the side bone column 132 in the Chinese character ri-shaped bone column 13 and the rectangular plate 21, a stiffening rib plate is welded on the angle piece, and the angle piece and the stiffening rib plate are steel plate pieces.

With reference to fig. 1 to 10, the connection node structure of the frame column and the diagonal brace is further described, which includes the following specific steps:

step one, designing the size of a frame column 1 at a K-shaped connecting node according to the frame column 1 and an inclined support 5, and manufacturing a column plate 11, a cross-shaped bone column 12 and a Chinese character 'ri' -shaped bone column 13; designing and manufacturing a conversion plate 2 and an inserting plate 3 connected to one side of the inclined support 5 according to the elevation of the two inclined supports 5; the shaft connecting holes 23 on the conversion plate 2 are machined and manufactured together, and the two ends of the conversion plate 2 are connected with the positioning steel bars and the reinforcing steel bar steel plates.

Step two, welding the cross bone columns 12 in the column plate 11, welding the column plate 11 and the cross bone columns 12 at two ends of the herringbone bone columns 13, and then welding the conversion plate 2 at the position of the herringbone bone columns 13; and welding two inserting plates 3 on one side of the inclined support 5, and checking whether the thickness of the inserting plate 3 and the width between the corresponding conversion plates 2 are proper or not, and if not, adjusting in time.

Step three, welding lug plates on the column plate 11 at the top end, and hoisting by a truck crane; marking the horizontal elevation of the top of the column of the installed bottom frame and the position of the axis of the column in advance by using a marker pen; and the lifted frame column 1 is mounted on the bottom frame column.

In the embodiment, the weight of the frame column 1 is about 60 tons, and the lifting lug welding is performed according to the position and the number of the lifting points for installing the frame column 1 which are designed in advance; the lifting lug is made of steel plates made of the same materials, the thickness of the lifting lug is delta =40mm, and the size of the lifting lug is 40 multiplied by 400 mm. The frame column 1 and the connected conversion plate 2 are transported to a hoisting position preset on site, hoisted and rotated by a truck crane, finally hoisted in place according to the designed direction and position and installed in alignment with the bottom frame column.

Step four, after the installation and alignment are completed, correcting the verticality and the horizontal elevation according to the coordinate position of the frame column 1 by using a total station; and 4 direction coordinate points are respectively arranged at the top of the frame column 1 to approve the verticality and the horizontal elevation, and the four sides of the frame column 1 are fixed after the design value is reached.

Step five, inserting an inclined support 5 with an inserting plate 3 on the conversion plate 2 through a pin shaft 4, and fastening after approving the position; binding longitudinal bars 14, stirrups 15 and tie bars 16 around the frame column 1, and erecting a template 17; the joint plate 7 is welded at the joint of the conversion plate 2 and the template 17, and the stirrup 15 is connected to the joint plate 7.

Sixthly, connecting a baffle 9 between the rectangular plates 21 of the adjacent conversion plates 2, and connecting a connecting plate 8 and a stiffening rib plate between the baffle 9 and the rectangular plate 21; and then, detecting the sealing performance of the whole template 17 and the joint thereof, completing erection after the design requirements are met, and finally pouring concrete.

In addition, in the installation process, according to the requirements of a design drawing and a deepened detailed design drawing, comprehensive inspection is carried out according to the design drawing and quality control; the mounting positions and the strength of the joints of the frame post 1, the conversion plate 2 and the diagonal braces 5 are ensured. The outline dimension of the component, the hole position and the hole diameter at the pin shaft 4, the appearance quality of a welding seam, the size of a butt joint groove of the frame column 1, the size of a gap and the like are mainly inspected, and the unqualified part needs to be corrected and trimmed before ground hoisting and is installed after being qualified.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.