CN113481866A - Assembling device and assembling method for multi-node chord member box-type structure of steel truss girder - Google Patents

Abstract

The invention discloses an assembling device and an assembling method for a multi-node chord box-type structure of a steel truss girder, wherein the assembling device comprises an assembling platform, a longitudinal assembling base line is arranged in the longitudinal middle of the assembling platform, a row of first stand columns are respectively fixed on two sides of the longitudinal assembling base line on the assembling platform along the longitudinal direction, the inner end surfaces of the first stand columns in each row are positioned on the same straight line, a row of second stand columns are respectively fixed on two ends of the assembling platform along the transverse direction, and the inner end surface of the second stand column in each row is positioned on the same straight line, so that a rectangular assembling space is formed between the two rows of the first stand columns in the longitudinal arrangement and the two rows of the second stand columns in the transverse arrangement; the first upright post is provided with a transverse adjusting device which is positioned at the two longitudinal sides of the multi-node chord member box-type structure of the steel truss girder, the second upright post is provided with a longitudinal adjusting device which is positioned at the two longitudinal ends of the multi-node chord member box-type structure of the steel truss girder. The device can improve the manufacturing quality of the steel truss girder member and ensure the safety of the field manufacturing of the steel truss girder chord member.

Description

Assembling device and assembling method for multi-node chord member box-type structure of steel truss girder

Technical Field

The invention belongs to the technical field of steel bridge chord member assembly, and particularly relates to an assembly device and an assembly method for a multi-node chord member box type structure of a steel truss girder.

Background

The steel truss girder member has the characteristics of smaller member, convenient transportation and the like, and can adapt to harsh transportation conditions in mountainous areas, so the steel truss girder becomes a preferred scheme for constructing large-span or mountainous bridges; for the steel truss girder, the node position relation of the member is the most important control item, directly influences the field installation quality of the bridge position, and determines the bridge forming line shape. With the progress of bridge construction technology, chords with a plurality of multi-nodes are provided, and the chords are high in manufacturing precision and difficult to construct. In the past, steel truss chord members are mainly manufactured on platforms, the safety of the manufacturing process is low, the chord member quality and the node position relation are not easy to guarantee, and due to the fact that the requirements on the geometric precision and the node relation of multi-node chord members are higher, and the member members are larger, an assembling device and an assembling method capable of improving the chord member assembling quality need to be developed.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides an assembling device and an assembling method for a multi-node chord box type structure of a steel truss girder. The technical problem to be solved by the invention is realized by the following technical scheme:

a steel truss multi-node chord member box type structure assembling device comprises an assembling platform, wherein a longitudinal assembling base line is arranged in the longitudinal middle of the assembling platform, a row of first stand columns are longitudinally and respectively fixed on two sides of the longitudinal assembling base line on the assembling platform, the inner end face of each row of first stand columns is located on the same straight line, a row of second stand columns are transversely and respectively fixed on two ends of the assembling platform, and the inner end face of each row of second stand columns is located on the same straight line, so that a rectangular assembling space is formed between the two rows of longitudinally arranged first stand columns and the two rows of transversely arranged second stand columns; the first upright columns are respectively provided with a transverse adjusting device, the transverse adjusting devices are located on the two longitudinal sides of the steel truss girder multi-node chord member box-type structure, the second upright columns are respectively provided with a longitudinal adjusting device, and the longitudinal adjusting devices are located at the two longitudinal ends of the steel truss girder multi-node chord member box-type structure.

Furthermore, the first upright columns are all first H-shaped steel, and two side walls of the first upright columns are transversely arranged; the transverse adjusting device is composed of a first supporting block and a transverse adjusting lead screw horizontally connected to the first supporting block in a threaded mode, and the first supporting block is fixed to the side wall of the first H-shaped steel.

Furthermore, the second upright columns are made of second H-shaped steel, and two side walls of the second upright columns are longitudinally arranged; the longitudinal adjusting device is composed of a second supporting block and a longitudinal adjusting screw rod horizontally connected to the second supporting block in a threaded mode, and the second supporting block is fixed to the inner side wall of the second H-shaped steel.

Furthermore, the number of the second upright columns is four, every two second upright columns are a row of longitudinal two ends which are respectively fixed on the assembling platform, and the longitudinal adjusting screw rod is spatially positioned on the inner side of the inner end face of the second upright column.

Furthermore, a plurality of supporting base plates are fixed on the assembling platform and arranged along the longitudinal assembling base line.

The invention also provides a method for assembling the steel truss girder multi-node chord member box-type structure by using the steel truss girder multi-node chord member box-type structure assembling device, which comprises the following steps:

step 1: manufacturing a lower cover plate unit, an upper cover plate unit and a multi-node web plate unit according to the prior art, wherein the position relation of a node plate on the multi-node web plate unit is required to be accurately controlled;

step 2: placing a lower cover plate unit in a rectangular assembly space on the assembly platform, and positioning through a longitudinal assembly base line on the assembly platform;

and step 3: according to the prior art, a partition plate is positioned and assembled on a lower cover plate unit, then a multi-node web plate unit is hoisted on two sides of the partition plate, and the multi-node web plate unit is abutted against the inner sides of two rows of first upright posts which are longitudinally arranged to avoid toppling, then the longitudinal position of the multi-node web plate unit is accurately adjusted by rotating a longitudinal adjusting screw rod on a longitudinal adjusting device, so that the end part of the multi-node web plate unit is aligned with the end part of the lower cover plate unit, then the transverse adjusting screw rod on a transverse adjusting device is rotated to enable the multi-node web plate unit to be closely attached to the partition plate, and then the partition plate is welded with the lower cover plate unit and the multi-node web plate unit;

and 4, step 4: and hoisting the upper cover plate unit above the multi-node web plate unit, slowly dropping the upper cover plate unit to enable the upper cover plate unit to penetrate through the node plates on the multi-node web plate unit, adjusting the installation position to enable the end part of the upper cover plate unit to be aligned with the end part of the multi-node web plate unit, and then welding the upper cover plate unit with the multi-node web plate unit and the partition plates to complete assembly.

The invention has the beneficial effects that:

1. the invention can effectively ensure the geometric dimension precision and the node position relation of the finally manufactured multi-node chord member, can also improve the manufacturing quality of the steel truss girder member, and simultaneously ensures the field manufacturing safety of the steel truss girder chord member;

2. the assembling device is strong in practicability, simple to operate, high in efficiency and good in effect after practice verification.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic structural diagram of an assembling apparatus according to the present invention;

FIG. 2 is a partially enlarged schematic view of the assembly apparatus;

FIG. 3 is a schematic view of the present invention with the addition of a support mat;

fig. 4-7 are schematic views of the assembly process of the multi-node chord member of the steel truss girder.

Description of reference numerals:

1-assembling a platform; 2-a first upright; 3-a second upright; 4-a lateral adjustment device; 5-longitudinal adjusting device; 6-supporting the base plate; 7-a lower cover plate unit; 8-an upper cover plate unit; 9-a multi-node web unit; 10-a separator; 11-a web joint plate; 12-a diagonal bar joint unit; 13-beam joint unit; 1-1-longitudinal assembly of baselines; 4-1-a first support block; 4-2-transversely adjusting the lead screw; 5-1-a second support block; 5-2-longitudinally adjusting the screw rod.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1 to 3, an embodiment of the present invention provides an assembling device for a multi-node chord box-type structure of a steel truss girder, including an assembling platform 1, a longitudinal assembling base line 1-1 is disposed at a longitudinal middle portion of the assembling platform 1, a row of first upright posts 2 is respectively fixed on the assembling platform 1 at two sides of the longitudinal assembling base line 1-1 along a longitudinal direction, inner end surfaces of the first upright posts 2 in each row are located on a same straight line, a row of second upright posts 3 is respectively fixed at two ends of the assembling platform 1 along a transverse direction, and inner end surfaces of the second upright posts 3 in each row are located on the same straight line, so that a rectangular assembling space is formed between the two rows of first upright posts 2 arranged longitudinally and the two rows of second upright posts 3 arranged transversely; all be equipped with horizontal adjusting device 4 on the first stand 2, and horizontal adjusting device 4 is located the vertical both sides of steel longeron multinode chord member box structure, all is equipped with vertical adjusting device 5 on the second stand 3, and vertical adjusting device 5 is located the vertical both ends of steel longeron multinode chord member box structure.

Furthermore, the first upright posts 2 are all first H-shaped steel, and two side walls of the first upright posts are transversely arranged; the transverse adjusting device 4 consists of a first supporting block 4-1 and a transverse adjusting screw rod 4-2 horizontally screwed on the first supporting block 4-1, and the first supporting block 4-1 is fixed on the side wall of the first H-shaped steel.

Furthermore, the second upright posts 3 are all second H-shaped steel, and two side walls of the second upright posts are longitudinally arranged; the longitudinal adjusting device 5 consists of a second supporting block 5-1 and a longitudinal adjusting screw rod 5-2 horizontally screwed on the second supporting block 5-1, and the second supporting block 5-1 is fixed on the inner side wall of the second H-shaped steel.

Furthermore, the number of the second upright columns 3 is four, every two second upright columns are in a row and are respectively fixed at the two longitudinal ends of the assembling platform 1, and the longitudinal adjusting screw rods 5-2 are spatially positioned on the inner side of the inner end face of the second upright column 3. Namely, the longitudinal adjusting screw 5-2 is positioned on two opposite surfaces of the second upright post 3 on the same row.

Further, a plurality of supporting base plates 6 are fixed on the assembling platform 1, and the supporting base plates 6 are arranged along the longitudinal assembling base line 1-1.

If the position of the chord lower cover plate unit 7 needing to be assembled is higher than that of the multi-node web plate unit, a plurality of supporting base plates 6 are arranged on the assembling device, and the supporting base plates 6 are respectively fixed on the longitudinal assembling base line 1-1 of the assembling platform 1.

Because the multi-node steel truss girder chord member is long in length and has higher requirements on the geometric accuracy and the node relation of the chord member box-shaped structure, each part of the chord member box-shaped structure is accurately positioned through the first upright post 2, the second upright post 3, the transverse adjusting device 4 and the longitudinal adjusting device 5, and therefore the steel truss girder chord member meeting various requirements is obtained.

Example 2

Referring to fig. 4 to 7, an embodiment of the present invention provides a method for assembling a multi-node chord member of a steel truss girder, where the assembling method uses the assembling apparatus described in embodiment 1, and specifically includes the following steps:

step 1: manufacturing a lower cover plate unit 7, an upper cover plate unit 8 and a multi-node web plate unit 9 according to the prior art, namely respectively assembling and welding the lower cover plate and a stiffening rib, and the upper cover plate and the stiffening rib into the lower cover plate unit and the upper cover plate unit, and assembling and welding the web plate, a node plate and the stiffening rib into the multi-node web plate unit; wherein the positional relationship of the gusset plates on the multi-gusset web unit 9 is to be precisely controlled.

Step 2: the lower cover plate unit 7 is arranged in a rectangular assembly space on the assembly platform 1 and is positioned through a longitudinal assembly baseline 1-1 on the assembly platform 1; the position of the lower cover plate unit 7 is located by aligning the longitudinal baseline on the lower cover plate unit 7 with the longitudinal assembly baseline 1-1 on the assembly platform 1.

And step 3: according to the prior art, a partition plate 10 is assembled on a lower cover plate unit 7 in a positioning mode according to a transverse base line on the lower cover plate unit 7, then a multi-node web plate unit 9 is hung on two sides of the partition plate 10 according to the transverse base line on the lower cover plate unit 7, the multi-node web plate unit 9 is abutted against the inner sides of two rows of first vertical columns 2 which are longitudinally arranged to avoid toppling, then the longitudinal position of the multi-node web plate unit 9 is accurately adjusted by rotating a longitudinal adjusting lead screw 5-2 on a longitudinal adjusting device 5, the end portion of the multi-node web plate unit 9 is aligned with the end portion of the lower cover plate unit 7, then the multi-node web plate unit 9 is tightly attached to the partition plate 10 by rotating a transverse adjusting lead screw 4-2 on a transverse adjusting device 4, and then the partition plate 10 is welded with the lower cover plate unit 7 and the multi-node web plate unit 9.

And 4, step 4: and hoisting the upper cover plate unit 8 above the multi-node web plate unit 9, slowly dropping to enable the upper cover plate unit 8 to pass through the node plates on the multi-node web plate unit 9, adjusting the installation position to enable the end part of the upper cover plate unit 8 to be aligned with the end part of the multi-node web plate unit 9, and then welding the upper cover plate unit 8 with the multi-node web plate unit 9 and the partition plate 10 to complete the assembly of the chord box type structure.

And 5: after the chord member box type structure is assembled, the longitudinal and transverse base lines of the chord member box type structure are corrected, and a radial drilling machine is adopted to drill the multi-node web plate unit 9 node plates and the bolt hole groups at two ends by taking the longitudinal and transverse base lines as a reference.

Step 6: and (3) assembling and welding web joint plates 11 between the node plates of the multi-node web unit 9 by taking the longitudinal and transverse datum lines of the chord box type structure as a reference, and assembling and welding diagonal joint units 12 and beam joint units 13 outside the chord box type structure.

And 7: and drawing a drilling position line by taking a longitudinal and transverse datum line of the chord member box type structure as a reference, and arranging bolt holes on the diagonal member joint unit 12 and the cross beam joint unit 13 by adopting a magnetic drill group, thereby completing the assembly of the multi-node chord member of the steel truss girder.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (6)

1. The assembling device for the multi-node chord box-type structure of the steel truss girder is characterized by comprising an assembling platform, wherein a longitudinal assembling base line is arranged in the longitudinal middle of the assembling platform, two rows of first stand columns are respectively and longitudinally fixed on two sides of the longitudinal assembling base line on the assembling platform, the inner end faces of the first stand columns in each row are positioned on the same straight line, one row of second stand columns are respectively and transversely fixed on two ends of the assembling platform, and the inner end face of each row of second stand columns is positioned on the same straight line, so that a rectangular assembling space is formed between the two rows of longitudinally arranged first stand columns and the two rows of transversely arranged second stand columns; the first upright columns are respectively provided with a transverse adjusting device, the transverse adjusting devices are located on the two longitudinal sides of the steel truss girder multi-node chord member box-type structure, the second upright columns are respectively provided with a longitudinal adjusting device, and the longitudinal adjusting devices are located at the two longitudinal ends of the steel truss girder multi-node chord member box-type structure.

2. The assembling device for the multi-node chord box-type structure of the steel truss girder according to claim 1, wherein the first upright columns are all first H-shaped steel, and two side walls of the first upright columns are transversely arranged; the transverse adjusting device is composed of a first supporting block and a transverse adjusting lead screw horizontally connected to the first supporting block in a threaded mode, and the first supporting block is fixed to the side wall of the first H-shaped steel.

3. The assembling device for a multi-node chord box-type structure of a steel truss girder according to claim 1, wherein the second upright columns are all second H-shaped steel, and two side walls of the second upright columns are longitudinally arranged; the longitudinal adjusting device is composed of a second supporting block and a longitudinal adjusting screw rod horizontally connected to the second supporting block in a threaded mode, and the second supporting block is fixed to the inner side wall of the second H-shaped steel.

4. The assembling device for a multi-node chord box-type structure of a steel truss girder according to claim 3, wherein the number of the second upright columns is four, every two second upright columns are fixed at two longitudinal ends of the assembling platform respectively, and the longitudinal adjusting screw rod is spatially positioned inside the inner end face of the second upright column.

5. The assembling device for a steel truss girder multi-node chord box type structure as claimed in claim 1, 2, 3 or 4, wherein a plurality of supporting base plates are fixed on the assembling platform and arranged along the longitudinal assembling base line.

6. A method for assembling a steel truss girder multi-node chord member box type structure by using the device as claimed in claims 1 to 5, which is characterized by comprising the following steps:

step 1: manufacturing a lower cover plate unit, an upper cover plate unit and a multi-node web plate unit according to the prior art, wherein the position relation of a node plate on the multi-node web plate unit is required to be accurately controlled;

step 2: placing a lower cover plate unit in a rectangular assembly space on the assembly platform, and positioning through a longitudinal assembly base line on the assembly platform;

and step 3: according to the prior art, a partition plate is positioned and assembled on a lower cover plate unit, then a multi-node web plate unit is hoisted on two sides of the partition plate, and the multi-node web plate unit is abutted against the inner sides of two rows of first upright posts which are longitudinally arranged to avoid toppling, then the longitudinal position of the multi-node web plate unit is accurately adjusted by rotating a longitudinal adjusting screw rod on a longitudinal adjusting device, so that the end part of the multi-node web plate unit is aligned with the end part of the lower cover plate unit, then the transverse adjusting screw rod on a transverse adjusting device is rotated to enable the multi-node web plate unit to be closely attached to the partition plate, and then the partition plate is welded with the lower cover plate unit and the multi-node web plate unit;

and 4, step 4: and hoisting the upper cover plate unit above the multi-node web plate unit, slowly dropping the upper cover plate unit to enable the upper cover plate unit to penetrate through the node plates on the multi-node web plate unit, adjusting the installation position to enable the end part of the upper cover plate unit to be aligned with the end part of the multi-node web plate unit, and then welding the upper cover plate unit with the multi-node web plate unit and the partition plates to complete assembly.

Images