Installation method of large-span steel truss combined structure

Abstract

The invention discloses a mounting method of a large-span steel truss combined structure. The mounting method of the large-span steel truss combined structure comprises the following steps: manufacturing an assembly jig frame according to a steel truss combined structure; the structures of the steel truss combination are spliced on the splicing jig frame according to the splicing graph, and after splicing is completed, jig removing treatment is conducted; and hoisting the assembled steel truss combination to a preset mounting position, and mounting the steel truss combination at the preset mounting position. According to the installation method of the large-span steel truss combined structure, all the components are integrally assembled on the ground and then hoisted, the aerial work content is reduced, the construction method is safe and reliable, compared with separated hoisting of a large-span steel truss, a steel column and an overhanging steel truss, the assembly quality and the installation quality can be more accurately controlled on the ground, and the process controllability is very high.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to an installation method of a large-span steel truss combined structure. Background Art

[0002] In conventional steel structure projects, when installing steel trusses, the steel columns are installed first, and then the large-span steel trusses between the columns and the outer cantilevered steel trusses are installed. Multiple installations and high-altitude docking connections are required, which has the disadvantages of low construction efficiency and difficulty in controlling installation deformation. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide an installation method for a large-span steel truss composite structure, which reduces the content of high-altitude operations, has a safe and reliable construction method, and can more accurately control the assembly quality and installation quality on the ground, with very high process controllability.

[0004] The present invention provides a method for installing a large-span steel truss composite structure, comprising the following steps:

[0005] Make an assembly frame according to the structure of the steel truss combination;

[0006] Assemble the various structures of the steel truss combination on the assembly frame according to the assembly drawing, and perform the mold removal process after the assembly is completed;

[0007] The assembled steel truss combination is lifted to the preset installation position and installed at the preset installation position.

[0008] In one embodiment, the manufacturing of the assembled tire frame according to the structure of the steel truss assembly further includes:

[0009] Determine the size and shape of the steel truss combination, and manufacture the assembly frame according to the shape and size of the steel truss combination;

[0010] A plurality of first connection points are marked on the assembly tire frame.

[0011] In one embodiment, the steps of assembling the structures of the steel truss assembly on the assembly frame according to the assembly drawing and performing a mold removal process after the assembly is completed further include:

[0012] marking a plurality of second connection points on each member of the steel truss assembly;

[0013] According to the assembly diagram, the second connection point is aligned with the first connection point, and each component is temporarily connected to the assembly frame;

[0014] Welding and fixing the structures of the steel truss assembly according to the assembly drawing;

[0015] After the assembly is completed, the steel truss assembly and the assembly frame are subjected to a debonding process.

[0016] In one embodiment, each structure of the steel truss assembly is subjected to a cambering operation before welding.

[0017] In one embodiment, the process of lifting the assembled steel truss assembly to a preset installation position and installing it at the preset installation position further includes:

[0018] Adjusting the steel truss assembly to a facade state;

[0019] Lifting the steel truss assembly adjusted to the facade state to a preset installation position;

[0020] The steel truss assembly is welded and fixed to the corresponding steel structure.

[0021] The installation method of the large-span steel truss composite structure provided by the present invention is that all components are hoisted after being assembled as a whole on the ground, which reduces the content of high-altitude operations. The construction method is safe and reliable. Compared with hoisting the large-span steel trusses, steel columns, and cantilevered steel trusses separately, the assembly quality and installation quality can be more accurately controlled on the ground, and the process controllability is very high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic flow chart of the installation method of the large-span steel truss composite structure provided by the present invention.

[0024] Figure 2 It is a schematic diagram of assembling the large-span steel truss combined structure and the assembled frame provided by the present invention.

[0025] Figure 3 A schematic diagram of the hoisting of the large-span steel truss composite structure provided by the present invention. DETAILED DESCRIPTION

[0026] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] The terms "first", "second", "third", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0030] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0031] See also Figure 1 The installation method of the large-span steel truss composite structure provided by the present invention comprises the following steps:

[0032] S1, manufacturing an assembly tire 1 according to the structure of the steel truss combination.

[0033] It is understandable that the above steps may further include:

[0034] S101, determine the size and shape of the steel truss combination, and manufacture an assembly frame 1 according to the shape and size of the steel truss combination.

[0035] Understandably, see Figure 2 and Figure 3The steel truss assembly includes a long-span steel truss, a steel column 2 and a cantilever steel truss. The long-span steel truss and the cantilever steel truss are welded on the corresponding two sides of the steel column. The long-span steel truss includes a first upper chord member 3.1, a first lower chord member 3.2 and a first web member 3.3. The first web member 3.3 is welded between the first upper chord member 3.1 and the first lower chord member 3.2. The first upper chord member 3.1 and the first lower chord member 3.2 are welded to the steel column 2. The first web member 3.3 can also be welded to the steel column 2 at its end. The cantilever steel truss includes a second upper chord member 3.1, a first lower chord member 3.2 and a first web member 3.3. The rod member 4.1, the second lower chord rod member 4.2 and the second web rod member 4.3, the second web rod member 4.3 is connected between the second upper chord rod member 4.1 and the second lower chord rod member 4.2, the second upper chord rod member 4.1 and the second lower chord rod member 4.2 are welded to the steel column 2, and similarly, the end of the second web rod member 4.3 can also be welded to the steel column 2, the assembled tire frame 1 can include a cross bar and a longitudinal bar, the two cross bars are arranged in parallel and aligned, the longitudinal bar is connected between the two cross bars, and the steel truss can also include a connecting rod, which can be adaptively connected and fixed to the steel column 2.

[0036] S102, marking a plurality of first connection points on the assembled tire frame 1.

[0037] It is understandable that a number of first connection points can be marked on the assembly frame according to the structure of the steel truss assembly.

[0038] S2, assembling the structures of the steel truss combination on the assembly frame 1 according to the assembly drawing, and performing a mold removal process after the assembly is completed.

[0039] It is understandable that the above steps may further include:

[0040] S201, marking a plurality of second connection points on each member of the steel truss assembly.

[0041] It can be understood that the second connection point is a point corresponding to the first connection point. The control coordinate points in the overall assembly diagram can be measured by a measuring instrument such as a total station, and corresponding positions on each component can be marked to form the second connection point.

[0042] S202, according to the assembly diagram, the second connection point is aligned with the first connection point, and each component is temporarily connected to the assembly frame 1.

[0043] It is understandable that the overall assembly diagram of the steel truss combination can be produced using software such as Tekla and AutoCAD. The assembly diagram should have corresponding dimensions, control coordinates, and the correspondence between the trusses and the assembly frame 1. The correspondence can be the correspondence of corresponding connection points.

[0044] S203, welding and fixing the structures of the steel truss assembly according to the assembly drawing.

[0045] It can be understood that the components are hoisted onto the assembly frame 1 in the order of steel columns, upper and lower chords of large-span trusses and cantilever trusses, and truss webs using lifting machinery, and the positions of steel columns and truss chords are adjusted to meet the accuracy requirements allowed by the control coordinates and specifications.

[0046] S204, each structure of the steel truss assembly is subjected to an arching operation before welding.

[0047] It can be understood that the deflection of the truss after installation can be well avoided.

[0048] S20, after the assembly is completed, the steel truss assembly and the assembly frame 1 are subjected to a debonding process.

[0049] S3, hoisting the assembled steel truss combination to a preset installation position, and installing it at the preset installation position.

[0050] The above steps may further include:

[0051] S301, adjust the steel truss assembly to the facade state.

[0052] S302, lifting the steel truss assembly adjusted to the facade state to a preset installation position;

[0053] S303, welding and fixing the steel truss assembly to the corresponding steel structure.

[0054] It is understandable that the steel column 2 in the combined structure of the large-span steel truss, steel column and cantilever steel truss is connected to the lower steel column of the steel structure, and the large-span steel truss is connected to the corresponding steel structure, and then the installation accuracy is adjusted. After reaching the accuracy required by the specification, welding and fixing are performed to complete the installation of the combined structure of the large-span steel truss, steel column 2 and cantilever steel truss. During installation, it is necessary to focus on controlling the accuracy of the docking installation of the steel column 2, which not only affects the installation accuracy of the steel column 2, but also has a significant impact on the installation accuracy of the large-span steel truss and cantilever steel truss.

[0055] From the above description, it can be known that in the installation method of the large-span steel truss composite structure provided by the present invention, all components are hoisted after being assembled as a whole on the ground, which reduces the content of high-altitude operations. The construction method is safe and reliable. Compared with hoisting the large-span steel trusses, steel columns 2, and cantilevered steel trusses separately, the assembly quality and installation quality can be more accurately controlled on the ground, and the process controllability is very high.

[0056] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A method for installing a large-span steel truss composite structure, characterized in that: The steps include: Make an assembly frame according to the structure of the steel truss combination; Assemble the various structures of the steel truss combination on the assembly frame according to the assembly drawing, and perform the mold removal process after the assembly is completed; The assembled steel truss combination is lifted to the preset installation position and installed at the preset installation position.

2. The method for installing a large-span steel truss composite structure according to claim 1, characterized in that: The method of manufacturing the assembled tire frame according to the structure of the steel truss combination further includes: Determine the size and shape of the steel truss combination, and manufacture the assembly frame according to the shape and size of the steel truss combination; A plurality of first connection points are marked on the assembly tire frame.

3. The method for installing a large-span steel truss composite structure according to claim 2, characterized in that: The method of assembling the structures of the steel truss assembly on the assembly frame according to the assembly drawing and performing a mold removal process after the assembly is completed further includes: marking a plurality of second connection points on each member of the steel truss assembly; According to the assembly diagram, the second connection point is aligned with the first connection point, and each component is temporarily connected to the assembly frame; Welding and fixing the structures of the steel truss assembly according to the assembly drawing; After the assembly is completed, the steel truss assembly and the assembly frame are subjected to a debonding process.

4. The method for installing a large-span steel truss composite structure according to claim 3, characterized in that: Each structure of the steel truss assembly is subjected to a cambering operation before welding.

5. The method for installing a large-span steel truss composite structure according to claim 1, characterized in that: The method of lifting the assembled steel truss assembly to a preset installation position and installing it at the preset installation position further includes: Adjusting the steel truss assembly to a facade state; Lifting the steel truss assembly adjusted to the facade state to a preset installation position; The steel truss assembly is welded and fixed to the corresponding steel structure.

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