High-altitude support-free installation method for large-span overweight box type steel beam

Abstract

A large-span overweight box type steel beam high-altitude support-free installation method comprises the following steps that a large-span steel beam is divided into a plurality of sections to form steel beam sections, and the number of the sections is not less than three; two of the steel beam sections are fixedly connected with a secondary beam to form a combined hoisting unit; the combined hoisting unit is hoisted to a first preset position, and the combined hoisting unit is fixedly connected with a corresponding pipe column and a core tube embedded part; and the remaining steel beam sections are sequentially hoisted to the second preset position to be fixedly connected with the steel beam sections hoisted to the first preset position. According to the high-altitude support-free installation method for the large-span overweight box type steel beam, the large-span steel beam is subjected to segmented treatment, so that segmented hoisting is carried out, high-performance hoisting equipment is not needed, a supporting jig frame does not need to be built, and the overall construction efficiency and construction safety are improved to a great extent.

Description

Technical Field

[0001] The invention relates to the technical field of box-type steel beam assembly, in particular to a high-altitude non-support installation method for a large-span and super-heavy box-type steel beam. Background Art

[0002] In order to meet the requirements of space utilization, super-high-rise buildings often need to adopt a combination of large-span steel beams + frame columns at high altitudes. At this time, the large-span steel beams have high performance requirements for lifting equipment, which brings certain difficulties to the construction.

[0003] Common construction plans for large-span steel beams include: temporary support frame construction plan, temporary inclined support construction method, etc. The above construction methods all require the establishment of temporary construction measures, which require a large amount of use and require local reinforcement of the original large-span steel beams to ensure the safety of the large-span steel beams during lifting. This will increase construction costs and the risk of high-altitude operations, while reducing construction efficiency. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a high-altitude unsupported installation method for large-span and extra-heavy box-type steel beams, which does not require high-performance lifting equipment and does not require the construction of a supporting frame, thereby greatly improving the overall construction efficiency and construction safety.

[0005] The present invention provides a method for high-altitude non-support installation of a large-span, super-heavy box-shaped steel beam, comprising the following steps:

[0006] Divide the long-span steel beam into a number of sections to form steel beam segments, wherein the number of sections is not less than three and the number of segments is not less than three;

[0007] Connecting and fixing two of the steel beam sections to the secondary beam to form a combined lifting unit;

[0008] Lifting the combined hoisting unit to a first preset position, and connecting and fixing the combined hoisting unit to corresponding pipe columns and core tube embedded parts respectively;

[0009] The remaining steel beam sections are sequentially hoisted to the second preset position and fixedly connected to the steel beam section hoisted to the first preset position.

[0010] In one embodiment, the step of dividing the long-span steel beam into a plurality of segments to form steel beam segments further comprises:

[0011] Dividing the long-span steel beam into several sections to form an initial section;

[0012] Two of the initial sections are selected and a Z-shaped interface is set at one end to form a first steel beam section, and Z-shaped interfaces are set at both ends of the remaining initial sections to form a second steel beam section.

[0013] In one embodiment, the method of connecting and fixing two of the steel beam sections to the secondary beam to form a combined lifting unit further includes:

[0014] The two first steel beam sections are connected and fixed to the secondary beam to form a combined lifting unit.

[0015] In one embodiment, the method of lifting the combined hoisting unit to a first preset position and connecting and fixing the combined hoisting unit to corresponding pipe columns and core tube embedded parts respectively further includes:

[0016] Arranging a positioning triangle plate on the pipe column;

[0017] Lifting the combined hoisting unit to a first preset position, and fixing the first steel beam section on the pipe column through the positioning triangle plate;

[0018] The secondary beam is connected and fixed to the corresponding embedded part of the core tube.

[0019] In one embodiment, the step of sequentially lifting the remaining steel beam segments to the second preset position and fixing them to the steel beam segment lifted to the first preset position further comprises:

[0020] Lifting the second steel beam section to a second preset position;

[0021] Connecting and fixing the corresponding Z-shaped interface between the second steel beam section and the first steel beam section;

[0022] Then the corresponding Z-shaped interfaces between the remaining second steel beam sections are connected and fixed.

[0023] The high-altitude unsupported installation method of a large-span, extra-heavy box-type steel beam provided by the present invention divides the large-span steel beam into sections and thereby lifts the section by section. No high-performance lifting equipment is required, and no supporting frame needs to be built. The overall construction efficiency and construction safety are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 The present invention provides a schematic structural diagram of a large-span steel beam after segmentation according to the method for high-altitude unsupported installation of a large-span, super-heavy box-shaped steel beam.

[0026] Figure 2 The present invention provides a schematic diagram of the installation of pipe columns in the initial state of the high-altitude unsupported installation method of large-span and super-heavy box-shaped steel beams.

[0027] Figure 3 The present invention provides a front view of the assembly of the initial section and the secondary beam of the high-altitude unsupported installation method of the large-span and super-heavy box-shaped steel beam.

[0028] Figure 4 The invention provides a side view of the assembly of the initial section and the secondary beam of the high-altitude unsupported installation method of the large-span and super-heavy box-shaped steel beam.

[0029] Figure 5 The present invention provides a schematic assembly diagram of a combined hoisting unit and a pipe column for the high-altitude unsupported installation method of a large-span, super-heavy box-shaped steel beam.

[0030] Figure 6 The present invention provides a schematic assembly diagram of secondary beams and embedded parts of core tubes in the high-altitude unsupported installation method of large-span and super-heavy box-type steel beams.

[0031] Figure 7 The present invention provides a schematic assembly diagram of the core tube embedded parts and the core tube structure of the high-altitude unsupported installation method of the large-span and super-heavy box-type steel beam.

[0032] Figure 8 The present invention is a schematic diagram of the high-altitude unsupported installation method of the large-span and super-heavy box-shaped steel beam after assembly is completed. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0037] 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.

[0038] See also Figure 1 and Figure 2 The method for high-altitude unsupported installation of a large-span, super-heavy box-shaped steel beam provided by the present invention comprises the following steps:

[0039] S1, dividing the long-span steel beam into a plurality of sections to form steel beam segments, wherein the number of the sections is not less than three.

[0040] It can be understood that, in this embodiment, the long-span steel beam can be a long-span extra-heavy box-type steel beam, and the long-span steel beam can be divided into three sections.

[0041] It is known that the above steps may further include:

[0042] S101, dividing the long-span steel beam into several sections to form an initial section.

[0043] It can be understood that, in this embodiment, it can be divided into three sections to form three initial sections, namely the first initial section 1, the second initial section 2 and the third initial section 3.

[0044] S102, selecting two of the initial segments and setting a Z-shaped interface at one end thereof to form a first steel beam segment, and setting a Z-shaped interface at both ends of the remaining initial segments to form a second steel beam segment.

[0045] It can be understood that the Z-shaped interfaces at both ends of the remaining initial section can be conveniently docked and fixed with the Z-shaped interfaces of the first steel beam section.

[0046] See also Figure 3 , S2, connect and fix two of the steel beam sections to the secondary beam 6 to form a combined lifting unit.

[0047] It is understandable that the above steps may further include:

[0048] The two first steel beam sections are connected and fixed to the secondary beam 6 to form a combined hoisting unit.

[0049] It can be known that the secondary beam 6 can be connected to the middle position of the first steel beam section, and the connection method can be in the form of welding. A temporary horse plate 8 can be set on the first steel beam section to position the secondary beam 6 at the corresponding position on the first steel beam section. After the welding with the first steel beam section is completed, the temporary horse plate 8 can be cut off.

[0050] See 4 and Figure 5 , S3, lift the combined hoisting unit to the first preset position, and connect and fix the combined hoisting unit to the corresponding pipe column 4 and core tube embedded parts 7 respectively.

[0051] It is understandable that the above steps may further include:

[0052] S301 , placing a positioning triangle plate 5 on the pipe column 4 .

[0053] It can be understood that the positioning triangle plate 5 can be welded and fixed to the lower flange positions at both ends of the first steel beam.

[0054] S302, hoisting the combined hoisting unit to a first preset position, and fixing the first steel beam section on the pipe column 4 by means of a positioning triangle plate 5.

[0055] It can be known that during installation, the end of the first steel beam section needs to be raised in advance according to the calculation and analysis results in order to install the arch and lifting machinery such as a tower crane. The positioning triangle plate 5 can be welded on the pipe column 4. The number of pipe columns 4 can be two, which are symmetrically embedded in the construction position.

[0056] S303, connecting and fixing the secondary beam 6 to the corresponding core tube embedded part 7.

[0057] It can be understood that the core tube embedded component 7 can be pre-embedded in the core tube structure 8, and the secondary beam 6 can be welded and fixed to the core tube embedded component 7.

[0058] S4, sequentially hoisting the remaining steel beam sections to the second preset position and fixedly connecting them to the steel beam section hoisted to the first preset position.

[0059] It is understandable that the above steps may further include:

[0060] S401, lifting the second steel beam section to a second preset position.

[0061] S402, connecting and fixing the corresponding Z-shaped interface between the second steel beam segment and the first steel beam segment;

[0062] S403, then connect and fix the corresponding Z-shaped interfaces between the remaining second steel beam segments.

[0063] From the above description, it can be known that the high-altitude unsupported installation method of the large-span and extra-heavy box-type steel beam provided by the present invention divides the large-span steel beam into sections and lifts it in sections. There is no need for high-performance lifting equipment and no need to build a supporting frame. The overall construction efficiency and construction safety are greatly improved.

[0064] 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 high-altitude unsupported installation of large-span, super-heavy box-shaped steel beams. It is characterized in that The steps include: Divide the long-span steel beam into a number of sections to form steel beam segments, wherein the number of the sections is not less than three; Connecting and fixing two of the steel beam sections to the secondary beam to form a combined lifting unit; Lifting the combined hoisting unit to a first preset position, and connecting and fixing the combined hoisting unit to corresponding pipe columns and core tube embedded parts respectively; The remaining steel beam sections are sequentially hoisted to the second preset position and fixedly connected to the steel beam section hoisted to the first preset position.

2. The high-altitude unsupported installation method of a large-span, super-heavy box-shaped steel beam as claimed in claim 1, It is characterized in that The step of dividing the long-span steel beam into a plurality of sections to form steel beam sections further comprises: Dividing the long-span steel beam into several sections to form an initial section; Two of the initial sections are selected and a Z-shaped interface is set at one end to form a first steel beam section, and Z-shaped interfaces are set at both ends of the remaining initial sections to form a second steel beam section.

3. The high-altitude unsupported installation method of a large-span, super-heavy box-shaped steel beam as claimed in claim 2, It is characterized in that The method of connecting and fixing two of the steel beam sections to the secondary beam to form a combined hoisting unit further includes: The two first steel beam sections are connected and fixed to the secondary beam to form a combined lifting unit.

4. The high-altitude unsupported installation method of a large-span, super-heavy box-shaped steel beam as claimed in claim 3, It is characterized in that The method of lifting the combined hoisting unit to a first preset position and connecting and fixing the combined hoisting unit to corresponding pipe columns and core tube embedded parts respectively further comprises: Arranging a positioning triangle plate on the pipe column; Lifting the combined hoisting unit to a first preset position, and fixing the first steel beam section on the pipe column through the positioning triangle plate; The secondary beam is connected and fixed to the corresponding embedded part of the core tube.

5. The high-altitude unsupported installation method of a large-span, super-heavy box-shaped steel beam as claimed in claim 4, It is characterized in that The method of sequentially lifting the remaining steel beam sections to the second preset position and fixing them to the steel beam section lifted to the first preset position further comprises: Lifting the second steel beam section to a second preset position; Connecting and fixing the corresponding Z-shaped interface between the second steel beam section and the first steel beam section; Then the corresponding Z-shaped interfaces between the remaining second steel beam sections are connected and fixed.

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