A construction method for an obliquely hung single-layer diamond grid circular tube truss

Abstract

The present invention discloses a construction method for an obliquely hung single-layer diamond grid circular tube truss, comprising the following steps: S1: designing a connection method between the obliquely hung single-layer diamond grid circular tube truss and a main structure; S2: processing and manufacturing the single-layer diamond grid circular tube truss; S3: performing segmented assembly and installation technology on the single-layer diamond grid circular tube truss; S4: using a polar coordinate calculation method to calculate the wire rope hanging point position and the wire rope length of the segmented circular tube truss, and hoisting the truss into place; S5: after the single-layer diamond grid circular tube truss is hoisted into place in sections, measurement and correction are performed, and welding and acceptance are performed after the correction is completed; the present invention adopts a pin shaft connection at one end of the obliquely hung single-layer diamond grid circular tube truss and a two-way sliding support connection at the other end to release constraints, eliminate the adverse effects of the truss on the main structure, and adopts in-situ segmented assembly technology and a polar coordinate calculation method to solve the construction problem of high-altitude diamond oblique circular tubes.

Description

Technical Field

[0001] The present invention relates to the technical field of truss construction, and in particular to a construction method of an obliquely hung single-layer diamond-shaped grid circular tube truss. Background Art

[0002] With the acceleration of urbanization and the rapid development of the construction industry, building structures are becoming increasingly diverse. Steel structures, as a crucial component of modern architecture, are constantly innovating and evolving with advancements in construction technology and evolving societal needs. From their initial single form to today's diverse array of steel structures, their construction difficulty is also increasing. During the construction of oblique-hung single-layer diamond-shaped grid circular tube trusses, two key concerns arise: first, preventing the adverse effects of excessive overall stiffness on the main structure; second, minimizing construction difficulty while ensuring safety and quality. Summary of the Invention

[0003] The purpose of the present invention is to provide a construction method for an obliquely hung single-layer diamond grid circular tube truss to solve the following technical problems: first, to avoid the adverse effect of excessive overall stiffness of the single-layer diamond grid circular tube truss on the main structure; second, to reduce the construction difficulty and ensure the safety and quality of the construction.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A method for constructing an obliquely hung single-layer diamond-shaped grid circular tube truss comprises the following steps:

[0006] S1: Design the connection method between the oblique hanging single-layer diamond grid circular tube truss and the main structure;

[0007] S2: Processing and manufacturing of single-layer diamond grid circular tube trusses;

[0008] S3: Segmental assembly and installation technology for single-layer diamond grid circular tube trusses;

[0009] S4: Use polar coordinate calculation method to calculate the wire rope hanging point position and wire rope length of the segmented circular tube truss, and then hoist it into place;

[0010] S5: After the single-layer diamond grid circular tube truss is hoisted into place in sections, measurement and calibration are carried out. After calibration, welding and acceptance are carried out.

[0011] As a further solution of the present invention: in step S1, the connection method of the oblique-hanging single-layer diamond grid circular tube truss and the main structure is considered as a simply supported beam, and the upper end of the oblique-hanging circular tube truss is connected by a pin shaft and the lower end is connected by a two-way sliding support, which releases the constraint and eliminates the adverse effect of the truss on the main structure; the two-way sliding support is welded to the steel truss chord of the main structure, and the four corners of the two-way sliding support are welded during the lifting process to prevent sliding. The temporary fixing measures are removed after it is in place.

[0012] As a further solution of the present invention: in step S2, the circular tubes in the single-layer diamond grid circular tube truss are divided into main tubes and secondary tubes according to the connection method and stress points with the structure, processed in a processing plant according to the requirements of the design drawings, and transported to the site in sections after inspection.

[0013] As a further solution of the present invention: in step S3, the single-layer diamond grid circular tube truss is divided into 6 units by cutting from both sides to the middle according to the main tube, and each unit is composed of a single main tube and 1 to 3 secondary tubes. After the assembly and welding on the ground are completed, the units are hoisted to the working surface in sections.

[0014] As a further solution of the present invention: the segmented assembly in S3 includes:

[0015] S31: Divide the single-layer diamond grid circular tube truss into 6 units from both sides to the middle according to the main pipe, and assemble and weld sections ① to ⑥ in situ;

[0016] S32: After assembly is completed, lift them in sections from the ground to the work surface in the order of ①-②-③-④-⑤-⑥.

[0017] Beneficial effects of the present invention:

[0018] This invention utilizes a single-layer, obliquely hung diamond-shaped grid circular tube truss with a pin connection at one end and a bidirectional sliding support at the other end, freeing the truss from constraints and eliminating its adverse effects on the main structure. Furthermore, the in-situ segmented assembly technique, along with polar coordinate calculations, addresses the construction challenges of high-altitude diamond-shaped oblique circular tubes by optimizing the wire rope suspension points and lengths for the curtain wall's oblique fixings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a segmented diagram of the obliquely hung single-layer diamond-shaped grid circular tube truss of the present invention;

[0021] Figure 2 This is a connection node diagram of the oblique hanging single-layer diamond grid circular tube truss of the present invention;

[0022] Figure 3 The oblique hanging single-layer diamond grid circular tube truss of the present invention is installed in sections;

[0023] Figure 4 The polar coordinate method of the present invention is used to set the hanging points and lengths of the steel wire ropes of the obliquely hung diamond grid truss. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] See also Figure 1-4 As shown, the present invention is a construction method of an oblique hanging single-layer diamond grid circular tube truss, comprising the following steps:

[0026] S1: Design the connection method between the oblique hanging single-layer diamond grid circular tube truss and the main structure;

[0027] S2: Processing and manufacturing of single-layer diamond grid circular tube trusses;

[0028] S3: Segmental assembly and installation technology for single-layer diamond grid circular tube trusses;

[0029] S4: Use polar coordinate calculation method to calculate the wire rope hanging point position and wire rope length of the segmented circular tube truss, and then hoist it into place;

[0030] S5: After the single-layer diamond grid circular tube truss is hoisted into place in sections, measurement and calibration are carried out. After calibration, welding and acceptance are carried out.

[0031] Further: in step S1, the connection method between the oblique-hanging single-layer diamond grid circular tube truss and the main structure is considered as a simply supported beam. The upper end of the oblique-hanging circular tube truss is connected by a pin shaft and the lower end is connected by a two-way sliding support, which releases the constraint and eliminates the adverse effect of the truss on the main structure; the two-way sliding support is welded to the steel truss chord of the main structure. During the lifting process, the four corners of the two-way sliding support are welded to prevent sliding. The temporary fixing measures are removed after it is in place.

[0032] Further: in step S2, the circular tubes in the single-layer diamond grid circular tube truss are divided into main tubes and secondary tubes according to the connection method and stress points with the structure, processed in the processing plant according to the requirements of the design drawings, and transported to the site in sections after inspection; since the inclined-hanging circular tube truss cannot be divided into horizontal and vertical sections according to normal components, the inclined-hanging circular tube truss is divided into main tubes and secondary tubes according to the connection method and stress points with the structure, which is convenient for processing and transportation.

[0033] Further: in step S3, the single-layer diamond grid circular tube truss is divided into 6 units by cutting from both sides to the middle according to the main tube, and each unit is composed of a single main tube and 1 to 3 secondary tubes. After the assembly and welding on the ground are completed, the sections are hoisted to the working surface; the circular tube truss is assembled and welded in units during installation, which can reduce the amount of welding in high-altitude operations and improve measurement accuracy and welding quality while meeting the requirements of tower crane hoisting operations.

[0034] Further: the segmented assembly in S3 includes:

[0035] S31: Divide the single-layer diamond grid circular tube truss into 6 units from both sides to the middle according to the main pipe, and assemble and weld sections ① to ⑥ in situ;

[0036] S32: After assembly is completed, lift them in sections from the ground to the work surface in the order of ①-②-③-④-⑤-⑥.

[0037] The working principle of the present invention is as follows: During installation, the obliquely hung single-layer diamond grid circular tube truss is divided into 6 units from both sides to the middle according to the main pipe cutting method. Each unit is composed of a main pipe with 1 to 3 secondary pipes. The units are assembled and welded on the ground, and then hoisted one by one to the working surface for installation. After welding is completed, the polar coordinate calculation method is used to calculate the wire rope hanging point setting and wire rope length of the obliquely hung single-layer diamond grid circular tube truss. This method can release constraints and eliminate the adverse effects of the truss on the main structure, thereby reducing the impact of the overall stiffness on the main structure. In addition, this method can also facilitate the transportation of the circular tube truss, reduce transportation costs, reduce construction difficulty, and ensure construction safety and quality.

[0038] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A construction method for an obliquely hung single-layer diamond grid circular tube truss, characterized in that: The following steps are involved: S1: Design the connection method between the oblique hanging single-layer diamond grid circular tube truss and the main structure; S2: Processing and manufacturing of single-layer diamond grid circular tube trusses; S3: Segmental assembly and installation technology for single-layer diamond grid circular tube trusses; S4: Use polar coordinate calculation method to calculate the wire rope hanging point position and wire rope length of the segmented circular tube truss, and then hoist it into place; S5: After the single-layer diamond grid circular tube truss is hoisted into place in sections, measurement and calibration are carried out. After calibration, welding and acceptance are carried out; In step S1, the connection method between the oblique-hanging single-layer diamond-shaped grid circular tube truss and the main structure is considered to be a simply supported beam. The upper end of the oblique-hanging circular tube truss is connected by a pin shaft and the lower end is connected by a bidirectional sliding support, which releases the constraint and eliminates the adverse effect of the truss on the main structure. The bidirectional sliding support is welded to the steel truss chord of the main structure. During the lifting process, the four corners of the bidirectional sliding support are welded to prevent sliding. After the temporary fixing measures are removed, In step S2, the circular tubes in the single-layer diamond grid circular tube truss are divided into main tubes and secondary tubes according to the connection method with the structure and the stress points. They are processed in the processing plant according to the requirements of the design drawings and transported to the site in sections after inspection.

2. The method for constructing an obliquely hung single-layer diamond grid circular tube truss according to claim 1, characterized in that: In step S3, the single-layer diamond grid circular tube truss is divided into 6 units by cutting from both sides to the middle according to the main tube. Each unit consists of a single main tube and 1 to 3 secondary tubes. After the assembly and welding on the ground are completed, the unit is hoisted to the work surface in sections.

3. The method for constructing an obliquely hung single-layer diamond grid circular tube truss according to claim 2, characterized in that: The segmented assembly in S3 includes: S31: Divide the single-layer diamond grid circular tube truss into 6 units from both sides to the middle according to the main pipe, and assemble and weld sections ① to ⑥ in situ; S32: After assembly is completed, lift them in sections from the ground to the work surface in the order of ①-②-③-④-⑤-⑥.

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