Multilayer steel truss fragmented reverse hoisting construction method in arc-shaped frame

A steel truss, multi-level technology, applied in the direction of construction, building structure, building materials, etc., can solve the problems of steel truss lifting difficulties, large volume of three-dimensional crossing operations, hoisting operations, etc., to reduce high-altitude assembly and welding operations less volume, fewer three-dimensional intersection operations, and reduced mechanical shifts

Active Publication Date: 2013-09-11
JIANGSU NANTONG NO 6 CONSTR GRP
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  • Claims
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Problems solved by technology

[0002] With the development of the national economy and the diversification of architectural design, more and more space special-shaped steel truss structures are used in various large-scale stadium buildings. Developed from the ground to be installed on the roof of the concrete building, cross-construction with other professions, the space available for hoisting is very small, and the conventional hoisting process cannot solve such problems
[0003] At present, during the construction of steel truss structure buildings, it is difficult to lift the steel truss from bottom to top. Under the condition of narrow space, i

Method used

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  • Multilayer steel truss fragmented reverse hoisting construction method in arc-shaped frame

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Embodiment 1

[0145] Embodiment one, Nantong Nengda Building construction project, refer to the attached figure 2

[0146] Project overview, Nengda Building construction project, project investment 226 million, construction area 119,998 square meters, the steel truss structure above the podium 2-18 to 2-23 axis lecture hall is a large-span multi-level spatial structure system, complex structure, Large components, heavy weight and high height. The project was constructed by Jiangsu Nantong No.6 Construction Group Co., Ltd. The hoisting of the steel structure began in September 2012 and ended in November 2012.

[0147] Application situation, there are 6 steel structure trusses in this project. There are many high-altitude operations during installation, and the construction is difficult. Only by adopting a reasonable installation plan can the construction period, safety, quality, and economy be guaranteed. After analysis and discussion, the lifting order of the steel trusses is a...

Embodiment 2

[0150] Embodiment 2, Keyu Information Industry Building

[0151]Project overview, Shanxi Keyu Industrial Co., Ltd. has a land area of ​​56,000 square meters and a total construction area of ​​116,000 square meters. The project is a main office building with 24 floors above ground, and an annex building with 3 floors above ground, with a single-story basement, which has functions such as scientific research, office, conference, and exhibition. The curved frame conference room in the annex building is designed as a three-story steel structure with a span of 36 meters, with a curved main truss (span 35.6 m, center line height of upper and lower chords 8.360 m, weight 80.5T), roof secondary truss (truss height 1.8 m, length 16.2 m, weight 36T), the middle level truss (span 34.2m, the height of the center line of the upper and lower chords is 2m), and the bottom level truss (span 32.8m, the height of the center line of the upper and lower chords is 2m), forming a three-level tru...

Embodiment 3

[0153] Embodiment 3, Fengshangfeng Business Complex Building

[0154] Project overview, Fengshangfeng commercial complex building project, two basement floors (partly three floors) are garages, the first to sixth floors above ground are podiums, and above the podiums are business buildings, of which the arc-shaped frame auditorium of the podium (the first basement The steel structure trusses from floor to roof) mainly have five parts: arc-shaped main truss (span 40.2m, centerline height of upper and lower chords 16.40m) passing through the second to sixth floors, roof secondary truss (truss height 2.1m, length 22.5m) , the middle layer (third and fifth floors) secondary truss (span 34.2m, centerline height of upper and lower chords 2m), the bottom layer (second floor) secondary truss (span 34.2m, height of upper and lower chord centerlines 2m), forming a four-layer truss . The project was constructed by Jiangsu Nantong No.6 Construction Group Co., Ltd. The hoisting of the...

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Abstract

The invention relates to a steel truss hoisting construction method, in particular to a multilayer steel truss fragmented reverse hoisting construction method in an arc-shaped frame. The multilayer steel truss fragmented reverse hoisting construction method comprises the steps of firstly performing modeling and checking calculation to all of hoisting conditions, utilizing brackets at two ends and a portal frame in the middle as lifting points of an arc-shaped main truss, hoisting the arc-shaped main truss by combining a hydraulic synchronous hoisting technology, connecting sub trusses above two roof trusses and steel beams to form a trapezoid fragmented truss, utilizing the temporality-fixed main truss hoisted in position and the hydraulic synchronous hoisting technology to install roof layer fragmented trusses, dismounting the lifting point of the portal frame of the arc-shaped main truss after the arc-shaped main truss is stabilized, sequentially and inversely lifting multilayer fragmented sub trusses to a bottom layer downward, and then utilizing the main truss, the sub trusses, a truck-mounted crane, a tower crane and leading chains to install other members and finish hoisting of a multilayer steel structure of the arc-shaped frame. The multilayer steel truss fragmented reverse hoisting construction method in the arc-shaped frame has the advantages of achieving hoisting operation in a narrow field or on a building surface, ensuring quality and safety, saving expenses, shortening a construction period and being free of pollution and good in environmental-protection benefit.

Description

technical field [0001] The invention relates to a steel truss hoisting construction method, in particular to a segmented reverse hoisting construction method of a multi-layered steel truss in an arc-shaped frame. Background technique [0002] With the development of the national economy and the diversification of architectural design, more and more space special-shaped steel truss structures are used in various large-scale stadium buildings. It has been developed from the ground to be installed on the roof of the concrete building, and it is cross-constructed with other professions. The space available for hoisting is very small, and the conventional hoisting process cannot solve such problems. [0003] At present, during the construction of steel truss structure buildings, it is difficult to lift the steel truss from bottom to top. Under the condition of narrow space, it cannot be hoisted directly on the reinforced concrete structure floor, and the arc-shaped main truss is ...

Claims

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Application Information

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IPC IPC(8): E04G21/14
Inventor 邹科华黄明章玉山章勇金杰
Owner JIANGSU NANTONG NO 6 CONSTR GRP
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