Construction method for modular prefabrication and interval hoisting of arc-shaped cornice

Abstract

The invention discloses a construction method for modular prefabrication and interval hoisting of an arc-shaped cornice. The construction method comprises the following steps that a keel assembly moulding bed is manufactured, and bottom truss main chord members and truss vertical rods are placing and temporarily fixed on the keel assembly moulding bed; the corners of truss diagonal rods are cut into corresponding oblique angles, and the bottom truss main chord members, the truss vertical rods, the truss diagonal rods and the top truss main chord members are combined into a whole; after the size is checked to be correct, the single truss is firmly welded to finish the processing of the single truss; the multiple manufactured single trusses are placed side by side at intervals, two corresponding truss main chord members are fixedly connected through decorative plate keels, and manufacturing of a hoisting unit module framework is completed; and a cornice decoration plate and a gutter are installed, hoisting unit modules are lifted to the cornice installation position, the cornice decoration plate is installed at the empty filling unit formed between every two adjacent hoisting unit modules, and construction is completed. The installation precision of the hoisting unit modules can be well guaranteed, meanwhile, the installation efficiency is greatly improved, and cross operation with other procedures is reduced.

Description

technical field [0001] The invention relates to the field of metal roof maintenance systems, in particular to a construction method for modular prefabrication of arc-shaped cornices and interval hoisting. Background technique [0002] With the development of society and the progress of science and technology, the shape of more and more public buildings has changed from satisfying the basic functions at first to satisfying the aesthetic value on the basis of satisfying the basic functions, such as different cities Large-scale public buildings such as high-speed rail stations, airports, and exhibition centers in Beijing are not only unique in design, rich in meaning, full of imagination and artistic sense, but also a beautiful business card that can reflect the charm of the city. As an important part of public buildings, cornices are located above the entrances and exits of public buildings. They can not only play a role in sheltering from wind and rain, but also reflect the d...

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Problems solved by technology

[0003] However, the realization of the aesthetic value of the cornice shape has brought about a multiplied increase in the construction difficulty, because this part is on the actual construction site, the construction conditions are very complicated, there are many cross operations and cumbersome, and the components in the construction part are all cantilevered Components; if the traditional piece-by-piece construction method is adopted, the eaves decorative panel keel is first installed at high altitude, and the decorative panel keel is installed in a single installation method, and then the cornice decorative panels are assembled piece by piece on the decorative panel keel. The way will lead to the construction period and the accuracy of the construction can not be guaranteed

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