Construction method of double-inclined arch supported hyperbolic paraboloid cable net structure for limited construction space

Abstract

The invention relates to the technical field of prestressed structure space construction, and discloses a construction method of a double-inclined arch supported hyperbolic paraboloid cable net structure for a limited construction space. An obstacle is arranged at one side of a construction site under the cable net structure. The construction method comprises the following steps of laying a cablenet on the ground of the construction site; installing a lifting tooling and a lifting steel strand; lifting a load bearing cable in the single side at the side B; performing auxiliary lifting at theside A; in a process of waiting for lifting, when the whole of the cable net is offset to be capable of breaking through the limited space, starting to lift at the side A, and converting the lifting of the load bearing cable mainly at one side into the simultaneous lifting at the two sides; in the lifting process of the load bearing cable at the side A, assembling the rest cable net structure in the air, and connecting a wind-resistant cable with the load bearing cable by cable clamps; after the load bearing cable is lifted to a proper position, performing fixation and tensioning; integrally and synchronously lifting the wind-resistant cable; and then, integrally and synchronously tensioning the wind-resistant cable and performing fixation. The construction method has the advantages that the ground assembly and high-altitude assembly are combined, the load bearing cable is lifted in an eccentric way in the single side so that the load bearing cable is in place at first; and then, the wind-resistant cable is tensioned so that the cable net is formed. The construction is simple, convenient and efficient.

Description

technical field [0001] The invention relates to the technical field of prestressed structural space construction, in particular to a construction method for a double-slope arch bearing hyperbolic parabolic cable-net structure with limited construction space. Background technique [0002] The cable net structure is a new type of structure developed in the middle of the 20th century. It is a fully flexible prestressed structure with space force. It uses cables and steel components as the main load-bearing structure to transmit external loads. The emergence of the cable net structure has a lot of impetus to the development of the structural form. It can give full play to the strength of the material and has high structural efficiency, especially suitable for long-span spatial structures. [0003] The general shape of the cable net structure is a saddle-shaped orthogonal cable net, with the load-bearing cables on the bottom and the wind-resistant cables on the top, and the upper...

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Problems solved by technology

[0008] The technical problem to be solved is: the general overall traction lifting method is not suitable for the situation where the ground space is limited, while the high-altitude assembly method has a large workload on site, low construction efficiency, and a large space occupation, which is not conducive to the progress of cross construction and seriously affects the construction. cycle

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