A lifting device and construction method for a ring cable net with bifurcated cables

Abstract

The invention discloses a hoisting device and a construction method for a hoop cable net structure with bifurcated oblique cables, which are used for hoisting construction of a hoop cable net structure with bifurcated oblique cables. The hoisting device includes a hoisting group unit. The lifting group unit includes a lifting device one and a lifting device two, and each lifting group unit includes two lifting devices one and two lifting devices two; the lifting device one and the lifting device two are all arranged on the ring beam, and the lifting device One is connected with the ring cable, and the second lifting device is connected with the ring cable through the oblique cable. In the present invention, the loop cables are first lifted and fixed at high altitude, and then the oblique cables are lifted to complete the construction, which not only ensures the forming accuracy of the cable net structure, but also avoids the problem that the entire cable net is disturbed due to uneven force when the oblique cables are directly lifted. It has the advantages of stable construction process and high safety.

Description

technical field [0001] The invention relates to the technical field of cable net structure construction in large-span spaces, in particular to a lifting device and a construction method for a loop cable net with bifurcated oblique cables. Background technique [0002] The cable structure is one of the large-span prestressed steel structure systems, and it is a full-tension system with extremely high structural efficiency. The cable structure has the characteristics of different shapes and unique styles, but many creative structural designs have many difficulties during construction. [0003] Especially for the loop cable net structure with bifurcated diagonal cables, the diagonal cables of the above-mentioned cable net structure meet at the loop cable clip, not the axis of the loop cable structure, so the diagonal cable is lifted along the direction of the diagonal cable axis. When the lifting force directly acts on the loop cable clamp, it is very easy to cause uncontrolla...

AI Technical Summary

Problems solved by technology

Cable structures have different shapes and unique characteristics, but many creative structural designs have many difficulties in construction

[0003] Especially for the loop cable net structure with bifurcated cables, the oblique cables of the above cable net structure meet at the clip of the loop cable, not at the axis of the loop cable structure, so the cable is lifted along the direction of the cable axis When the lifting force acts directly on the ring cable clamp, it is very easy to cause uncontrollable deformation of the cable net in a flexible state, it is difficult to ensure the forming accuracy of the cable net, and at the same time, the unevenness of the lifting force will cause the cable The clamp is twisted and the cable clamp is destroyed, which greatly increases the difficulty of construction

Moreover, since the cable-net structure has almost no stiffness before the pre-tension is applied, it is difficult to adjust the shape of the cable-net

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