Report from our correspondent (reporter Su Zonggui) May 14th, Zhejiang Conservatory of music, 13 single in the most difficult monomer -- stadium, the roof truss installation origami.

The biggest characteristic of the stadium roof steel structure truss space structure is single-layer plane truss is taken after folding, single space structure formed by structure, completely different from the conventional independent structural unit of space pipe truss.

This paper folding structure truss in hoisting, extremely easy to deform, therefore, using the conventional hoisting method cannot meet the lifting requirement of the project. Finally, through the force research project department and technical department, decided to take the origami planar structure by adding a temporary member made it into space truss element is similar, and then through the control wire rope length to solve the eccentric instability problem, finally by reasonably setting the double hanging point position to solve the large tonnage crawler crane with double long distance the problem of load operation.

Space truss structure eccentricity is common, but the folding truss structure in space was the rare eccentric structure; large tonnage crawler crane double crane lifting is also very normal, but the large tonnage crawler crane double long distance travel with load lifting operation is the first application. After discussion by experts, this project, unit origami truss hoisting of 26T, using the 200T+100T dual walking lifting, at that time, because the double large tonnage load lifting is the industry for the first time, a few experts have expressed some worry, most experts said the overall is controllable, scheme for.

As of May 14th, the last successful hoisting crane.

The hoisting of the company has accumulated a very important experience in the construction industry in the hoisting technology, for the company's future lay a solid technical foundation in large special-shaped steel structure market.