Construction method without external support of long-span steel structure arch and assembled and welded tire frame

Abstract

The invention discloses a construction method without external support of a large-span steel structure arch and an assembled and welded tire frame. In the method, the large-span steel structure arch is prefabricated into a steel structure arch composed of an arc-shaped steel arch and a steel column under the arch , the arc-shaped steel arch is composed of at least two arc-shaped segmented steel arches connected, and the joints of the arc-shaped segmented steel arch and the arc-shaped segmented steel arch are made into L-shaped joints, so that the arc-shaped segmented steel arch The joint formed when connecting the arc-shaped segmented steel arch is a Z-shaped joint, and the joint formed when the arc-shaped segmented steel arch is connected with the steel column under the arch is a straight-shaped joint; When assembling and welding arc-shaped steel arches, a mouth-shaped tire frame is placed below the Z-shaped joint position of each arc-shaped segmented steel arch, and under other positions of the arc-shaped segmented steel arch according to It is necessary to place an in-line tire frame and then weld it. The invention has the advantages of no external support, fast and convenient construction, simple structure, good construction quality and the like.

Description

technical field [0001] The invention relates to a construction method without external support of a large-span steel structure arch and an assembled and welded tire frame, belonging to the technical field of construction of a large-span steel structure arch. Background technique [0002] With the diversified development of building functions, steel structures are more and more integrated in building design. The steel structure arch is mainly used for the upper cover of the large space, the steel-concrete structure transition floor and other parts, which also determines its characteristics of large span and self-heavy. Large spans require high processing precision of the steel structure, and a slight deviation will cause the steel arch to be unable to be lowered accurately; self-heavy requirements require that the steel arch be segmented reasonably, and there must be sufficient welding length to ensure safe hoisting, and the lifting point position should be set reasonably. I...

AI Technical Summary

Problems solved by technology

After hoisting to the designated position, it was found that it could not be in place, so more effort had to be made to correct it

In addition, in the prior art, when using hoisting equipment to hoist large-span steel structure arches, it is often necessary to use the method of building external supports for hoisting, which not only increases the construction cost, but also affects the construction progress

Therefore, the existing construction methods of long-span steel structure arches are still not ideal enough to meet the needs of the building

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