TUNNEL ROOF FRAME USING STEEL PIPE WITH VARYING DIAMETER OF TUBE AND SOUND BARRIER HAVING THE SAME

摘要

Tunnel roof framing using steel pipes with varying pipe diameter of the present invention and a soundproof tunnel including the same are disposed on the roof side of the soundproof tunnel, bent in an arc shape, and coupled to the top of the prop frame, the first steel pipe, the lower part of the first steel pipe The second steel pipe is spaced apart from the first steel pipe, is bent in an arcuate shape, and is disposed between the first steel pipe and the second steel pipe, and the second steel pipe coupled to the support frame at the bottom of the region where the support frame and the first steel pipe are combined. It includes a connecting steel pipe for connecting the first steel pipe and the second steel pipe, and at least one of the first steel pipe and the second steel pipe increases from the upper portion of the arch to the lower portion in order to reduce the self-weight and increase the span of the soundproof tunnel. The diameter of the inner tube increases.