净跨指承重结构之间的距离，是轴线跨度减去两端支承部分所剩余的长度，也称净跨度。
南昌市玉带河顺外路桥为一净跨22米的门式刚架桥，采用扩大基础。
The Shunwai Road Bridge of Yudai River in Nanchang is a portal rigid-jointed frame bridge with 22-meter net-span, adopting ampliate base.
奇怪的是，作为此古桥最基本的技术数据的净跨径现尚无定论，众说纷纭。
It is quite strange that no final conclusion has yet been reached on the clear span of this ancient bridge as the most basic datum. Public opinions are divergent.
该文建议挖开掩盖赵州桥拱脚的石块和泥土，找到两拱脚，精确测定净跨径。
The article proposes to clear away the earth and stones covering the two springs of arch of the bridge and then survey and determine with accuracy its clear span.
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