棚洞是指明挖路堑后，构筑简支的顶棚架，并回填而成的洞身，属于明洞范畴的隧道。采用棚洞的条件与明洞大致相似，其结构整体性比明洞差，但由于顶棚与内外墙简支，因此对地基的要求相对较低。
正文：山区高速公路棚洞施工监测技术 关键词】山区；高速公路；棚洞；施工；监测 [gap=561]Keywords: Mountainous area; Expressway; Hangar tunnel; Construction; Mon itoring
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拱形明洞arch open cut tunnel;arch tunnel without cover;arch gallery 棚洞shed tunnel;shed gallery 路堑式明洞cut-type open cut tunnel;cut-type tunnel without cover;cut-type gallery ..
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拱形明洞arch open cut tunnel;arch tunnel without cover;arch gallery 棚洞shed tunnel;shed gallery 路堑式明洞cut-type open cut tunnel;cut-type tunnel without cover;cut-type gallery ..
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... 明洞opencut tunnel 棚洞tunnel shed; hangar tunnel 隧道防水waterproofing of tunnel; tunnel water proofing ...
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研究成果对棚洞的设计和施工具有一定的参考价值。
The achievement could give a preference for the design and construction of shed-tunnel.
本文对棚洞的施工过程及其抗震的合理结构形式进行了研究。
This paper provided a study of construction process and rational aseismatic structure of a shed-tunnel.
由于棚洞的埋深很浅，覆盖土厚度薄，地震时往往产生破坏。
As shed-tunnel often has low depth and thin surface cover, it's easier to be damaged in earthquake.
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