大孔混凝土是以粗集料和水泥配制成的一种轻混凝土，也称无砂混凝土。
贵州大花水水电站碾压混凝土双曲拱坝、重力坝开挖采用深孔梯段微差爆破。
The excavation of the rolled concrete double-curvature arch dam and gravity dam in Dahuashui hydroelectric station in Guizhou adopted deep-hole graded slight differences demolition.
本文以杭州湾跨海大桥北航道非通航孔桥为工程背景，对大跨度预应力混凝土箱梁锚固区混凝土的应力应变分布特征进行了分析研究。
A study of the stress and strain distribution of anchorage zone in a long span PC box girder was undertaken in the background of Hangzhou Bay Bridge project.
本架桥机 主要应用于大跨度、大吨位、双幅桥梁架设中混凝土整孔箱梁的架设。
The gait-model bridge girder erection machine mainly applied to the erection of long-span, large-tonnage and double amplitude bridge deck concrete full-span box girders.
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