rectangle concrete aqueduct 矩形混凝土渡槽
thin-wall concrete aqueduct 薄壁混凝土渡槽
large-scale concrete aqueduct 大型渡槽
concrete rectangle aqueduct 混凝土矩形渡槽
concrete ribbed arch aqueduct 混凝土肋拱渡槽
A large number of project experience have shown that thermal stress and ice expansive pressure are the primary factors which cause mass concrete aqueduct to crack and wreck.
大量工程实践证明，温度应力、冰膨胀力是引起大体积混凝土渡槽结构出现裂缝和发生事故的主要原因。
A new form concrete shell aqueduct in folded plate structure is introduced. It keeps the basic advantages of the U-shell aqueduct and avoids its main disadvantages.
提出了一种新型的折板式钢筋混凝土薄壳渡槽结构，它保留了U型薄壳渡槽的基本优点，避免了其主要缺点。
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