采用层合板理论对冰层做了热弹性有限元的分析和计算，给出了冰层宽度最大的第一层冰的温度膨胀力。
Ice layers are calculated and analyzed with the thermo-elastic finite element method in accordance with the lam.
采用热膨胀力测试系统和孔隙测定装置研究了不同温度条件下砂岩和石灰岩的热膨胀力和孔隙率的变化规律。
The change laws of heat swelling power and porosity of sandstone and limestone were researched at different temperatures using a heat swelling power experimental system and a porosity test apparatus.
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 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.
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