通过研究地铁线路纵断面设计的相关理论，将其作为纵断面计算机辅助设计研究的专业理论依据。
By way of studying the theory of metro route profile design, it is arranged that the professional theoretical basis of CAD development of metro route profile.
沉管隧道纵断面结构计算常采用弹性地基梁或弹性地基板法，但这些方法较难真实模拟沉管隧道的受力情况，特别是接头的受力情况。
Immersed tube tunnels are often analyzed by using the method of beam or plate on elastic foundation which can not precisely simulate the behavior of joints.
沉管隧道纵断面结构计算常采用弹性地基梁或弹性地基板法，但这些方法较难真实模拟沉管隧道的受力情况，特别是接头的受力情况。
Immersed tube tunnels are often analyzed by using the method of beam or plate on elastic foundation which can not precisely simulate the behavior of joints.
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