The following factors were considered in heat loss calculating model, namely various valves, elbows, compensator, tube diameter, various injection conditions and injecting pipe's eccentric structure.

模型考虑了注汽管线上各种阀门、弯头、补偿器、异径管的影响，考虑了变注入工况和注汽管偏心结构对热损失的影响。

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At last, with the same model and the same conditions, the relationship between pile depth, pile diameter and the anti-earthquake ability of the structure was studied, some conclusions were made.

最后，针对同样的结构体系，利用以上程序分别计算分析了在其他条件一致的情况下桩深、桩径对结构整体抗震性能的影响，得出结论。

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Set the height of accelerating section and decelerating section, ratio of pipe-diameter as alterable parameter, the mathematic model of structure optimization was established.

将加速段、减速段高度及其管径比作为可变参数，建立了结构优化数学模型。

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