Design and analysis: loading combinations, section steel area calculating, earring capacity computation, section stress checking, deformation and crack width checking and so on.
设计分析：含荷载组合计算、截面配筋设计、承载能力计算、截面应力验算、变形及裂缝宽度验算等。
The relation between deformation and stress was explained with nonlinear elastic increment theory, and the method of checking the cracking rupture was also given.
用非线性弹性增量理论解释了变形和应力的关系并说明验算裂缝的方法。
On this basis, checking to the tubing axial deformation, load and stress calculation method of the former, provide the basis for pipe strings design and a reasonable choice of production parameters.
在此基础上，分析管柱载荷、应力及轴向变形，为井下管柱的合理设计提供依据。
On this basis, checking to the tubing axial deformation, load and stress calculation method of the former, provide the basis for pipe strings design and a reasonable choice of production parameters.
在此基础上，分析管柱载荷、应力及轴向变形，为井下管柱的合理设计提供依据。
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