因此本文的内容主要是在总结一些成熟的研究经验的基础上，对有开洞墙体的框支梁在不同的结构条件下其内力变化的规律进行研究。

So the research in this paper is about the internal force variation rule of the frame-supported beam of wall body, which based on some mature investigative experience at difference models.

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在调研、分析和试验的基础上，给出了预应力混凝土结构的开洞与粘钢加固方法。

The authors present the methods of reinforcing the openings and adhering the steel plates to prestressed concrete structures on the bases of investigation, analysis and experiment.

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锁于开洞器的刀片上，确保每次开洞深度一致。

Lock in the blade of hole cutter, to make sure that per depth is consistent.

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