根据现有的国内外公式，在理论分析的基础上对既有的多组体外预应力筋极限应力简化计算公式进行验证分析。
According to the present formula, this article mainly analysis the different simplified formula to the ultimate stress of external prestressing tendon on the base of theoretical analysis.
所有既有的地板和墙壁都被拆除，建筑外皮被剥除，还原到现有的外墙。
All the existing floors and walls were removed with the building being stripped back to the existing external walls.
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