The structure and construction method of externally prestressed structures differ greatly from structures with bonded or unbonded tendons, therefore generate the difference in prestressing loss.

体外预应力结构的构造形式及施工方法与有粘结或无粘结预应力结构有较大差别，因此，其产生的预应力损失也不同。

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The cable prestressing loss and web members damage experiment of a beam string structure was carried out.

对单榀张弦梁的索力损失和腹杆损伤进行了试验研究。

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