Based on a real project, the new technology of opening-reconstruction on the unbonded prestressed concrete slab has been presented in this paper, which includes the concept design, construction procedure, and application of post-assembly anchorage zm15 結(jié)合實(shí)際工程,介紹了無粘結(jié)預(yù)應(yīng)力樓蓋開洞改造工程的概念設(shè)計(jì)、施工程序、后裝式組合錨具的應(yīng)用等技術(shù)要點(diǎn)。