Abstract: At present, Large-tonnage prestressed anchorage technique has been widely used to strengthen unstable rock, danger dams and dam structures, but no corresponding design specification can be followed, this paper discusses such main points as design criterion, spatial finite element analysis, testing meth arrangement of prestressed cables, and proposed optimal design method and its computer software for prestressed piers, finally the author presents some cases of Large tonnage prestressed project.

摘要： 大吨位预应力锚固技术已广泛应用于岩体锚固、危坝加固和混凝土坝体加强，但至今尚未颁布相应的设计规范，本丈详细讨论了预应力锚固设计的关键问题，即设计准则、空间有限元分析方法，试验技术验证，预应力锚束布置形式，探讨了预应力闸墩设计的基本思想和实施方法，并举实例说明，介绍了国内外若干预应力锚固工程实例，文末对大吨位预应力锚固技术作了展望。