中文摘要：

预应力混凝土结构耐久性损伤行为极其复杂，开展大量试验研究揭示其中复杂现象和规律十分必要．文章总结介绍了有关预应力混凝土结构耐久性研究的部分试验技术，包括短试件锚固预应力损失控制技术、腐蚀钢绞线拉伸试验的夹持与全程变形量测技术、长期疲劳加载技术、长期疲劳损伤声发射监测技术等，指出研究预应力混凝土结构耐久性的理论价值和工程意义．

英文摘要：

As the durability problems of prestressed concrete structures are becoming increasingly prominent and the damage behavior is very complicated, it is necessary to investigate this complicated phe-nomenon and laws by vast experimental studies. Some of the experimental techniques for durability study of prestressed concrete structures developed or adopted by author are summarized in this paper, which in- clude the technique for reducing prestress loss in anchoring of short specimens, the technique for gripping the steel strand and measuring the global deformation in tensile test of corroded steel strand, the technique for long-term fatigue loading, and the technique for monitoring long-term fatigue damage with acoustic e-mission technology. The theoretical value and engineering significance in the study of prestressed PC struc-ture durability are also pointed out.