摘要
建筑火灾的现场调查是对灾后预应力混凝土结构损伤程度评估和处理的第一步工作,在此基础上,根据过火结构的特征可判定火灾温度及损伤等级,二、三级损伤需进行加固处理。处理时建议采用加大截面法和预应力加固法。在可能的情况下,重新张拉预应力钢筋也是一种快捷便利的方法。
Site investiga tion i s the first step of evaluation and treatment of prestressed concrete's structur al damage after fire.Based on that,fire temperature and damage degree can be det ermined by the characteristics of fire spreading.It is required to make reinforc ement for the2nd and3rd degree damage.It is suggested to apply enlarged cross-section and prestressed reinforcement for the treatment.If it is possible,stret ching prestressed bar all over again is also a fast and convenient method.
出处
《建筑技术》
北大核心
2003年第6期423-425,共3页
Architecture Technology
关键词
火灾
预应力混凝土
损伤
加固
fire
prestressed concrete
damage
reinforcement
