预应力混凝土结构抗火设计构造措施分析

预应力混凝土结构在火灾下的抗火性能可以通过理论计算得到保证，但是如果预应力混凝土结构的构造措施不合理，也将大大降低结构的抗火性能，甚至引起预应力失效。通过非线性有限元计算讨论了保护层厚度和防火涂料对结构抗火性能的作用，并对规范要求的保护层厚度进行了分析，最后对锚固区的耐火设计提出了建议。

Fire-resistant design of constructional countermeasures for prestressed concrete structures

The structural behavior of prestressed concrete against fire can be achieved through calculation process. But the structural capability against fire will be weaken if the appropriate constructional detail measurement was not taken, especially will lead to the loss of effective prestress. How does The action of protective layer and fireproof paint contribute to the structural behavior of prestressed concrete subjected to fire was researched by calculation with nonlinear finite element method. The rational thickness of protective layer was analyzed, and the suggestion for the design of anchorage zone was proposed.