摘要
通过对四种常用的预应力钢丝在高温下,考虑不同的温度应力途径时的强度试验,分析了各种预应力钢丝在20℃～800℃范围内的屈服强度、极限强度,给出了相应的计算公式,同时分析了不同温度应力途径下各种预应力钢丝的强度差异。
The strength of four prestressed steel wires which are commonly used in prestressed structural engineering under elevated temperature is studied. The various mechanic performances of the steel wires such as yielding strength, ultimate stress caused by temperature of prestressed steel wires of every grade ranging from 20℃ to 800℃ are analyzed. The computation equations are listed, and strength of the wires under different temperature-stress paths are compared.
出处
《建筑结构》
CSCD
北大核心
2007年第6期99-101,104,共4页
Building Structure
基金
国家重点基础研究专项经费资助项目(2001CB409603)
国家自然科学基金重大国际合作研究项目"热-力耦合作用下重大建筑火灾安全基础研究"(50320120156)
关键词
预应力钢丝
高温
强度
fire hazards
prestressed steel wires
elevated temperature
strength
prestressed concrete
