预应力混凝土梁使用阶段应力分析的精细算法研究

Study on the fine algorithm of prestressed concrete beam in using phase

部分预应力混凝土梁正常使用阶段受力钢筋的实际应力值是结构安全性分析所依据的主要参数之一。本文首先对梁开裂后到破坏阶段间的受力状态进行了精细划分,进而给出各应力状态下受力钢筋应力值的计算方法。本文还以某工程应力监测结果与计算结果进行了比较,结果表明该方法具有较高的精确性。

The actual stress value of normal used partial prestressed concrete beams is one of the key data to analyse the structural safety. Firstly,this article had exquisite distinguish between the beam after cracking and the failure stage,and provided the calculation method of reinforced stress value about these stages. This article also compared some engineering monitoring results with the calculation results. The results showed that the method had good accuracy.