论文部分内容阅读
在国际上有许多关于三阶段预应力管环向应力的计算方法。在计算理论方面,归纳起来可以分为三类:一是应变平衡理论,二是混凝土的抗裂度理论,三是弯矩平衡理论。应当指出,各国的计算方法都有各自的特点和科学的部分。我们吸收了科学先进的部分,结合过去研究、实践的经验和成果,在综合分析的基础上推导出一个概念清楚、结果比较准确、计算简单的公式。设计者每算一步都能做到心中有数。一、计算理论与公式的推导预应力压力水管在工作状态下,由四种
There are many international methods for calculating the hoop stress of three-phase prestressed pipes. In terms of computational theory, they can be divided into three categories: the first one is the theory of strain balance, the second is the theory of crack resistance of concrete, and the third is the theory of moment balance. It should be pointed out that the calculation methods of each country have their own characteristics and scientific parts. We have absorbed scientifically advanced parts, combined with past research, practical experience and achievements, and based on comprehensive analysis have derived a formula with clear concepts, accurate results, and simple calculations. Designers can be aware of every step. First, the calculation of the theory and formula of the prestressed pressure water pipe in the working state, from four