体外预应力技术的研究进展

Review of Externally Prestressed Technique

文章介绍了体外预应力技术的发展概况及国内外有关体外预应力的部分重要文献,详细阐述了体外预应力混凝土简支梁受力性能的主要影响因素,列举了各国关于体外索极限应力的公式. 在评价各国公式的基础上,提出了作者的见解.

The paper presents the concept and the development of externally prestressed technique, and introduces some important literatures about externally prestessed technique home abroad. And especially it expatiates on some important factors that influence the behavior that externally prestressed supports concrete beams. And some formulas of ultimate stress of external tendon are given. On the basis of the above formulas, suggestion is given to solve the problem of ultimate stress increment.