缓粘结预应力技术在综合体建筑大跨度梁中的应用

Application of slow bond prestress technology in long-span beam of complex building

缓粘结预应力技术是一种区别于普通预应力和无粘结预应力的新型技术,它具备后张法预应力筋中有粘结和无粘结的共同优点,且又克服了二者的缺点。文章通过介绍广州南沙国际邮轮母港综合体项目中大跨度梁缓粘结预应力的应用,阐述了缓粘结预应力技术施工工艺及特点,并对应用效果进行了详细的分析,期望能为后续类似综合体建筑大跨度梁采用缓粘结预应力技术施工提供参考。

The technology of slow bond prestress is a new technology which is different from ordinary prestress and unbonded prestress.It has the common advantages of bonded and unbonded in post tensioned prestressed tendons,and overcomes their shortcomings.This paper introduces the application of the slow bond prestress technology in the large span beam of Guangzhou Nansha international cruise home port complex project,expounds the construction technology and characteristics of the slow bond prestress technology,and makes a detailed analysis of the application effect,which is expected to provide reference for the construction of slow bond prestress technology in the large span beams of similar complex buildings in the future.