论文部分内容阅读
无粘结预应力和有粘结预应力技术 ,在解决大跨度、大空间、大面积混凝土结构设计上 ,具有重要的作用。本文提出的大跨度、重载、大面积无粘结预应力混凝土屋盖体系和大跨度、超长度有粘结预应力混凝土框架体系 ,在施工中解决了诸多关键技术 :张拉、锚固、布管、穿筋、灌浆等。这些经验 ,有助于推动大跨度预应力技术的发展。现场进行的摩擦系数的测定与试验 ,为修订现行技术规范提供了可参考的数据。
Unbonded prestressed and bonded prestressed technology, in solving large-span, large space, large-area concrete structure design, has an important role. The proposed long-span, heavy-load, large-area unbonded prestressed concrete roof system and large-span, ultra-long bonded prestressed concrete frame system solve many key technologies in construction: tensioning, anchoring, Tube, wear tendons, grouting and so on. These experiences help to promote the development of long-span prestressed technology. The determination and test of the friction coefficient carried out on the site provide reference data for the revision of the existing technical specifications.