Study On Construction Technology Of Unbonded Prestressed Concrete

Pre-stressed structures reinforced concrete as wildly used technologyis a combination of high steel and concrete, which efficiently coverslonger span to meet the special functional requirements.As a trend of modern concrete structure, untended prestressedconcrete is more widely used in buidings for selling. A lot of thedepartment that was constrected by one slab is coming. In this paper, thequestions of the constructing if unbonded prestressed concrete areintroduced and discussed. Discuss crossbeam, compressed crossbeam,hollow slab, steel tube columniation and portal frame constructing. Andcombine a practice work, sum-up such structure's design and constructionexperience.The research of this thesis include: The development process of theprestressed concrete concept have been looked back .And the definitionand work principle of unbonded prestressed structure in modernprestressed structure system have been putted forward andanalysed.According to the example engineering, the construction ofcrossbeam, compressed crossbeam, hollow slab, steel tube columniationand portal frame in unbonded prestressed concrete engineering have beendiscussed.And the technology difficulty in unbonded prestressed concreteengineering construction, for example, solution of detached steel bars andprotect of corrupt anchor cable, have been analysed.