Design and Test of an Exceedingly-long Prestressed Workshop Floor
QIN Shi-hong~1,LONG Xian-neng~2,LI Tang-ning~1,PI Tianxiang~1
DOI:10.11835/j.issn.1674-4764.2005.06.011
Received ,Revised May 28, 2005, Accepted , Available online July 01, 2015
Volume ,2005,Pages 49-54
- Abstract
Based on the project of a prestressed concrete beam-slab structure,this paper introduces the optimum design of a four-spanned exceedingly long prestressed floor. Different schemes,such as the scheme of the prestressed major beam,the scheme of the prestressed secondary beam with the same span and the scheme of the prestressed secondary beam with different spacing,are compared and analyzed in this paper.Meanwhile,various methods of the exceedingly treatment for long prestressed reinforcement are compared.Finally,based on two prestressed beams,the prestress loss,the prestressing value at the ends of the beam and the deflection in the midspan of the beam are detected during the tension and anchorage stage in order to verify the results of the theoretical analysis.