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Materials and Structures

, Volume 30, Issue 5, pp 306–312 | Cite as

Introduction to a new series of thin-wall prestressed concrete structures developed in China

  • Ding Dajun
  • Cheng Yongcai
  • Xiao Guorui
Scientific Reports

Abstract

This paper presents a new series of thin-walled pre-stressed concrete roof and floor slabs. For roof structures, an innovative thin-walled slab with a larger span, called the wild-goose-shaped slab, has been developed and used in China since 1979. Its use has spread into 5 provinces, especially over the past 5 years. A roof constructed with this slab is more economical than a traditional concrete structure; the speed of hoisting will greatly accelerate construction as one piece of this slab can cover a large area. Use of the wild-goose-shaped slab as roofing and the thin-walled single-T slab as flooring will allow the construction of multistory buildings. Many two-story buildings have been completed using this combination. The maximum span of the wild-goose-shaped roof slab attains 36 m and that of the single-T floor slab 30 m. The new roof slab can be used in civil structures or industrial plants with or without the use of overhead cranes. As of March 1995, the gross architectural area completed with these slabs was more than 400,000 m2, within 144 engineering projects. The design, construction and testing of these new roof slabs are briefly described in this paper.

Keywords

Stress Coefficient Floor Slab Roof Structure Overhead Crane Multistory Building 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

Cet article présente une nouvelle série de dalles à paroi mince en béton précontraint pour la construction de planchers et de toitures. Pour les structures de toiture, une dalle innovatrice ayant une large portée, appelée «dalle en forme d'aile d'oie sauvage», a été élaborée en Chine en 1979; jusqu'à présent, son utilisation s'est étendue à cinq provinces, surtout au cours des cinq dernières années. Une toiture construite avec ces dalles est plus économique qu'une structure traditionnelle en béton. Elle se monte très rapidement, ce qui accélère la construction, notablement étant donné qu'une seule dalle peut couvrir une large superficie. Avec ces dalles pour la toiture (portée maximale 36 m) et des dalles minces en forme de T-simple pour les planchers (portée 30 m), on peut construire des immeubles à plusieurs étages. De nombreux immeubles à deux étages ont déjà été réalisés. La nouvelle dalle de toiture peut être montée avec ou sans grue. En mars 1995, la superficie brute réalisée avec ces dalles dépassait 400 000 m2, pour 144 projets de construction. La conception, les applications et les essais de ces dalles sont brièvement décrits dans cet article.

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References

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Copyright information

© RILEM 1997

Authors and Affiliations

  • Ding Dajun
    • 1
  • Cheng Yongcai
    • 2
  • Xiao Guorui
    • 2
  1. 1.Nanjing Institute of Technology (NIT)China
  2. 2.Research Institute of Chongcing Yanxing New Thin-wall Structures (RICYNTS)China

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