Brief Analysis on the Mechanical Behavior Influenced by Opening Locations of the Unbonded Prestressed Concrete Slabs

Abstract:

The unbonded prestressed concrete slabs is usually used in big span high-rise buildings. Due to the existence of stairs, elevators, piping shafts and washroom etc，（hole drilling is usually encountered in the floor of unbonded prestressed concrete structures）, which weakens the rigidity of concrete slab, and it has different influences on the slabs with openings in different locations. Based on the contrast experiments of the unbonded prestressed concrete slab with openings in different locations subjected to uniform load, this thesis investigates and analyzes mechanical behavior of the unbonded prestressed concrete slabs with openings in different locations (central，around edge and corner) subjected to uniform load. Using the yield-line theory to calculate the ultimate bearing capacity of pre-stressed slabs with openings, and comparing from experimental results to theoretical ones, this paper puts forward some conclusions of how different opening locations impact the ultimate bearing capacity of pre-stressed slabs with openings

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 774-778
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.774
• Online since: May 2011
• Authors: Ling Zhi Jin, Hong Mei Zhou, Qiang Fu, Xiao Jie Zhou, Yu Lin Xie
• Keywords: Load-Carrying Capability, Location of Opening, Slab with Opening, Ultimate Bearing Capacity, Unbounded Prestressed Concrete

References

[1] Dongmei Zhao. Mechanical properties of the unbonded prestressed concrete slabs with openings Journal of Construction Technology. 1999,28(12):23-25. (In Chinese)

[2] Xie Yulin. Rearch on opening holes impacting the main factors of unbonded prestressed two-way slabs. Master's paper of Guilin univercity of technology. (In Chinese)

[3] Cui Yanwei. Rearch on post-tensioned unbonded prestressed concrete board with open-hole. Master's paper of Guilin univercity of technology . (In Chinese)

[4] Chen Yuan. The mechanical performance study of reinforced concrete flat slabs with opening. Master's paper of Southeast University.(2004)

[5] S.S.J. Moy. Plastic methods for steel and concrete structures. Beijing, China architecture & building press. (1986)