Research on the Influence of the P-δ Effect to Ultimate Bearing Capacity of Single Layer Latticed Shell Structures

Abstract:

The ultimate bearing capacity of the single-layer latticed shell structure, calculated without considering the single-member instability(P-δ effect), was not consistent to the actual value of ultimate bearing capacity in practice. It was studied in detail that the ultimate bearing capacity of the single-layer latticed shell structure considering the member instability by proposing a method of multi-element simulation. The value of the ultimate bearing capacity decreased by 15.6% after considering the member instability taking a single-layer latticed shell structure with a 40m span as example. The analysis results show that the value of ultimate bearing capacity is significantly affected for the single-layer latticed shell structure with a small span and high rise-span ratio

• Periodical: Applied Mechanics and Materials (Volumes 193-194)
• Pages: 872-875
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.193-194.872
• Online since: August 2012
• Authors: Wen Feng Du, Zhi Yong Zhou
• Keywords: Multi-Element Simulation Technique, Single-Layer Latticed Shell Structures, Single-Member Instability, Ultimate Bearing Capacity

References

[1] Du Wenfeng, Zhu liming, Zhang hui. Study on static stability and the limited load carrying capacity of vierendeel latticed shells[J]. Journal of Zhengzhou University: Engineering Science, 2008, 29(3): 99-102.

[2] Wang Yijun, Wu hui. Optimized design method of space grid structures based on the ultimate bearing capacity [J]. Spatial Structures, 2010, 16(3): 34-40.

[3] Guan Fulin, Gao boqing, Li Li. Stability analysis of single-layer latticed shell[J]. Engineering Mechanics, 1996, 13(3): 93-104.

[4] Yang Dabin, Zhang Yigang, Wu Jinzhi. Member sensitivity analysis of critical loads of elastic-plastic stability for K6 single layer latticed domes[J]. Spatial Structures, 2010, 16(2): 46-49.