Seismic Response Analysis of Large-Scale Site with Circular Diaphragm Wall

Abstract:

The seismic response analysis of project soil site is important to obtain the ground motion parameters for seismic design of upper structures. First, a simplified solving method is introduced, in which, the horizontal seismic loadings are expanded into Fourier series in the circumferential direction, using the orthogonality between the normal and tangential direction on the circumference, the three-dimensional problem is reduced to a series of two-dimensional problems. Then, the simplified method is used for seismic response analysis of a practical large-scale soil site with large diameter circular diaphragm wall. The influence of wall to the site is obtained through two field conditions, which are wall field and free field (without wall). Compare with the results of the site without wall, the peak acceleration of the pit bottom is increased owing to the confinement effect of wall, and the influence to ground surface far from the wall is very little.

• Periodical: Applied Mechanics and Materials (Volume 607)
• Pages: 735-738
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.607.735
• Online since: July 2014
• Authors: Ru Lin Zhang*, Wen Dong Yang, Feng Sun
• Keywords: Circular Diaphragm Wall Site, Free Field, Influence, Seismic Response

References

[1] ZHOU Jian, LUO Xiaobo, Structural computation of circular retaining structure using method of equivalent retaining of arch effect, Rock and Soil Mechanics. 24(2003) 169-172.

[2] XUE Songtao, ZHANG Maoyu, XIE Liyu, et al, The dynamic responses of the slurry wall subjected to earthquake waves, Sichuan Building Science. 31(2005) 134-136.

[3] ZHANG Rulin, LOU Menglin, ZHAO Xin, A simplified method for seismic response analysis of site with circular diaphragram wall, Chinese Journal of Computational Mechanics. 28(2011) 898-903.