An Analysis of the Relationship between Seismic Action and Pile Spacing of Anti-Slide Piles Based on Soil Arch Effect
详细信息
- 责任者：Jiao Yun (Geologic Hazards Prevention Institute ; Gansu Academy of Sciences ; Lanzhou 730000 ; China) ; Bai Qianqian
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2013
- 卷期：40(5)
- 关键词：抗滑桩 ; slide-resistant piles ; 地震响应 ; seismic response
- 页码：p.58-63
- 图表：6 illus., 1 table, 17 refs.
- 分类号：1702
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
Based on the soil arch effect among anti-slide piles,the mechanics analysis model of soil arch effect for seismic action is established.On the basis of the Mononobe-Okabe theory and assuming that the soil arch effect is equivalent to retaining wall effect,the calculation method of the horizontal seismic force in the soil arch surface is presented under the seismic fortification intensity.According to the static equilibrium condition and strength condition of piles soil in the limit equilibrium state,the landslide thrust and seismic force is considered and the theoretical calculation formula of spacing between piles are otabined.Under the same conditions,engineering examples and series of trial show that spacing between piles reduce from 4% to 23% when the seismic action is considered.The calculation formula of direct reduction factor and reduction coefficient for spacing between piles in different seismic fortification levels are attained.