抗滑桩桩间土土拱效应有限元分析研究

Analysis of arching effect of soil among anti-slide piles by finite element method

采用二维有限元技术分析矩形抗滑桩桩间土土拱效应问题,得知在一定的桩间距下桩土效应较为明显,并通过案例对桩间距和桩间土粘聚力对桩土效应的影响作了分析,提出土拱效应的存在条件,土的性质对土拱效应的影响,得出工程实际中合理的桩间距。

This paper conducts an effective analysis on the arching effect of soil between anti- slide piles, which are arranged in rectangular patterns, by two- dimensional finite dement technique. This research indicated that the pile - soll effect seemed to be obvious when the piles were arranged at certain spacing. The effect of spacing between piles and cohesion of soil on the pile - soil effect was ana- lyzed by ease study. The occurring condition for arching effect was obtained; the effect of property of soil on arching effect was figured out; and the reasonable spacing between piles was obtained for applieation in projects.