# [1]吕伟华,缪林昌.刚性桩复合地基桩土应力比计算方法[J].东南大学学报(自然科学版),2013,43(3):624-628.[doi:10.3969/j.issn.1001-0505.2013.03.032] 　Lü Weihua,Miao Linchang.Calculation method of pile-soil stress ratio of rigid pile composite foundation[J].Journal of Southeast University (Natural Science Edition),2013,43(3):624-628.[doi:10.3969/j.issn.1001-0505.2013.03.032] 点击复制 刚性桩复合地基桩土应力比计算方法() 分享到： var jiathis_config = { data_track_clickback: true };

43

2013年第3期

624-628

2013-05-20

## 文章信息/Info

Title:
Calculation method of pile-soil stress ratio of rigid pile composite foundation

Author(s):
Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China

Keywords:

TU470
DOI:
10.3969/j.issn.1001-0505.2013.03.032

Abstract:
In order to predict embankment settlement more accurately and simply, the pile-soil stress ratio of rigid pile composite foundation should be adequately evaluated. In the load effect analysis, a vertical shearing plane due to relative displacement at embankment fill base is adopted. Then a simplified theoretical calculation model is deduced, in which the behaviour of pile upward and downward puncture deformation is considered, and the distribution of pile lateral friction above and under the neutral point is assumed to be linearly dependent on stress state. Afterwards a calculation formula of the pile-soil stress ratio of rigid pile composite foundation is proposed with pre-determination of equal settlement plane height in fill and neural point position within pile length by iterative computation. The presented method is validated by comparing analytical solutions with the observed results from a newly constructed highway project and a widening highway project. Results show that the proposed method obtains more accurate results of pile-soil stress ratio when the fill height is more than twice the pile net spacing.

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