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软黏土上覆砂层的条形基础承载力分析(PDF/HTML)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2017年03期
Page:
171-174
Column:
研究论文
publishdate:
2017-05-31

Article Info:/Info

Title:
Computation of bearing capacity of strip footing on sand overlying soft clay soil
Article ID:
1000-2006(2017)03-0171-04
Author(s):
ZHAO ZhifengPENG Bangyang
College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
Keywords:
sand overlying clay strip footing bearing capacity computation model
Classification number :
TU433
DOI:
10.3969/j.issn.1000-2006.201602005
Document Code:
-
Abstract:
【Objective】 The analysis of the bearing capacity of a strip foundation under the circumstance of sand overlying soft clay can provide a reference to the design of shallow footing where weak subsoil exists. 【Method】A theoretical derivation method is applied on the basis of the spread projection model, and the computation formula of strip footing bearing capacity on sand overlying clay soil is derived according to the stress analysis of the sand element beneath the footing. 【Result】 For the convenience of calculation, the determined parameters in the formula are given. According to the analysis, factors such as footing width, the thickness of the sand layer, the shear strength of sand and clay and the spread angle of the load have an influence on the bearing capacity, and they are considered in the formula. To prove the effectiveness of the formula, the bearing capacities of centrifuge models in the classic articles are calculated by the derived formula. 【Conclusion】The comparison shows that the relative errors between the formula and centrifuge experimental tests are less than 10%, indicating that the formula can be applied in computing the bearing capacity of strip footing on sand overlying soft clay.

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Last Update: 2017-05-20