Analysis of Ultimate Bearing Capacity of Culvert Foundation with Crust Layer
[1]Ma Qiang,Zhu Jian,Xing Wenwen,et al.Analysis of Ultimate Bearing Capacity of Culvert Foundation with Crust Layer[J].Journal of Zhengzhou University (Engineering Science),2016,37(01):70-74.[doi:10.3969/j.issn.1671-6833.201504039]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
37
Number of periods:
2016 01
Page number:
70-74
Column:
Public date:
2016-02-28
- Title:
- Analysis of Ultimate Bearing Capacity of Culvert Foundation with Crust Layer
- CLC:
- -
- Abstract:
- According to the characteristics of the load of the lateral embankment filling on the culvert, based on the limit equilibrium theory and the ultimate bearing capacity formula of Meyehof and Hanna, the formula for calculating ultimate bearing capacity of the culvert foundation with crust layer was deduced. A series of comparisons were carried out among the calculation results obtained from Hansen’s weighted average method, the stress diffusion angle method, the improved formula proposed in this paper and the finite element method. And the influences of the height of embankment filling, the thickness of crust layer, the ratio of cohesive and the internal friction angle of the crust layer to the subjacent soil layer on the ultimate bearing capacity were in-vestigated, in addition, a comparison of the results was made from engineering practical examples and the cal-culation results from the four theoretical calculation methods. The results show that with the increase of height of embankment filling and the thickness of crust layer, the results of the foundation bearing capacity calculated by the proposed improved formula method and finite element method are the closest. The influence of the variations of co-hesive ratio and internal friction angle ratio on the calculated results of the proposed formula method is more con-sistent with that of the finite element method. The results of the proposed formula method are more approximate to the engineering practical examples than Hansen’s weighted method and the stress diffusion angle method.
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