## Journal of Applied Mathematics

• J. Appl. Math.
• Volume 2013, Special Issue (2013), Article ID 673057, 12 pages.

### Elastoplastical Analysis of the Interface between Clay and Concrete Incorporating the Effect of the Normal Stress History

#### Abstract

The behaviour of the soil-structure interface is crucial to the design of a pile foundation. Radial unloading occurs during the process of hole boring and concrete curing, which will affect the load transfer rule of the pile-soil interface. Through large shear tests on the interface between clay and concrete, it can be concluded that the normal stress history significantly influences the shear behaviour of the interface. The numerical simulation of the bored shaft-soil interaction problem requires proper modelling of the interface. By taking the energy accumulated on the interface as a hardening parameter and viewing the shearing process of the interface as the process of the energy dissipated to do work, considering the influence of the normal stress history on the shearing rigidity, a mechanical model of the interface between clay and concrete is proposed. The methods to define the model parameters are also introduced. The model is based on a legible mathematical theory, and all its parameters have definite physical meaning. The model was validated using data from a direct shear test; the validation results indicated that the model can reproduce and predict the mechanical behaviour of the interface between clay and concrete under an arbitrary stress history.

#### Article information

Source
J. Appl. Math., Volume 2013, Special Issue (2013), Article ID 673057, 12 pages.

Dates
First available in Project Euclid: 14 March 2014

Permanent link to this document
https://projecteuclid.org/euclid.jam/1394807572

Digital Object Identifier
doi:10.1155/2013/673057

#### Citation

Cheng, Zhao; Chunfeng, Zhao; Hui, Gong. Elastoplastical Analysis of the Interface between Clay and Concrete Incorporating the Effect of the Normal Stress History. J. Appl. Math. 2013, Special Issue (2013), Article ID 673057, 12 pages. doi:10.1155/2013/673057. https://projecteuclid.org/euclid.jam/1394807572

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