Risk Evaluation and Climate Change Adaptation of Civil Engineering Infrastructures and Buildings by Panagiotis Kotronis

Author:Panagiotis Kotronis
Language: eng
Format: epub
ISBN: 9781119671435
Publisher: Wiley
Published: 2019-10-05T00:00:00+00:00

Figure 2.8. Separation from soil according to loading rate

Consequently, differences observed between p—y curves developed for different loading rates can be attributed to the evolution of the gap around the foundation, which, in turn, depends on the loading rate. In addition, when the loading rate becomes very high (in practice, greater than 100k), the reaction curve becomes independent of the rate, inasmuch as the displacement of the pile induces no separation.

Effect of soil anisotropy

The reaction curves modeled by the constitutive law presented in the first part, which is anisotropic, are compared in this section to those modeled by the modified Cam-Clay (MCC) isotropic constitutive law (Roscoe and Burland 1968). The developed constitutive law can be reduced to the MCC by disabling the state variable α that controls the evolution of soil anisotropy as well as destructuration parameters ξ and pb.

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