The effects of soil-structure interaction in the seismic design of wind turbine foundations by investigating the impact of cement on soil: A case study of Firuz-Bahram soil
الموضوعات :
Masoud ZabihiSamani
1
,
Arwin Farhoud
2
,
seyed mostafa daryabari
3
,
Zahra Esmaeili
4
1 - Department of Civil Engineering, Pa.C., Islamic Azad University, Tehran, Iran
2 - Civil Engineering Department, K.N. Toosi University of Technology
3 - Department of Civil Engineering, Pa.C., Islamic Azad University, Tehran, Iran
4 - Department of Civil Engineering, Pa.C., Islamic Azad University, Tehran, Iran
الکلمات المفتاحية: Wind turbine, seismic analysis, soil-structure interaction, soil stabilization with cement, natural frequency,
ملخص المقالة :
In this paper, by presenting an applied model for simulating wind turbines with mat foundation and soil in an integrated manner, the effects of soil-structure interaction on the seismic behavior of wind turbines and the effect of soil stabilized with different percentages of cement have been studied. For this purpose, a new method for three-dimensional modelling of the rectangular cube foundation has been formulated and presented, assuming its rigid behavior. After importing the suggested model into the ABAQUS software, its adequacy and ability to reduce the time computation without decreasing the accuracy of the responses will be demonstrated. In this study, the effects of soil-structure interaction on the seismic response of 65-kW and 1-MW horizontal-axis wind turbine engines with conical steel towers have been investigated. The two proposed turbines with a mat foundation and frequency-based design have been analyzed. Likewise, the soil is first simulated as a spring to verify the accuracy of the output results. Then, the soil is modelled with the Mohr-Coulomb behavioral model in ABAQUS software, and the obtained results will be discussed and analyzed. It is worth bearing in mind that for verification, only the frequency outputs of the software were compared with the basic paper, and then the mesh dimensions and element boundary distances were examined for the study and software approval.
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