﻿ Calculation of Initial modulus of rigidity by 『Guidelines for Design of Wind Turbine Support Structures and Foundation December 2010』

# Calculation of Initial modulus of rigidity by 『Guidelines for Design of Wind Turbine Support Structures and Foundation December 2010』

 1 N-value：N Input integer less or equal 50. 2 Depth：H(m) - 3 Coefficient：E Alluvium Diluvium Geological time division 4 Coefficient：F Clay Fine sand Medium sand Coarse sand Sand gravel Gravel Geological soil division 5 Unit weight of soil：γt(N/m^3) 1(tf)=9806.65(N) 6 Gravitational acceleration：g(m/s^2) - 7 Graph x：N-value,y：G0(MN/m^2) x：H(m),y：G0(MN/m^2) x：γt(N/m^3),y：G0(MN/m^2) - 8 Plot Input Data YesNo - 9 Number of gridlines of Graph x-axis, y-axis -
:Export Graph Image.

## Keyword

Initial modulus of rigidity,Unit weight of soil,Gravitational acceleration,Shear wave velocity of Surface Soil,N-value,Depth,Alluvium,Diluvium,Clay,Fine sand,Medium sand,Coarse sand,Sand gravel,Gravel,geological time division,geological soil division

## Reference

[1]：Edited by Takeshi ISHIHARA：『Guidelines for Design of Wind Turbine Support Structures and Foundation December 2010』、Task Committee on Dynamic Analysis and Structural Design of Wind Turbine,Committee of Structural Engineering,Japan Society of Civil Engineers、pp.163-171

## Remarks

・Initial modulus of rigidity：G0(N/m^3)
・Unit weight of soil：γt(N/m^3)
・Gravitational acceleration：g(m/s^2)
・Shear wave velocity of Surface Soil ：Vs(m/s)
・N-value：N
・Depth：H(m)