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001517

2024-08-26

Spring Constants for Stiffness Using Fictitious Column for "Semi-Rigidly" Supported Columns with Elastic Surface Foundation Considering Shear Stiffness

Using these formulas, you can calculate the spring constants for the stiffnesses using a fictitious column for a "semi-rigid" support and an elastic surface foundation, taking into account the shear stiffness.

C_{u X} = \frac{12 \cdot E I_{Z}}{H^{3} \cdot A_{h e a d} \cdot (4 + k_{z})} + \frac{X}{100} \cdot \frac{36 \cdot E I_{Z}}{A_{h e a d} \cdot H^{3} \cdot (1 + k_{z}) \cdot (4 + k_{z})};

C_{u Y} = \frac{12 \cdot E I_{Y}}{H^{3} \cdot A_{h e a d} \cdot (4 + k_{y})} + \frac{X}{100} \cdot \frac{36 \cdot E I_{Y}}{A_{h e a d} \cdot H^{3} \cdot (1 + k y) \cdot (4 + k_{y})};

C_{u Z} = \frac{E \cdot A}{h \cdot A_{h e a d}}

C_{φ Y} = 2 \cdot \frac{E \cdot I_{Z}}{\cdot A_{h e a d} \cdot h \cdot (1 + k_{z})} + \frac{X}{100} \cdot \frac{E I_{Z}}{A_{h e a d} \cdot H (1 + k_{z})}; C_{φ X} = \frac{2 \cdot E \cdot I_{Y}}{A_{h e a d} \cdot h \cdot (1 + k_{y})} + \frac{X}{100} \cdot \frac{E I_{Y}}{A_{h e a d} \cdot H \cdot (1 + k_{y})}

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