推导出薄壁高桥墩自振频率的计算公式，并将该公式计算结果与有限单元法计算值进行了分析与比较。
Equivalent stiffness method proposed by the authors is used to calculate free-vibration of thin high bridge piers, then the result of calculation is analyzed and compared with that of FEA method.
考虑地基弹性变形影响，用能量法对高桥墩进行几何非线性分析。
Using energy method, the geometric non-linear of higher bridge pier is analyzed.
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