关键词: 高桥墩, 几何非线性, 能量法, 等效水平力, 等效等直截面

Abstract: Based on the principle of minimum potential and using Rayleigh-Ritz method, the geometric non-linear analysis of higher bridge piers wes solved in this paper. The new concept of equivalent horizontal force proposed by the author may be easily to calculate the second effect, which wes produced due to the vertical forces and resisted by the piers and rubber pad bearings incorporately. The simple formula in this paper are applicable to calculate by hand, understood clearly without computation of successive iteration, higher precision and graspable easily for the disigner. Therefore it has the practical significance.

Key words: higher bridge pier, geometric non-linear, energy method, equivalent horizontal force, equivalent straight bar of constant cross section