Practical Calculation Method of Lateral Displacement for High-rise Structures Considering P-A Effect

摘要

In order to facilitate solving lateral displacement of column cap for various kinds of high-rise structures, and provide reliable basis for engineering application, practical calculation formulas were derived for lateral displacement of column cap, based on the equilibrium differential equation of the beam, energy principle and equivalent substitution method. Dead load was treated with two conditions: considering and without considering. Equal section and variable section were both considered, as the column cap suffered with vertical and horizontal forces. Three example were given with comparison to present literatures and FEM. Calculation results have shown that the proposed method has not only the succinct formulas but also high precision. It can meet the need of practical calculation works.