大底盤多塔樓結(jié)構(gòu)的整體穩(wěn)定計(jì)算*
包世華 王建東
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包世華 （清華大學(xué)土木系 北京 100084）王建東 （河北省建筑設(shè)計(jì)研究院 石家莊 050011）
[提要] 用沿高度方向分段連續(xù)化的方法，對底部為大底盤、上部為多塔樓的高層建筑結(jié)構(gòu)建立了整體的穩(wěn)定方程，用常微分方程求解器COLSYS求解，為這種復(fù)雜的高層建筑結(jié)構(gòu)的整體穩(wěn)定計(jì)算提供了一種簡化算法。
[關(guān)鍵詞] 高層建筑結(jié)構(gòu) 大底盤 多塔樓 整體穩(wěn)定A piecewise continuous model is taken as the computational model for the overall stability analysis of multi-towerbuilding structures with enlarged base at the bottom. The stability differential equations for the model are derived. Moreover, the criticalloads and the corresponding buckling modes are determined numerically by means of the ODE (Ordinary Differential Equation) Solver, which is a program developed for solving various ODEs, including eigenvalue problems.
Keywords: tall building structure; enlarged base; multi-towerbuilding; overall stability
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