N段变截面高层建筑框架-剪力墙结构考虑楼板和地基变形时的整体稳定分析

OVERALL STABILITY ANALYSIS OF TALL BUILDING FRAME-SHEAR WALL STRUCTURES WITH N-STEPPED PARAMETERS AND WITH FLOOR SLAB AND BASE SOIL DEFORMATIONS CONSIDERED

本文为需要考虑楼板变形和基础、地基共同工作的变截面高层建筑框架-剪力墙结构的整体稳定问题提供一个简单的算法。将框-剪结构沿高度方向分段连续化,考虑楼板变形,建立其整体稳定题问的微分方程组。基础置于弹性地基或按弹性地基梁考虑的桩基上。根据上、下部的平衡和协调条件,用常微分方程求解器求解其临界荷载和相应的失稳形态。编制了变截面高层建筑框架-剪力墙结构考虑楼板和地基变形时的整体稳定分析的通用程序——OSATBS,便于工程设计人员直接采用。最后给出了计算示例。

In this paper, firstly using the commonly used piecewise continuum technique for the structures, a new continuous parallel model is taken as the computational model for the overall stability analysis of tall building frame-shear wall structures with N-stepped parameters and with floor slab and base soil deformation considered. The stability differentialequations for the model have been derived.Secondly, using the ODE (Ordinary Differential Equation) Solver, which is a general purpose program developed for solving various ODE problems, including eigen-value problems numerically, the critical loads and buckling modes have been obtained.Finally, a Computer program 'OSATBS' is developed for engineering design, and some calculation examples are given.