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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。
This paper provides a simple algorithm for the global stability of the variable cross-section high-rise building frame-shear wall structure which needs to consider the floor deformation and the foundation and the foundation work together. The frame-shear structure is segmented continuously along the height direction. Consider the deformation of the slab and establish the differential equations of the overall stability question. Foundations are placed on elastic foundations or pile foundations considered on elastic foundation beams. Based on the balance and coordination conditions of the upper and lower parts, an ordinary differential equation solver is used to solve its critical load and the corresponding instabilities. The OSATBS, a general program for the overall stability analysis of the high-rise building frame-shear wall structure with variable cross-section considering the deformation of the floor slabs and foundations, has been prepared for direct use by engineering designers. Finally, a calculation example is given.