变刚度和带有收进的高层建筑弯扭耦联简化分析  

A Simplified Analysis of Combination of Bending and Torsion for Space System with Variable Rigidity and Setbacks in High-rise Buildings

作　　者：周坚[1] 

机构地区：[1]北京建筑工程学院土木工程一系

出　　处：《北京建筑工程学院学报》1992年第1期18-28,共11页Journal of Beijing Institute of Civil Engineering and Architecture

摘　　要：本文在[1]的基础上,利用广义杆件有限元(在各等刚度段之间)和解析法(在等刚度段内)联合应用来计算变刚度或带有阶梯状不对称收进的由核心筒,剪力墙和平面框架组成的复杂平面布置的三维空间协同工作体系的弯扭耦联问题。推导了单元刚度矩阵、等效结点荷载,并给出在等刚度段内三种典型荷载下的计算公式。算例表明,本法所用单元极少,计算工作量小,速度快,用微机即可解决复杂问题,且具有较好的计算精度,可供初步设计之用。In this paper based on reference [1] a combination usage of generalized finite element method (used between segments of uniform rigidity) and analytic method (used within a segment of uniform rigidity) is employed to calculate the combination of Bending and trosion for 3-dimensional space cooperating system composed of core-walls, shear-walls and plane-frames in high-rise buildings, in which the plan arrangement of braces is arbitrary and bending and torsion are coupled. The element rigidity matrix and the equivalent node loads are derived, and the formulas for calculating internal forces and displacements under three typical loads are given. A numerical example indicates that the generalized finite element method has many advantages such as less number of elements, less calculating time and better accuracy.

关 键 词：变刚度 收进 高层建筑 弯扭耦联 

分 类 号：TU973.2[建筑科学—结构工程]