用高阶有限单元法分析高层建筑筒体结构

High order finite element method for analysis of tube structure of high building

横向水平荷载作用下高层建筑筒体结构的内力分析是建筑设计中确定柱子截面的关键。本文提出了一种14节点56自由度的高效高阶平面应力单元列式,并用FORTRAN语言编制了一个相应的结构分析程序,分析了高层建筑墙体和筒体结构在横向水平荷载作用下的内力,获得了满意的高精度结果,表明本文提出的高效高阶单元列式正确,程序可靠,可十分方便地应用于高层建筑筒体结构的高精度工程分析问题。

Analysis of internal forces of tube structure of tall buildings is a key for building engineering design in determining section area of the column.A plane stress element formulation for a higher order,high performance elenent of 14 node,56 DOF is presented in this work.And a structural analysis program of membrane structure has been completed in FORTRAN on the formulation.The internal force of the building under lateral loading has been calculated by the program and a more accurate result obtained for tall building.This indicate that the formulation for the higher order,high performance element correct and the program reliable,and very convenient for application to engineering analysis problem of high accuracy of membrane structure such as tube structure of tall building.