张拉整体结构的力密度法找形分析  

Form Finding of Tensegrity Structures by Force Density Method

作　　者：陈志华[1] 王小盾[1] 刘锡良[1] 

机构地区：[1]天津大学,天津300072

出　　处：《建筑结构学报》1999年第5期29-35,共7页Journal of Building Structures

摘　　要：本文介绍了适用于带有索元的柔性空间结构找形的力密度法。对力密度法的基本公式修正后，将其用于张拉整体体系，并编制了相应的分析程序。对附加的约束条件，推导了扩展力密度法的基本公式。用本文编制的程序对三棱柱单元体、四棱柱单元体及四面体复合单元进行了算例分析，并对较复杂的四面体复合体的找形结果进行了试验研究。The force density method was selected as the most effective way to form finding of tensegritystructures among the venous finite element methods. In the paper, the force density method wasintroduced and applied to tensegrity systems after an appropriate modification. Then, the basicformula of the nonlinear extended force density method under additional constraining conditions wasderived with the finite element program of force density compiled. Three examples have beenanalyzed by the program and the result of the most complicated one--the tetrahedral-complexhas been verified by a model test.

关 键 词：力密度法 张拉整体结构 找形分析 

分 类 号：TU398.901[建筑科学—结构工程]