In the installation process of irregular arch ribs,it is easy to occur that the control points cannot be seen through or the prism cannot be kept vertical.Then it is necessary to re-calculate the instal-lation coordinates of new control points.However,the state of spatial inclination,the complicated and heavy calculation burden of coordinate will cause the instruction of the arch rib segment with machining deviation and linear control to be corrected extremely difficult.Aiming at the practical problems,a parameterized coor-dinate algorithm of spatial arch ribbed arch installation control points was proposed by transforming the spa-tial arch ribbed structure into a geometric model considering the arch ribbed the pre-arch degree value ob-tained from finite element calculation.The results of linear measurement after closure show that the method has a high calculation accuracy,and effectively solves the timeliness and accuracy of newly built control point coordinate calculation in the process of arch rib installation.
关键词
空间六边形提篮拱/预拱度/几何模型/参数化算法/安装线形控制
Key words
space hexagonal basket arch/camber/geometric model/Parameterized algorithm/installed lin-ear control
维普
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