六杆四面体双曲面冷却塔网壳的构形、静力与稳定性能
朱谢联,董石麟

Configuration, static and stability behavior of hyperboloidal cooling tower lattice shell composed of six-bar tetrahedral units
Xie-lian ZHU,Shi-lin DONG
图 4 冷却塔的加强环
Fig.4 Stiffening rings of cooling tower