两铰U型钢-I字钢可缩支架内力分析及应用

ANALYSIS OF TWO-HINGE “U” STEEL-“I”STEEL YIELDABLE SET AND USAGE

两铰 Ｕ 型 钢－ Ｉ 字钢支 架集中梯 形支架与 Ｕ 型钢可 缩支架的 优点，并 采用 先进 的铰 接结构据现 场应用 观测结果 并通过 支架内力 计算，在 非对称载 荷作用 下，与 Ｕ 型钢 支架相 比，该 支架强度可 提高１ 倍 以上，可 缩性能改 善，避免 了支架构 件出现 破坏性变 形图５ ，表３ 。

Having adopted advanced hinge,the advantages of the rigid support “I” steel and yielding “U” steel was concentrated.By means of industrial observation and numerical method,it was provided that the two-hinge “U-I” steel yieldable set can bear high load,improve yieldable property, avoid suffer damage, under unbalanced load, based on the comparison with U yieldable steel set.5figs.,3tabs.,3refs.