Primary frame made of steel columns and beams.
主钢构由钢柱和钢梁组成。
For a truss with more than one redundant bar, more than one release will be required to obtain the primary frame .
对于有一个以上多余杆的桁架要得到基本体系,就要放松一个以上的约束。
Considering the restraining moment of the secondary beam, the paper deduces formulas for calculating torsional moment of edge beam of frame. Primary factors of affecting torsional moment are analyzed.
考虑次梁的约束作用,推导了框架边梁的扭矩计算公式,分析了影响扭矩大小的主要因素。
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