轴心受压格构式缀板与缀条柱选型对比研究

Comparative Study on Selection of Batten plate and Lace Bar Lattice Columns under Axial Compression

通过大量算例对比分析了轴心受压缀板柱与缀条柱满足实轴、虚轴稳定条件下的格构柱最小用钢量,并得出两种构件的稳定经济性适用条件。推导出缀板柱与缀条柱在轴心受压下格构柱最小用钢量的计算公式。以分肢截面,分肢间距,实轴与虚轴计算长度,缀板尺寸与间距,轴心压力,缀条截面与布置角度为变化参数,得到两种格构柱的最小用钢量。上述研究结论可为工程设计提供参考。

The minimum amount of the steel between the batten plate and lace bar lattice columns under axial compres- sion in the stability conditions of both strong and weak axis is compared and analyzed through a large number of exam- ples, and the stable economic conditions for the application of two components are obtained. The formulas in the mini- mum amount of two kinds of steel columns under axial compression are derived. The section and spacing of double limbs, the effective lengths of both strong and weak axis, the size and spacing of batten plate, axial pressure, as well as the sec- tion and assigned angle of lace bar are taken as variable parameters so as to obtain the minimum steel consumption of two lattice columns. All these as mentioned above could provide some references for the engineering design of lattice columns.