对国内现阶段预应力撑杆式钢压杆的计算进行了简单总结.对不同节间数、不同撑杆高度、不同初拉力、不同拉索截面的预应力撑杆式钢压杆进行了理论计算与数值模拟.通过模拟结果与理论计算的对比可得:施加预应力后,钢压杆的稳定承载力有了较大的提高,其稳定承载力提高的程度与预应力钢压杆的节间数、撑杆高度、拉索截面有一定关系,但与拉索初始预拉力的大小无关.模拟结果与理论计算之间存在一定的差值,但两者有着相同的变化趋势.%The theoretical calculation of prestressed pole-type steel column at the present stage of the domestic was summarized briefly.Theoretical calculation and numerical simulation are carried out for prestressed steel column with different internodes, different strut height, different initial tension and different section of cable.The results show that the load carrying capacity of the steel column after applying prestress is more than that of the non-prestressed steel column, and the degree of stability of the bearing capacity is related to the number of internodes of the prestressed steel column, the height of the stay and the cross section of the cable.There is a certain error between the simulation results and the calculation, but the trend of the two is the same.
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