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基于纯钢框架结构及钢框架—支撑结构的受力特点,提出新的结构形式———预应力巨型支撑—钢框架结构体系。制作缩尺模型,以试验研究该新型体系中拉索预拉力取值准则及结构侧移模式。试验表明:预应力巨型支撑—钢框架结构中,拉索预拉力以“受压最大的拉索在外部荷载作用下剩余拉力接近于零”为确定准则;预应力巨型支撑—钢框架结构侧移模式具有弓形特征。
Based on the mechanical characteristics of pure steel frame structure and steel frame-support structure, a new structural form --- prestressed giant support-steel frame structure system is proposed. The scale model was made to test the pre-tensioning value of the cable and the lateral displacement mode of the structure in the new system. The tests show that the prestressing giant support-steel frame structure, the prestressing force of the cable is determined by the criterion that “the residual tension of the cable subjected to the maximum pressure under external load is close to zero”; the prestressed giant support-steel frame structure Sideshift patterns have arcuate features.