拱圈的自然受力状态是外表面主要承受压力,内表面主要承受拉力。但是,在架设拱圈的吊装施工中,拱圈的受力状态与其自然受力状态恰恰相反。为了兼顾两种不同的受力状态,达到节省材料,合理布筋,保证构件在吊装过程中完好的目的,有必要研究拱圈最佳吊点的选择问题。 Arch ring natural stress state is the main surface of the outer pressure, the inner surface of the main bear tension. However, in the erection of the erection of the erected arch ring, the stress state of the arch ring is the opposite of the natural stress state. In order to take into account the two different stress states, to achieve the purpose of saving material, reasonable cloth reinforcement, to ensure the components in the hoisting process intact, it is necessary to study the selection of the optimal suspension point of the arch ring.