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为了研究下部支承刚度对索拱结构力学性能的影响,建立了跨度为60m,矢跨比分别为0.2,0.3,0.4的纯拱结构和索拱结构模型,采用支座刚度对下部支承的刚度进行等效处理。研究了五种不同支座水平刚度下索拱结构的强度、刚度和稳定性。结果表明,下部支承刚度对纯拱结构和索拱结构的强度和静力稳定性影响较小,但对其刚度有一定影响;该索拱结构在不同刚度的下部支承情况下力学性能良好。
In order to study the influence of the lower support stiffness on the mechanical properties of the cable structure, a pure arch structure and a cable arch structure model with a span of 60m and a sag-span ratio of 0.2, 0.3 and 0.4 respectively are established. The stiffness of the lower support Equivalent treatment. The strength, stiffness and stability of the arch structure under the different horizontal stiffness of five different supports are studied. The results show that the stiffness of the lower support has little effect on the strength and static stability of the pure arch structure and the arch structure, but has a certain influence on the stiffness of the arch structure. The arch structure has good mechanical properties under the lower support with different stiffness.