Saddle-shaped cable-net is a new large-span space structure. The temperature is an important factor that affects the mechanics characteristics of the saddle-shaped cable-net, and the impact is more obvious with the greater span. Based on the saddle-shaped cable-net structure, a finite element calculation model has been established, thus the research of mechanics characteristics on saddle-shaped cable-net was carried out. The results of calculation indicate that the change of temperature has a great impact on the mechanics of the structure, and it also affected by the types and expansion coefficients of cables.%马鞍形索网结构为新兴大跨度空间结构,温度是影响预应力空间结构力学性能的关键因素,跨度越大影响越明显.基于某马鞍形索网结构,建立了有限元计算模型,进行了温度作用下的力学性能分析和研究.计算结果表明,受温度作用的影响,索网结构力学性能的变化较明显,且与拉索类型的选取和线膨胀系数有关.
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