The load combination is complex with consideration of the effect of asymmetry distribution of live load, snow accumulation and horizontal seismic load.
且考虑了屋面活载不均匀效应、雪压堆积效应和水平地震作用的影响，荷载组合复杂。
Reliability index is influenced by the variance of basic parameters, resistance distribution, and ratio of live load to dead load.
可靠指标与极限状态方程中的各基本变量的变异性、抗力的概型分布、以及活荷恒荷效应比有关。
Based on the universal finite element analysis software ANSYS, a spatial model of the bridge is built and the stress distribution under the live load on main sections is analyzed.
利用大型通用软件ANSYS建立结构空间有限元分析模型，分析活载作用下各控制截面的应力分布规律。
Afterwards the influences of uneven distribution of the live load, different ratios of live load and dead load and initial shortage of structure to stability behaviors are studied. Finally;
然后，研究了活载不均匀分布、活载与恒载不同比值和结构不同的初始缺陷对结构稳定性能的影响程度。
The reliability of an existing structure mainly depends on three factors, namely, the resistance degradation, the resistance posterior distribution and the live load.
分析斜拉桥结构动态可靠度时，目前抗力衰减预测的基本模型经验性都很大，对具体结构并不一定适用。
The reliability of an existing structure mainly depends on three factors, namely, the resistance degradation, the resistance posterior distribution and the live load.
分析斜拉桥结构动态可靠度时，目前抗力衰减预测的基本模型经验性都很大，对具体结构并不一定适用。
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