Abstract：The dynamic reliability of the normal structures on flat ground differs greatly from that of hillside structures. The tests on the dynamic characteristics of Zhanduikang in the Potala Palace, which is a typical Tibetan structure on the slope, were performed based on environmental vibration. The foundation restrained stiffness-frequency sensitive domain curve was analyzed, and then the test results were used to update the finite element model. Based on the firstexcursion criterion and the Poisson spanning assumption, an improved dynamic reliability solution was proposed. Furthermore, the Zhanduikang was regarded as a series-connected system to obtain its system reliability, and the influence laws of foundation restrained stiffness change on dynamic reliability were obtained. The results show that the dynamic test provide basis for the updating of finite element model; the foundation restrained stiffness has a significant effect on fundamental frequency and there is a sensitive domain. The foundation restrained stiffness should be reasonably estimated when calculating dynamic reliability by the dynamic reliability solution based on the first-excursion criterion.
常鹏 吴楠楠 王钊 杨娜 白凡. 藏式山地结构有限元模型修正及动力可靠度分析#br#[J]. 土木工程学报, 2020, 53(6): 13-20, 41.
Chang Peng Wu Nannan Wang Zhao Yang Na Bai Fan. Finite element model updating and dynamic reliability #br#
analysis of Tibetan structure on the slope. 土木工程学报, 2020, 53(6): 13-20, 41.
