Aseismic performance of large span latticed domes with separated substructures
YANG Dabin1, YUN Chaoguang1, WU Jinzhi2, ZHANG Yigang2
1. School of Civil Engineering, Shandong Architecture University, Jinan 250101, China,
2. School of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
Damage of connecting place between upper roofs and bottom substructures are one of the main earthquake damages, as is shown in many earthquakes. To reduce the probability of this kind of damage, a separated substructure design method was proposed. The substructures were divided into two parts: one part sustaining horizontal and part vertical loads of the roof and the other part only sustaining the rest of vertical loads of the roof. The former substructure was connected with the roof using steel structures with larger elastic deformation. The latter substructure was connected with the roof using horizontal sliding bearings, so horizontal shear force was released to reduce the damage probability of bearings. FE models for a typical single-layer latticed dome and its bottom substructures were built based on this design idea. Their dynamic performances were computed under smaller and stronger earthquakes based on contemporary design codes, the results showed that the dome and the part of its bottom substructures sustaining horizontal and part vertical loads of the roof can be computed independently, and the dome’s temperature stress can be released effectively; the aseismic performances of the structure are good under smaller and stronger earthquakes; it costs less steel to be used.
杨大彬1，云超光1，吴金志2，张毅刚2. 基于下部支承分离式设计的大跨度网壳结构抗震性能研究[J]. 振动与冲击, 2018, 37(3): 237-242.
YANG Dabin1, YUN Chaoguang1, WU Jinzhi2, ZHANG Yigang2. Aseismic performance of large span latticed domes with separated substructures. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(3): 237-242.
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